Analysis of the Present Situation and Application of Building Intercom System

I. Introduction to the building intercom system The characteristic of the residential community is user concentration, large capacity, unified security management, and the economic income of most areas in China is not high, so the residential security system must meet the requirements of “safe, reliable, cost-effective, centralized management”. Although there are various security systems on the market at present, there are not many products that truly meet the characteristics of the community and are suitable for residential use. Building intercom system as such products, with less connection, households are not afraid of short-circuit isolation, no indoor power supply, no power consumption in standby, no special video line, high stability, reliable performance, easy maintenance and so on.

Second, the status of the building industry intercom market The history of building intercom in China, can be traced back to the late 80s of last century, when the building intercom function is single, the market capacity is very small. However, building intercom products or systems are now integrated, networked, and personalized. There are great differences between different countries, different building structures, different application environments, and different security management requirements, especially China’s independence. Some large-scale community construction and property management, building intercom more personalized features.

Different from the simple intercom in the early stage of industrial development, based on the fact that the building intercom system is becoming more and more powerful and the integration is getting higher and higher, we propose a new concept in the industry: the building information system. Building Information System (BIS) refers to buildings or building groups installed in residential quarters, unit buildings, and office buildings. Visitors are identified by using images and voices. Various front-end sensors are used to collect data, control data, and security information. Intelligent control, control of door locks and emergency situations. Send help signals and various automatic control information to the management center. The management center can also communicate with residents through voice or data commands or text messages from the unified bus platform or the same network platform. Made device integration. The video-based intercom system is a basic platform that includes home automation systems, home information systems, home entertainment systems, and property management information systems such as security alarm systems, surveillance video systems, home appliances, and lighting controls. It is composed of various types of equipment such as host entrances, resident terminals, intermediate transmission switches, and management centers.

Building information system has covered visual intercom, simple intercom, residential alarm, IC card access control, short message release, home appliance control, video surveillance, perimeter linkage, and security due to the historical reasons of product development and product technology features. Information management and other uses or areas, and the building information system is still in the stage of product integration and rapid technological development.

The combination of the building information system and the unit's anti-theft door, residential security door, and property management office provides a convenient, safe, civilized, comfortable and intelligent lifestyle for residents and visitors. It also provides a centralized, efficient and effective property management office. The management and control platform improves the efficiency of information management and reduces the incidence of adverse events or cases.

After ten years of development, the types of intercom systems include single-family, villa-type, low-level systems, multi-layer systems, high-rise systems, intercom systems, video intercom systems, intercom visualization systems, and multi-functional visual pairs. Talk about systems, color video intercom systems, networking systems, large-scale networking systems, etc. Due to the rapid development of the housing industry and property management in mainland China, the development of building information systems has been greatly promoted, and both the products and technologies have been rapidly upgraded. As domestic manufacturers keep up with the demand characteristics of the domestic market and continuously introduce new ones, the visual intercom system has been developed into a building information system integrating security, home intelligence, and multimedia information networks. The products that started relatively late with respect to foreign manufacturers have squeezed out a long history of foreign products or forced foreign products to study the Chinese market in reverse and learn Chinese products in a short period of ten years.

III. Application of Building Intercom System in Residential Buildings With the development of real estate industry, the full digitalization of benchmarking real estate is becoming more and more rampant. Digital building intercoms are hot, and building intercom companies have linked digital, network and building intercom, TCP/ The IP building intercom technology has gradually matured and it has been put into the market. Its highly efficient and convenient features have enabled digital and TCP/IP technologies to be rapidly recognized by the market, which has opened up the essence of semi-digital intercom products and digital intercom products. Application prelude.

Why are digital building intercoms so pampered? Here, I think this has a direct connection with good performance. As we all know, the traditional analog intercom system has certain drawbacks. If the size of the cell is too large, or if there are many floors, the problem of signal ambiguity caused by too long video transmission distance will inevitably arise. At the same time, on multi-channel problems There are also congenital weaknesses that are difficult to overcome. The digital building intercom can make up for this defect and solve the problem better. The compressed and encoded audio and video digital signals can be transmitted through the networking part using the standard TCP/IP protocol. Since video, audio, and control information are all digital signals, there is basically no signal attenuation problem and it is easy to meet long-distance transmission requirements. In addition, the networked physical network uses a standard Ethernet architecture and network sharing to easily meet the requirements of multiple channels.

When it comes to digital building intercom, people always think of prices. As far as the current market price is concerned, the price of digital terminals is about two to three times higher than that of ordinary equivalent screen walkie-talkies. An Zhibao general manager of sales Shi Zhi pointed out: "The main difference is that the overall structure of the two is not the same, common visual walkie-talkie universal use of single-chip microcomputer, the operating speed and processing capacity is relatively small, the digital walkie-talkie which uses a dual-core multimedia processor , that is, RAM + DSP architecture, similar to dual-core notebook computers, single part of the cost is much higher, and like the screen, the ordinary intercom is analog screen, and the digital terminal is basically a digital screen, and this digital screen It is a touch-type human-computer interface, so the cost of this part will increase."

Although the price of digital building intercom products is higher than that of traditional building products, with the development of China's real estate industry and the advancement of the Internet of things and triple play, digital intercom is the trend of the development of the entire building intercom industry. In 2008, the industry established the Video Intercom Industry Alliance and discussed the development direction of video intercom technology at the first Alliance Summit Forum meeting. The company agreed that the trend from analog to digital is an inevitable trend. Digital technology will After being the mainstream technology of visual intercom industry, video intercom is bound to go digital.

Judging from the current situation, although digital intercom applications now account for about 10% to 20% of the entire industry, they are generally positioned at high-end properties. In terms of connection methods, the digital intercom has a simple circuit, full integrated wiring, and convenient and fast connection. From the application level, it can enhance the role of real estate grades. Most real estate developers develop digital real estate using digital terminals. The function of smart homes can be used as an extension function, leaving users to expand according to their own needs. Too high, but also improve the quality of real estate.

Digital intercom is an inevitable trend in the development of the intercom industry. Its efficient and convenient features are bound to conquer every user. By then, the entire building intercom market will present a prosperous scene. Let us wait and see!