| High-speed train with its high efficiency and strict time execution has gradually become the inter-city people generally choose travel tools. And with the high speed train vehicle running speed gradually increasing, passengers load increasing, technology to ensure the safety of the train put forward higher requirements. Train bogie with in the process of whole vehicle running and its important role, Truck axle box bearing temperature is a can well reflect the working status of important data, Master the real-time temperature information, can be largely determine the working state of bearing, In this paper, design a kind of thin film thermocouple temperature sensor, based on the technology of ceramic sintering can achieve real-time monitoring of the transient temperature measurement of axle box bearing.According to the working principle of thermocouple and the actual work environment designed the parallel electrode film temperature sensor, Use the ceramic sintering process fixed electrode, the dc pulsed magnetron sputtering deposition film on the surface of the electrode tip, successfully made a parallel electrode film temperature sensor. And characterization of thin film surface morphology, static calibration results show that the sensor of seebeck coefficient of 41.2 mu V / ℃, dynamic calibration according to the response time of 0.021 ms. Through the selection and the emu bogie axle box bearing structure similar to that of 32016 and 32016 two kinds of models of taper roller bearing, experimenting in S9916 type bearing vibration measuring instrument. In view of the two kinds of needle roller bearings under different diameter, different speed of bearing temperature was tested, results show that the warming in a timely manner, stable rate. Prove in this paper, the design of the sensor can test the high-speed emu bogie axle box bearing transient temperature, can adapt to the changing situation, the axial temperature real-time monitoring. |
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