Design and Control of Automatic water pump

AUTOMATIC WATER PUMP CONTROLLER:

An automatic controller of the water pump is circuit that controls the motor of the water pump. The engine is automatically turned "ON" when water falls below the lower limit in the overhead tank (OHT). Likewise, when the tank is completely loaded, it will be turned off.
Design and Control of Automatic water pump


APPLICATIONS:
  • It is possible to use automatic water level regulator in hostels, warehouses, homes, schools, industrial complexes, drainage etc. 
  • For predicted floods, it can be used. 
  • A liquid level indicator in the companies large tanks. 
  • Consumers with low power. 
  • Indicator of fuel level in cars.
AUTOMATIC WATER PUMP CONTROLLER:

COMPONENTS:

  1. HC-SR05 Ultrasonic sensor:
  2.  ARDUINO UNO:
  3.  JUMPER WIRES:
  4.   RELAY:

Working:

  1. set of functions for controlling water level are the automatic water pump controller.
  2. With a sensor in the short to establish the top level and a detector sensor built for the lower level to detect long again.
  3. Water is used to bathe and wash to drink and cook for a variety of purposes.
  4. It has an ultrasonic sensor that senses the difference between the water tank's top and bottom level and then makes the motor switch automatically using the relay.

PROCESS:

 Process of this Model is given in a below image

Design and Control of Automatic water pump

CIRCUIT DIAGRAM:

Circuit Diagram of this Model is given in below image

Design and Control of Automatic water pump

MATHEMATICAL MODEL:
Equations of the system 
  1. stable state, Qi =QO
  2. Let Q0 =∆H/R
  3. range of liquid storage in tank liquid inflow rate – liquid outflow rate. 
  4. Rate of storage of liquid in tank dH/dt. 
     Where Tank cross-sectional area
Design and Control of Automatic water pump
                                               And this C is the capacitance of the tank

Therefore 

Design and Control of Automatic water pump

So final equation is


Design and Control of Automatic water pump

Now using Laplace Transform


Design and Control of Automatic water pump

Transfer Function is 
                                         
Design and Control of Automatic water pump

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