Security system plays an important role in the community

With the development of the national economy, residents have higher requirements on the quality of life, especially for the requirements of the living space and the surrounding environment with a relatively large leap from quantity to quality. The residential community security system is based on this premise, with the new concept of residential construction. The housing construction industry is increasingly becoming a new growth point for the national economy. This concept is bound to be widely discussed, becoming more and more clear and more concrete. The security system plays an important role in the community.

Community security system composition

The community security system includes multiple subsystems such as identification management, perimeter fences, video surveillance, electronic patrols, access control, and parking lot management.

The community access identification management subsystem is mainly used to confirm the management of the households entering and leaving the households, including personnel access and vehicle access management. At present, the general situation is that non-contact smart card radio frequency cards are used as identity cards in high-end communities, and only valid ID cards are used by personnel and vehicles. In and out of the residential low-grade community is directly used to manually manage the perimeter fence to prevent the alarm subsystem perimeter fence prevention is an important requirement to achieve closed-cell management. Infrared fire alarm devices or electrostatic induction fences are generally used to form a perimeter fence line for the community. When someone illegally climbs the fence, an alarm will be triggered and the alarm signal will be notified to the security personnel in the central control room. Through this system can effectively prevent criminals from entering the community through the perimeter to reduce the occurrence of the incident. Video Surveillance Subsystem The video surveillance system is to install video surveillance cameras in the gates of the community, public places, and important locations. What happens to the surveillance is saved through the hard disk video recording system for a long period of time or for a certain period of time so that it can be used when managing queries and analyzing events. At present, some domestic cities, in the "safe city" construction will be community video surveillance system as a must-construction content into the urban safety management system. It is reasonable to believe that the residential video surveillance system will play an increasingly important role in the construction of a safe city in the future.

The electronic patrol system (online or off-line patrol) electronic patrol is a management system for community security personnel. It is divided into online and offline modes.

Online patrol is a dynamic real-time management method that enables online patrol display and management functions. Off-line patrols use electronic patrol sticks to record the work of security personnel patrolling on designated routes.

Residential unit access control and visitor video intercom subsystem unit access control management, which is usually realized with the visitor (visual) intercom system. The owner can implement “swipe card” to open the unit door, and can also operate the unit door in the household. Visitors enter the unit door.

The visitor video intercom system has now become a standard feature of smart community construction. General community construction will require the construction of a visitor intercom system, while high-end communities will require the construction of a video intercom system.

The network structure of the intercom system basically represents the topological structure of the control network for the construction of an intelligent community with Chinese characteristics. It will not only combine the current "public security" of the community with the realization of "home security", but will also play an increasingly important role in the development of the "digital home" service industry in the future intelligent community security system.

Parking lot management subsystem Community parking lot management is an important part of community public security management. At present, most of the high-end communities have implemented non-contact car-reading access to the community and parking lots. General reading distance is 5-50 meters, high-end can achieve long-distance 20-25 meters vehicle identification, do not stop to identify and enter and out of the computer to complete the charge management and other functions. At the same time, video monitoring equipment is installed in the entrances and exits of the residential car parks and inside the car parks to implement camera surveillance for vehicle access and parking.

Community Security System Development Trend With the development of society and the advancement of science and technology, the era of digital network life has come. The community security system also developed digitally to the network.

Digitization: With the development of embedded and intelligent control technologies, the intelligent community security system has evolved from an analog surveillance system to a digital surveillance system, enabling the digitization of various resources and information. Digital security equipment that integrates network communication and information processing has gradually replaced analog devices. Especially in video surveillance systems, digital video surveillance systems built using the image sensor image encoding chip microcontroller network communication chip have gradually become the mainstream. The digitalized intelligent community security system overcomes the limitations of analog surveillance systems and effectively solves the problems of limited signal transmission distance, poor anti-interference, low video picture quality, inconvenient information storage, and cumbersome queries in analog systems. , Easy installation and commissioning, easy storage, remote transmission and random retrieval and many other advantages.

At present, the development direction of intelligent community security digitization is to use image detection as the main means of alarm prevention. The pattern recognition technology enables the system to have feature recognition and detection functions, so as to effectively determine the sound and light alarm conditions of various types of illegal intrusions and fire alarms, and reduce alarms. The false positive rate. With the continuous development of new imaging technologies, the security monitoring range has also extended to the invisible range.

Networking: Networking is the key to the intelligent community security system. It is the basis for providing high quality and high reliability security services. The networking of the intelligent community security system is mainly reflected in three aspects: the sharing of various security information between security devices; the sharing and transmission of information with other systems of the intelligent community; and access to public networks such as the Internet and PSTN networks. In order to provide various types of security information to the outside world in a timely manner, a hierarchical network structure has been formed, as shown in Figure 1. The three-level prevention mechanism of society, community, and family is well implemented, and security services integrating monitoring and prevention, information management, and processing and control are realized, and the reliability and real-time performance of the system are greatly improved.

Intelligent: The intelligent community security system not only requires rapid reflection of the current environment, but also needs to actively judge all types of environmental changes and coordinate with other systems for related control and processing. The intelligence of the intelligent community security system is mainly reflected in the alarm linkage processing and pattern recognition-based detection. Alarm linkage processing means that when a device in the system detects a dangerous situation, it dispatches other types of security equipment around the perimeter to detect and comprehensively analyze the area where the danger occurs. At the same time, it cooperates with other systems of the intelligent community and notifies other systems after determining the dangerous situation. Do the appropriate processing. Pattern-based detection is the use of technologies such as biometrics and feature recognition to make full use of photodetection technology to identify various types of illegal intrusions and dangers, and to use other aids to reduce false alarm rates.