CN106098528A - A kind of apparatus and method reducing ionic migration spectrometer ion gate inductive kick - Google Patents
A kind of apparatus and method reducing ionic migration spectrometer ion gate inductive kick Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
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- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/64—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
Abstract
A kind of apparatus and method reducing ionic migration spectrometer ion gate inductive kick, this device includes bipolarity adjustable ion gate driver, it includes signal generator and two direct current adjustable isolation electric powers, two direct current adjustable isolation electric powers are respectively to two arrays of electrodes output voltage on ion gate, signal generator controls two direct current adjustable isolation electric powers to the phase place of two arrays of electrodes output voltage on ion gate, by the output of two direct current adjustable isolation electric powers of regulation to realize the regulation of two arrays of electrodes voltage amplitude value difference on ion gate, and/or by the output of regulation signal generator to realize the regulation of two arrays of electrodes voltage phase difference on ion gate, so that the electromagnetic radiation that ion gate two arrays of electrodes voltage jump produces is cancelled out each other effectively.The method reduces its spacing electromagnetic radiation inductive kick by amplitude and/or the phase place of driving voltage on regulation ion gate two arrays of electrodes, and then effectively reduces the inductive kick formed on Faraday plate due to ion gate voltage jump.
Description
Technical field
The present invention relates to ionic migration spectrometer, particularly relate to a kind of ionic migration spectrometer ion gate inductive kick of reducing
Apparatus and method.
Background technology
Ion mobility spectrometry is that a kind of trace materials examines technology soon, has simple in construction, highly sensitive, detection speed is fast, often
The advantage of pressure work.Ionic migration spectrometer controls charged particle by the way of switching ion door and enters drift with specific pattern
Move district, separated after detected by detector.
The on off state of ion gate is typically to utilize the mode of the two-stage pressure reduction on ion gate driver regulation ion gate
Realize: when the current potential on two arrays of electrodes on ion gate is equal, ion gate is opened, and ion is passed through；When on ion gate two
When there is certain pressure reduction in the current potential of group electrode, ion gate is closed, and the ion near ion gate is low by got on ion gate
In potential electrode group, ion can not pass through.
Inductive kick in ion mobility spectrometry is the impact arteries and veins detected on the detector ion gate voltage jump moment
Punching.Owing to the voltage on ion gate is high pressure, on ion gate, two arrays of electrodes saltus step pressure reduction is very big (generally higher than 80V), at switch
The biggest electromagnetic radiation can be produced during saltus step, and bigger inductive kick can be detected on the detector, to useful signal
Detection cause greatly interference.For Fourier transformation ionic migration spectrometer (FT-IMS), due to instrument have twice from
Cervical orifice of uterus, and second ion gate from detector distance very close to (general less than 10mm), the inductive kick of formation is even more serious,
Even can make useful signal annihilated fall.
At present, ion gate typically uses bilateral symmetry control, and i.e. when closing door state, on ion gate, one group of electrode exceeds base
The value that quasi-voltage is certain, and the value that another group electrode is identical less than reference voltage.Such as, under closing door state, when ion gate base
When quasi-voltage is 3500V, the voltage on ion gate two arrays of electrodes is respectively 3540V, 3460V.With certain FREQUENCY CONTROL ion
Door trip, just can make ion stream pass through in a corresponding manner.This control mode typically uses the side of electric resistance partial pressure from main circuit
Formula realizes, and adjustability is poor, it is impossible to asymmetricly change the relative voltage of two electrode groups of ion gate, it is difficult to by regulation ion gate
The mode of voltage reduces inductive kick.It addition, ion gate switching moments, the electric field of drift region will be affected, especially
In Fourier transformation ionic migration spectrometer, owing to ion gate switching frequency is relatively big, the stability of drift region electric field be will result in
The biggest impact.
In actual application, owing to ion gate type of drive and geometry etc. exist the biggest difference, existing ion gate
Type of drive is difficult to effectively weaken inductive kick.
Summary of the invention
Present invention is primarily targeted at and overcome the deficiencies in the prior art, it is provided that a kind of reduction ionic migration spectrometer ion gate
The apparatus and method of inductive kick.
