Design and realization of vibration signal acquisition & analysis system based on STM32

Efficient acquisition of vibration signal information is key to the bearing fault diagnosis, a design scheme is hereby proposed for bearing vibration signal acquisition & analysis system based on STM32 in this paper. This system comprised a sensor to obtain vibration signal data, which were transmitted to STM32 micro-controller after A/D conversion, then STM32 controled WI-FI module to transfer these data to PC. Afterwards, Empirical Mode decomposition (EMD) was adopted to analyze and process the vibration data to perform a remote monitoring on the running state of the rolling bearing. The experiment results have shown that the system proposed in this paper is capable of collecting and analyzing vibration signals effectivly of the rolling bearing, it has also provided a good transmission performance at a fast speed and can be introduced to the industry.