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1. (WO2018200017) APPARATUS AND METHODS FOR OBSCURED FEATURE DETECTION

Pub. No.:    WO/2018/200017    International Application No.:    PCT/US2017/040901
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Fri Jul 07 01:59:59 CEST 2017
IPC: G01R 27/26
G01N 3/08
G01N 27/22
G01R 27/22
G01V 3/00
Applicants: FRANKLIN SENSORS INC.
Inventors: DORROUGH, David M.
TOBORG, Daniel Scott
Title: APPARATUS AND METHODS FOR OBSCURED FEATURE DETECTION
Abstract:
Obscured feature detectors and methods of detecting obscured features are disclosed. An obscured feature detector can include a plurality of sensor plates and a common plate. The sensor plates may be arranged linearly to form a sensor array. The common plate may extend along the sensor array and have a length that is shortened. An end sensor plate at an end of the sensor array has a smaller area than a non-end sensor plate that is not at the end of the sensor array. A controller coupled to the sensing circuit can analyze the capacitances measured by the sensing circuit. One or more indicators are coupled to the controller, and each can be selectively set to identify a location of an obscured feature behind a surface, or otherwise indicate variances of capacitance measurements along the sensor array. Other disclosed obscured feature detectors include a plurality of sensor plates arranged radially around a center point.