A kind of the pulse xenon lamp power source system and operating method of band triggering pre-burning deviceTechnical field
The present invention relates to Pulse Power Techniques and laser technology crossing domain, and in particular to a kind of band triggering pre-burning devicePulse xenon lamp power source system and operating method, can be applied to laser amplifier.
Background technology
Xenon flash lamp is a kind of device converting electric energy to radiation energy by pulsed discharge form, and storage is on the capacitorEnergy can be discharged in the form of gas discharge by xenon lamp fluorescent tube within the very short time, while high temperature is established in lampPlasma, and generate the radiation of high brightness.Since it is strong with load capacity, the laser light velocity is high-quality and pumping efficiency is highThe advantages that, often it is widely used in the pumping source of solid state laser.
Currently, there are mainly two types of the domestic and international methods in relation to making pulse xenon lamp power source：One is using high pressure triggering knotClose the technical solution of capacitive energy storage electric discharge；Second is that the technical solution discharged using preionization combination capacitor energy storage.And this two classAll there is corresponding defect in the prior art, wherein the first scheme xenon flash lamp in use has easily explosion and short life, steadyThe shortcomings of qualitative poor, anti-interference is poor；Second scheme it is complicated, and between pulse and pulse optics export stability compared withThe shortcomings of poor.
Invention content
In order to overcome defect existing for above-mentioned pulse xenon lamp power source in the prior art, it is pre- that the present invention provides a kind of band triggeringThe xenon lamp power supply system of device is fired, system that employs the triggering pre-burning schemes based on magnetic switch mode, can extend the xenon lamp longevityLife reduces electromagnetic interference, improves the optical stability between pulse and pulse, while can monitor the work of xenon lamp and system in timeState.
The technical solution adopted by the present invention is as follows：
A kind of pulse xenon lamp power source system of band triggering pre-burning device, which includes master controller M1, DC power supply branchRoad, protection branch of releasing, pulse shaping branch, triggering pre-burning branch, discharge switch pipe driving branch, data acquisition branch, xenonLamp load X1；The output end and DC power supply branch of master controller M1 protect branch of releasing, pulse shaping branch, triggering pre-burningEach input terminal of branch is connected, and the input terminal of master controller M1 is connected with the output end of data acquisition branch.
Further, the DC power supply branch is used to generate DC charging current according to control signal；The guarantor that releasesConnection and interruption of the shield branch for releasing to circuit energy storage energy control；The pulse shaping branch is for generating pulseSignal is supplied to system load；Data acquisition branch is for the current data in acquisition circuit, and by the electric current number of acquisitionAccording to feeding back to master controller M1；The triggering pre-burning branch is used to provide pre-burning electric current according to trigger signal to xenon lamp X1'sState is detected.
Further, the DC current branch includes charging control unit M2, DC charging motor DC, charging control unitM2 is connected with the control terminal of DC charging motor DC, to control the start and stop of DC charging motor DC；
The protection branch of releasing includes releasing control unit M3, the switch K1 that releases, bleeder resistance R2, control unit of releasing M3 andThe control terminal of switch K1 of releasing is connected, and by releasing, control unit M3 controls the opening and closing for the switch K1 that releases；
The data acquisition branch includes data acquisition unit M5, Hall current ring I1, sampling resistor, M5 points of data acquisition unitThe voltage value on the current value and sampling resistor of Hall current ring I1 Cai Ji not passed through；
The pulse shaping branch includes discharge switch driving M4, storage capacitor C1, discharge switch pipe K2, harmonic inductance L1, passesTransmission cable T1；
The triggering pre-burning branch includes pre-burning unit M6, trigger element M7 and magnetic switch L2；The pre-burning unit M6 is to useIn the circuit unit for providing DC current；The trigger element M7 is high-voltage triggering circuit or high pressure trigger element, is used for basisThe trigger signal of master controller M1 generates the trigger pulse of certain pulsewidth, certain amplitude, and is supplied to the primary side of magnetic switch L2, makesObtain the high-voltage pulse of the one level pressure value of secondary side boosting of magnetic switch L2.
