CN100426604C - Actuator power-supply for driving laser diode - Google Patents
Actuator power-supply for driving laser diode Download PDFInfo
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- CN100426604C CN100426604C CNB2006100360657A CN200610036065A CN100426604C CN 100426604 C CN100426604 C CN 100426604C CN B2006100360657 A CNB2006100360657 A CN B2006100360657A CN 200610036065 A CN200610036065 A CN 200610036065A CN 100426604 C CN100426604 C CN 100426604C
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- laser diode
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Abstract
A switch power for driving laser light emitting diode, including: the adjusting operating current multi-circle potentiometer and the operating current amplifier that connect with each other, the setting most current multi-circle potentiometer and the setting current amplifier that connect with each other, the operating current amplifier and the setting current amplifier connect with the current value comparison selecting gate, the output of the current value comparison selecting gate connects with the outputting current controller, the outputting current controller connects with the laser by the big current power module. The invention is: high stability power, settable most operating current, forcible zero startup function, high power factor and high power efficiency.
Description
[technical field]
The present invention relates to a kind of Switching Power Supply, particularly relates to a kind of Switching Power Supply that is used to drive big electric current laser diode.
[background technology]
Semiconductor laser is a kind of electroluminescent device, and when stable electric current injected semiconductor laser, it can send the laser of certain wavelength.Because costing an arm and a leg of big electric current diode laser matrix, and be easy to be subjected to electric injury, the laser of output can be because of the unstable wavelength instability that causes its output of drive current, so high power diode laser has been stipulated very strict specification requirement to its driving power, mainly contains: the direct current of output will be up to more than tens of amperes; Want strict control overshoot and current break when powering up to laser tube; Require high current stability, and low ripple coefficient; High Power Factor and electrical efficiency; The complete protection Circuits System particularly for the energising again behind self-locking and the unexpected power network fluctuation, does not allow laser tube is produced surge yet.Chinese patent CN02147761.2 has disclosed a kind of constant-current source that is used for semiconductor laser, provide to little current semiconductor laser that output is stable, reliable, strong, the continuously adjustable constant-current source of antijamming capability, the damage that the noise spectra of semiconductor lasers of avoiding having a power failure suddenly causes.But this constant-current source still fails to solve as other power supply current stabilization problems such as Control current overshoot and current break, circuit self-locking and power network fluctuations.
Therefore, need provide a kind of high stability, can set the Switching Power Supply that is used for driving big electric current laser diode of maximum operating currenbt.
[summary of the invention]
The Switching Power Supply that is used for the driving laser diode that the purpose of this invention is to provide a kind of high stability with protective circuit.
To achieve these goals, the present invention adopts following technical scheme:
A kind of Switching Power Supply that is used for the driving laser diode is provided, it comprises adjusting operating current multiturn potentiometer and the operating current amplifier that is connected, setting maximum current multiturn potentiometer that is connected and setting current amplifier, this operating current amplifier and setting current amplifier are connected to current value ratio than storbing gate, this current value ratio connects the output current controller than the output of storbing gate, and the output current controller connects laser by high-current power module.
Operating personnel can be provided with a current value by the setting maximum current multiturn potentiometer on the panel, the setting current amplifier is received in this output of setting the maximum current multiturn potentiometer, this setting current amplifier is an operational amplifier, the direct current of its output voltage and setting is directly proportional, the dynamic range of output can be set arbitrarily, for example 0 arrives+10V.Set current amplifier and be connected with the setting current detecting, then Shu Chu voltage shows that with a digital panel meter on the panel reading is demarcated into current value.
After the start, by the adjusting operating current multiturn potentiometer on the panel operating current is started from scratch and slowly to be increased to needed value, the operating current amplifier is received in the output of this adjusting operating current multiturn potentiometer, this operating current amplifier also is an operational amplifier, its output voltage and the working direct current that adjusts are directly proportional, the voltage dynamic range of output can be set arbitrarily, for example 0 arrives+10V.
The output of setting current amplifier and operating current amplifier is input to current value ratio simultaneously than storbing gate, and relatively gated current exports the output current controller to.When operating current＞setting electric current, relatively electric current is set in storbing gate output; When operating current＜setting electric current, storbing gate output services electric current relatively.So set current value is the lowest high-current value that this power supply may be exported when operation, also is the highest possible output current value behind the adjusting operating current multiturn potentiometer.The overcurrent output that it has prevented to cause owing to negligence of operation effectively.When output current value has reached the setting current value, the luminous warning of overcurrent indicator light, but do not cause self-locking to shut down.
