Through the building automatic control system (hereinafter referred to as small BA system or narrow BA system), advanced computer control technology, management software and energy-saving system program are adopted to make the equipment in the building electromechanical or building complex run in an orderly, comprehensive, coordinated and scientific manner, thus effectively ensuring a comfortable working environment in the building, realizing energy saving, and saving maintenance and management workload and operating expenses.
Building intercom system originated in developed countries such as Europe and America, and has a history of more than 20 years in Europe and America, Hongkong, Taiwan Province and other regions. Since the late 1980s, it has been gradually introduced into the mainland. At that time, domestic products were mainly single products acting as agents for foreign countries, and video intercom products were mainly Japanese, Korean and Taiwan Province brands, which were sold in Shanghai and Guangdong, such as "Ai Feng" in Japan. Since the early 1990s, foreign manufacturers of building intercom systems have opened their markets in China. But the earliest building intercom products had a single function, mainly including unit intercom and visual doorbell. During this period, the annual demand in the domestic market was insufficient100000 households. After the first development period of 1995- 1997 in the domestic market, several professional video intercom manufacturers such as Shenzhen Shidean, Guangzhou Anjubao and Zhongshan Aomin appeared in the Pearl River Delta region, and Fujian Wei Zhen and Xi Jiaotong University Kaiyuan also appeared in other parts of China. These manufacturers began to mass-produce their products, and their technology kept improving. The users of intercom and visual intercom in unit buildings show a continuous growth momentum. It is concentrated in economically developed cities such as Guangdong and Shanghai, where the real estate market started earlier. At the end of 1990s, building intercom products entered the second period of rapid development, and large-scale community networking and comprehensive intelligent building intercom equipment began to appear. Zhuhai Taichuan, Shenzhen Huiruitong, Fujian Lilin and Zhuhai Jinjin also launched their own products. Aft acting as an agent for foreign product, independently developing single apartment, simulating non-visual system and simulating visual system, that build intercom market with visual networking building intercom security system as the mainstream product has gradually formed.
During the period of 1990 ~ 1995, domestic building intercom systems were basically intercom systems. Around 1995, residential quarters with video intercom systems began to appear in China, but the number was very small, and the products used were all imported products. In addition, the function of the product is mainly the simplest direct pressure system, and there are few auxiliary digital systems.
During this period, many international products entered China, such as Fermancos FERMAX in Spain, KOCOM in Korea, COMMAX in Korea and NET in Japan. These international brands have brought new concepts of building intercom: visual function and community management function.
Driven by these brands, the domestic building intercom market continues to expand, and there is a new trend in domestic products. Around 1996, Shenzhen Shidean Technology Company developed the first practical video intercom extension in China. Secondly, more domestic companies invest in the building intercom industry, absorb the essence of foreign famous brands through digestion, and combine the actual situation in China (for example, the density of residential quarters in China is higher and the capacity of residential quarters is larger) to carry out localized development of building intercom products.
1996-2000 is the first climax of the development of building intercom industry in China, which is mainly reflected in the functional development of building intercom system itself: stronger networking ability and better product stability. With a number of emerging building intercom enterprises also entering the stage of product mass sales (such as Anjubao in Guangdong, Aomin in Zhongshan, Dinek in Shenzhen, Guanlin in Fujian, etc.). ), the overall building intercom market has entered a stage of fierce competition. During this period, there were hundreds of building intercom manufacturers all over the country.
In the 2 1 century, due to fierce competition, some imported products began to set up their own processing centers in China to reduce costs, and many wholly-owned or joint-venture building intercom enterprises were established. At this stage, new technologies are applied to building intercom products. Market competition tends to be cruel, and some manufacturers quit the building intercom market in the fierce competition. Only those manufacturers with stable product quality, comprehensive product technology, more competitive price and better service can be invincible in the fierce competition. With the continuous expansion of the intercom market, the state and local governments have also introduced some policies to regulate the intercom market, and some local governments have also introduced some policies to install building intercom systems, which has also promoted the vigorous development of the intercom industry.
Generally speaking, weak current system accounts for 2%-5% of the total project cost, while building automation system accounts for an irregular proportion of weak current system (excluding fire fighting system and network equipment) investment, but it will not exceed 40% on the whole. The investment of building automation system varies with the type and scale of building, mainly depending on the type and scale of building, HVAC, hydropower equipment and control technology adopted.
The content is as follows:
1, video monitoring system 2, security alarm system 3, building intercom system 4, access card system 5, fire alarm system 6, public address system 7, multimedia conference system 8, cable TV and satellite TV system 9, multimedia information release system 10, computer room system 1 1, building BA system and IBS.