Cloud supervisory control system based on JustIoT

The traditional industrial factory automation, the so-called SCADA (Supervisory control and data acquisition), based on OPC (OLE for Process Control) technology. In recent years, under the impact of information technology, OPC technology is now actively updated to the new standard OPC UA (Unified Architecture). SCADA and the Internet of things, in essence, are the data capture and display, there are many overlapping features. Based on the JustIoT Internet of Things system, this paper designs the bridge hardware and software to bring the operation data of old factory automation equipment into the JustIoT with OPC client or the TCP Modbus protocol. The main feature of HMI SCADA is real-time map monitoring and control. This research adds that feature to JustIoT. Tools are added to JustIoT to let users create HMI page, add graphics and animation gif, and set up the association between pictures and data points. Then, remote monitoring and control can be performed. The cloud supervisory control system has been successfully applied in the offshore wind power monitoring.