CN103499798A - Device and method for calibrating non-contact type electrostatic voltmeter - Google Patents
Device and method for calibrating non-contact type electrostatic voltmeter Download PDFInfo
- Publication number
- CN103499798A CN103499798A CN201310303386.9A CN201310303386A CN103499798A CN 103499798 A CN103499798 A CN 103499798A CN 201310303386 A CN201310303386 A CN 201310303386A CN 103499798 A CN103499798 A CN 103499798A
- Authority
- CN
- China
- Prior art keywords
- electrostatic voltmeter
- contact electrostatic
- calibrated
- battery lead
- metal battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention provides a device and method for calibrating a non-contact type electrostatic voltmeter. The method includes the steps that a direct-current high-voltage power supply and metal plate electrodes are utilized to acquire a standard static filed at local space near the centers of the electrodes, the voltage of the non-contact type electrostatic voltmeter can be traced to the direct-current voltage standard, and an experimental method that the edge effect is increased is adopted to test the edge effect of the metal plate electrodes. The risks that people get an electric shock are reduced through a glass flat plate support which bears the metal plate electrodes and through a protective resistor, and a perpendicular moving mechanism can adjust the test distance of a calibrated meter. A detachable vernier caliper is adopted, and therefore tracing is convenient to conduct.
Description
Technical field
The present invention relates to calibrating installation and the calibration steps of a kind of Non-contact Electrostatic Voltmeter and static electric field table, belong to the instrument field of electromechanical integration.
Background technology
Measure and static is widely used electrostatic voltmeter in studying at electrostatic defending, contact and contactless two types are arranged.Wherein Non-contact Electrostatic Voltmeter is commonly use a kind of.It utilizes electric field induction principle or other principle in the situation that do not contact with measured surface, measures surperficial voltage and Electric Field Numerical.This voltage be take infinite distance or be greatly reference potential.Measurement result is shown as electric field [volts/meter], is called static electric field table (Static Field Meter); Measurement result is shown as voltage [volt], is called Non-contact Electrostatic Voltmeter, and such table also needs probe is measured or arranged to the distance of measured surface, and the length of this distance is called measuring distance.
Accurately and reliably whether the measured value of Non-contact Electrostatic Voltmeter and static electric field table, need to be traced to the source with calibrating installation.Electrostatic potential can be traceable on the DC high voltage standard.General calibrating installation adopts the method for standard static electric field, with a metal plate, forms equipotential plane, connects DC high-voltage source and maintains stable potential, and the electric field of close metal plate center is similar to parallel electric field, can be used as the standard electrostatic field.The instrument be calibrated is in the standard electrostatic field, and the reading on setpoint distance can be compared with the DC high-voltage source output voltage values, thereby reaches the purpose of calibration.As shown in Figure 1, a is while there is no measuring sonde, the electrostatic field distribution plan around metal plate, and the b in Fig. 1 is when measuring sonde is arranged, the electrostatic field distribution plan around metal plate.The area size size of above-mentioned metal plate is to affect the whether even and parallel key factor of the center standard electrostatic field, and size hour, can increase edge effect, makes the center electric field distortion, affects accuracy of measurement.About plane electrode size and edge effect, the research of following aspect is arranged: professor Wei Guanghui of (1) Shijiazhuang Ordnance Engineering College has studied the problem of plane electrode board size impact, delivered " Non-contact Electrostatic Voltmeter calibration steps; Beijing Institute of Technology's journal; in August, 2009, the 29th 2 phases of volume supplementary issue " paper.The discoid plane electrode plate research edge effect influence coefficient of one group of fixed measure of this thesis, finally adopt the battery lead plate of Φ 600mm to obtain the calibration of 1% uncertainty of measurement.(2) " electromagnetics metering " volume two, Commission of Science, Technology and Industry for National Defence's science and technology is write with quality department tissue, Atomic Energy Press, 2002.9, in book, mention: " size on plane should be enough large, the uncertainty impact of introducing to reduce boundary effect.Measuring distance is larger, and planar dimension is also larger, and to different measurands, the requirement of planar dimension is also different.Whether the size of Judge plane meets the demands, can do following experiment: along the direction that is parallel to electrode plane, be calibrated Non-contact Electrostatic Voltmeter to the edge parallel, mobile distance for the test electrode that is calibrated Non-contact Electrostatic Voltmeter at make progress 1/2nd times of size of the party; Under Correlation Centre position and eccentric position two states, be calibrated the reading of Non-contact Electrostatic Voltmeter.If the variation of reading is less than the permissible error requirement, planar dimension meets the demands." GJB " the GJB/J5972-2007 Non-contact Electrostatic Voltmeter calibrating standard drafted of the Liu Min of (3) Beijing Orient metrological testing technology research institute, army of Commission of Science, Technology and Industry for National Defence marks edition distribution department and publishes, army marks word No. 6872 " the edge effect experimental technique proposed; uncertainty impact that can the estimated edge effect; make the traceability of Non-contact Electrostatic Voltmeter there is objective basis, correctly the computation and measurement uncertainty.See Fig. 2.
There is following problem in prior art: (1) document (1) adopts the metal plate electrode of fixed measure as the standard electrostatic field generator, and the impact produced for edge effect can not qualitative assessment.(2) exposed metal plate electrode directly connects DC high-voltage source, and personnel's hidden danger of getting an electric shock is arranged, and especially, when reading the Non-contact Electrostatic Voltmeter reading, personnel must approach the live metal conductor, and danger is larger.(3) measuring distance is to be calibrated the instrument front end to the parallel distance between metal plate, measures more difficultly, and governor motion needs period regulation or calibrating, and whole censorship cost is higher, the transportation difficulty.(4) edge effect of above-mentioned document (2) and (3) test is identical method, needs accurate parallel moving mechanism.The table that the method requirement is calibrated is parallel to plane electrode and moves, and therefrom the mind-set edge moves, and the design of parallel movement apparatus will be guaranteed parallel, and whether its moving process is parallel, and the device for mechanical structural design has been proposed to a difficult problem.
Summary of the invention
Technical solution problem of the present invention is: overcome the deficiencies in the prior art, a kind of Non-contact Electrostatic Voltmeter calibrating installation and calibration steps are provided, the mechanism that does not need parallel, eliminated the error effect that parallel brings, simplify Design of Mechanical Structure, and, in the range observation of vertical movement, adopted dismountable vernier caliper, Length-traceable is simplified, reduced metage and use.Use glass plate rack bearing metal plate electrode, and the danger of using protective resistance minimizing personnel to be electrically shocked.Obtain and be calibrated the Non-contact Electrostatic Voltmeter reading by camera, make operating personnel away from dangerous live metal flat board.
Calibrating installation of the present invention can meet Non-contact Electrostatic Voltmeter and static electric field table calibration requirements, in measurement and calibration mechanism, uses, and very strong practicality is arranged.
The invention discloses a kind of Non-contact Electrostatic Voltmeter calibrating installation and calibration steps thereof, produce local parallel electrostatic field near the metal plate electrode centers, the Non-contact Electrostatic Voltmeter that is calibrated and the error of indication of electric field table are traceable on the DC high voltage standard.By the motion perpendicular to plane and vernier caliper, the measuring distance that is calibrated Non-contact Electrostatic Voltmeter is traceable on length geometric sense standard.Uncertainty of measurement for evaluation metal plate electrode edge effect is introduced, the present invention proposes the test method that increases edge effect.For convenience of tracing to the source of distance-measuring device, the present invention proposes the upright motion structure of detachable vernier caliper.For making the metal plate electrode keep flatness, and keep support and the earth insulating property, the present invention adopts the method for glass substrate album leave sheet metal.