This output current controller is a gate; under normal operation; if adopt the mode of operation of internal control; relatively the output voltage of storbing gate is delivered to power model to form corresponding output current; the output current controller is connected with the kinds of protect circuit; run into the situation that needs shutdown, this multichannel self-lock protection circuit sends the transmission that clearance order is come the blocking voltage signal to the output current controller.
This multichannel self-lock protection circuit has the Controlling Source that is attached thereto from three aspects:
First is the input of multichannel self-lock switch; laser uses mechanical switch as self-lock switch usually; for example be installed in door switch on the laser cover plate and temperature switch of cooler or the like; these switches have the ground wire of an end and power supply to link to each other, and the other end is received the disjunction gate input of the self-lock protection circuit in the power supply.Under normal circumstances, all self-lock switchs all should be in closure state, if there is any one to become open-circuit condition, all can make protective circuit produce clearance order.
Second is the emergency shutdown push button, and this push button is that a single-pole single-throw(SPST does not have the lock button, connects the output current controller, needs hard stop in emergency circumstances when running into, and only need click push button, and push button touches the emergency shutdown protective circuit and shuts down.
The 3rd is that zero current starts monitoring, is connected between output current controller and the operating current amplifier.For fear of sudden change heavy current impact laser tube, power requirement must be recalled to zero point to the potentiometer of regulating operating current earlier before each start.If potentiometer has adjusted back to zero point really, amplifier output is near the voltage of zero volt, and protective circuit will be checked this magnitude of voltage before start; if find that this voltage is higher; illustrate that potentiometer also do not recall to zero point, at this moment protective circuit is just blocked the open-minded of power supply always, then can't start shooting.
All protective circuits further connect the abort situation indicating device.Each indicator light of abort situation indicating device shows the position of causing self-locking to shut down respectively.
Be connected with internal control external control transducer between this output current controller and the high-current power module, this internal control external control transducer connects outer control interface.The output of output current controller is sent to internal control external control transducer and exports laser to through high-current power module again.This internal control external control transducer is a control model change-over circuit, it has two functions: first, switch internal control and external control signal by the control transformation switch on the panel, the internal control signal is from the potentiometer of the adjusting electric current on the panel, the external control signal will be imported from the signal outside the power supply by outer control interface, this external control signal can be from computer, also can be from circuit such as laser power FEEDBACK CONTROL; The second, for the amplitude of interface signal and the requirement of impedance, carry out parameter matching according to high-current power module, the specific requirement of conversion is according to the input characteristics decision of using module.
This high-current power module is a high-power switchgear power supply, because the power output of big electric current laser diode driver is very high, have only the high Switching Power Supply of the conversion efficiency of employing just can avoid producing a lot of heats, again because laser also has very high requirement to the stability and the evenness of output current, so also require the power factor height of module.
This high-current power module is connected with slow start circuit.This slow start circuit is a back off timer, and can set arbitrarily time of delay according to the requirement of laser, and it is received a control end of high-current power module, can realize the startup function slowly of power supply, avoids the heavy current impact laser tube.
In addition, pick out two groups of line branches from high-current power module and be clipped to output voltage monitoring and output current monitoring.On the plate two digital panel meters can be installed in front again, indicate the operating voltage and the electric current of the actual output of high-current power module respectively, the reading of ammeter is calibrated by the circuit sensitivity of regulating output voltage monitoring and output current monitoring when the machine of accent.Because the reading that this power supply can show simultaneously from three ammeters on the front panel shows operating state, helps to monitor more easily ruuning situation.
Compared with prior art, the present invention has following beneficial effect:
The Switching Power Supply that the present invention is used for the driving laser diode can be given arbitrarily and be put maximum operating currenbt; prevent because the overcurrent that careless manipulation produces; circuit is when misoperation; do not shut down ground automatic current limiting, and have and forces back the zero power energy, and can provide stable electric current to export; have High Power Factor and high power supply overall efficiency; reduce power consumption and power volume simultaneously, have and start slowly and the time-delay of starting shooting, guarantee effectively to suppress on the electric current and the of short duration transitional circuit in start back.
