基于MMA7260和μPD78F0547的水泵振动信号采集器

Acquisition and processing of vibration signal based on mma7260 and μPD78F0547

基于单片机μPD78F0547和加速度传感器MMA7260的水泵振动信号采集器的设计。该振动信号采集器可以实现对水泵振动信号的实时采集,并能通过RS232接口将振动数据传送到上位机,具有高灵敏度、高速、低成本、方便和实用等优点。以水泵正常运行和发生支座松动、不对中故障为例,进行水泵振动信号采集与小波消噪处理实验。实验表明该振动信号采集器可以很好地获取水泵各种工况下的振动信号。

This paper designed an instrument of acquiring vibration signal based on MMA7260 and μPD0547. This instrument can acquire vibration signal in real time and transmit the vibration data to host computer through the RS232 interface. It has the advantage of high sensitivity, high-speed, low-cost, convenience and practicability. At last, we made an experiment on acquisition of pump vibration signal and wavelet de-noising when the pump is well in operation, imbalance and pedestal looseness. The experiment results show that the instrument is effective in acquiring vibration signal of water pump