【 Weak current college 】 building intelligent systems for process control-Power By 【 China power house network 】

<br> With the development of the times, technology advances, the intelligent building is the increasing popularity and acceptance for people. According to statistics, the current installation of intelligent systems, its effect is not very satisfactory, leading to a serious waste of resources ., the reasons are manifold, and product quality and product and system compatibility, also with the programme definition and design, and construction quality control in the process. Thus management engineer should pay special attention to the weak electricity intellectualization system at various stages (tender stage ., design stage, construction, commissioning and acceptance phase) of process management. The author of the work involved in a project of weak electricity intellectualization system process supervision control situation, explore with you. <br> <br> This works as an administrative and .financial centre, with a construction area of about seven thousand square meters, the weak electricity system in four subsystems, Office automation systems, cabling systems, security systems, communication networks, the main leading, high-end products, software, the total cost of .project Department is entrusted to the entire light current owners of intelligent system for process control. In the implementation of four phases, the project management oversight, management, counselling, advice, and get better results. <br> <br> First, the supervision .and control of the tendering stage <br> <br> In the tendering stage, owners are most concerned about is the intelligent system function determines, programme demonstration, tenders drafted and issued, the tenderer and inspection, review of the bid and the selected construction .units. To this end, at the request of the supervision around the owners mainly for the following tasks: <br> <br> 1. assist owners on intelligent systems for function definition and demonstration of <br> <br> According to the owners .of the intelligent systems need to complete tasks, requirements and to achieve functionality, refer to the overall decorative design layout, project management professional staff knowledge to assist property owners clear intelligent system required to achieve the function, unambiguous system control area, room set location, .control line, executing agencies set up programmes, and to determine the type of network systems and material equipment of grades (domestic or import). During this period required to clear three is not equal to: <br> <br> That is, A ., in the building using the PDS does not mean that implements intelligent building <br> <br> B, in a building set of information outlets, the more does not mean that the higher the intelligent level <br> <br> C, the .system integration is not equal to the centralized control <br> <br> You must do three unified: <br> <br> That is, A, needs to be unified with the economy may <br> <br> B, needs to .be unified with the technology may <br> <br> C, theory and practice to the consolidated <br> <br> System integrators should follow uniform planning, phased implementation of the principle. That is, each subsystem information interfaces, protocols, and .so on, should be consistent with national standards, harmonized at the time of order set aside, the subsystem vendor should make joint commitment to comply with the technical Protocol, creating the conditions for integration. The subsystem is operating normally, the conditions are ripe and .then engage in integrated <br> <br> Clear after that can assist in building the drafting of tender, bid evaluation plan and scoring is determined. Because before that the weak electricity intellectualization project tenders not much, not enough experience, so we bid evaluation .plan and scoring criteria in determining the very carefully, listen to their views on the basis of a set of scientific and reasonable, legitimate evaluation methods to ensure that reasonable price bid won. <br> <br> The project system: <br> < .br> 2. assist owners visits to the tenderer <br> <br> Choosing a good design, construction units is the key for the system implementation. Because of the particularity of this project, we take the invitation to tender, the tenderer before we .start with the intention of units according to the written materials it provides pre-qualification, choose strength strong supervision by the owners of the organizations and experts to be targeted, focused on the tenderer: <br> <br> A, design, construction qualification .; design, construction qualification meets State of the corresponding provisions <br> <br> B, technical force and service conditions, the composition of the response time of the service, provide training for owners, etc <br> <br> C, engineering .investigation, focusing on the entity on your completed the design of intelligent systems, construction quality, open rates, system operation and after-sales service, etc. <br> <br> Investigation is completed, the supervision of the various units, the list .of form inspection report to the owners to report to the unit as determined on the basis of the invitation to tender. <br> <br> 3. bid opening <br> <br> For the tenderer's bid, overseeing major focus review: < .br> <br> A, its intelligent system meets the intelligent building design standards (GB/T50314-2000), "building and campus cabling systems engineering approval standard (GB/T50312-2000), the civil electrical design code (JGJ/T16 .-92), "building intelligent systems engineering design standards (DB32/181-1998)," intelligence architectural design fire protection standard (DBJ08-47-95), and other design specifications; <br> <br> B, the bid referred .to in the equipment control system meets the requirements in the tender; <br> <br> C, solution control point of the distribution is reasonable, whether to meet expanding demand, on-site implementation agencies can meet the functional requirements. And experts on .the programme of the network control system, control network technology control network hardware, such as whether you have usability, stability, simplicity, extensibility, and ease of operation, the advanced nature, to provide the technical basis for owners of opening of tenders. < .br> <br> 4. determine the programme, the programme to deepen design <br> <br> To bid, bid Committee by (the owners across the country invited intelligence experts) according to the tender documents for business standard and comprehensive assessment of .the technical tender, identify system, determine the design, construction units and sign design, construction contracts, further deepening the design. <br> <br> Second, the supervision and control of the design phase <br> <br> Intelligent systems design .by intelligent systems design, construction units in decorative design of the detailed design, design basis for decoration design drawings, design specifications, product application design standards and tenders in the smart system functions. Supervision in the design phase of the principal tasks are: <br .