Research On LoRa Data Transmission System Based On Environmental Monitoring

This paper designs and implements a data transmission system based on SX1278LoRa wireless networking for the requirements of low power consumption,long distance,and anti-interference in data transmission of environmental monitoring systems,and studies the configuration of data transmission distance and transmission speed balance in LoRa wireless networking.The main research work of this article is as follows:(1)Research on wireless data transmission system.The characteristics of environmental monitoring data transmission are analyzed,and the wireless technologies commonly used in environmental monitoring systems are compared.Designed a LoRa wireless data transmission system suitable for environmental monitoring,which consists of a terminal and a gateway.The terminal equipment includes two types of terminals a and b,among which the type a terminal can collect and transmit data,and the type b terminal can only perform data transmission as a relay terminal.(2)Research on the key factors of wireless network data transmission.Carried out the experimental study of the spreading factor,bandwidth,coding rate on the data transmission distance and speed,and obtained the key factors that affect the data transmission distance and transmission speed of the LoRa network.(3)Research on the balance of data transmission distance and speed in wireless networking.According to the different transmission distances between the terminal devices of the LoRa data transmission system,the key factors that affect the transmission speed and transmission distance are configured in different regions,which achieves a balanced configuration of the best transmission speed at a certain transmission distance and optimizes the performance of the LoRa data transmission system..(4)Design and implementation of LoRa data transmission system.The system can wirelessly transmit the ambient temperature and humidity collected by the terminal node and display it on the gateway;and at a certain transmission distance,based on the terminal's wireless signal strength,the key parameter settings by region are used to increase the transmission speed of the LoRa networking data transmission system.