US 11,940,562 B2
Sensor apparatus, article display shelf, and production management system
Jun Uchimura, Tokyo (JP); and Hiroshi Takahashi, Kanagawa (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 16/979,672
Filed by NEC Corporation, Tokyo (JP)
PCT Filed Feb. 22, 2019, PCT No. PCT/JP2019/006858
§ 371(c)(1), (2) Date Sep. 10, 2020,
PCT Pub. No. WO2019/181367, PCT Pub. Date Sep. 26, 2019.
Claims priority of application No. 2018-050908 (JP), filed on Mar. 19, 2018.
Prior Publication US 2021/0025985 A1, Jan. 28, 2021
Int. Cl. G01S 7/481 (2006.01); A47F 5/00 (2006.01); G01S 17/88 (2006.01)
CPC G01S 7/4817 (2013.01) [A47F 5/00 (2013.01); G01S 17/88 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A sensor apparatus comprising:
a laser ranging device that scans a predetermined scan range with laser light such that at least a part of the laser light passes through a region including a predetermined detection region;
a reflection mirror that reflects at least a part of the laser light to a direction not parallel to an incident direction and is provided so that the laser light occurring after reflection passes through the detection region;
an object detector that performs first detection by using the laser light occurring before reflection by the reflection mirror and second detection by using the laser light occurring after reflection by the reflection mirror in parallel planes on an object; and
a shield object distinguisher that distinguishes a shield object from the object by comparing a distance to the object obtained by the first detection with a distance to the object obtained by the second detection.