What are the advantages and applications of visual intercom?

1, simple wiring Compared with the analog visual intercom system transmitted by trunk bus system, the digital visual intercom system is much more convenient in wiring, installation and debugging. Because the digital visual intercom system uses TCP/IP to transmit sound, data, images and other signals, a network cable can solve all the problems, greatly simplifying the wiring project, making the installation and debugging of the residential intercom system simple and greatly shortening the construction period.

2. Powerful networking function When all signals are digitized, it is easy to meet the networking requirements. The indoor unit of digital visual intercom system is like a small computer, which has both high-performance CPU and DSP digital processing chip. The powerful data processing ability makes the networking function more powerful, and also provides more convenience for the integration of other security subsystems.

3. Good scalability IP networking has strong scalability. It can not only realize video intercom, but also realize multimedia information sending, broadcasting, security alarm, smart home, IP videophone, VOD on demand, image monitoring and value-added services.

If connected to the Internet, any terminal (visual interphone) can be configured, monitored, remotely upgraded and remotely read meters. It can not only meet the traditional visual intercom application, but also provide security alarm, smart home control and other functions, and become the core hub of "digital home".

4. Long transmission distance. Nowadays, the scale of community development is growing. Using solutions such as image amplifier, the transmission distance can also be extended to several kilometers, but the cost is too high. However, the video intercom system based on TCP/IP mode has no distance limit and can realize low-cost long-distance transmission.

Low comprehensive cost has always been a fixed concept in people's minds: "New technology means high price, and new products must be more expensive than traditional products." Then, as an advanced digital intercom system, must it be more expensive than the traditional analog visual intercom system? In fact, from the point of view of installation, debugging and wiring, adopting TCP/IP transmission mode can reduce a lot of investment, shorten the construction period, save wire and labor costs and be easy to maintain. Therefore, the use of digital visual intercom system has more advantages in cost.

Application of visual intercom technology

Generally speaking, there are two types of building visual intercom system: visual intercom system and networked alarm intelligent system, which can meet the different needs of single households, villas, ordinary houses, high-rise buildings and socialized residential quarters.

1, single ordinary intercom system

The system is suitable for high-rise and multi-storey buildings, and only needs intercom and electronic unlocking, and does not need networking. It consists of door host, user extension, uninterrupted power supply and electric control lock. The bus structure is adopted, and the trunk line is a three-core line, which is connected to the user as a two-core endless line through the interlayer distributor. The mezzanine distributor is used from the bus to the user extension to isolate and protect the bus, so that any extension fault or short circuit of the extension line will not affect the normal work of the system, which greatly improves the reliability and stability of the system. User extensions must be coded and interchangeable to facilitate after-sales service. The system also has direct dial and digital options.

2. Networked intelligent alarm system

The networked alarm intelligent system consists of management center, community entrance host, elevator entrance host, user extension, interlayer distributor and various alarms attached to user extension. The system adopts bus structure, the trunk line is a four-core line with a video line, and the elevator main machine is a four-core line with a video line from the interlayer distributor to the user extension.

The building networking system can be equipped with multiple residential entrance hosts, which are connected to each cascade switch through a four-core line of bus ring structure (plus a video line of visual system).

According to the configuration, the system has many functions, such as visual intercom, image monitoring, emergency alarm, automatic alarm, public security patrol punching, ic card access control and so on, and can carry out intelligent comprehensive management of the community through the computer. Each building is equipped with a stair main machine (if there are multiple entrances and exits, multiple auxiliary stair machines can be extended). The stair main machine is equipped with a four-digit LED display screen, which usually shows the building number and unit number of the stairs. When the imitator calls the resident, the room number of the resident is displayed. Every time I go to the housekeeping center, I have a record.

The visual host adopts a low-illumination high-definition camera with infrared compensation at night, so that residents can clearly see the images of visitors at night.

Each host in the community can also play the function of patrolling and punching. Each host can also choose to be equipped with a contact IC card or a contactless IC card. Residents can use IC cards to open electronic door locks. The elevator host with contactless IC card function can store thousands of IC card usage information at ordinary times, and read the information through the "all-in-one card" management module of the management center when necessary.

The user extension can be equipped with infrared burglar detector, door magnetic switch, smoke detector, fire detector, panic button and doorbell. There are three ways to remove and protect the user's extension from being stolen by the police: the extension is equipped with remote control, and the elevator host is equipped with IC card and password. The remote controller can also be used as an emergency button for emergency help, and users can get timely help no matter where they are indoors. When calling for help, the original call in the system will not be interrupted.

The management center can handle household alarm and other information and manage telephone calls, security patrol clocks in, unit electric control door is abnormal, alarm is turned on, ic card access control systems at all levels record the latest 32 items of information, connect with the property management computer, and record, query and print all kinds of information in real time through property management software. At the same time, in the visualization system, the management center can be programmed to monitor the stairwell of the community in an empty way, which has covered some functions of the community monitoring system in principle.

In short, when users choose the building visual intercom system, they must first determine their functional requirements, and then choose the specific system. After determining the system you need, you should find the manufacturer that produces the product. Users should know the manufacturer in detail, and do they have a technical defense production license? Has it passed the inspection by the public security department or relevant state units? Is the manufacturer's quality assurance system complete? Perfection of after-sales service system? Technical support? And successful demonstration projects. In particular, the system engineering of networked alarm intelligent community should be carefully selected. After the manufacturer is determined, the user will also compare the systems of various manufacturers horizontally, focusing on system engineering installation, such as wiring, installation and debugging. It is worth mentioning that whether the user extension is isolated should be an important factor in the selection.