For achieving the above object, the present invention is by the following technical solutions:
A kind of device reducing ionic migration spectrometer ion gate inductive kick, including bipolarity adjustable ion gate driver,
Ion gate driver that described bipolarity is adjustable includes signal generator and two direct current adjustable isolation electric powers, and said two direct current can
Adjust insulating power supply respectively to two arrays of electrodes output voltage on ion gate, described signal generator control said two direct current adjustable every
From power supply to the phase place of two arrays of electrodes output voltage on ion gate, wherein by regulation said two direct current adjustable isolation electric power
Export to realize the regulation of two arrays of electrodes voltage amplitude value difference on ion gate, and/or by regulating the defeated of described signal generator
Go out to realize the regulation of two arrays of electrodes voltage phase difference on ion gate, so that what ion gate two arrays of electrodes voltage jump produced
Electromagnetic radiation is cancelled out each other effectively, and then effectively reduces the inductive kick formed on Faraday plate.
Further:
Ion gate driver that described bipolarity is adjustable also includes two groups of photoswitch modules and high_voltage isolation module and two
Group metal-oxide-semiconductor, wherein two groups of metal-oxide-semiconductors and two direct current adjustable isolation electric power series connection, two groups of metal-oxide-semiconductors all include two MOS connected
Pipe, in the group of two groups of metal-oxide-semiconductors, concatenation point is coupled with the two arrays of electrodes of ion gate, the concatenation point between two groups of metal-oxide-semiconductors and two
Concatenation point between direct current adjustable isolation electric power is connected and together connects reference voltage V ref of ion gate, described signal generator
First outfan receives two grids of first group of metal-oxide-semiconductor by first group of photoswitch module and high_voltage isolation module, described
Second outfan of signal generator receives the two of second group of metal-oxide-semiconductor by second group of photoswitch module and high_voltage isolation module
Individual grid.
Described signal generator produces that two-way amplitude is identical, the impulse wave of phase 180 ° or square-wave signal, uses respectively
In the work of two photoswitch modules of control, under the protection of high_voltage isolation module, control the duty of two groups of metal-oxide-semiconductors, from
And make voltage Vo saltus step between direct current adjustable isolation electric power two-stage output voltage VH, VL of access ion gate.
Described ion gate is TP ion gate or BN ion gate.
Described ionic migration spectrometer is signal averaging ionic migration spectrometer (SA-IMS) or Fourier transformation ion mobility spectrometry
Instrument (FT-IMS).
A kind of method reducing ionic migration spectrometer ion gate inductive kick, uses described reduction ionic migration spectrometer
The device of ion gate inductive kick, on regulation ion gate two arrays of electrodes, amplitude and/or the phase place of driving voltage reduce its space electricity
Magnetic radiation inductive kick.
Further:
Realized ion by the output of the direct current adjustable isolation electric power in regulation bipolarity adjustable ion gate driver
The regulation of two arrays of electrodes voltage amplitude value difference on door, the ion caused due to ion gate configuration and manufacturing and positioning errors with compensation
The difference of the reverse induction impact that door two arrays of electrodes is formed during voltage jump on ionic migration spectrometer Faraday plate.
By the phase place of the low pressure gate-control signal that the signal generator in regulation bipolarity adjustable ion gate driver generates
Realize the regulation of two arrays of electrodes voltage phase difference on ion gate, to compensate due to ion gate configuration and processing and assembling by mistake
The reverse induction that the ion gate two arrays of electrodes that difference causes is formed during voltage jump on ionic migration spectrometer Faraday plate
The difference of impact.
Realized ion by the output of the direct current adjustable isolation electric power in regulation bipolarity adjustable ion gate driver
The regulation of two arrays of electrodes voltage amplitude value difference on door, and by the signal generator in regulation bipolarity adjustable ion gate driver
The phase place of low pressure gate-control signal generated realizes the regulation of two arrays of electrodes voltage phase difference on ion gate, compensate due to from
The ion gate two arrays of electrodes that cervical orifice of uterus structure and manufacturing and positioning errors cause during voltage jump at ionic migration spectrometer
The difference of the reverse induction impact formed on Faraday plate.
A kind of ionic migration spectrometer, has the described device reducing ionic migration spectrometer ion gate inductive kick.
