Mine Underground Precise Positioning System and Positioning Method Based on Linear Frequency Modulation Signal
A linear frequency modulation signal and precise positioning technology, applied in the field of positioning, can solve problems such as large errors, and achieve the effect of precise positioning and good application prospects
Inactive Publication Date: 2016-02-17
SHANDONG INST OF BUSINESS & TECH
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Problems solved by technology
The author's simulation test in the corridor of the building shows that the positioning error is 10m in a small area, and the error is larger in other positions; in the actual mine, due to the irregularity of the roadway, the error will be even greater
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Embodiment 1
[0048] A kind of accurate positioning system for underground mines based on chirp signals in this embodiment includes the following structures:
[0049] A tag with reliable communication8:
[0050] 1) A tag 8 capable of transmitting and receiving linear frequency modulation (LFM) signals, with a working frequency of 2.4GHz and a bandwidth of 80MHz;
[0051] 2) Each tag 8 has a built-in unique ID code, and each code corresponds to the identity information (employee number, name, ID number, etc.) Inside the machine;
[0052] 3) The tag 8 has low power consumption, powered by a rechargeable lithium battery, and the standby current can reach 3.5μA;
[0053] 4) The label 8 is provided with a call for help button I13, which is used to send out a call for help signal in an accident state.
[0054] 5) The tag 8 is small in size and can be carried by the personnel entering the well or installed on other objects to be detected.
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The invention relates to a mine underground precise positioning system and positioning method based on linear frequency modulation signals, and belongs to the technical field of positioning methods. The system comprises a plurality of anchor nodes which are provided with labels receiving and sending the linear frequency modulation signals and are mounted in underground work face areas and long and narrow roadways at intervals, the anchor nodes comprise a positioning anchor node, a relay anchor node and a communication control anchor node, the anchor nodes of adjacent areas are combined into a subnet, and the positioning function of the areas is achieved. The system and method are reasonable in design, distance measurement can be implemented based on a linear frequency modulation signal arrival time method, the mine underground precise positioning and real-time display are achieved, and mine underground safety production monitor and rescue requirements are met.
Description
technical field [0001] The invention relates to a precise positioning system and a positioning method in a mine underground based on a linear frequency modulation signal, and belongs to the technical field of positioning methods. Background technique [0002] Accurate positioning and real-time location display in underground mines have strong application prospects and demands in ensuring safe production in underground mines, emergency rescue, and personal safety protection for mine workers. On March 21, 2011, the State Administration of Work Safety and the State Coal Mine The Safety Supervision Bureau jointly issued the "Notice on Printing and Distributing the "Basic Specifications for the Construction and Improvement of the "Six Major Systems" of Underground Coal Mine Safety and Hedging (Trial Implementation)" (Anjian Zongmeizhuang [2011] No. 33), the basic requirements for the positioning system Yes: Coal mining enterprises must follow the requirements of "Code for Use and...
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IPC IPC(8): G06K19/07G06K17/00G01S5/06
CPCG01S5/14G01S13/876G06K7/10079
Inventor 魏书田张岩魏广芬张守祥丁昕苗高群
Owner SHANDONG INST OF BUSINESS & TECH