Development of SCADA using a RTU based on IoT controller

The use of SCADA systems in modern industrial processes represents a high cost to the industrial sector due to licensing payments, difficulty in connecting to RTUs from different manufacturers, support only for industrial communication protocols and limited scalability when using a structured database. In this work, a low cost SCADA system was developed, with the possibility of connecting to an RTU based on IoT technology that makes universal communication with field devices through TCP / IP and supported on a NoSQL database. We also evaluate its functionality on a traffic management process incorporating as semaphore field device, which demonstrates the versatility of the solution with response times comparable to those of any commercial alternative.