In a broad sense, the intelligent community, using modern building technology and modern computer, communication, control and other high-tech, integrates property management, security, communication and other systems, and connects the property management office through the communication network to provide housing residents. A safe, comfortable and convenient modern living environment. In a narrow sense, it includes residential automation systems, home information service systems, property management systems, and community public service systems.
First, video surveillance system
As one of the monitoring and information means of the security status of the work area, the video surveillance system combines the internal intercom system and the public broadcasting system to respond to each other, which can reduce the work intensity of managers and improve management quality and management efficiency. As a powerful auxiliary means for modern security, the video surveillance system transmits video images or dangerous signals from various sites on the site to the main control center and sub-management room. The duty management personnel can objectively treat each other without visiting the site. The area is centrally monitored, and the situation is unified and mobilized to guide evacuation, saving a large number of patrol personnel. Many people can avoid many human factors and ensure that the properly handled solutions can be implemented in a short period of time.
Second, the intrusion alarm system
The intrusion alarm system generally consists of a detector, an alarm controller, a linkage controller, an analog display screen, and a searchlight. Most intrusion alarm systems use linear detectors. Line detectors mostly use two-way/four-way active infrared detectors to form an anti-illegal crossing alarm system. The system adopts fuzzy control technology to effectively avoid the impact of small animals, sundries, blizzards, etc. on detection alarms, and at the same time ensure instant alarms for illegal overtaking behavior of large objects and people. When the detector detects the intrusion signal, it will alarm the community property alarm center. The alarm center linkage controller opens the relevant area searchlight, issues an alarm siren, starts the video recorder, simulates the electronic screen to dynamically display the alarm area, and the alarm center monitors the computer to eject the electronic map.
Third, the access control system
The access control system is an important channel for managing smart homes. The door control system controls the movement of people and controls the behavior of people in the building and in sensitive areas. Install control devices such as card readers, fingerprint readers, PIN pads, etc. at the door, elevator, etc. In order to enter, the household must have a card or enter the correct password, or press a dedicated finger to be approved. The access control system can effectively manage the opening and closing of the door, ensuring that authorized personnel can freely enter and exit, and restrict unauthorized personnel from entering.
Fourth, electronic patrol system
The patrol system is a means by which the manager examines whether the patrol arrives at the designated location on a patrol route at a specified time. The patrol system helps managers understand the performance of patrol personnel, and managers can change the patrol route at any time through the software to meet the needs of different occasions. The patrol system is divided into wired and wireless:
The wireless patrol system consists of information buttons, patrol handheld recorders, downloaders, computers and their management software. Information buttons are installed on site, such as near the entrance of each residential building, garage, main road, etc.; patrol handheld recorder is carried by the patrol personnel on duty; the downloader is a component that connects the handheld recorder and the computer for information exchange. It is set in the computer room. The wireless patrol system has simple installation, does not require a dedicated computer, and is very convenient for system expansion, modification, and management.
The cable patrol system is that the patrol personnel send a signal to the management computer at the specified time and place to indicate normality. If the signal is not sent to the management computer within the specified time, or not according to regulations The order of the signals appears and the system will consider the exception. In this way, problems or dangers of the patrol personnel will be quickly detected.
Five, smart home security system
It is mainly based on the home burglar alarm system. It is composed of a security center management host, a home alarm, various sensors and transmission lines. The entry points are mainly doors and windows, and the sensors are placed in important places and areas of the home, allowing the owners to live in a safer and more comfortable environment. Various types of sensors are introduced as follows: window magnetic, magnetic switch, gas leakage alarm, smoke alarm, emergency button and other security systems are used in the home, in each home owner's home is equipped with infrared probe, window magnetic switch, sense Tobacco probe, emergency alarm button, etc., each door entrance is set up with a door host, and a management host is set up in the security center. When a guest visits, press the outdoor button or the respondent's room number, the indoor room will ring the ringing tone, and the indoor unit's display will automatically open, showing the visitor's image and outdoor situation, the owner and the guest are right. After talking about the call, you can use the unlock button of the indoor extension to remotely control the door electronic lock to let the guest enter. After the guest enters the gate, the door will automatically close.
