一种加速度信号隔离分路装置的设计

摘要

The accelerometers have been applied in many fields ,such as fault diagnosis ,vibration test .Sometimes man-y data acquisition devices will collect the same accelerometer signal simultaneously .Thus two problems will arise .One is power supply conflict ,the other is signal interference .For this reason ,an insulation splitter device for accelerometer signal is designed in this paper .This device splits signal into two paths which are isolated :one is master path ,the other is seconda-ry path .The data acquisition device related with master path powers accelerometers ,at the same time ,the accelerometer sig-nal will be transferred by lossless isolated way .Thus the conflict of two paths is avoided .As a result ,the problem that many data acquisition devices collect the same accelerometer signal simultaneously is solved satisfactorily .%加速度传感器广泛应用于故障诊断、振动测试等领域，但有时需要多个数据采集设备同时采集同一个恒流供电的加速度传感器的信号，此时会产生两方面的问题：一方面多个数据采集设备可能同时对外供电造成冲突，另一方面多个数据采集设备并联采集同一个加速度传感器信号存在信号串扰问题。为此，论文设计了一种加速度信号隔离分路装置，将信号分为主、副两路并物理隔离，接入主路的数据采集装置提供加速度传感器的电源，接入副路的数据采集装置的电源及信号被物理隔离，同时实现加速度信号的无损隔离传输，有效避免两路信号相互串扰，从而较好地解决了多个数据采集设备同时采集一路加速度传感器信号的难题。