ID-OD discrimination sensor
First Claim
1. A sensor body for use in a pig for determining characteristics of a pipeline wall though which the pig passes, the sensor body comprising:
- a circuit board;
a single coil wrapped around the circuit board;
a microcontroller mounted to the circuit board and connected with the single coil for inducing a waveform on the coil to thereby create an eddy current in the pipeline wall adjacent the sensor body, and the microcontroller measuring changes in a characteristic of the induced waveform on the single coil that correspond to the presence of anomalies on an inside diameter of the pipeline wall, and a sensor body cover molded about the circuit board, the microcontroller and the single coil, and the sensor body cover consisting essentially of a wear resistant, non-conductive material that includes a polymer material.
1 Assignment
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Accused Products
Abstract
A sensor body for use in a pig for determining characteristics of a pipeline wall though which the pig passes includes a circuit board and a single coil wrapped around the circuit board. A microcontroller is mounted to the circuit board and connected to the single coil and configured to induce a waveform on the coil to thereby create an eddy current in the pipeline wall adjacent the sensor body. The microcontroller is also configured to measure changes in a characteristic of the induced waveform on the single coil that correspond to the presence of anomalies on an inside diameter of the pipeline wall. The sensor body also includes a sensor body cover molded about the circuit board, the microcontroller and the single coil. The sensor body cover consists essentially of a wear resistant, non-conductive material that includes a polymer material.
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Citations
20 Claims
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1. A sensor body for use in a pig for determining characteristics of a pipeline wall though which the pig passes, the sensor body comprising:
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a circuit board;
a single coil wrapped around the circuit board;
a microcontroller mounted to the circuit board and connected with the single coil for inducing a waveform on the coil to thereby create an eddy current in the pipeline wall adjacent the sensor body, and the microcontroller measuring changes in a characteristic of the induced waveform on the single coil that correspond to the presence of anomalies on an inside diameter of the pipeline wall, and a sensor body cover molded about the circuit board, the microcontroller and the single coil, and the sensor body cover consisting essentially of a wear resistant, non-conductive material that includes a polymer material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An instrument pig for analyzing anomalies in a wall of a pipeline, the pig comprising:
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a tow portion for moving the pig through the pipeline;
an instrument portion for measuring the anomalies in the pipeline wall comprising;
a plurality of arms disposed circumferentially around the instrument portion, each arm flexibly mounted on the instrument portion to allow the arm to move radially inwardly and radially outwardly to provide clearance for the pig in the event that it encounters obstructions as it travels through the pipeline;
a sensor body mounted to each arm and comprising a circuit board, a single coil wrapped around the circuit board and a microcontroller mounted to the circuit board and connected with the single coil for inducing a waveform on the coil to thereby create an eddy current in the pipeline wall adjacent the sensor body, and the microcontroller measuring changes in a characteristic of the induced waveform on the single coil that correspond to the presence of anomalies on an inside diameter of the pipeline wall, and the sensor body comprising a sensor body cover molded about the circuit board, the microcontroller and the single coil, the sensor body cover consisting essentially of a wear resistant, non-conductive material including a polymer material, and magnets mounted on the arms for generating and transmitting a magnetic field through portions of the pipeline wall adjacent the sensor body; and
,a data storage portion for storing data measured by the microcontroller. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification