[특허]Digital video borescope for drilled shaft inspection

[미국특허] Digital video borescope for drilled shaft inspection 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04N-007/18
출원번호	US-0672430 (2007-02-07)
등록번호	US-8169477 (2012-05-01)
발명자 / 주소	Tawfiq, Kamal Mallory, Edward J. Putcha, Sastry Turner, Dan
출원인 / 주소	Florida State University Research Foundation, Inc.
대리인 / 주소	Senniger Powers LLP
인용정보	피인용 횟수 : 3 인용 특허 : 26

초록 ▼

Visual inspection of an interior surface of a borehole. A housing adapted to be lowered in the borehole supports a portable camera for generating images of a portion of the interior surface of the borehole and a light source for illuminating an area adjacent the camera. A monitor receives signals from the camera and, in response thereto, displays the images generated by the camera. A viewing envelope positioned adjacent the camera defines a viewing area adjacent the camera, particularly for use in visually inspecting slurry-filled boreholes.

대표청구항 ▼

1. A system for inspecting a borehole comprising: a portable camera for generating images of at least a portion of an interior surface of the borehole and for generating signals representative of the generated images, said camera defining a viewing area adjacent the camera from which the images are generated;a housing for the camera, said housing adapted to be lowered into the borehole;a sensor for use with the housing for sensing a physical characteristic of the borehole; anda computer receiving and responsive to the signals from the camera and the sensed physical characteristic for inspecting the borehole. 2. The system of claim 1 further comprising a light source for illuminating an area adjacent the camera within the defined viewing area thereby enabling the images of the interior surface of the borehole to be generated by the camera. 3. The system of claim 1 further comprising a monitor receiving and responsive to signals from the camera for displaying the images generated by the camera. 4. The system of claim 1 further comprising a video recorder for recording the images generated by the camera. 5. The system of claim 1 wherein the monitor comprises a computer having a display, said computer receiving the images generated by the camera and displaying the images on its display. 6. The system of claim 5 further comprising an image processor for acquiring an image of the interior surface of the borehole from the images generated by the camera and for processing the acquired image. 7. The system of claim 6 wherein the images generated by the camera each include a plurality of pixels, said pixels each having a value representative of an optical characteristic of the images, and wherein the image processor processes the acquired image of the interior surface of the borehole as a function of the pixel values. 8. The system of claim 1 further comprising a rechargeable power supply for supplying power to the camera. 9. The system of claim 1 further comprising a viewing envelope external to the housing and positioned adjacent the camera within the defined viewing area. 10. The system of claim 9 wherein the viewing envelope comprises a transparent shell defining a fluid chamber, said fluid chamber having a width less than a width of the borehole under inspection. 11. The system of claim 10 wherein the fluid chamber of the viewing envelope is filled with water. 12. The system of claim 10 wherein the fluid chamber of the viewing envelope is filled with air. 13. The system of claim 10 wherein the transparent shell comprises a rigid plastic. 14. The system of claim 10 wherein the transparent shell comprises a flexible plastic. 15. The system of claim 1 wherein the housing includes a transparent dome through which the camera has viewing access. 16. The system of claim 1 wherein the sensor comprises one or more of the following: a penetrometer for quantifying a penetration on a bottom of the borehole; a thermocouple for measuring a temperature within the borehole; an electrical meter for measuring electrical conductivity of a slurry contained in the borehole, a pressure gauge for measuring a pressure exerted on the housing by the slurry; and a load cell for measuring a buoyant weight of the camera and housing in the slurry relative to a reference weight of the camera and housing in air. 17. The system of claim 16 wherein the penetrometer comprises a probe extending into the borehole from the housing, and wherein the quantified penetration is representative of an amount of a deposit at the bottom of the borehole. 18. The system of claim 17 wherein the probe comprises a graduated bar protruding from the housing and connected to the housing by a spring, said graduated bar being adapted for deflection when pressed against the bottom of the borehole and being within the viewing area of the camera. 19. The system of claim 1 further comprising a motion control mechanism connected to the portable camera for controlling a viewing angle of the portable camera relative to an axis of the housing and comprising a rotational motion stage for tilting the viewing angle in a plane relative to the axis of the housing. 20. The system of claim 1 further comprising a motion control mechanism connected to the portable camera for controlling a viewing angle of the portable camera relative to an axis of the housing and comprising a rotational motion stage for rotating the viewing angle about the axis of the housing.

이 특허에 인용된 특허 (26) 인용/피인용 타임라인 분석

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[미국특허] Digital video borescope for drilled shaft inspection 원문보기

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[미국특허] Digital video borescope for drilled shaft inspection 원문보기

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