A vibration monitoring device and method for a shearer drum based on optical fiber sensing
A shearer drum and vibration monitoring technology is applied in measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., to achieve the effects of reasonable structural design, reduced human and material resources, and high sensitivity
Active Publication Date: 2019-01-11
CHINA UNIV OF MINING & TECH
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[0005] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a shearer drum vibration monitoring device and method based on optical fiber sensing, which has the advantages of simple structure, strong anti-electromagnetic interference, high sensitivity, and can avoid complicated winding of the sensor at the same time. Happening
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[0044] The present invention will be further described below.
[0045] Such as Figure 1 to Figure 4 As shown, the present invention consists of a fixed monitoring device and a rotating monitoring device. The rotating monitoring device includes a first light source module 3, a monitoring fiber optic ring 4, a photoelectric conversion module 5 and a single-layer wire coil 6; the fixed monitoring device includes a reflection Mirror 8, terbium-doped optical fiber 9, fiber coupler 10, second light source module 11, first photodetector 12, polarization beam splitter 13, second photodetector 14 and signal processing module 15;
[0046] The fiber coupler 10, the second light source module 11, the first photodetector 12, the polarization beam splitter 13, the second photodetector 14 and the signal processing module 15 are packaged inside the box body 16, and the whole box body 16 is installed in on the rocker arm;
[0047] The first light source module 3 and the photoelectric conver...
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The invention discloses a device and method for monitoring the vibration of a roller of a coal mining machine based on optical fiber sensing, and the device consists of a fixed monitoring apparatus and a rotating monitoring apparatus. The rotating monitoring apparatus comprises a first light source module, a monitoring optical fiber ring, a photovoltaic conversion module, and a single-layer conductor coil. The fixed monitoring apparatus comprises a reflector, a terbium-doped optical fiber, an optical fiber coupler, a second light source module, a first photoelectric detector, a polarization beam splitter, a second photoelectric detector, and a signal processing module. The rotating monitoring apparatus which rotates along with the roller of the coal mining machine carries out the collection of a vibration signal, converts the vibration signal into a light signal, and then converts the light signal into an electric signal. The fixed monitoring apparatus monitors the change of a magnetic field generated by the electric signal, and then carries out the resolving of the signal. Finally, the device achieves the direct monitoring of the vibration of the roller of the coal mining machine. The device is reasonable in structural design, is strong in anti-electromagnetic interference capability, is high in sensitivity, can achieve the real-time monitoring of the vibration of the roller, and guarantees the normal operation of the roller.
Description
technical field [0001] The invention relates to a vibration monitoring device and method, in particular to a vibration monitoring device and method for a shearer drum based on optical fiber sensing. Background technique [0002] With the continuous improvement of coal mine safety production requirements, as the key equipment of fully mechanized mining face, the automation of coal mining machine has become a necessary condition to realize the automation and less manpower of fully mechanized mining face. Shearer drum is a typical rotating structural machinery. When monitoring the data of machinery with this type of structure, it is necessary to design the monitoring system according to the actual working conditions. [0003] The vibration signals of all rotating mechanical parts contain rich state information, and the changes of these information directly or indirectly reflect the operation status of the shearer drum. Therefore, monitoring the vibration signal of the drum ha...
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IPC IPC(8): G01H9/00
CPCG01H9/004
Inventor 李威王祥辉许少毅王瑞林
Owner CHINA UNIV OF MINING & TECH