Title:
DISTANCE MEASUREMENT DEVICE AND MOVING BODY
Document Type and Number:
WIPO Patent Application WO/2019/181692
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a distance measurement device capable of accurately determining the distances to various types of objects, including glass objects and thin objects, while suppressing device enlargement. This distance measurement device comprises: a light projection unit (701) for emitting projection light (L1); a movable part (73) for changing the orientation of the projection light; a reflection part (82) provided in a portion of the range over which the projection light orientation varies; a detection unit (83) for detecting the orientation of the projection light; a light reception unit (702) for receiving reflected light (L2) resulting from the reflection of the projection light by an object (OJ) outside the device or the reflection part and converting the reflected light (L2) into an electrical signal; a signal processing unit (703) for processing the electrical signal; and a control unit (704) for receiving a signal from the signal processing unit, calculating the distance to the object, and controlling the light reception unit. The control unit (704) uses information from the detection unit to detect whether the projection light is oriented toward a measurement angle range (R1) in which the projection light is projected outside the device or a reflection part range (R2) in which the projection light is projected onto the reflection part and, at all times or under a prescribed condition, varies the type of signal output from the signal processing unit (703) according to whether the measurement angle range (R1) or reflection part range (R2) is detected.
Inventors:
ISHIMARU YUTAKA (JP)
OKAMOTO SHUJI (JP)
EGAWA KAZUHO (JP)
EGAWA TOMOHIRO (JP)
SAEKI TETSUO (JP)
NAOE HITOSHI (JP)
OKAMOTO SHUJI (JP)
EGAWA KAZUHO (JP)
EGAWA TOMOHIRO (JP)
SAEKI TETSUO (JP)
NAOE HITOSHI (JP)
Application Number:
PCT/JP2019/010302
Publication Date:
September 26, 2019
Filing Date:
March 13, 2019
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
G01S7/481; G01C3/06; G01S7/486; G01S17/10
Foreign References:
| JP2012242189A | 2012-12-10 | |||
| JP2018009829A | 2018-01-18 | |||
| JP2014109686A | 2014-06-12 | |||
| JP2010203820A | 2010-09-16 | |||
| JPH06214025A | 1994-08-05 |
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