Research On Remote Monitoring System Of B/S Mode Dynamic Equipments State Based On LoRa RF Technology

It is the general trend to develop the remote monitoring system of dynamic equipments state with rich fault diagnosis function.However,due to the constraints of hardware technology and cost,companies generally use trend state monitoring systems for daily monitoring of dynamic equipments.When the inspectors find faults,they use professional instruments for fault diagnosis.In this way,there is a problem that fastdeveloping faults can not be diagnosed in time.According to the actual needs of projects,combined with the different characteristics of trend monitoring and professional fault diagnosis,In this paper,a remote monitoring system for B/S mode dynamic equipments state based on LoRa radio frequency technology is proposed and implemented.In addition to the routine trend monitoring function,the system also has the preliminary fault diagnosis function,and has the characteristics of long communication distance and good real-time performance.The main contents of this paper are as follows:(1)In this paper,based on Lora RF technology,a scheme of B/S mode remote monitoring system for dynamic equipments state is proposed.The system consists of three parts: monitoring node,central gateway and control center.The monitoring node takes MCU,sensor and LoRa module as the core,and is responsible for data collection and instruction execution.The central gateway takes MCU,gateway module and LoRa module as the core,and is responsible for data collection and forwarding.The control center uses GatewayWorker as the core framework and cloud server as the platform.It is the control center of the monitoring system and is responsible for managing the collection,storage,analysis and display of device data.(2)A multi-protocol cooperative communication scheme suitable for this monitoring system is designed.The scheme is divided into two parts: view layer scheme and lower computer scheme.The view layer scheme separates the high and low frequency requests of the monitoring system.High frequency requests use Websocket protocol to obtain better real-time performance,and low frequency requests use HTTP protocol to reduce server pressure.The communication solution of the lower computer takes LoRa technology as the core to enhance the monitoring range of the system,and uses TCP long connection technology to ensure the real-time communication between the central gateway and the server.(3)The monitoring node,central gateway and control center is designed and implemented.The design of the monitoring node includes the determination of the monitoring parameters,the selection of sensors and the programming of the single chip microcomputer.The design of the central gateway includes the selection of the gateway and LoRa RF module,the programming of the single chip microcomputer and the tuning of the RF parameters.The design of the control center includes Worker program design,signal analysis module design,database design,equipment and user information management module design,etc.(4)A web client with cross-platform capabilities is developed.Vue responsive layout technology is the core framework of the client program.The HighCharts component is used to realize the chart display of device data.Finally,the monitoring and diagnosis function,real-time performance,response speed and communication distance of the monitoring system were tested to verify the excellent performance of the system.