Variable blast volume air-conditioning end intelligence control system and method based on wireless sensor network

Abstract

A variable blast volume air-conditioning end intelligence control system based on wireless sensor network is characterized by mainly comprising a nested main control module, a wireless sensor network room information monitoring module, an output control module, and a mobile terminal module; the wireless sensor network room information monitoring module is connected with the nested main control module; the nested main control module is connected with the output control module and the mobile terminal module. The variable blast volume air-conditioning end intelligence control system and method can widely applied to energy saving optimization control of the central air-conditioning in various buildings, and especially suitable for variable blast volume air-conditioning energy saving optimization control in large spaces of a shopping mall, a theater, a gym or a railway station.

Description

Technical field: [0001] The invention belongs to the technical field of central air-conditioning control, and in particular relates to a wireless sensor network-based intelligent control system and method for a variable air volume air-conditioning terminal. Background technique: [0002] The central air-conditioning terminal controller is the last link of heat exchange in the central air-conditioning system, and it is also one of the most important devices in the central air-conditioning system. Especially for the variable air volume air-conditioning system with constant air supply temperature and changing air supply volume, it is of great significance to the energy saving of the air conditioning system. In addition, the wireless and multi-point data acquisition method can improve the flexibility and accuracy of the environmental representation of large air-conditioned rooms, and is also very important for maintaining the comfort of large spaces. Therefore, designing an end...

AI Technical Summary

Problems solved by technology

At present, for the selection of the controller of the terminal device of the variable air volume air-conditioning system, the existing research mostly uses ordinary single-chip microcomputers as controllers, but these single-chip microcomputers have few resources, single functions, poor control performance, and unfriendly human-computer interaction. It is suitable for conventional PID control strategies and relatively simple control functions; in terms of data collection methods, at this stage, a single, wired sensor is mostly used to collect ambient temperature and humidity. Although this data collection method is easy to implement, it is only suitable for guest rooms, etc. Independent small spaces, but for large spaces with temperature and humidity distribution characteristics such as shopping malls, theaters, gymnasiums, and railway stations, the collected single-point data cannot accurately represent the temperature and humidity of the entire space. On the other hand, complicated wiring also makes It is not flexible enough and beautiful; in terms of display and operation, most of them currently use the combination of LCD liquid crystal display and keyboard button operation. This method is beautiful in display and convenient in pressing buttons. However, once the button fails, the terminal controller will not be able to be controlled through the control panel, and the replacement of the control panel is also expensive and very inconvenient. At the same time, it can only be used to receive temperature adjustment from the control panel, not from mobile phones, etc. The control of other wireless mobile devices is very inconvenient for elderly people with mobility problems or temperature control in large air-conditioned rooms; in terms of control strategy application, in recent years, scholars at home and abroad have mainly used PID for the control of terminal devices , some also use control strategies such as fuzzy control, but for situations with nonlinearity, uncertainty, and high control precision, these control strategies have been unable to meet people's requirements for high-quality living environment and air-conditioning energy-saving efficiency

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