[description of drawings]
Fig. 1 is the structural representation of Switching Power Supply of the present invention;
Fig. 2 is the structural representation of current value ratio of the present invention than storbing gate;
Fig. 3 is a Switching Power Supply model machine front panel unit layout of the present invention;
Fig. 4 is Switching Power Supply model machine rear board component placement figure of the present invention;
Fig. 5 is the parts line graph of Switching Power Supply model machine of the present invention;
[embodiment]
Further specify the execution mode of concrete this creation below in conjunction with accompanying drawing.
Please refer to shown in Figure 1, a kind of Switching Power Supply that is used for the driving laser diode, it comprises adjusting operating current multiturn potentiometer 1 and the operating current amplifier 3 that is connected, setting maximum current multiturn potentiometer 2 that is connected and setting current amplifier 4, this operating current amplifier 3 and setting current amplifier 4 are connected to current value ratio than storbing gate 7, this current value ratio connects output current controller 11 than the output of storbing gate 7, output current controller 11 connects internal control external control transducer 13, and connects laser by high-current power module 15.
Wherein current value ratio than storbing gate 7 structures as shown in Figure 2, wherein CPR is a comparator, the size that compares operating current and setting electric current, the output of setting current amplifier and operating current amplifier is input to current value ratio simultaneously than storbing gate, and relatively gated current exports the output current controller to.Current value has been converted to magnitude of voltage U3 and the U4 that is directly proportional with it because set current amplifier and operating current amplifier, so CPR is actually the size of two magnitudes of voltage of comparison.
When operating current＞setting electric current, i.e. U3＞U4, comparator C PR exports high level, gun stocks INV output low level.
When operating current＜setting electric current, i.e. U3＜U4, comparator C PR output low level, gun stocks INV exports high level.
AS1 and AS2 are analog switches, and the output of two analog switches is connected together, and output voltage U 0 exports output current controller 11 to.When adding to analog switch high level control voltage, analog switch is in conducting state; Add low level and then be in off state.Therefore, when operating current＜setting electric current, the AS1 conducting, AS2 ends, and U0=U3 just outputs to the U0 end to the U3 that is directly proportional with the operating current size that adjusts; When operating current＞setting electric current, the AS2 conducting, AS1 ends, U0=U4, the magnitude of voltage U4 that output just is directly proportional with the setting size of current.At this moment, if continue to heighten operating voltage, output still be the original maximum of setting, unless operating current is transferred to less than setting current value, output voltage U 0 is just followed the tracks of U3 again.When power supply moved, AS1 and AS2 were one logical one disconnected forever.
Output current controller 11 is gates, and it is connected with multichannel self-lock protection circuit 10.Under the situation of normal operation, U0 voltage is delivered to internal control external control transducer, run into the situation that needs shutdown, this multichannel self-lock protection circuit 10 sends the transmission that clearance orders are come blocking voltage signal U0 to output current controller 11.Because the instruction that multichannel self-lock protection circuit 10 sends is a pulse signal sometimes, and the shutdown that needs really continues, so this gate need have " memory " function, this can adopt any electronic component with memory function to realize.
This multichannel self-lock protection circuit 10 and output current controller 11 have the Controlling Source that is attached thereto from three aspects, as shown in Figure 1:
First is that 9, the second of multichannel self-lock switch inputs are emergency shutdown push buttons 6, and this push button is that a single-pole single-throw(SPST does not have the lock button, connects output current controller 11, is installed in the eye-catching place of panel of power supply.Need hard stop in emergency circumstances when running into, only need click push button, push button touches multichannel self-lock protection circuit and shuts down.The 3rd is that zero current starts monitoring 5, is connected between output current controller 11 and the operating current amplifier 3.
See also Fig. 3～5, operating personnel can be provided with a current value by the setting maximum current multiturn potentiometer 2 on the panel, this output of setting maximum current multiturn potentiometer 2 is received and is set current amplifier 4, this setting current amplifier 4 is operational amplifiers, the direct current of its output voltage and setting is directly proportional, the dynamic range of output can be set arbitrarily, for example 0 arrives+10V.Set current amplifier 4 and be connected with setting current detecting 8, then Shu Chu voltage shows that with a digital panel meter on the panel reading is demarcated into current value.
