【 Weak current College 】 intelligent building weak electricity system in construction management

We all know, intelligent building weak electricity system (hereinafter referred to as electronic engineering) is a complex project involving many 365JT technology, multiple-discipline. Weak electricity system must be highly comprehensive consideration of the interface between individual subsystems, and construction of mechanical and electrical interface (such as elevator system, air-conditioning system, electrical equipment, boilers, etc.), and communications systems interface (such as telecommunication access, wired access, etc.), as well as civil engineering, decoration engineering 365JT construction interface, and so on.

Intelligent building weak electricity system construction management itself is a systematic project, to a full-featured, optimize the design of the weak electricity system 365JT is the perfect embodiment of the implementation of the project is a very important aspect, it is the weak electricity system equipment installation and debugging a basic guarantee. It requires not only the overall to the weak electricity system technical requirements, various subsystems of the Internet, various interfaces on the system and work with a comprehensive understanding of the interface, and should take all aspects of construction management, construction, construction, construction specifications, interface construction coordination, etc. Electronic engineering construction management mainly targets and pipeline, cable tray construction related subsystems and grounding systems, they need and engineering construction, decoration construction has a very good fit.

1. construction work
And building construction, construction of weak electronic system mainly includes construction equipment monitoring system (BA), premises distribution system (PDS), safety systems (SA), smart card systems, background audio and emergency broadcasting system (PA), satellite and cable television (CATV), multi-function meeting room system, electronic messaging system and the engine room. Various stages of the work as follows:
1. field installation phase
(1) civil construction combined with phase: building professional figure should be based on the system of marking the necessary embedded parts, reserved floor hole, the hole in the wall, and of construction based on the system diagram by plane piping buried underground pipes. (2) electrical and mechanical equipment installation phase: plane based system piping diagram tray, trunk, branch, trunk pipe wire laying work. (3) the weak electricity system special construction teams deal with civil engineering special construction units and electrical equipment installation units technology gives the low-down, site installation plus, and electromechanical equipment vendors a common interface between technical consultations. (4) civil construction units to the weak electricity system special construction units provide the construction of the necessary conditions for water, electricity, providing high level job. (5) equipment suppliers should provide electromechanical device ontology reserved measuring positions and connectors specification, provide access to all system components and wiring methods, provide intelligent devices and communications interfaces and other technical documents and drawings, and the obligation to carry out technical cooperation. (6) design units dealing with construction design modifications.
2. the debugging phase
(1) before the FBI systems software approach. (2) system hardware approach before the FBI. (3) control equipment unit. (4) engineering on-site hardware and cold. (5) electronic debugging work each subsystem. (6) electrical and mechanical equipment installation and commissioning staff coordinating subsystems with common finish debugging work.

Second, the work interface
Participation in the weak electricity system construction unit mainly ELV party, weak electronic system subcontracting parties, installation and construction companies in the construction process and the owner, installation supervision, weak supervision (supervision), General Contracting, construction and decoration of the total package and other units of coordination is also critical. Figure 1 is the weak electricity system construction parties of coordination and construction processes.
III. construction documents
The construction process, as users demand changes, design changes, construction of mutual coordination needs to be documented through a variety of forms (typically work with single-single, checks, etc.), thereby ensuring that documented, responsibility is clear.

