Sonar Guidance Escape Rescue System

Abstract

The invention discloses a sonar guiding escape rescue system, comprising an ultrasonic wave emission module and an ultrasonic wave receiving module, wherein the ultrasonic wave emission module is used as a sound source to emit single frequency ultrasonic signals and laser rays; the ultrasonic wave receiving module is used for receiving the ultrasonic signals emitted by the ultrasonic wave emission module, and indicating the direction and distance of the sound source. Accordingly, the sonar guiding escape rescue system can help fire-fighting personnel to perform escape guidance, search and rescue at the scene of the fire. The sonar guiding escape rescue system applies the sonar technology to the fire scene escape guidance of fire-fighting personnel, is safe, reliable and portable, and is influenced less by the environment; by employing the system, the fire-fighting personnel can rapidly and accurately find escape outlets and guarantee the safety of the fire-fighting personnel.

Description

technical field [0001] The invention relates to an ultrasonic-based escape and rescue system, which belongs to the technical field of sonar. Background technique [0002] At present, after firefighters enter the fire scene, the main guiding escape tool used to find the exit is the guide rope. Because the guide rope itself is heavy and not easy to carry, its guide distance does not exceed 50 meters, and because the guide rope has high temperature, it may be burned. , It is not easy to be found when the visibility of dense smoke is low, and the safety of firefighters cannot be reliably guaranteed, so its application is greatly limited. [0003] Ultrasound has beam and reflection characteristics, can basically propagate along a straight line, and its energy is much greater than low-frequency sound waves of the same amplitude. In the air medium, ultrasonic waves are hardly affected by light, dust, smoke, electromagnetic interference and toxic gases. However, since the sound sou...

AI Technical Summary

Problems solved by technology

However, since the sound source level of ultrasonic transmitting transducers commonly used in the air on the market is 112dB, and the opening angle of -6dB is 60±15°, they are mainly used in ultrasonic distance measurement, and the maximum detection distance is 15 meters, which cannot meet the requirements. The requirements for the use of guided escape at the fire scene, so the application of sonar to the guided escape at the fire scene has not been found so far

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