Re: **LOW** Power applications


Tim Shoppa wrote:
Giorgis wrote:
The event can be described as a crash. Let's say I will have this
device in a car and all it will do is record when the crash will occur.

The traditional way of doing this (dating from pre-digital watches!) is
to read what the watches on the corpses say!

:-) Its a thaught but that sounds event has to be fairly terminal.


The current thaught is that it should sleep and when the event occurs
an interrupt will be generated. Now is it possible the accelerometer
record the level and some how the device wakes up, stores the value and
goes to sleep again ?

You can use the same idea as "read the watches from the corpses", just
continually store all the relevant parameters however many times a
second you need, UNTIL the trigger occurs when you stop storing.


Very power hungry


<<SNIP>>


I am leaning towards an analogue circuit that is faily low power. This
circuit will store the peak data in a capacitor until the devices wakes
up, records the data, maybe recordes the sensors for a few minutes and,
discharges the capacitor and goes to sleep.

George

.

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