Further, when the switch K1 that releases is in normally off, bleeder resistance R2, protective resistance R3, protection diodeD2 is connected, and constitutes bleed-off circuit with storage capacitor C1；
When releasing, switch K1 is off down, and DC charging motor DC is connect with storage capacitor C1, charging control unit M2 controlsDC charging motor DC processed charges to storage capacitor C1；
After storage capacitor C1 is fully charged, discharge switch driving unit M4 is to generate the driving that discharge switch pipe K2 can be made to be connectedThe circuit unit of signal, after discharge switch pipe K2 is connected, energy storage energy on storage capacitor C1 pass through successively harmonic inductance L1,It is exported after transmission cable T1；
The ground connection output end of transmission cable T1 is attached across Hall current ring I1, and Hall current ring I1 and data acquisition unit M5It is connected, thus the acquisition electric current of Hall current ring I1 is transmitted to data acquisition unit M5.
Further, data acquisition unit M5 is using modulus conversion chip AD574 as the signal-data processing of core devicesCircuit unit, charging control unit M2 are to generate the control circuit unit that chip SG3525 is constituted, control unit of releasing M3 by PWMFor the circuit unit being made of relay, Hall current ring I1 is Rogowsi coils；Pre-burning unit 6 is for DC current source or directlyFlow current generating circuit；Trigger element M7 is the high-tension circuit unit for generating trigger pulse.
On the other hand the present invention provides the xenon flash lamps that either strap in a kind of 1-5 based on claim triggers pre-burning deviceThe operating method of power-supply system, the operating method include the following steps：
Step S1, system initialization carry out initialization operation to master controller M1 and each control unit first, and set direct current and fillCharging voltage setting value, the pre-burning unit M6 output current setting values of motor DC；
Step S2, starting triggering pre-burning branch makes xenon lamp X1 enter pre-burning lower state；
Step S3 judges the state of xenon lamp according to the information of data acquisition unit M5 acquisitions, judges whether xenon lamp is in normal workMake state；
Step S4 starts charging paths, the normally closed switch K1 that releases for protection branch of releasing is disconnected, and start constant-current chargeMachine DC charges to storage capacitor C1；
Step S5 passes through discharge switch driving unit M3 when monitoring that the charging voltage on storage capacitor C1 reaches setting valueDischarge switch pipe K2 is connected in control, then the energy on storage capacitor C1 discharges via pulse shaping circuit and is transmitted to xenon lamp X1On；
Step S6, the electric current of xenon lamp X1 outputs after Hall current ring I1 through data acquisition unit M5 by acquiring and feeding back to master controlDevice M1 processed carries out interpretation, and the discharge current waveform that master controller M1 is acquired according to data acquisition unit M5 is to whole system circuitOperating status is judged and is monitored, and prompt is detected system when system occurs abnormal.
Further, the startup triggering pre-burning branch is to send pre-burning signal by master controller M1 to make pre-burning unit M6It starts to work, after certain time is delayed, then mono- trigger signal of trigger element M7, trigger element M7 is given to receive trigger signalStart to start afterwards and provide high tension voltage to magnetic switch L2 to generate high pressure on the secondary side of magnetic switch L2, then makes xenon lamp X1Impedance drastically reduce, while pre-burning unit M6 provides a maintenance electric current, the electric current energy to magnetic switch L2 and xenon flash lamp X1Enough it is saturated magnetic switch L2, xenon lamp X1 enters pre-burning stable state at this time.
Further, after starting triggering pre-burning circuit, data acquisition unit M5 starts to carry out the output current of xenon lampAcquisition, and the acquisition current data is sent to master controller M1 and is monitored, when the acquisition electric current meets a preset conditionIllustrate that xenon lamp is normal operating conditions at this time, then continues step S4, then illustrate when the acquisition electric current is unsatisfactory for the preset conditionXenon lamp is abnormal condition, needs disconnecting circuit and checks xenon lamp；
Further, starting before constant current charger DC charged, needing to first pass through control unit M3 disconnections of releasing and release outK1 is closed, constant current charger DC is connected to storage capacitor C1 at this time constitutes charge circuit, starts persistently to fill storage capacitor C1Electricity.
Specially master controller M1 by discharge switch driving unit M3 send out discharge signal make switching tube K2 be connected after, storageIt is put to xenon lamp X1 on magnetic switch L2 pairs side and cable T1 of the energy stored on energy capacitor C1 after harmonic inductance L1, saturationElectricity.
