| 摘要 |
PROBLEM TO BE SOLVED: To surely measure data related to landing, even in travel.SOLUTION: A measurement device 1 comprises: an acceleration sensor 4 for measuring acceleration of a cross direction, a lateral direction, and a vertical direction for each predetermined time, for outputting acceleration signals; and a control part 8 for, on the basis of waveforms of respective acceleration signals outputted from the sensor, acquiring a timing related to movement of a leg. The control part 8 performs smoothing processing to the acceleration signal of the vertical direction, sets each timing when the waveform after performing the smoothing processing indicates a maximum value as a first reference timing, sets each timing when the waveform of a height position indicating the height position of the acceleration sensor 4 indicates a maximum value, as a second reference timing. Then, in a first search period between the second reference timing, and the first reference timing which is after the second reference timing and the closest to the second reference timing, an extreme corresponding to deceleration operation in the waveform of the acceleration signal of the cross direction is determined, and based on the timing of the extreme, a landing timing is acquired.SELECTED DRAWING: Figure 2 |