In addition, through cell networking, centralized security alarm management for all users who install the home security system in the entire cell can be realized. Each family's security system can transmit alarm signals to the management center through the bus. The administrator can confirm the location and type of the alarm, and the computer also displays some information related to the residents for the security personnel to timely and correctly receive the alarm. deal with.
Sixth, the surrounding defense department
The perimeter anti-range bar alarm system mainly monitors the surrounding conditions of the building and prevents illegal intrusion. It is the first line of defense for the anti-theft alarm system and is also a very important line of defense.
The perimeter guard sensor can detect the intruder as soon as it enters the zone and alert you before it approaches the protected person and the protected property. An effective outdoor safety system can reduce the risk of theft, reducing damage and personal injury as a return on equipment investment.
Seven, video intercom system
The traditional analog video intercom system is composed of a management center, a visual outdoor host, and a visual indoor extension power supply. It can realize three-way calling, building intercom, image monitoring, comprehensive alarm, open door lock, alarm memory, and comprehensive management of the center. The system adopts 485 wiring transmission mode. According to different requirements, external magnetic, infrared, smoke, gas probe and computer center, workstation and "110" alarm center can be connected to implement intelligent community management.
The digital network intercom system uses network signal transmission. In addition to all the functions of the above analog video intercom system, it also has free to make video calls (VIOP) through the network, dial PSTN calls (ie ordinary calls), and have security alarms. , send and receive E-MAIL, get weather forecast, cell information announcements and other information release, multimedia advertising value-added services and other functions.
Eight, intelligent community security common problem dissection
There are always some problems in the intelligent operation of the community, such as design flaws, problems in installation, and improper use. Let's take a look at the common problems and solutions!
1. The line marking is disordered or unmarked during the integrated wiring process.
All system wiring is included in the integrated wiring here. Wiring system engineering is a part of the whole project with long construction period and large manpower input. It is also an important link in the whole system. It is mostly concealed in the construction of modern community, and all are permanent links.
In the wiring, there is often a phenomenon that the line is marked with confusion or even no marking, which leaves no small trouble for the installation, commissioning and maintenance of the project. The line is not marked when the equipment is installed and debugged, and the manpower must be measured twice to complete the line. Still unidentified and even unmarked will cause difficulties in maintenance work. Therefore, each line must be clearly marked during the wiring process, which not only saves installation costs, but also facilitates engineering installation and debugging.
The reason for this kind of site is mostly caused by the incomplete management of the project. The solution is to provide comprehensive training for the construction personnel and strict requirements during construction.
2. There is no waterproof and sun protection measures at the outdoor wiring terminations.
If the line needs to be terminated outdoors, it must be waterproof and sunscreen to delay the service life of the system and system stability.
The line terminations are prone to aging in the absence of waterproof and sunscreen treatment measures, resulting in instability of the system, resulting in high repair rates and system failures even when maintenance is not timely.
Solution:
1. It can be terminated indoors in the place where the indoor termination line is used. Even if some lines are extended, the hand-held wiring can be used in the bus system;
2. The outdoor termination part can be sealed to delay aging. The disadvantage of this method is that it is inconvenient in system maintenance and line maintenance. If the line needs to be dismantled, it must be resealed.
3. The outdoor wiring box can be added, and all the lines terminated at the outdoor end are connected to the wiring box. This method not only solves the problem of waterproofing and sun protection of the outdoor terminal, but also facilitates maintenance.
3, the intercom host installation height is not suitable
Most of the intercom host installations are based on the bottom of the mainframe 1.5 meters from the ground, but because the height of the mainframes of different manufacturers are different, the height of the specific installation must be based on the entity, and should be based on the height of the camera. In order to make the visitor more clearly visible on the indoor extension. Some community units have steps in front of them, which results in the height of the visitor's station is not the height of the unit door department frame, but to the next or even two steps, so the height of the installation position of the host should be fully considered. Happening.
The intercom host is not rainproof. Some hosts are installed on the wall of the unit door. The main unit may be exposed to the outside due to the small ceiling of the building, which may cause the sun and rain of the main unit, which may affect the stability and use of the equipment. life.
