Posture Detecting Device And Data Acquiring Device

Patent metadata

Field	Value
Publication number	US-2016238708-A1
Application number	US-201615019393-A
Country	US
Kind code	A1
Filing date	Feb 9, 2016
Priority date	Feb 16, 2015
Publication date	Aug 18, 2016
Grant date	—

Abstract

The invention provides a posture detecting device, which comprises a tilt detecting unit as rotatably supported around two shafts perpendicular each other to an outer frame and for detecting a tilting from the horizontal, encoders provided on each of the shafts, motors provided so as to rotate each shaft, and a first arithmetic processing unit for driving/controlling the motor based on a detection result from the tilt detecting unit, wherein the first arithmetic processing unit drives the motors so that the tilt detecting unit detects the horizontal based on a signal from the tilt detecting unit when the outer frame is tilted and calculates a posture of the outer frame based on outputs of the encoders when the tilt detecting unit detects the horizontal.

First claim

1 . A posture detecting device comprising; a tilt detecting unit as rotatably supported around two shafts perpendicular each other to an outer frame and for detecting a tilting from the horizontal, encoders provided on each of said shafts, motors provided so as to rotate each shaft, and a first arithmetic processing unit for driving/controlling said motor based on a detection result from said tilt detecting unit, wherein said first arithmetic processing unit drives said motors so that said tilt detecting unit detects the horizontal based on a signal from said tilt detecting unit when said outer frame is tilted and calculates a posture of said outer frame based on outputs of said encoders when said tilt detecting unit detects the horizontal.

2 . The posture detecting device according to claim 1 , wherein said tilt detecting unit comprises a first tilt sensor for detecting the horizontal with high accuracy and a second tilt sensor for detecting the tilting in a wider range and with a response at a higher speed than said first tilt sensor, wherein said second tilt sensor detects the tilting from the horizontal as detected by said first tilt sensor and wherein said first arithmetic processing unit is configured to calculate the posture of said outer frame based on a detection signal from said second tilt sensor.

3 . A data acquiring device comprising; a light emitting element for emitting a distance measuring light, a distance measuring light projecting unit for projecting said distance measuring light, a light receiving unit for receiving a reflected distance measuring light, a photodetection element for receiving the reflected distance measuring light and for producing a photodetection signal and a distance measuring unit for performing a distance measurement based on a light receiving result from said photodetection element, further comprising said posture detecting device according to claim 1 or 2 , a first optical axis deflecting unit disposed on a projection optical axis of said distance measuring light for deflecting an optical axis of said distance measuring light at a deflection angle as required and in a direction as required, a second optical axis deflecting unit disposed on a light receiving optical axis for deflecting the reflected distance measuring light at the same deflection angle and in the same direction as said first optical axis deflecting unit and a projecting direction detecting unit for detecting a deflection angle and a deflecting direction by said first optical axis deflecting unit, wherein it is so arranged that said distance measuring light is projected through said first optical axis deflecting unit and said reflected distance measuring light is received by said photodetection element through said second optical axis deflecting unit and a three-dimensional data of a measuring point is obtained based on a distance measuring result of said distance measuring unit and a detection result of said projecting direction detecting unit, and said three-dimensional data is corrected based on the result detected by said posture detecting unit.

4 . The data acquiring device according to claim 3 , further comprising a second arithmetic processing unit and an image pickup device having an image pickup optical axis in parallel and having a known relation with said projection optical axis, wherein said second arithmetic processing unit is configured so as to acquire an image with a three-dimensional data by associating a distance measuring result obtained by said distance measuring unit with the image acquired by said image pickup device.

Assignees

• Kk Topcon

Inventors

• Ohtomo Fumio
• Kumagai Kaoru
• Osaragi Kazuki

Classifications

• G01S17/42 Primary

  Simultaneous measurement of distance and other co-ordinates (indirect measurement G01S17/46) · CPC title

• G01C15/008 Primary

  combined with inclination sensor · CPC title

• G01C9/00

  Measuring inclination, e.g. by clinometers, by levels · CPC title

• G01C9/06

  Electric or photoelectric indication or reading means · CPC title

• G01C2009/066

  optical · CPC title