Oil Debris Detection System for Rolling Bearing Based on FPGA
The metal debris in lubricating oil can reflect the current wear situation of rolling bearings.Aiming at the problem of poor real-time performance and low detection rate of metal debris system in oil,this paper designed a metal debris detection system for rolling bearing oil based on FPGA.By analyzing the realization principle of the new four-coil inductive sensor,the four-coil inductive sensor,conditioning circuit,excitation signal source and digital signal processing acquisition system were designed.Through the experiments of different kinds of chips,it was found that the amplitude difference of the induced voltage generated by the sensor was 0.665 V when the 300 μm iron chip passed through the sensor,and the amplitude difference of the induced volt-age generated when the 400 μm copper chip passed through the sensor is 0.445 V.The results show that the system has the char-acteristics of good real-time detection and high sensitivity,which is of great significance for oil quality and fault evaluation in roll-ing bearings.
FPGArolling bearingmetal debrisinductive transducerdetection system
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