Title:
ANGLE DETECTION SYSTEM AND ANGLE DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2020/026978
Kind Code:
A1
Abstract:
Provided is a technique whereby the angle of a measurement object in a remote location can be measured. An angle detection system (90) is provided with an encoder pattern unit (13) attached to a measurement object (14), and a surveying device (50), wherein the encoder pattern unit (13) is provided with a columnar base (13A) and an encoder pattern (13B) indicating an angle in the circumferential direction with respect to a predetermined reference direction (RD), the encoder pattern (13B) being provided on the outer circumferential surface of the base (13A), and the surveying device (50) is provided with an information acquisition unit (55) for optically acquiring information indicated by the encoder pattern (13B), and a computation control unit (64) for computing the angle of the surveying device (50) with respect to the reference direction (RD) on the basis of the information.
Inventors:
YASUTOMI SATOSHI (JP)
Application Number:
PCT/JP2019/029422
Publication Date:
February 06, 2020
Filing Date:
July 26, 2019
Export Citation:
Assignee:
TOPCON CORP (JP)
International Classes:
G01C15/00; G01C15/06; G01D5/347
Foreign References:
| US20160178406A1 | 2016-06-23 | |||
| JP2019105515A | 2019-06-27 | |||
| JP2019020209A | 2019-02-07 | |||
| JP2016145791A | 2016-08-12 | |||
| JPH07139942A | 1995-06-02 | |||
| JPS6080707A | 1985-05-08 | |||
| US20090024325A1 | 2009-01-22 | |||
| JPH05172588A | 1993-07-09 | |||
| JP2016138802A | 2016-07-13 |
Other References:
See also references of EP 3832257A4
Attorney, Agent or Firm:
YAGI Hidehito et al. (JP)
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