基于PLC的楼宇自动控制系统.doc

摘要 Abstract Along with the progress and development of our society, peoples living standard is being better and better, the development of urban construction is soon, at the same time, the requirements on infrastructure is more strict, building automatic control system is one of the most important aspects. The reliability, stability and economy of building automatic control system affect peoples daily work and life directly. And this also indirectly reflects the development level of a country. By monitoring, controlling and recording information of each subsystem, realizing the decentralized energy saving control and focusing on scientific management, building automatic control system provides a good working environment for building users and provides a convenient managing means for building managers, thus reduce building energy consumption and reduce management costs. Building automation system makes full use of the building operation energy, and saves the unnecessary energy consumption. Through the system, building can save energy and optimize the equipment operation, the integration control of the building mechanical and electrical equipment makes the equipment operate in the most reasonable way. At the same time, the efficient monitoring can greatly reduce equipment failure, prolong the equipment’s service life, reduce equipment maintenance costs, provide a comfortable environment, provide a perfect environment for guests to take a rest and staff to work efficiency. Using the modern intelligent control technology to integrated control each of the system equipments can greatly saves the building equipment management personnel, and avoids the equipment damage caused by human error operation. This thesis illustrates parts of the building model control system based on PLC, and the thesis analyzes the control principle and the corresponding system structure of the five controlling system in detail, they are lighting, fire protection, water pressure, entrance guard,