Earth penetrating apparatus and method employing radar imaging and rate sensing
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-025/16
E21B-025/00
출원번호
US-0037318
(2005-01-18)
발명자
/ 주소
Alft,Kevin L.
Draper,Gregory W.
Kelpe,Hans
출원인 / 주소
Vermeer Manufacturing Company
대리인 / 주소
Hollingsworth &
인용정보
피인용 횟수 :
31인용 특허 :
86
초록▼
An earth penetrating apparatus includes a cutting tool and a sensor housing. A radar unit, rate sensor unit, processor, and transmitter are provided in the sensor housing. An antenna arrangement is coupled to the radar unit and configured for transmitting and receiving electromagnetic signals in a r
An earth penetrating apparatus includes a cutting tool and a sensor housing. A radar unit, rate sensor unit, processor, and transmitter are provided in the sensor housing. An antenna arrangement is coupled to the radar unit and configured for transmitting and receiving electromagnetic signals in a relatively forward and/or lateral looking direction relative to a distal end of the cutting tool. The rate sensor unit may include one or both of a gyroscope and an accelerometer. The processor receives radar data from the radar unit indicative of subsurface strata and obstacles respectively located generally forward and/or lateral of the cutting tool, and receives displacement data from the rate sensor unit indicative of one or both of longitudinal and rotational displacement of the cutting tool. The transmitter is configured for transmitting one or both of the radar data and the displacement data to an aboveground location.
대표청구항▼
What is claimed is: 1. An earth penetrating apparatus for use with a boring machine, comprising: a cutting tool assembly comprising a cutting tool and a sensor housing; a radar unit provided in the sensor housing; an antenna arrangement coupled to the radar unit, the antenna arrangement configured
What is claimed is: 1. An earth penetrating apparatus for use with a boring machine, comprising: a cutting tool assembly comprising a cutting tool and a sensor housing; a radar unit provided in the sensor housing; an antenna arrangement coupled to the radar unit, the antenna arrangement configured for transmitting and receiving electromagnetic signals in a relatively forward looking direction relative to a distal end of the cutting tool; a rate sensor unit provided in the sensor housing, the rate sensor unit comprising one or both of a gyroscope and an accelerometer; a processor provided in the sensor housing and communicatively coupled to the radar unit and the rate sensor unit, the processor receiving radar data from the radar unit indicative of subsurface strata and obstacles respectively located generally forward of the cutting tool and receiving displacement data from the rate sensor unit indicative of one or both of longitudinal and rotational displacement of the cutting tool; and a transmitter provided in the sensor housing and coupled to the processor, the transmitter configured for transmitting one or both of the radar data and the displacement data to an aboveground location. 2. The apparatus of claim 1, wherein the rate sensor unit comprises the gyroscope and not the accelerometer. 3. The apparatus of claim 1, further comprising an above-ground locator, the processor configured to transmit data developed from the radar data and displacement data via the transmitter in a form suitable for reception by the above-ground locator. 4. The apparatus of claim 1, wherein the radar is configured to implement swept-step detection of the subsurface strata and obstacles. 5. The apparatus of claim 1, wherein the radar is configured as a ground penetrating radar integrated circuit. 6. The apparatus of claim 1, wherein the processor is configured to process raw radar data and produce a reduced set of radar data from the processes raw radar data for transmission to the aboveground location. 7. The apparatus of claim 1, further comprising a receiver provided in the sensor housing and configured to receive signals from the aboveground location. 8. The apparatus of claim 1, wherein the radar data comprises object detection data indicative of an obstacle in proximity to the cutting tool assembly, and the processor is configured to produce an alert signal in response to the obstacle detection data. 9. The apparatus of claim 1, further comprising a magnetometer provided in the sensor housing. 10. The apparatus of claim 1, further comprising a gas sensor, an acoustic sensor, a seismic sensor, or an ultrasonic sensor provided in the sensor housing. 11. The apparatus of claim 1, further comprising a resistive sensor, a capacitive sensor, a vibration sensor, a temperature sensor or a pressure sensor provided in the sensor housing. 12. The apparatus of claim 1, further comprising a magnetic or electromagnetic sonde provided in the sensor housing. 13. A method of evaluating a subsurface from an earth penetrating cutting tool, the method comprising: transmitting a radar probe signal from the cutting tool; receiving a radar return signal at the cutting tool; performing multiple-axis rate sensing in the cutting tool to produce one or both of cutting tool displacement and rotation data; processing one or both of the radar return signal and the cutting tool displacement and rotation data at the cutting tool to produce cutting tool data; and transmitting the cutting tool data from the cutting tool to an aboveground location. 14. The method of claim 13, wherein transmitting the radar probe signal and receiving the radar return signal are performed in accordance with a swept-step detection technique. 15. The method of claim 13, wherein raw radar data is processed to produce a reduced set of radar data for transmission to the aboveground location. 16. The method of claim 13, further comprising receiving signals from the aboveground location at the cutting tool. 17. The method of claim 13, further comprising displaying some or all of the cutting tool data at the aboveground location. 18. The method of claim 13, further comprising acquiring magnetometer data at the cutting tool. 19. The method of claim 13, wherein performing multiple-axis rate sensing comprises acquiring gyroscope data at the cutting tool. 20. The method of claim 13, wherein performing multiple-axis rate sensing comprises acquiring accelerometer data at the cutting tool.
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