hello,
i am going to do project on drunk drive control in car. i am planning to fix a sensor on the steering of the car and it will be at a distance of not more than one meter from the driver's face.
my basic question is for that which sensor will be suitable for my application. the project is to be done cheaper so i need a sensor which will be cost effective and it should be available in all places
can anyone help me in this regard.... i am going to do the project in microcontroller.

 

I doubt you will be either to find something that can detect the level of intoxication or for that matter the "smell" of alcohol at that distance.

 

only the smell of alcohol is enough. this will be a simple project so no need to go in depth.
thanks for the reply.
please guide me in this regard.

 

Gas Sensors
The driver will need to at least breathe on the sensor for any result...

__________________
Mike
My website: www.ElectroBird.net

 

with the normal breathing of the driver while driving or while starting can't the sensor detect the smell.....

 

Wouldn't it also sense a drunk passenger? Or would the driver have the option to over-ride the device?

 

The car does not start until the test is finished.
This removes the distance requirement.

 

my brief explanation about my project.

According to my plan of action i need to know about the status of the driver only whether is he drunken mood or not. So if somebody else in the car is drunken and it mistakes it as driver's status and stops the vehicle means i have some other options so that the driver can prove that he is not drunken and can continue driving.

so please anyone suggest me a sensor for that.
thanks for all the replies.

 

If you turn the whole thing around it will make sense.

First, disable any starting unit in the car.

Second, have the drive blow into the tester.

Third, free motor starting or freeze it depending on the alcohol concentration in the breathing air.

That of course won't be 100% of control. If the driver stops on the way, empties a bottle of whiskey with the engine running, and continues driving that system fails.

You could of course use a timer circuit to turn off the engine after a certain time running at idle and call for a new test before restarting.

To do it the described way you just require a normal breath analyzer as used by the police.

Boncuk

BTW, I never drink while driving. I stop first.

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Proper Planning Prevents Piss Poor Performance

 

The passanger would die of alcohol poisoning before he even comes close to the concentration needed to activate the sensor from that distance in my opinion!! If the sensor detects alcohol while driving make a siren and lights and everything go off so the bastard pulls over

__________________
Mike
My website: www.ElectroBird.net

 

You would need an extremely sensitive sensor to detect the slightest hint of alchohol from that distance.

 

I'd like to see a car alcohol detector that fires a large metal spike through the drivers seat.

__________________
Bill
Smart Kits build Smart People
http://www.blueroomelectronics.com/

 

Are you about opening a hospital?

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Proper Planning Prevents Piss Poor Performance

 

No more like a morgue.

The other option is to legalize drunk driving between 3am & 4am on Highways on Saturday nights. Plus no 911 or insurance claims allowed. The flaming pit is optional.

__________________
Bill
Smart Kits build Smart People
http://www.blueroomelectronics.com/

 

Drunk driving should never be legal. However I do like the spike idea.

__________________
Mike
My website: www.ElectroBird.net