Technical scheme of the present invention is: a kind of Non-contact Electrostatic Voltmeter calibrating installation, by ± (0～10) kV DC high-voltage source (1), protective resistance (2), selector switch (3), high-voltage conducting wires (4), central metal battery lead plate (5), edge metal battery lead plate (6), glass substrate support (7), lapping plate (8), vernier caliper (9), vertical movement mechanism (10) and be calibrated Non-contact Electrostatic Voltmeter (20) and form, DC high-voltage power supply (1) output connects an end of protective resistance (2), protective resistance (2) other end connects the left side pin of selector switch (3) by high-voltage conducting wires (4), the right pin of selector switch (3) connects the ground wire of DC high-voltage source (1), the middle pin of selector switch (3) connects central metal battery lead plate (5) and edge metal battery lead plate (6) by high-voltage conducting wires (4), central metal battery lead plate (5) and edge metal battery lead plate (6) stick on the same side of glass substrate support (7), lapping plate (8) is fixed together glass substrate support (7) and vertical movement mechanism (10), vernier caliper (9) is arranged on the instrument platform (14) in vertical movement mechanism (10), described DC high-voltage power supply (1) energy stable output DC voltage, output current is greater than 1mA, and the permissible error of setting value is less than and is calibrated 1/3 of Non-contact Electrostatic Voltmeter (20) limits of error limit, and resolving power is less than 10V, the voltage of described DC high-voltage source (1) output outputs to respectively central metal battery lead plate (5) and edge metal battery lead plate (6) independently through protective resistance (2) and selector switch (3), make metal electrode board produce stable electrostatic potential, this current potential is for the earth potential of DC high-voltage source (1), central metal battery lead plate (5) produces local parallel electrostatic field near the heart therein, produce uneven electrostatic field at edge metal battery lead plate (6), uneven electrostatic field causes the impact that is calibrated Non-contact Electrostatic Voltmeter (20) reading to be called edge effect thus, when center metal electrode board (5) and edge metal battery lead plate (6) not during equipotential, this edge effect meeting increases.
Described selector switch (3) by 5 independently single-pole double-throw switch (SPDT) form; the target of each switch connects 1 central metal battery lead plate (5) and 4 edge metal battery lead plates (6) by high-voltage conducting wires (4); the right pin of all switches is connected together; connect again the ground wire of DC high-voltage power supply (1); the left side pin of all switches is connected together, then connects protective resistance (2).
Described central metal battery lead plate (5) is disc-shape, described edge metal battery lead plate (6) is comprised of the sheet metal of 4 mutually insulateds, be circular and be distributed in central metal battery lead plate (5) up and down, and, with central metal battery lead plate (5) insulation, the clearance for insulation between all central metal plate (5) is greater than 1cm.
Described glass substrate support (7) is comprised of base (71), rigging-angle connector (72), glass plate (73), glass through hole (74), insulation handle (75) and fixed orifice (76), rigging-angle connector (72) is fixed together base (71) and glass plate (73), make glass plate (73) perpendicular to ground, 2 insulation handles (75) are arranged on respectively on the left and right of glass plate (73) on corner, fixed orifice (76) is the strip fillet through hole on base (71), regulate the lapping plate position fixedly the time with lapping plate (8), below the position that described glass through hole (74) is pasted at every metal electrode board, have 3 through holes below every central metal battery lead plate (5) at least, a through hole is wherein arranged for connecting high-voltage conducting wires (4), other through hole is for the bonded metal battery lead plate.
Described glass plate (73) is the square glass plate that area is greater than 60cm * 60cm, and surface resistivity is greater than 10
14Ω sqrt, body resistivity is greater than 10
14Ω m, surfacing is not yielding.
Described vertical movement mechanism (10) is comprised of pedestal (11), lead screw guide rails (12), handwheel (13) and instrument platform (14), mounting hole (15) on pedestal (11) is that the strip through hole can be connected with lapping plate (8) with bolt, but the relative position of adjusting base (11) and glass plate support (7), can regulate the verticality of lead screw guide rails (12) and glass plate (73), lead screw guide rails (12) is fixedly mounted on pedestal (11), instrument platform (14) can seesaw along the guide rail direction on lead screw guide rails (12), the satisfied Non-contact Electrostatic Voltmeter measuring distance area requirement that is calibrated of range of movement, handwheel (13) connects the leading screw in lead screw guide rails (12), can drive leading screw rotates, instrument platform (14) carrying is calibrated Non-contact Electrostatic Voltmeter (20), make to be calibrated the center of Non-contact Electrostatic Voltmeter (20) over against central metal battery lead plate (5), and the front end that is calibrated Non-contact Electrostatic Voltmeter (20) stretches out the instrument platform (14) in vertical movement mechanism (10).
Described instrument platform (14) is by motion bracket (16), fixture (17), spring leaf (18), shooting headstock (19) forms, motion bracket (16) can carry and be calibrated Non-contact Electrostatic Voltmeter (20) vertical movement on the centre normal of central metal battery lead plate (5), fixture (17) fixedly is calibrated Non-contact Electrostatic Voltmeter (20), adjustable clamp width adequate different in width be calibrated Non-contact Electrostatic Voltmeter (20), spring leaf (19) fixedly is calibrated Non-contact Electrostatic Voltmeter (20), what can adapt to different-thickness with the spring base lifting is calibrated Non-contact Electrostatic Voltmeter (20), shooting headstock (19) is arranged on motion bracket (16), for lift adjustment, adapt to the different display windows that are calibrated Non-contact Electrostatic Voltmeter, camera is installed to be convenient to being calibrated Non-contact Electrostatic Voltmeter (20) reading.
Described vernier caliper (9) is digital display calliper, the blade of vernier caliper (9) is fixed on pedestal (11), the vernier of vernier caliper (9) shows that the instrument platform (14) that partly is fixed on vertical movement mechanism (10) is upper, and one-piece construction can be dismantled, in order to regularly send metering mechanism to trace to the source.
9, Non-contact Electrostatic Voltmeter calibrating installation according to claim 1 is characterized in that: described protective resistance (2) is installed in totally enclosed insulating support, and it is as follows that its resistance design meets the correlation computations formula:
In formula:
R---protective resistance value, unit is ohm (Ω);
U
max---the maximum voltage of DC high-voltage source output, unit is volt (V);
I
safe---the safety current upper limit, unit is ampere (A);
δ
v---the relative voltage drop produced after protective resistance and insulation bleeder resistance dividing potential drop should be less than 0.1%;
R
s---the insulation resistance between metal electrode board is mainly surface resistance in clearance for insulation on glass plate, and unit is ohm (Ω);
D
1---the outside dimension of central metal battery lead plate, unit is rice (m);
D
2---the internal diameter size of edge metal battery lead plate, unit is rice (m);
σ
s---the surface resistivity of glass plate, the Ω sqrt of unit.
A kind of Non-contact Electrostatic Voltmeter calibration steps, comprise edge effect test, error of indication calibration, measuring distance calibration steps successively, described edge effect test is in order to determine or evaluation and the uncertainty of measurement introduced large not by central metal battery lead plate (5) diameter, four independent metal electrode boards of edge metal battery lead plate (6) are connected respectively to high voltage or ground connection, cause asymmetric fringe field to distribute, to increase edge effect, fringe field be distributed symmetrically with asymmetric situation under, be calibrated Non-contact Electrostatic Voltmeter (20) invariant position, obtain respectively survey measurements twice, get the uncertainty of measurement of the difference of survey measurements as the edge effect introducing, one of uncertainty of measurement source while being error of indication calibration, described error of indication calibration is to be output as normal voltage V with DC high-voltage source
swith the reading V that is calibrated Non-contact Electrostatic Voltmeter (20)
xcompare, obtain error of indication Δ V
x=V
x-V
s, error of indication calibration is to carry out under the measuring distance condition of the technical requirement defined that is calibrated Non-contact Electrostatic Voltmeter (20), this measuring distance is while being calibrated Non-contact Electrostatic Voltmeter (20) front end contact center metal electrode board (5) to be reference point, show and regulate the distance that the instrument platform (14) in vertical movement mechanism (10) moves with vernier caliper (9), if be calibrated Non-contact Electrostatic Voltmeter (20), the measuring distance indicator is arranged, with being calibrated Non-contact Electrostatic Voltmeter (20) indicator, regulate measuring distance, the calibration of described measuring distance is to be calibrated the actual measuring distance of Non-contact Electrostatic Voltmeter (20) can Measurement accuracy voltage the time in order to obtain, when being calibrated Non-contact Electrostatic Voltmeter (20) reading and equating with the output voltage of DC high-voltage source (1), being calibrated Non-contact Electrostatic Voltmeter (20) front end is actual measuring distance to the distance of central metal battery lead plate (5).
