Construction of Security System in Intelligent Community
Brief introduction: This paper introduces the security system solution of intelligent community in detail, as well as the design principle and scheme description.
Keywords: intelligent community, security system, solution
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Section 1 Overview of Community Security System
With the development of modern science and technology, monitoring and perimeter prevention system has become an indispensable part of intelligent community. XX Shangqu is a modern intelligent residential district. In order to ensure the property and personal safety of residents, and to prohibit or deal with emergencies quickly and effectively, this monitoring and perimeter prevention system scheme is specially designed.
1. 1 design basis and design principles
1, People's Republic of China (PRC) national standard * * * "Technical specification for civil closed-circuit monitoring TV system engineering" GB50 198-94.
2. People's Republic of China (PRC) national standard "Code for Communication Design of Industrial Enterprises".
Note: This specification is used for line laying.
3. People's Republic of China (PRC)'s safety industry standard "Safety Prevention Engineering Procedures and Requirements" GA/T 75-94.
General design principle of 1.2 system
The rationality of 1.2. 1
This is the basic principle of system design, focusing on perimeter prevention and eliminating community dangers; Emphasize holistic prevention, that is, community-centered (not household-centered) prevention; Three-dimensional prevention, a combination of various preventive measures, mainly consider setting up an infrared intrusion detection system and a TV monitoring system at the boundary of the community, setting up an omni-directional adjustable focus high-definition camera at the main entrance of the community, and the minimum illumination should be 1-3LUX to ensure its good night vision effect, and setting up a super wide-angle camera at the entrance of the unit door and garage to cover the whole entrance area; And through its video recorder with long time lag, the latest data can be played back to the pictures taken by any camera at will. Cameras in the garage are equipped with monitoring heads to ensure that people can call the police in time when they are damaged. In a word, the design of the system is reasonable and optimal on the basis of striving for no dead angle and no waste of cameras.
1.2.2 Reliable and practical
From the perspective of cost performance, the key components of the system are completely made of the products of world-renowned manufacturers, which ensures the reliability of the whole system. At the same time, considering the requirements of perfect function and simplified operation, the system can respond quickly and correctly when dealing with emergencies, which improves the efficiency of security work.
1.2.3 modular design
The modular design of this matrix system facilitates the upgrade and expansion of the system in the future. Even in the future expansion, there is no need to replace the existing equipment, only need to upgrade the software or add hardware, so as to ensure the continuity of the system.
The main functions and implementation levels of this system:
(1) is connected with the alarm system, which triggers video recording and automatically pops up the image of the camera in the alarm area.
(2) You can switch to view all images in the central control room. There is no interference between images during image switching.
(3) The system provides time, date, place and camera number prompts, which can be marked on the video tape for easy analysis and processing.
(4) The system can arbitrarily select the designated camera area, which is convenient for key monitoring or automatic tour display of multiple camera areas within a certain range.
(5) The matrix system has the function of group synchronous switching. All or part of the cameras in the system can be divided into several groups, and each group of camera images can be switched to a group of monitors at the same time.
(6) Auxiliary control can be set where necessary, and all images can be switched and controlled on the monitor through the auxiliary control keyboard.
(7) When configuring the system, you can decide which part of the system each user has the right to enter: which cameras users can watch; And which cameras can be controlled; Users can use their own keyboard to manually operate which relays (connected to the periphery), which VCRs and multi-screen splitters.
Section 2 Technical Scheme for Safety Monitoring
2. 1 composition of closed-circuit television system
Closed-circuit television system is mainly composed of front-end, back-end and transmission.
2. 1. 1 front-end equipment
The front-end equipment is mainly responsible for signal acquisition. The main equipment includes camera, lens, protective cover, ball machine, decoder and bracket.
2. 1.2 backend equipment
The function of the back-end equipment is to process the signals collected by the front-end. It mainly includes video signal switching, display, recording and other main functions. The equipment mainly includes: control keyboard, screen wall, matrix control host, console, video recorder, etc.
All back-end equipment such as control equipment and display records are placed in the central control room. The control device is a matrix control host. The display device is a dual-purpose machine. The recording device is a video recorder with a long time lag. In addition, additional control keyboards and monitors are provided where necessary.
2. 1.3 linkage with alarm
The networking of CCTV and alarm adopts the hardware networking mode, that is, the main matrix receives the alarm signal from the relay interface board of the alarm host, drives the related camera, and automatically pops up the alarm screen on the monitor.
2.2 Description of CCTV system equipment
2.2. 1 camera
The ES 100/C black-and-white camera produced by Huiyou Company in Taiwan Province Province is adopted. With its 440,000 effective pixels and OCML technology, ES 100/C provides high definition of 470 lines and extremely high signal sensitivity, and the signal-to-noise ratio exceeds 50dB. Even in the case of the lowest illumination, ES 100/C can provide high-contrast and high-quality images to ensure its good target recognition ability.
ES 100/C has a DSP (Digital Signal Processor), which can enlarge the object by 2 times. This function is owned by the machine itself and has nothing to do with the choice of lens. In the case of backlight, it can automatically adjust the brightness of the regional picture, and even where the brightness changes with time and sunshine, it can obtain realistic images. Its ALC function can adjust the light and shade, and the automatic aperture lens is suitable for any occasion with this function.
Its specific specifications are as follows:
Imaging equipment: 1/3 "line transmission CCD device.
Effective pixel: 795 (horizontal) X596 (vertical)
Signal system: PAL system
Synchronization system: internal synchronization/linear locking
Horizontal resolution: 470 lines
Minimum illumination: 1.5LUX
Video output: 1VP-P, 75 ohms
Signal to noise ratio: 50db
Power supply: DC 12V
Power consumption: 220mA
Working temperature:-10℃ to 50℃
Working humidity: 30% to 90%
Weight: 3 10g
Size: 125X50X50 (length/width/height) mm (with lens)
Video recording equipment
Considering that if an accident happens, it is necessary to analyze, collect evidence and archive the scene, we have configured a time-delay video recorder and a matrix control host in the system. The matrix control host has a built-in 16 screen divider, which adopts the CR 15 model of MOLYNX in the United States. The 24-hour delay video recorder adopts STLV-24 made in North Korea. The machine has high-sensitivity mechanical structure, recording tips to ensure safe recording, extremely simple operation, emergency and alarm recording, screen menu display settings and other functions.
Section III Description of Technical Scheme for Perimeter Prevention and Electronic Patrol System
The perimeter prevention system monitored by Andingbao computer can integrate all alarm points and patrol points on the same system and bus, and monitor all alarm points and patrol points in real time on computer software. All alarm points can be randomly divided and their collective or individual defenses can be controlled. For patrol points, the patrol position and patrol personnel can be judged, the system can automatically implement the patrol plan, and can issue a warning in time to remind the personnel on duty when there is an error in patrol.
The alarm control host receives the manual and automatic alarm signals sent by the alarm button at the key position and the alarm detector, at the same time, it sends a trigger signal to CCTV to process the alarm and trigger the alarm signal, and starts the lights in the alarm area through the action of the relay, and is connected with the automatic alarm system such as "1 10" telephone through the automatic dialer. The networking mode of the system is very flexible, which can make use of computer local area network, telephone line and wireless reception to give an alarm.
The alarm host, alarm computer and main control keyboard are placed in the central control room, and each subsystem can be disarmed independently or controlled centrally by the main control keyboard through configuration. The patrol system is to patrol the keyboard at the patrol point, and judge the patrol point and patrol personnel code according to the signal sent back by the patrol keyboard. Alarm and patrol personnel can draw an electronic map, display all alarm points on the map, jump between maps, and set up the function of "computer management" to automatically deploy and disarm each alarm subsystem at regular intervals. Thus, the prevention system of internal looseness and external tightness is truly realized.
3. 1 Description of perimeter defense system equipment
3.1.1.4140xmpt2 host
4 140XMPT2 is the largest mainframe of American Andingbao Company, and its main features are as follows:
It can be expanded to 87 sectors, and can be mixed with four wires, buses and wireless connections. All sectors can be programmed as one of more than ten sectors. Nine use protection zones are fixed on the motherboard, and whether to use online resistance-free monitoring mode can be set. The two-wire connection in coding mode is used to monitor each probe in real time. All bus probes are connected in parallel, which is convenient to install and has a conventional sector expander. It can be divided into 8 subsystems, and each subsystem can be controlled by 16 keyboards at most. And the relationship between subsystems can be set, that is, one subsystem can be controlled by other subsystems.
Users can customize temporary scheduling, set automatic deployment and defense time, and automatically control relay switches. Users can group into the system according to the time limit.
4204 relay module can provide 16 relay output, and dozens of driving modes can be programmed. Can use 128 password, divided into 7 levels of control, can be divided into 8 groups.
3. 1.2 6 139 control keyboard
English variable character LCD display keyboard, two lines display with address code. You can set and display the name of each sector and subsystem. Can be deployed to prevent operations. When an alarm is given, it sounds like a peak, and the alarm position is displayed.
3. 1.3 4 190WH bus expander
You can set two consecutive address codes, that is, you can extend two defense zones.
3. 1.4 FG perimeter alarm (fence)
FG350 is a microwave detector for intruders outside residential areas, specially designed to provide 24-hour peripheral monitoring. The basic components include a transmitter and a receiver, which can be as far apart as 200 meters. Intruders will be detected when they pass through the cigar beam between the receiver and the transmitter. FG350 components are placed around the protected site in an overlapping manner to ensure continuous detection.
3.2 alarm software
The alarm software has the following functions:
WINDOWS interface, multimedia working mode, simple and intuitive user operation.
An electronic map can be attached. The original display panel technology allows users to set alarm status, and can open multiple "display panels" at the same time, showing all kinds of user status at a glance.
Users are rich in information, and can define multiple contacts, early warning plans, the location and name of each defense zone, map positioning, user drawing defense zone maps and other functions.
Alarm signals are processed by levels, and different levels of alarm information can be set to be automatically processed by the computer.
Users are allowed to change various display/print formats, and the display mode and content of alarm information are customized by users.
Data can be backed up and restored with different contents, and all backed-up files can be accessed and restored conveniently through indexes.