Title:
LEVELING SYSTEM, AND LASER RECEIVER
Document Type and Number:
WIPO Patent Application WO/2024/071289
Kind Code:
A1
Abstract:
According to the present invention, a height difference between measurement points is measured using a laser receiver. A leveling system (1) comprises a rotating laser device (10) for emitting a laser beam (B) horizontally at a predetermined height (H) from a measurement reference point, and a laser receiver (20) for receiving the laser beam at a measurement point, wherein the laser receiver: is provided with a first vertical light receiving tube (23), a second vertical light receiving tube (25) and a horizontal light receiving tube (24) which are arranged in an H-shape and each of which comprises light receiving units disposed at both ends of a light guide, and an arithmetic processing unit (31) connected to the light receiving units; identifies a collision position (235) of the laser beam from light reception signals of the light receiving units; detects differential distances of the collision position from a central position, and detects whether each differential distance is on a plus side or a minus side of a boundary at a central position in the length of each light guide; and measures a height difference of the measurement point relative to the measurement reference point in accordance with a combination of the plus/minus of each differential distance of the first vertical light receiving tube, the second vertical light receiving tube, and the horizontal light receiving tube.
More Like This:
| WO/2005/028766 | LASER SIGHTING DEVICE AND METHOD |
| JP6374230 | Wall image acquisition device |
Inventors:
KIKUCHI TAKESHI (JP)
TAKANO YUJI (JP)
TAKANO YUJI (JP)
Application Number:
PCT/JP2023/035365
Publication Date:
April 04, 2024
Filing Date:
September 28, 2023
Export Citation:
Assignee:
TOPCON CORP (JP)
International Classes:
G01C15/00; G01C15/02
Domestic Patent References:
| WO2012059276A1 | 2012-05-10 |
Foreign References:
| EP3404361A1 | 2018-11-21 | |||
| JPH11337308A | 1999-12-10 | |||
| JP2020169921A | 2020-10-15 | |||
| JP2022519319A | 2022-03-22 |
Attorney, Agent or Firm:
AOBA INTERNATIONAL PATENT & TRADEMARK (JP)
Download PDF: