Thermal cameras detect fire by the object infrared radiation energy, after being processed by the system, it is transformed into a thermal image of the target object, which is displayed in grayscale or pseudo-color, and the temperature distribution of the measured target is obtained to judge the state of the object.
The background temperature of the forest area is generally -40 ℃ ~ 60 ℃, and the temperature of the combustible flame is generally 600 ℃ ~ 1200 ℃. The temperature difference between the two is large, and the contrast is obvious in the image. In addition, we have carried out algorithm processing such as image enhancement, image correction, filtering, etc. on the thermal image, and obtained a clear and real-time image.
Therefore, based on the infrared radiation of fire, thermal images can easily separate the combustion of combustibles from the terrain background.
Set presets and scan route, camera will auto scan the setting area, 24*7 continuous monitoring.
Transmission and control is via RJ45 port(network), user could either use network cable or use *Wireless Netbridge for the area where network is unavailable.
Control center could be at the edge of the forest. When fire detected, there will be pop-up window and alarm on the software interface.
Visible light camera works as supplement to thermal imaging camera. As it is mentioned above, thermal camera works based on the infrared radiation of fire. However, it could not monitor the ignition points that cannot be seen directly by themral imaging, such as the fire source in the col and the back mountain.
With visible light, smoke could be easily discovered to find early fire in time of the col and back mountain.
What focal length should be choose? We have visible light camera as following:
After reading “Relationship Between Alarm Distance & Thermal Camera Focal Length”, you may have a general understanding of the camera focal length that we recommend.
On thermal part, we recommend 100/150/180mm thermal lens with detector 640×512 resolution.
On visible light part, above lens could be chosen to match the thermal part. For example, if you require 2km fire detection, you choose 100mm thermal lens, then you may choose 4.3-129mm/8-320mm visible lens.
As a result, here are some typically configuration for choice:
We offer software for camera control and alarm.
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