How do night vision security cameras work?

Night vision surveillance cameras generally use infrared night vision cameras. The working principle is to use an infrared transmitting device to actively project infrared light onto objects in a dark environment without visible or dim light. reflected by the object. Enter the lens for imaging.

The infrared camera emits infrared rays through infrared lamps to illuminate objects. Infrared rays are diffusely reflected and received by the surveillance camera to form a video image. Just like using a flashlight to illuminate in the dark, the flashlight is equivalent to infrared light, and the camera is equivalent to the human eyeball. The principles are the same. At that time, what we see is the image formed by the reflection of infrared light, not the image formed by the reflection of light visible. At this time, we can take photos invisible to the naked eye in a dark environment.

Detailed information:

1. Temperature sensitive, images are formed based on temperature, temperature data can be identified quantitatively, and the user can customize temperature alarm limits. It not only displays the infrared image of forest temperature, but also displays the temperature data at the same time, and also emits the temperature abnormality alarm signal.

2. The alarm is triggered when the alarm occurs, and the alarm trigger signal is generated and transmitted to the background device through the RS232/485 port.

3. It can completely penetrate dense smoke and partially alleviate thedense fog.

4. No visible light is required and the image clarity at night is even better than during the day.

5. Fast response speed, 50Hz per second image output.

6. Large surveillance area. When the infrared thermal imaging monitoring head is operating, it passively detects infrared thermal radiation from all targets on the screen. It has 76,800 detection units and simultaneously measures 76,800 pixels overall. Screen. The point temperature data is converted into a thermal image of temperature distribution. The detection angle is 24° horizontally and 18° vertically. The effective detection area is related to distance. The infrared thermal imaging monitoring head is area detection equipment and has a large monitoring area.

National brands of best quality surveillance cameras incurrently listedHikvision, EZVIZ, Inspector Shenyan,>Lecheng, Xiaomi, 360.

You can choose Hikvision or Shenyan Inspector for exterior surveillance, and EZVIZ or Xiaomi for interior surveillance.

1. Simple installation: install it yourself, no need to hire construction workers;

2. Adjustable angle: 360. -degree rotatable, no blind spot monitoring;

3. No need to connect to electricity: solar power generation and built-in lithium battery power supply;

4. need to drill into the walls, no need to destroy the decoration;

5. Ready to install and use: No distance restrictions, you can watch it in real time if you have an internet connection.

1. No wiringe required: location may be changed at any time;

2. Easy Installation: It is very convenient to install and add cameras;

3. Low network consumption: you can connect to WiFi or insert a 4G card.

It is not limited by the geographic distribution of resources and can take advantage of the building roof for flexible installation;< /p>

Direct power from solar energy does not require long distance transmission to avoid losses in long distance transmission lines;

Solar energy is inexhaustible and has low operating costs;

Solar energy solar energy production is safe and reliable and will not suffer from the impact of the energy crisis or the unstable fuel market;

Solar power generation has no moving parts, is not easy to damageand is simple to maintain, especially suitable for unattended situations;

Short construction period, easy to obtain energy It takes little time;

Power generation solar produces no waste, does not consume electricity, causes no pollution and has no negative impact on the environment.