Further, which further includes step S7, judges whether there is repetition, if then return to step S4 and repetitionThe charging and discharging process of power-supply system, if otherwise terminating the secondary operation.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1, provided by the invention using the technical solution with triggering pre-burning device compared with traditional charging method, can effectively it prolongThe long xenon lamp service life keeps the stability of xenon lamp work；
2, technical solution provided by the invention is uncomplicated, and the interference of electromagnetism in circuit can be reduced, improve pulse and pulse by havingBetween optical stability the advantages that.
3, technical solution provided by the invention can monitor the working condition of xenon lamp in real time, in time to the working condition of xenon lampIt is fed back, there is important application in pulse power application field.
Description of the drawings
Fig. 1 is the pulse xenon lamp power source system structure diagram that band provided by the invention triggers pre-burning system.
Fig. 2 is the operational flowchart of system described in Fig. 1.
Fig. 3 is the trigger voltage oscillogram of system described in Fig. 1.
Fig. 4 is the charging voltage oscillogram of system described in Fig. 1.
Fig. 5 is the discharge current waveform figure of system described in Fig. 1.
Each symbol description is as follows in figure：DC- DC charging motors；R1- current-limiting resistances；D1, D2- high voltage protection diodes；R2-Bleeder resistance；R3- protective resistances；K1- releases switch；C1- energy-storage capacitors；R4, R5- divider resistance；K2- discharge switch pipes；L1- harmonic inductance；I1- Hall current rings；L2- magnetic switches；T1- transmission cables；X1- xenon lamps load；M1- master controllers；M2- fillsElectric control unit；M3- releases control unit；M4- discharge switches drive；M5- data acquisition units；M6- pre-burning units；M7- is touchedBill member.
Specific implementation mode
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present inventionEmbodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, allBelong to the scope of protection of the invention.
Embodiment 1
Embodiment 1 is the pulse xenon lamp power source system that a kind of band as shown in Figure 1 triggers pre-burning device, which includes totalController M1, DC power supply branch, protection branch of releasing, pulse shaping branch, triggering pre-burning branch, discharge switch pipe driving branchRoad, data acquisition branch, xenon lamp load X1；
The wherein output end of master controller M1 and DC power supply branch, protection is released branch, pulse shaping branch, triggering pre-burning branchEach input terminal on road is connected, and the input terminal of master controller M1 is connected with the output end of data acquisition branch；
The DC power supply branch is used to generate DC charging current according to control signal；The DC current branch route charge controlUnit M2, DC charging motor DC, current-limiting resistance R1 and high voltage protection diodes D1 compositions, charging control unit M2 and DC chargingThe control terminal of machine DC is connected, to control the start and stop of DC charging motor DC；In one embodiment, charging control unit M2 be byPWM generates the control circuit unit that chip SG3525 is constituted.
The connection and interruption of the protection branch for releasing to circuit energy storage energy of releasing controls, by control of releasingUnit M3, the switch K1 that releases, bleeder resistance R2, protective resistance R3, protection diode D2 composition, control unit of releasing M3 with releaseThe control terminal of switch K1 is connected, and by releasing, control unit M3 controls the opening and closing for the switch K1 that releases；Implement at oneIn example, control unit of releasing M3 is the circuit unit being made of relay.
The pulse shaping branch is supplied to system load for generating pulse signal, which route discharge switch drivingM4, storage capacitor C1, discharge switch pipe K2, harmonic inductance L1, transmission cable T1 compositions；
When the switch K1 that releases is in normally off, bleeder resistance R2, protective resistance R3, protection diode D2 are connected, and withStorage capacitor C1 constitutes bleed-off circuit, and when releasing, switch K1 is off down, and DC charging motor DC connects with storage capacitor C1It connects, charging control unit M2 controls DC charging motor DC charges to storage capacitor C1；After storage capacitor C1 is fully charged, putElectric switch driving unit M4 is the circuit unit for generating the drive signal that discharge switch pipe K2 can be made to be connected, when discharge switch pipeAfter K2 conductings, the energy storage energy on storage capacitor C1 exports after harmonic inductance L1, transmission cable T1 successively；
The current data of acquisition is fed back to master controller by the data acquisition branch for the current data in acquisition circuitM1, the branch route data acquisition unit M5, Hall current ring I1, sampling resistor R4 and R5 composition；In one embodiment, dataCollecting unit M5 is using modulus conversion chip AD574 as the signal-data processing circuit unit of core devices；Energy-storage capacitor C1For metallization film capacitor, discharge switch pipe K2 is solid switch either ignitron or gas switch；The xenon flash lamp X1High-pressure side be connected to the core wire of long distance transmission cable T1；Low-pressure end is connected to the common ground connection of power supply by cable shieldPoint.
