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Position determination using accelerometers

Posted: 22 Oct 2009 ?? ?Print Version ?Bookmark and Share

Keywords:position determination? accelerometers position? position track?

Quite often the possibility of using accelerometers to track position is investigated. We present in this application note the considerations that must be made for using accelerometers in position determination.

Kionix MEMS linear tri-axis accelerometers function on the principle of differential capacitance. Acceleration causes displacement of a silicon structure resulting in a change in capacitance. A signal-conditioning CMO technology ASIC detects and transforms changes in capacitance into an analog output voltage, which is proportional to acceleration. These outputs can t hen be sent to a microcontroller for integration into various applications.

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