Is my accelerometer precise enough?

1. How precise are accelerometers?
2. Do accelerometers need calibration?
3. How do you test an accelerometer?
4. What are the limitations of accelerometer?

How precise are accelerometers?

Accelerometers can be used to make very accurate pedometers that can measure walking distance to within ±1%.

Do accelerometers need calibration?

In general, you should not need to calibrate this sensor. Each sensor is calibrated prior to being shipped. In most experiments you can simply use the default calibration, but then use the software's zeroing option and zero the sensor along the axes. Calibration may be done using the acceleration due to gravity.

How do you test an accelerometer?

Accelerometer operation and response

Most accelerometer faults can be diagnosed by measuring the bias voltage of the sensor amplifier. If the bias voltage is within correct limits the sensor is most likely operating properly. Most cabling faults can also be isolated by measuring the bias.

What are the limitations of accelerometer?

Accelerometers do not inform on body posture; thus, they cannot distinguish between sitting and standing still. However, for some populations, these are not major limitations; for example, in the WHS below that includes older women, walking is the most common physical activity.