Design And Implementation Of Concentrator For Remote Monitoring System Of Facility Agriculture Based On ARM

In recent years,with the rapid development of the Internet,China's facilities agriculture has also developed rapidly.The way to adopt precise and intelligent technology to break the shackles of traditional agriculture production mode,realizing real-time remote monitoring of environmental parameters in greenhouse and improving production efficiency and management level has become an inevitable trend of today's facility agriculture.Aiming at the shortage of monitoring methods and data collection in greenhouse for collecting temperature and humidity,CO2 concentration,light intensity and so on,the remote monitoring system of greenhouse based on embedded concentrator is studied in this thesis.The overall function and structure of the monitoring system are analyzed and studied,which is divided into embedded concentrator subsystem,PC server Subsystem and the mobile APP subsystem,with the overall structure and function,software and hardware designs and communication interfaces of embedded concentrator subsystem being stressed and the key technology of data transmission in the monitoring system being studied and the corresponding function modules being designed and developed.S3C2440 development board of the Samsung Corp is used as hardware of the embedded concentrator subsystem,connecting ZigBee communication modules through RS232 to build the ZigBee wireless sensor network based on CC2530,which is used to collect and process the parameters of temperature,humidity,CO2 concentration and light intensity picked up by the nodes in the greenhouse,to send the messages to PC server in monitoring center through Ethernet and to control the rolling equipment in the greenhouse by external relay connecting to GPIO interface.The software of the system is based on embedded Linux as the development platform and the application program is programmed by QT,whose main function modules include wireless data collection,data processing,data transmission,command receiving,device control,etc.The PC server subsystem and mobile APP subsystem is mainly used to realize data transmission,storage,query and remote monitoring function.To test and verity the concentrator and the transmission function of the system,this thesis designs two main subsystems,realizing the TCP/IP connection between mobile APP and concentrator matching MySQL database,which makes it come true to check the in-greenhouse data,to warm,to set temperature parameters and to control equipment by mobile APP or PC terminal.This thesis introduces the related theory and key technology of monitoring system,designs the overall structure and function modules and the main function modules of the system are designed in detail based on the in-depth analysis of the functional requirements of the monitoring system.Finally,a verification test is carried out on the main functional modules needed for the system development,and the system is tested.The test results show that the main functions of the monitoring system have been preliminarily completed and realized.