Hall current ring I1 is Rogowsi coils in one embodiment, and the present invention program does not limit this；
Wherein the ground connection output end of transmission cable T1 is attached across Hall current ring I1, and Hall current ring I1 and data acquisition are singleFirst M5 is connected, thus the acquisition electric current of Hall current ring I1 can be transmitted to data acquisition unit M5.
The triggering pre-burning branch is used to provide pre-burning electric current according to trigger signal and be examined to the state to xenon lamp X1It surveys, which route pre-burning unit M6, trigger element M7 and magnetic switch L2 compositions；The pre-burning unit M6 be forThe circuit unit of DC current is provided, the pre-burning unit 6 is DC current source in one embodiment, in another embodimentMiddle pre-burning unit 6 is DC current generation circuit；The trigger element M7 is high-voltage triggering circuit or high pressure trigger element, is used forPulsewidth is generated according to the trigger signal of master controller M1 and is the trigger pulse of 5 μ s amplitudes 310V, and is supplied to the original of magnetic switch L2Side so that the high-voltage pulse that the secondary side boosting of magnetic switch L2 is 12kV；Trigger element M7 is to include generation in one embodimentThe circuit unit of above-mentioned trigger pulse.
Embodiment 2
Embodiment 2 is a kind of use operating method for the pulse xenon lamp power source system that band triggers pre-burning device, which canTo be the power-supply system in any embodiment in embodiment 1, which includes the following steps：
Step S1, system initialization carry out initialization operation to master controller M1 and each control unit first, and set direct current and fillThe charging voltage setting value of motor DC, pre-burning unit M6 setting charging current values；
Step S2, starting triggering pre-burning branch makes xenon lamp X1 enter pre-burning lower state；
The startup triggering pre-burning branch is to send pre-burning signal by master controller M1 pre-burning unit M6 is made to start to work, and is passed throughAfter certain time delay, then start to start simultaneously after giving mono- trigger signal of trigger element M7, trigger element M7 to receive trigger signalThere is provided high tension voltage to magnetic switch L2 to generate high pressure on the secondary side of magnetic switch L2, the high pressure will be added in xenon lamp both ends so thatXenon lamp build-up of luminance then drastically reduces the impedance of xenon lamp X1, while pre-burning unit M6 will provide one hundred milliamperes for xenon flash lampMaintenance electric current, the electric current can make magnetic switch L2 be saturated, xenon lamp X1 enters pre-burning stable state at this time；
It should be noted that magnetic switch L2 is saturable transformer, secondary inductance value is larger before being saturated, and is equivalent to switch and disconnects；Secondary inductance value drastically declines after saturation, is equivalent to switch conduction；
Step S3 judges the state of xenon lamp according to the information of data acquisition unit M5 acquisitions, judges whether xenon lamp is in normal workMake state；
After starting triggering pre-burning circuit, data acquisition unit M5 starts to be acquired the output current of xenon lamp, and this is adoptedCurrent collection flow data is sent to master controller M1 and is monitored, and when the acquisition electric current meets a preset condition, xenon lamp is explanation at this timeNormal operating conditions then continues step S4, then illustrates that xenon lamp is improper shape when the acquisition electric current is unsatisfactory for the preset conditionState needs disconnecting circuit and checks xenon lamp；
The preset condition is a preset threshold value or threshold range, or acquisition electric current certain in one embodimentIt is maintained in duration in a threshold range, the present invention does not limit this, can realize the judgement based on the electric currentAs a result the state of xenon lamp is detected；
Step S4 starts charging paths, the normally closed switch K1 that releases for protection branch of releasing is disconnected, and start constant-current chargeMachine DC charges to storage capacitor C1；
Starting before constant current charger DC charged, is needing to first pass through control unit M3 disconnections of releasing and release switch K1, at this timeConstant current charger DC is connected to storage capacitor C1 constitutes charge circuit, starts to carry out continuing charging to storage capacitor C1.
