Accelerometer 7
Accelerometer 7 : An accelerometer is a device that measures changes in?gravitational acceleration in a device it may be installed in.?Accelerometers are used to measure acceleration, tilt and vibration in numerous devices. At rest, an accelerometer measures 1g: the earth's gravitational pull, which registers 9.81 meters per second or 32.185 feet per second. Accelerometers that use the?piezoelectric effect measure a small voltage change. Others measure?capacitance?between two components.?To sense motion in multiple directions, an accelerometer must be designed with multi-axis sensors or multiple linear axis sensors. Three linear accelerometers are adequate to measure movement in three dimensions. Applications for accelerometers include: (1) Monitoring devices in biology, engineering cars, industry, volcanology and more. (2) Guidance devices in for?telemetry?in rocketry. (3) Image orientation in?smartphones. (4) Input in smartphones,?tablets?and game controllers
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