一种表面压力数据记录器的设计与实现

摘要

介绍了一种基于FPGA的多路差分信号数据记录器.表面压力传感器输出的差分信号经仪表放大器AD623放大后经ADC转换成数字信号.由FPGA作为主控制器并最终将数据存储到FLASH芯片中.该数据记录器分多个记录区,可连续多次试验.记录器采用锂电池供电,功耗低,可靠性高.%An FPGA-based multi-channel difference signal data recorder was introduced.The difference signal that the surface pressure sensor outputs was amplified by the instrumentation amplifier AD623 and then conversed into a digital signal by ADC. The FPGA as the main controler records the date into FLASH chip. The recorder was devided into multi sections in order to collect data more times in succession.The recorder was powered by lithium batteries, low cost and high reliability.