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Method and device for locating underground personnel in coal mine

A technology for personnel and coal mines, which is applied in the field of personnel positioning methods and devices in coal mines, can solve problems such as low flexibility, high cost, and large fluctuations in signal strength, so as to reduce the accumulation of system errors, improve accuracy and reliability, and contain speed drift effect

Active Publication Date: 2013-07-24
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The algorithm of RFID positioning technology is simple, but it has the following disadvantages: its positioning accuracy is proportional to the placement density of the radio frequency card reader, and the cost of improving the accuracy is high; the reading speed of the radio frequency card is limited, and when multiple people pass the radio frequency card reader at the same time , there will be missed detection; in addition, the reading range of the RF card reader is limited, the direction of the RF card and the antenna placement of the RF card reader need to meet a certain matching relationship, and the flexibility is low
However, due to the complex underground environment, numerous interference sources, and large fluctuations in signal strength, the accuracy of the correspondence between signal strength and distance is low, resulting in instability of the final positioning effect

Method used

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  • Method and device for locating underground personnel in coal mine
  • Method and device for locating underground personnel in coal mine
  • Method and device for locating underground personnel in coal mine

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] figure 1 It is a schematic composition diagram of the automatic positioning device for underground personnel in a coal mine according to the present invention. Such as figure 1 As shown in , the positioning device mainly includes an attitude and orientation sensing module 1, an embedded computing control module 2 and a Zigbee wireless transmission module 3, which are preferably integrated into a block structure and detachably placed on the ground of the underground personnel as the positioning object. foot. Specifically, the posture and orientation sensing module 1 is, for example, the MP...

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Abstract

The invention discloses a method for automatic location of underground personnel in the coal mine. The method is as below: (a) detecting current triaxial acceleration and triaxial angular velocity of an underground personnel as a location object on real-time basis, and detecting the magnetic field strength of a current location; (b) collecting the above data periodically, and calculating location information, including motion velocity and relative position, of the location object in each collecting period by using these detection data; and (c) transmitting the calculated location information through a Zigbee wireless network to a ground monitoring system for storage and real-time display, thus completing the location process on the underground personnel. In addition, the invention also discloses a corresponding automatic location device, and optimization schemes for the implementation of posture estimation on the location object and zero velocity correction processing. By the invention, personnel location with high accuracy and reliability can be achieved, and good application of Zigbee network in the coal mine environment can be given full play.

Description

technical field [0001] The invention belongs to the technical field of wireless communication positioning, and more specifically relates to a method and device for locating personnel in a coal mine underground. Background technique [0002] With the continuous development of the coal industry, the demand for production management and production safety of coal enterprises is also increasing. Among them, the effective positioning of underground personnel in coal mines is not only conducive to improving management quality, but also a reliable guarantee for safe production and accident rescue. Since the GPS signal cannot be received underground, the GPS system cannot be used to solve the problem of personnel positioning. At present, RFID positioning or Zigbee positioning is usually used to realize the positioning of underground personnel. Both of these positioning methods belong to wireless signal positioning. It is necessary to place positioning sensors at the passage openings ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/08G01C21/12
Inventor 肖力孙志刚肖永健岳东王卓
Owner HUAZHONG UNIV OF SCI & TECH
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