PLC based Automatic Dam Shutter Control System
PLC based Automatic Dam Shutter Control System report
Dam is a barrier that stops or restricts the flow of water or underground streams. Dam is also used to collect water or for storage of water which can be evenly distributed among different locations. The farmers are dependent on seasonal rain and after that bore-well water for their crops. The dams have tremendous potential for economic upliftment and growth. They can help in checking floods and famines, generate electricity and reduce water and power shortage, provide irrigation water to lower areas, provide drinking water in remote areas. Dams are typically constructed with a drain or similar mechanism to control water levels in an impoundment for normal maintenance or emergency purposes. A disaster is any event that causes great harm or damage, serious or sudden misfortune. Dam failures clearly fit this definition. This dam shutter open/close system using plc will overcome such circumstances, it will manage the water level of the water reservoir automatically. At two different level, water is sensed according to which the gate is closed or open. That is when the water level goes above the threshold mark point level, door opens and it raises buzzer and the solenoid valve opens. When the water level goes down the door shuts automatically.
Water scarcity has become a serious problem in the world. There are many saving system for supply water from the dam. Therefore, the opening and closing of the gate of dam is very important to save water. The opening and closing of the gate is activated according to the level of water in the dam. The control systems of the gates of dams are done manually and using programmable logic controller (PLC). There are many errors in manual method than using PLC. For medium and small dams like irrigation dams does not require such huge PLC systems. In this paper, PLC is used to control the opening and closing of the gates of dams to save water resources from the dam for irrigation purposes and efficient operation of dam gate according to the level of water and also helps in indicating about flood to people living in the surrounding. This system consists of a set of float sensors, PLC FX2N20MR, relays and DC motor. A set of float sensor is used as input signal for PLC and used to detect the level of water. PLC is used to control gate of dam according to data from float sensors. Relays are used to drive dc motor for forward and reverse direction to close and open the gate. The working of this automatic system will completely depend on the ladder diagram programming method for PLC