A portable track irregularity online monitoring device and method

Abstract

The invention discloses a portable track irregularity online monitoring device and method. The device includes a vibration sensor, a speed sensor, an analog preprocessing circuit, an A / D converter, a single-chip microcomputer, a ZigBee circuit, an independent battery, an upper computer main control chip, and a network card interface; the vibration sensor is arranged above a series spring of the train running part On the framework of the train, the speed sensor is installed in the axle end cover of the train. The vibration sensor and the speed sensor collect the vehicle vibration signal and the speed signal respectively. The converter converts the analog signal into a digital signal. On the one hand, the digital signal is transmitted to the wireless communication terminal through the single-chip microcomputer, and on the other hand, it is transmitted to the host computer through the ZigBee circuit for fault diagnosis, analysis and processing; the host computer master chip receives the digital signal. Carry out signal analysis and processing and fault diagnosis. The invention has the advantages of convenient operation, high precision, low cost and the like.

Description

technical field [0001] The invention relates to the technical field of on-line monitoring of track irregularities, in particular to a portable on-line track irregularity monitoring device and method. Background technique [0002] Track irregularities are caused by repeated action of wheels and rails and deterioration of track sleepers, and are one of the important excitation sources that cause vehicle and track vibrations. When the track irregularity reaches a certain level, it will affect the stability of the vehicle, passenger comfort, the service life of the vehicle and the track, and even endanger the safety of the vehicle. Therefore, real-time online and effective detection and management of track irregularity is of great significance to railway operations. [0003] Tsunashima H et al. (Tsunashima H, Kojima T, Matsummoto A, et al. Condition monitoring of railway track using in-service vehicle [J]. Japanese Railway Engineering, 2008, 161: 333-356.) adopted the method of ...

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Problems solved by technology

[0003] Tsunashima H et al. (Tsunashima H, Kojima T, Matsummoto A, et al. Condition monitoring of railway track using in-service vehicle [J]. Japanese Railway Engineering, 2008, 161: 333-356.) adopted the method of installing a gyroscope on the car body The instrument collects the angular velocity of the car body to derive the track state, and uses the GPS system and map matching algorithm to accurately locate the fault location. However, installing the gyroscope system on the car body limits the measurement site of the system and increases the measurement cost.

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