- Patent Title: Displacement detecting device for structural object, sharing system of displacement of structural object, and method and program of detecting displacement of structural object
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Application No.: US15120368Application Date: 2015-01-20
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Publication No.: US10209159B2Publication Date: 2019-02-19
- Inventor: Naomi Fujisawa , Hiraku Nakamura , Masashi Imasaka , Tatsuya Sonomoto
- Applicant: Furuno Electric Co., Ltd.
- Applicant Address: JP Nishinomiya
- Assignee: Furuno Electric Co., Ltd.
- Current Assignee: Furuno Electric Co., Ltd.
- Current Assignee Address: JP Nishinomiya
- Agency: Alleman Hall Creasman & Tuttle LLP
- Priority: JP2014-031223 20140221
- International Application: PCT/JP2015/051300 WO 20150120
- International Announcement: WO2015/125532 WO 20150827
- Main IPC: G01M5/00
- IPC: G01M5/00 ; G01C15/00 ; G01S19/53 ; E01D19/00 ; E04H9/02 ; E04B1/98 ; B63B39/00

Abstract:
A displacement detecting device for a structural object is capable of accurately measuring displacement of the structural object. The displacement detecting device includes first and second attitude data calculators, a data extractor, and a displacement calculator. The first attitude data calculator calculates attitude data at a first position by using received positioning signals, and calculates a calculated time point of the attitude data of the first position based on a time of a positioning system. The second attitude data calculator calculates attitude data at a second position by using received positioning signals, and calculates a calculated time point of the attitude data of the second position based on the time of the positioning system. The displacement calculator calculates a displacement amount and a displacement direction of the structural object by using a difference between the attitude data of the first and second positions calculated at the same time point.
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