Re: Engine On/Off Indication From Lead Acid Battery

In article <h6enpi$mo$3@xxxxxxxxxxxxxxxxxxxxxxxxxx>,
jstewart@xxxxxxxxxxx says...

eeboarder wrote:
I'm working on a system using a PIC24FJ256GB106. One task it will be doing
is monitoring the battery level of an industrial engine that charges one
12V or two 12V(24V) batteries with an alternator. These are typical
automotive batteries. The PIC also has to keep track of when the engine
goes from on to off or off to on.

Is there any way I can get an engine on/off signal just from the level of
the lead acid batteries? Otherwise, I'll have to use another component (oil
pressure switch) to get engine operational status.

No. You can't. It won't work. Bye...

However you could monitor the rotation of the flywheel with an Hall
effect sensor and that will give you a lot of information.
.

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