| 摘要 |
PROBLEM TO BE SOLVED: To provide an obstacle detection method which detects a person as an obstacle even if the person enters a groove in a railroad crossing, and also to provide a laser distance measuring instrument. SOLUTION: The distance measuring instrument is provided with: a light projection part 1 for projecting laser light LT; a scanning part for performing scanning with the laser light LT; a light receiving part 2 for receiving reflected laser light LR made to return by being reflected by pedestrians present in the railroad crossing; a signal processing part 3 for creating and sending pedestrian measurement data D by a light reception signal Sr from the light receiving part 2; and a control part 6 for receiving the measurement data D and outputting a measurement result. The control part 6 makes processing for sorting pedestrian measurement data D obtained continuously with a plurality of thresholds for height, and processing for recognizing pedestrians, based on height data by the thresholds for height. COPYRIGHT: (C)2011,JPO&INPIT
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