4. construction drawing design
Construction drawing is the construction and installation of units for construction, it is for each subsystem design programme implementation specific, General design of the subsystem refined on the basis of the design, construction drawings.
1 construction drawing design preparation steps
(1) understanding, analysis, comprehensive owners on the needs of each subsystem to determine various kinds of information point settings. (2) design, preparation of working drawings. (3) construction drawings to have construction drawing design plot qualifications Unit review, confirm and sign the plot. Construction plans generally include the following: ① drawings directory: drawing figure don't figure number request number for continuous, n/a drawings in the notes column should be described, new drawings of figure number should be numbered to ensure drawings directory reflect drawings of integrity. ② System schematics. ③ construction and installation instructions. ④ the floor flat construction drawings.
2 various subsystems of construction drawings
Following on the BA system, background audio and automatic emergency broadcast system, CATV systems, cabling systems, smart card systems and weak electricity between construction drawings. 1) weak weak current room between construction drawing drawings is ELV under each subsystem on the pipeline and the power to place between the request of the device, it includes the ELV-trunking arrangement (including the bridge, the physical dimensions and trunking using assignment, etc.); the ELV room construction drawings (including the view in all directions). 2) cabling system (1) comprehensive wiring system map: building data system (computer) and voice information system with integrated distribution chart. (2) pipeline installation instructions: including cable, junction trunking, and the installation location, the cable and wire tube material and material specifications, installation requirements, etc. In addition, the construction of the interface to make the necessary instructions, for example, install the unit in charge of all piping and outlet boxes, tray and trunking, installation, and weak current subcontractors responsible for cable stringing and wiring system installation and construction of related facilities. (3) trunking installation detail: including surface trunking, trunking and line pipe vertical installation details. (4) the floor plan: indicates that ground pipeline trunking, trunking, line tube vertically and information terminal installation location maps. 3) background sound/emergencyBroadcasting system (1) broadcasting system schematic diagram: broadcasting system control centre and broadcasting of audio source and speaker partition, tone control switch, floor control box of distribution, etc. (2) broadcasting subsystem strong toggle schematic diagram: you need to configure the number of the subsystem of the broadcasting system, strong toggle schematics for instructions to complete the structural principle strong switch. (3) construction Description: speaker, audio control switch, floor control box and a pipeline of legend and installation instructions. (4) individual floor plan of the public broadcasting: including various floor public broadcast the required pipeline, speakers, floor control box, tone control switch installation location maps. 4) CATV systems (1) system schematics. (2) construction Description: Terminal panel installation height requirements, branch distributor box, pipeline grounding installation requirements, power requirements, etc. (3) CATV terminal installation requirements: including branch distributor installation construction schematic, wall and floor mounting diagram of the terminal box. (4) the floor plan: pipeline and Terminal Panel location maps. 5) smart card system (1) system schematic diagram: including issuing system, various subsystems of network architecture, system configuration, the system and the interconnection of the property management system. (2) construction Description: power supply pipelines, RS-485 bus line and door installation (electronic door locks, card reader, etc.). (3) the floor plan: pipeline and electronic door locks, the location of the reader, etc. 6) BA systems (1) system schematic diagram: cooling system, air conditioning systems (including control of fresh air handling units, air handling units of control), exhaust systems, distribution systems, lighting control, water supply and sewerage system, Elevator monitoring, and related systems of communications networking and linkage control programmes. (2) construction Description: pipeline construction requirements, main equipment installation requirements, etc. (3) the floor plan: pipeline and equipment location maps.

V. construction drawing design gives the low-down and triage
In the above all completed construction drawings, required for the design and construction drawings for the low-down and triage, conscientious and drawings of the low-down and triage, the rationality of design and construction drawings of the error, and ensure project quality and shorten the construction period there is a very important role. Construction drawing design gives the low-down and triage by weak electricity system contracting party responsible for the implementation, by the owners, the subsystem of subcontracting parties, system installation contractors, installation supervision, weak supervision (supervision), called parties participate. In drawings design gives the low-down and triage, the weak electricity system contracting parties should lead to the above parties pending construction drawings, responsible for system installation and construction of technical personnel and the parties concerned should first read construction drawings, the problem of difficult and finishing, in the design of the low-down and triage.
Triage can be divided into several times, first time triaging the scope broad, in addition to the units involved in light, decoration, design, and other units of the strong electric should also participate in the trial focus on weak construction and decoration, strong electric installation and weak current construction on the decoration, the strong power of special requirements. Second triage the ELV, weak subcontracting and installation contractors as participation in, and press each subsystem, the focus is on and the system installation contractors exchange of views, so that construction drawings to install the full understanding of the construction contractor, at the same installation contractors may make reasonable modifications in order to ensure the implementation of the construction. Triage of the main contents include: (1) Contracting Parties-current system and subsystem design party to give the low-down on construction drawings. (2) pipeline, bridge layout and orientation and system schematics of consistency. (3) pipeline, bridge layout and orientation of rationality. (4) and the strong electricity system for the installation of the equipment and pipeline, cable tray layout coordination. (5) need strong electric system with distribution and grounding requirements. (6) individual subsystems bridge layout between pipelines, and coordination. (7) strong electric switches and weak electricity system audio control, temperature controller, various terminal Panel, go button layout consistency. (8) construction, installation of feasibility.
Trial results to the formation of the participating parties signature triage and archiving. Triage in modifying the contents, the weak electricity system total package using the "modify the notice" (or design changes notice) notification and supervision of construction, property owners, the parties as the basis for construction change, real change will be reflected in the final document.

Sixth, the weak electricity system construction plan
Construction plan including overall plan progress and the progress of the subsystem. During construction, the original plan required constantly modified, but with the overall plan progress cannot have very large deviation, scheduling factors to be considered are as follows: (1) the total workload. (2) material delivery time and cycle (including procurement of for and own pipeline, cable, wire, all types of information transfer boxes, etc.). (3) construction engineering construction schedules, staff security, etc. (4) each subsystem construction coordination between, and in particular should consider a pipeline, the order of the bridge construction. (5) other conditions with construction. 7. construction confirm the quality of the current system of construction range including the various subsystems of pipes, flutes, threading, etc, in addition to the principal contractor construction quality strengthen construction management, General also need to find a report on prison and an appropriate supervision to ensure the strict quality control process. In the following flowchart describes quality supervision station and supervision.

Of course, the construction quality of final confirmation is done by the various subsystems of the test, each subsystem in accordance with their respective functions and specification has a full suite of test and acceptance of the programme.