Described edge effect test is the test that increases the weight of edge effect, caused and is calibrated the poor of Non-contact Electrostatic Voltmeter (20) reading with the variation of edge effect, and the uncertainty of measurement of introducing as edge effect, the step of the difference of acquisition reading is as follows:
(1) operating selection switch (3), by all central metal battery lead plates (5) and edge metal battery lead plate (6) ground connection, being calibrated Non-contact Electrostatic Voltmeter (20) is placed on the instrument platform (14) in vertical movement mechanism (10), make to be calibrated more than Non-contact Electrostatic Voltmeter (20) front end stretches out platform 1cm, end face is parallel to central metal battery lead plate (5), rotate handwheel (13), instrument platform (14) in mobile vertical movement mechanism (10), make to be calibrated the front end contact center metal electrode board (5) of Non-contact Electrostatic Voltmeter (20), now the demonstration zero clearing of vernier caliper (9), if can not zero clearing record the reading of vernier caliper (9),
(2) rotate again handwheel (13), make the front end that is calibrated Non-contact Electrostatic Voltmeter (20) leave central metal battery lead plate (5), demonstration by vernier caliper (9) arrives the measuring distance that is calibrated Non-contact Electrostatic Voltmeter (20) regulation, if be calibrated Non-contact Electrostatic Voltmeter (20), the measuring distance indicator is arranged, with its indicator, be as the criterion, now record the reading of vernier caliper, regulate and be calibrated Non-contact Electrostatic Voltmeter (20) demonstration zero clearing;
(3) operating selection switch (3); central metal battery lead plate (5) is connected to protective resistance (2); one of them electrode of edge metal battery lead plate (6) is also connected to protective resistance (2); its excess-three electrode grounding; DC high-voltage source (1) output voltage is set for being calibrated the upper limit of Non-contact Electrostatic Voltmeter (20) range; output voltage, the reading that is calibrated Non-contact Electrostatic Voltmeter (20) is V
1;
(4) operating selection switch (3) again, make all central metal battery lead plates (5), edge metal battery lead plate (6) connect protective resistance (2) and obtain high voltage, and being calibrated Non-contact Electrostatic Voltmeter (20) reading is V
0;
(5) if Δ V=V
1-V
0be less than 1/3 of the limits of error limit that is calibrated Non-contact Electrostatic Voltmeter (20), the edge effect of central metal battery lead plate (5) can be ignored, otherwise Δ V is as one of uncertainty of measurement source;
(6) convert successively four absolute electrode connection status of edge metal battery lead plate (6); make an electrode connect protective resistance (2); other three electrode groundings; all by above-mentioned steps (2)～(5), do the edge effect test; under the different connection status of four electrodes of edge metal battery lead plate (6); measure 4 times, get the situation of Δ V maximum.
Described error of indication calibration steps is as follows:
(1) operating selection switch (3), by all central metal battery lead plates (5) and edge metal battery lead plate (6) ground connection, being calibrated Non-contact Electrostatic Voltmeter (20) is placed on the instrument platform (14) in vertical movement mechanism (10), make to be calibrated more than Non-contact Electrostatic Voltmeter (20) front end stretches out platform 1cm, end face is parallel to central metal battery lead plate (5), rotate handwheel (13), instrument platform (14) in mobile vertical movement mechanism (10), make to be calibrated the front end contact center metal electrode board (5) of Non-contact Electrostatic Voltmeter (20), now the demonstration zero clearing of vernier caliper (9), if can not zero clearing record the reading of vernier caliper (9),
(2) rotate again handwheel (13), make the front end that is calibrated Non-contact Electrostatic Voltmeter (20) leave central metal battery lead plate (5), demonstration by vernier caliper (9) arrives the measuring distance that is calibrated Non-contact Electrostatic Voltmeter (20) regulation, if be calibrated Non-contact Electrostatic Voltmeter (20), the measuring distance indicator is arranged, with its indicator, be as the criterion, now record the reading of vernier caliper, regulate and be calibrated Non-contact Electrostatic Voltmeter (20) demonstration zero clearing;
(3) operating selection switch (3), be connected protective resistance (2) by all central metal battery lead plates (5) with edge metal battery lead plate (6), and DC high-voltage source (1) output V is set
s, record is calibrated the reading V of Non-contact Electrostatic Voltmeter (20)
x, calculate error of indication Δ V
x=V
x-V
s;
(4) the uncertain uncertainty of measurement of being introduced by edge effect that comprises of the measurement of error of indication calibration, the uncertainty of measurement of being introduced by the DC high-voltage source limits of error and by the uncertainty of measurement of measuring distance introducing lack of standardization.
Described measuring distance calibration performing step is as follows:
(1) operating selection switch (3), by all central metal battery lead plates (5) and edge metal battery lead plate (6) ground connection, being calibrated Non-contact Electrostatic Voltmeter (20) is placed on the instrument platform (14) in vertical movement mechanism (10), make to be calibrated more than Non-contact Electrostatic Voltmeter (20) front end stretches out platform 1cm, end face is parallel to central metal battery lead plate (5), rotate handwheel (13), instrument platform (14) in mobile vertical movement mechanism (10), make to be calibrated the front end contact center metal electrode board (5) of Non-contact Electrostatic Voltmeter (20), now the demonstration zero clearing of vernier caliper (9), if can not zero clearing record the reading of vernier caliper (9),
(2) rotate again handwheel (13), make the front end that is calibrated Non-contact Electrostatic Voltmeter (20) leave central metal battery lead plate (5), demonstration by vernier caliper (9) approaches the measuring distance that is calibrated Non-contact Electrostatic Voltmeter (20) regulation, or approach measuring distance indicator distance to a declared goal, regulate and be calibrated Non-contact Electrostatic Voltmeter (20) demonstration zero clearing;
(3) when DC high-voltage source (1) is exported 1000V, control hand wheel (13), move forward and backward the instrument platform (14) in vertical movement mechanism (10), make to be calibrated Non-contact Electrostatic Voltmeter (20) reading and equal 1000V, now record vernier caliper (9) reading S
1, S
1as the measuring distance calibration result in the 1000V situation;
(4) again by DC high-voltage source (1) output-1000V, control hand wheel (13), move forward and backward the instrument platform (14) in vertical movement mechanism (10), make to be calibrated equal-1000V of Non-contact Electrostatic Voltmeter (20) reading, now record vernier caliper (9) reading S
2, S
2as the measuring distance calibration result in-1000V situation.
The present invention's beneficial effect compared with prior art is: Non-contact Electrostatic Voltmeter calibrating installation disclosed by the invention and calibration steps, adopted the metal plate electrode of a plurality of mutually insulateds, utilize the connection of selector switch, can realize increasing the weight of the test of edge effect, simplify in existing GJB GJB/J5792-2007 and be displaced sideways the edge effect test method that is calibrated Non-contact Electrostatic Voltmeter and carries out.The present invention has saved parallel moving mechanism, has simplified design, has also reduced the impact brought because sideway movement is not parallel.The present invention utilizes the insulating support of glass substrate as the metal plate electrode, makes the more smooth and stability of the shape of electrode, has reduced the impact of metal plate distortion, reduces in addition the area that can touch metal electrode, has strengthened security.The present invention has designed the totally enclosed insulation system of protective resistance, has strengthened security, and has provided under safety current and accuracy of measurement constraint condition the computing method of protective resistance resistance.The present invention has designed mounting base for camera head on the instrument platform of vertical travelling mechanism, and camera easy to use is observed and is calibrated the Non-contact Electrostatic Voltmeter reading, and operating personnel can telereading, has strengthened processing safety; But the present invention has used the electronic digital indicator of detachable zero clearing, making to be calibrated Non-contact Electrostatic Voltmeter is fixed on the instrument platform, when its front end contacting metal is dull and stereotyped, this vernier caliper records zero-bit, simplified the control method of measuring distance, the design of dismountable vernier caliper, be convenient to the vernier caliper censorship to metering mechanism, reduced the single unit system metage and used.
The accompanying drawing explanation
Fig. 1 is equipotential plane and the line of electric force schematic diagram of active sheet metal; Wherein scheming a is while there is no measuring sonde, the electrostatic field distribution plan around metal plate, and b is when measuring sonde is arranged, the electrostatic field distribution plan around metal plate;
Fig. 2 is the translation method edge effect test schematic diagram of prior art GJB/J5972-2007;
Fig. 3 is apparatus of the present invention general illustration;
Fig. 4 a is glass substrate support and metal electrode plate structure master schematic diagram in the present invention;
Fig. 4 b is glass substrate support and metal electrode board structure side schematic diagram in the present invention;
Fig. 4 c is glass substrate support and metal electrode board structural upright schematic diagram in the present invention;
Fig. 5 is that mesohigh wire of the present invention is through glass through hole and metal electrode board compression joint technique schematic diagram;
Fig. 6 is protective resistance insulating supporting structure in the present invention;
Fig. 7 is vertical movement mechanism structural representation in the present invention.
