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Elevator video monitoring cable manufacturers take you to understand the issues that need to be paid attention to when installing elevator monitoring
- Categories:Industry news
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- Time of issue:2022-05-26 18:02
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(Summary description)Elevator video monitoring cable manufacturers tell you to install elevator monitoring, usually divided into two situations, one is that the elevator is designed to monitor in the planning, and the elevator manufacturer has reserved the elevator accompanying cable according to the elevator construction requirements.
Elevator video monitoring cable manufacturers take you to understand the issues that need to be paid attention to when installing elevator monitoring
(Summary description)Elevator video monitoring cable manufacturers tell you to install elevator monitoring, usually divided into two situations, one is that the elevator is designed to monitor in the planning, and the elevator manufacturer has reserved the elevator accompanying cable according to the elevator construction requirements.
- Categories:Industry news
- Author:
- Origin:
- Time of issue:2022-05-26 18:02
- Views:
Elevator video monitoring cable manufacturers tell you to install elevator monitoring, usually divided into two situations, one is that the elevator is designed to monitor in the planning, and the elevator manufacturer has reserved the elevator accompanying cable according to the elevator construction requirements.
Another situation is that the elevator has been running normally, and now the later planning needs to be installed and monitored. At this time, it is a bit troublesome, because the elevator industry belongs to a special industry, and the maintenance and management of the elevator cannot be operated at will, and the elevator construction party needs to coordinate and cooperate with the construction.
The manufacturer of Elevator video monitoring cable tells you that basically all elevators now have monitoring equipment. The elevator camera is generally viewed from the upper right or upper left of the entrance. It is appropriate to use a 2.8mm lens. When we install the camera What elements should be present?
Master the types and characteristics of commonly used coaxial cables:
1. Transmission attenuation should be considered when installing cameras in elevators: when the floor is very high and the distance from the monitoring center is far away, transmission attenuation should be carefully considered.
2. Elevator installation cameras should pay attention to high frequency attenuation: Elevator video monitoring cable manufacturers tell you that the brightness/contrast attenuation of low frequency components is easy to find and solve. The most important transmission characteristic of the cable is that the higher the frequency, the greater the attenuation, and the high frequency attenuation mainly affects the clarity. degree and resolution.
3. Cable life should be considered when installing cameras in elevators: flexible cables are better than ordinary cables, and thin cables are better than thick cables.
4. Power, lighting, fan, control, communication and other cables are usually arranged in the elevator shaft, and various cables will generate electromagnetic radiation. The same as the antenna receiving principle, the coaxial cable will also "receive" these interferences, that is, the interference electromagnetic field will generate interference induced current on the cable, and this interference induced current will also generate interference induced voltage on the longitudinal resistance of the outer conductor (braided mesh) of the cable. (electromotive force), this interference induced voltage is just connected in series with the long ground wire of the video signal transmission loop to form interference.
5. The manufacturer of Elevator video monitoring cable tells you that the more important thing for elevator installation cameras is that these accompanying cables are parallel to the video cables and bundled together at a close distance. This results in a near-optimal and efficient interference coupling relationship.
In general engineering, the shielding interference method of wearing metal pipes or metal grooves can be used, but in the environment where the elevator is moving, this method is powerless. Therefore, the anti-interference in the elevator environment is very difficult, and only better design and construction methods can be selected;
6. It is very important to understand the basic principles of interference generation when installing cameras in elevators, and it is very important to improve anti-interference design and construction.
Although many elevator monitoring uses wireless bridges, the current elevator monitoring is still mainly wired for stability and budget considerations.
Elevator video monitoring cable manufacturers tell you that the cables in elevator monitoring must meet a certain tensile strength. On the one hand, elevators are generally high-rise, up to more than 100 meters, and the weight of more than 100 meters of cables is very heavy, so The cables used must have sufficient tensile strength.
Attention should be paid to the construction process. When wiring, the elevator installer or maintenance party should cooperate to complete the wiring. When laying cables, people need to stand on the top of the car. The elevator needs professionals to start and stop operations. Don’t think that you can do it without incident Then, you know when something happens. Always pay attention to safety first.
The elevator cable is divided into two parts in operation: 1. the follow-up part; 2. the static part. Generally, the upper part from the elevator machine room to half of the elevator shaft belongs to the static part. Therefore, at the beginning of the monitoring system design, the cables are laid from the weak current well to this hole and punched into the elevator shaft, which not only saves the cost of the cable, but also saves the cost of the elevator. Save construction costs.
Elevator video monitoring cable manufacturers tell you that elevator cameras are an important way to protect the residents of the community. With the continuous occurrence of accidents in elevators in recent years, the safety of elevators has attracted the attention of the masses, and the installation of elevator cameras has played a key role.
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