Beneficial effects of the present invention:
For traditional ionic migration spectrometer, due to the error produced during the processing of BN ion gate and assembling, or due to
The distance of TP ion gate two arrays of electrodes distance detector is unequal, though cause employing bilateral symmetry switch drive pattern can not
The electromagnetic radiation making ion gate two arrays of electrodes produce is cancelled out each other effectively, thus yet suffers from bigger inductive kick.This
The bright difference in magnitude by the voltage on regulation ion gate two arrays of electrodes and phase contrast, can effectively compensate for owing to ion gate is processed
Assembling equal error, TP ion gate two arrays of electrodes by tandem, structure itself there is the two arrays of electrodes that unsymmetry is brought
The difference of electromagnetic radiation be (the reverse induction impact that ion gate two arrays of electrodes is formed during voltage jump on Faraday plate
Difference), reduce the impact of its spacing electromagnetic radiation, be effectively improved owing to the voltage on ion gate two arrays of electrodes is during saltus step
Energy radiates the problem that can not effectively reduce, and then effectively reduces the inductive kick formed on Faraday plate and to effectively
The annoyance level of signal.
Accompanying drawing explanation
Fig. 1 is a kind of device schematic diagram reducing ionic migration spectrometer ion gate inductive kick；
Fig. 2 is SA-IMS structure (BN ion gate) signal utilizing bipolarity adjustable ion gate driver to reduce inductive kick
Figure；
Fig. 3 is SA-IMS structure (TP ion gate) signal utilizing bipolarity adjustable ion gate driver to reduce inductive kick
Figure；
Fig. 4 is FT-IMS structure (BN ion gate) signal utilizing bipolarity adjustable ion gate driver to reduce inductive kick
Figure；
Fig. 5 is FT-IMS structure (TP ion gate) signal utilizing bipolarity adjustable ion gate driver to reduce inductive kick
Figure；
Fig. 6 is ion gate two electrode voltage and the inductive interference of generation thereof of bipolar ion gate driver generation；
Fig. 7 is the situation schematic diagram that the maximum of the inductive interference that ion gate two electrode each produces exists phase contrast.
Detailed description of the invention
Hereinafter embodiments of the present invention are elaborated.It is emphasized that what the description below was merely exemplary,
Rather than in order to limit the scope of the present invention and application thereof.
Refering to Fig. 1, in one embodiment, a kind of device reducing ionic migration spectrometer ion gate inductive kick, including
Ion gate driver that bipolarity is adjustable, ion gate driver that described bipolarity is adjustable includes that signal generator and two direct currents are adjustable
Insulating power supply 1,2, said two direct current adjustable isolation electric power 1,2 respectively to two arrays of electrodes output voltage Vo1, Vo2 on ion gate,
Described signal generator control two arrays of electrodes output voltage Vo1 on 1,2 pairs of ion gates of said two direct current adjustable isolation electric power,
The phase place of Vo2, wherein by the output of regulation said two direct current adjustable isolation electric power 1,2 to realize on ion gate two groups of electricity
The regulation of pole tension Vo1, Vo2 difference in magnitude, and/or by regulating the output of described signal generator to realize on ion gate two
The regulation of group electrode voltage phase contrast, so that the electromagnetic radiation that ion gate two arrays of electrodes voltage jump produces the most mutually is supported
Disappear, and then effectively reduce the inductive kick formed on Faraday plate.
As it is shown in figure 1, in a preferred embodiment, ion gate driver that described bipolarity is adjustable also includes that two groups of light are established by cable
Close module and high_voltage isolation module and two groups of metal-oxide-semiconductors, wherein two groups of metal-oxide-semiconductors and two direct current adjustable isolation electric power 1,2 strings
Connection, two groups of metal-oxide-semiconductors all include two metal-oxide-semiconductors connected, and in the group of two groups of metal-oxide-semiconductors, concatenation point is coupled with two groups of electricity of ion gate
Pole, the concatenation o'clock between two groups of metal-oxide-semiconductors is connected with the concatenation point between two direct current adjustable isolation electric powers 1,2 and together connects ion
Reference voltage V ref of door, the first outfan of described signal generator passes through first group of photoswitch module and high_voltage isolation
Module receives two grids of first group of metal-oxide-semiconductor, and the second outfan of described signal generator passes through second group of photoswitch mould
Block and high_voltage isolation module receive two grids of second group of metal-oxide-semiconductor.
