Fire alarm device and method based on infrared thermal imaging system

Abstract

The invention discloses a fire alarm device based on an infrared thermal imaging system. The device comprises the infrared thermal imaging system, an alarm ring and a micro PC, wherein the infrared thermal imaging system comprises an infrared lens, a raster and an infrared detector, infrared radiation rays of a to-be-detected object are received through the infrared lens, the infrared radiation rays of the to-be-detected object after raster interference and diffraction arrive the infrared detector, an energy distribution diagram is lastly reflected to light-sensitive elements of the infrared detector to acquire infrared thermal images; the micro PC is used for realizing vision identification of the images from the infrared thermal imaging system, a special area of the images is extracted, if the special area is greater than a critical area, a danger signal is returned, the alarm ring is triggered to alarm through the danger signal, through external connection with a wireless serial port, the information can be transmitted to fire extinguishing equipment to carry out real-time fire extinguishing. The device is advantaged in that not only can sensitive fire detection and accurate alarm be realized, but also the device is further stable and reliable and can adapt to various types of complex environments.

Description

technical field [0001] The invention relates to the field of intelligent fire alarms, in particular to a fire alarm based on an infrared thermal imager and a fire alarm method. Background technique [0002] At present, automatic fire alarm technology is playing an increasingly important role in preventing and containing fires, but the level of automatic alarm is still relatively backward, and there are a series of outstanding problems. What is needed in crowded public places is a safe and reliable fire alarm that is less affected by environmental factors to ensure the safety of people's lives and property. Due to the immature automatic technology of fire alarms at this stage, the reliability of prevention capabilities is not high. , so the scope of application is too small; and even though my country's fire alarms have a certain intelligent design, the parameters detected by the sensor are few, and the stability and accuracy of the algorithm are not too high, which affects th...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantages and deficiencies of the prior art, and provide a fire alarm based on an infrared thermal imaging camera, which can detect fires sensitively and give an accurate alarm, as well as be stable and reliable and adapt to a variety of complex environments, so as to solve general problems. The alarm function is not perfect and there are other technical problems of unstable factors

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