After the start, by the adjusting operating current multiturn potentiometer 1 on the panel operating current is started from scratch and slowly to be increased to needed value, operating current amplifier 3 is received in the output of this adjusting operating current multiturn potentiometer 1, this operating current amplifier 3 also is an operational amplifier, its output voltage and the working direct current that adjusts are directly proportional, the voltage dynamic range of output can be set arbitrarily, for example 0 arrives+10V.
This multichannel self-lock protection circuit 10 further connects abort situation indicating device 12.Each indicator light of abort situation indicating device 12 shows the position of causing self-locking to shut down respectively.
This internal control external control transducer 13 connects outer control interface 14.This internal control external control transducer 13 is control model change-over circuits, it has two functions: first, switch internal control and external control signal by the control transformation switch on the panel, the internal control signal is from the potentiometer of the adjusting electric current on the panel, the external control signal will be imported from the signal outside the power supply by outer control interface, this external control signal can be from computer, also can be from circuit such as laser power FEEDBACK CONTROL; The second, for the amplitude of interface signal and the requirement of impedance, carry out parameter matching according to high-current power module 15, the specific requirement of conversion is according to the input characteristics decision of using module.
This high-current power module 15 is high-power switchgear power supplys, and it is connected with slow start circuit 16.This slow start circuit 16 is back off timers, and can set arbitrarily time of delay according to the requirement of laser, and it is received a control end of high-current power module, can realize the startup function slowly of power supply, avoids the heavy current impact laser tube.
In addition, pick out two groups of line branches from high-current power module 15 and be clipped to output voltage monitoring 17 and output current monitoring 18, indicate the operating voltage and the electric current of high-current power module 15 actual outputs respectively, the reading of ammeter is calibrated by the circuit sensitivity of regulating output voltage monitoring and output current monitoring when the machine of accent.Because the reading that this power supply can show simultaneously from three ammeters on the front panel shows operating state, helps to monitor more easily ruuning situation.
In the present embodiment, used 80A, the power model of 6V, remaining circuit is concentrated and has been contained on the printed circuit board, in the cabinet of packing into then.Between module, circuit board and the front and back panel, the winding displacement by the attachment plug seat is connected to each other.Through model machine operation test, reach performance index: power factor is greater than 0.98, and the current ripple coefficient is less than 0.5% of maximum output current, and is supreme towards electric current, the slow 0.5 second start delay time.
Being expressed as follows of each element code name among Fig. 3:
MM1 is three bit digital panel tables of setting electric current, and full scale is 99.9A, the lowest high-current value of indicative of settings;
MM2 is three bit digital panel tables of output current, and full scale is 99.9A, the current value of the actual output of indication power supply;
MM3 is three bit digital panel tables of output voltage, and full scale is 9.99V, the current value of the actual output of instructed voltage;
MP1 sets to regulate, 10K, and 10 circle potentiometers are used for setting maximum current;
MP2 is a Current Regulation, 10K, and 10 circle potentiometers are used for regulating operating current;
L0 is a power supply indicator;
L1 is self-locking 1, and first via self-locking alarm lamp is luminous behind first via self-lock switch open circuit;
L2 is self-locking 2, the second road self-locking alarm lamp, and is luminous behind the second road self-lock switch open circuit;
L3 is self-locking 3, and Third Road self-locking alarm lamp is luminous behind Third Road self-lock switch open circuit;
L4 is self-locking 4, the four road self-locking alarm lamps, and is luminous behind the four road self-lock switch open circuit;
L5 is the overcurrent indicator light, and it is luminous when setting current value that the operating current of adjusting reaches, and extinguishes after turning operating current down;
L6 suddenly stops indicator light, if promote urgent push button K2, this lamp is luminous;
K0 is the single-pole single-throw(SPST mains switch, 220V/5A;
K1 is internal control/external control single-pole double throw operating switch, is used to change the mode of operation of internal control/external control;
K2 suddenly stops push button, and hilted broadsword does not have the lock push-button switch, touches the back power supply and cuts off output current immediately;
CZ is the external control input.
Being expressed as follows of each element code name among Fig. 4:
HCZ0 exchanges input, the 10A supply socket of band fuse holder;
HCZ2 is the self-locking input, connects four groups of self-lock switchs;
HCZ4 is electric current output, the output D.C. high-current.
The above is preferred embodiment of the present invention only, and protection scope of the present invention is not limited thereto, and those of skill in the art are any to be included within protection range of the present invention based on non-material change on the technical solution of the present invention.
