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Fire location method based on infrared thermal imaging and laser guidance technology

A technology of infrared thermal imaging and laser guidance, which is applied to fire alarms, fire alarms, instruments and other directions that rely on radiation. It can solve the problem that the highest temperature point cannot be dynamically tracked, and achieve high speed, high positioning efficiency, The effect of improving positioning accuracy

Active Publication Date: 2019-04-30
河南联纵消防科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sensor it uses is a single-point pyroelectric sensor, which is different from the infrared thermal imaging sensor used in the present invention, and it cannot dynamically track the highest temperature point

Method used

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  • Fire location method based on infrared thermal imaging and laser guidance technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] After receiving the fire warning signal, perform full-coverage scanning, start the vertical motor to find the zero point (the bottom and right is the zero point), and stop; start the vertical motor to lift 1°~50°, and stop; start the horizontal motor to turn right to the limit, Stop; start the vertical motor to lift up 50°~90°, stop; start the horizontal motor to turn left to the limit, stop; when scanning with full coverage, the highest temperature point meets the fire conditions, start the motor to compensate, so that the highest temperature point of infrared thermal imaging Center, and then start the laser beam to scan the highest temperature point and its surroundings. When the laser beam is irradiated on the fire source point, the precise positioning is realized according to the laser beam feedback signal received by the receiver.

Embodiment 2

[0028] After receiving the fire warning signal, perform full-coverage scanning, start the vertical motor to find the zero point (the bottom and right is the zero point), and stop; start the vertical motor to lift 1°~50°, and stop; start the horizontal motor to turn right to the limit, Stop; start the vertical motor to lift up 50°~90°, stop; start the horizontal motor to turn left to the limit, stop; during full coverage scanning, if the highest temperature point does not meet the fire conditions, start the motor to reset.

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Abstract

The invention discloses a fire location method based on infrared thermal imaging and laser guidance technology, comprising the following steps: 1) receiving an early warning signal; 2) starting a motor for infrared thermal imaging and visible light scanning, and if there is no fire signal, go to step 3 ), if there is a fire signal, go to step 4); 3) Reset and wait for the next warning signal; 4) Drive the motor to compensate, so that the highest temperature point of infrared thermal imaging is centered to achieve precise positioning. Compared with the prior art, the present invention uses infrared thermal imaging technology to locate the fire of the fire water cannon. Since the infrared thermal imaging technology scans in the form of an area array, its positioning efficiency is high and the speed is fast. Visible light image processing technology Using the method, the black, white, gray or three primary colors of the highest temperature point and its surrounding pixels can be matched. If it matches the fire model, it is determined to be the fire source point.

Description

technical field [0001] The invention relates to a fire positioning method based on infrared thermal imaging and laser guidance technology, which belongs to the field of fire protection. Background technique [0002] Infrared thermal imaging uses photoelectric technology to detect infrared specific band signals of thermal radiation of objects, converts the signals into images and graphics that can be distinguished by human vision, and can further calculate the temperature value. Infrared thermal imaging technology enables human beings to transcend visual barriers, so that people can see the temperature distribution on the surface of objects. [0003] Infrared thermal imaging technology has a wide range of applications and has high application value in detecting forest fires. For example, in large forests, fires are often started by invisible fires. This is the source of destructive fires, and it is difficult to find the hidden signs of fires with existing common methods. H...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08B17/12
CPCG08B17/125
Inventor 施秀琴牛军赵勇李佩乾张海军徐中洋赵振洋陈家柱冯光飞袁德河
Owner 河南联纵消防科技有限公司
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