A method and device for accurate calibration of absolute position of shearer based on UWB

A technology of absolute position and calibration method, which is applied in the direction of earthwork drilling, cutting machinery, etc., can solve the problems that the accuracy is difficult to guarantee and the absolute positioning of the shearer cannot be realized, and achieve the effect of ensuring accuracy, high bandwidth, and large system capacity

Inactive Publication Date: 2017-11-24
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

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  • A method and device for accurate calibration of absolute position of shearer based on UWB
  • A method and device for accurate calibration of absolute position of shearer based on UWB
  • A method and device for accurate calibration of absolute position of shearer based on UWB

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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

A UWB-based precise calibration apparatus for the absolute position of a coal cutter comprises a coal cutter body (1), a coal cutter locating device (2), an explosion-proof enclosure (3) of the locating device, an upper computer (5), four Ultra Wide Band (UWB) wireless communication sensors (6) and a POE switch (10). The explosion-proof enclosure (3) of the locating device is fixed on the coal cutter body (1). The coal cutter locating device (2) is connected in the explosion-proof enclosure (3) of the locating device. An UWB locating label (4) is included in the coal cutter locating device (2). The Ultra Wide Band (UWB) wireless communication sensors (6) are equidistantly fixed on a hydraulic bracket at an end; and the Ultra Wide Band (UWB) wireless communication sensors (6) are connected with the upper computer (5) via the POE switch (10). A UWB-based precise calibration method for the absolute position of a coal cutter is also disclosed. The apparatus can use the Ultra Wide Band (UWB) wireless communication to precisely calibrate so that the apparatus has strong anti-interference capacity, high transmission rates, wider bandwidth and lower power consumption, the precise location of a downhole coal cutter can be 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 Patents(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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