Research On Forest Environment Monitoring System Based On LoRa Wireless Communication Network Technology

Forest is an important part of natural resources.In the 21 st century,with the economic development of our country,more and more attention has been paid to the environmental and ecological problems of forest area.With the concept of intelligent forestry put forward in C hina,the traditional forestry has been developing in the direction of informatization with the progress of science and technology,and the monitoring of forest ecological environment has been an important part of intelligent forestry.Traditional forest environment monitoring system usually adopts the communication mode based on CAN bus or Zig Bee wireless transmission based on short distance communication.However these communication modes have the problems of complex wiring and short communication distance.So it is of great significance to design a long distance and low power consumption communication mode for forest environment monitoringFirstly,this paper has studied and analyzed the wireless communication technology used in the forest enviro nment monitoring system.And summarized its advantages and disadvantages.Through the analysis of the requirements of forest environment monitoring,this paper proposed to apply the long-distance and low-power Lo Ra wireless communication technology to fore st area monitoring.According to the characteristics of forest ecological environment,a wireless network structure was designed to meet the requirements of forest application scenarios.The monitoring nodes distributed in the forest area can communicate through the star or diamond network structure to expand the monitoring range and improve the efficiency of data collection.Secondly,the whole framework of forest micro environment monitoring system based on Lo Ra wireless communication technology has been built,and the software and hardware of data acquisition and display,and wireless node communication have been designed.This paper has also introduced the chip selection,hardware circuit design and workflow of the system in detail,and built the hardware foundation for the forest monitoring system.In the software design,this paper designed the private networking communication protocol based on time division multiplexing,as well as the program designed of various functional modules such as system acquisition,communication,storage and display,and described the operation process of each functional module of the system in detail.Finally,the field test of the system was carried out.The communication distance,RSSI,packet loss rate and network communication coverage between the test nodes were tested in the field environment of forest area.The test results were analyzed.According to the test results,when the communication range was in a circular area with a radius of about 500 m and an area of 0.785 km2,the communication success rate could reach more than 95%,which was in line with the expected design results and could be achieved far in the forest environment The reliability of the system was verified by the micro environment data monitoring of distance.The forest micro environment monitoring system based on Lo Ra wireless communication technology designed in this paper achieves the expected design purpose,which was an important supplement to the wireless communication mode of forest environment monitoring,and has certain reference value for the networking of forest wireless network and forest data monitoring.At the same time,the external interface is easy to expand,provides serial port,ad,IIC,SPI and other interfaces,and has profound application prospects.