In a preferred embodiment, described signal generator produces that two-way amplitude is identical, the impulse wave of phase 180 °
Or square-wave signal, it is respectively used to control the work of two photoswitch modules, under the protection of high_voltage isolation module, controls two groups
The duty of metal-oxide-semiconductor so that access ion gate voltage Vo direct current adjustable isolation electric power two-stage output voltage VH, VL it
Between saltus step.
In certain embodiments, described ion gate can be TP ion gate or BN ion gate.
In certain embodiments, described ionic migration spectrometer can be to use TP ion gate or the signal averaging of BN ion gate
Ionic migration spectrometer (SA-IMS), it is also possible to be to use TP ion gate or the Fourier transformation ionic migration spectrometer of BN ion gate
(FT-IMS)。
In another kind of embodiment, a kind of method reducing ionic migration spectrometer ion gate inductive kick, use aforementioned
The device reducing ionic migration spectrometer ion gate inductive kick of one embodiment, driving voltage on regulation ion gate two arrays of electrodes
Amplitude and/or phase place reduce its spacing electromagnetic radiation inductive kick.
In the particular embodiment, can be by the direct current adjustable insulating electricity in regulation bipolarity adjustable ion gate driver
The output in source realizes the regulation of two arrays of electrodes voltage amplitude value difference on ion gate, to compensate due to ion gate configuration and processing
The ion gate two arrays of electrodes formation on ionic migration spectrometer Faraday plate during voltage jump caused with rigging error
The difference of reverse induction impact.
In the particular embodiment, can be generated by the signal generator in regulation bipolarity adjustable ion gate driver
The phase place of low pressure gate-control signal realize the regulation of two arrays of electrodes voltage phase difference on ion gate, to compensate due to ion gate
The ion gate two arrays of electrodes that structure and manufacturing and positioning errors cause during voltage jump at ionic migration spectrometer farad
The difference of the reverse induction impact formed on dish.
In the particular embodiment, can be by the direct current adjustable insulating electricity in regulation bipolarity adjustable ion gate driver
The output in source realizes the regulation of two arrays of electrodes voltage amplitude value difference on ion gate, and by the regulation adjustable ion gate of bipolarity
The phase place of the low pressure gate-control signal that the signal generator in driver generates realizes two arrays of electrodes voltage-phase on ion gate
The regulation of difference, compensates the ion gate two arrays of electrodes caused due to ion gate configuration and manufacturing and positioning errors at voltage jump
During on ionic migration spectrometer Faraday plate formed reverse induction impact difference.
In another kind of embodiment, a kind of ionic migration spectrometer, there is the reduction ion mobility spectrometry of aforementioned any embodiment
The device of instrument ion gate inductive kick.
The specific embodiment of the invention and advantage thereof is further described below in conjunction with accompanying drawing.
As shown in Figure 6, the embodiment of the present invention uses bipolar ion door type of drive, i.e. ion gate by door opening state to pass
During door state switching, one group of electrode positive transition ((a) part of Fig. 6), and another group electrode negative sense saltus step ((b) portion of Fig. 6
Point), the inductive interference making two groups of ion gate electrode saltus step processes cause obtains neutralizing compensation, thus reaches to reduce inductive interference
Purpose.As shown in (c), (d), (e) part of Fig. 6, wherein, ion gate electrode shown in (a) part that (c) part is Fig. 6 of Fig. 6
The inductive kick that voltage produces, the sensing punching that ion gate electrode voltage shown in (b) part that (d) part is Fig. 6 of Fig. 6 produces
Hitting, (e) part of Fig. 6 is the inductive kick after neutralizing.
Owing to the two arrays of electrodes of TP ion gate is in tandem, there is unsymmetry in structure itself, two arrays of electrodes is at farad
Certain difference can be there is in intensity and the phase place of the inductive interference produced on dish；BN ion gate is also due to manufacture and assemble by mistake
Difference existence and can not make inductive interference obtain eliminate thoroughly.Such as (a), (b) of Fig. 7, to partially illustrate ion gate two electrode each
The situation of phase contrast is there is from the maximum of the inductive interference produced.The embodiment of the present invention is further with the adjustable ion of bipolarity
Gate driver reduces ion mobility spectrometry inductive kick by difference in magnitude and/or the phase contrast of regulation ion gate driving voltage.Logical
Overregulate difference in magnitude and/or the phase contrast of gate voltage on ion gate two arrays of electrodes, improve owing to BN ion gate adds frock
Join the ion gate two that the unequal construction features of distance of equal error and TP ion gate two arrays of electrodes distance detector is brought
The voltage on group electrode energy during saltus step radiates the problem that can not effectively reduce.
