The development of building electrical technology is synchronized with the development of building technology and the development of electrical technology. Especially with the development of information technology, such as computer technology, control technology, digital technology, display technology, network technology and the development of modern communication technology, so that the building electrical technology has realized a leap forward. Since the reform and opening up, extensive technical exchanges with the international community, many advanced international new products, new technologies continue to enter the Chinese construction market, so that the construction electrical industry has taken a new step forward.
The development of building electrical technology is synchronized with the development of building technology, electrical science and technology. Especially with the development of information technology, such as computer technology, control technology, digital technology, display technology, network technology and modern communication technology, so that the building electrical technology has realized a leap forward. Since the reform and opening up, extensive technical exchanges with the international community, many advanced new products and technologies from the international community continue to enter China's construction market, so that the building electrical industry has taken a new step forward.
The late 1970s, the construction industry is one of China's major pillar industries, the building electrical profession in the absence of standard specifications, no scientific and technical journals, no professional societies, no scientific research institutions, no exchange of information, which is very disproportionate to the country's economic development. Building electrical specialty of the above problems are not solved, is bound to drag the construction industry. After just a few years, this situation has been greatly improved. Colleges and universities have opened in the electrical automation and building electrical related basic courses; the establishment of the Architectural Society of China Building Electrical Academic Committee, the national building electrical design technology collaboration and information exchange network, published and distributed "building electrical" magazine, the Ministry of Standards "Building Electrical Design Technical Regulations" was also promulgated in 83 years. For the future development of building electrical design has laid a solid foundation, and become the driving force to promote the synchronous development of the construction industry.
Provinces and cities have also been established on this basis of the corresponding academic institutions for the region's building electrical development and progress of active efforts, through the introduction, exchange of new technologies in the design of building electrical, to achieve the training of the vast number of on-the-job technicians to improve the business of a fruitful way.
With the deepening of reform and opening up, and international technical exchanges, cooperation is more and more frequent, from the late 70's Nanjing Jinling Hotel first high-rise buildings at home and abroad after the precedent of cooperation in the design of successive construction of a number of high-rise buildings in Guangdong, Shenzhen, Shanghai, Beijing and other places. Some are cooperative design, some are domestic design units to complete independently. During this period, the majority of design units have felt that the speed of development of building electrical technology, we are closed to so many years of unexpected. We can recall the situation in the early stages of reform and opening up of the construction sector, the country's coastal cities near Hong Kong and Macao as a window of reform and opening up, many provinces and cities across the country's architectural design institutes to open up in the coastal special zones, branch offices, companies as a window to understand the new technology. This kind of initiative, at that time, did play a good role, so that we further see our own gap, but also gradually understand the situation of foreign building electrical development. Through exchanges with foreign counterparts, the introduction of new products, new technologies used in construction. Promote and accelerate the progress of China's building electrical technology. After years of development, with the advancement of basic construction, building electrical technology has been fully developed nationwide. Especially from 1992 after Comrade Xiaoping's southern tour speech, after the reorganization, recognized the direction, the situation of the national capital construction lasted more than a decade, with the momentum of the world's attention to the continued high-speed development of the construction of the electrical industry has made great progress.
Building electrics include strong and weak parts, the design of the strong part of the design mainly includes: power conversion and distribution system, power and lighting system, lightning protection and grounding system. Generally speaking, the building power distribution system mainly includes: high and low voltage systems, transformers, standby power systems, etc.; electric power system mainly includes power system distribution and control; lighting system includes indoor and outdoor various types of lighting; lightning protection and grounding system includes lightning wave incursion, lightning induction, grounding, equipotential linkage and local equipotential linkage, auxiliary equipotential linkage, and so on. In this short period of more than twenty years, the technology and products of these systems have changed dramatically, and many design concepts have also changed dramatically. For example, the high-voltage switchgear in the high-voltage system, the earliest circuit breakers used for oil circuit breakers, and then gradually developed to less oil circuit breakers, not only large size, and not fireproof. Configuration of high-voltage switchgear is large, but also must be independently set up in their own compartments, taking up a lot of floor space. Now used vacuum circuit breakers and SF6 circuit breakers, not only small size, and short-circuit capacity is also high, the cabinet size is also much smaller than the original cabinet, due to the circuit breaker does not have any oil, fire resistance greatly improved, and can be placed with other low-voltage equipment **** in a room, both to save space, but also to facilitate the management. Low-voltage circuit breakers have been developed from the past volume, short-circuit capacity of small to high-current, high breaking capacity, small size, stable performance, so that the system is more secure and reliable, and bring convenience to the design. In recent years, low-voltage circuit breakers and towards the direction of intelligent development, can be a variety of parameters of the circuit breaker through the industrial control bus, the signal is transmitted directly to the computer.