Embodiment
As shown in Figure 3, apparatus of the present invention general illustration, the Non-contact Electrostatic Voltmeter calibrating installation is by DC high-voltage source 1, protective resistance 2, selector switch 3, high-voltage conducting wires 4, central metal battery lead plate 5, edge metal battery lead plate 6, glass substrate support 7, lapping plate 8, vernier caliper 9, vertical movement mechanism 10 and be calibrated Non-contact Electrostatic Voltmeter 20 and form, DC high-voltage power supply 1 output connects an end of protective resistance 2, protective resistance 2 other ends connect the left side pin of selector switch 3 by high-voltage conducting wires 4, the right pin of selector switch 3 connects the ground wire of DC high-voltage source 1, the middle pin of selector switch 3 connects central metal battery lead plate 5 and edge metal battery lead plate 6 by high-voltage conducting wires 4, central metal battery lead plate 5 and edge metal battery lead plate 6 stick on the same side of the glass plate of glass substrate support 7, lapping plate 8 is fixed together glass substrate support 7 and vertical movement mechanism 10, vernier caliper 9 is arranged on vertical movement mechanism 10.
Described DC high-voltage power supply 1 energy stable output DC voltage, can be traceable to the DC high voltage measurement standard.Its output voltage range should cover and be calibrated the Non-contact Electrostatic Voltmeter scale range, output current is greater than 1mA, the permissible error of setting value is less than and is calibrated 1/3 of Non-contact Electrostatic Voltmeter limits of error limit, and resolving power is less than 10V, fertilizer index be voltage: ± 100V～± 20kV; The limits of error: ± (0.5% setting value+10V), can select commercial DC high-voltage source instrument according to the technical requirement that is calibrated Non-contact Electrostatic Voltmeter.The voltage of DC high-voltage source output outputs to respectively central metal battery lead plate and edge metal battery lead plate independently through protective resistance and selector switch, make metal electrode board produce stable electrostatic potential, this current potential is for the earth potential of DC high-voltage source, the central metal battery lead plate produces local parallel electrostatic field near the heart therein, produce uneven electrostatic field at the edge metal battery lead plate, uneven electrostatic field causes the impact that is calibrated the Non-contact Electrostatic Voltmeter reading to be called edge effect thus, when center metal electrode board and edge metal battery lead plate not during equipotential, this edge effect meeting increases.
Described selector switch 3 by 5 independently single-pole double-throw switch (SPDT) form, the target of each switch connects a central metal battery lead plate and four edge metal battery lead plates by high-voltage conducting wires, the right pin of all switches is connected together, connect again the ground wire of DC high-voltage power supply, the left side pin of all switches is connected together, then connects protective resistance; The withstand voltage 20kV that is greater than between each pin of switch.With adhering method, selector switch is fixed on to the same side of glass plate, at the back side of metal electrode.
Described central metal battery lead plate 5 is disc-shapes, described edge metal battery lead plate 6 is comprised of the sheet metal of four mutually insulateds, be circular and be distributed in the central metal battery lead plate up and down, and with the central metal pole plate insulating, clearance for insulation between all sheet metals is greater than 1cm, the center disk diameter is greater than 50cm, annulus width 3～5cm, sheet metal is used identical material, recommendation corrosion resistant plate, aluminium sheet or copper coin, plate thickness is difficult for compressive strain with finger is advisable, and generally is greater than 0.5mm, Metal Surface Roughness R
a<3.2 μ m.Also can adopt the methods such as spraying, plating to produce the sheet metal electrode.
As shown in Fig. 4 a, 4b and 4c, glass substrate support 7 is comprised of base 71, rigging-angle connector 72, glass plate 73, glass through hole 74, insulation handle 75 and fixed orifice 76, two rigging-angle connectors 72 are that insulating material is made, be arranged on the glass through hole of lower corner, glass plate left and right, base and glass plate are fixed together, make glass plate perpendicular to ground, base does not directly contact with glass, and the glass through hole can not the contacting metal battery lead plate.Two insulation handles 75 are arranged on respectively on the glass through hole of corner on the left and right of glass plate.Fixed orifice 76 is the strip fillet through holes on base, with lapping plate, can regulate the lapping plate position fixedly the time; Below the position that described glass through hole 74 is pasted at every metal electrode board, have three glass through holes at least below every metal electrode board, a glass through hole is wherein arranged for connecting high-voltage conducting wires, other through hole is for the bonded metal battery lead plate.Described glass plate 73 is square glass plates that area is greater than 65cm * 65cm, and surface resistivity is greater than 10
14Ω sqrt, body resistivity is greater than 10
14Ω m, surfacing is not yielding.Be convenient to glass processing when the glass through-hole diameter is greater than 10mm, also be convenient to bonding.
As shown in Figure 5, be that high-voltage conducting wires passes glass through hole and metal electrode board compression joint technique schematic diagram.There are five high-voltage conducting wires 4 to belong to battery lead plate 6 and is connected respectively with between a central metal battery lead plate 5 and four edges, connected mode employing crimping mode.After high-voltage conducting wires 4 is transferred to metal core wire 41, insert in the glass through hole 74, by metal core wire 41 contacting metal battery lead plates, then fill out 42 spaces of filling glass through hole 74 with cork.Bonding with bonding agent 43 between cork and glass.
As shown in Figure 6, be protective resistance insulating supporting structure figure.For preventing that personnel from touching the metal connecting portion; and limiting protecting resistance leakage current; the totally enclosed supporting structure 44 of protective resistance should being packed into; described supporting structure 44 comprises drum 45, capping 46, metal disk 47 and bolt 48; described drum 45 and two cappings 46 adopt polytetrafluoroethylmaterial material to make; with bolt 48, protective resistance 2 two ends and high-voltage conducting wires 4 are fixed on metal disk 46; metal disk 46 makes protective resistance coaxial with the drum inwall; and the maintenance gap, put into teflon drum 45.Capping 46 buckles into drum 45 two ends, and capping 46 centers have through hole can allow high-voltage conducting wires 4 draw through capping 46.The drum size is according to the size design of protective resistance, and the metal disk at two ends is greater than 5cm apart, and internal clearance is greater than 0.5cm.
In formula:
R---protective resistance value, unit is ohm (Ω);
U
max---the maximum voltage of DC high-voltage source output, unit is volt (V);
I
safe---the safety current upper limit, unit is ampere (A);
δ
v---the relative voltage drop produced after protective resistance and insulation bleeder resistance dividing potential drop should be less than 0.1%.
R
s---the insulation resistance between metal electrode board is mainly surface resistance in clearance for insulation on glass plate, and unit is ohm (Ω);
D
1---the outside dimension of central metal battery lead plate, unit is rice (m);
D
2---the internal diameter size of edge metal battery lead plate, unit is rice (m);
σ
s---the surface resistivity of glass plate, the Ω sqrt of unit;
If DC high-voltage source is exported maximum 20kV, the highest 0.5mA of safety current, protective resistance R>=20kV/0.5mA=40M Ω; If central metal battery lead plate external diameter 50cm, edge metal battery lead plate internal radius 51cm, glass surface resistivity 1 * 10
14Ω, allow voltage drop 0.1%, the insulation resistance R between metal electrode board
s=3.15 * 10
11Ω, protective resistance R<0.1% * 3.15 * 10
11Ω/(1-0.1%)=3.15 * 10
8Ω, in upper example, protective resistance should meet 40M Ω≤R<315M Ω.
As shown in Figure 7, be the vertical movement mechanism structural representation.Described vertical movement mechanism 10 is comprised of pedestal 11, lead screw guide rails 12, handwheel 13 and instrument platform 14, mounting hole 15 on pedestal 11 is that the strip through hole can be connected with lapping plate 8 with bolt, but the relative position of adjusting base 11 and glass plate support, can regulate the verticality of lead screw guide rails 12 and glass plate, lead screw guide rails 12 is fixedly mounted on pedestal 11, instrument platform 14 can seesaw along the guide rail direction on lead screw guide rails 12, range of movement is satisfied is calibrated Non-contact Electrostatic Voltmeter measuring distance area requirement, generally is greater than 40cm.The leading screw that handwheel 13 connects in lead screw guide rails 12, can drive leading screw and rotate.Instrument platform 14 carrying is calibrated Non-contact Electrostatic Voltmeter, makes to be calibrated the center of Non-contact Electrostatic Voltmeter over against the central metal battery lead plate, and the front end that is calibrated Non-contact Electrostatic Voltmeter stretches out the instrument platform.
