基于CPLD的多路瞬态冲击信号存储测试系统设计

Design of Multiple Transient Impulse Signals Storage Measurement System Based on CPLD

摘要:

为了对水平碰撞、跌落等环境试验中的多路瞬态冲击信号进行测试,基于CPLD设计了多路瞬态冲击信号嵌入式存储测试系统;系统采用高速串行AD转换芯片作为数据采集的执行器件,实现了多路冲击信号的同步高速采集；利用铁电存储器对采集到的信号进行在线存储；设计了USB接口模块,实现了PC机与测试系统之间的通信,并在LABVIEW环境下设计了数据回读软件；经试验验证了测试系统的正确性和可靠性。

Abstract:

In this paper, a storage measurement system based on CPLD is designed to test the multi transient impulse signals in horizontal collision or drop test environment experiment. The system utilizes high-speed serial AD conversion chip as the implementation of the data collection device, which realized synchronization and high-speed data acquisition of multiple impulse signal. The collected signals were stored in an ferroelectric memory online. A USB interface module was design to realize the communication between the PC and test system, and the date recovery software is developed in LabVIEW environment. The experiment verified the correctness and reliability of the test system.