The emergence of dry-type transformers for the building electrical design has brought great convenience, due to the non-existence of transformer oil leakage due to the possibility of fire, so that it can be conveniently set up in the interior of the building, more directly into the load center. In addition, it also eliminates the limitations on the capacity of the oil transformer in the building, the building of dry-type transformers can be used in a larger capacity. In a project that has been designed, four 2500kVA dry-type transformers have been used.
Emergency power supply used in the generator set, from its performance and size, are greatly improved than in the past. In addition to the use of diesel generator sets in the project, as emergency lighting, EPS can be used, for the equipment allowed to interrupt the power supply in milliseconds, UPS can be used.
Power equipment control, from the past a single relay control towards automatic control, in addition to various types of components with better performance, small size, so that the control box volume is reduced, more mainly due to the use of digital technology control, so that the controlled equipment is in the best control state. Controlled equipment is in the best control state, and further achieve the effect of energy saving.
Lighting project is a single source of light from the past, light sources and lamps and lanterns in the low efficiency of the situation towards a broader prospect. Currently used in the building of the light source, there are a variety of varieties to choose from, the light source towards high luminous efficiency, good light color, high color rendering index direction, the lamps and lanterns are also constantly improving its efficiency and light distribution form, in order to facilitate the application of a variety of different occasions. Light source accessories, such as ballasts for fluorescent lamps, from the past ordinary inductive ballast development to energy-saving inductive ballasts, electronic ballasts, and for the size of the harmonic component, the production of low harmonic electronic ballasts. Numerous light sources, accessories and lamps are available to meet the various choices and designs of designers, and to fully satisfy the requirements for lighting in various types of buildings and places. Whether it is indoor work lighting or decorative lighting, whether it is the outdoor lighting of roads and courtyards or the floodlighting of buildings, all of them show that the development of lighting technology brings convenience and benefits to architectural lighting.
Additionally used in the electrical design of other devices and equipment, such as dual-power mutual switching mutual casting switch, but also from the traditional products to the specialized production, in addition to meet the conventional power switching, but also to meet the electronic equipment dual power mutual casting, can be in the 1/4 power supply within the perimeter of the mutual casting of the product, and greatly improves the reliability of the power supply and the continuity of the product.
Power supply cables and wires are a large number of products used in building electrical. View the past cable and wire samples, its variety appears poor, and today, a variety of cables continue to launch, from ordinary PVC cables to flame-retardant, fire-resistant, low-smoke halogen-free irradiation environmentally friendly cables; from ordinary insulating materials to mineral insulated; from ordinary insulated bus bar to the closed bus, pre-branching cables and so on. These technologies provide a strong guarantee for the safety, reliability, convenience and environmental protection of building electrics.
For special building power distribution needs, some new devices have also been widely used. For example, the operating room of large hospitals using medical premises leakage protection, residual current monitoring system.
The technical development of the strong electrical system, is the majority of engineers and technicians have witnessed, but also what we have experienced. Such a huge development for China's building electrical construction has laid a good foundation, but also for the building of safe electricity to create conditions.
With the deepening application of building intelligence technology, some equipment or system control, gradually moving towards monitoring by a professional control system, and open its communication protocols to the building equipment monitoring system to achieve interconnection and interoperability between systems. For example, the building's electric power automatic monitoring system, the use of fieldbus technology to achieve data acquisition and processing, centralized monitoring, to achieve the telemetry of the power distribution system, telemetry, telemetry, telecontrol and telemessage, to achieve the unattended power distribution substation. The system can continuously collect and analyze, and give necessary tips or warnings in advance to facilitate the safe operation of the system. Electric power automatic monitoring system adopts computer technology, data processing technology, control technology, sensing technology, communication network technology, power electronics technology, etc., which can basically replace the traditional secondary circuit, and has the advantages of simple wiring, reliable performance and easy maintenance. At the same time, the energy-saving control of the lighting system, the second largest energy-consuming household in the building, has also begun to be generally emphasized, and professional lighting control systems are widely used in many buildings. Lighting control mode from a single timer switch control to real-time sensor control, light reduction control and other aspects of development. In addition, a variety of flexible control methods, such as scene control, remote control, on-site control, etc., maximize energy saving while also achieving comfort, functionality and humanization of the lighting system.
