Remote fault diagnosis system based on DSP for rolling bearing

A online rolling bearing fault diagnosis system is designed using TI Company´s digital signal processor DSP-TMS320F2812 as the core processor. The hardware is built by the various peripheral modules of F2812, which includes the acquisition of vibration signal, rotating-speed signal, digital signal, and communicates with the upper monitor by RS-232 protocol and TCP/IP protocol. According to the common faults occurred in rolling bearing, the power spectrum, zoom power spectrum and wavelet envelope analysis are used in data processing to extract fault feature. The algorithms is embedded in DSP and can run independently without the upper monitor. It can get the type, location and extent of the fault by the fault feature vector. Tests show that the system can realize on-line monitoring for a long time, and can correctly identify the faults.