1. Front-end physical connection linkage (switch signal linkage) The alarm signal (switch) of the front-end detector is directly connected to the corresponding camera alarm input interface.
2. Linkage between alarm and hard disk video recorder (DVR/NVR) (switch signal linkage)
Working principle: Once the anti-theft alarm host receives the front-end alarm signal (wireless or wired signal), the alarm host transmits the alarm data to the linkage module through 485 communication.
It is physically connected to the "alarm linkage input terminal" of the hard disk video recorder (DVR/NVR), and the video linkage function is realized through the background software that comes with the hard disk video recorder.
It should be noted that in order to achieve this function, the other party's hard disk video recorder needs to have an alarm linkage input port (generally, there are 4 channels, 8 channels, 16 channels, etc. specifications).
3. Linkage between alarm and network camera
Working principle: Once the anti-theft alarm host receives the front-end alarm signal (wireless or wired signal), the alarm host connects with the alarm center software through wired network, GPRS network or serial port, etc.
The camera server sends a video call command, obtains the corresponding camera video signal, and then sends it back to the alarm software of the center through the network to realize the video linkage function.
It should be noted that this kind of linkage is mainly based on anti-theft alarm software, and the final linkage video is also reflected in the anti-theft alarm software interface.
At present, our software is generally compatible with well-known brands such as Hikvision, Dahua, and Uniview. Some video surveillance systems are irrelevant.
Assuming that the No. 1 alarm has been pre-bound with the No. 1 camera in advance, then when the No. 1 alarm triggers an alarm, it will send an alarm signal to the alarm host, and the alarm host will transmit it to the alarm center software in the form of a network, and the software will send to the remote camera server.
Send out the command to call the video of the No. 1 camera, and then send the video signal of the No. 1 camera back to the alarm software of the center through the network to realize the video linkage function.
4. Linkage between alarm and Netchrome video server
Working principle: Once the anti-theft alarm host receives the front-end alarm signal (wireless or wired signal), the alarm host transmits the alarm data to the third-party Netchrome video server through the wired network, GPRS network or serial port to retrieve the corresponding Netchrome camera.
The video signal is then transmitted back to the video server terminal display wall of the center through the network to realize the video linkage function.
It should be noted that this function is mainly based on the back-end video software, and we need to provide the SDK data of the alarm device to the "Netchrome Video Server" manufacturer for integration.
