A Temperature Compensation Model for Low Cost Quartz Accelerometers and Its Application in Tilt Sensing

Figure 3

Sensor output changes with roll angle, and the difference of sensor output is an approximate sine function to roll angle. The sensor output and the difference in -axis are both digitalized as in Figure 2, where one number of corresponds to 0.2 mV of the output voltage.

(a) Sensor output versus roll angle

(b) Difference of sensor output versus roll angle