Design And Implementation Of Split Air Conditioner Remote Centralized Control System Based On The Internet Of Things

Air conditioners are widely used in modern buildings all these years. To achieve the comfortworking environment, however, gargantuan energy consumption of such air conditioners seem to beinevitable. Now days, the research result of centralized management on central air conditioners, whichscientists and engineers have studied many years, became more and more sophisticated. Although alot of electronic companies make efforts on improving their design of different distributed airconditioners, one practical problem—reducing the overall energy consumption of a whole businessbuilding by using its distributed air conditioner in a centralized mode—is still unsolvable. On the baseof comprehensive analysis, this paper proposes a method aimed at controlling split air conditioners ofbusiness buildings in a centralized mode. By using structure and application modes of Internet ofThings (IOT), we build a long-distanced central control system special for the split air conditioners.In the first chapter, we introduce the overall scheme of system design. According to the networkmodel, this system consists of three main parts: perception nodes, central control nodes andmonitoring software of distanced control center. Perception nodes constitute the perception layer ofIOT; centralized control nodes constitute the network layer of IOT; and monitoring softwareconstitutes the application layer of IOT. Specially, the sensing nodes and the centralized control nodescan communicate with each other via the RS-485cable or micro-power wireless, while the centralizedcontrol nodes connecting with the distanced control center via Ethernet, Router and Internet.In the following chapters, we describe the details of hardware and software design in each objectof the control system and related implementation. Using Nuvoton Cortex-M0MCU as the controlcore, our perception nodes are mainly responsible for sensing data acquisition and adjusting comforttemperature. Also, the centralized control nodes, responsible for data communication between eachperception node and remote control center, choose LPC1766processor as its control core. Benefitfrom the user friendly interface of monitor software installed in dedicated computers comprising ourremote control center, users are able to monitor both environment parameters and system condition ofthe whole building. To make it more convenient, our system operations are able to be monitored andmanaged through the Android mobile phone in a real-time way.In sum, through the experimental tests, the design of centralized control node and perceivednodes satisfies the requirements that need the system to be highly reliable, inexpensive and functional.