Design Of Intelligent Building System Based On ZigBee

Since entering the new era,the trend of diversification in the field of building intelligence has become more prominent,and the facilities and functions inside buildings have become more and more complete.People’s attention and focus on building control have begun to be intelligent,convenient and how to achieve efficient and reasonable use Transfer.With the progress of the times and the development of science and technology,high-rise buildings have sprung up like bamboo shoots after a rain.The traditional wired control system has been unable to meet the diverse needs of people.Wireless control systems have emerged as the times require,but the ensuing energy consumption is also increasing.Rising has become a very serious problem.Reducing the energy consumption of buildings and improving energy efficiency have become current research hotspots.In smart buildings,including power distribution,lighting,air conditioning,elevators,water supply and drainage systems,air conditioning accounts for the largest proportion of energy consumption,followed by lighting.Aiming at the problem of high energy consumption,a ZigBee-based intelligent building system design is proposed.The main research work completed is as follows:(1)The traditional central air-conditioning temperature control method can keep the indoor temperature fixed at a certain value,but due to artificial operation settings,the indoor temperature cannot meet the human body needs in an ideal state,and cannot be adjusted online in time.This paper combines the advantages of fuzzy controller to eliminate steady-state errors and the simple setting and timely adjustment of traditional PID,and proposes a fuzzy self-adapting PID controller based on thermal comfort index(PMV).PID parameters are set online according to wind speed.Real-time input of the control system,fuzzy inference,and calculation.Experiments show that the fuzzy adaptive tuning PID controller can achieve rapid and stable self-regulation without overshoot and oscillation,and the control effect has been significantly improved.(2)On the basis of manual control,the traditional lighting system has not achieved the expected energy-saving effect,and the use efficiency of each LED lamp has reached the maximum value(100%).This paper adopts a mathematical algorithm that uses optimization methods to find the optimal solution to the system objective function,find the extreme value,and reasonably allocate the LED brightness under the premise of meeting the lighting needs,so as to achieve energy-saving effects.And can find the best lighting strategy in a multiplayer scene.Experiments have proved that if the optimized lighting system can be used,energy can be effectively saved.(3)In view of the central air-conditioning operation in summer,the entire air-conditioning system generates more energy.In order to solve the problem of high energy consumption,this paper uses a non-linear programming algorithm to optimize the objective function and constraint conditions of the system under certain load,certain outdoor temperature and humidity conditions,and solves the problem of minimizing the energy consumption and the highest performance of the system.Optimized operating parameters of each component.Through experiments,it is concluded that the optimized system has obvious energy-saving effects after comparing with the stable flow control operation mode of the central air conditioner and the variable chilled water control flow operation mode.