For example, in the late 80's compiled "building design fire code" GBJl6-87; 90's "civil building lighting design standards" GBJl33-90; "Civil Building Electrical Design Code" JGJ/16-92; "Industrial Lighting Design Standard" GB50034-92; "high-rise civil building design and fire code" GB50045-95; "Power Supply and Distribution System Design Code" GB50052-95; "l0kV and the following substation design specification" GB50053-94; "Low-voltage power distribution Design Code" GB50054-95; "General Electric Equipment Distribution Design Code" GB50055-93; "Building Lightning Protection Design Code" GB50057-94 and so on. For the building electrical design provides a basis to follow, but also for the building electrical to standardize a solid step forward.
Weak electricity in the late 70s its main voice communication telephone system and simple broadcast sound reinforcement system, into the 80s, with the application of *** with a TV antenna, automatic fire alarm system and building equipment monitoring system, the content of the weak electricity system more and more. Especially into the mid-1990s, the application of integrated wiring technology in the building, the design content of the weak power system from the first few systems gradually expanded to more than a dozen subsystems.
"Intelligent buildings" began to appear in China, the country has experienced nearly two decades of development, can be roughly divided into two phases: the first phase is from the late 80s to the mid-90s, for the exploration and practice stage, this stage in the concept of intelligent buildings, design concepts, construction standards and other aspects of the understanding of the building are still More fuzzy; the second stage is the late 90's so far, for large-scale construction and high-speed development stage, after the first phase of nearly a decade of practical application, the industry and the community on the understanding of intelligent buildings gradually tends to be clear, from the early more blind to the return of rationality and objectivity. Corresponding to the building intelligent technology and its application has also made great progress, the intelligent building design juice, construction, acceptance specifications and related regulations have been gradually established and improved. By the end of the 1990s, the construction of domestic intelligent buildings has gradually embarked on a healthy and orderly development track. Into the twenty-first century, with the development of social informatization, building intelligence system has become an indispensable infrastructure in many buildings, intelligent building design, system integrators continue to expand the team has developed into a new force in the construction industry, and its supporting products manufacturing industry also to the localization and industrialization of the direction of the development and give the building a new concept.
Since January 1996, the Ministry of Construction held the first national intelligent building seminar in Shanghai, China's intelligent building has made greater development. This meeting from the definition of intelligent buildings, concepts, construction standards and so on the technical application of building intelligent systems to form a more objective understanding, and put forward should be rational approach to the construction and development of intelligent buildings, the promotion and application of intelligent building technology has played a positive role in the promotion and application of intelligent buildings. Intelligent buildings from the initial real estate developers to develop commercial buildings gradually expanded to government offices, hotels, commercial buildings, hospitals, banks, securities, libraries, museums, exhibition centers, terminals and other types of public **** building, and gradually expanding to residential communities.
In order to strengthen the design management of building intelligentization project, standardize the project design and ensure the quality of project design, in 1997 and 1998, the Ministry of Construction issued the "Interim Provisions on the Design Management of Building Intelligentization System Project" and "Provisions on the Qualification Management of Intelligent Building Design and System Integration". at the end of 1998, the Ministry of Construction issued the 194th document, which was "Notice on the Establishment of Special Qualification for Building Intelligent System Engineering Design and System Integration and the Carrying Out of Pilot Work", as well as an annex on the qualification standards for building intelligent system engineering design and system integrators, which is a quasi-personal qualification of the market for participating in the design and contracting of intelligentization, and which has caused a great repercussion in the building intelligentization industry . So far, more than 1,000 designers and system integrators have been authorized to enter the market. In order to assist the governmental departments of the construction industry to carry out the corresponding management and technical support, under the leadership of the Design Department of the Ministry of Construction, the first Expert Committee for the Design of Building Intellectualization System Engineering was established in June 1998. In January 2003, the Expert Committee was reorganized, and the Ministry of Construction leaders were personally responsible for the establishment of the Ministry of Construction Construction Engineering Technical Expert Committee, of which the Expert Committee on Building Intellectualization Technology was one of the committees. The Expert Committee serves as an advisor and assistant to the government, assisting the government in industry management and technical services, carrying out technical consultation on demonstration projects and pilot projects, and providing a basis for decision-making by the leaders of the relevant departments.
