The monitoring system is also called closed-circuit television monitoring system. A typical monitoring system is mainly composed of five parts: front-end audio and video acquisition equipment, audio and video transmission equipment, back-end storage, control and display equipment. The back-end equipment can be further divided into central control equipment and sub control equipment. The front and rear end devices have a variety of composition modes, and the connection between them (also called transmission system) can be realized through coaxial cable, twisted pair, optical fiber, microwave, wireless and other ways.
Introduction to front-end monitoring equipment of monitoring system
video camera Advanced CCD image sensing technology is adopted. It has automatic aperture interface, automatic white balance, electronic shutter, illuminance requirements, backlight compensation, standard definition or high resolution and other cameras suitable for various occasions for users to choose. It can be divided into:
Black and white camera: economical and practical, with super one stream definition and sensitivity;
Color camera: high definition and color form sharp image contrast;
Hemisphere black and white/color camera: economical and convenient, with its own lens and mounting bracket, which can be consistent with the surrounding environment;
Lens: adjust the shooting range to obtain a suitable image by changing the lens. The lens can cooperate with a series of cameras. It is divided into fixed focus lens and zoom lens. There are wide-angle, standard and long focal length fixed focus lenses. You can also choose a manual aperture lens suitable for places with constant lighting conditions or an automatic aperture lens more suitable for places with frequent changes in lighting; The adjustment of the zoom lens can meet the requirements for the field of view of the subject.
Infrared light projector: provide the lighting required for the camera to work at night.
Camera protective cover and support: effective to prevent man-made damage to the camera and play the role of water, dust and fixation. Omnidirectional PTZ: It can rotate up, down, left and right to realize omnidirectional monitoring.
Pan tilt lens controller : The remote control site PTZ rotates in all directions and adjusts the focal length and aperture of the camera lens.
Monitor head: It can monitor the scene sound with high sensitivity while monitoring the scene image.
Monitor: high-quality display of images picked up by the camera. A variety of black and white and color monitors are available
Wuxi Dehang Technology Co., Ltd., founded in 2010, is a computer network system integration and weak current engineering service company in z industry.
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.
