The Application Of Local Storage Technology In Cross-platform Mobile Real-time Data Monitoring

This topic is based on actual production needs, develop a lightweight, cross-platform monitoring software for a power plant. web monitoring software based on B/S structure in data collection exist these following problems:each communication processing the data stream consumes a lot of cyber source; each front page loads too slowly; application of monitoring software is extremely dependent on the normal use of the network. The HTML5 specification provides a new idea for solving these problems:the function of local storage and offline application. With the local storage function, you can add, delete, search, change and other functions on the client side, reduces the occupied bandwidth of network. Offline application will in addition to data outside of the webpage file cache on the local, to solve the problem of slow webpage loaded. Besides, we can save and edit the data offline, reducing the web monitoring software’s dependence on network.This paper completes the overall architecture web monitoring software which server uses Windows+node.js+Mongo DB+WebSocket underlying design, client uses JavaScript and jQuery scripting programming language and CSS+DIV page layout. This paper studies the current four kinds of local storage technology and comparative analysis. Finally the web SQL Database storage mechanism is used to realize the real-time data acquisition. The web monitoring software is tested on mobile clients designed on iOS and Android platform, and achieved the desired effect.