What are the linkage modes between perimeter alarm detector equipment and monitoring?

With the increasing awareness of security, the perimeter detectors have entered many communities and factories, but for the current situation, normal defenses have not been able to shock the invaders, in order to prevent security and to prevent illegal invasion. For those who are not doing things, nowadays, many places where the perimeter alarm system is installed are selected to be linked with the surveillance video. So what is the linkage? What is the role of linkage? What are the linkage models?

In fact, the linkage between perimeter alarm and monitoring means that when the perimeter system generates an alarm, the camera in the nearby area can immediately turn the lens to the alarm area and record, and the monitoring screen is immediately displayed in the display of the control center. This linkage mode can help security personnel to immediately handle the alarm situation, and can record the appearance of the intruder and strengthen the prevention.

The linkage mode of the perimeter alarm system and monitoring is nothing more than the following three modes.

The first type of linkage: front-end physical connection linkage

The alarm signal (switch quantity) of the corresponding zone of the perimeter alarm device such as the electronic fence and the infrared beam is directly connected to the camera that needs to be linked with it. Because of the short transmission distance of this type of linkage mode, the linkage reaction is generally fast and there is no delay.

However, it needs a matching camera with a linkage interface, which is generally more expensive.

The second linkage method: physical linkage of the control center DVR

After the perimeter electronic fence and infrared radiation warning signal are transmitted to the control center using the 485 bus, the linkage module is added to convert the bus signal back to the switch signal of each zone, and the switch signal is connected to the corresponding interface of the hard disk recorder. Linkage through a hard disk recorder. This mode wiring and connection is relatively simple. At present, most DVRs on the market have linkage interfaces, which is a common linkage mode of early video surveillance systems. However, due to the large number of signal transmission conversion methods and long transmission distance, delays and failures are more likely to occur.

The third linkage mode: control center management software linkage

The perimeter electronic fence and infrared radiation warning signal are transmitted to the control center and then linked by the alarm host control software. Network TCP/IP transmission is a common transmission method today. The software control interface is relatively clear, and there are many optional function settings, such as automatic recording, automatic capture, and automatic storage. However, software control is affected by the network environment and there will be a certain delay. The software requires debugging settings.

The above three linkage modes are the three modes that are more common nowadays. The specific linkage mode to be used depends on the defense zone and the perimeter alarm products applied.