Title:
DEVICE AND METHOD FOR INSPECTING OBJECT ABOVE VEHICLE
Document Type and Number:
WIPO Patent Application WO/2017/057522
Kind Code:
A1
Abstract:
[Problem] To measure a measurement object above a vehicle such that when a plurality of rotary laser scan sensors are disposed on the roof of the vehicle within a measurement region, the laser lights do not interfere with each other. [Solution] In a case when a plurality of rotary laser scan sensors 41-44 are installed on the roof of a vehicle 9, the rotary laser scan sensors are installed in parallel along a direction substantially orthogonal to the direction in which the vehicle advances. The rotary scan directions of the rotary laser scan sensors are set so as to all be the same direction (e.g., a counterclockwise direction) with respect to the direction in which the vehicle advances. The rotary phases of the rotary laser scan sensors are set so as to differ by a phase quantity divided by the number of sensors installed. For example, the rotary laser scan sensors are subjected to synchronous control such that the phases differ by 120° when there are three sensors and by 90° when there are four sensors. The two end sensors 41, 44 of four or more rotary laser scan sensors installed in parallel are controlled to phases that do not produce interference with each other, and an inspection is made of a prescribed measurement object present above the vehicle in a region in which the laser lights do not interfere with each other.
Inventors:
TAKAHASHI ATSUHIRO (JP)
KISHI TOSHIHIDE (JP)
YAMAMOTO HIROSHI (JP)
SASAKI TOMOYA (JP)
KISHI TOSHIHIDE (JP)
YAMAMOTO HIROSHI (JP)
SASAKI TOMOYA (JP)
Application Number:
PCT/JP2016/078740
Publication Date:
April 06, 2017
Filing Date:
September 28, 2016
Export Citation:
Assignee:
HIGASHI NIPPON RYOKAKU TETSUDO (JP)
HITACHI HIGH-TECH FINE SYSTEMS CORP (JP)
HITACHI HIGH-TECH FINE SYSTEMS CORP (JP)
International Classes:
G01B11/02; B60M1/28
Domestic Patent References:
| WO2014024812A1 | 2014-02-13 |
Foreign References:
| JPS6275202A | 1987-04-07 | |||
| JPH1062120A | 1998-03-06 | |||
| JPS61151490A | 1986-07-10 | |||
| US4260899A | 1981-04-07 | |||
| JP2010175488A | 2010-08-12 |
Other References:
"8 Synchronization of two LMS2xx, LMS200/211/ 221/291 Laser Measurement Systems", TECHNICAL DESCRIPTION, SICK AG, 2007, pages 22 - 23, Retrieved from the Internet
KIM GUNZUNG ET AL.: "ANALYSIS ON THE CHARACTERISTICS OF MUTUAL INTERFERENCE BETWEEN PULSED TERRESTRIAL LIDAR SCANNERS", 2015 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS, 26 July 2015 (2015-07-26), pages 2151 - 2154, XP032806451, ISBN: 978-1-4799-7929-5
KIM GUNZUNG ET AL.: "ANALYSIS ON THE CHARACTERISTICS OF MUTUAL INTERFERENCE BETWEEN PULSED TERRESTRIAL LIDAR SCANNERS", 2015 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS, 26 July 2015 (2015-07-26), pages 2151 - 2154, XP032806451, ISBN: 978-1-4799-7929-5
Attorney, Agent or Firm:
TAKAHASHI Kozo (JP)
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