With the rise of intelligent buildings in China. There is an urgent need to have the relevant regulations, norms and standards as a design and construction of the guiding technical regulations. in March 1995, China's engineering construction and standardization of Association of Communications Engineering Committee promulgated the "building and complex integrated wiring system design specifications". in July 1995, Shanghai, by the East China Architectural Design and Research Institute of the preparation of China's first local intelligent building design standards. Subsequently, a number of provinces and municipalities also prepared their own intelligent building design standards. 2000 July Ministry of Construction promulgated GB/T50314-2000 "Intelligent Building Design Standards". 2000 February, edited by the Ministry of Information Industry, Ministry of Construction approved the GB/T50311-2000 "Building and Comprehensive Wiring System Engineering Design". GB/T50311-2000 "Comprehensive Wiring System Engineering Design Specification for Buildings and Complexes" and GB/T50312-2000 "Comprehensive Wiring System Engineering Acceptance Specification for Buildings and Complexes" were formally promulgated. The formulation of these technical regulations has laid a technical foundation for the healthy and orderly development of intelligent buildings in China. in August 2000, the Ministry of Construction revised and issued the Lightning Protection Design Specification for Buildings, focusing on increasing the number of electronic products in the weak power system of intelligent buildings to prevent lightning strikes and lightning impulses from destroying the provisions of the system. in 2004, it also issued the Lightning Protection Design Specification for Information Systems C-B50343
In order to better articulate with the design standards, the quality of the project to do a fair and objective evaluation of the quality of intelligent building projects to provide a basis for acceptance, the Ministry of Construction in July 2003 promulgated the GB / T50339-2003 "intelligent building project quality acceptance specification". Thus basically achieved from the design, construction to acceptance of the important links are followed.
Intelligent technology is only a means to achieve the goal of saving energy, enhancing the use of building functions, protecting the environment and sustainable development by equipping the building with intelligent functions, emphasizing high efficiency, low energy consumption and low pollution, and achieving the goal of saving energy, enhancing the use of building functions, protecting the environment and sustainable development under the premise of truly realizing a people-oriented approach. The implementation of the building should start from the strategic height of sustainable development, focusing on ecology and environmental protection, which is the eternal theme of sustainable development. Through years of practice, with a rational and pragmatic attitude, starting from the actual needs of the project, and taking practicality and applicability as the standard, we do not blindly follow the trend and unilaterally pursue the advancement and comprehensiveness of the intelligent system, but with the design concept of being moderately ahead of the curve technologically and achieving reasonable investment, we find out the advancement, reliability in view of the specific conditions of the different projects in respect of the usage functions, investment standards and management requirements, Rationality and economy of the optimal point of intersection, this concept has become intelligent building industry **** knowledge. The development of intelligent building technology, also makes the construction of the country's colleges and universities have for this technology to open up the corresponding professional courses, and training out of the relevant professional postgraduate students.
So far, thousands of intelligent buildings have been built one after another, so that the world construction industry attention, while the national residential district intelligent system demonstration projects have also been built. By the Ministry of Construction Science and Technology Development Promotion Center to assess the adoption of a number of projects have been actually used, with the domestic leading level of building intelligent technology and scientific and technological achievements.
Building intelligent technology is multidisciplinary, cross-industry system engineering.
Building intelligent technology mainly includes: automatic monitoring system of building equipment, security systems, parking management system, automatic fire alarm and fire linkage system, communication and computer network systems, integrated wiring system, broadcasting system, cable TV system, digital conference and video conferencing system, system integration and other dozen of subsystems. Domestic building intelligence technology has developed from the initial independent subsystems to system integration.
(A) building equipment monitoring technology
The 1980s mainly used computer centralized monitoring, due to poor reliability, slower operation, after the 90s has been rarely used, replaced by a centralized control mode. In the late 1990s, with the development and combination of computer technology, control technology, network and communication technology, building equipment monitoring technology has developed rapidly, highlighted in:
1. Fieldbus architecture and reference model, application software development platform and tools, fieldbus applications and other aspects of the development of a great deal of fieldbus technology in the building equipment monitoring system has been widely used.
2. Under the premise of in-depth research on the networking technology of control network, real-time network operating system, reliability technology, etc., Ethernet control network appeared.
3. The integration of control networks and information networks has become a hotspot in the development of control network technology, and the integration technology of various building equipment monitoring systems and information networks is becoming increasingly mature.
4. A variety of new control network technology in the building equipment monitoring system has been applied. OPC technology in the field of computers, Web technology, TCP / IP has gradually integrated into the building equipment monitoring system, greatly promoting the development of building equipment monitoring technology.
