Design And Implementation Of Real-time Monitoring System For Laboratory Safety Based On Web Configuration

The Internet of Things communication technology has flourished and has been promoted and applied in various fields.As one of the most highly popular IoT communication technologies at home and abroad,LoRa technology has received extensive attention in the field of environmental monitoring.Laboratory safety monitoring belongs to the category of indoor environmental monitoring.The monitoring system needs to promptly notify the management personnel of the parameters indicating the smog abnormality and flooding abnormality collected by the terminal,so as to avoid further expansion of the disaster situation.However,due to the limited application of existing applications and open source code,existing solutions do not have good real-time performance when implementing LoRa-based monitoring systems.Designing and implementing a monitoring system with extremely high real-time communication performance is one of the problems that need to be solved.The rapid expansion of the Internet of Things application has led to a surge in demand for application software.The traditional form of software development is"one application,one development",and the configuration software can effectively solve this inefficient development form.However,it has many disadvantages such as high price,harsh installation conditions and complicated operation.In combination with the current booming Web technology,the development of a browser-based monitoring system in the form of configuration can improve the universality and flexibility of the system,and realize the user's convenient management of the monitoring area.In response to the above requirements,this paper designs and implements a real-time monitoring system for laboratory safety based on web configuration.The main work completed is as follows:(1)Research on the monitoring system solution based on LoRa technology,focusing on the shortcomings of its communication architecture in delay,and propose to improve the communication architecture by using MQTT and WebSocket communication technology,and use NodeJS,Redis and other technologies to improve the real-time performance of the system.(2)The system web configuration customization function is realized.Combined with the Vue front-end framework,the Web configuration system page architecture and page information storage structure and mode were designed,and various component developments were completed.(3)Develop a system WebSocket connection management solution and data push strategy,and introduce RSA encryption technology to ensure that the system achieves correct,efficient and secure communication in a"one-to-many"connection.The system application layer real-time alarm scheme is designed to implement timely alarms for abnormal situations on the Web page and the APP.(4)Comprehensively test the designed system from the aspects of target function and performance.The test results show that the data communication delay of this system is up to 450ms.The system can realize the user's personalized design of the monitoring page,and the customized page system can be correctly restored and run normally.