How does the night vision surveillance camera module work?

Night vision surveillance cameras generally use infrared night vision cameras, the working principle is in the dark environment of no visible light or low light, the use of infrared transmitter to actively project infrared light to the object, infrared light reflected by the object into the lens for imaging. The infrared camera emits infrared light to illuminate the object, and the infrared light is diffused and received by the monitoring camera to form a video image. Just like using a flashlight to illuminate the night, the flashlight is equivalent to the infrared light, the camera is equivalent to the human eye, the reason is the same. At this time, what we see is the picture of infrared light reflection, rather than the picture of visible light reflection, then we can shoot the picture that the naked eye can not see in the dark environment. Infrared monitoring camera features: 1, sensitive to temperature, according to the temperature to the image, can be quantitative identification of temperature data, and can be user-defined temperature alarm limits. Both the infrared temperature image display of the forest, the temperature data display at the same time, and the temperature abnormal alarm signal output. 2, when the alarm triggers the alarm, and the alarm trigger signal is transmitted to the background equipment through RS232/485. 3, can completely penetrate the smoke, partial attenuation to penetrate the fog. 4, no visible light is required, and the clarity of the image at night even exceeds that of the day. 5, fast response speed, 50HZ image output per second. 6, the monitoring area is large, infrared thermal image monitoring head working state, passive detection of all targets in the screen of infrared heat radiation, it has 76800 detector units, while measuring the temperature data of 76800 image points in the whole picture, into the temperature distribution of heat image, detection Angle is horizontal 24º, vertical 18º, the effective area of detection is related to distance. The infrared thermal image monitoring head belongs to the surface array detection equipment, and the monitoring area is very large.

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