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Fuel Level Monitor


Moderators: Ajay, Junied , abbas1707, Arun Kumar V, pdi33, Shailesh NAYAK, ۞ TPS ۞, shyam, sashijoseph

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SANATH EMBEDDED

Sun Jun 01 2008, 07:42PM

Registered Member #2561

Joined: Tue Jul 24 2007, 11:26PM

Posts: 132
Thanked 14 times in 12 posts

Hi to all,
For my one of the project i want to continuosly measure the level of the Fuel or oil ( Liquid) in Tank. Can anyone help me in this regard.

Regrads
Sanath
Bangalore

With Regards,

Sanath Kumar
Mangalore/ Bangalore/Pune

Email: sanathmcx@rediffmail.com

" Embedded System is my Passion "

pdi33

Mon Jun 02 2008, 02:10AM

Registered Member #1329

Joined: Mon Jun 04 2007, 09:28AM

Posts: 655
Thanked 144 times in 140 posts

hi sanath,
well, ur application is tricky as the conventional (and simplest method) of level measurement by dipping two electrodes in the liquid at different levels doesnot hold good as the liquid in question is highly inflammable and the method requires to pass some current(ac or dc) through the liquid.
So, u have to go for the potentiometric type of level measurement which involves considerable mechanical arrangement which is similar to the one used in your toilet flush tank. Just as the float in the tank rises with the level in ur tank and shuts off the inlet tap , u have to connect a resistance potentiometer to the other end of the float so that the resistance of the pot varies with the level. Now just convert the resistance variation into voltage and feed it to the processing circuit.
Hope u got the idea.

* inspired to develop,developing to inspire *

shyam

Mon Jun 02 2008, 03:22AM

Registered Member #2984

Joined: Mon Aug 06 2007, 11:33AM

Posts: 723
Thanked 107 times in 103 posts

ultrasonic fluid level meters are available in the market..
u can make one yourself..

lProgress is not made by early risers or hard workers, but by LAZY people, trying to find easier ways to do the same........

SANATH EMBEDDED

Mon Jun 02 2008, 04:21PM

Registered Member #2561

Joined: Tue Jul 24 2007, 11:26PM

Posts: 132
Thanked 14 times in 12 posts

Hi guys,
Thanx so much for the valuable information.

Actually my requirements is that " Fuel level and temperatuer Monitoring and controlling system". Here I want to continuosly measure the fuel level as well as fuel temperature from the vehicle or any system and continulsy transmit this information to the owner through the mobile using GSM Technology. and if temperature exceeds that the critical value it has to shutdown the whole system with the help of relay mechanisms .For this I am loking out for the Sensor or some kind of probes that we can keep inside the fuel tank. Can anyone help me in this.

Regards
Sanath
Bangaore

" You get best out of others when you give best of yourself "

With Regards,

Sanath Kumar
Mangalore/ Bangalore/Pune

Email: sanathmcx@rediffmail.com

" Embedded System is my Passion "

Arun Kumar V

Mon Jun 02 2008, 11:06PM

Registered Member #426

Joined: Sun Jan 28 2007, 11:50PM

Posts: 452
Thanked 190 times in 160 posts

Hi Bengulurian,

chenna gidhira ?

about fuel level indicator you can make a simple four level indicator using CD4066 CMOS analog switches. but these probes need to be dipped in fuel which is the scary part, should some part smoke you'll be engulfed with fire

you can have four levels : hi,med,low,reserve

Arun

pdi33

Tue Jun 03 2008, 04:12AM

Registered Member #1329

Joined: Mon Jun 04 2007, 09:28AM

Posts: 655
Thanked 144 times in 140 posts

another method (if a discrete level measurement is acceptable) for level measurement is using the magnetic reed switches inside a hollow tube dipped inside the fuel tank which turn on when an external magnet enclosed inside a float is brought into its proximity.

* inspired to develop,developing to inspire *