Southwest Research Institute

Electric Power Research Institute Incorporated

Richard Franklin Tennis

Glenn M Light

Gary Lane Burkhardt

Albert Joseph Parvin, Jr

Keith Alan Bartels

Ronald Herbert Peterson

Alfred Eugene Crouch

Todd Hegert Goyen

Andrew H Stewart

Edward A Bloom

K Arun Pandey

Bernard A Clairmont

The present disclosure relates to a device and method for pipeline inspection, The inspection device may include an exciter coil capable of providing an alternating current magnetic field and producing eddy currents. A plurality of sensors may then be provided which are capable of sensing a magnetic field produced by the eddy currents and the sensors may be engaged with a sensor shoe. The sensors may then be capable of being positioned at a first distance Dwith respect to an inner pipe wall surface and capable of providing coupling to the magnetic field produced by the eddy currents. The sensor shoe may also be capable of retracting to a second distance D, wherein D&#x3c;D. The sensor shoe may be connected to a sensor support arm wherein the support arm may be pivotably attached to a fixed hub and to a control arm which control arm may then be pivotably attached to a driven hub.

Pipeline inspection using variable-diameter remote-field eddy current technology

In one embodiment the present invention provides a device for monitoring a cable, comprising an imaging device having a field of view; a target, distinguishable within the field of view of the imaging device, associated with a cable; and a computer processor connected to the imaging device for analyzing images of the target produced by the imaging device to determine a position of the cable. In another embodiment, the present invention provides a method for monitoring a cable, comprising calibrating a first image of a predetermined field of view showing a portion of a cable to be monitored; capturing a second image of the predetermined field of view; correlating the first image with the second image to determine a position of the portion of the cable within the second image; and reporting said position.

Apparatus and method for monitoring a cable

Growing community of inventors

San Antonio, TX, United States of America

Richard Franklin Tennis