Embodiment 1
The present embodiment predominantly utilizes the mode of regulation ion gate two arrays of electrodes voltage amplitude value difference to reduce inductive kick.
Structure (such as TP ion gate) or the existence of manufacturing and positioning errors (such as BN ion gate), ion due to ion gate
The intensity size of the inductive kick produced on each comfortable Faraday plate of two arrays of electrodes on door may there are differences, so that sensing
Impact can not effectively be cut down.
The present embodiment can use the adjustable ion gate driver of bipolarity as shown in Figure 1, by regulation ion gate driver
The output voltage of middle regulated power supply regulates the amplitude (i.e. the amplitude of (a), (b) part of Fig. 6) of the voltage of electrode on ion gate,
Thus reduce the inductive kick that two groups of ion gate electrodes produce on Faraday plate intensity difference (i.e. Fig. 6 (c), (d) part
Difference in magnitude), make inductive kick further be cut down.
Further, on the regulation ion gate in the present embodiment, the method for the amplitude of the voltage of two arrays of electrodes is alternatively other
Regulative mode, as realized the regulation etc. of voltage magnitude by the resistance of regulation divider resistance.
Embodiment 2
The present embodiment predominantly utilizes the mode of regulation ion gate two arrays of electrodes voltage phase difference to reduce inductive kick.
Structure (such as TP ion gate) or the existence of manufacturing and positioning errors (such as BN ion gate), ion due to ion gate
The phase place of the inductive kick produced on each comfortable Faraday plate of two arrays of electrodes on door may there are differences, so that inductive kick
Can not effectively be cut down.
The present embodiment can use the adjustable ion gate driver of bipolarity as shown in Figure 1, is produced by regulation signal generator
The raw phase contrast controlling low-voltage signal regulates the phase contrast of the voltage of electrode on ion gate, makes ion gate two arrays of electrodes each
The inductive interference produced is cancelled out each other in strength, so that inductive kick is cut down effectively.
Further, on the regulation ion gate in the present embodiment, the method for the phase contrast of the voltage of two arrays of electrodes is alternatively it
His mode.
Embodiment 3
The present embodiment is the example reducing inductive kick for the ionic migration spectrometer using BN ion gate.
The present embodiment can use the adjustable ion gate driver of bipolarity as shown in Figure 1, is applied to as shown in Figure 2, Figure 4 shows
BN ion gate.As shown in Figure 2, Figure 4 shows, from the bleeder circuit of ionic migration spectrometer, draw ion gate reference voltage V ref, access
In ion gate driver that bipolarity is adjustable on the concatenation point of two direct current adjustable isolation electric powers, then by adjustable for bipolarity ion gate
Two outfans in driver are respectively connected to two electrodes of ion gate.
Signal generator produces that two-way amplitude is identical, the impulse wave of phase 180 ° or square-wave signal, is respectively used to control
The work of two-way optical-electric module processed, controls the duty of two metal-oxide-semiconductors under the protection of high_voltage isolation module, so that accessing
The voltage Vo of ion gate saltus step between direct current adjustable isolation electric power two-stage output voltage VH, VL.By regulation regulated power supply
Voltage exports, and i.e. can reach the purpose of the amplitude of regulation ion gate electrode voltage；The low voltage control that regulation signal generator produces
The phase place of signal, i.e. can reach the purpose of the phase place of regulation ion gate electrode voltage.
Owing to certainly existing certain error during the processing of BN ion gate and assembling, even if causing employing bilateral symmetry to be opened
The electromagnetic radiation that pass drive pattern can not make ion gate two arrays of electrodes produce is cancelled out each other effectively, thus yet suffers from bigger
Inductive kick.By the difference in magnitude of voltage on regulation ion gate two arrays of electrodes and phase contrast, can effectively compensate for due to
The difference of the two arrays of electrodes electromagnetic radiation that ion gate process and assemble equal error is brought, thus greatly weaken inductive kick.
Embodiment 4
The present embodiment is the example reducing inductive kick for the ionic migration spectrometer using TP ion gate.
