Metal detector with motion sensing
First Claim
Patent Images
1. Apparatus comprising a metal detector further comprising:
- a search loop assembly comprising one or more transmit coils and one or more receive coils;
electronic circuitry communicating with the search loop assembly for detecting buried objects while sweeping the metal detector over ground, anda motion sensor connected to the metal detector and communicating with the electronic circuitry and providing movement directions and speeds to the electronic circuitrywherein the motion sensor is a one or more axis motion detector,wherein the motion information is provided by the one or more axis motion detector, andwherein operating parameters are provided, depending on loop motion to alter transmit wave forms from the one or more transmit coils, to alter filter methods, recovery speeds and self-adjusting thresholds which determine transmit signal properties and receive signal processing properties.
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Abstract
A metal detector has a motion sensor such as an accelerometer to determine direction, speed, duration and acceleration of search loop motion. The search loop motion information from the motion sensor is utilized in mode selection, signal processing, target analysis, and information display.
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Citations
24 Claims
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1. Apparatus comprising a metal detector further comprising:
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a search loop assembly comprising one or more transmit coils and one or more receive coils; electronic circuitry communicating with the search loop assembly for detecting buried objects while sweeping the metal detector over ground, and a motion sensor connected to the metal detector and communicating with the electronic circuitry and providing movement directions and speeds to the electronic circuitry wherein the motion sensor is a one or more axis motion detector, wherein the motion information is provided by the one or more axis motion detector, and wherein operating parameters are provided, depending on loop motion to alter transmit wave forms from the one or more transmit coils, to alter filter methods, recovery speeds and self-adjusting thresholds which determine transmit signal properties and receive signal processing properties. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of sensing the motion of a search loop assembly and providing motion information to an electronic circuitry comprising:
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providing a metal detector comprising; a search loop assembly comprising one or more transmit coils and one or more receive coils; the electronic circuitry communicating with the search loop assembly, wherein said electronic circuitry provides a transmit signal for the one or more transmit coils and provides receive signal processing for the one or more receive coils wherein said electronic circuitry generates target response data in response to detected buried objects while the search loop assembly is swept over ground; wherein the motion information is provided by a one or more axis motion detector; and wherein operating parameters are provided which determine transmit signal properties and receive signal processing properties, depending on loop motion to alter transmit wave forms from the one or more transmit coils, to alter filter methods, recovery speeds and self-adjusting thresholds. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification