A device and method for improving the reliability of high-power pulsed xenon lamp light source

Abstract

The invention discloses a device and method for improving the reliability of a high-power pulsed xenon lamp light source. The device adopts a dual solid-state discharge switch in which both the pre-ionization and the main discharge are high-voltage thyristor switch components, so as to avoid self-excitation of the switch and improve the high-power pulsed xenon lamp. The reliability and service life of the light source, and adopt the working mode of pre-ionization-then the main discharge. First, the pre-ionization current is detected and judged. When the pre-ionization is judged to be normal, the FPGA triggers the main discharge, and then detects the main discharge current. Judgment, judging that the actual output current of the main discharge is normal, the FPGA outputs the detonation signal as a synchronous trigger for the detonation device, and under the condition of pre-ionization or the output current of the main discharge is abnormal, the FPGA will not output the detonation signal, so as to realize the detection of the pulse xenon light source The functions of automatic detection of the working status, fault judgment and experiment suspension can improve the working stability and reliability of the pulsed xenon lamp light source, and provide important technical support for the smooth implementation of large-scale detonation experiments.

Description

Technical field [0001] The present invention relates to the field of pulsed xenon light source technology, and more particularly to devices and methods to improve the reliability of high power pulse xenon light source reliability. Background technique [0002] Pulse xenon light source as a background illumination method of high-speed photography diagnosis in the explosion experiment, with high brightness, high efficiency and long life. In large detonation experiments, the operation stability and reliability of the pulse xenon light source are critical. In some large-scale explosion experiments, depending on the physical needs and experimental layout, the high-power pulse xenon light source for dozens of high-power pulse xenon light source is required to use the working voltage, and the high-power pulse xenon light source for the pre-lighting type is high-speed photographic diagnosis. High background lighting. For the high-power pulse xenon light source of the above high voltage a...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the existing pulsed xenon lamp light source adopts an arc type discharge switch, which is prone to self-excitation phenomenon, and lacks timely feedback and judgment on the actual working state, which is not conducive to the stable and reliable operation of the pulsed xenon lamp light source. Therefore, the present invention The invention provides a device and method for improving the reliability of a high-power pulsed xenon lamp light source. It adopts a dual solid-state discharge switch in which both the pre-ionization and the main discharge are high-voltage thyristor switch components to avoid self-excitation of the switch. In the working mode of main discharge, the pre-ionization current is firstly detected and judged, and when the pre-ionization is judged to be normal (that is, the pre-ionization power threshold comparison circuit outputs a fiber signal with a light state), the FPGA triggers the main discharge, and then the main discharge current is checked. Detection and judgment, judging that the actual output current of the main discharge is normal (that is, the main discharge power threshold comparison circuit outputs an optical fiber signal with light), and the FPGA outputs the detonation signal as a synchronous trigger for the detonation device

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