Title:
VALIDATING OPERATION OF AN ELECTRONIC MARKER LOCATOR
Document Type and Number:
WIPO Patent Application WO/2015/049591
Kind Code:
A3
Abstract:
A locator for locating a buried electromagnetic marker is operable to generate a test signal in order to validate that the locator is operating in accordance with calibration data. The locator comprises a transmission antenna and a first reception antenna. The transmission antenna is configured to generate a first oscillatory magnetic field to couple with an electromagnetic marker and the first reception antenna is configured to receive an oscillatory magnetic field emitted by the electromagnetic marker. In order to validate the operation of the locator, the transmission antenna is configured to generate a test oscillatory magnetic field, and the first reception antenna is configured to receive the test oscillatory magnetic field and thereby generate a first detected test signal.
Inventors:
LONGLEY TIMOTHY (GB)
PEARSON RICHARD DAVID (GB)
PEARSON RICHARD DAVID (GB)
Application Number:
PCT/IB2014/002871
Publication Date:
June 18, 2015
Filing Date:
October 03, 2014
Export Citation:
Assignee:
RADIODETECTION LTD (GB)
International Classes:
G01V15/00; G01V3/10; G01V3/15; G01V13/00
Foreign References:
| EP2680044A2 | 2014-01-01 | |||
| US20100001712A1 | 2010-01-07 | |||
| US7336078B1 | 2008-02-26 | |||
| US20050030037A1 | 2005-02-10 | |||
| US5644236A | 1997-07-01 | |||
| US20070296415A1 | 2007-12-27 | |||
| US3686564A | 1972-08-22 | |||
| US20100060285A1 | 2010-03-11 |
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