(II) security technology
Security includes closed-circuit television monitoring, intrusion alarm, channel control (access control), patrol, intercom, perimeter defense and other subsystems. Security system from the initial subsystems are independent of each other, the development of today's linkage between the subsystems, greatly improving the security of the tightness, reliability and real-time, for people's work, study and life provides a security guarantee. CCTV monitoring subsystems also from the previous analog technology to the digital direction, the entire security system is also towards the system scale, digital, integrated direction.
(C) communication network technology
Intelligent buildings in the communication network, including computer networks, two-way cable television transmission networks and telephone communication networks, the first two as the intelligent building broadband backbone network focuses on almost all of the information applications and information management resources, connecting almost all of the user site. In the twentieth century before the mid-1990s, all types of networks have a certain market and users, but in the late 1990s, Ethernet with its reasonable investment, flexible cabling, superior performance, easy to use and maintain, and other advantages, and gradually dominate in a variety of network communication technologies. Ethernet transmission rate, has developed from the initial 10Mbps, 100Mbps to 1Gbps, 10Gbps and even higher rates. Intelligent building's telephone network (including ISDN, xI)-SL), at present, in addition to voice communication, can also be used for data, images and other narrowband data communication, so that people can be through the communication network, to realize the function of videoconferencing, teleconferencing and so on. Access network technology is the key to connect intelligent buildings with external networks, which makes the tangible world become smaller and smaller and makes people's work and life change greatly. Intelligent buildings connected to the metropolitan area network or the Internet, the requirements of the connection of the bandwidth is increasingly high to meet the growing demand for user data communications. In the wired network development at the same time, the wireless network with its flexibility of access, began to enter a rapid development stage. From the initial 11M to 2003 through 54M, and now developed to more than 100 megabytes, it provides great convenience for people's mobile Internet access, but also in many areas of the huge potential for development, is becoming the trend of network development.
(D) integrated wiring technology
Integrated wiring is an intelligent building in the data, voice and multimedia communication of the basic platform, since the technology into China's market, due to its excellent performance, to the domestic market for intelligent buildings has brought a new concept, new technology, and immediately in the construction industry has caused a huge repercussions, by all kinds of intelligent buildings are widely used. In order to adapt to the development of network transmission bandwidth and rate, integrated cabling new products have been introduced, from the initial category 3 wire, category 5 wire to category 6 wire, and even appeared ahead of the standard category 7 cabling system products to meet the needs of the gigabit network. With the increase in network transmission rate, in order to adapt to its development of 10 Gigabit fiber optic network has also been put into the market, the new multi-mode and single-mode fiber will be widely used as a good transmission medium. Copper cable from Category 3 to Category 5, Super Category 5, Category 6 and even higher categories, from copper to fiber optic cable, technology and products are constantly updated, fully reflecting the rapid development of the Ting as well as the broad prospects for the application of new technologies in intelligent buildings.
(E) system integration technology
In the intelligent building of each subsystem, in general, are connected by their respective networks, in their respective operating stations to complete the expected work, but has not yet reached the information resources **** enjoy. In order to achieve the convenience of management, information resources *** enjoyment between the subsystems, should be system integration.
In the process of system integration, integration of different system platforms selected, the network structure is different, the scope of the integrated subsystems are different, there are different integration modes. With the development of computer technology, network technology, control technology, display technology, so that the building equipment monitoring system through the computer network and other sub-systems connected to the resulting building equipment monitoring system-based system integration. There is also a way to integrate the respective systems on an equal footing, establish a system integration management network, and consider each subsystem as a lower level field control network and integrate them on an equal footing. The real-time data of each sub-system, through the open industry standard interface, converted into a unified format stored in the system integration database or server, the system integration management network through the program to achieve unified management of each sub-system, monitoring and information exchange.
System integration, the use of open protocols in order to achieve the linkage between the relevant subsystems control and information **** enjoyment, improve the management efficiency, but also improve the ability to deal with emergencies, and to achieve the purpose of energy saving and saving manpower, which is the building equipment management system (BMS). System integration is not the purpose, but to enhance the use of the building function and improve management efficiency of the technical means, the integration of the content is not more good, but should be based on the use and management of the needs of the technology is mature, reliable system, reasonable investment, efficient management and other prerequisites, on-demand integration.
