WO1998054600A1 - Detecting concealed pipes and cables - Google Patents
Detecting concealed pipes and cables Download PDFInfo
- Publication number
- WO1998054600A1 WO1998054600A1 PCT/GB1998/001560 GB9801560W WO9854600A1 WO 1998054600 A1 WO1998054600 A1 WO 1998054600A1 GB 9801560 W GB9801560 W GB 9801560W WO 9854600 A1 WO9854600 A1 WO 9854600A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pipe
- cable
- radar
- detector
- detecting
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/001—Acoustic presence detection
Definitions
- the present invention relates to the detection of buried or otherwise concealed pipes and cables.
- the radar can also be used to detect underground cables.
- the output of the radar is passed through a band-pass filter which selectively passes signals of the desired or selected sound frequency.
- the band-pass filter selectively passes signals at the frequency of the sounds which have been input to the pipe.
- the band-pass filter selectively passes signals at the mains frequency.
- Fig. 1 shows a known pipe detection system and has already been described; and Fig. 2 shows a pipe detection system according to an embodiment of the present invention.
- an underground pipe 20 is excited by a suitable signal.
- the excitation may be the same as has — previously been described with reference to Fig. 1, in which an audio speaker generates sounds which pass down the pipe.
- Other known methods for generating sounds in pipes may also be used.
- a detector 21 is positioned over the expected location of the pipe.
- the detector 21 has a doppler radar device 22 which detects sound signals. Thus, vibrations in the pipe 20 are detected by the radar 22.
- the output of the radar passes via line 23 to a band-pass filter 24. That band-pass filter 24 is tuned at the frequency of the signals on the pipe 20. Thus, for example, if a 275Hz pressure signal is applied to the pipe 20, the band-pass filter 24 is tuned to pass signals of that frequency.
- the signals from the band-pass filter 24 are amplified by an amplifier 25 and output from the detector 21. That output may be in the form of an audio or visual display. It may be noted that the same detector 21 may be used to detect a buried high voltage cable 30.
- the band-pass filter 24 is tuned to the frequency of the voltage on the cable 30, which will normally be mains voltage.
- the detector 21 of this embodiment is able to detect different types of underground object in the immediate vicinity of the cable 12.
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU76662/98A AU7666298A (en) | 1997-05-30 | 1998-05-28 | Detecting concealed pipes and cables |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9711219.7A GB9711219D0 (en) | 1997-05-30 | 1997-05-30 | Detecting concealed pipes and cables |
GB9711219.7 | 1997-05-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998054600A1 true WO1998054600A1 (en) | 1998-12-03 |
Family
ID=10813335
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1998/001560 WO1998054600A1 (en) | 1997-05-30 | 1998-05-28 | Detecting concealed pipes and cables |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU7666298A (en) |
GB (1) | GB9711219D0 (en) |
WO (1) | WO1998054600A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8903643B2 (en) | 2007-03-13 | 2014-12-02 | Certusview Technologies, Llc | Hand-held marking apparatus with location tracking system and methods for logging geographic location of same |
US8965700B2 (en) | 2008-10-02 | 2015-02-24 | Certusview Technologies, Llc | Methods and apparatus for generating an electronic record of environmental landmarks based on marking device actuations |
US9086277B2 (en) | 2007-03-13 | 2015-07-21 | Certusview Technologies, Llc | Electronically controlled marking apparatus and methods |
US9097522B2 (en) | 2009-08-20 | 2015-08-04 | Certusview Technologies, Llc | Methods and marking devices with mechanisms for indicating and/or detecting marking material color |
US9164033B2 (en) | 2008-10-13 | 2015-10-20 | Isis Innovation Limited | Investigation of physical properties of an object |
US9185176B2 (en) | 2009-02-11 | 2015-11-10 | Certusview Technologies, Llc | Methods and apparatus for managing locate and/or marking operations |
US9488573B2 (en) | 2011-09-23 | 2016-11-08 | Isis Innovation Limited | Acousto-electromagnetic investigation of physical properties of an object |
US9542863B2 (en) | 2008-10-02 | 2017-01-10 | Certusview Technologies, Llc | Methods and apparatus for generating output data streams relating to underground utility marking operations |
CN108286654A (en) * | 2017-12-20 | 2018-07-17 | 北京华航无线电测量研究所 | A kind of pipeline inspection device and method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01195385A (en) * | 1988-01-29 | 1989-08-07 | Japan Radio Co Ltd | Hybrid investigation method for material buried in ground |
US5127267A (en) * | 1991-01-18 | 1992-07-07 | Southern California Gas Company | Acoustic method for locating concealed pipe |
-
1997
- 1997-05-30 GB GBGB9711219.7A patent/GB9711219D0/en not_active Ceased
-
1998
- 1998-05-28 AU AU76662/98A patent/AU7666298A/en not_active Abandoned
- 1998-05-28 WO PCT/GB1998/001560 patent/WO1998054600A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01195385A (en) * | 1988-01-29 | 1989-08-07 | Japan Radio Co Ltd | Hybrid investigation method for material buried in ground |
US5127267A (en) * | 1991-01-18 | 1992-07-07 | Southern California Gas Company | Acoustic method for locating concealed pipe |
Non-Patent Citations (2)
Title |
---|
M. WARD: "Radar homes in on wasted water", NEW SCIENTIST, 19 April 1997 (1997-04-19), London, England, pages 22, XP002075989 * |
PATENT ABSTRACTS OF JAPAN vol. 013, no. 488 (P - 954) 7 November 1989 (1989-11-07) * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8903643B2 (en) | 2007-03-13 | 2014-12-02 | Certusview Technologies, Llc | Hand-held marking apparatus with location tracking system and methods for logging geographic location of same |
US9086277B2 (en) | 2007-03-13 | 2015-07-21 | Certusview Technologies, Llc | Electronically controlled marking apparatus and methods |
US8965700B2 (en) | 2008-10-02 | 2015-02-24 | Certusview Technologies, Llc | Methods and apparatus for generating an electronic record of environmental landmarks based on marking device actuations |
US9542863B2 (en) | 2008-10-02 | 2017-01-10 | Certusview Technologies, Llc | Methods and apparatus for generating output data streams relating to underground utility marking operations |
US9164033B2 (en) | 2008-10-13 | 2015-10-20 | Isis Innovation Limited | Investigation of physical properties of an object |
US9185176B2 (en) | 2009-02-11 | 2015-11-10 | Certusview Technologies, Llc | Methods and apparatus for managing locate and/or marking operations |
US9097522B2 (en) | 2009-08-20 | 2015-08-04 | Certusview Technologies, Llc | Methods and marking devices with mechanisms for indicating and/or detecting marking material color |
US9488573B2 (en) | 2011-09-23 | 2016-11-08 | Isis Innovation Limited | Acousto-electromagnetic investigation of physical properties of an object |
CN108286654A (en) * | 2017-12-20 | 2018-07-17 | 北京华航无线电测量研究所 | A kind of pipeline inspection device and method |
Also Published As
Publication number | Publication date |
---|---|
GB9711219D0 (en) | 1997-07-23 |
AU7666298A (en) | 1998-12-30 |
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