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UWB-based precise calibration method for coal-cutter absolute position and apparatus

A technology of absolute position and calibration device, which is applied to earth-moving drilling, cutting machinery and other directions, can solve the problems of difficulty in ensuring accuracy and inability to achieve absolute positioning of shearers, and achieve the effect of ensuring accuracy, high bandwidth and large system capacity.

Inactive Publication Date: 2015-05-13
CHINA UNIV OF MINING & TECH
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Problems solved by technology

The disadvantage of this method is that due to the drift of the gyroscope and accelerometer, the shearer has a strong vibration during the working process, so the accuracy is difficult to guarantee, and the absolute positioning of the shearer cannot be realized

Method used

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  • UWB-based precise calibration method for coal-cutter absolute position and apparatus
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  • UWB-based precise calibration method for coal-cutter absolute position and apparatus

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] UWB technology has the following important advantages:

[0032] (1) Strong anti-interference performance: UWB signals disperse weak radio pulse signals in a wide frequency band during transmission, and the output power is even lower than the noise generated by ordinary equipment. When receiving, the signal energy is restored, and the spreading gain is generated in the process of despreading. (2) High transmission rate: The data rate of UWB can reach tens of megabits per second to hundreds of megabits per second, and the rate has been greatly improved compared with other methods. (3) Extremely wide bandwidth: The bandwidth used by UWB is above 1GHz and up to several GHz, and it can work simultaneously with the current narrowband communication system without interfering with each other. This is in today's increasingly tight frequency resources. A new time-domai...

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Abstract

The invention discloses a UWB-based (Ultra Wideband) precise calibration method for a coal-cutter absolute position and an apparatus. The apparatus comprises a coal cutter body, a coal-cutter positioner, a positioner explosion-proof housing, a host computer, four ultra-wideband (UWB) wireless communication sensors and a POE (Power Over Ethernet) switch; the coal cutter body is fixedly provided with the positioner explosion-proof housing; the positioner explosion-proof housing is inside provided with the coal-cutter positioner; the coal-cutter positioner is inside provided with a UWB positioning label; the ultra-wideband (UWB) wireless communication sensors are fixedly disposed on a hydraulic support at a coal-cutter running end at intervals; and the ultra-wideband (UWB) wireless communication sensors are connected with the host computer via the POE switch. ultra-wideband (UWB) wireless communication is utilized for precise calibration, the anti-interference capability is strong, the transmission speed is high, relatively high bandwidth and relatively low power consumption are provided, and also precise positioning for a downhole coal cutter is provided, and the apparatus is safe, reliable, easy to install and convenient to operate.

Description

technical field [0001] The invention relates to a method and a device for accurately calibrating the absolute position of a coal shearer, in particular to a method and a device for accurately calibrating the absolute position of a coal shearer based on UWB. Background technique [0002] Coal resources are the main energy in our country, and the rational mining and utilization of coal resources is the premise of the healthy development of the current mining industry. In the mining process of coal resources, the coal shearer is one of the important equipment for underground operations. At present, when the normal coal mining operation is carried out in the fully mechanized mining face, the linkage of the shearer, the scraper conveyor and the hydraulic support is still operated manually in many cases, but in order to realize the automation of the whole process, it must be realized Three-machine linkage automation of coal shearer, scraper conveyor and hydraulic support. At the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C35/08
CPCE21C35/08
Inventor 刘万里刘一鸣
Owner CHINA UNIV OF MINING & TECH
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