Described instrument platform 14 is by motion bracket 16, fixture 17, spring leaf 18, shooting headstock 19 forms, motion bracket 16 can carry and be calibrated Non-contact Electrostatic Voltmeter vertical movement on the centre normal of central metal battery lead plate, fixture 17 fixedly is calibrated Non-contact Electrostatic Voltmeter, adjustable clamp width adequate different in width be calibrated Non-contact Electrostatic Voltmeter, spring leaf 19 fixedly is calibrated Non-contact Electrostatic Voltmeter, can adapt to the spring base lifting Non-contact Electrostatic Voltmeter that is calibrated of different-thickness, shooting headstock 19 is arranged on motion bracket 16, liftable is regulated, adapt to the different display windows that are calibrated Non-contact Electrostatic Voltmeter, camera can be installed to be convenient to being calibrated the Non-contact Electrostatic Voltmeter reading,
Described vernier caliper 9 is digital display calliper, and the blade of vernier caliper is fixed on pedestal 11, and the vernier of vernier caliper shows that part is fixed on instrument platform 14, and one-piece construction can be dismantled, in order to regularly send metering mechanism to trace to the source.
A kind of Non-contact Electrostatic Voltmeter calibration steps of the present invention, comprise edge effect test, error of indication calibration, measuring distance calibration;
Described edge effect test is in order to determine or evaluation and the uncertainty of measurement introduced large not by central metal battery lead plate 5 diameters, in the parallel static electric field of the positive generation of the electric field induction device that is calibrated Non-contact Electrostatic Voltmeter, it is the basic demand of calibration steps, but because the metal plate electrode size is limited, its edge effect will change the parallel electric field condition, affect accuracy of measurement.If the impact of edge effect can be by test determination, and be less than and be calibrated 1/3 of the Non-contact Electrostatic Voltmeter permissible error limit, this impact can be ignored, or this impact is calculated among uncertainty of measurement.
Described edge effect test is the test method that increases the weight of edge effect, caused and is calibrated the poor of Non-contact Electrostatic Voltmeter reading with the variation of edge effect, and the uncertainty of measurement of introducing as edge effect, the step of the difference of acquisition reading is as follows:
(1) at first will be calibrated Non-contact Electrostatic Voltmeter 20 and be placed on the instrument platform 14, make to be calibrated more than Non-contact Electrostatic Voltmeter 20 front ends stretch out platform 1cm, adjusting is calibrated the Non-contact Electrostatic Voltmeter front position, makes its distance to central metal battery lead plate 5 for being calibrated the measuring distance of Non-contact Electrostatic Voltmeter regulation.
(2) operating selection switch 3, by all metal electrode plate earthings, regulate and are calibrated Non-contact Electrostatic Voltmeter demonstration zero clearing.
(3) operating selection switch 3, and central metal battery lead plate 5 is connected to protective resistance 2, edge metal battery lead plate 6 one of them electrode also connected to protective resistance 2, its excess-three electrode grounding.It is the upper limit that is calibrated the Non-contact Electrostatic Voltmeter range that DC high-voltage source 1 output voltage is set, output voltage, and the reading that is calibrated Non-contact Electrostatic Voltmeter is V
1.
(4) operating selection switch 3 again, make all metal electrode boards connect protective resistance 2 and obtain high voltages, and being calibrated the Non-contact Electrostatic Voltmeter reading is V
0.
(5) if Δ V=V
1-V
0be less than 1/3 of the limits of error limit that is calibrated Non-contact Electrostatic Voltmeter.The edge effect of central metal battery lead plate 5 can be ignored, otherwise Δ V is as one of uncertainty of measurement source.
(6) convert successively four absolute electrode connection status of edge metal battery lead plate 6; make an electrode connect protective resistance 2; other three electrode groundings; all by above-mentioned steps (2)～(5), do the edge effect test; under the different connection status of four electrodes of edge metal battery lead plate; measure 4 times, get the situation of Δ V maximum.
Error of indication calibration steps is as follows:
(1) operating selection switch 3, by all metal electrode plate earthings, being calibrated Non-contact Electrostatic Voltmeter 20 is placed on instrument platform 14, make to be calibrated more than the Non-contact Electrostatic Voltmeter front end stretches out platform 1cm, end face is parallel to central metal battery lead plate 5, rotate handwheel 13, mobile instrument platform, make to be calibrated the front end contact center metal electrode board of Non-contact Electrostatic Voltmeter.Now, the demonstration zero clearing of vernier caliper 9, if can not zero clearing record the reading of vernier caliper.
(2) rotate again handwheel 13, make the front end that is calibrated Non-contact Electrostatic Voltmeter leave central metal battery lead plate 5, demonstration by vernier caliper arrives the measuring distance that is calibrated the Non-contact Electrostatic Voltmeter regulation, if be calibrated Non-contact Electrostatic Voltmeter, the measuring distance indicator is arranged, with its indicator, be as the criterion, now record the reading of vernier caliper.Adjusting is calibrated Non-contact Electrostatic Voltmeter and shows zero clearing.
(3) operating selection switch 3, and all metal electrode boards are connected to protective resistance 2, and DC high-voltage source 1 output V is set
s, record is calibrated the reading V of Non-contact Electrostatic Voltmeter
x.Calculate error of indication Δ V
x=V
x-V
s.
The calibration of described measuring distance is to be calibrated the actual measuring distance of Non-contact Electrostatic Voltmeter 20 when the correct reading in order to obtain.When being calibrated the output voltage of Non-contact Electrostatic Voltmeter reading with DC high-voltage source 1 and equating, being calibrated the Non-contact Electrostatic Voltmeter front end is actual measuring distance to the distance of central metal battery lead plate 5.The measuring distance calibration steps is as follows:
(1) (1) of at first above-mentioned error of indication calibration steps, the operation of (2) step;
(2), when DC high-voltage source 1 is exported 1000V, control hand wheel 13, move forward and backward instrument platform 14, makes to be calibrated Non-contact Electrostatic Voltmeter 20 readings and equal 1000V, now records the reading S of vernier caliper 9
1, record S
1as the measuring distance calibration result in the 1000V situation;
(3) again by DC high-voltage source 1 output-1000V, control hand wheel 13, move forward and backward instrument platform 14, makes to be calibrated equal-1000V of Non-contact Electrostatic Voltmeter reading, now records the reading S of vernier caliper 9
2, record S
2as the measuring distance calibration result in-1000V situation.
In a word, the present invention compares with the edge effect test in the GJB/J5972-2007 standard, and the present invention does not need the mechanism of parallel, has eliminated the error effect that parallel brings, and simplifies Design of Mechanical Structure.And in the range observation of vertical movement, adopted dismountable vernier caliper, Length-traceable is simplified, reduced metage and use.Use glass plate rack bearing metal plate electrode, and the danger of using protective resistance minimizing personnel to be electrically shocked.Obtain and be calibrated the Non-contact Electrostatic Voltmeter reading by camera, make operating personnel away from dangerous live metal flat board.And calibrating installation of the present invention can meet Non-contact Electrostatic Voltmeter and static electric field table calibration requirements, in measurement and calibration mechanism, use, very strong practicality is arranged.
Non-elaborated part of the present invention belongs to those skilled in the art's known technology.
