Railway retarder large-scale on-line monitoring device and method based on fiber bragg grating

Abstract

The invention discloses a railway retarder large-scale on-line monitoring device based on fiber bragg gratings. An FBG sensor is fixed on each monitored retarder, and the FBG sensors are connected with an optical fiber branching device through optical fibers; the optical fiber branching device is connected with a fiber bragg grating demodulator, and the fiber bragg grating demodulator is connectedwith a fiber bragg grating sensor; the fiber bragg grating demodulator is connected with a server through a signal line or a wireless network, and the server stores stress change information of eachmonitored retarder. According to the invention, the all-optical measurement and transmission are adopted, no electronic equipment exists on site, other electronic equipment of a railway is not interfered, the interference of other electronic equipment is avoided, and the insulation protection is not needed. The optical center wavelength value of each single FBG sensor is specific; in the laser band range, the low-cost large-scale deployment can be achieved, the working state of the retarder is monitored in real time, the labor intensity of workers is relieved, and meanwhile, the shunting safety of a railway freight yard is improved.

Description

technical field [0001] The invention relates to the technical field of on-line monitoring of railway equipment, in particular to the technical field of large-scale on-line monitoring of railway deceleration roofs. Background technique [0002] The railway deceleration top (referred to as deceleration top) is a kind of speed regulation and speed regulation equipment that uses hydraulic oil and elastic body as the medium, is installed on the rail, and the sliding cylinder head is in contact with the wheel to brake and decelerate the vehicle. When the deceleration top is used in the marshalling of vehicles in the railway freight yard, it controls the speed of the freight trains to ensure the safety of the marshalling trains. According to the control method, it can be divided into: ordinary deceleration top and controllable deceleration top. The ordinary decelerator does not require external energy when doing work on the vehicle, and decelerates all vehicles that exceed the cri...

AI Technical Summary

Problems solved by technology

However, due to the heavy weight of the online detection equipment, at least two people are usually required to operate it. Although the operating efficiency is greatly improved compared with manual work, it is not enough for thousands of ordinary speed reducers in the station.

In particular, it can only work at the skylight point, and the working time is very limited

[0015] From the above analysis, it can be seen that the efficiency of manual detection of the retarder is low, and relying on manual experience, it is impossible to accurately judge the state of the retarder

Although the efficiency of the detection of decelerators by the mobile detection vehicle disclosed at present is improved compared with manual work, the working time at the skylight point is limited, and it cannot meet the detection requirements of hundreds of units at the station.

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