Measuring Instrument And Surveying System

{
  "publication_number": "US2017350692A1",
  "country": "US",
  "kind": "A1",
  "title": "Measuring Instrument And Surveying System",
  "abstract": "The invention provides a measuring instrument, which comprises an image pickup unit for acquiring an image of a range including an object to be measured, a distance measuring unit for two-dimensionally scanning a predetermined range in synchronization with an image acquisition and for measuring, an arithmetic control unit and an attitude detecting unit for detecting a tilt angle of the image pickup unit with respect to a horizontality, wherein the arithmetic control unit associates a measurement result and a detection result of the attitude detecting unit with each pixel on a scanning locus corresponding to an acquired image.",
  "claims": [
    "1. A measuring instrument comprising: an image pickup unit for acquiring an image of a range including an object to be measured, a distance measuring unit for two-dimensionally scanning a predetermined range in synchronization with an image acquisition and for measuring, an arithmetic control unit and an attitude detecting unit for detecting a tilt angle of said image pickup unit with respect to a horizontality, wherein said arithmetic control unit associates a measurement result and a detection result of said attitude detecting unit with each pixel on a scanning locus corresponding to an acquired image. 2. The measuring instrument according to claim 1, wherein said two-dimensional scan is a closed loop. 3. The measuring instrument according to claim 1, wherein a pixel coordinate is converted into a vertical reference coordinate based on a tilt angle information detected by said attitude detecting unit, and a horizontal distance and a height information are calculated based on a scan information of pixel corresponding to said scanning locus and are added to said pixel. 4. The measuring instrument according to claim 3, wherein an image acquired is converted into an ortho-image of a horizontal plane based on said tilt angle information included in said scan information. 5. The measuring instrument according to claim 1, wherein said attitude detecting unit comprises a tilt sensor and an acceleration sensor as tilt sensors, and an output from said attitude detecting unit is a detection result from said acceleration sensor corrected based on comparison data of said tilt sensor and said acceleration sensor. 6. A surveying system comprising: a measuring instrument according to claim 1 provided on a moving body, a display device having a display unit, wherein a reference optical axis of said measuring instrument is provided tilting with respect to a horizontal plane at a predetermined angle and directed in a predetermined direction with respect to an advancing direction of said moving body, said attitude detecting unit detects a tilt angle of said reference optical axis, wherein said arithmetic control unit is configured to synthesize a measurement result provided by said distance measuring unit with an image acquired by said image pick up unit and to display on said display unit. 7. The surveying system according to claim 6, wherein said image pickup unit is configured to acquire continuous images, said distance measuring unit is configured to two-dimensionally scan a predetermined range in synchronization with a frame image constituting said continuous images, and said arithmetic control unit is configured to combine said frame images in time series. 8. The surveying system according to claim 7, wherein said arithmetic control unit is configured to calculate a moving distance and a change in height according to a movement of said moving body based on a scan information of a pixel at a point where said scanning loci cross each other in a combined image acquired by combining said frame images. 9. The surveying system according to claim 6, wherein said attitude detecting unit comprises a tilt sensor and an acceleration sensor as tilt sensors, and an output from said attitude detecting unit is a detection result from said acceleration sensor corrected based on comparison data of said tilt sensor and said acceleration sensor. 10. The surveying system according to claim 6, wherein an auxiliary representation, which facilitates a recognition of a condition of a ground surface, is superimposed on an image and displayed. 11. A surveying system comprising: a measuring instrument according to claim 2 provided on a moving body, a display device having a display unit, wherein a reference optical axis of said measuring instrument is provided tilting with respect to a horizontal plane at a predetermined angle and directed in a predetermined direction with respect to an advancing direction of said moving body, said attitude detecting unit detects a tilt angle of said reference optical axis, wherein said arithmetic control unit is configured to synthesize a measurement result provided by said distance measuring unit with an image acquired by said image pick up unit and to display on said display unit. 12. A surveying system comprising: a measuring instrument according to claim 3 provided on a moving body, a display device having a display unit, wherein a reference optical axis of said measuring instrument is provided tilting with respect to a horizontal plane at a predetermined angle and directed in a predetermined direction with respect to an advancing direction of said moving body, said attitude detecting unit detects a tilt angle of said reference optical axis, wherein said arithmetic control unit is configured to synthesize a measurement result provided by said distance measuring unit with an image acquired by said image pick up unit and to display on said display unit. 13. A surveying system comprising: a measuring instrument according to claim 4 provided on a moving body, a display device having a display unit, wherein a reference optical axis of said measuring instrument is provided tilting with respect to a horizontal plane at a predetermined angle and directed in a predetermined direction with respect to an advancing direction of said moving body, said attitude detecting unit detects a tilt angle of said reference optical axis, wherein said arithmetic control unit is configured to synthesize a measurement result provided by said distance measuring unit with an image acquired by said image pick up unit and to display on said display unit. 14. The surveying system according to claim 11, wherein said image pickup unit is configured to acquire continuous images, said distance measuring unit is configured to two-dimensionally scan a predetermined range in synchronization with a frame image constituting said continuous images, and said arithmetic control unit is configured to combine said frame images in time series. 