Claims (13)
1. a Non-contact Electrostatic Voltmeter calibrating installation is characterized in that: by DC high-voltage source (1), protective resistance (2), selector switch (3), high-voltage conducting wires (4), central metal battery lead plate (5), edge metal battery lead plate (6), glass substrate support (7), lapping plate (8), vernier caliper (9), vertical movement mechanism (10) be calibrated Non-contact Electrostatic Voltmeter (20) and form, DC high-voltage power supply (1) output connects an end of protective resistance (2), protective resistance (2) other end connects the left side pin of selector switch (3) by high-voltage conducting wires (4), the right pin of selector switch (3) connects the ground wire of DC high-voltage source (1), the middle pin of selector switch (3) connects central metal battery lead plate (5) and edge metal battery lead plate (6) by high-voltage conducting wires (4), central metal battery lead plate (5) and edge metal battery lead plate (6) stick on the same side of glass substrate support (7), lapping plate (8) is fixed together glass substrate support (7) and vertical movement mechanism (10), vernier caliper (9) is arranged on the instrument platform (14) in vertical movement mechanism (10), described DC high-voltage power supply (1) energy stable output DC voltage, output current is greater than 1mA, and the permissible error of setting value is less than and is calibrated 1/3 of Non-contact Electrostatic Voltmeter (20) limits of error limit, and resolving power is less than 10V, the voltage of described DC high-voltage source (1) output outputs to respectively central metal battery lead plate (5) and edge metal battery lead plate (6) independently through protective resistance (2) and selector switch (3), make metal electrode board produce stable electrostatic potential, this current potential is for the earth potential of DC high-voltage source (1), central metal battery lead plate (5) produces local parallel electrostatic field near the heart therein, produce uneven electrostatic field at edge metal battery lead plate (6), uneven electrostatic field causes the impact that is calibrated Non-contact Electrostatic Voltmeter (20) reading to be called edge effect thus, when center metal electrode board (5) and edge metal battery lead plate (6) not during equipotential, this edge effect meeting increases.
2. Non-contact Electrostatic Voltmeter calibrating installation according to claim 1; it is characterized in that: described selector switch (3) by 5 independently single-pole double-throw switch (SPDT) form; the target of each switch connects 1 central metal battery lead plate (5) and 4 edge metal battery lead plates (6) by high-voltage conducting wires (4); the right pin of all switches is connected together; connect again the ground wire of DC high-voltage power supply (1); the left side pin of all switches is connected together, then connects protective resistance (2).
3. Non-contact Electrostatic Voltmeter calibrating installation according to claim 1, it is characterized in that: described central metal battery lead plate (5) is disc-shape, described edge metal battery lead plate (6) is comprised of the sheet metal of 4 mutually insulateds, be circular and be distributed in central metal battery lead plate (5) up and down, and, with central metal battery lead plate (5) insulation, the clearance for insulation between all central metal plate (5) is greater than 1cm.
4. Non-contact Electrostatic Voltmeter calibrating installation according to claim 1 is characterized in that: described glass substrate support (7) is comprised of base (71), rigging-angle connector (72), glass plate (73), glass through hole (74), insulation handle (75) and fixed orifice (76), rigging-angle connector (72) is fixed together base (71) and glass plate (73), make glass plate (73) perpendicular to ground, 2 insulation handles (75) are arranged on respectively on the left and right of glass plate (73) on corner, fixed orifice (76) is the strip fillet through hole on base (71), regulate the lapping plate position fixedly the time with lapping plate (8), below the position that described glass through hole (74) is pasted at every metal electrode board, have 3 through holes below every central metal battery lead plate (5) at least, a through hole is wherein arranged for connecting high-voltage conducting wires (4), other through hole is for the bonded metal battery lead plate.
5. Non-contact Electrostatic Voltmeter calibrating installation according to claim 4, it is characterized in that: described glass plate (73) is the square glass plate that area is greater than 60cm * 60cm, and surface resistivity is greater than 10
14Ω sqrt, body resistivity is greater than 10
14Ω m, surfacing is not yielding.
6. Non-contact Electrostatic Voltmeter calibrating installation according to claim 1, it is characterized in that: described vertical movement mechanism (10) is comprised of pedestal (11), lead screw guide rails (12), handwheel (13) and instrument platform (14), mounting hole (15) on pedestal (11) is that the strip through hole can be connected with lapping plate (8) with bolt, but the relative position of adjusting base (11) and glass plate support (7), can regulate the verticality of lead screw guide rails (12) and glass plate (73), lead screw guide rails (12) is fixedly mounted on pedestal (11), instrument platform (14) can seesaw along the guide rail direction on lead screw guide rails (12), the satisfied Non-contact Electrostatic Voltmeter measuring distance area requirement that is calibrated of range of movement, handwheel (13) connects the leading screw in lead screw guide rails (12), can drive leading screw rotates, instrument platform (14) carrying is calibrated Non-contact Electrostatic Voltmeter (20), make to be calibrated the center of Non-contact Electrostatic Voltmeter (20) over against central metal battery lead plate (5), and the front end that is calibrated Non-contact Electrostatic Voltmeter (20) stretches out the instrument platform (14) in vertical movement mechanism (10).
7. Non-contact Electrostatic Voltmeter calibrating installation according to claim 6, it is characterized in that: described instrument platform (14) is by motion bracket (16), fixture (17), spring leaf (18), shooting headstock (19) forms, motion bracket (16) can carry and be calibrated Non-contact Electrostatic Voltmeter (20) vertical movement on the centre normal of central metal battery lead plate (5), fixture (17) fixedly is calibrated Non-contact Electrostatic Voltmeter (20), adjustable clamp width adequate different in width be calibrated Non-contact Electrostatic Voltmeter (20), spring leaf (19) fixedly is calibrated Non-contact Electrostatic Voltmeter (20), what can adapt to different-thickness with the spring base lifting is calibrated Non-contact Electrostatic Voltmeter (20), shooting headstock (19) is arranged on motion bracket (16), for lift adjustment, adapt to the different display windows that are calibrated Non-contact Electrostatic Voltmeter, camera is installed to be convenient to being calibrated Non-contact Electrostatic Voltmeter (20) reading.
8. Non-contact Electrostatic Voltmeter calibrating installation according to claim 1, it is characterized in that: described vernier caliper (9) is digital display calliper, the blade of vernier caliper (9) is fixed on pedestal (11), the vernier of vernier caliper (9) shows that part is fixed on the instrument platform (14) of vertical movement mechanism (10), one-piece construction can be dismantled, in order to regularly send metering mechanism to trace to the source.
9. Non-contact Electrostatic Voltmeter calibrating installation according to claim 1, it is characterized in that: described protective resistance (2) is installed in totally enclosed insulating support, and it is as follows that its resistance design meets the correlation computations formula:
In formula:
R---protective resistance value, unit is ohm (Ω);
U
max---the maximum voltage of DC high-voltage source output, unit is volt (V);
I
safe---the safety current upper limit, unit is ampere (A);
δ
v---the relative voltage drop produced after protective resistance and insulation bleeder resistance dividing potential drop should be less than 0.1%;
R
s---the insulation resistance between metal electrode board is mainly surface resistance in clearance for insulation on glass plate, and unit is ohm (Ω);
D
1---the outside dimension of central metal battery lead plate, unit is rice (m);
D
2---the internal diameter size of edge metal battery lead plate, unit is rice (m);
σ
s---the surface resistivity of glass plate, the Ω sqrt of unit.
10. a Non-contact Electrostatic Voltmeter calibration steps, is characterized in that: comprise successively edge effect test, error of indication calibration, measuring distance calibration steps, described edge effect test is in order to determine or evaluation and the uncertainty of measurement introduced large not by central metal battery lead plate (5) diameter, four independent metal electrode boards of edge metal battery lead plate (6) are connected respectively to high voltage or ground connection, cause asymmetric fringe field to distribute, to increase edge effect, fringe field be distributed symmetrically with asymmetric situation under, be calibrated Non-contact Electrostatic Voltmeter (20) invariant position, obtain respectively survey measurements twice, get the uncertainty of measurement of the difference of survey measurements as the edge effect introducing, one of uncertainty of measurement source while being error of indication calibration, described error of indication calibration is to be output as normal voltage V with DC high-voltage source
swith the reading V that is calibrated Non-contact Electrostatic Voltmeter (20)
xcompare, obtain error of indication Δ V
x=V
x-V
s, error of indication calibration is to carry out under the measuring distance condition of the technical requirement defined that is calibrated Non-contact Electrostatic Voltmeter (20), this measuring distance is while being calibrated Non-contact Electrostatic Voltmeter (20) front end contact center metal electrode board (5) to be reference point, show and regulate the distance that the instrument platform (14) in vertical movement mechanism (10) moves with vernier caliper (9), if be calibrated Non-contact Electrostatic Voltmeter (20), the measuring distance indicator is arranged, with being calibrated Non-contact Electrostatic Voltmeter (20) indicator, regulate measuring distance, the calibration of described measuring distance is to be calibrated the actual measuring distance of Non-contact Electrostatic Voltmeter (20) can Measurement accuracy voltage the time in order to obtain, when being calibrated Non-contact Electrostatic Voltmeter (20) reading and equating with the output voltage of DC high-voltage source (1), being calibrated Non-contact Electrostatic Voltmeter (20) front end is actual measuring distance to the distance of central metal battery lead plate (5).