The present embodiment can use the adjustable ion gate driver of bipolarity as shown in Figure 1, is applied to as shown in Fig. 3, Fig. 5
TP ion gate.As shown in Fig. 3, Fig. 5, for applying the ionic migration spectrometer of TP ion gate, filled ion gate driver is also bipolar
The adjustable ion gate driver of property.The concrete method reducing inductive kick is similar to Example 3, can be left under order by regulation bipolarity
The output voltage of the direct current adjustable isolation electric power in cervical orifice of uterus driver regulates the sensing that two arrays of electrodes on ion gate each produces
The intensity of impact, regulates two arrays of electrodes on ion gate by the phase place of the low-voltage control signal of regulation signal generator generation each
From the phase place of the inductive kick produced, thus realize maximizing the purpose reducing inductive kick.
Embodiment 5
The present embodiment is about a kind of signal averaging ionic migration spectrometer (SA-IMS), and it both can be to use BN ion gate
SA-IMS (as shown in Figure 2), it is also possible to be use TP ion gate SA-IMS (shown in Fig. 3).
The concrete method reducing inductive kick is similar to Example 3, can use the adjustable ion of bipolarity as shown in Figure 1
Gate driver, by the output voltage of direct current adjustable isolation electric power in regulation bipolarity adjustable ion gate driver regulate from
The intensity of the inductive kick that two arrays of electrodes each produces on cervical orifice of uterus, by the low-voltage control signal of regulation signal generator generation
Phase place regulates the phase place of the inductive kick that two arrays of electrodes on ion gate each produces, thus realizes maximizing reduction inductive kick
Purpose.
Embodiment 6
The present embodiment is about in a kind of Fourier transformation ionic migration spectrometer (FT-IMS), its both can be use BN from
The FT-IMS (as shown in Figure 4) of cervical orifice of uterus, it is also possible to be the FT-IMS (as shown in Figure 5) using TP ion gate.
The concrete method reducing inductive kick is similar to Example 3, can use the adjustable ion of bipolarity as shown in Figure 1
Gate driver, by the output voltage of direct current adjustable isolation electric power in regulation bipolarity adjustable ion gate driver regulate from
The intensity of the inductive kick that two arrays of electrodes each produces on cervical orifice of uterus, by the low-voltage control signal of regulation signal generator generation
Phase place regulates the phase place of the inductive kick that two arrays of electrodes on ion gate each produces, thus realizes maximizing reduction inductive kick
Purpose.
Above content is to combine concrete/further description the most made for the present invention, it is impossible to recognize
Determine the present invention be embodied as be confined to these explanations.For general technical staff of the technical field of the invention,
Without departing from the inventive concept of the premise, these embodiments having described that can also be made some replacements or modification by it,
And these substitute or variant all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. the device reducing ionic migration spectrometer ion gate inductive kick, it is characterised in that include the adjustable ion of bipolarity
Gate driver, ion gate driver that described bipolarity is adjustable includes signal generator and two direct current adjustable isolation electric powers, described
Two direct current adjustable isolation electric powers are respectively to two arrays of electrodes output voltage on ion gate, and described signal generator controls said two
Direct current adjustable isolation electric power is to the phase place of two arrays of electrodes output voltage on ion gate, wherein adjustable by regulation said two direct current
Exporting with realization the regulation of two arrays of electrodes voltage amplitude value difference on ion gate of insulating power supply, and/or by regulating described signal
The output of generator is to realize the regulation of two arrays of electrodes voltage phase difference on ion gate, so that ion gate two arrays of electrodes voltage
The spacing electromagnetic radiation that saltus step produces is cancelled out each other effectively, and then effectively reduces the sensing punching formed on Faraday plate
Hit.
2. device as claimed in claim 1, it is characterised in that ion gate driver that described bipolarity is adjustable also includes two groups of light
Electric switch module and high_voltage isolation module and two groups of metal-oxide-semiconductors, wherein two groups of metal-oxide-semiconductors and two direct current adjustable isolation electric power strings
Connection, two groups of metal-oxide-semiconductors all include two metal-oxide-semiconductors connected, and in the group of two groups of metal-oxide-semiconductors, concatenation point is coupled with two groups of electricity of ion gate
Pole, the concatenation o'clock between two groups of metal-oxide-semiconductors is connected with the concatenation point between two direct current adjustable isolation electric powers and together connects ion gate
Reference voltage V ref, the first outfan of described signal generator pass through first group of photoswitch module and high_voltage isolation module
Receive two grids of first group of metal-oxide-semiconductor, the second outfan of described signal generator by second group of photoswitch module and
High_voltage isolation module receives two grids of second group of metal-oxide-semiconductor.
