At present, the implementation and quality control of weak current engineering in intelligent buildings is a hot spot in the domestic intelligent building industry. In order to make the intelligent building live up to its name and give full play to its due investment effect, this paper analyzes and discusses the implementation, key points of project management, construction technology, specification and acceptance, and project quality control of the weak current project in intelligent building, so as to promote the orderly and effective operation of the weak current project in intelligent building. 1. The implementation and quality control of weak current engineering in intelligent building is a hot spot in domestic intelligent building industry at present. In order to make intelligent building live up to its name and give full play to its due investment effect, it analyzes and discusses the implementation of weak current project in intelligent building, the key points of project management, the construction technology, specification and acceptance of weak current project, and the quality control of the project, so as to promote the orderly and more effective operation of weak current project in intelligent building.

I. Implementation of weak current engineering in intelligent building The implementation of weak current engineering in intelligent building must firmly grasp the key points of each link in its process, and carry out quality evaluation and control. 1, functional requirements analysis and overall design of the system. Mainly to grasp the design standards of the project and the functional positioning of the system, that is, from the functional requirements, the overall design can reflect the functional characteristics or some "highlights" of the project. 2. The selection of weak current contractor is the key to the success of the project. According to the characteristics of weak current engineering and the analysis of the success or failure of weak current engineering in intelligent buildings in China, it is shown that there are many engineering operation modes, and subsystems are generally coordinated, managed and controlled by system integrators (general contractors) or owners. Choosing a competent general contractor (integrator) is the key to the success or failure of the project. In a sense, system integrator is an organic "integration" of technical ability, project management and organizational ability. 3. The system maintenance and management of weak current engineering is the basic guarantee of engineering performance and return on investment. The opening and operation of the weak current project is an important symbol of the success or failure of the project, and the performance and achievements of the intelligent building and the return on investment are its ultimate goals. Therefore, although the weak current project has passed the acceptance and evaluation, system maintenance and management are the basic guarantee for the project to achieve results.

Two. Key points of weak current project management in intelligent buildings 1. According to the contract and design requirements, technical management, engineering interfaces between weak current systems, subsystems and electromechanical equipment, civil engineering and decoration specialties, determination of engineering scope and responsibility interfaces among product suppliers, operation contractors and construction units, and modification, adjustment and reconfirmation of these engineering interfaces during project implementation. The determination of weak current engineering interface is a necessary condition for system opening, and it is also one of the key or difficult points in weak current engineering technology management. The determination of engineering interface usually includes the determination of equipment and material supply interface, system technology interface, design interface and construction interface. Do a good job in reviewing technical and construction design drawings. Weak current engineering design involves a wide range of professions and types of work. Before construction, we must do a good job in auditing weak current engineering technology and construction design, find problems in time, and take necessary measures to ensure the construction period and quality and reduce rework. Especially for weak current projects, we must review the above drawings to ensure that the equipment list and monitoring list in the construction drawing are consistent with the actual situation. That is to say, each monitoring point in the list of monitoring points must be reflected on the drawings and matched with the controlled point or monitoring point interface, and the number, model and specification of its equipment are consistent with the drawings and equipment list, so as to ensure the integrity of the system on hardware equipment and meet the requirements of interface interface, linkage and technical parameters of information communication interface. 2. In addition to meeting the routine project management, project management should also focus on the following tasks: (1). Strengthen the coordination between majors and types of work. Weak current engineering involves civil engineering, decoration, air conditioning, water supply and drainage, power supply, lighting, elevators and other majors. In a sense, weak current engineering is matched with the type of work. Therefore, they must closely cooperate and coordinate with the above-mentioned professions at the project site, especially in the fields of valves, water pipe temperature sensors and flowmeters. (2) Strengthen the inspection and acceptance between processes. Because the installation and debugging of pipelines, lines, trunking and line laying equipment in weak current engineering may be carried out by different construction units, corresponding construction records or installation forms must be filled in when each working procedure or type of work is completed. When installing, threading and wiring single equipment, handover and acceptance must be carried out in accordance with concealed works and corresponding engineering acceptance specifications and design drawings, and the test records of single equipment should be made well, and a relatively complete engineering and technical file should be submitted.

Three. There is no national standard for intelligent building construction and acceptance of weak current engineering construction, but local standards have been introduced one after another. Shanghai's Code for Construction and Acceptance of Intelligent Buildings (DG/TJ08-60 1-200 1) has become the construction code of engineering buildings in Shanghai, and it will be strictly implemented in the future. 1. Electrical wiring and grounding system of intelligent building describes the technologies, specifications and acceptance standards for bracket installation, trunking, wire, pipeline, cable laying, power equipment installation, grounding system installation and construction. In particular, it is emphasized that power lines and signals are responsible for slotting and laying control cables. Except for special requirements, the grounding system can use grounding body, but the weak current system grounding trunk line must be separated from the strong current grounding trunk line. The shielding layer of shielded cable must be grounded at one point. 2. Intelligent Building Equipment Monitoring System (BAS) specifies system equipment (including host, gateway, communication equipment, DDC, control panel, etc.). ) and system input devices (including various field devices such as temperature, humidity, pressure, flow, electric sensors, water flow switch, etc. ). Installation methods, construction specifications and acceptance criteria of output equipment (including various dampers, actuators, valves and their actuators, etc.). DDC, fresh fan, air processor, air supply and exhaust equipment, cold and heat source equipment, VAV terminal equipment, water supply and drainage system single equipment, (water pump, water tank, pool, etc. ) is specified in the system. Debugging procedures, test items, test methods and requirements of single equipment such as power distribution and lighting equipment. And carry out system debugging and acceptance according to the provisions of BAS system acceptance standard.

