Rescuing and positioning system by knocks for mine disaster

A positioning system and sound mine technology, applied in the field of disaster rescue, can solve the problems of damage to the underground signal source system, failure of the positioning system for people trapped in mine disasters, and failure to operate normally, achieving low power consumption, convenient deployment, The effect of small system size

Inactive Publication Date: 2011-06-15
NORTHEAST NORMAL UNIVERSITY
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Problems solved by technology

When a mining disaster occurs, the underground signal source system may be damaged and cannot operate normally, so that the mine disaster trapped personnel positioning system cannot play its due role

Method used

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  • Rescuing and positioning system by knocks for mine disaster
  • Rescuing and positioning system by knocks for mine disaster
  • Rescuing and positioning system by knocks for mine disaster

Examples

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Embodiment Construction

[0035] The examples in the scheme are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0036] 1. Signal collection:

[0037] The sensor uses a three-vector vibration accelerometer TG-3, which consists of three three-vector vibration accelerometers (hereinafter referred to as sensor A, sensor B and sensor C), and each three-vector vibration accelerometer can simultaneously measure x, y, z three direction of vibration acceleration. Based on sensor A, the z direction of sensor B is consistent with the z direction of sensor A, and the x direction is at a 45-degree angle to the x direction of sensor A; the x direction of sensor C is consistent with the x direction of sensor A, and the z direction is in line with The z-direction of sensor A is at an angle of 45 degrees. A total of 9 channels of signals from three sensors in three directions are pre-amplified and then transmitted to the signal frequency band division module. ...

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PUM

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Abstract

The invention belongs to a disaster rescuing technology and especially relates to a rescuing and positioning system by knocks for a mine disaster. In the rescuing and positioning system provided by the invention, knocks made by trapped people in a mine disaster are received and processed, and by the characteristics of strong penetrability of low frequency and even infrasonic wave signals in knock vibration, the position of a knock source is determined through the speed difference between the longitudinal wave mode and the transverse wave mode and the directivity of a vector vibration sensor. Each positioning and measuring point of the system provided by the invention comprises a signal collecting module, a signal frequency range dividing module, a frequency range priority selecting module, a rescuing point positioning and calculating module and a wireless data transmitting module. Each positioning and measuring point is an independent system, and multiple positioning and measuring points can form a search network to cover the whole detecting region as required. The rescuing and positioning system provided by the invention is not influenced by severe environments and equipment failure in the mine disaster, and can be independently used or combined with other positioning technologies to form a comprehensive positioning system for mine disasters.

Description

technical field [0001] The invention belongs to disaster rescue technology, in particular to a mine disaster rescue positioning system with percussion sound. Background technique [0002] As a fast-growing energy producing and consuming country, "mine disaster" is a word that appears frequently in China. According to incomplete statistics, in the period from January to April of 2010 alone, there were more than 30 major coal mine production safety accidents in my country, and the death toll reached hundreds of people. The frequent occurrence of coal mine safety accidents is shocking. Considering that these figures only occurred in one area of ​​coal mines within 4 months, and other mine accidents and deaths have not been counted, the death toll of mine accidents in the whole country is bound to be even larger. [0003] Preventing mine disasters from happening is the fundamental solution to mine disasters. However, when a mining disaster unfortunately occurs, rescuing the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/22
Inventor 王双维曹晓琳沈晓波高志华
Owner NORTHEAST NORMAL UNIVERSITY
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