| 摘要 |
PROBLEM TO BE SOLVED: To provide a motion sensor capable of measuring all of acceleration, angular velocity, and geomagnetism by using only a sensor element of one type and without needing calibration by an externally installed device.SOLUTION: The motion sensor includes a frame; a magnet which is supported by a spiral elastic body one end of which is fixed to the frame, and is capable of freely moving with respect to the frame; and a plurality of magnetic sensors which are fixed to the frame. The motion sensor measures the acceleration by detecting the position of the magnet with the plurality of magnetic sensors, and measures the orientation by detecting the geomagnetism. A plurality of the acceleration and orientation measurement units of such the configuration are arranged so as to calculate the angular velocity by using the measurement values of the acceleration of the plurality of acceleration and orientation measurement units.SELECTED DRAWING: Figure 1 |
