Brief Analysis of Wuxi Dehang Technology How to Select Surveillance Camera?
With the growing popularity of the monitoring system in commercial and civil use, the monitoring camera (monitoring video camera ）It is widely used in various fields to protect social security. The monitoring camera is the core equipment of the whole monitoring system. The selection should be carefully based on the site environment and user needs.
1. Select according to the installation mode
For fixed installation, most of the surveillance cameras are ordinary gun type surveillance cameras or hemispherical surveillance cameras; If the PTZ installation mode is adopted, now more integrated surveillance cameras (ball machines) are used. Features: built-in electric zoom lens, elegant and beautiful, easy to install, cost-effective. The ordinary gun type surveillance camera can also be configured with an external PTZ and decoder, but the installation remains unchanged and the overall aesthetics is poor.
2. Select according to the installation site
The ordinary gun type surveillance camera can be both wall mounted and ceiling mounted, so indoor and outdoor are not restricted and flexible; The hemispherical surveillance camera can only be installed on the ceiling, so it is mostly used indoors and has a fixed installation height limit. However, compared with the gun type surveillance camera, it does not need to be equipped with additional protective cover and support, which is convenient to install, beautiful and concealed, and economical in price.
3. Select according to ambient light
If the light conditions are not ideal, try to select the monitoring camera with low illumination, such as color ultra-low illumination monitoring camera, color black and white automatic conversion monitoring camera, low illumination black and white monitoring camera, etc., to achieve better video capture effect. It should be noted that if the light illumination is not high and the user has high requirements for the clarity of the monitoring image, black and white cameras should be selected. If there is no relationship, infrared lights should be added to provide lighting or a surveillance camera with infrared night vision function should be selected.
4. Select according to the requirements for image clarity
If the resolution of image quality is required to be high, the monitoring camera with high TV line index shall be selected. Generally speaking, for color surveillance cameras, 420TVL and 480TVL lines are medium resolution surveillance cameras, and those above 520TVL are high resolution surveillance cameras. The higher the definition, the higher the price.
5. Performance index
Attention should also be paid to some performance indicators in the product description, such as signal to noise ratio, driving mode of automatic aperture lens, etc. In general TV monitoring system, the signal to noise ratio index should be greater than 48dB, which not only meets the requirement of not less than 38dB specified in the industry standard, but also is important when the ambient illumination is insufficient, the higher the signal to noise ratio, the clearer the image of the monitoring camera will be.
In addition, the intelligent camera for monitoring has been selected, so the installation should be more careful, and the correct operation should be carried out in strict accordance with the product manual, such as operating temperature, power supply, etc. The temperature index of most surveillance camera manufacturers is - 10~+50 ° C. If the temperature and humidity in the area of use change greatly, special protection should be added.
Wuxi Dehang Technology Co., Ltd., founded in 2010, is a computer network system integration and weak current engineering service company.
For many years, the company has been committed to information system integration, Internet/Intranet software development, building a technical service network covering the whole country, and providing a complete set of solutions for large, medium and small users such as early planning, scheme design, application development, system installation, debugging and personnel training of information systems and weak current systems. So far, it has provided hundreds of large and medium-sized computer network systems and weak current engineering solutions in the fields of finance, insurance, securities, power, banking, civil aviation, railway, water conservancy, petrochemical, national defense, customs, telecommunications, scientific research institutions, etc.
