[1]叶方跃,郑伟南.基于LORA无线通信的数字开关量数据传输[J].工业仪表与自动化装置,2020,(01):102-105. YE Fangyue,ZHENG Weinan.Digital switch data transmission based on LORA wireless communication[J].Industrial Instrumentation & Automation,2020,(01):102-105.
According to the real situation of the difficulties of data acquisition of switches in iron and steel enterprises, such as scattered equipment, bad environment and complex integrated wiring,and solving the practical problem of data packet loss in wireless data transmission caused by external uncontrollable factors such as electromagnetic interference,this paper proposes digital switch volime data?Transmission?based on LORA?wireless communication reliable handshake protocol.Photoelectric coupling and circuit filtering technology are used to improve the accuracy of switching data acquisition; SX1278 radio circuit is used as data transmission carrier to improve the transmission flexibility of point layout; reliable handshake protocol is used to improve the reliability of data transmission.Experiments show that the design has high reliability and flexibility in point layout.