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Analysis of seven technologies and common problems such as intelligent community intercom
Smart community, in a broad sense, is the use of modern building technology and modern high-tech computer, communications, control and other high-tech, integrated property management, security, communications and other systems, and through the communication network to connect the property management office, to provide residential households A safe, comfortable and convenient modern living environment. In a narrow sense, it includes home automation systems, home information service systems, property management systems, and community public service systems.
Seven Smart Security Technology
First, closed-circuit monitoring system
Closed-circuit monitoring system is one of the monitoring and information means of the security status of the work area. Combined with the internal intercom system and the public broadcasting system, it can reduce the work intensity of management personnel and improve management quality and management efficiency. The closed-circuit monitoring system is a powerful auxiliary tool for modern security. It transmits video images or dangerous signals from various sites on site to the main control center and sub-management room. The on-duty management personnel can objectively analyze the scenes without visiting the site. Regional centralized surveillance, found that the situation was unified mobility, guiding evacuation, saving a large number of patrolling personnel, fewer people can avoid many human factors, to ensure the implementation of the program properly handled in the shortest time.
Second, the intrusion alarm system
The intrusion alarm system is generally composed of a detector, an alarm controller, a linkage controller, an analog display, and a searchlight. Most intrusion alarm systems use line detectors. Line detectors use two-way/four-way active infrared detectors to form an illegal crossing alarm system. The system adopts fuzzy control technology to effectively avoid the influence of small animals, sundries, and snowstorms on the detection and alarm, and at the same time guarantees an immediate alarm for the illegal overturning of larger objects and people. When the detector detects the intrusion signal, it will alarm the residential property alarm center, and the alarm center linkage controller will open the relevant area searchlight, issue an alarm siren, start the video recorder, and simulate the electronic screen to dynamically display the alarm area. The alarm center monitoring computer can pop up the electronic map.
Third, the access control system
The access control system manages the important channels of smart homes. The gated system can control the access of personnel, and can also control the behavior of personnel in buildings and sensitive areas. Install control devices such as card readers, fingerprint readers, and password keypads at building entrances, elevators, etc. In order for a tenant to enter, he 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 doors to ensure that authorized personnel can freely access and restrict the entry of unauthorized personnel.
Fourth, electronic patrol system
The patrol system is a means by which a manager checks whether the patroller arrives at a designated place on a patrolling route at a specified time. The patrol system helps managers understand the performance of patrollers, and managers can change patrol routes at any time to meet the needs of different occasions. Patrol system is divided into wired and wireless:
The wireless patrol system consists of information buttons, patrolling handheld recorders, downloaders, computers and management software. Information buttons are installed on the site, such as in the vicinity of the doorways of residential buildings, garages, and other major roads, etc.; patrol handheld recorders are carried by patrol personnel on duty; downloaders are components that connect hand-held recorders and computers for information exchange. It is set in the computer room. Wireless patrol system has a simple installation, does not require a dedicated computer, and the system is very convenient for expansion, modification, and management.
The cable patrol system is a patrolling officer sending a signal to the management computer at the specified time and place on the specified patrol route to indicate normality. If the signal is not sent to the management computer within the specified time, or if it is not in accordance with regulations The signal appears in the order, and the system will consider it as abnormal. In this way, the patrol personnel will soon be aware of problems or dangers.
V. Smart Home Security System
Mainly home burglar alarm system, it is composed of security center management host, home alarm, various types of sensors and transmission lines. The entry points are mainly doors and windows. The sensors are deployed in important locations and areas of the family, allowing the owners to live in a safer and more comfortable environment. All kinds of sensors are introduced as follows: window magnetic, magnetic switch, gas leak alarm, smoke alarm, emergency button and other security systems are used in the home, in each home owner's home installed infrared probe, magnetic door window magnetic switch, Smoke detectors, emergency alarm buttons, etc. Each entrance to the unit is equipped with a host computer at the entrance, and a set of management hosts is set up at the security center. When a guest visits, press the outdoor button or the room number of the respondent, and the room indoor unit will send a ringing tone. At the same time, the screen of the indoor unit will be automatically turned on to display the image of the visitor and the outdoor situation. The owner and the guest Talk about the call, confirm the identity through the indoor extension of the unlock key remote control electric gate to allow guests to enter, the guests enter the door, the door automatically closed.
