| This thesis proposes and designs an Android intelligent rural system based on the Internet of things.The system uses some sensing devices with wireless sensing ability and information processing ability,and constitutes a wireless sensor network through sensor nodes and ZigBee coordinator to achieve intelligent monitoring and real-time feedback control of agriculture,household and medical system in rural areas.This paper designs the intelligent rural system from the aspects of software and hardware,and the specific contents are as follows:(1)Software part: the software part uses the Android Studio mainstream development platform to develop the mobile phone client of the system.The development content includes three modules: intelligent agriculture,intelligent family,intelligent medical treatment.It uses intelligent agricultural application sensor module and ZigBee wireless transmission module to achieve the environmental monitoring of air temperature and humidity,light intensity,carbon dioxide concentration,soil temperature and humidity and other information in the greenhouse and the remote monitoring of water pumps,fans and shutter equipment.The collected parameters are displayed in real time on the client side,which is convenient for users to view at any time,and users can also operate sensing devices accordingly.The intelligent family module collects data by installing human infrared,temperature and humidity,light intensity sensors and others in the courtyard.The user can monitor and control the home environment in the mobile phone client,making home life more convenient and intelligent.The design of intelligent medical treatment module is aimed at helping patients in users’ family who need to check their blood pressure,blood oxygen,pulse,body temperature and other vital signs for a long time.After collecting the information,the data can be saved and uploaded to the database,so that the data can be analyzed,so as to have a certain understanding of the physical condition,and take measures in advance to prevent trouble.Software design involves a lot of software compilation environment,and a detailed program flow chart is made in each part of the client with core code attached.(2)Hardware part: the hardware part includes the design of the gateway and the sensor node of the underlying devices.The gateway adopts the STM32F407 core board as the main control chip,and is equipped with a LCD touch screen,which allows users to view the collected data through the LCD touch screen,or to send control commands through the gateway.The sensor node of the underlying device is composed of ZigBee wireless transmission module and various sensors.The sensor node sends collected data to ZigBee coordinator node of the gatewaythrough ZigBee wireless transmission module and uploads them to the gateway server.A Socket connection is established between the server and the client.Users can read the underlying sensor in the mobile phone client and control the underlying devices through the client.In the process of information collection of Android intelligent rural system based on the Internet of things,use multiple sensors to collect the same data information.The data collected by multi-sensor data fusion algorithm based on Kalman filtering is filtered and processed,which makes the collected data information more realistic and improves the reliability of the whole system. |
