Trenchless underground boring system with boring tool location
First Claim
1. A system for detecting a location of an underground boring tool, comprising:
- generation means, separate from the boring tool, for generating a probe signal;
producing means for producing a signature signal at the boring tool in response to the probe signal; and
detection means for detecting the location of the boring tool using the signature signal.
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Accused Products
Abstract
An apparatus and method for locating an underground boring tool using a radar-like probe and detection technique. A boring tool is provided with a device which generates a specific signature signal in response to a probe signal transmitted from above the ground. Cooperative operation between the probe signal transmitter at ground level and a signature signal generator disposed within the boring tool provides for the accurate locating of the boring tool, despite the presence of a large background signal. The signature signal produced by the boring tool may be generated either passively or actively, and in a manner which differs from the probe signal in one or more ways, including timing, frequency content, or polarization. A survey of a boring site, made either prior to or during the boring operation, provides data related to the characteristics of the ground medium subjected to the survey and the identification of underground hazards, such as buried utilities. Knowledge of ground characteristics enables estimates of boring productivity and cost to be made. Accurate surveys of planned boring pathways can be made and compared, either contemporaneously or subsequently, against the accurately measured position of the boring tool during a boring operation. The direction of the boring tool may be adjusted in response to the measured position in order to maintain the boring tool along the planned pathway and at an optimum boring rate.
174 Citations
44 Claims
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1. A system for detecting a location of an underground boring tool, comprising:
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generation means, separate from the boring tool, for generating a probe signal; producing means for producing a signature signal at the boring tool in response to the probe signal; and detection means for detecting the location of the boring tool using the signature signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An underground boring system comprising:
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a boring tool; a driving system for driving the boring tool so as to produce an underground path; a probe signal generator, separate from the boring tool, for generating a probing signal; a signature signal generator for producing a signature signal at the boring tool in response to the probing signal; and a location detector for detecting a location of the boring tool along the underground path using the signature signal. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method for detecting a location of an underground boring tool, comprising the steps of:
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generating a probe signal from a signal source separate from the boring tool; producing a signature signal at the boring tool in response to the probe signal; and detecting the location of the boring tool using the signature signal. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
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33. A system for detecting a location of an underground excavation implement, comprising:
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a first signal generator that generates a probe signal; a second signal generator that produces a signature signal at the excavation implement in response to the probe signal; and a detector that detects the location of the excavation implement using the signature signal. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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Specification