Unique Water Pump Controller
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
seminar class
Active In SP

Posts: 5,361
Joined: Feb 2011
26-02-2011, 12:50 PM

.docx   MINI PRO1.docx (Size: 198.1 KB / Downloads: 80)
The Unique Water Pump Controller mainly used for controlling (switch ON or OFF) the Pump according to the water-level of the tank. That is when the water-level is high enough, the circuit will switch ON the Pump and when the water-level is low, the circuit will switch OFF the Pump.
The main parts of this circuit are Sensor Circuit, Voltage Comparator, Switching Circuit, Relay Circuit and the Water Pump. The sensor will sense the water level by using reflection of light and then an indication is given to the non-inverting input of Voltage Comparator. The comparator produces an output corresponding to the input at the non-inverting input. The switching circuit will close or open the Relay Circuit according to the output of Comparator. The Relay Circuit controls the working of the Water Pump. That is it will close or open the N/O switch according to the state of switching circuit.
The two advantages of this circuit are, (a) The water level never goes below a particular level and (b) No modification in the water tank is required.
The Functional Block Diagram of the Unique Water Pump Controller mainly consists of five Blocks.
1. Sensor Circuit.
2. Voltage Comparator.
3. Switching Circuit.
4. Relay Circuit.
5. Water Pump.
When the water level is high enough, light from the white LEDs (LED1 through LED3) reflects to fall on LDR (Light Dependent Resistor). (Note: The light reflected from the water tank is used to control the resistance of LDR). This reduces the resistance of LDR and thereby increasing the voltage at the non-inverting input terminal (pin no.3) of the IC (µA741). This IC is used in the circuit as a voltage comparator. Resistors R4 and R5 form a potential divider to fix half of supply voltage to the inverting input (pin no.2) of IC.
Normally, when the water is full, LDR gets more of the reflected light because the distance between the water level and the face of LDR is minimal. When white light falls on LDR, the voltage at the non-inverting input of IC increases and its output goes high. This high output makes PNP transistor (BC558) non-conducting and the relay remains de-energized. Since the water-pump power supply is connected to the normally-open (N/O) contacts of relay, pumping is stopped.
When water level falls, the amount of light reflected to LDR decreases and its resistance increases. This reduces the voltage at pin 3 of IC and its output goes low. This low output from IC makes transistor conduct. Thus the relay energizes to close the N/O contacts and the motor starts pumping water.

Important Note..!

If you are not satisfied with above reply ,..Please


So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page
Tagged Pages: unique water pumps, working of water pump controller with comparator, mini project unique water pump controll, water pump controller, water level indicator by transistor resistor led, circuit explaination of unique water pump controller, water pump control relay schematic,
Popular Searches: natural water pump, disadvanages of water pump controller, unique electronics mini project, pdf of gsm based water pump controller, 3 phase water pump starter controller project, water pump controller project documentation, water wheel pump seminar pdf file,

Quick Reply
Type your reply to this message here.

Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  DESIGN ATM CONTROLLER pdf seminar flower 1 931 22-07-2016, 02:13 PM
Last Post: mkaasees
  automatic room light controller with bidirectional visitor counter project report jaseelati 0 278 02-02-2015, 03:54 PM
Last Post: jaseelati
  automatic room light controller with visitor counter jaseelati 0 273 21-01-2015, 03:40 PM
Last Post: jaseelati
  distributed power flow controller ppt jaseelati 0 258 21-01-2015, 03:21 PM
Last Post: jaseelati
  traffic light controller verilog code jaseelati 0 407 17-01-2015, 04:33 PM
Last Post: jaseelati
  automatic light controller project report jaseelati 0 391 10-01-2015, 04:31 PM
Last Post: jaseelati
  water conveyance system ppt jaseelati 0 178 09-01-2015, 02:23 PM
Last Post: jaseelati
  bomb detection robotics using embedded controller jaseelati 0 313 06-01-2015, 04:50 PM
Last Post: jaseelati
  automatic room light controller with bidirectional visitor counter pdf jaseelati 0 278 05-01-2015, 03:20 PM
Last Post: jaseelati
  automatic room light controller pdf jaseelati 0 165 23-12-2014, 02:11 PM
Last Post: jaseelati