Design Of Pulsed Xenon Lamp Discharge Monitoring System Based On Wi-Fi

In the study of inertial confinement fusion,a target experiment is needed,that is,a multi-channel high-energy laser beam is obtained by discharging a pulsed xenon lamp at all levels of the main amplifier for irradiating the target sphere of the deuterium-to-tritium target.Experiments are accompanied by the risk of existence,the main laser amplifier expensive,an experimental cost of expensive.In order to improve the quality and success rate of target shooting and monitor the discharge process of pulsed xenon lamp,it has great practical significance to develop a high-performance pulsed xenon lamp discharge monitoring system.In this paper,aiming at the shortages of traditional monitor,such as less number of monitoring channels,complicated wiring and not easy to extend,poor portability,a set of design scheme of pulse xenon lamp discharge monitoring system based on Wi-Fi is proposed.Combined with the basic theory of synchronous data acquisition and signal integrity,a ten-channel 16-bit ADC with serial output interface was designed to design a ten-channel synchronous data monitor with an independent sampling rate of 1MHz.The whole system adopts ‘FPGA+ARM+Wi-Fi’ as the core of the overall design,research and development of a PC-based monitoring center,composed of multiple monitors monitoring system to achieve a few hundred road pulse xenon lamp discharge channel synchronization data acquisition and monitoring.The problem of many discharge channels in the target experiment is solved by the common networking of multiple monitors and the synchronous triggering.In view of the shortcomings of traditional wired transmission methods that the wiring is not easy to maintain,the Lw IP protocol and the Wi-Fi protocol stack are transplanted.Wi-Fi wireless transmission mode,both for easy networking and does not affect the transmission rate,and mobile portability;through the single-chip FPGA design and implementation of each monitor ten channels of sampling control,storage and transmission capabilities to complete the ten series of serial data Stream conversion,time-multiplexed way to temporarily store the data in an external SRAM;magnetic field strength and high sampling accuracy requirements for the field environment,the use of magnetic coupling isolation circuit to increase the anti-jamming of the monitor;Using ARM processor control Wi-Fi interface and timely read data through the FPGA,and upload data to the host computer.The Lab VIEW software is used to design the supervisory function of the host computer to realize the functions of controlling and monitoring the Wi-Fi connection,receiving,storing and displaying the discharge waveform data.After the laboratory and field verification,the monitoring system can be simultaneously on the hundreds of road pulse xenon lamp discharge signal to effectively monitor,It achieves the combination of wireless communication network and synchronous data acquisition system,weak electricity system monitoring of strong electricity system and has good mobile portability.