08-16-2017, 10:22 PM
powerpoint presentation of automatic damgate control system download
Water level in a dam needs to be maintained effectively to avoid complications. This is generally performed manually which requires full time supervision by the operators & have fairly large staff complements. Moreover, the quantity of water released is hardly ever correct resulting in wastage of water & It is impossible for a man to precisely control the gates without the knowledge of exact water level and water inflow rate. The main objective of this project is to develop a mechatronics based system, which will detect the level of water and estimate the water inflow rate in a dam and thereby control the movement of gates automatically in a real-time basis which offers more flexibility. This system consists of a set of sensors connected to a stepper motor through an 8-bit microcontroller. The water level and rate of inflow is detected based on the feedback from the sensors used. Based on this data, the level of dam gate can be automatically controlled using a stepper motor.
Water level in a dam needs to be maintained effectively to avoid complications.
This is generally performed manually.
It requires full time supervision by the operators & have fairly large staff complements. IDEA PROPOSED GOD FATHER Project Details
The project consist of different operations comprising of Physical System, Mechanical system and Software Based Electronic System.
The working of this automatic system will completely depend on the ladder programming of PLC. A TANK filled up to a height of 2.5 ft.
A LEVEL SENSOR placed at a height of 3 ft.
RELAYS will be used as switches. PHYSICAL SYSTEM The main objective of this project is to develop a PLC based system, which will detect the level of water and estimate the water inflow rate in a dam and thereby control the movement of gates automatically in a real-time basis which offers more flexibility. We came up with this idea through a well known trainer Mr. Ravindra Sharma from AUTOSYS INDORE. He with his team, has implemented this system in KSHIPRA (Dewas).
The Barrage here was completed in 2011and water was retained upto 490 meters of height. (cubic meters of water)
Further guidance is given by our project guide Ms. Ishita Bhatnagar. Size: 8.5in 11in
Margin: 0.79 in
Margin-bottom: 0.08 in
10 to 30v dc supply voltage
4-20 mA or 0-10v dc analog output Ultrasonic Level Sensors Three terminal relay is used:
Ground (gnd)
Common
Positive (+V)
Gnd is connected to negative voltage, common is connected to NC (normally closed) and positive with NO(normally open).
Relay will work as switch in this context. RELAYS It consists of:
(i) Motor
Three DC motors are used.
(ii) Gates
Six gates of iron sheets are used for controlling the water level. MECHANICAL SYSTEM For ladder network, simulator of Allen Bradley i.e., RS-Logix will be used.
Level Sensor will be used as input for the ladder network and output is connected to the motor for opening and closing of gates of dam. SOFTWARE Block Diagram This system consists of a set of sensors connected to electric motor through a relay.
The water level and rate of inflow is detected based on the feedback from the sensors used.
A tank containing water in it is taken. A level indicator will be placed at certain height inside the tank to initiate the PLC ladder programming. As the water in the tank reaches the level indicator, it provides input to the PLC.
The PLC will at first open the central 2 gates.
The opening and closing of gates will be controlled using relay and motor system. That is for 2 gates we will be requiring a motor and a relay configuration. So, in all for, 6 gates there will be 3 such systems. WORKING This will take place as the 1st input of ladder will be high, it will generate an output signal switching the motor on and the relay will start opening the gate.
If the water level gets controlled with the help of these two gates, then the gates will close as the input from the indicator goes lows.
But if the level is not controlled by these gates than after a delay of 30 secs, it will provide input for the next two gates.
This consecutive opening of gates will take place till the level of water is controlled.
As the level of water is controlled, the closing of gate will take place in the same manner as the opening.
This opening and closing of gates will correspondingly help in controlling water level of the tank. It does not require full time supervision by the operator.
Effective maintainance and reduced complications.
Prevents wastage of water.
10 to 100 times higher precision, avoiding human errors.
Spontaneous output. PROS High initial installation cost.
Skilled labour required.
The system requires a permanent power supply.
Maintainence cost is high. CONS The project presents automatic dam gate control system with level sensors using PLC domain.
The proposed method is verified to be highly beneficial for industrial purpose.