Claims (9)
1; a kind of Switching Power Supply that is used for the driving laser diode; it is characterized in that; it comprises adjusting operating current multiturn potentiometer (1) and the operating current amplifier (3) that is connected; setting maximum current multiturn potentiometer (2) that is connected and setting current amplifier (4); this operating current amplifier (3) and setting current amplifier (4) are connected to current value ratio than storbing gate (7); this current value ratio connects output current controller (11) than the output of storbing gate (7); output current controller (11) connects laser by high-current power module (15); this current controller (11) also connects multichannel self-lock protection circuit (10), and this multichannel self-lock protection circuit (10) sends clearance order to output current controller (11).
2, the Switching Power Supply that is used for the driving laser diode as claimed in claim 1 is characterized in that, is connected with zero current between this output current controller (11) and the operating current amplifier (3) and starts monitoring (5) Controlling Source.
3, the Switching Power Supply that is used for the driving laser diode as claimed in claim 2, it is characterized in that, be connected with internal control external control transducer (13) between this output current controller (11) and the high-current power module (15), the output of output current controller (11) is sent to internal control external control transducer (13) and passes through high-current power module (15) again and export laser to.
4, the Switching Power Supply that is used for the driving laser diode as claimed in claim 3 is characterized in that, this multichannel self-lock protection circuit (10) is connected with multichannel self-lock switch input (9) Controlling Source.
5, the Switching Power Supply that is used for the driving laser diode as claimed in claim 4 is characterized in that, this output current controller (11) is connected with emergency shutdown push button (6) Controlling Source.
6, the Switching Power Supply that is used for the driving laser diode as claimed in claim 5 is characterized in that, this multichannel self-lock protection circuit (10) further connects abort situation indicating device (12).
7, the Switching Power Supply that is used for the driving laser diode as claimed in claim 6 is characterized in that, this internal control external control transducer (13) connects outer control interface (14).
8, the Switching Power Supply that is used for the driving laser diode as claimed in claim 7 is characterized in that, this high-current power module (15) is connected with slow start circuit (16).
9, the Switching Power Supply that is used for the driving laser diode as claimed in claim 8 is characterized in that, this high-current power module (15) further is connected with output voltage monitoring (17) and output current monitoring (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100360657A CN100426604C (en) | 2006-06-23 | 2006-06-23 | Actuator power-supply for driving laser diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100360657A CN100426604C (en) | 2006-06-23 | 2006-06-23 | Actuator power-supply for driving laser diode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1897373A CN1897373A (en) | 2007-01-17 |
| CN100426604C true CN100426604C (en) | 2008-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100360657A Expired - Fee Related CN100426604C (en) | 2006-06-23 | 2006-06-23 | Actuator power-supply for driving laser diode |
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| Country | Link |
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| CN (1) | CN100426604C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102790606B (en) * | 2012-06-07 | 2015-11-18 | 杭州东城图像技术有限公司 | Numerically controlled analog modulation circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1211094A (en) * | 1997-09-09 | 1999-03-17 | 三菱电机株式会社 | Power source controller for laser diode |
| US5936986A (en) * | 1996-07-30 | 1999-08-10 | Bayer Corporation | Methods and apparatus for driving a laser diode |
| CN1523720A (en) * | 2003-02-18 | 2004-08-25 | ������������ʽ���� | High-frequency superposing module for driving laser diode |
| CN2922221Y (en) * | 2006-06-23 | 2007-07-11 | 广州工业发展集团有限公司 | Switching power supply used for driving laser diode |
-
2006
- 2006-06-23 CN CNB2006100360657A patent/CN100426604C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5936986A (en) * | 1996-07-30 | 1999-08-10 | Bayer Corporation | Methods and apparatus for driving a laser diode |
| CN1211094A (en) * | 1997-09-09 | 1999-03-17 | 三菱电机株式会社 | Power source controller for laser diode |
| CN1523720A (en) * | 2003-02-18 | 2004-08-25 | ������������ʽ���� | High-frequency superposing module for driving laser diode |
| CN2922221Y (en) * | 2006-06-23 | 2007-07-11 | 广州工业发展集团有限公司 | Switching power supply used for driving laser diode |
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| Publication number | Publication date |
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| CN1897373A (en) | 2007-01-17 |
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