Intelligent Community is a technology-based and take full advantage of computer technology in the residential area, providing people with fast and convenient information and communication services, property management functions of a safe and comfortable living environment and efficient scientific living environment, which includes security systems, equipment management and video surveillance system and information network system and other features. Residential security system is an important part of the Intelligent Community, it is the infrared through a variety of security technologies, hazardous gas detection, intrusion detection, network equipment such as video surveillance equipment, to achieve the residential real-time monitoring and management to protect residential tenants security multifunctional guard system. With the increasingly high demand for quality of life, intelligent residential security systems not only provide basic security services, also provides community environmental monitoring and other services. From the information processing model and the network structure to divide the security system from top to bottom is divided into the three-layer structure: monitoring management, security device layer and sensor layer. Monitor the management is composed by the cell types of servers and PC-based monitoring terminal for receiving various types of security equipment to send information and send various control commands, it is the combination of management information systems and the Intelligent Community, for the management of monitoring and the information is stored queries; monitoring management district data server, video server and a monitoring terminal, including data servers and video servers form the core of the security system monitoring centers, complete the record and update of relevant information. Monitoring terminal for monitoring personnel to view the security status, to prompt all kinds of danger, for the monitoring personnel, as follows: the video server for receiving and storage network camera transmit the video data, and monitor the quality of video transmission, complete video transmission statistics, management and control, and provide relevant video information query and statistical services; in the actual design data server using SQL SERVER 2000, take full advantage of stored procedures and triggers in SQL SERVER, completion of complex data in a data server update rules. Data server to save the district as a whole (such as layout, equipment information) and user information (such as sensor placement information, three-table data, etc.), while records of all kinds of alarm record and respond to treatment. Monitoring terminal to receive and display current system status (including video), and monitor the operation of the system through the data server, monitoring control and alarm response process of the staff through the data server. Layer of security equipment is all kinds of network security equipment, including network cameras, home servers and building intercom devices, various types of security information of up report and receive the control instruction down to read the status information of all kinds of sensors; security equipmentlayers, including network cameras, home servers and building intercom equipment, various types of sensors, connected through the control network interact via Ethernet and monitoring management. Security equipment inspection way to monitor sensors, and at the same time to interact through the hotline contact signal between the management and monitoring; past simple RS485 and other Line network compared in this way is not only easy, but when the network fails or equipment failure, monitoring can be found. The sensor layer is the security equipment, sensors and detectors of various types of access for up report on the detection of various types of information. In the system, monitoring, management and security equipment layer using Ethernet, the access of the sensor layer in two ways: the sensor using RS485 and other ways, access networks, networked security cameras and other equipment in the district; in the family class network via a home network access home server. In this hierarchy, not only reduces the complexity of system design and implementation, but also brought great convenience to the maintenance of the system. The security device layer and the layer between the management and monitoring system using TCP / IP as the communication protocol, mainly uses UDP to connect, to simplify which real-time video data using RTP protocol framework. Real-time video data by the network camera uses a multicast sent to the video server and the monitoring terminal; monitoring client can also be obtained from the video server through video on demand and playback of video data. System status information by the security monitoring equipment to send, data server records including outdoor ip camera status information (such as network cameras and sensor status, alarm information, and contact information) and the interior of the security state information (such as residential various types of sensor information update, alarm and status information); monitoring terminal through the data server to obtain status information of these systems. Control and process information, including video control commands to control the processing instruction. Video server based on the current state of the transmission to the network camera to send control commands to adjust the image transmission parameters; data server to the system security device sends control instructions; monitoring the end-all kinds of alarm processing and response messages are sent to the data server by The data server according to the type of instruction and content to decide whether to send control commands. In order to improve the intelligence system, to take measures of linkage processing and intelligent alarm system, as follows: linkage processing includes three aspects: when a sensor alarm and security systems at the same time several other associated alarm device state to carry out checks to ensure the reliability of the alarm to reduce false alarm rate; for a specific location sensing (detection) Alarm, security system will control the other sensor (probe) control of the zone to be monitored again to confirm danger. A typical application is when the surrounding infrared detector alerts the security system will adjust the PTZ Camera to turn to the detection of location of inspection; case of danger, through the control rules set by the Intelligent Community System management and equipment monitoring subsystem control equipment handling police intelligence. Intelligent Alarm refers to the external data interface by using a common database system to achieve multi-channel alarm when an alarm, network camera and other equipment using the network to transmit live sound and light alarm, home servers and monitoring center available through the PSTN network, telephone or SMS alarm to ensure that the outside world to receive timely and effective to alarm.
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