基于FPGA的多通道遥测采编器设计

Design of multi-channel telemetry collector based on FPGA

针对某模型弹遥测数据的采集,设计了一种多通道遥测采编器。采用FPGA作为逻辑控制器,提出了一种模拟开关级联模式采集电路,实现了40路传感器信号的数据采集,并对采集的数据统一编帧存储到存储器中。对采集电路中出现的震荡现象做出分析并提出了解决方案,给出了多路混合数据编帧方法和采集控制时序。试验结果表明:该采编器性能可靠,采集精度高,并具有很好的通用性。

A multi-channel telemetry collector is designed to meet telemetering data acquisition of a mock bomb.Use FPGA as logic controller,propose an acquisition circuit based on analog switches cascade mode,it achieves data acquisition of 40 channels sensor signals and the collected data is compiled in form of frame and stored in memory. Analyze oscillation phenomenon appeared in acquisition circuit and propose solution,give method for multi-channel data frame-editing and acquisition and control timing. Experimental results show that property of the collector is reliable,acquisition precision is high and has good universality.