(F) residential district intelligence
The twentieth century, the 1990s by the international concept of intelligent housing and electronic house, building intelligence technology gradually extended to the residential district, initially in a few economically more developed cities along the coast of our country to achieve results. Building intelligence technology began to develop from the public **** building to residential and residential communities, building intelligence technology rapidly to the extension of community intelligence, has become an important market for the development of intelligent buildings. From public **** building intelligence to residential intelligence, which is the market demand, but also the actual development needs. Design institutes around the country will be residential intelligence into an important position, residential intelligence to provide a platform, and intelligence and residential design with cutting-edge and challenging areas. The development of intelligent technology in residential district can be summarized in the following aspects: the system design emphasizes the people-oriented design concept, which should take into account the convenience of the use of residents at all levels and deal with the relationship between security and comfort, the relationship between advancement and practicability, and the relationship between functional configuration and reasonable investment. The security system has developed from an independent security subsystem to a comprehensive security system combining family and community, technical defense and human defense. Information and communications from a single broadband access to the development of multi-operator options, broadband access network from xD-SL, two-way cable TV network to the formation of community computer LAN direction, the community residents can enjoy the information and communications services from a single broadband Internet access services to the community LAN on the extension of a variety of value-added services. The application of automatic monitoring of electromechanical equipment, water, electricity and gas meter remote transmitting and copying, audio and video system, property management informatization and other systems has greatly improved the living environment and quality of life of the residents in the district. The application of home intelligence technology, so that the residents of the district actually experience the information age for life brought all kinds of convenience and wonderful, so that the concept of home office, network life and so on become a reality.
In order to guide the healthy development of China's intelligent residential district, the Ministry of Construction, Residential Industrialization Promotion Center in December 1999 promulgated the "national residential district intelligent system demonstration project construction points and technical guidelines" (Trial Draft), the demonstration of the project to make detailed provisions and requirements. This has played a key role in standardizing the market of residential district intelligentization and promoting the healthy and orderly development of residential district intelligentization construction. On this basis, the demonstration program of residential intelligentized demonstration district is carried out to guide the healthy and orderly development of intelligentized technology in residential districts across the country. Intelligent residential district in China around the rapid development of the annual development of hundreds of millions of square meters in the national urban residential development accounted for a considerable proportion, and has gradually become the mainstream of the development of residential buildings. On the basis of the national demonstration project of residential district intelligent system, the Residential Industrialization Promotion Center of the Ministry of Construction issued the "Key Points and Technical Guidelines for the Construction of Intelligent System in Residential Districts" in February 2003, which serves as the basis for the design and construction of intelligent district. This also indicates that residential intelligence from the demonstration project formally towards a comprehensive residential intelligent construction.
Because of the special characteristics of China's living environment and conditions, it is difficult to introduce a complete set of intelligent residential district products, prompting the domestic product suppliers to develop a large number of intelligent residential district required a variety of products, thus forming a new intelligent building industry. As a result of the broadband network into the community as well as the expansion of the scale of the community, and now put forward the concept of digital community, the development of intelligent residential communities to a new stage.
Digital community further strengthens the function of the network, with complete LAN and WAN, the international Internet broadband connection. Through the complete network can realize the community electromechanical equipment and home appliances automation, intelligent monitoring, security system automation, intelligent monitoring. Digital community applies modern sensing technology, digital information processing technology, digital communication technology, computer technology, multimedia technology and network technology to accelerate the speed of information dissemination, improve the performance of information collection, transmission, processing and display, and enhance security. Digital community improves the integration degree of intelligent system, realizes the full *** enjoyment of information and resources, and improves the optimization degree of the system. Digital community is the unit node of digital city, and the construction of digital community creates conditions for digital city and lays the foundation for the application of e-government, e-commerce, e-logistics and other technologies.
The rapid development of intelligent building in China's construction industry has played a positive role in transforming and upgrading the traditional construction industry and improving people's living standards. Intelligent building products localization level gradually improved, through market competition to break the monopoly of foreign products in the domestic market situation.
China's accession to the WTO, the construction market has gradually become a completely open market, how to deal with the market competition of building intelligence, the urgent need to make the intelligent building industry towards the road of intensive development. Intensification can bring us great economic benefits and greatly improve efficiency. Therefore, it will be an important measure to improve the competitiveness of China's building intelligence market. The rapid and sustained development of China's national economy, the enhancement of the comprehensive national strength, and the advancement of urban informatization construction provide a strong guarantee for the development of intelligent buildings, and the development of China's intelligent buildings will face a broader prospect.
More about the engineering/service/procurement category of the tender writing production, to enhance the winning rate, you can click on the bottom of the official website customer service free consultation:/#/?source=bdzd