Flame vision distance measuring device and method

Abstract

The invention relates to a flame vision distance measuring device and method. The flame vision distance measuring device comprises a camera used for photographing a flame and a controller used for receiving an image captured by the camera and identifying the flame; the device further comprises a pan / tilt used for fixing and adjusting the angle of the camera; the controller comprises a memory and aprocessor as well as a program stored in the memory and executed by the processor; when the processor executes the program, the following steps are performed: aiming the camera at a center point of aflame region after the flame region is identified and obtained; rotating the camera to an another point of the flame region and recording a rotation angle; calculating the number of pixel points between the two points; obtaining the distance between the flame region and the camera based on the number of pixel points, the rotation angle and pre-calibration parameters of the camera. Compared with the prior art, by adopting the device provided by the invention, the dilemma in the prior art that the visual flame recognition can only be simple alarm is overcome by calculating the distance throughtrigonometric functions and the pixel points, and the application range and scene of the flame vision technology can be greatly improved.

Description

technical field [0001] The invention relates to a fire-fighting technology, in particular to a flame vision ranging device and method. Background technique [0002] Fire is extremely destructive, so people attach great importance to fire prevention, and invest a lot of manpower and material resources in the research and development of fire prevention, detection and elimination technologies. [0003] The flame is composed of various combustion products, intermediates, high-temperature gases, hydrocarbon substances and high-temperature solid particles with inorganic substances as the main body. The thermal radiation of a flame has a discrete spectrum of gas radiation and a continuous spectrum of solid radiation. The flame radiation intensity and wavelength distribution of different combustibles are different, but generally speaking, the near-infrared wavelength domain and ultraviolet light domain corresponding to the flame temperature have a large radiation intensity, and a f...

AI Technical Summary

Problems solved by technology

[0006] However, with the rapid development of computer technology and image processing technology, the traditional device based on the flame sensor architecture can no longer meet the actual needs, so the video flame detection device has received more and more attention.

[0007] Common video detection devices can only scan the area, detect the suspected flame area and identify the direction of the flame according to the image algorithm, but cannot measure the actual distance between the area and the device. Such a device can only be used for The fire alarm provides signal output, and cannot help the automatic pretreatment of fire protection devices to provide support and help

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