Label: video intercom single
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The residential intercom system has experienced more than 20 years of development. From scratch, from non-visual to visual, from black and white to color, it has become a terminal device that enters the ordinary family after TV and telephone. At present, the entire market is still dominated by analog video intercom system products, but as the scale of community construction is growing, from hundreds of households to thousands or even tens of thousands of households, the number of households and the expansion of the area New requirements have been put forward for the technology and functions of the analog video intercom system, and the product technology and functions have been severely tested.
Digital video intercom advantage
First, the wiring is simple compared to the analog video intercom system transmitted by the dry bus system. The digital video intercom system is much more convenient in terms of wiring and installation and debugging. Because the digital video intercom system uses TCP/IP to transmit signals such as sound, data and image images, a network cable can solve all problems, greatly simplify the wiring project, and make the installation and debugging of the residential intercom system change. It is simple and the construction period is also greatly shortened.
Second, the networking is powerful When all the signals are digitized, it is easy to meet the networking needs. The indoor video of the digital video intercom system is like a small computer. It has both a high-performance CPU and a DSP digital processing chip. The powerful data processing capability makes the networking function powerful and provides more integration for other security subsystems. More convenience.
Third, the expansion of good IP networking has a strong scalability, it can not only achieve video intercom, but also enable multimedia information transmission, broadcasting, security alarm, smart home, IP video phone, VOD on demand, image monitoring and Value-added services and other functions.
If you access the Internet, you can configure, monitor, remotely upgrade, and remotely read any terminal (visual walkie-talkie) on the Internet. It can meet the traditional video intercom application, and can provide various functions such as security alarm and smart home control, and become the core hub of the "digital home".
Fourth, the transmission distance is long now the community development scale is getting bigger and bigger, using image amplifiers and other solutions, can also extend the transmission distance to a few kilometers, but the cost is too high. The video intercom system based on TCP/IP has no distance limitation and can realize low-cost long-distance transmission.
V. Low overall cost has always been a fixed concept in people's minds: “New technology means high prices, new products must be more expensive than traditional products.†So, as a leading digital intercom system, it must be better than Is the traditional analog video intercom system costly and costly? In fact, from the point of view of installation, debugging, and wiring, TCP/IP transmission can reduce a small investment, and the construction period is shortened, saving wire. And labor costs, easy to maintain, therefore, the use of digital video intercom system, cost advantages.
Video intercom technology application
The building video intercom system generally includes a visual intercom type and a networked alarm intelligent type, which can meet the different needs of different occasions such as single households, villas, ordinary houses, high-rise buildings and social residential quarters.
Single ordinary intercom system
The system is suitable for high-rise, multi-storey buildings that require only intercom and electronically controlled unlocking and do not require networking. It consists of a door host, a user extension, an uninterruptible power supply, and an electronic lock. Adopting the bus structure, the main line is a three-core line, and the two-core non-polar line connection is transferred to the user through the interlayer distributor. The bus-to-user extension uses a layer-and-question distributor to isolate and protect the bus, so that any extension fault or short-circuit of the extension line does not affect the normal operation of the system, greatly improving the reliability and stability of the system. The user extension must be coded, the extension is universally interchangeable and convenient for after-sales service. The system also has direct call type and digital type to choose from.
Networked alarm intelligent system
The networked alarm intelligent system consists of a management center, a cell entrance host, a ladder host, a user extension, an inter-layer distributor, and a user extension with various types of alarms. The system adopts a bus structure, the main line is a four-core line, and a video line is added. The ladder host is connected to the user's extension through a layer-to-layer distributor and a video line is added to the four-core line.
The building networking system can be configured with multiple cell entrance hosts, and the four-core cable (additional video cable of the visual system) is connected to each ladder converter by a bus-type ring structure.
The system has various functions such as visual intercom, image monitoring, emergency alarm, automatic alarm, security patrol punching, IC card access control, etc. according to the configuration, and can comprehensively manage the community through the computer. Each building is equipped with a ladder host (multiple sub-ladders can be expanded when there are multiple entrances and exits). The ladder host is equipped with four large LED displays, which usually display the ladder building number and unit number. When the imitation customer calls the household, the household number is displayed. Every time you have a record of the household's access management center.
The visual host uses a low-light, high-definition camera with infrared compensation at night, allowing residents to clearly see the visitor's image at night.
Each host in the cell can also perform a patrol punch function. Each host can also choose to be equipped with a contact IC card or a contactless IC card. The resident can use the IC card to open the electronically controlled door lock. The ladder host with the contactless IC card function can store thousands of units. The information about the IC card is used to read the information through the Management Card "One Card" management module when needed.
The user extension can be equipped with an infrared anti-theft detector, a magnetic switch, a smoke detector, a fire detector, an emergency button, and a doorbell. There are three ways to disassemble and arm the user's extension burglary: the extension is equipped with a remote control, an IC card with a ladder host, and a password. The remote control can also be used as an emergency button for emergency help, and users can get timely help anywhere in the room. The original call in the system will not be interrupted during emergency help.
The management center can be processed by the household alarm and other information and management calls, security patrol punches, unit electronic control door abnormalities, open alarms, IC card access control systems of all levels, can record the latest 32 items, connect to the property management computer, through the property management software Record, query and print various information in real time. At the same time, in the visual system, the management center can program the cycle monitoring of each ladder in the cell when it is closed, and in principle, some functions of the community monitoring system are covered.
In short, when users choose a building video intercom system, they should first determine their own functional requirements, and then choose a specific system. After the system you need is determined, you should then find the manufacturer that produced the product. The user should have a detailed understanding of the manufacturer, is there a technical production production license? Has it passed the inspection of the public security department or the relevant national unit? Is the manufacturer's quality assurance system complete? The after-sales service system is improved? The technical support and successful application Demonstration works, etc. In particular, the system engineering of the networked alarm-type intelligent community should be carefully selected. After the manufacturer determines that the user should also make a horizontal comparison of the manufacturer's system, the focus is on system engineering installation considerations, such as wiring, installation, commissioning, and so on. It is worth mentioning that whether the user extension is isolated should be an important factor in the choice.
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