3. The security system of intelligent building is composed of burglar alarm system, intrusion prevention alarm system, TV monitoring system, access control system, patrol management system, visitor and alarm system, garage management system and communication system. The installation requirements, construction specifications and acceptance criteria of various intrusion detectors, cameras, pan/tilt, decoders, monitors, intercom equipment, patrol information buttons (switches), card readers, induction coils, racks and main control equipment (stations) are specified. At the same time, the basic requirements, sequence, technical acceptance and acceptance criteria of single equipment and system debugging and acceptance of the above seven subsystems are stipulated respectively. 4. The Intelligent Building Communication Automation System stipulates the workflow of system installation, debugging and acceptance, including equipment installation, system debugging, submission, preliminary inspection and testing, handover, handover preparation, handover and commissioning acceptance test, and all others are subject to system acceptance test and final acceptance in accordance with Part II of the Acceptance Standard for Intelligent Building Systems. This specification describes the requirements for equipment installation, including cabinets, machines, peripheral terminal equipment, distribution frames (MDF, ZDF), information sockets, cable terminals, optical fiber core terminals, VSAT terminal antennas and their lightning protection grounding, and power supply equipment (UPS). The system testing and preliminary inspection includes the testing and preliminary inspection items and standards of optical cable lines, SDH optical cable transmission equipment, remote modules, program-controlled user exchanges, V5 access network equipment, digital data networks, DDN node machines, conference television systems, VSAT end stations, communication power supplies (DC power supplies) and structured wiring. 5. Automatic fire alarm and linkage control system This specification describes the installation requirements of various fire alarm detectors, alarm buttons and interface modules (input and output, switching, isolation, etc.). ), alarm controller, floor display and other equipment, debugging of main and standby power supply, inspection of automatic fire alarm function, alarm test of detector and linkage debugging of control equipment. Including fire hydrant system, automatic sprinkler system, foam and dry powder fire extinguishing system and linkage control equipment (including fire power supply, switch, elevator, fire shutter door, air conditioner, fire door, smoke control fan, etc. ), alarm and communication detection, sampling range of system acceptance test items and acceptance criteria for judging qualified and unqualified items. 6. Intelligent Building Office Automation System This specification determines the model of intelligent building office automation system, and specifies the installation and testing of computer network system, including the installation and testing of switches, wide area networks, access equipment routers, network hubs, network software, computer peripherals, installation and acceptance of application software, system testing, and the contents, methods and criteria of system single and comprehensive acceptance.

Fourthly, the quality control of weak current engineering in intelligent buildings should be comprehensive. Here, according to the characteristics of weak current engineering, the quality control of design, construction and debugging in three main stages of project implementation is emphatically expounded. 1. Check the quality control in the design stage, and confirm that the system design, technical design, function description and equipment selection of each subsystem must meet the requirements of the contract, the owner and functional requirements analysis; According to the determined engineering interface requirements, check whether the technical handover and mutual information between various disciplines and subsystems meet the requirements, including functions, signal matching, equipment configuration, logic, etc. Check that the design pipeline of the controlled object is in place and the signal interface functions of both parties meet the design requirements; Conduct a comprehensive review of the design drawings to ensure that the equipment list and monitoring point table are completely consistent with the construction drawings. 2. The quality control of construction projects should be carried out in stages according to the construction technology and relevant construction and acceptance specifications; Carry out construction and quality control according to the quality assurance system of the illustrated construction process block diagram; Do a good job in the construction records and acceptance of electrical pipelines, trunking, cable laying and concealed works; According to the key points of construction technology, do a good job of single equipment installation quality inspection form; According to the requirements of design and product technical specifications, make a good record of testing and debugging of single equipment. 3. System debugging includes file checking before system debugging; According to the design, specifications and contract requirements, prepare the debugging outline, and organize the implementation after examination and confirmation; Record, check and confirm all test data according to the above requirements, deal with problems in time and put forward measures, which will be confirmed by relevant departments; Check in strict accordance with the requirements of specifications and debugging outline.

Verb (abbreviation of verb) Conclusion We believe that the overall design of intelligent building engineering is the forerunner and embodiment of the function and level of intelligent building; Project implementation is the key to the success or failure of intelligent buildings; The selection of system integrator (main contractor), ensuring the project management centered on the implementation of the determined engineering interface, and strictly following the design, product technical standards, construction specifications and quality control are the three elements of the success or failure of the project; The maintenance and management of the system is the basic guarantee for the historical achievements or achievements of intelligent buildings.

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