Coal mine moving target positioning method and system

Abstract

The invention discloses a coal mine downhole locomotive positioning method and a system thereof. Fixed-frequency wireless transmitters are mounted on relays which are successively arranged on a leaky cable. The successively arranged transmitters are grouped. A microprocessor which is mounted in a positioning receiving terminal of the locomotive performs tuning receiving on a frequency fn which is transmitted by an n-th fixed-frequency wireless transmitter in a space. Furthermore a frequency fn is acquired through filtering and coupling of a bandpass filter circuit. A detection circuit performs detection on a sinusoidal signal with frequency of fn, and a magnetic field strength voltage signal Hn which is directly proportional to fn, wherein Hn satisfies an equation of xn=k / Hn. A distance between the locomotive and the well head of a mine is obtained according to number and distance of the positioning relays. According to the coal mine downhole locomotive positioning method and the system, the system is formed through adding the fixed-frequency wireless transmitter on the existing relays of the leaky cable, and the distance between the downhole locomotive and a digital receiving base station at the well head is obtained. The coal mine downhole locomotive positioning method and the system thereof have advantages of high application effect, simple structure, relatively low cost, effective algorithm optimization and effective production technical requirement satisfaction.

Description

technical field [0001] The invention relates to a method and system for locating a moving target in a coal mine. Background technique [0002] Mine tunnels and tunnels will become criss-crossed with the continuous expansion of the excavation surface; at the same time, the underground communication signal attenuation is relatively large, and it is difficult to fully cover; there are many shifts and high mobility of operators, and the location and quantity of vehicles change in real time. Although the personnel observe the underground information through monitoring, the location information is not intuitive. When responding to underground accidents, it is difficult to obtain the specific location information of vehicles and personnel in the accident section in time, which brings inconvenience to the implementation of emergency plans and timely rescue. Often results in a waste of rescue time. Contents of the invention [0003] An object of the present invention is how to mak...

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Problems solved by technology

[0002] Mine tunnels and tunnels will become criss-crossed with the continuous expansion of the excavation surface; at the same time, the underground communication signal attenuation is relatively large, and it is difficult to fully cover; there are many shifts and high mobility of operators, and the location and quantity of vehicles change in real time. Although the personnel observe the underground information through monitoring, the location information is not intuitive. When responding to underground accidents, it is difficult to obtain the specific location information of vehicles and personnel in the accident section in time, which brings inconvenience to the implementation of emergency plans and timely rescue. Often results in a waste of rescue time

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