Design And Implementation Of Intelligent Laboratory Building Environment Monitoring System Based On Internet Of Things

The concept of Internet of Things(IoT)has been paid attention and understanding since it was proposed.The development of the Internet of things has risen to the national strategic plan.The Internet of things connects various items to Internet through wireless sensor networks(Wireless Sensor Networks,WSNs),radio frequency identification(Radio,Identification,RFID)devices,and various sensors.The development of Internet of things has constantly prompted the public to have a new understanding of traditional networks.This new understanding has prompted traditional industries to try new possibilities.Under such a background,intelligent building technology emerged as the product of the combination of science and technology and architectural technology in the information age.At present,with the large number of experimental instruments and equipment in Colleges and universities,the maintenance and maintenance of the environmental parameters such as temperature and humidity are usually required.At the same time,with the increase of public lighting equipment,such as building corridor and corridor,the problem of energy saving and consumption reduction is more prominent.In order to solve the above problems,this topic comprehensively uses ZigBee wireless sensor network technology,3G communication technology,Based on the Internet of things,intelligent environment monitoring system for laboratory buildings is proposed.The main work of this paper is as follows:Firstly,introducing and analyzing the related theories and key technologies of the Internet of things.The definition,architecture and core technology of the Internet of things are analyzed,and the key technologies of the intelligent experimental building environment monitoring system based on the Internet of things are analyzed.The sensor technology,ZigBee technology and 3G communication technology are emphatically introduced.Secondly,introducing the overall design of the system.The system consists of three layers: perception layer,transport layer and application layer.Among them,the sensing layer uses ZigBee technology to design wireless sensor network to collect the data of the indoor space environment,such as temperature,humidity and smoke concentration data,and at the same time,the relay controls the lighting equipment at the terminal node.The transport layer makes use of the third generation mobile communication technology(3G)and ARM embedded technology to form ARM-3G gateway to realize data forwarding function.The application layer uses ARM board monitoring software and mobile application APP to form a background monitoring center to realize data monitoring and management.Thirdly,the hardware designing of the system.The hardware design of ZigBee,the hardware design of peripheral module,and the hardware design of ARM-3G gateway based on WSNs technology are also discussed.It includes: ZigBee core circuit,power supply circuit,temperature and humidity sensor circuit,smoke sensor circuit,ARM core board circuit and MF210 circuit design.Fourthly,The software implementation of the system.It includes the program design of ZigBee nodes,the design of ARM-3G gateway software and the APP software design of mobile client.Finally,the system is connected and tested.It includes two parts: environmental state data monitoring and lighting control.For example,monitoring temperature and humidity and smoke concentration,and triggering alarm when environmental data are abnormal,and remote control test of lighting equipment.