公开(公告)号：US20210278534A1

公开(公告)日：2021-09-09

申请号：US17117453

申请日：2020-12-10

申请人： OPTEX CO., LTD.

发明人： Masashi Iwasawa ,  Masashiro Morita

IPC分类号： G01S17/10 ,  G01S7/481 ,  G01S7/495 ,  G08B13/184

摘要： A laser scanning sensor includes a distance data acquisition unit which acquires distance information in each measurement direction, and a memory which stores, as background distance information, a distance of an outer periphery of the detection area in each measurement direction. The sensor also includes a mirror surface determination unit which determines the presence of a reflecting surface when the distance information in continuous measurement directions is greater by at least a predetermined distance than the corresponding background distance information, and when this state changes thereafter by at least a predetermined rate in a predetermined time, a human body determination unit which extracts a portion of the distance information that may correspond to a human body and determines whether it corresponds to a human body, and an alarm output control unit which outputs an alarm signal when the presence of the reflecting surface or the human body is confirmed.

公开(公告)号：US11899109B2

公开(公告)日：2024-02-13

申请号：US17117453

申请日：2020-12-10

申请人： OPTEX CO., LTD.

发明人： Masashi Iwasawa ,  Masashiro Morita

IPC分类号： G01S17/10 ,  G01S7/481 ,  G01S7/495 ,  G08B13/184

CPC分类号： G01S17/10 ,  G01S7/4814 ,  G01S7/4817 ,  G01S7/495 ,  G08B13/184

摘要： A laser scanning sensor includes a distance data acquisition unit which acquires distance information in each measurement direction, and a memory which stores, as background distance information, a distance of an outer periphery of the detection area in each measurement direction. The sensor also includes a mirror surface determination unit which determines the presence of a reflecting surface when the distance information in continuous measurement directions is greater by at least a predetermined distance than the corresponding background distance information, and when this state changes thereafter by at least a predetermined rate in a predetermined time, a human body determination unit which extracts a portion of the distance information that may correspond to a human body and determines whether it corresponds to a human body, and an alarm output control unit which outputs an alarm signal when the presence of the reflecting surface or the human body is confirmed.