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公开(公告)号：US20170108333A1
公开(公告)日：2017-04-20
申请号：US15296317
申请日：2016-10-18
Applicant: TOPCON Corporation
Inventor： Masaki Kamiki , Goro Iwasaki , Shinji Yamaguchi , Satoshi Yanobe , Eiji Takeuchi , Yosuke Okudaira
CPC classification number: G01C9/20 , G01C9/06 , G01C2009/066
Abstract: The invention provides a tilt angle measuring device, which comprises a discoid container for including a liquid forming a free liquid surface, a light emitting source for allowing a detection light to enter the free liquid surface, a photodetector for receiving the detection light reflected on the free liquid surface and a signal processing unit for detecting a tilt of the free liquid surface based on a detection signal from the photodetector, wherein the signal processing unit sets a detection light storage time of the photodetector so that an error incidence rate of the detection signal is a predetermined value.
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公开(公告)号：US20170108334A1
公开(公告)日：2017-04-20
申请号：US15296328
申请日：2016-10-18
Applicant: TOPCON Corporation
Inventor： Masaki Kamiki , Goro Iwasaki , Shinji Yamaguchi , Satoshi Yanobe , Eiji Takeuchi , Yosuke Okudaira
CPC classification number: G01C9/20 , G01C9/06 , G01C15/008 , G01C2009/066
Abstract: The present invention provides a measuring device, which comprises a leveling unit, a measuring device main body provided on the leveling unit, a control unit, a first tilt angle measuring device for detecting a horizontality with high accuracy, and a second tilt angle measuring device for detecting a tilt angle in a wider range than a range of the first tilt angle measuring device and having a higher responsiveness than a responsiveness of the first tilt angle measuring device, wherein the control unit, the first tilt angle measuring device and the second tilt angle measuring device are provided in the measuring device main body and wherein the control unit drives the leveling unit based on a detection result of the second tilt angle measuring device, performs a rough leveling until a tilt angle detected by the second tilt angle measuring device reaches within a range in which the first tilt angle measuring device is capable of detecting and levels the measuring device main body horizontally based on a detection result of the first tilt angle measuring device.
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公开(公告)号：US10323940B2
公开(公告)日：2019-06-18
申请号：US15296317
申请日：2016-10-18
Applicant: TOPCON Corporation
Inventor： Masaki Kamiki , Goro Iwasaki , Shinji Yamaguchi , Satoshi Yanobe , Eiji Takeuchi , Yosuke Okudaira
Abstract: The invention provides a tilt angle measuring device, which comprises a discoid container for including a liquid forming a free liquid surface, a light emitting source for allowing a detection light to enter the free liquid surface, a photodetector for receiving the detection light reflected on the free liquid surface and a signal processing unit for detecting a tilt of the free liquid surface based on a detection signal from the photodetector, wherein the signal processing unit sets a detection light storage time of the photodetector so that an error incidence rate of the detection signal is a predetermined value.
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公开(公告)号：US10139224B2
公开(公告)日：2018-11-27
申请号：US15296328
申请日：2016-10-18
Applicant: TOPCON Corporation
Inventor： Masaki Kamiki , Goro Iwasaki , Shinji Yamaguchi , Satoshi Yanobe , Eiji Takeuchi , Yosuke Okudaira
Abstract: The present invention provides a measuring device, which comprises a leveling unit, a measuring device main body provided on the leveling unit, a control unit, a first tilt angle measuring device for detecting a horizontality with high accuracy, and a second tilt angle measuring device for detecting a tilt angle in a wider range than a range of the first tilt angle measuring device and having a higher responsiveness than a responsiveness of the first tilt angle measuring device, wherein the control unit, the first tilt angle measuring device and the second tilt angle measuring device are provided in the measuring device main body and wherein the control unit drives the leveling unit based on a detection result of the second tilt angle measuring device, performs a rough leveling until a tilt angle detected by the second tilt angle measuring device reaches within a range in which the first tilt angle measuring device is capable of detecting and levels the measuring device main body horizontally based on a detection result of the first tilt angle measuring device.
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