Mobile gas monitoring system and method based on accurate positioning in underground coal mine

Abstract

The invention discloses a mobile gas monitoring system and a method based on accurate positioning in underground coal mine. The system comprises: a mobile gas detector brought by people who enters a mine and used to detect gas concentration; a radio communication base station arranged in the mine and for determining a position of the mobile gas detector and receiving information about sensed gas concentration by carrying out radio communication with the mobile gas detector; a monitoring center server used to receive the information of the sensed gas concentration and information of the position of the mobile gas detector from the radio communication base station to carry out information management. The system and the method provided in the invention can be used for safety monitoring management of daily production in the coal mine to guarantee safe production in the coal mine, and also can provide basis for decision of coal mine cataclysm rescue, with the system and the method, rescue progress can be accelerated and post-disaster casualties can be minimized.

Description

technical field [0001] The invention relates to the field of mine monitoring and communication, in particular to a mobile gas monitoring system and method based on precise positioning in underground coal mines. Background technique [0002] Underground gas explosion accidents in coal mines are major disasters in mines, which seriously threaten the lives of miners. Real-time and effective monitoring of mine gas concentration, alarm when the gas concentration exceeds the limit, evacuation of operators and cutting off the power supply of the working face in time, has a positive effect on preventing gas explosion accidents and disasters. [0003] The existing coal mine gas monitoring method mainly uses the gas (ie, methane) sensor fixedly installed in the coal mine roadway to monitor the gas concentration in the roadway, and transmits the monitoring data to the ground monitoring center through the monitoring substation placed underground, and the monitoring substation When the ...

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Problems solved by technology

[0004] However, the disadvantages of this existing method for monitoring underground gas are that the number of sensors is small, the coverage area is small, and the delay time for the gas flow in the working face to reach the sensor is long, making it difficult to achieve real-time and effective gas monitoring.

[0005] At the same time, with the development of technology, improved technical solutions have emerged. For example, the Chinese invention patent "Mine Gas Monitoring Method and System" (publication number CN1786422A) proposes to collect gas concentration data through the gas sensor on the mobile working unit. The method provided by the invention cannot determine the location of the mobile unit, the underground location of the measured gas concentration is uncertain, and cannot effectively monitor the underground gas; in addition, the Chinese invention patent "Wireless Sensor Network Coal Mine Gas Monitoring System" (public number CN101446205A) proposed The communication method between the sensor network node and the cluster head, the sensor network node has dust and gas sensors, and does not involve the location of the location of the measuring point; in addition, the Chinese utility model patent "new underground gas positioning and monitoring system" (CN201908690U ) introduced a gas monitor and a code recognizer, which transmits the gas concentration information to the industrial computer through a wireless network and an optical fiber transceiver. to the location of the gas concentration

[0006] In the prior art mentioned above, since the gas cannot be monitored as the underground personnel move, the gas concentration near the underground personnel cannot be effectively detected, so that the safety of the working environment cannot be guaranteed and large-area underground gas monitoring cannot be effectively realized.

In addition, since the position of the gas detector cannot be located, it is impossible to clearly move the location of the gas monitoring

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