Piezoelectric inquiry

[larangel3]

I am currently working on a device which has to store and update data, and such data must be transferred from the device to a computer through a wireless interface.

My question is: Is it possible to power such a device using piezoelectric energy or any other energy harvesting method?

Edit: The piezo would replace the need for a battery, the device is fairly small, not bigger than 2.5cmx3cmx1.5cm. And the longest duration would be the time it takes to transfer the information from device to computer, so about a minute.
Light is a variable not included, neither is temperature.
Power consumption would be less than 1mA.

[Audioguru]

We do not know how much current your wireless circuit uses and for what duration. Maybe you need a huge sidewalk covered with piezo transducers and many elephants walking on them to produce the power you need. If there is light then a solar panel will provide some power. Wind? Flowing water? Heat?

[larangel3]

We do not know how much current your wireless circuit uses and for what duration. Maybe you need a huge sidewalk covered with piezo transducers and many elephants walking on them to produce the power you need. If there is light then a solar panel will provide some power. Wind? Flowing water? Heat?

Post edited.

[Audioguru]

Now you say it uses 1mA.  A piezo transducer produces high voltage but extremely low current.
Maybe if you use many large piezo transducers and flex them all a lot at the same time they can produce 1mA. Use the transducers to drive a rectifier bridge that charges a capacitor that stores the power.

[TMM]

The duty cycle and voltage of the activity would be useful to work out if its a feasible project. For example, 1mA @ 3.3v for 1min once a day and harvesting for the rest of the day is much more feasible than 1mA @ 20v for 1min every 3mins.

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