CN113543399B - Pulse xenon lamp light source for realizing square wave characteristic output, control method and test system - Google Patents
Pulse xenon lamp light source for realizing square wave characteristic output, control method and test system Download PDFInfo
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- CN113543399B CN113543399B CN202111075082.2A CN202111075082A CN113543399B CN 113543399 B CN113543399 B CN 113543399B CN 202111075082 A CN202111075082 A CN 202111075082A CN 113543399 B CN113543399 B CN 113543399B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/36—Controlling
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/288—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
- H05B41/2881—Load circuits; Control thereof
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a pulse xenon lamp light source, a control method and a test system for realizing square wave characteristic output, wherein a multi-level pulse forming network is adopted for the pulse xenon lamp light source, each level of the pulse forming network respectively comprises a capacitor and an inductor with the same parameters, the capacitor and the inductor parameters of a single-level network are reasonably designed, and the characteristic impedance of the pulse xenon lamp light source is ensured to be consistent with the equivalent impedance of a designed xenon lamp tube, so that the light source output with good square wave characteristic is realized, the high-stability output of light intensity during discharging is ensured, the background illumination with consistent light intensity can be provided for application scenes such as high-speed photography and the like, the output characteristics of rising edges and falling edges are quicker, the energy use efficiency of a xenon lamp light source system can be greatly improved, the design energy of the xenon lamp light source is reduced, and the operation safety and reliability of the xenon lamp light source are effectively improved.
Description
Technical Field
The invention relates to the technical field of pulse xenon lamp light sources, in particular to a pulse xenon lamp light source for realizing square wave characteristic output, a control method and a test system.
Background
The pulse xenon lamp light source is used as a background illumination means for high-speed photographic diagnosis and research in detonation experiments, and has the advantages of high brightness, high efficiency, long service life and the like. Compared with the traditional explosive lighting light sources such as argon bombs and the like, the pulse xenon lamp light source has the following maximum advantages: firstly, different from the one-time illumination of explosive illumination, the pulse xenon lamp light source can carry out multiple and repeated pre-illumination before the experiment, so that ideal experiment data can be obtained in the detonation experiment through high-speed photographic diagnosis; and secondly, the pulse xenon lamp light source is a high-voltage heavy-current discharge driving xenon lamp to emit high-brightness flash, and after the high-brightness flash is used for replacing explosive for illumination, the safety protection level and the experiment pressure of the detonation experiment can be obviously reduced.
However, most of the conventional pulsed xenon lamp light sources adopt a technical route of outputting half sine wave current by topological discharge of an L-C circuit, and the defects of the conventional pulsed xenon lamp light sources are as follows: the method provides background illumination with inconsistent actual light intensity for high-speed photographic diagnosis, so that framing photographic presentation or bright or dark effects at different moments are caused, and interpretation and analysis of experimental data are not facilitated; secondly, the half sine wave output current has a longer time range in the rising and falling periods, the light intensity cannot meet the requirement of high-speed photography due to the lower amplitude value and cannot be utilized in practical application, and the energy use efficiency of the pulse xenon lamp light source is low.
Disclosure of Invention
The invention aims to solve the technical problems of poor high-speed photography effect and low actual energy use efficiency caused by inconsistent output light intensity during the discharge period of the existing pulse xenon lamp light source, and therefore, the invention provides the pulse xenon lamp light source, the control method and the test system for realizing square wave characteristic output.
The invention is realized by the following technical scheme:
a pulse xenon lamp light source for realizing square wave characteristic output comprises a remote control terminal, a high-voltage pulse power supply and a pulse xenon lamp load;
the high-voltage pulse power supply comprises two rectifying and boosting circuits, a trigger circuit, a high-voltage pulse loop and a pulse forming network; one of the rectification voltage-boosting circuits is connected to the input end of a high-voltage pulse loop, the input end of the high-voltage pulse loop is also connected with a trigger circuit, and the output end of the high-voltage pulse loop is connected to a pulse xenon lamp load; the other rectification booster circuit is connected to the input end of the pulse forming network, and the output end of the pulse forming network is connected to the pulse xenon lamp load;
the remote control terminal is connected with the two rectifying and boosting circuits, and respectively charges the energy storage capacitor in the high-voltage pulse loop and the energy storage capacitor in the pulse forming network through the two rectifying and boosting circuits;
meanwhile, the remote control terminal is connected with the trigger circuit through an optical fiber, a trigger signal sent by the remote control terminal is sent to the trigger circuit, a high-voltage pulse power supply is triggered to discharge to a pulse xenon lamp load, pre-ionization is formed on a xenon lamp tube, and a pulse forming network discharges to the pulse xenon lamp load to provide pulse discharge energy;
the pulsed xenon lamp load outputs a pulsed flash having square wave characteristics based on pre-ionization and pulsed discharge energy.
Further onSaid pulse forming network comprising
A plurality of pulse-forming network subunits connected in parallel,
(ii) a Each pulse forming network subunit comprises a group of capacitors and inductors which are connected in series, and the capacitance values and the inductance values in the pulse forming network subunits are the same.
Further, the high-voltage pulse loop is a pre-ionization power supply.
Furthermore, the remote control terminal carries out charging control on the pulse forming network through rotation regulation of a voltage regulator and through a rectification and voltage boosting circuit.
Further, the equivalent impedance of the pulse xenon lamp load and the characteristic impedance of the pulse forming network
The sizes are the same.
A control method for a pulse xenon lamp light source capable of realizing square wave characteristic output comprises the following steps:
two rectifying and boosting circuits in the high-voltage pulse power supply respectively acquire a charging instruction sent by a remote control terminal, and charge an energy storage capacitor in a high-voltage pulse loop based on the charging instruction received by each rectifying and boosting circuit, and charge an energy storage capacitor in a pulse forming network;
a trigger circuit in the high-voltage pulse power supply acquires a trigger signal sent by a remote control terminal through an optical fiber, and triggers a high-voltage switch in a high-voltage pulse loop, at the moment, the high-voltage pulse power supply discharges to a pulse xenon lamp load, and pre-ionization is formed on a xenon lamp tube; when the pulse xenon lamp load forms preionization, the pulse forming network discharges the pulse xenon lamp load and provides pulse discharge energy, so that the pulse xenon lamp load forms pulse flash output with square wave characteristics.
Further, the control method further includes:
according to the pulseCalculating working capacitance parameter required to be set in pulse forming network by actual working parameter of xenon lamp light source
And operating inductance parameter
(ii) a The actual working parameters comprise energy storage of a pulse xenon lamp light source
Operating voltage
And discharge pulse width
；
The specific calculation process is as follows:
in the formula:
is the pulse discharge energy of a pulse xenon lamp light source,
for the operating capacitance parameter of the pulse forming network,
for pulsed xenonThe operating voltage of the light source of the lamp,
is the discharge pulse width of the pulse xenon lamp light source,
for the parameters of the operational inductance of the pulse forming network,
the characteristic impedance of the network is formed for the pulse.
Further, the capacitance value of each pulse forming network subunit in the pulse forming network is determined by the number of stages set in the pulse forming network and the required working capacitance parameter, and the corresponding calculation formula is as follows:
wherein, in the step (A),
as a parameter of the operating capacitance, the capacitance,
for the number of stages set in the pulse forming network,
the size of the capacitance value of the pulse forming network subunit;
the inductance value of each pulse forming network subunit in the pulse forming network is determined by the stage number set in the pulse forming network and the required working inductance parameter, and the corresponding calculation formula is as follows:
wherein, in the step (A),
as a parameter of the inductance of the operation,
for the number of stages set in the pulse forming network,
the magnitude of the inductance of the network sub-unit is formed for the pulse.
A test system comprises a pulse signal generator, a current loop, a photoelectric probe, an oscilloscope and the pulse xenon lamp light source for realizing square wave characteristic output;
the current loop is arranged on a connecting cable between the high-voltage pulse power supply and the pulse xenon lamp load;
the pulse signal generator is respectively connected with a pulse xenon lamp light source for realizing square wave characteristic output and an oscilloscope, the pulse xenon lamp light source for realizing square wave characteristic output is triggered by outputting a trigger signal, and meanwhile, the trigger signal is connected to the oscilloscope for displaying;
the high-voltage pulse power supply generates discharge current on a pulse xenon lamp load through pulse discharge, and obtains a current signal through the current loop measurement and accesses the current signal to an oscilloscope for display;
the pulse xenon lamp load releases pulse flash and is collected through a photoelectric probe to form an optical signal which is connected to an oscilloscope for displaying;
and the oscilloscope is used for displaying the current signal and the optical signal so as to verify that the pulse xenon lamp light source is a pulse xenon lamp light source capable of outputting square wave characteristics.
The invention provides a pulse xenon lamp light source for realizing square wave characteristic output, a control method and a test system, by using a multi-stage pulse forming network each stage comprising a capacitor and an inductor respectively having the same parameters, and reasonably designing the parameters of capacitance and inductance of the single-stage network to ensure that the characteristic impedance is consistent with the designed equivalent impedance of the xenon lamp tube, thereby realizing the light source output with good square wave characteristics, not only ensuring the high stability output of the light intensity during the discharge period, further, background illumination with consistent light intensity is provided for application scenes such as high-speed photography, the output characteristics of rising and falling edges are fast, the energy use efficiency of a xenon lamp light source system can be greatly improved, the design energy of a xenon lamp light source is reduced, the operation safety and reliability of the xenon lamp light source are effectively improved, and the xenon lamp light source system is particularly suitable for application scenes such as high-speed photography background illumination in large detonation experiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic diagram of the overall structure of a pulsed xenon light source for achieving square wave characteristic output according to the present invention.
Fig. 2 is a circuit topology diagram of a multi-stage pulse forming network for realizing square wave characteristic output according to an embodiment of the present invention.
Fig. 3 is a diagram illustrating simulation results of the output of a pulsed xenon light source capable of achieving square wave characteristics according to an embodiment of the present invention.
Fig. 4 is a flowchart of a method for controlling a pulsed xenon light source to achieve square wave output according to the present invention.
Fig. 5 is a schematic diagram of a system for testing the pulsed xenon light source of fig. 1 with square wave output.
Fig. 6 is a diagram of the actual output current and light waveform of the pulsed xenon light source with square wave output according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
As shown in fig. 1, the present invention provides a pulsed xenon lamp light source for realizing square wave characteristic output, which includes a remote control terminal, a high-voltage pulsed power supply and a pulsed xenon lamp load.
The high-voltage pulse power supply comprises two rectifying and boosting circuits, a trigger circuit, a high-voltage pulse loop and a pulse forming network; one of the rectification booster circuits is connected to the input end of the high-voltage pulse loop and charges an energy storage capacitor in the high-voltage pulse loop; the input end of the high-voltage pulse loop is also connected with a trigger circuit for triggering the conduction of a high-voltage switch in the high-voltage pulse loop, the output end of the high-voltage pulse loop is connected to a pulse xenon lamp load, and when the high-voltage switch is triggered and conducted, the high-voltage pulse loop discharges to the pulse xenon lamp load, so that xenon in a xenon lamp tube forms preionization; the other rectification booster circuit is connected to the input end of the pulse forming network and charges an energy storage capacitor in the pulse forming network; the output end of the pulse forming network is connected to the pulse xenon lamp load, and when the pulse xenon lamp load forms pre-ionization, the energy of the pulse forming network is released to the pulse xenon lamp load to form pulse flash output with square wave characteristics.
The remote control terminal is connected with the two rectification and voltage boosting circuits, and the energy storage capacitors in the high-voltage pulse loop and the energy storage capacitors in the pulse forming network are charged through the two rectification and voltage boosting circuits respectively.
Meanwhile, the remote control terminal is connected with the trigger circuit through an optical fiber, a trigger signal sent by the remote control terminal is sent to the trigger circuit, the high-voltage pulse power supply is triggered to discharge to the pulse xenon lamp load, pre-ionization is formed on the xenon lamp tube, and the pulse forming network discharges to the pulse xenon lamp load to provide pulse discharge energy.
The pulsed xenon lamp load outputs a pulsed flash of light having square wave characteristics based on pre-ionization and pulsed discharge energy.
Specifically, the remote control terminal supplies power for the high-voltage pulse power supply by alternating current 220V after double isolation through the electromagnetic relay and the isolation transformer, and controls charging of the pulse forming network through rotation adjustment of the voltage regulator according to actual conditions. The 220V alternating current of the embodiment is rectified and boosted through the rectification and boosting circuit to obtain 15kV direct current which is transmitted to the high-voltage pulse loop and 0-1200V direct current which is transmitted to the pulse forming network. The high voltage pulse loop in this example is a pre-ionization power supply. Further, the voltage of the energy storage capacitor in the pulse forming network passes through the voltage divider, the voltage of the capacitor can be measured, and voltage feedback is carried out on the remote control terminal.
Further, as shown in FIG. 2The pulse forming network comprises
A plurality of pulse-forming network subunits connected in parallel,
(ii) a Each pulse forming network subunit comprises a group of capacitors and inductors which are connected in series, and the capacitance values and the inductance values in the pulse forming network subunits are the same. The pulse forming network further comprises a switch
And a pulsed xenon Lamp light source Lamp.
The number of stages of the pulse forming network is determined according to the requirement on the flat top characteristic of the square wave, and generally, the more the number of stages is, the better the square wave characteristic is. Considering the feasibility of practical operation, the present embodiment sets the number of stages of the pulse forming network to be between 5 and 10.
In order to realize good matching between the pulse forming network and the pulse xenon lamp light source, the equivalent impedance of the pulse xenon lamp load and the characteristic impedance of the pulse forming network are adoptedZThe size is the same to ensure the output of the pulse xenon lamp light source with good square wave characteristics. The pulse xenon lamp light source output with certain square wave characteristics as shown in figure 3 can be obtained by simulating through circuit software Pspice.
Example 2
As shown in fig. 4, the present embodiment provides a method for controlling a pulse xenon lamp light source according to the above-mentioned square wave characteristic output, which specifically includes the following steps:
s10: two rectifying and boosting circuits in the high-voltage pulse power supply respectively acquire a charging instruction sent by a remote control terminal, and charge an energy storage capacitor in a high-voltage pulse loop based on the respective received charging instruction, so as to charge the energy storage capacitor in a pulse forming network.
S20: a trigger circuit in the high-voltage pulse power supply acquires a trigger signal sent by a remote control terminal through an optical fiber, and triggers a high-voltage switch in a high-voltage pulse loop, at the moment, the high-voltage pulse power supply discharges to a pulse xenon lamp load, and pre-ionization is formed on a xenon lamp tube; when the pulse xenon lamp load forms preionization, the pulse forming network discharges the pulse xenon lamp load and provides pulse discharge energy, so that the pulse xenon lamp load forms pulse flash output with square wave characteristics.
Further, the control method further includes:
calculating the working capacitance parameter required to be set in the pulse forming network according to the actual working parameter of the pulse xenon lamp light source
And operating inductance parameter
(ii) a The actual operating parameters include stored energy of the pulsed xenon light source
Operating voltage
And discharge pulse width
；
The specific calculation process is as follows:
in the formula:
is the pulse discharge energy of a pulse xenon lamp light source,
for the operating capacitance parameter of the pulse forming network,
is the working voltage of the pulse xenon lamp light source,
is the discharge pulse width of the pulse xenon lamp light source,
for the parameters of the operational inductance of the pulse forming network,
the characteristic impedance of the network is formed for the pulse.
Furthermore, the capacitance value of each pulse forming network subunit in the pulse forming network is determined by the stage number set in the pulse forming network and the required working capacitance parameter, and the corresponding calculation formula is as follows:
wherein, in the step (A),
as a parameter of the operating capacitance, the capacitance,
for the number of stages set in the pulse forming network,
the size of the capacitance of the network sub-unit is formed for the pulse.
The inductance value of each pulse forming network subunit in the pulse forming network is determined by the series number set in the pulse forming network and the required working inductance parameter, and the corresponding calculation formula is as follows:
wherein, in the step (A),
as a parameter of the inductance of the operation,
for the number of stages set in the pulse forming network,
the magnitude of the inductance of the network sub-unit is formed for the pulse.
For ease of understanding, the present embodiment employs a 10-stage pulse forming network (i.e., comprising)
And the pulse forming network subunits are connected in parallel, the capacitance value of a single stage (namely each pulse forming network subunit) is 40 mu F, the inductance value of the single stage (namely each pulse forming network subunit) is 1.1 mu H, and the characteristic impedance of the designed pulse forming network is 0.17 omega. According to the principle of characteristic impedance matching, the discharge loop is considered to have a certain stray parameter (about 0.03 omega), and the designed xenon lamp equivalent impedance is 0.14 omega.
Example 3
As shown in fig. 5, the present embodiment provides a testing system, which includes a pulse signal generator, a current loop, a photoelectric probe, an oscilloscope, and a pulse xenon lamp light source for outputting based on the square wave characteristic; the current loop is arranged on a connecting cable between the high-voltage pulse power supply and the pulse xenon lamp load.
Specifically, the pulse signal generator is respectively connected with a pulse xenon lamp light source for realizing square wave characteristic output and the oscilloscope, the pulse xenon lamp light source for realizing the square wave characteristic output is triggered by outputting a trigger signal, and meanwhile, the trigger signal is connected to the oscilloscope for displaying. The high-voltage pulse power supply generates discharge current on a pulse xenon lamp load through pulse discharge, and obtains a current signal through current loop measurement and accesses the current signal to an oscilloscope for display. The pulse xenon lamp load releases pulse flash and is collected by the photoelectric probe to form an optical signal which is connected to the oscilloscope for displaying. The oscilloscope in the embodiment is used for displaying a current signal and an optical signal so as to verify that the pulse xenon lamp light source is a pulse xenon lamp light source capable of outputting square wave characteristics.
Specifically, the actual output current waveform and light waveform of the pulsed xenon light source are shown in fig. 6 through the test of the test system. As can be seen from FIG. 6, the pulsed xenon light source has a pulsed flat top current and light intensity waveform output of about 100 μ s.
The pulse xenon lamp light source for realizing the square wave characteristic output not only ensures the high-stability output of the light intensity during the discharge period, can provide the background illumination with consistent light intensity for application scenes such as high-speed photography and the like, has the rapid rising and falling edge output characteristics, can greatly improve the energy use efficiency of a xenon lamp light source system, reduces the design energy of the xenon lamp light source, and effectively improves the operation safety and reliability of the xenon lamp light source.
The above embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A pulse xenon lamp light source for realizing square wave characteristic output is characterized by comprising a remote control terminal, a high-voltage pulse power supply and a pulse xenon lamp load;
the high-voltage pulse power supply comprises two rectifying and boosting circuits, a trigger circuit, a high-voltage pulse loop and a pulse forming network; one of the rectification voltage-boosting circuits is connected to the input end of a high-voltage pulse loop, the input end of the high-voltage pulse loop is also connected with a trigger circuit, and the output end of the high-voltage pulse loop is connected to a pulse xenon lamp load; the other rectification booster circuit is connected to the input end of the pulse forming network, and the output end of the pulse forming network is connected to the pulse xenon lamp load; wherein the high-voltage pulse loop is a pre-ionization power supply;
the remote control terminal is connected with the two rectifying and boosting circuits, and respectively charges the energy storage capacitor in the high-voltage pulse loop and the energy storage capacitor in the pulse forming network through the two rectifying and boosting circuits;
meanwhile, the remote control terminal is connected with the trigger circuit through an optical fiber, a trigger signal sent by the remote control terminal is sent to the trigger circuit to trigger the high-voltage pulse loop to discharge to the pulse xenon lamp load, pre-ionization is formed on the xenon lamp tube, and a pulse forming network discharges to the pulse xenon lamp load to provide pulse discharge energy;
the pulsed xenon lamp load outputs a pulsed flash having square wave characteristics based on pre-ionization and pulsed discharge energy.
2. The pulsed xenon lamp light source capable of achieving square wave characteristic output according to claim 1, wherein the pulse forming network comprises n pulse forming network sub-units connected in parallel, 5 < n < 10; each pulse forming network subunit comprises a group of capacitors and inductors which are connected in series, and the capacitance values and the inductance values in the pulse forming network subunits are the same.
