APPARATUS, SYSTEMS AND METHODS FOR LOCAL ON SITE MEASUREMENT OF CORROSION CONDITION INFORMATION WITH CONTACTLESS ELECTRODES
First Claim
1. A sensing apparatus for sensing corrosion condition information, comprising:
- a pair of contactless electrodes for placement on a coating on a surface of a structure or within or between one or more coatings on or over the surface of the structure and configured to function as sensors, which when activated, conduct a current flow at one or more frequencies,wherein impedance related data generated from the activated electrodes is associated with corrosion condition information of the structure and/or the one or more coatings.
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Abstract
A sensing device includes a pair of contactless electrodes for placement on a coating on a surface of a structure or within or between one or more coatings on or over the surface of the structure. The electrodes function as sensors when activated to generate a current flow through the electrodes at multiple different frequencies. The sensing device also includes contactless control circuitry co-located with or separate from the electrodes that transmits impedance data generated from the activated electrodes. The impedance data is associated with corrosion condition information of the structure and/or the one or more coatings. A data collection system and display system useable with the sensing device are also described.
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Citations
25 Claims
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1. A sensing apparatus for sensing corrosion condition information, comprising:
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a pair of contactless electrodes for placement on a coating on a surface of a structure or within or between one or more coatings on or over the surface of the structure and configured to function as sensors, which when activated, conduct a current flow at one or more frequencies, wherein impedance related data generated from the activated electrodes is associated with corrosion condition information of the structure and/or the one or more coatings. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A sensing system for sensing corrosion condition information, comprising:
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a sensing device including; a pair of contactless electrodes for placement on a coating on a surface of a structure or embeddable within or between one or more coatings on or over the surface of the structure, and contactless circuitry for co-location with the electrodes and having communications circuitry for wireless communication, and a data collection system configured to communicate with the sensing device, wherein the pair of contactless electrodes is configured to function as sensors when activated by the data collection system to excite current flow between the electrodes at multiple different frequencies, wherein the co-located contactless circuitry is configured to detect and convert the current flow to impedance data and transmit the impedance data to the data collection system, and wherein the impedance data is associated with a corrosion condition of the structure and/or the one or more coatings. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A method of sensing corrosion condition information, comprising:
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locating a sensing device on a coating on a surface of a structure or within or between one or more coatings on or over the surface of the structure, the sensing device including a pair of contactless electrodes; activating the pair of contactless electrodes to excite current flow between the electrodes at one or more frequencies; detecting and converting the current flow to impedance data; and providing the impedance data to a data collection system, wherein the impedance data is associated with a corrosion condition of the structure and/or the one or more coatings. - View Dependent Claims (22, 23, 24, 25)
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Specification