Down-hole wireless safety monitoring system based on 2.4 GHz and 433 MHz frequency band mixed grouping

A hybrid networking and wireless security technology, applied in signal transmission systems, instruments, data exchange through path configuration, etc., can solve problems such as less functions, inconvenient equipment movement, and difficult maintenance

Inactive Publication Date: 2008-07-16
SHANGHAI UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The application of these systems has played a role in underground safety monitoring, but there are also some problems. Due t

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  • Down-hole wireless safety monitoring system based on 2.4 GHz and 433 MHz frequency band mixed grouping
  • Down-hole wireless safety monitoring system based on 2.4 GHz and 433 MHz frequency band mixed grouping

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Embodiment Construction

[0016] A preferred embodiment of the present invention is described in detail as follows in conjunction with accompanying drawing:

[0017] Referring to Figure 1, this underground wireless safety monitoring system is based on a mixed network of 2.4GHz and 433MHz frequency bands. The system network consists of a 2.4GHz frequency band network composed of multiple mobile nodes 1 and fixed nodes 2, and a 433MHz frequency band network composed of multiple transmission nodes 4 1. It is composed of a gateway node 3 and an inoue host 5 connecting the 2.4GHz frequency band network and the 433MHz frequency band network. Mobile node 1 is installed in the mine cap of the miner, with body temperature sensor, pulse sensor and alarm buzzer. The mobile node 1 sends positioning information to the surrounding fixed nodes 2 at regular intervals. After receiving the mobile node information, the fixed node 2 first judges what type of information it is. If it is positioning information, it returns ...

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Abstract

The invention relates to a downhole wireless safety monitoring system based on mixed networking of 2.4 GHz and 433 MHz frequency ranges. The system consists of mobile nodes, fixed nodes, a gateway node, a transmission node and a ground main frame, wherein the mobile nodes are mainly carried by miners and are provided with sensors for monitoring the body temperature and pulse of each miner; the fixed nodes arranged in mine roadways are also provided with sensors for monitoring ambient gas density at real time; the ground main frame receives data collected in the downhole, displays personnel positioning information and physiological parameter information at real time, displays a gas density curve at real time, and is capable of setting up an overrun alarm and releasing act of rescue information to the downhole.

Description

technical field [0001] The invention relates to the field of coal mine safety and sensor networks, and is an underground wireless safety monitoring system based on mixed networking of 2.4GHz and 433MHz frequency bands. Background technique [0002] For a long time, the coal mining industry has been a high-risk industry with a high rate of industrial accidents. Gas explosions and mine collapses have occurred from time to time, posing a serious threat to the lives of underground workers. How to issue an early warning before the accident and inform the underground staff to implement emergency evacuation; how to carry out timely and effective rescue after the mine disaster occurs are the focus of the underground safety monitoring system research. [0003] The existing underground safety monitoring system is generally composed of sensors, substations, transmission systems and monitoring centers, and uses wired transmission. The application of these systems has played a role in u...

Claims

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Application Information

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IPC IPC(8): G08C17/00H04L12/28
Inventor 施惠昌沈明华蒋敏田金鹏
Owner SHANGHAI UNIV
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