3. The xenon pulse lamp source of claim 1, wherein the remote control terminal is configured to control the charging of the pulse forming network via a rectification and boost circuit by rotation adjustment of a voltage regulator.
4. The xenon pulse lamp light source capable of outputting square wave characteristics as claimed in claim 1, wherein the equivalent impedance of the xenon pulse lamp load is the same as the characteristic impedance Z of the pulse forming network.
5. The control method of the pulse xenon lamp light source for realizing the square wave characteristic output according to any one of claims 1 to 4, characterized by comprising the following steps:
two rectifying and boosting circuits in the high-voltage pulse power supply respectively acquire a charging instruction sent by a remote control terminal, and charge an energy storage capacitor in a high-voltage pulse loop based on the charging instruction received by each rectifying and boosting circuit, and charge an energy storage capacitor in a pulse forming network;
a trigger circuit in the high-voltage pulse power supply acquires a trigger signal sent by a remote control terminal through an optical fiber, and triggers a high-voltage switch in a high-voltage pulse circuit, and at the moment, the high-voltage pulse circuit discharges to a pulse xenon lamp load to form preionization on a xenon lamp tube; when the pulse xenon lamp load forms pre-ionization, the pulse forming network discharges the pulse xenon lamp load and provides pulse discharge energy, so that the pulse xenon lamp load forms pulse flash output with square wave characteristics; the pulse forming network comprises n pulse forming network subunits which are connected in parallel, wherein n is more than 5 and less than 10; each pulse forming network subunit comprises a group of capacitors and inductors which are connected in series, and the capacitance values and the inductance values in the pulse forming network subunits are the same.
6. The method for controlling the pulsed xenon lamp light source capable of outputting square wave characteristics according to claim 5, further comprising:
calculating a working capacitance parameter C and a working inductance parameter L which need to be set in a pulse forming network according to the actual working parameters of the pulse xenon lamp light source; the actual working parameters comprise the energy storage E, the working voltage V and the discharge pulse width t of the pulse xenon lamp light sourcep；
The specific calculation process is as follows:
in the formula: e is the pulse discharge energy of the pulse xenon lamp light source, C is the working capacitance parameter of the pulse forming network, V is the working voltage of the pulse xenon lamp light source, tpThe pulse width of the pulse xenon lamp light source, L is the working inductance parameter of the pulse forming network, and Z is the characteristic impedance of the pulse forming network.
7. The method for controlling a pulsed xenon lamp light source with square wave output according to claim 6,
the capacitance value of each pulse forming network subunit in the pulse forming network is determined by the stage number set in the pulse forming network and the required working capacitance parameter, and the corresponding calculation formula is as follows: c ═ nC0Where C is the working capacitance parameter, n is the number of stages set in the pulse forming network, C0The size of the capacitance value of the pulse forming network subunit;
the inductance value of each pulse forming network subunit in the pulse forming network is determined by the stage number set in the pulse forming network and the required working inductance parameter, and the corresponding calculation formula is as follows: l ═ nL0Where L is the working inductance parameter, n is the number of stages set in the pulse forming network, L0The magnitude of the inductance of the network sub-unit is formed for the pulse.
8. A test system, which is characterized by comprising a pulse signal generator, a current loop, a photoelectric probe and an oscilloscope and a pulse xenon lamp light source for realizing square wave characteristic output based on any one of claims 1 to 3;
the current loop is arranged on a connecting cable between the high-voltage pulse power supply and the pulse xenon lamp load;
the pulse signal generator is respectively connected with a pulse xenon lamp light source for realizing square wave characteristic output and an oscilloscope, the pulse xenon lamp light source for realizing square wave characteristic output is triggered by outputting a trigger signal, and meanwhile, the trigger signal is connected to the oscilloscope for displaying;
the high-voltage pulse power supply generates discharge current on a pulse xenon lamp load through pulse discharge, and obtains a current signal through the current loop measurement and accesses the current signal to an oscilloscope for display;
the pulse xenon lamp load releases pulse flash and is collected through a photoelectric probe to form an optical signal which is connected to an oscilloscope for displaying;
and the oscilloscope is used for displaying the current signal and the optical signal so as to verify that the pulse xenon lamp light source is a pulse xenon lamp light source capable of outputting square wave characteristics.
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