Research and Implementation of an Explosion Acquisition and Synchronous Triggering System
In the explosion load,there exists triggering problem of building damage when multiple types and devices are detected at the same time.This paper presents a method when the outer layer of the enameled wire is melted instantaneously by explo-sion high temperature,so that the enameled wire is turned on and the falling edge pulse is generated,and the input output(IO)port of the micro controller unit(MCU)is interrupted to realize the explosion signal acquisition.The proposed method can be called as"double one"method which is combined to generate a fast synchronous trigger signal.Based on electro-static discharge(ESD)technology,the explosion signal and synchronous trigger signal are protected,and the suppression range is±25 kV.Based on the RS485 interface,the advanced encryption standard(AES)algorithm is used to process the communication data to improve the security of the system,realize remote control,and make the system suitable for a variety of occasions.According to the actual measurement,the explosion acquisition and synchronous trigger system has an explosion signal acquisition re-sponse time less than 0.7 μs,trigger delay less than 0.3 μs,and reliability more than 99％,which meets the needs of the pro-ject.
万方数据
维普
