列车管减压量检测装置的研制

Development of inspection device for pressure decrement of train brake pipe

介绍一种利用数字电路采样和保持压力基准的列车管减压量检测装置的设计思路,解决了压力基准的长时间保持问题。阐述了A/D转换电路的设计及模拟、数字混合电路的抗干扰措施。

A design idea of train brake pipe pressure decrement inspection device with sampling by digital circuit to keep the basicpressure is proposed. In the design, the problem to keep the pressure reference for a long time is solved. Design of A/D conversion circuit, aswell as the anti-interference measures of digital-analog hybrid circuits are stated.