| 摘要 |
<p>[Problem] To measure, with practical precision and with a simple configuration, the distance to an object with little influence of external interference or object motion. [Solution] An ultrasonic distance measuring device (1) having a control measuring unit (18) that selects a distance measurement reference point from among peaks appearing in a reception waveform of the ultrasonic wave reflected by an object to be measured and that measures the distance to an object to be measured on the basis of the distance measurement reference point, wherein the control measuring unit (18) measures the magnitude of the movement of the object to be measured from the reception waveform, calculates, as the movement maximum point, the point where the magnitude of the movement is at a maximum, and selects the peak location of the reception waveform nearest the movement maximum point as the distance measurement reference point for the current processing.</p> |
