Electronic house
by Ranjith | November 4th, 2008.Water level indicator and controller
Generally overhead tanks are filled with water by operating a pump. We have no control over the level to which it may be filled. It may cause overflow or water level may remain too low when we switch OFF the pump motor. Manual operation of the motor pump starter is thus not advisable. Present circuit may be added to the existing manual starter of the pump motor so that it may be operated automatically.
Four sensor probes made up of brass or stainless steel stiff wires or rods may be hung firmly in the tank. This indicates the water level in the water tank at four steps F, H, L, E i.e., Full, Half, Low, Empty. When there is no water in the water tank the circuit automatically switches ON the pump and switches OFF when the water level comes to Full.
Probes marked E and L are hung with their bottoms near the bottom level of the tank at which we wish to start the pump. The probe F is hung with its bottom end in between those probes E and F. It is used for indication of the middle level.
Sensor H, L, F are connected with resistors R1, R2, and R3, where as probe E is directly connected to ground. Resistors R1, R2, R3 are connected to 12V supply through resistors R4, R5 and R6 respectively.
Working:
When the water level in the tank is below probes E and L, output of gate N9 is logic low and output of gate N12 is latched to logic high level. Simultaneously output of gate N11 goes logic low and is inverted by inverter. Now the output of gate N10 becomes logical high, and thus the transistor is forward biased to ON state and the relay is energized. These results in shorting of power supply contact to the pump and thus switching ON the pump motor.
As the water starts filling in the tank and ultimately touches probe F, the output of gate N11 goes high and is inverted by inverter. Now the output of gate N10 becomes logical low, and thus the transistor is reverse biased to OFF state and the relay is de-energized. These results in opening of power supply contact to the pump and thus switching OFF the pump motor.
Water level states are displayed using IC 5 and IC 6 in conjunction with 7-segment display. The display indicates F for Full, H for Half, L for Low and E for Empty level condition.
Circuit diagram of Water level indicator and controller
February 19th, 2010 at 2:05 pm
Can you please send me the details of this project?
February 25th, 2010 at 1:55 am
can u please send me the pcb drawing for each circuits fast pleaaaaaaaaaaaaase I neeeeeeeeed them???????
February 25th, 2010 at 1:58 am
al-marsa87@hotmail.com
March 2nd, 2010 at 10:40 pm
please mail the details to m_awan89@hotmail.com
March 5th, 2010 at 5:15 pm
hi,
i am interested in electronics house.so plz send me the related details of this projects.
March 24th, 2010 at 2:40 am
nice project
March 24th, 2010 at 2:46 am
I want to make it as a final year of my university project.pls send me details like circuit diagram, description, requirements,budget n physical view. pls my id: safayeth.bd@hotmail.com
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April 25th, 2010 at 4:26 pm
this is awesome project.please send me all pcb lay outs,circuit diagrams,lay out of circuits on house.functionong of remote controlled equipments.pls send me the full details about this project..thankuuuuu……my email id:rajeshkannapwf@gmail.com
April 26th, 2010 at 12:51 pm
I HAD FINISHED ALL THE BREAD BOARD CONNECTION ON THIS PROJECT, NOW I HAD TO PROCEED TOWARDS PCB DESIGN SO PLEASE SEND ME THE LAYOUT ON THIS PROJECT………..
SO PLEASE HELP ME MA EMAIL ID :punya_chettri@yahoo.com
May 30th, 2010 at 1:55 pm
Respected Person,
I am very intersted in smart house.
Please send me all detail related to smart house as soon as possible.
I shall be very thankful to you.
—mohit
June 5th, 2010 at 12:52 pm
sir,
i just want more abut electronic house concept
please relay on me,i want to make it my profession
June 5th, 2010 at 12:54 pm
sir,
i just want more abut electronic house concept
June 10th, 2010 at 2:49 pm
please send me this project . this is essential in now-days……..
June 25th, 2010 at 2:29 pm
Dear Sir,
I am so glad that I come across your site as I was looking for similar projects. It is very informative.
Please let me know if you have the layout and pcb details and if possible please mail the same to me to my above email. I will be ever grateful to you for that.
Thanks and warm regards,
Sushil Rao
July 4th, 2010 at 8:54 pm
hi, friend
this project is simply superb.iam very interested to know all details of the project.please send me the details please——–
bye.
July 20th, 2010 at 9:55 pm
i think i interested to do electronic house project…please send me as soon as possible about the details of this project including the circuit and the pic programming..thank you..