> <br> 1. check whether the design of intelligent systems in line with regulatory requirements <br> <br> 2. check the line pipe direction is reasonable, whether economic, and other pipelines. <br> <br> 3. check .the field controller settings location is reasonable and the economy. Number of bids and tenders in consistent, there is no change and fluctuate. Change the reasonableness of the changes. <br> <br> 4. check the system and the strong electricity system interface .design. <br> <br> Intelligent systems design drawings after the confirmation can be used for site construction. <br> <br> III. construction phase of the supervision and control <br> <br> In the construction units to start an .application, a professional engineer should carefully review the construction unit qualification certificate submitted by, construction permits, security, license, project manager certificate information on the availability of, whether or not within its validity period. The same is on the progress of the construction programme ., image review, review of its construction program for proven technology, the key parts of the construction method is consistent with the design and specification requires that the image of progress plan is able to meet the overall project schedule, in the review of the requirements before .they can agree to it. <br> <br> Construction units into the main construction, supervision of the following key points: <br> <br> 1, equipment, materials for acceptance. Equipment, materials or bad is a smart system is .able to meet the functional requirements of a important factor is the supervision and quality control of a key point. Common materials such as tubes, wire, junction box, etc. require certification, quality books and press specification requirements for acceptance; important equipment, materials .are imported, you will need to provide proof of origin, import customs declaration, commodity inspection certification, and other related materials; special materials also require pre-installation testing, such as the five types of cable, CAT5e, fibre and other wire required the .transfer rate test, attenuation test, proximal suffer from noise testing; control network of bridges, gateways and network controller required for analog communication testing; onsite enforcement agencies, the need for analog signal action test and power testing, etc, in order to avoid installation .debugging problems with such equipment to increase the difficulty of the surface finds. This works in debugging problems: <br> <br> 2. acceptance of the construction process. In the construction process should each process according to strict specifications for acceptance, and record .. Check whether the key is: pipeline by drawings, frame settings are correct, the pipeline is horizontal even vertical compliance requirements, concealed inside the wall of the pipeline laying depth meets the requirements of the wall decoration, end hose length is reserved for the specifications ., whether the number in thread a one-to-one, distributing box installation location and inside wiring is correct, the actuator installation meets the requirements. As this project pipeline pre-construction there were not enough because the pipeline buried deep, fixed prison wall .cracking caused by <br> <br> 3. acceptance of the central control room. Central control room is the heart of intelligent systems, acceptance should be carried out in conjunction with the owners, check the central monitoring indoor equipment according to the requirements in .the tender, the layout is reasonable, beautiful, breathing space for a late development, meet the functional requirements. <br> <br> 4. relationship. Because intelligent system equipment installation need to meet certain security requirements before, to prevent the loss or .damage, the supervision necessary coordination between the parties in advance will be required to install equipment room, doors and floors, for intelligent system construction units installed convenient. Ensure that the system by following the construction, construction according to norm, smoothly into the debugging phase .. <br> <br> 4. debugging acceptance stage of management control <br> <br> Intelligent System commissioning and acceptance in construction since the inspection conducted on the basis of competency. Construction unit since the acceptance, ready system monitoring point set table ., system diagram, each floor monitoring points distribution plan, post debug logging, debugging and commissioning staff acceptance procedures, apparatus equipped with relevant information, such as supervision, supervision jointly with the newspaper owners and related units together, debugging acceptance mainly include the following: .<br> <br> 1. acceptance of the Control Center interface. <br> <br> Man-machine interface is good, the data call is straightforward, intuitive monitoring feature content is complete, the report displays easy-to-read and .print the report settings. <br> <br> 2, the control point for the independent actions and data signals, and analog signal acceptance of feedback. <br> <br> Inspection staff are divided into two groups, each with intercom in order .to contact, a group of people to see the scene the acceptance control point of the movement, a group of officers in the control center see the point of feedback signal. Under debugging acceptance procedures, check each control point, issued by the control centre of .the action signal, please check whether the correct scene of action; or the field action, check the feedback control center signal, along with a verification of whether the actions the status of implementation and the control center shows the status line, and call, print .feedback signal data for further verification. The control point for the inspection record, actions to meet the requirements for entering the joint debugging. Points of action or signal feedback does not meet the requirements, you will need to carefully check out problem, the rectification, .to acceptance, and debugging. <br> <br> 3. the system of joint commissioning <br> <br> The control point after the acceptance of debugging, debugging can be combined. Joint commissioning main check independent systemThe order of linkage is correct .that meets design linkage requirements. Interactive debugging, you can deliver. <br> <br> 4, completion stage of supervision <br> <br> Completion stage of supervision is: <br> <br> 1) verification of the completion of .the construction unit submitted information is complete, in compliance with requirements. <br> <br> 2) verification whether and on-site construction drawings. <br> <br> 3) according to the contract audit completion settlement, to the owners submit .audit observations and assist the audit work. <br> <br> 4) to supervise the construction party do the training and rehabilitation services. <br> <br> This project in the project cost control, strict, through strict cost control, achieve .the quality and progress of control, engineering in every subsystem acceptance after the portion of the total costs of 70%, in the system after the end of the final accounts audit, paid to 90 per cent of the total, would effectively guarantee the timely launch .of the entire system. <br> <br> In short, the intelligent system implementation process, the supervisor for the project four phases of the implementation of the different features, strict, must be effective, the owners of the investment to achieve maximum return ...