In addition, through cell networking, centralized security alarm management can be implemented for all users who install the home security system in the entire cell. Each home security system can send alarm signals to the management center through the bus. The management personnel can confirm the location and type of the alarm. The computer also displays some information related to the households so that the security personnel can promptly and correctly answer the alarms. deal with.
6. Perimeter department
The perimeter fence alarm system mainly monitors the surrounding conditions of buildings and prevents illegal intrusion. It is the first line of defense for the anti-theft alarm systems and is also a very important line of defense.
Perimeter protection sensors can be detected as soon as the intruder enters the zone, and alert them before they approach the protected person and protected property. An effective outdoor security system can be used as a return on equipment investment by reducing the risk of theft and reducing damage and personal injury.
Seven, video intercom system
The traditional analog video intercom system consists of a management center, a visible outdoor host, and a visual indoor extension power supply. Three-way calls can be achieved, building intercom, image monitoring, integrated alarm, unlock the door, alarm memory, integrated management of the center. The system adopts the 485 cabling transmission method. According to different requirements, it can be connected with magnetic sensors, infrared sensors, smoke detectors, gas probes, and computer centers, workstations, and “110†alarm centers to implement intelligent community management.
The digital network intercom system adopts network signal transmission. In addition to all the functions of the above analog video intercom system, it also has the ability to make free video calls over the Internet (VIOP), make PSTN calls (ordinary calls), and provide security alarms. , Send and receive E-MAIL, access to weather forecasts, community information announcements and other information release, multimedia advertising value-added services and other functions.
Intelligent Community Security FAQ
Community intelligence will always appear in one or another kind of problems during its use and operation. These include design flaws, problems with installation, and improper use and other factors. The following is a summary of common problems and solutions!
Inconsistent or unmarked line markings in the integrated wiring process
Here all system wiring is incorporated into the integrated wiring. The wiring system project is the longest construction cycle in the entire project, and the largest amount of manpower investment. It is also the most important part of the entire system. In the construction of modern communities, it is mostly concealed projects and they are all permanent links.
In the wiring, there is often a phenomenon that the line marking is disordered or even not marked, leaving a lot of trouble for the installation, debugging and maintenance of the project. The line is not marked when the equipment is installed and debugged, it must be used twice to manually measure the line, after the completion of the project. If the label is still not marked or even unmarked, it will cause difficulties for the maintenance work. Therefore, each line must be marked clearly in the wiring process. This will not only save installation cost, but also facilitate installation and debugging of the project.
The reasons for this kind of site are mostly caused by the insufficiency of engineering management. The solution is to provide all-round training for construction personnel and strict requirements in construction.
Outdoor wiring termination without waterproof sunscreen
Lines that need to be outdoor terminated must have waterproof and sun-protecting measures to delay the system's service life and system stability.
The end of the line is susceptible to aging due to the absence of waterproof and sun-protection measures, resulting in instability of the system, resulting in a high rate of return repair and even causing system defects when the maintenance is not timely.
Solution:
1, in the indoor termination of the line as much as possible in the indoor termination, even if the extension of some lines, the bus system can be hand-in-hand wiring;
2. The outdoor termination part can be sealed to delay aging. The disadvantage of this method is that it is inconvenient during system maintenance and line maintenance. If it is necessary to dismantle the line, it must be resealed.
3, can increase the outdoor wiring box, all the outdoor termination of the line into the wiring box termination, this method not only solves the problem of outdoor termination waterproof sunscreen, and easy maintenance.
Intercom host installation height is not suitable
Most intercom host installations are based on the bottom 1.5m of the host. However, because the heights of the hosts are different from each other, the height to be installed must be based on the entity. The height of the camera should be used as the standard. Only in the indoor extension can visitors be seen more clearly. Some cell units have a ladder in front of the door, which causes the height of the station where the visitor is not the height of the bottom door of the unit door, but the next or even two steps, so the height of the host installation site must be fully considered Happening.