Step S5 is driven single when monitoring that the charging voltage on storage capacitor C1 reaches setting value by discharge switchDischarge switch pipe K2 is connected in first M3 controls, then the energy on storage capacitor C1 discharges via pulse shaping circuit and is transmitted to xenon lampOn X1, specially master controller M1 by discharge switch driving unit M3 send out discharge signal make switching tube K2 be connected after, energy storageIt is put to xenon lamp X1 on magnetic switch L2 pairs side and cable T1 of the energy stored on capacitor C1 after harmonic inductance L1, saturationElectricity.
Step S6, the electric current of xenon lamp X1 outputs is by acquiring and feeding back to through data acquisition unit M5 after Hall current ring I1Master controller M1 carries out interpretation, and the discharge current waveform that master controller M1 is acquired according to data acquisition unit M5 is to whole system electricityThe operating status on road is judged and is monitored, and prompt is detected system when system occurs abnormal；
In system normal operation, the discharge current waveform of the acquisition meets certain rule, when the discharge current wave of the acquisitionWhen shape is unsatisfactory for certain rule or condition, illustrate that loading xenon lamp X1 exception occurs.
In addition, the operating method can also include step S7, repetition is judged whether there is, if then return to step S4 and repetitionThe charging and discharging process of power-supply system, if otherwise terminating the secondary operation.
Embodiment 3：
In the present embodiment, it is the operation using operating method and circuit to pulse xenon lamp power source system based on physical circuitFlow is illustrated, and the pulse xenon lamp power source system is consistent with the power-supply system in aforementioned any embodiment, energy storageThe capacity of capacitor C1 is 350 μ F, and the inductance value of harmonic inductance L1 is 90 μ F, and discharge switch pipe K2 uses thyristor, magnetic switchInductance value 7mH before the saturation of L2 pairs side, 20 μ F after saturation, cable T1 use coaxial cable.
Physical circuit running is as follows：
First, initialization operation, the continuous current output of setting direct current generator DC are carried out to master controller M1 and each control unitFor 200mA, sets its charging and set threshold voltage as 3kV, set pre-burning module constant current output 150mA.Then, pass through master controllerM1 send out pre-burning signal make pre-burning unit M6 start to work and output current pass through master controller after certain time is delayedM1 gives trigger element M7 mono- trigger signal, and trigger element M7 starts to start and export high tension voltage, on the secondary side of magnetic switch L2High tension voltage as shown in Figure 3 is generated, the impedance of xenon lamp X1 at this time drastically reduces, and then pre-burning unit M6 will be xenon flash lamp X1The maintenance electric current of 150mA is provided, which can be such that magnetic switch L2 is saturated, and inductance value is reduced to 20 μ F by 7mH；When data acquireWhen unit M5 detects the maintenance electric current of xenon lamp output, master controller M1 sends out charging instruction and gives charging control unit M2, chargingControl unit M2 control DC charging motors DC is that energy-storage capacitor C1 carries out constant-current charge, when the voltage on energy-storage capacitor C1 reachesTo charging is stopped when 3kV, the charging voltage waveform is as shown in Figure 4；Master controller M1 is sent out by discharge switch driving unit M4Electric discharge instruction makes discharge switch pipe K2 be connected, and the energy stored on energy-storage capacitor C1 passes through the magnetic after harmonic inductance L1, saturationSwitch L2 pairs side and cable T1 discharge to xenon lamp X1, the discharge currents of xenon lamp X1 outputs by after Hall current ring I1 through dataCollecting unit M5 feeds back to master controller M1 and carries out interpretation, and the discharge current waveform is as shown in Figure 5.Master controller M1 is put according to thisWhether electric current, which meets certain rule, is judged and is monitored whether normal operation to xenon lamp in power-supply system.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrappedContaining an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art shouldIt considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the artThe other embodiment being appreciated that.
The invention is not limited in specific implementation modes above-mentioned.The present invention, which expands to, any in the present specification to be disclosedNew feature or any new combination, and disclose any new method or process the step of or any new combination.