Study on the on-line monitoring sensor of tracked armored vehicles

In current tracked armored vehicles, wear debris in lubricant oil cannot be detected effectively. Therefore, early fault alert and fault diagnosis cannot be realized. In this paper, the mathematical model of wear debris sensor was established. The influence of different parameters on the properties of the sensor is obtained by simulation analysis. Accordingly, the sensor design parameters were optimized. Furthermore, the LC oscillation circuit was introduced into the sensor circuit. The excitation frequency and capacitance were matched up, and a sensor sample was then designed. Wear debris detection test without oil and with oil were further conducted. The test results indicate: the sensor can detect metallic wear debris between 50 μm and 100 μm effectively, when the oil flow rate changes from 5 L/min to 40 L/min. Early fault alert and fault diagnosis of tracked armored vehicles can be realized.