15. The surveying system according to claim 12, wherein said image pickup unit is configured to acquire continuous images, said distance measuring unit is configured to two-dimensionally scan a predetermined range in synchronization with a frame image constituting said continuous images, and said arithmetic control unit is configured to combine said frame images in time series. 16. The surveying system according to claim 13, wherein said image pickup unit is configured to acquire continuous images, said distance measuring unit is configured to two-dimensionally scan a predetermined range in synchronization with a frame image constituting said continuous images, and said arithmetic control unit is configured to combine said frame images in time series. 17. The surveying system according to claim 14, wherein said arithmetic control unit is configured to calculate a moving distance and a change in height according to a movement of said moving body based on a scan information of a pixel at a point where said scanning loci cross each other in a combined image acquired by combining said frame images. 18. The surveying system according to claim 15, wherein said arithmetic control unit is configured to calculate a moving distance and a change in height according to a movement of said moving body based on a scan information of a pixel at a point where said scanning loci cross each other in a combined image acquired by combining said frame images. 19. The surveying system according to claim 16, wherein said arithmetic control unit is configured to calculate a moving distance and a change in height according to a movement of said moving body based on a scan information of a pixel at a point where said scanning loci cross each other in a combined image acquired by combining said frame images. 20. The surveying system according to claim 11, wherein said attitude detecting unit comprises a tilt sensor and an acceleration sensor as tilt sensors, and an output from said attitude detecting unit is a detection result from said acceleration sensor corrected based on comparison data of said tilt sensor and said acceleration sensor. 21. The surveying system according to claim 12, wherein said attitude detecting unit comprises a tilt sensor and an acceleration sensor as tilt sensors, and an output from said attitude detecting unit is a detection result from said acceleration sensor corrected based on comparison data of said tilt sensor and said acceleration sensor. 22. The surveying system according to claim 13, wherein said attitude detecting unit comprises a tilt sensor and an acceleration sensor as tilt sensors, and an output from said attitude detecting unit is a detection result from said acceleration sensor corrected based on comparison data of said tilt sensor and said acceleration sensor. 23. The surveying system according to claim 11, wherein an auxiliary representation, which facilitates a recognition of a condition of a ground surface, is superimposed on an image and displayed. 24. The surveying system according to claim 12, wherein an auxiliary representation, which facilitates a recognition of a condition of a ground surface, is superimposed on an image and displayed. 25. The surveying system according to claim 13, wherein an auxiliary representation, which facilitates a recognition of a condition of a ground surface, is superimposed on an image and displayed."
  ],
  "description_excerpt": "The present invention relates to a measuring instrument and a surveying system which can measure a construction surface in a civil engineering work or the like in a real time.\n\nIn case of carrying out the civil engineering work, a height of a construction surface (a ground surface) is important.\n\nIn the civil engineering work, e.g., in a ground leveling work of a road or a developed land or the like, a work such as embankment or cutting is performed with the use of a construction heavy machine which is a movable body, e.g., a bulldozer or a power shovel. In order to perform the civil engineering work in a predetermined state, a height of a ground surface of a target region in the civil engineering work must be known.\n\nConventionally, there is a GPS device as a position measuring device used in the civil engineering work, and the GPS device is mounted on the bulldozer. A position is measured by the GPS device, and a position of a work tool is determined from a mechanical positional relation between a mounting position of the GPS device and the work tool. An operator recognizes the height of the ground surface from the position of the work tool.\n\nIn this case, the height of the ground surface to be measured is a position of a point with which the work tool is in contact, and the operator estimates the height and a state of a ground surface ahead which is to be worked based on an visual observation. For this reason, a caution is required for the work, and there is a problem in work efficiency. In particular, the estimation is difficult on an inclined surface, and a skill is also required.",
  "cpc": [
    "G01B 11/24",
    "G01C 15/002",
    "G01C 3/00",
    "G06T 11/60",
    "G06T 2207/10024",
    "G06T 2207/10028",
    "G06T 2207/30252",
    "G06T 7/20",
    "G06T 7/30",
    "H04N 7/183"
  ],
  "ipc": [
    "G01B 11/24",
    "G01C 3/00",
    "G06T 11/60",
    "G06T 7/20",
    "H04N 7/18"
  ],
  "assignees": [
    "Topcon Corp"
  ],
  "inventors": [
    "Fumio Ohtomo",
    "Kaoru Kumagai",
    "Tetsuji Anai"
  ],
  "filing_date": "2017-05-23",
  "publication_date": "2017-12-07",
  "priority_date": "2016-06-01",
  "application_number": "US-201715602228-A",
  "family_id": "60482774",
  "cited_by_count": 15
}