Forest fire prevention early warning system and method based on infrared thermal imaging technology

Abstract

The present invention discloses a forest fire alarm system based on infrared thermal imaging technology comprising: an infrared camera mounted at an elevated location of the land area to be monitored and used to capture infrared thermal images of a monitored area, said camera comprising: a frontal temperature measurement and alarm module for calculating the alarm temperature value by using a temperature monitoring mathematical model, and for transmitting an excessive temperature alarm signal when there are abnormalities in said area; a video conversion device coupled to the infrared camera for converting an infrared thermal image analog signal outputted by the camera into an infrared digital signal, and for receiving from the camera said alarm signal and converting the alarm signal into a digital signal; a monitoring computer for generating and transmitting an infrared camera control signal, and for receiving, analyzing and processing the infrared digital signal to ascertain the location in the monitored area that triggered the infrared camera alarm, and for automatically generating a solution and reporting to the control center.

Description

technical field [0001] The invention relates to the technical field of environmental monitoring, in particular to a forest fire prevention early warning system and method based on infrared thermal imaging technology. Background technique [0002] At present, infrared thermal imaging technology and infrared temperature measurement technology have been applied to relevant aspects in the field of forest fire automatic early warning technology. Convert the infrared radiation on the surface of the measured object into a video signal to form a video image; then analyze the special software to capture the highest temperature point in the surveillance video; compare the highest temperature point with the preset alarm temperature, and the highest temperature point exceeds the preset alarm temperature. If the alarm temperature is set, the alarm will be triggered. [0003] In the existing infrared over-temperature monitoring and early warning technology, the imaging and alarm are real...

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Problems solved by technology

[0004] However, the monitoring method of forest fire prevention warning has its own particularity different from general environmental monitoring. The maximum temperature warning algorithm in the existing infrared monitoring method cannot meet the needs of forest fire prevention monitoring. The main reasons are as follows: 1. Fire monitoring has a long distance and a vast monitoring area, which requires extremely high technical requirements for infrared monitoring products. However, due to the long distance, temperature detection errors may be inevitable, which may cause the maximum temperature value detected by the instrument to be inaccurate.

2. The environmental factors of forest monitoring are very complex. Different seasons, temperature difference between day and night, latitude between north and south, and changing topography and landforms will make the overall or local climate full of variables, which is difficult to predict, and it is also difficult to deduce or summarize its change trend

In this way, the reference value of the alarm temperature should fluctuate up and down due to the influence of seasons, day and night, regional latitude and other temperature changes and climate changes, but its specific value is difficult to set randomly, which gives the infrared thermal image monitoring products the accuracy in different seasons. Temperature Measurement and Accurate Alarms Present Challenges

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