WEB-BASED DATA ACQUISITION SYSTEM AND METHOD

摘要

The present invention relates to a system and method of web-based data acquisition and control for use with industrial machines, processes and equipments. In the present system a remote terminal unit (10) acts as a web client, whereas a data collecting computer unit (20) acts as a web server. The data collecting computer unit (20) includes a web server (26), a database (22) and a hypertext processor application program (24). The remote terminal unit (10) actively accesses the computer unit (20) and sends data regarding the operation conditions of an industrial machine to the computer unit (20) only if there is a change in the conditions. By this client and server communication's principle, the communication bandwidth for data acquisition and control can be used efficiently. Any new remote terminal units added to the system will be regarded by the system merely as new web clients with different identities. Therefore in such a case there will be no substantial adjustments or settings required at the data collecting computer unit side of the system.