The application of surveillance cameras in elevators. When most elevators are not in use, the fluorescent lights in the car are in an energy-saving off state. If you need to monitor the box for 24 hours, you can choose an infrared dome camera, otherwise you can choose a normal dome camera. (When someone enters the elevator car, the light will automatically turn on). Because the elevator car is very short, it is inevitable to destroy the equipment at will. At this time, the user can choose the explosion-proof hemisphere surveillance camera.
Elevator is a carrier with a complicated environment. The motor and power supply outside the car will generate huge interference signals when it is running; the interference of the monitored video signal is naturally a problem frequently encountered by the majority of engineering companies. So how to avoid it?
First of all, from the selection of equipment, engineers and users should try their best to use mature equipment on the market and special hemispheric surveillance cameras with strong anti-interference ability for elevators. At the same time, use elevator-dedicated cables when wiring, and be careful not to damage the cables. In terms of power consumption of the camera, use the monitoring power interface reserved by the elevator as much as possible to prevent accidental leakage accidents; but the interference problem cannot be solved in the normal mode, and anti-interference measures can be considered in the transmission line.
At present, most elevator monitoring camera systems are built in a wired transmission mode using analog signals. The connection is displayed on the display platform of the monitoring room. As for the display position, there is no special requirement. It is displayed in a conspicuous and easy-to-view according to the needs of users. Location is fine.
Due to the small elevator space and crowded personnel, once an accident occurs, it is difficult to rescue, then when installing surveillance cameras, you should pay more attention to strict operating procedures and installation specifications; do not connect or pull irrelevant cables randomly, and the interface of the line must comply with the specifications. Do not overlap randomly; the quality of the products used should be as reliable as possible (such as: cameras, transformers, cables, etc.), and relevant test reports and certificates should be available. In this way, the occurrence of various accidents can be reduced.
In addition, the longer the video line, the greater the possibility that clutter signals will interfere with the video, and the quality of video signal transmission will decrease; in some larger industrial areas, where centralized monitoring is required, this kind of analog signal transmission The system will lose its function. At this time, engineering companies and users can adopt the mode of digital signal transmission to reduce signal interference and simplify wiring, or use wireless transmission to avoid the cumbersome things of construction wiring.
