Method for accurately positioning single base station under coal mine

Abstract

The invention discloses a method for accurately positioning a single base station under a coal mine, which comprises the following steps that: S1, a positioning terminal sends broadcast information tothe positioning base station, a directional antenna A and a directional antenna B of the positioning base station receive a UWB signal sent by the positioning terminal, a Zigbee antenna of the positioning base station receives a Zigbee signal sent by the positioning terminal, and the positioning base station records a receiving timestamp T1; S2, the positioning base station determines the position of the positioning terminal through Zigbee signals, and meanwhile, the positioning base station accurately positions the positioning terminal through UWB signals received by the directional antennaA and the directional antenna B and judges the walking directivity of the miner in the roadway; and S3, the positioning base station replies the positioning terminal information and records a sendingtimestamp T2, and the positioning base station calculates to obtain information processing time TD1=(T2-T1). The invention provides a method for accurately positioning a single base station in an underground coal mine, which is used for accurately positioning an area limited by quantity and position in base station deployment aiming at factors such as underground environment, communication network, engineering implementation difficulty cost and the like.

Description

technical field [0001] The invention relates to a method for precise positioning of a single base station in a coal mine. Background technique [0002] At present, with the increase of mining depth and mining scale, the problem of safety production in coal mines has become more and more prominent, and has become the main factor restricting mine safety, economy and effective mining. The precise personnel positioning system in coal mines is now one of the "six major systems" necessary for coal mines, and it plays an important role in the attendance of underground personnel, standardization of production behavior, management of special operators, production scheduling, and emergency rescue. [0003] The existing coal mine accurate personnel positioning system integrates mine precise positioning and regional positioning, and uses the ring network to transmit detection data, and the base station and the base station have a ring network cascading interface, so a complete set of mi...

AI Technical Summary

Problems solved by technology

Due to the complexity of the underground path, to achieve full coverage of underground signals requires a large number of base stations deployed underground. Originally, two base stations were required for each detection point to achieve directionality. The communication network and engineering implementation are costly and difficult.

Although the existing similar products can achieve precise positioning, the engineering implementation is difficult and the cost is high

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