Undulatory wear detection device and undulatory wear detection method

Abstract

The invention provides an undulatory wear detection device and an undulatory wear detection method. The undulatory wear detection device comprises an encoder, at least one accelerometer, at least one photoelectric displacement meter, a front preprocessing device and a QNX system. The encoder is arranged on an axle of a train; the at least one accelerometer is arranged on a frame of the train and used for measuring acceleration signals according to train traveling distances measured by the encoder; the at least one photoelectric displacement meter is arranged on the frame of the train and used for measuring photoelectric displacement signals according to the train traveling distances measured by the encoder; the front preprocessing device is connected with each accelerometer and each photoelectric displacement meter and used for amplification and filtration of the acceleration signals and the photoelectric displacement signals; the QNX system is connected with the front preprocessing system and used for synthesizing the preprocessed acceleration signals and the photoelectric displacement signals to obtain an unsmoothness value of a railway and subjecting the unsmoothness value to overrun judgment. By the undulatory wear detection device and the undulatory wear detection method, real-time data processing can be realized, and the problem of loss of a great quantity of cache data is solved.

Description

technical field [0001] The invention relates to rail wave wear detection technology, in particular to a wave wear detection device and method. Background technique [0002] Rail wave wear is a periodic wave-like irregularity distributed along the longitudinal direction of the rail top surface. The wavelength of rail wave wear is generally between 100mm and 3m. According to field investigations, most of the wavelengths of wave abrasion are between 200mm and 700mm . [0003] Rail wave wear is one of the common defects in the use of rails. All countries attach great importance to the development of testing equipment. There are two detection methods for corrugation: short chord measurement method and inertial reference method; signal acquisition has acceleration There are also methods of using eddy current sensors, such as optical methods and optical methods; data processing is also divided into time domain, space domain, frequency domain and other processing methods. For exam...

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Problems solved by technology

[0014] The embodiment of the present invention provides a wave wear detection device and method for real-time data processing, which solves the problem of loss of a large amount of cached data

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