Security and monitoring alarm system
System overview
Security system is a comprehensive security system, which uses a variety of high-tech means to monitor, alarm and record specific areas in real time. The security system mainly includes video surveillance, access control, intrusion alarm, fire alarm and so on.
Part of the security system
Video surveillance system: Through the installation of cameras, real-time monitoring of important areas, while you can look back at the video to find out the cause of the event.
Access control system: Through the control of important entrances and exits, prevent unauthorized personnel from entering, and can be linked with the monitoring system to improve security.
Intrusion alarm system: Through the installation of detectors, when someone or something illegally enters a specific area, it sends an alarm signal to remind relevant personnel to deal with it in time.
Fire alarm system: Through the installation of smoke sensing, temperature sensing and other equipment, timely detection of fire hazards, to avoid the occurrence of fire accidents.
The role and significance of security system
Improve security awareness: the existence of the security system makes people feel the importance of security at all times, so as to improve security awareness.
Crime prevention: Through real-time monitoring and alarm system, the occurrence of criminal behavior can be prevented to a certain extent.
Improve the level of security: the security system can provide accurate information and evidence to help relevant personnel deal with security incidents in a timely manner, thereby improving the overall level of security in society.
Improve management efficiency: Through the security system, managers can understand the situation on the spot in real time and deal with problems in a timely manner, thereby improving management efficiency.
Promote social harmony: The effective operation of the security system helps to reduce the occurrence of security incidents and promote social harmony.
Alarm host design
According to the networking mode between the detector, emergency alarm equipment and alarm host, the alarm host can be divided into the following three categories.
1) Bus system
Detector, emergency alarm equipment through its corresponding addressing module and the alarm control host between the alarm bus (special line) connected, such as the bus alarm host, when the defense area is more, the distance between the detector and the alarm host is far, should choose this type of alarm host. At present, bus alarm host is recommended for most scenes of buildings.
2) Line system
The detector and emergency alarm equipment are connected to the alarm control host by a one-to-one special line through a multi-core cable, such as the network alarm host. When there are fewer defense areas (8-16) and the distance between the detector and the alarm host is relatively close, this type of alarm host can be selected.
3) Wireless system
The detector and emergency alarm equipment communicate with the alarm host through their corresponding wireless devices, and the emergency alarm devices in one defense area cannot be too many.
Transmission network design
Although the cost of the transmission network is not high, it is of great significance for the timely and reliable reporting of alarm information. The three main transmission network methods are as follows:
1) Telephone alarm 110 reporting method
Through its own phone alarm, when the alarm is triggered, dial 110 preset phone to 110 response police center to achieve the alarm report. The CID packets are reported to the receiving device in the receiving and handling center.
2) Cable IP reporting mode
Using the existing network, data information is directly sent to the center through wired IP mode, two-way communication supports the center to the host control operation, the device status and defense area status are displayed in real time, and the heartbeat detection device is displayed online in real time (when using this mode, the alarm reporting bandwidth should be reserved).
3)GPRS reporting mode
When the phone and IP network can not cover the scenario, or GPRS as a redundant backup reporting method: the premise is that the mobile phone signal can be covered, wireless GPRS network data can solve the needs of such police reporting. Using the mobile phone card installed on the host, GPRS network packet information is sent through the wireless antenna. Two-way communication supports the center to control the host and query the status of the device defense area. The heartbeat between the alarm platform and the device detects the online status of the device in real time. Usually, this method is applied to the public network environment, and generally transmits the alarm for the security company or the 110 receiving and handling police center.
Emergency response center design
The receiving and handling alarm center is the information control and management center of the alarm system, which is responsible for receiving all kinds of status reports and alarm reports of all control communication hosts in the network, remote programming of front-end equipment, and monitoring the working status of the system and communication lines. The equipment function, organization form and management level of the receiving and handling police center directly affect the whole network. The alarm center equipment is usually composed of special alarm receiver, alarm management software and server, and other printing and fax auxiliary equipment.
After the front-end detector alarm occurs, the integrated management platform will automatically pop up according to the application Settings of the video review system. Through the organic combination of the alarm and video system, the scene situation is monitored through video, so that the responding personnel can quickly and accurately determine whether it is the real alarm, and deal with the alarm in the first time, thus reducing the police resources. It is also of great significance to provide reliable video material evidence. Usually, when there is no alarm linkage, the central platform can also actively preview and playback the front-end user's on-site image.
System advantage
Supports multiple communication methods
Communication is the key link of the network alarm system, alarm subsystem supports PSTN, Internet, GPRS, 3G, VPN, LAN and other types of rich communication methods, easy to use flexibly.
Strong compatibility
Compatible with all kinds of mainstream manufacturers alarm host, and can support CBX IPC, DVR, NVR and other video surveillance equipment access, to achieve linkage with video applications.
Easy to integrate
The system provides open TCP/IP data interface protocol, supports server or client mode, and can forward alarm information to third-party platforms, such as video, fire, 110 and other public systems to achieve alarm integration linkage.
Strong scalability
The whole system adopts plug-in design, which can be very convenient for online upgrade and expansion and secondary development.
