IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0107530
(2008-04-22)
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등록번호 |
US-7686400
(2010-04-23)
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발명자
/ 주소 |
- Fredrick, Larry D
- Medley, Dwight
- Tivas, Roy W.
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출원인 / 주소 |
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대리인 / 주소 |
Patterson, Thuente, Skaar & Christensen, P.A.
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인용정보 |
피인용 횟수 :
3 인용 특허 :
11 |
초록
▼
The invention provides, in one embodiment, a detector for a miner comprising a gamma sensing element and a light sensing element coupled to the gamma sensing element. According to the embodiment, the detector is mounted on a rotary cutter of a boring-type continuous miner such that the gamma sensing
The invention provides, in one embodiment, a detector for a miner comprising a gamma sensing element and a light sensing element coupled to the gamma sensing element. According to the embodiment, the detector is mounted on a rotary cutter of a boring-type continuous miner such that the gamma sensing element has a view of a geologic formation being mined. A mining control system is also provided, comprising a miner having at least two rotary cutters and a gamma detector on each of the at least two rotary cutters for receiving gamma emissions from a geologic formation. The mining control system also provides an accelerometer and a rate gyro, wherein the accelerometer and the rate gyro correlate the received gamma emissions with positions of the at least two rotary cutters, and a central module that utilizes the correlated readings to determine whether the cutters should be moved.
대표청구항
▼
What is claimed is: 1. A detector for a miner, comprising: a gamma sensing element; a light sensing element, coupled to said gamma sensing element; and a data processing element; wherein said detector is mounted on a rotary cutter of a boring-type continuous miner such that said gamma sensing eleme
What is claimed is: 1. A detector for a miner, comprising: a gamma sensing element; a light sensing element, coupled to said gamma sensing element; and a data processing element; wherein said detector is mounted on a rotary cutter of a boring-type continuous miner such that said gamma sensing element has a view of a geologic formation being mined; and wherein said data processing element is in a housing that is supported by a dual metallic flexible sleeve. 2. The detector of claim 1, wherein said view is in a radial direction, and said gamma sensing element has shielding from radiation in other directions. 3. The detector of claim 1, wherein said gamma sensing element comprises an elongated gamma sensing element being aligned substantially parallel with mineral beds in said geologic formation. 4. The detector of claim 1, wherein said gamma sensing element is in an armored housing. 5. The detector of claim 4, wherein said armored housing is at least ¾ of an inch thick and contains a layer of lead at least ¾ of an inch thick. 6. The detector of claim 4, further comprising a window in said armored housing to allow passage of gamma rays to said gamma sensing element. 7. The detector of claim 6, wherein said window comprises polyether ether ketone (PEEK). 8. The detector of claim 7, wherein said window comprises at least 60% carbon fiber. 9. The detector of claim 1, wherein said gamma sensing element is supported within a metallic flexible sleeve. 10. The detector of claim 9, wherein said flexible sleeve has a gap to allow passage of gamma rays. 11. The detector of claim 4, wherein said detector is placed within 12 inches of an end of a fully extended rotor arm. 12. The detector of claim 1, wherein said data processing element counts gamma ray pulses for selected periods of time. 13. The detector of claim 1, further comprising a rate gyro, and wherein said data processing element calculates an orientation of said gamma sensing element based on information from said rate gyro. 14. The detector of claim 1, further comprising an accelerometer and a rate gyro, and wherein said data processing element uses measurements from said accelerometer to provide a gravity reference for said rate gyro. 15. The detector of claim 1, further comprising an accelerometer, and wherein said data processing element averages an output of the accelerometer to calculate an orientation by assuming a fixed rate of rotation of the rotary cutter to project forward a position from a position determined by the averaged output from the accelerometer. 16. The detector of claim 13, wherein an externally supplied rotor position indication is provided as a reference for the rate gyro. 17. The detector of claim 1, wherein said data processing element receives rotor orientation information from an externally supplied source. 18. The detector of claim 1, wherein said geologic formation has multiple layers, and wherein said data processing element calculates an average of counts over a selected time period for each selected layer. 19. The detector of claim 1, further comprising an RF transmitter for transmitting data to a receiver device located on a different rotary cutter. 20. The detector of claim 1, wherein said data processing element calculates a direction to guide said rotary cutter. 21. The detector of claim 1, wherein said data processing element determines movements of said rotary cutter to align a miner with the mineral beds in the geologic formation. 22. A mining control system for a boring-type continuous miner, comprising: a rotary cutter for cutting a geologic formation composed of a plurality of layers of mineral composition, adjacent layers of the plurality of layers having boundaries there between; a detector, comprising: a gamma sensing element; a light sensing element, coupled to said gamma sensing element; wherein said detector is mounted on the rotary cutter such that said gamma sensing element has a field of view of the geologic formation being mined, wherein said field of view has a first dimension approximately perpendicular to the boundaries and a second dimension, larger than said first dimension, approximately parallel to the boundaries; and a data processing element, wherein said data processing element is in a housing that is supported by a dual metallic flexible sleeve. 23. The system of claim 22, wherein said data processing element counts gamma ray pulses for selected periods of time. 24. The system of claim 22, further comprising a rate gyro, and wherein said data processing element calculates an orientation of said gamma sensing element based on information from said rate gyro. 25. The system of claim 22, further comprising an accelerometer and a rate gyro, and wherein said data processing element uses measurements from said accelerometer to provide a gravity reference for said rate gyro. 26. The system of claim 22, further comprising an accelerometer, and wherein said data processing element averages an output of the accelerometer to calculate an orientation by assuming a fixed rate of rotation of the rotary cutter to project forward a position from a position determined by the averaged output from the accelerometer. 27. The system of claim 24, wherein an externally supplied rotor position indication is provided as a reference for the rate gyro. 28. The system of claim 22, wherein said data processing element receives rotor orientation information from an externally supplied source. 29. The system of claim 22, wherein said plurality of layers comprise selected layers, and wherein said data processing element calculates an average of counts over a selected time period for each selected layer. 30. The system of claim 22, further comprising an RF transmitter for transmitting data to a receiver device located on a different rotary cutter. 31. The system of claim 22, wherein said data processing element calculates a direction to guide said rotary cutter. 32. The system of claim 22, wherein said data processing element determines movements of said rotary cutter to align a miner with the mineral beds in the geologic formation.
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