3. device as claimed in claim 1, it is characterised in that described signal generator generation two-way amplitude is identical, phase place phase
Differ from impulse wave or the square-wave signal of 180 °, be respectively used to control the work of two photoswitch modules, in high_voltage isolation module
The lower duty controlling two groups of metal-oxide-semiconductors of protection, so that accessing the voltage Vo of ion gate in direct current adjustable isolation electric power two-stage
Saltus step between output voltage VH, VL.
4. the device as described in any one of claims 1 to 3, it is characterised in that described ion gate is TP ion gate or BN ion
Door.
5. the device as described in any one of claims 1 to 3, it is characterised in that described ionic migration spectrometer be signal averaging from
Sub-mobility spectrometer (SA-IMS) or Fourier transformation ionic migration spectrometer (FT-IMS).
6. the method reducing ionic migration spectrometer ion gate inductive kick, it is characterised in that use claim 1 to 5 times
One described device reducing ionic migration spectrometer ion gate inductive kick, driving voltage on regulation ion gate two arrays of electrodes
Amplitude and/or phase place reduce its spacing electromagnetic radiation inductive kick.
Method the most according to claim 6, it is characterised in that by regulation bipolarity adjustable ion gate driver in straight
The output of stream adjustable isolation electric power realizes the regulation of two arrays of electrodes voltage amplitude value difference on ion gate, to compensate due to ion gate
The ion gate two arrays of electrodes that structure and manufacturing and positioning errors cause during voltage jump at ionic migration spectrometer farad
The difference of the reverse induction impact formed on dish.
Method the most according to claim 6, it is characterised in that by the letter in regulation bipolarity adjustable ion gate driver
The phase place of the low pressure gate-control signal that number generator generates realizes the regulation of two arrays of electrodes voltage phase difference on ion gate, to mend
Repay the ion gate two arrays of electrodes caused due to ion gate configuration and manufacturing and positioning errors during voltage jump at ion
The difference of the reverse induction impact formed on mobility spectrometer Faraday plate.
Method the most according to claim 6, it is characterised in that: by regulation bipolarity adjustable ion gate driver in straight
The output of stream adjustable isolation electric power realizes the regulation of two arrays of electrodes voltage amplitude value difference on ion gate, and bipolar by regulation
Property adjustable ion gate driver in the phase place of low pressure gate-control signal that generates of signal generator realize on ion gate two groups
The regulation of electrode voltage phase contrast, compensates the ion gate two groups electricity caused due to ion gate configuration and manufacturing and positioning errors
The difference of the reverse induction impact that pole is formed during voltage jump on ionic migration spectrometer Faraday plate.
10. an ionic migration spectrometer, it is characterised in that there is the reduction ion mobility spectrometry described in any one of claim 1 to 5
The device of instrument ion gate inductive kick.
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| CN110176382A (en) * | 2019-06-04 | 2019-08-27 | 清华大学深圳研究生院 | A kind of ionic migration spectrometer ion gate switch door control method and ionic migration spectrometer |
| CN110491765A (en) * | 2018-11-25 | 2019-11-22 | 中国科学院大连化学物理研究所 | A kind of control method of ion mobility spectrometry intermediate ion door |
| CN110534395A (en) * | 2019-08-27 | 2019-12-03 | 清华大学深圳研究生院 | A kind of ion door control method for ionic migration spectrometer |
| CN110571126A (en) * | 2019-08-09 | 2019-12-13 | 清华大学深圳研究生院 | Ion gate control method for ion mobility spectrometer |
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| CN110176382B (en) * | 2019-06-04 | 2021-01-29 | 清华大学深圳研究生院 | Ion mobility spectrometer and ion gate opening and closing control method thereof |
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| CN110534395B (en) * | 2019-08-27 | 2022-03-11 | 清华大学深圳研究生院 | Ion gate control method for ion mobility spectrometer |
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