Intercom mainframe is not rainproof. Some hosts are installed on the wall of the unit door. The host may be exposed due to the small canopy of the building body. This may cause the host to expose to the sun and rain, thereby affecting the stability and use of the equipment. life.
Solution:
1. The door machine can be installed on the unit door, so that the host can not burst out of the canopy;
2. If the host must be installed on the wall, it can increase the size of the canopy or add protective devices to the host.
Closed-circuit monitoring system in the same line and strong circuit
In the closed-circuit monitoring and wiring, the phenomenon of parallel and even the same pipeline with the strong electric circuit often appears. This phenomenon is mainly caused by poorly designed and unreasonable design, but it is not that we can arrange any wiring in this case. As long as we strive to strive for construction, we can still increase the stability and reliability of the system. Otherwise, the monitoring image will be seriously distorted.
Solution:
1, the use of better shielding or even double shielded cable;
2. It is possible to have multiple line tubes even in the same pipeline, and do not wire with strong circuits in the same line tube;
3, especially in the elevator wiring, because the elevator is a strong power, greater impact, we must strive for distance from the strong circuit, even if it is a centimeter will make the image signal several times better;
4, increase anti-interference equipment.
Exposure of household privacy in CCTV systems
The monitoring of the community is very easy to see in the homes of the residents. The privacy of the owners will be unknowingly exposed. If video data is transferred unjustly, it will cause great harm to the owners and may even cause a lawsuit.
Solution:
1. Install a suitable location. The cameras in the community should be installed mainly in public places such as squares and traffic arteries;
2, the camera should avoid facing the direction of the house.
Parking card reader location not installed
At present, readers in the market are ID and IC. Readable distances range from 10 to 10 meters. For medium-to-long-distance readers, the distance between readers is relatively long. Normal drivers do not take the initiative to take the card. In the car waiting for the car next to the card reader will automatically read the card, and for the 10 cm proximity card reader, the driver must roll down the window out of the card in front of the reader to brush it to the reader to collect data , so the reader must be installed in the driver's most accessible position. In some quarters, due to site conditions, vehicle readers cannot turn in and out. Turning in and out cannot read cards properly, so that drivers must walk out of the car to swipe their cards. This brings a lot of inconvenience to owners. Solution: Fully inspect the site and choose the right location to install the parking management equipment.
Perimeter protection system installed as normally closed 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. However, the normally closed mode alarm is not suitable for the perimeter protection system because the normally closed mode alarm is normally open. In the normal state, when the signal line is disconnected due to some factor, the system still prompts for a normal state and does not alarm, and the normally open mode alarm will alarm whenever the line is disconnected to achieve the purpose of automatic detection of the system. The choice of which type of alarm has its advantages and disadvantages, but the line break is much greater than the chance of short circuit, so I suggest that the normally open mode alarm in the perimeter protection system is more appropriate.
The electronic patrol route is not suitable for electronic patrols, including cable patrols and wireless patrols. The wireless electronic patrol has many advantages such as easy installation, simple maintenance, and stable system. It has gradually replaced the traditional cable patrol system and has caused poor patrols. More lines will distract the patrolling staff. The patrol personnel may have to go through the lawn to reach the patrol point, especially for the patrol personnel in rain and snow.
Solution:
1. The patrolling line should be designed and installed with S-type line to fight for no dead ends;
2. The patrolling point should be installed in a place easily accessible by patrolling personnel, usually at the roadside, in front of the unit entrance, and so on.
Home networking alarm system infrared detectors facing the windows
The home-networking alarm system brings a sense of security to the households, but more false alarms can cause residents to be bothered. The level of false positives is not only related to the selection of the root product, but also has a close relationship with the installation of the equipment. Most of the anti-theft devices installed in the home are infrared detectors. If the installation of infrared detectors faces the windows and the electrical appliances with large variations in temperature, there will be more false alarms. The most common problem in installation is that the effective range of the detector reaches the outside of the window, so that outdoor environmental factors cause more false alarms.
Solution: Make the detector toward a stable indoor environment.
In the process of installation and debugging, there will always be such problems, but we should strive to reduce the occurrence of these problems, so as to avoid more problems and difficulties in the future use and maintenance. (Text / HC Security Network)