Underground locating and monitoring communication system
A communication system and subsystem technology, applied in the field of mine monitoring system, can solve the problems of RFID reading and writing speed limit, easy to miss reading, high explosion-proof requirements, and achieve the effect of reducing the number of base stations, reducing system costs, and improving use efficiency
Active Publication Date: 2015-05-27
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology
[0004] 1. The positioning accuracy is limited by the distribution density of readers. It can only achieve regional positioning, and cannot achieve accurate positioning with an error of a few meters. Assume that an RFID card reader is placed at each end of a 500-meter roadway underground. Cards have detection capabilities within 30 meters of each, but cannot know the location information of personnel within 440 meters in the middle;
[0005] 2. Limited by the reading and writing speed of RFID, it cannot handle the situation that many people pass through the card reading system at the same time, and it is easy to miss reading
[0007] 1. The underground is mostly a linear environment composed of tunnels, which is different from the flat positioning environment in an open space. The installation position of the wireless communication router is limited by space;
[0008] 2. The transmission loss model of wireless signals is greatly affected by the environment
[0010] 4. Due to the high explosion-proof requirements of underground electrical equipment, the installation cost of wireless communication routers is high, so the number is limited, but the Zigbee wireless communication distance is short, and there is not enough wireless communication routers to meet the long-span underground system communication requirements , so there are difficulties in cost and installation in the implementation of specific projects;
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[0035] exist figure 1 In the shown embodiment, the downhole positioning monitoring communication system includes: a positioning server (3), a storage server (4), a WEB server (5), a monitoring terminal (1), a dispatching station (7), a wired communication subsystem, a wireless communication A base station (8) and a mobile communication device (6). The wired communication subsystem is the backbone network of the whole system, and the wired communication subsystem uses optical fiber as the main transmission medium. The wired communication subsystem includes network management equipment such as an optical splitter and a wireless switch (2). A wireless communication base station (8) is installed at a certain distance in the downhole, and is connected to an uphole positioning server (3) through an optical fiber. The main function of the wireless communication base station (8) is WI-FI wireless access. The positioning server (3) is responsible for system communication management,...
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The invention discloses a locating and monitoring communication system comprising a locating server, a storage server, a WEB server, a dispatching desk, a monitor terminal, a wire communication subsystem, a wireless communication base station and an underground mobile communication device. The backbone network of the locating and monitoring communication system adopts the Ethernet. The locating and monitoring communication system is a comprehensive application system integrating three main system functions such as monitoring, personnel locating and communication, and can promptly and accurately reflect the dynamic conditions of personnel, equipment and environment in each underground area to a ground monitoring system, so that managerial personnel can master the distribution conditions of personnel and equipment and the environment conditions such as underground methane density at any time, which facilitates more reasonable dispatching and management. When an accident occurs, rescuing personnel can know the position condition and the environment condition of underground personnel fast according to data and figures provided by the locating and monitoring communication system, so as to take corresponding rescuing measures promptly, which improves the efficiency of emergency rescue.
Description
technical field [0001] The invention relates to a mine monitoring system. The invention specifically relates to the technical fields of wireless communication, wireless positioning, detection and computer geographic information. Background technique [0002] The six systems of underground safety and risk avoidance in coal mines include: monitoring and monitoring, personnel positioning, communication, emergency risk avoidance, self-rescue under pressure wind, and water supply and rescue. Among them, the positioning of personnel underground is an important measure for safe production. Over the years people have adopted various methods to detect the position of underground personnel. [0003] At present, the actual use is mainly based on radio frequency identification technology (RFID). RFID uses radio frequency to carry out non-contact two-way communication to achieve the purpose of identification and exchange data. A typical radio frequency identification system mainly inc...
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IPC IPC(8): H04W4/04E21F17/18
Inventor孙继平刘毅
OwnerCHINA UNIV OF MINING & TECH (BEIJING)