Generalizing, the formula used to calculate the acceleration from the accelerometer readings is: The process of obtaining and converting the accelerometer readings depends on the accelerometer you are using, in my case, the ADX元45 in its basic configuration, provides 10-bit resolution for ☒g, but has several other ranges ( ☒g, ±4g, ☘g, ☑6g) and resolutions (from 10 to 13 bits depending on the range). Obtaining the pitch and roll angles is then a matter of being able to read the accelerometer, convert these readings to the g unit ( 1g = 9.8 m/s²), and apply the corresponding equations. This acceleration is measured as on the z-axis, when both pitch and roll angles are zero, but when the sensor is tilted either the x-axis or the y-axis experiences a component of the upward acceleration, whose magnitude depends on the tilt angle. As a consequence, accelerometers are incapable of measuring the acceleration of gravity, but can be used to measure the upwards acceleration that counters gravity when at rest. Voor het meten van: statische (tilt) en dynamische (bewegingen/schokken) versnelling en detectie van: tap, dubbel tap, vrije val en inactief, het wordt in veel apparaten toegepast, waaronder in mobiele telefoons en tablets (voor schermrotatie e.d.)Īccelerometers are devices that are capable of measuring the acceleration they experience relative to free-fall, the same acceleration living beings feel. Digitale uitgang van gegevens is opgemaakt als 16-bit. ADX元45 is een klein, laag vermogen, 3-assige versnellingsmeter met een hoge resolutie (13-bit) meting tot ± 16 g.
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