11. a kind of Non-contact Electrostatic Voltmeter calibration steps according to claim 10, it is characterized in that: described edge effect test is the test that increases the weight of edge effect, caused and be calibrated the poor of Non-contact Electrostatic Voltmeter (20) reading with the variation of edge effect, the uncertainty of measurement of introducing as edge effect, the step of the difference of acquisition reading is as follows:
(1) operating selection switch (3), by all central metal battery lead plates (5) and edge metal battery lead plate (6) ground connection, being calibrated Non-contact Electrostatic Voltmeter (20) is placed on the instrument platform (14) in vertical movement mechanism (10), make to be calibrated more than Non-contact Electrostatic Voltmeter (20) front end stretches out platform 1cm, end face is parallel to central metal battery lead plate (5), rotate handwheel (13), instrument platform (14) in mobile vertical movement mechanism (10), make to be calibrated the front end contact center metal electrode board (5) of Non-contact Electrostatic Voltmeter (20), now the demonstration zero clearing of vernier caliper (9), if can not zero clearing record the reading of vernier caliper (9),
(2) rotate again handwheel (13), make the front end that is calibrated Non-contact Electrostatic Voltmeter (20) leave central metal battery lead plate (5), demonstration by vernier caliper (9) arrives the measuring distance that is calibrated Non-contact Electrostatic Voltmeter (20) regulation, if be calibrated Non-contact Electrostatic Voltmeter (20), the measuring distance indicator is arranged, with its indicator, be as the criterion, now record the reading of vernier caliper, regulate and be calibrated Non-contact Electrostatic Voltmeter (20) demonstration zero clearing;
(3) operating selection switch (3); central metal battery lead plate (5) is connected to protective resistance (2); one of them electrode of edge metal battery lead plate (6) is also connected to protective resistance (2); its excess-three electrode grounding; DC high-voltage source (1) output voltage is set for being calibrated the upper limit of Non-contact Electrostatic Voltmeter (20) range; output voltage, the reading that is calibrated Non-contact Electrostatic Voltmeter (20) is V
1;
(4) operating selection switch (3) again, make all central metal battery lead plates (5), edge metal battery lead plate (6) connect protective resistance (2) and obtain high voltage, and being calibrated Non-contact Electrostatic Voltmeter (20) reading is V
0;
(5) if Δ V=V
1-V
0be less than 1/3 of the limits of error limit that is calibrated Non-contact Electrostatic Voltmeter (20), the edge effect of central metal battery lead plate (5) can be ignored, otherwise Δ V is as one of uncertainty of measurement source;
(6) convert successively the connection status of four absolute electrodes in edge metal battery lead plate (6); make an electrode connect protective resistance (2); other three electrode groundings; all by above-mentioned steps (2)～(5), do the edge effect test; under the different connection status of four electrodes of edge metal battery lead plate (6); measure 4 times, get the situation of Δ V maximum.
12. Non-contact Electrostatic Voltmeter calibration steps according to claim 10 is characterized in that: described error of indication calibration performing step is as follows:
(1) operating selection switch (3), by all central metal battery lead plates (5) and edge metal battery lead plate (6) ground connection, being calibrated Non-contact Electrostatic Voltmeter (20) is placed on the instrument platform (14) in vertical movement mechanism (10), make to be calibrated more than Non-contact Electrostatic Voltmeter (20) front end stretches out platform 1cm, end face is parallel to central metal battery lead plate (5), rotate handwheel (13), instrument platform (14) in mobile vertical movement mechanism (10), make to be calibrated the front end contact center metal electrode board (5) of Non-contact Electrostatic Voltmeter (20), now the demonstration zero clearing of vernier caliper (9), if can not zero clearing record the reading of vernier caliper (9),
(2) rotate again handwheel (13), make the front end that is calibrated Non-contact Electrostatic Voltmeter (20) leave central metal battery lead plate (5), demonstration by vernier caliper (9) arrives the measuring distance that is calibrated Non-contact Electrostatic Voltmeter (20) regulation, if be calibrated Non-contact Electrostatic Voltmeter (20), the measuring distance indicator is arranged, with its indicator, be as the criterion, now record the reading of vernier caliper, regulate and be calibrated Non-contact Electrostatic Voltmeter (20) demonstration zero clearing;
(3) operating selection switch (3), be connected protective resistance (2) by all central metal battery lead plates (5) with edge metal battery lead plate (6), and DC high-voltage source (1) output V is set
s, record is calibrated the reading V of Non-contact Electrostatic Voltmeter (20)
x, calculate error of indication Δ V
x=V
x-V
s;
(4) the uncertain uncertainty of measurement of being introduced by edge effect that comprises of the measurement of error of indication calibration, the uncertainty of measurement of being introduced by the DC high-voltage source limits of error and by the uncertainty of measurement of measuring distance introducing lack of standardization.
13. Non-contact Electrostatic Voltmeter calibration steps according to claim 10, is characterized in that, described measuring distance calibration performing step is as follows:
(1) operating selection switch (3), by all central metal battery lead plates (5) and edge metal battery lead plate (6) ground connection, being calibrated Non-contact Electrostatic Voltmeter (20) is placed on the instrument platform (14) in vertical movement mechanism (10), make to be calibrated more than Non-contact Electrostatic Voltmeter (20) front end stretches out platform 1cm, end face is parallel to central metal battery lead plate (5), rotate handwheel (13), instrument platform (14) in mobile vertical movement mechanism (10), make to be calibrated the front end contact center metal electrode board (5) of Non-contact Electrostatic Voltmeter (20), now the demonstration zero clearing of vernier caliper (9), if can not zero clearing record the reading of vernier caliper (9),
(2) rotate again handwheel (13), make the front end that is calibrated Non-contact Electrostatic Voltmeter (20) leave central metal battery lead plate (5), demonstration by vernier caliper (9) approaches the measuring distance that is calibrated Non-contact Electrostatic Voltmeter (20) regulation, or approach measuring distance indicator distance to a declared goal, regulate and be calibrated Non-contact Electrostatic Voltmeter (20) demonstration zero clearing;
(3) when DC high-voltage source (1) is exported 1000V, control hand wheel (13), move forward and backward the instrument platform (14) in vertical movement mechanism (10), make to be calibrated Non-contact Electrostatic Voltmeter (20) reading and equal 1000V, now record vernier caliper (9) reading S
1, S
1as the measuring distance calibration result in the 1000V situation;
(4) again by DC high-voltage source (1) output-1000V, control hand wheel (13), move forward and backward the instrument platform (14) in vertical movement mechanism (10), make to be calibrated equal-1000V of Non-contact Electrostatic Voltmeter (20) reading, now record vernier caliper (9) reading S
2, S
2as the measuring distance calibration result in-1000V situation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310303386.9A CN103499798B (en) | 2013-07-18 | 2013-07-18 | A kind of Non-contact Electrostatic Voltmeter calibrating installation and calibration steps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310303386.9A CN103499798B (en) | 2013-07-18 | 2013-07-18 | A kind of Non-contact Electrostatic Voltmeter calibrating installation and calibration steps |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103499798A true CN103499798A (en) | 2014-01-08 |
| CN103499798B CN103499798B (en) | 2016-02-10 |
Family
ID=49865021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310303386.9A Active CN103499798B (en) | 2013-07-18 | 2013-07-18 | A kind of Non-contact Electrostatic Voltmeter calibrating installation and calibration steps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103499798B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301538A (en) * | 2014-07-16 | 2016-02-03 | 中国科学院空间科学与应用研究中心 | Calibration device for electrostatic discharge monitoring instrument |
