At present, many high-definition network cameras are equipped with alarm input and output interfaces. How do we effectively integrate video surveillance and alarm linkage, and combine the video surveillance system with the alarm system? Let's take a look together!
The process of alarm linkage can be logically divided into:
(1) Acquisition of alarm signals;
(2) Transmission of alarm signals;
(3) alarm storage;
(4) The application of alarm signals.
NO.1 ? Alarm signal acquisition
The alarm signal collection is mainly completed by the alarm unit. The alarm unit mainly refers to the alarm signal generation equipment and provides the alarm information for the monitoring system. Usually, the alarm equipment has infrared, smoke, temperature, magnetism, emergency buttons, etc. The alarm equipment usually provides a switch output, and the front end encoder accepts the switch signal to realize the linkage between the alarm signal access system and the alarm. The alarm signal access diagram is as follows:
Alarm signal access map
NO.2 ? Alarm signal transmission
The transmission process of the alarm signal refers to a process in which the alarm signal is transmitted to the back-end by the front-end encoder and output locally or through the IP network. There are three final directions for the alarm signal:
The alarm signal is output by the local encoder, triggering the local sound and light alarm;
Alarm signal through the network, the platform to the client to trigger the sound, text and other alarms;
The alarm signal is sent to the third-party system via the network and the platform to provide alarm.
Alarm signal flow graph
? NO.3 ? storage of alarm signals
Now most network system monitoring systems have perfect information storage and management functions. The system can automatically store alarm-related records, and can provide related record query, export, and other functions.
NO.4 ? Alarm signal application
When an alarm occurs, the front-end alarm device sends the alarm level to the front-end encoder, and the front-end encoder uploads the alarm information to the monitoring center to provide the alarm. The system can automatically or manually initiate a linkage mechanism to handle the alert. can be realised:
1. Upload and display alarm information and live image and sound
The system can automatically or manually output the image and sound of the alarm site to the client or the TV wall, providing the monitoring center with the information of the alarm site, facilitating the prompt handling of the police situation.
2. Trigger alarm recording and store backup on-site alarm
The system can automatically or manually store back-up information on the alarm site for future inquiries and calls, providing factual evidence for police handling.
3. Trigger live alarm sound alarm signal, implementation of field detection alarm
The system can automatically or manually alarm the alarm site. After the monitoring front end is equipped with alarm devices such as alarm bells and warning lights, the front-end encoder can send alarm signals to local alarm bells and warning lights as required to achieve local alarm signal output and alert the site.
Alarm linkage diagram
4. Manually supervise the situation of the police, and use the two-way voice function to direct and guide the incident.
When an alarm occurs, the monitoring center operator can use a two-way audio function to shout at the alarm site to conduct real-time communication with the front-end site, conduct command and guidance on the scene, and quickly handle the police situation.
5. Capture the police scene and keep a copy of the crop certificate;
When an alarm occurs, the monitoring center operator can use the system's image capture function to capture the alarm site image and retain it as the basis for handling the alarm.
6. Combine an electronic map to quickly locate the incident
The system supports the electronic map function. When a police situation occurs, the system can quickly locate the location of the incident and provide assistance for the prompt handling of the police situation.
7. Provide alarm information and image information to other systems to implement multi-system linkage processing;
When an alarm occurs, the system can provide alarm signals and image information for other application systems to implement multi-system linkage processing and handle alarm situations in a timely and effective manner.
The effective combination of end alarm linkage and video surveillance will inform the management personnel of the situation on the spot in the form of images, texts, sounds, etc. at the first time, allowing them to respond quickly and effectively and record the events that have occurred for processing. The accident provides a practical basis to truly ensure the safety and reliability of the entire system and the effect of real-time monitoring.
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