21. March 2012
SCADA stands for Supervisory Control and Data Acquisition. This system is basically used for collecting data and information from a variety of sensors installed at remote locations or at the factory. In order to get it stored after further process, the whole collected data is sent to the central or common computer. This term is used to control and symbolize management solutions in various large and small scale industries such as power sector, production units, environmental control and most importantly water management.
SCADA includes controllers, software and the hardware such as sensors, networks and signal transmitters. These sensors are used to collect data from the origin and send to the central system. The central system has the Remote Terminal Unit (also known as RTU’s) working like its brain. RTU's are programmed to a particular set of logics and then they process the data according to that.
As far as human interference is concerned, SCADA has the Human Machine Interface (HMI) as well. This is where the complete data that has been processed can be viewed by the human. If there are any changes required, those changes can be made by the end user through the use of programmable logic controllers.
SCADA software systems are extremely useful for large scare industries such as nuclear plants as well as small scale ones, such as weather management. These systems are widely available in the market and can be modified according to the requirements at a very affordable cost.