초록 ▼

A slight motion detecting device includes a angular velocity sensor, a low pass filter, a high pass filter, an amplifier, and a CPU. The CPU differentiates an output from the angular velocity sensor so as to obtain an angular acceleration, and determines that a peak of the acceleration is obtained a

A slight motion detecting device includes a angular velocity sensor, a low pass filter, a high pass filter, an amplifier, and a CPU. The CPU differentiates an output from the angular velocity sensor so as to obtain an angular acceleration, and determines that a peak of the acceleration is obtained at the time at which the sign of the acceleration is changed, and further, calculates a zero level detection value of the angular velocity, from the peak, thereby the output of the angular velocity sensor is corrected in accordance with the zero level detection value.

대표청구항 ▼

[ What is claimed is:] [1.] A slight motion detecting device comprising:a slight motion detecting unit to detect a slight motion;an extreme value detecting unit to detect extreme values of outputs from said slight motion detecting unit;a prezero level detecting unit to detect a prezero level corresp

[ What is claimed is:] [1.] A slight motion detecting device comprising:a slight motion detecting unit to detect a slight motion;an extreme value detecting unit to detect extreme values of outputs from said slight motion detecting unit;a prezero level detecting unit to detect a prezero level corresponding to an output from said slight motion detecting unit in the case of no slight motion, in accordance with an output from said extreme value detecting unit; anda slight motion output correcting unit to correct an output from said slight motion detecting unit in accordance with a signal from said prezero level detecting unit.