Solution:
1. The door machine can be installed on the unit door, so that the host will not burst outside the canopy;
2. If the main unit must be installed on the wall, the size of the canopy can be increased or the protection device can be added to the main unit.
4, the same line of the line and the strong circuit in the video monitoring system
In video surveillance wiring, there will often be a phenomenon of parallel or even the same pipeline with a strong electric line. This phenomenon is mainly caused by poor design and irrational design, but it is not that we can arbitrarily route in this case. As long as we work hard in the construction, but the stability and reliability of the system will be improved, otherwise the monitoring image will appear severe distortion.
Solution:
1, the use of shielding effect is better or even double shielded cable;
2. Even in the same pipeline, there may be multiple conduits, and do not route with the strong circuit in the same conduit;
3, especially in the elevator wiring, because the elevator is a strong power, the impact is greater, we must strive for the distance from the strong circuit, even a centimeter will make the image signal several times better;
4. Increase anti-jamming equipment.
5. Exposure of household privacy in video surveillance systems
The monitoring of the community is easy to see the home of the household, the privacy of the owner will be exposed unconsciously, if there is video transmission of unwarranted transfer, it will cause great harm to the owner, and may even cause a lawsuit.
Solution:
1. Install the appropriate location. The cameras of the community should be installed mainly in public places such as squares and traffic trunks;
2. The camera should avoid facing the direction of the house.
6, the parking card reader location is not suitable for installation
Nowadays, the card readers in the market have two kinds of ID and IC. The readable distance ranges from 10 cm to 10 meters. For the medium and long distance readers, because the card reading distance is long, the general driver does not need to take the card, just put the card. In the car waiting for the car to pass the card reader will automatically read the card, and for a 10 cm close-range card reader, the driver must shake the window to take out the card before the card reader to brush the card reader to collect data Therefore, the card reader must be installed in a position that is very accessible to the driver. Due to the restrictions on the site conditions, some vehicles can't turn in and out when reading cards, and they can't read cards smoothly when they turn in and out, so that drivers have to get off the bus to swipe cards, which brings a lot of inconvenience to the owners. Solution: Fully inspect the site and choose a suitable and reasonable location to install parking management equipment.
7, the perimeter defense system is installed as a normally closed mode alarm
The general alarm mode can be divided into two types, one is the normally open mode alarm, and the other is the normally closed mode alarm, but the normally closed mode alarm is not suitable for application in the perimeter defense system, because the normally closed mode alarm is normally open. In the normal state, when the signal line is disconnected due to some factors, the system still prompts the normal state, and does not alarm, and the normally open mode alarm will alarm as long as the line is disconnected, and the system automatically detects the object, regardless of The choice of which type of alarm has its advantages and disadvantages, but the line break is much more likely than the short circuit, so I suggest that the normally open mode alarm in the perimeter defense system is more suitable.
The electronic patrol route is not suitable for electronic patrols, which are divided into wired patrols and wireless patrols. Because wireless electronic patrols have many advantages such as easy installation, simple maintenance, and stable system, they have gradually replaced traditional wired patrol systems and bad patrols. More lines will make the patrol staff distracted. It may cause the patrol personnel to enter the lawn to reach the patrol point, especially for the patrol personnel in the rain and snow weather.
Solution:
1. The patrol line should be designed and installed with S-type lines, and strive for no dead ends;
2. The patrol point should be installed in the place where the patrol personnel can easily reach, usually in the front of the roadside and the unit door.
8, the home network alarm system, the infrared detector is facing the window
The home network alarm system brings a sense of security to the residents, but more false positives will make the residents feel overwhelmed. In addition to the selection of root products, the level of false positives is closely related to the installation of equipment. The anti-theft devices installed in the home are mostly infrared detectors. If the infrared detectors are installed, the devices that face the windows and have a large temperature change will have more false alarms. The problem in the installation is that the effective range of the detector reaches the outside of the window, so that outdoor environmental factors cause more false positives.
Solution: Orient the detector to a stable position in the indoor environment.
There will always be such problems during the installation and commissioning process, but we should strive to reduce these problems so as to avoid more problems and difficulties in future use and maintenance.
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