Vibration interception auxiliary rescue system based on optical fiber

Abstract

The invention discloses an audio restoration auxiliary rescue system based on optical fiber vibration, and belongs to the technical fields of safety production and accident rescue. The audio restoration auxiliary rescue system solves the problems of dependence of the prior art on a power system, poor anti-interference ability, large rescue positioning deviation and the like. The principle of the audio restoration auxiliary rescue system is that an optical fiber is used as a sensor, a pulsed light source emits pulsed light into the optical fiber, and at the same time, equipment detects the back-Rayleigh scattered light at the incident end of the pulsed light to analyze return light intensity information. The back-Rayleigh scattering of the optical fiber is high in regularity, and when the optical fiber has no vibration, the intensity of the back-Rayleigh scattering returned is basically fixed. Slight vibration information caused by activities or speaking of underground personnel is transmitted back to the ground through the optical fiber, and an analysis system determines the location of vibration and restores the audio according to the time at which an abnormal value is, so that arescue command center knows the exact location and status information of personnel to be rescued in time, and a reliable information guarantee is provided for accurate rescue.

Description

technical field [0001] The invention relates to the technical fields of optical fiber vibration monitoring, optical fiber sensing, audio restoration, safe production and accident rescue. Background technique [0002] Coal is one of the main energy sources in my country, and coal mining is mainly based on underground mining. The production and operation environment of underground mines is complex, and there are many safety hazards in the production process. They are often affected by roof, gas, electromechanical, explosion, flood, fire , landslides and other disasters caused casualties. How to determine the location and status of the trapped people after the accident has become the primary task of rescue. With the continuous development of science and technology, the existing positioning technology communication methods for trapped persons include Bluetooth technology, infrared technology, ultra-wideband technology, WIFI technology, ZigBee technology, etc. However, this kind...

AI Technical Summary

Problems solved by technology

However, this kind of positioning technology has problems such as blind spots, high failure rate, easy corrosion of equipment, especially the dependence of equipment on power, and it cannot be used without power.

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