CH676051A5 - - Google Patents

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Publication number
CH676051A5
CH676051A5 CH53088A CH53088A CH676051A5 CH 676051 A5 CH676051 A5 CH 676051A5 CH 53088 A CH53088 A CH 53088A CH 53088 A CH53088 A CH 53088A CH 676051 A5 CH676051 A5 CH 676051A5
Authority
CH
Switzerland
Prior art keywords
metal detector
signal
detector according
magnetic field
measuring part
Prior art date
Application number
CH53088A
Other languages
German (de)
English (en)
Inventor
Dieter Alex Rufer
Walter Egger
Original Assignee
Egco Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Egco Ag filed Critical Egco Ag
Priority to CH53088A priority Critical patent/CH676051A5/de
Priority to PCT/CH1989/000022 priority patent/WO1989007775A1/fr
Priority to EP19890901835 priority patent/EP0360845A1/fr
Publication of CH676051A5 publication Critical patent/CH676051A5/de

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
    • G01V3/101—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/15—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for use during transport, e.g. by a person, vehicle or boat

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Electromagnetism (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
CH53088A 1988-02-12 1988-02-12 CH676051A5 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CH53088A CH676051A5 (fr) 1988-02-12 1988-02-12
PCT/CH1989/000022 WO1989007775A1 (fr) 1988-02-12 1989-02-09 Detecteur de metaux
EP19890901835 EP0360845A1 (fr) 1988-02-12 1989-02-09 Detecteur de metaux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH53088A CH676051A5 (fr) 1988-02-12 1988-02-12

Publications (1)

Publication Number Publication Date
CH676051A5 true CH676051A5 (fr) 1990-11-30

Family

ID=4189118

Family Applications (1)

Application Number Title Priority Date Filing Date
CH53088A CH676051A5 (fr) 1988-02-12 1988-02-12

Country Status (3)

Country Link
EP (1) EP0360845A1 (fr)
CH (1) CH676051A5 (fr)
WO (1) WO1989007775A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11337337A (ja) * 1998-04-22 1999-12-10 Hilti Ag マ―キング装置
EP0837344A3 (fr) * 1996-10-16 2000-12-20 Firma Ing. Klaus Ebinger Procédé et dispositif pour détecter d'objets métalliques
DE102008058457A1 (de) * 2008-11-21 2010-06-02 Hilti Aktiengesellschaft Verfahren und handgeführter Sensor mit adaptiver Detektionsschwelle zur Detektion von in Bauwerkuntergründen eingebetteten Fremdobjekten
EP1722251A3 (fr) * 2005-05-10 2013-04-03 HILTI Aktiengesellschaft Détecteur souterrain à balayage manuel

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8907090D0 (en) * 1989-03-29 1989-05-10 British Gas Plc Vehicle with plastics suspension
GB2257528A (en) * 1991-06-18 1993-01-13 Colebrand Ltd Locating the position of ferrous reinforcement in a structure
EP0529181A3 (en) * 1991-08-28 1993-05-26 Nishimatsu Construction Co., Ltd. Method and system for searching reinforcing steel in concrete
DE4200518A1 (de) * 1992-01-11 1993-07-15 Bosch Gmbh Robert Metallsuchdetektor
FR2715477B1 (fr) * 1994-01-21 1996-04-12 Crouzet Automatismes Détecteur de proximité inductif redondant.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE508347C (de) * 1930-09-27 Siegmund Deutsch Vorrichtung zum Aufsuchen und Anzeigen der Eiseneinlagen in fertigen Eisenbetonbauwerken
US2874349A (en) * 1955-06-02 1959-02-17 Henry N Staats Apparatus for detecting and measuring the depth of reinforcing rods
US3820010A (en) * 1971-03-11 1974-06-25 G Sudmeier Subsurface continuous-wave exploration system
FR2547659A1 (fr) * 1983-06-20 1984-12-21 Clausin Jacques Detecteurs d'objets metalliques indiquant : la distance, la taille et la matiere
US4500749A (en) * 1982-12-14 1985-02-19 Behrokh Khoshnevis Incremental digitizer for encoding geometrical forms
GB2166872A (en) * 1984-08-16 1986-05-14 Wardell Transport Limited Assessing condition of hidden elements

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE508347C (de) * 1930-09-27 Siegmund Deutsch Vorrichtung zum Aufsuchen und Anzeigen der Eiseneinlagen in fertigen Eisenbetonbauwerken
US2874349A (en) * 1955-06-02 1959-02-17 Henry N Staats Apparatus for detecting and measuring the depth of reinforcing rods
US3820010A (en) * 1971-03-11 1974-06-25 G Sudmeier Subsurface continuous-wave exploration system
US4500749A (en) * 1982-12-14 1985-02-19 Behrokh Khoshnevis Incremental digitizer for encoding geometrical forms
FR2547659A1 (fr) * 1983-06-20 1984-12-21 Clausin Jacques Detecteurs d'objets metalliques indiquant : la distance, la taille et la matiere
GB2166872A (en) * 1984-08-16 1986-05-14 Wardell Transport Limited Assessing condition of hidden elements

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0837344A3 (fr) * 1996-10-16 2000-12-20 Firma Ing. Klaus Ebinger Procédé et dispositif pour détecter d'objets métalliques
JPH11337337A (ja) * 1998-04-22 1999-12-10 Hilti Ag マ―キング装置
EP0952465A3 (fr) * 1998-04-22 2002-03-20 HILTI Aktiengesellschaft Dispositif de marquage
EP1722251A3 (fr) * 2005-05-10 2013-04-03 HILTI Aktiengesellschaft Détecteur souterrain à balayage manuel
DE102008058457A1 (de) * 2008-11-21 2010-06-02 Hilti Aktiengesellschaft Verfahren und handgeführter Sensor mit adaptiver Detektionsschwelle zur Detektion von in Bauwerkuntergründen eingebetteten Fremdobjekten
US8387472B2 (en) 2008-11-21 2013-03-05 Hilti Aktiengesellschaft Method and hand-operated sensor with adaptive detection threshold for the detection of foreign objects embedded in building structure subgrades

Also Published As

Publication number Publication date
EP0360845A1 (fr) 1990-04-04
WO1989007775A1 (fr) 1989-08-24

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