| CN105387779A (en) * | 2014-08-27 | 2016-03-09 | 株式会社三丰 | Measuring instrument |
| CN105675960A (en) * | 2016-02-19 | 2016-06-15 | 中国科学院力学研究所 | Apparatus and method for measuring open-circuit voltage of piezoelectric device |
| CN105842643A (en) * | 2016-06-08 | 2016-08-10 | 无锡市计量检定测试中心 | Non-contact electrostatic test instrument automatic calibration device |
| CN106443544A (en) * | 2016-09-26 | 2017-02-22 | 北京无线电计量测试研究所 | Non-contact electrometer calibrating device and method |
| CN107547787A (en) * | 2017-09-26 | 2018-01-05 | 广东欧珀移动通信有限公司 | Camera assembly and mobile terminal |
| CN109425845A (en) * | 2017-09-05 | 2019-03-05 | 弗兰克公司 | The calibration system of voltage measuring apparatus |
| CN109683028A (en) * | 2018-12-25 | 2019-04-26 | 上海安平静电科技有限公司 | A kind of electrostatic detection methods and device |
| CN110007160A (en) * | 2019-03-15 | 2019-07-12 | 山东超越数控电子股份有限公司 | A kind of Electrostatic Potential Measure System, method and equipment |
| CN114245553A (en) * | 2021-12-03 | 2022-03-25 | 北京东方计量测试研究所 | Plasma parameter calibration method |
| TWI771748B (en) * | 2020-09-10 | 2022-07-21 | 台灣積體電路製造股份有限公司 | Apparatus and method for measuring environment electrostatic and system for monitoring and controlling environment electrostatic |
| CN114779147A (en) * | 2022-04-07 | 2022-07-22 | 中国工程物理研究院计量测试中心 | Remote control non-contact type electrostatic voltmeter calibration method |
| CN115248412A (en) * | 2022-04-07 | 2022-10-28 | 中国工程物理研究院计量测试中心 | Calibrating device of remote control non-contact static voltmeter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU523340A1 (en) * | 1974-08-15 | 1976-07-30 | Всесоюзный научно-исследовательский институт аналитического приборостроения | Capacitive sensor |
| US5989409A (en) * | 1995-09-11 | 1999-11-23 | Cygnus, Inc. | Method for glucose sensing |
| TW200909838A (en) * | 2007-08-31 | 2009-03-01 | King Yuan Electronics Co Ltd | A calibration assembly for an electrometer, and fabrication method and calibration method thereof |
| CN101452066A (en) * | 2007-12-06 | 2009-06-10 | 京元电子股份有限公司 | Static voltmeter correcting assembly, making method thereof and correcting method thereof |
| CN201489105U (en) * | 2009-09-10 | 2010-05-26 | 莱州市电子仪器有限公司 | Voltage calibration device of frictional static electricity tester |
-
2013
- 2013-07-18 CN CN201310303386.9A patent/CN103499798B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU523340A1 (en) * | 1974-08-15 | 1976-07-30 | Всесоюзный научно-исследовательский институт аналитического приборостроения | Capacitive sensor |
| US5989409A (en) * | 1995-09-11 | 1999-11-23 | Cygnus, Inc. | Method for glucose sensing |
| TW200909838A (en) * | 2007-08-31 | 2009-03-01 | King Yuan Electronics Co Ltd | A calibration assembly for an electrometer, and fabrication method and calibration method thereof |
| CN101452066A (en) * | 2007-12-06 | 2009-06-10 | 京元电子股份有限公司 | Static voltmeter correcting assembly, making method thereof and correcting method thereof |
| CN201489105U (en) * | 2009-09-10 | 2010-05-26 | 莱州市电子仪器有限公司 | Voltage calibration device of frictional static electricity tester |
Non-Patent Citations (2)
| Title |
|---|
| 董著勇等: "非接触式静电电压表校准装置研究", 《自动化与仪器仪表》 * |
| 魏光辉等: "非接触式静电电压表校准方法", 《大连理工大学学报》 * |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301538A (en) * | 2014-07-16 | 2016-02-03 | 中国科学院空间科学与应用研究中心 | Calibration device for electrostatic discharge monitoring instrument |
| CN105387779A (en) * | 2014-08-27 | 2016-03-09 | 株式会社三丰 | Measuring instrument |
| CN105675960A (en) * | 2016-02-19 | 2016-06-15 | 中国科学院力学研究所 | Apparatus and method for measuring open-circuit voltage of piezoelectric device |
| CN105675960B (en) * | 2016-02-19 | 2018-09-18 | 中国科学院力学研究所 | A kind of device and method measuring piezoelectric device open-circuit voltage |
| CN105842643A (en) * | 2016-06-08 | 2016-08-10 | 无锡市计量检定测试中心 | Non-contact electrostatic test instrument automatic calibration device |
| CN106443544B (en) * | 2016-09-26 | 2019-01-18 | 北京无线电计量测试研究所 | A kind of contactless electrometer calibrating installation and method |
| CN106443544A (en) * | 2016-09-26 | 2017-02-22 | 北京无线电计量测试研究所 | Non-contact electrometer calibrating device and method |
| CN109425845A (en) * | 2017-09-05 | 2019-03-05 | 弗兰克公司 | The calibration system of voltage measuring apparatus |
| CN107547787A (en) * | 2017-09-26 | 2018-01-05 | 广东欧珀移动通信有限公司 | Camera assembly and mobile terminal |
| CN107547787B (en) * | 2017-09-26 | 2019-08-13 | Oppo广东移动通信有限公司 | Camera assembly and mobile terminal |
| CN109683028A (en) * | 2018-12-25 | 2019-04-26 | 上海安平静电科技有限公司 | A kind of electrostatic detection methods and device |
| CN109683028B (en) * | 2018-12-25 | 2021-08-10 | 上海安平静电科技有限公司 | Electrostatic detection method and device |
| CN110007160A (en) * | 2019-03-15 | 2019-07-12 | 山东超越数控电子股份有限公司 | A kind of Electrostatic Potential Measure System, method and equipment |
| TWI771748B (en) * | 2020-09-10 | 2022-07-21 | 台灣積體電路製造股份有限公司 | Apparatus and method for measuring environment electrostatic and system for monitoring and controlling environment electrostatic |
| CN114245553A (en) * | 2021-12-03 | 2022-03-25 | 北京东方计量测试研究所 | Plasma parameter calibration method |
| CN114779147A (en) * | 2022-04-07 | 2022-07-22 | 中国工程物理研究院计量测试中心 | Remote control non-contact type electrostatic voltmeter calibration method |
| CN115248412A (en) * | 2022-04-07 | 2022-10-28 | 中国工程物理研究院计量测试中心 | Calibrating device of remote control non-contact static voltmeter |
| CN114779147B (en) * | 2022-04-07 | 2022-11-22 | 中国工程物理研究院计量测试中心 | Remote control non-contact type electrostatic voltmeter calibration method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103499798B (en) | 2016-02-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103499798B (en) | A kind of Non-contact Electrostatic Voltmeter calibrating installation and calibration steps | |
| CN103135086B (en) | The caliberating device of DC electric field measurement instrument and demarcation thereof and method of calibration | |
| CN106443544B (en) | A kind of contactless electrometer calibrating installation and method | |
| CA2890581C (en) | Hot stick power analyzer | |
| CN109459621B (en) | Non-contact type measuring system for conductor suspension potential | |
| CN109799377A (en) | Electric railway step voltage and contact voltage test macro and its method | |
| CN104931803B (en) | A kind of insulating materials surface potential variation real-time measurement system | |
| CN107884631B (en) | Method and system for measuring power frequency electric field intensity | |
| CN108362928A (en) | Contact net voltage non-contact type measuring device and method | |
| CN106501612B (en) | Based on the double-back portions of non uniform transmission line with tower route zero sequence parameter measurement method | |
| CN104007330A (en) | Device for measuring space charges in transformer oil under impulse voltages | |
| CN107209216B (en) | Charge plate monitor and its application method | |
| CN105403848A (en) | Verification device for novel capacitive equipment on-line monitoring system | |
| JP2021500529A (en) | Electrostatic self-energy supply strain grid sensor | |
| US9664720B2 (en) | Device for the contactless determination of an electrical potential of an object, current probe, and method | |
| US9170280B2 (en) | Indirect non-contact high voltage measurement on electrical power line | |
| CN205992356U (en) | A kind of position direct-reading analog electrostatic field drawing apparatus | |
| CN106053951B (en) | A method of monitoring vertical calculating capacitance using hollow electronic compensating electrode | |
| CN207908574U (en) | Contact net voltage non-contact type measuring device | |
| CN110425973A (en) | Thickness detection apparatus, method, system, storage medium and processor | |
| Johansson et al. | Probe for measurements of the DC electric field in air around high voltage apparatus | |
| Zou et al. | Calculation of the ionized field of±800 kV high voltage DC power lines with the presence of charged atmospheric particles | |
| CN205103317U (en) | Measurement device for solid insulating material volume resistivity | |
| Källstrand et al. | Measurements of high voltage DC fields in air | |
| CN202770916U (en) | Current transformer no-load voltage ratio tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |