| 摘要 |
A laser scanning sensor (100) of an embodiment of the present invention includes a laser range finder (110), a scanning mechanism (120), a data acquisition portion (130), a dirt determination portion (140), an alert output control portion (150) and a memory (160). The laser range finder (110) is arranged inside a housing (101) having an opening portion, and the opening portion is covered with a lens cover (116) that can transmit laser light. In the dirt determination portion (140), a predetermined threshold to be compared with a received light level is changed based on maximum detection distance information in each measurement direction.
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