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What problems exist in weak current projects and the means to solve them?
Summarize the problems existing in the weak current project, as well as the means to solve them. In the course of doing the project, only by summing up it can we quickly accumulate experience.
Weak current engineering problems
Weak power engineering project construction can be divided into three phases, one: program design phase; two: construction management phase; three: system acceptance phase, now specified as follows:
Design phase
1. The depth of understanding of international and domestic standards is not enough, and design plans cannot be standardized;
2. No feasible planning and design based on project characteristics;
3. The depth of understanding of each subsystem in the design process is not enough, and technical selection and brand preparation are not well done;
4. In the early stage of construction, it is difficult to conduct research work according to actual business functional requirements;
5, advanced design concepts, the realization of new technologies and new standards, the professional and technical requirements of weaker engineers are higher.
6. The requirements for layout of various subsystems are not clear and cannot be continuously optimized;
Construction management stage
1. Insufficient experience of the general contractor for weak power engineering;
2. Weak electricity general contracting units failed to produce deep design and construction plans;
3, the project manager's ability and sense of responsibility is not enough, for the project schedule, quality, cost has not been well managed;
4. Failed to strictly comply with the requirements of the drawings, and lacked standardized management experience for each subsystem, including management of construction schemes, construction techniques, equipment and facilities, supplies and materials;
5. The definition of the construction interface of the weak current general package and other specialized construction units is unclear, and the control capacity of the project construction plan node is insufficient;
6, during the construction process, the cooperation between the various professions does not agree, resulting in repeated operations.
System acceptance stage
1. Some subsystems cannot meet the standards for use during trial operation and acceptance by the standard;
2. Failed to make data delivery and system use training after each system acceptance;
3. Failure to understand the installation of field devices in various systems.
Specific details
1. The position, quantity, and design scheme of each subsystem are inconsistent with the actual design;
2, weak equipment points do not match;
3. The period management and equipment supply cycle control are not strictly implemented as planned;
4, the network debugging process involves the technical configuration refinement;
5, the functional test of each subsystem meets the standard problem;
6, the debugging of the joint debugging process specification issues;
7. The coordination of construction orders involved in specific multi-construction.
Influencing the Quality Factors of Weak Electricity Engineering
1. Building a standard system
Detailed reference to international and national standards and specifications for each subsystem
2. Weak current project design
The overall design level of weak current projects affects the goal of building smart projects, including the selection of cutting-edge technologies such as information, networks, communications, and computers, as well as the control of investment in weak projects and the evaluation of investment efficiency. According to a large number of examples, investment decisions are preliminary. At the end of the design phase, the degree of impact on the project cost is about 75%. The design of the construction drawing is completed until the completion of the project.
3, weak construction management
After the design of the weak electricity scheme is completed, after the contractor determines the weak electricity contractor, implementing the plan design goal in the construction landing process is the core work of weak electric construction management. The implementation quality of the work directly affects the future intelligent application effect.
Weak power project management mainly includes construction progress control, construction quality management, construction cost management, and other three aspects. At the same time, it needs to establish an on-site organization and management mechanism for the project manager responsibility system, as well as a third-party management unit to plan formulation, implementation, inspection, and regular Analyze the project, increase or decrease projects, etc., and do a good job of management and confirmation.
4, after-sale service
After the acceptance of the design plan and project acceptance procedures, it is necessary to do a good job in the use of training, use and management responsibility of each system, the monitoring of the operating environment conditions of each subsystem, and the upgrade management of each subsystem. If the responsibility is not clear, the task is unclear. , will also affect the end-use effect.
Design phase
At the beginning of project design, in addition to the reference of international and domestic standards and guidelines, it is also necessary to select appropriate technologies to meet current and future functional requirements based on the actual needs of weak current projects, and formulate weak-voltage project construction plans.
1. Several major elements of the weak current design
(1) Analysis of weak electricity engineering needs
Only when the needs of weak current projects are clarified, can the overall weak project solutions be designed based on the demand list.
(2) Technology Selection
The key point of the weak current engineering program is to select the technology based on the life cycle of each system, including the overall network architecture selection, multi-physical link financing, cloud computing and other technical options, as well as the investigation of software and hardware suppliers, and the production of brand recommendation tables. , drawings and other forms of communication choices; After clarifying the above work contents, we can formulate standardized solutions for weak current projects, choose weak and powerful engineering contractors who have strength and experience, and submit bids in a unified way, through appropriate evaluation methods. Select strong weak electricity suppliers to complete weak current projects.
(3) Principles of Distribution of Subsystems
Every sub-system of weak current engineering requires clear requirements on the location of the terminal, the number of points, and the required conditions, such as integrated wiring system, computer network system, wireless network system, access control system, video monitoring system, comprehensive information release system, etc. The location, quantity, and implementation methods all have a profound impact on strong electricity, exchanges, and pipeline engineering. Therefore, according to the relevant national standards and the actual functional zoning and needs of the project, the principle of layout of each subsystem must be established; For example, for each additional point of invalid information, the pipeline resources, exchange resources, matching conditions, and construction costs caused by this approach are nearly one thousand yuan. If the set information points are not arranged, the follow-up can be resolved through wireless. However, in some core locations and functions, there are still some deficiencies in wireless solutions. For example, in the security system, the principle of layout will solve the problem of density and location of distribution points. With reference to various national standards, the principle of layout of various subsystems will be implemented. Refine, guide the layout of the points of each system, and Paper language description.
Construction management stage
1. Implement project manager responsibility;
2. Transform the construction drawings of the design plan and establish the language communication method in the construction process;
3. Continuous optimization of various layout principles in the construction process;
4. According to the weak current project plan, the project construction supervision shall be carried out, including not limited to product brand change, process procedure specification, construction process management, and work interface division.