DE19641196A1 - Detection method for metal object e.g. bomb in ground - Google Patents

Detection method for metal object e.g. bomb in ground

Info

Publication number
DE19641196A1
DE19641196A1 DE1996141196 DE19641196A DE19641196A1 DE 19641196 A1 DE19641196 A1 DE 19641196A1 DE 1996141196 DE1996141196 DE 1996141196 DE 19641196 A DE19641196 A DE 19641196A DE 19641196 A1 DE19641196 A1 DE 19641196A1
Authority
DE
Germany
Prior art keywords
probes
probe
characterized
sensors
measuring
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
DE1996141196
Other languages
German (de)
Other versions
DE19641196C2 (en
Inventor
Andreas Dr Fischer
Original Assignee
Andreas Dr Fischer
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 Andreas Dr Fischer filed Critical Andreas Dr Fischer
Priority to DE1996141196 priority Critical patent/DE19641196C2/en
Publication of DE19641196A1 publication Critical patent/DE19641196A1/en
Application granted granted Critical
Publication of DE19641196C2 publication Critical patent/DE19641196C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41HARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H11/00Defence installations; Defence devices
    • F41H11/12Means for clearing land minefields; Systems specially adapted for detection of landmines
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS
    • G01V3/00Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/15Electric 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
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS
    • G01V3/00Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/38Processing data, e.g. for analysis, for interpretation, for correction

Abstract

The method uses a measurement probe to search for any suspicious point (Pn) and then moving it along a measurement path. Location dependent measurement signals are then converted into a graph suitable for display on a monitor. The measurement line (C-C) is swept with one or more main (2) and-or auxiliary probes (4) linked to a movement sensor (3), repeated sweeps being carried out simultaneously about the suspicious point. The signals in the x-direction from the probes and from the movement sensor are combined and an information and image processor (6) provides separate and simultaneous displays in the form of graphs. The distance travelled and the time taken determined in step by the movement sensor provides coordination of the measurement signals from the probes with the measurement location on the measurement line

Description

The invention relates to a method for detection of objects in the ground, at the probes after searching a suspicion point (Pn) along at least one Measurement section moves and measurement signals are generated, the by means of an electronic data processing unit digitized saved, in displayable values reshaped and a display device directly at the measuring location are supplied, the location-dependent signals as Curves are shown or displayed.

The invention further relates to a portable device to carry out the procedure on the forearm of the Sondierers attachable support tube with a swiveling holder for measuring probes, with a electronic data and image processing unit and a power supply.  

DE 39 22 303 C2 describes a method for locating magnetic objects in the ground, especially bombs, using a Magnetometer known with a probe that runs along at least one measuring section is moved while doing so Measurement signals generated by an electronic Measuring device converted into displayable measured values and fed to a display device directly at the measuring location will. The probe is roughly the same along several spaced adjacent measuring sections moved and thereby generates location-dependent measurement signals whose associated measurement values are stored in a memory and directly in a coordinate system of the Display device in graphic form as Measured value curves are shown, the Measured value courses of adjacent measuring sections as adjacent measurement curves with uniform Scales are displayed in sections.

A method and an apparatus for Locating underground, ferromagnetic bodies, such as B. Slide caps, slide rods or marking rods (DE 32 21 301 A1), in which by means of a magnetometer the inhomogeneity of the natural geomagnetic field in close to the underground ferromagnetic body the surface of the earth is detected. The magnetometer points two highly sensitive magnetic field probes in two tubes that can be slid into each other and that are in one electrical bridge circuit so against each other are connected that an imbalance in the of the magnetic field probes induced voltages to a Output voltage in the bridge diagonal leads.  

Furthermore, DE 33 16 707 A1 describes a method and a device for immediate measurement geomagnetic field strength anomalies regardless of temporal field variations known, in which a Magnetometer is equipped with two measuring probes. Of the Measuring process is carried out in such a way that simultaneous measurement of two neighboring stations the device is moved by one measuring point. Each point is therefore measured twice. The Device shaft consists of two units, that of two People are carried and operated by one person. The left unit, in the direction of movement, exists from a sensor, which is attached to the back by means of a holding frame worn and connected by cable, and a proton magnetometer itself Straps worn over the chest, the Controls are on the top of the device. The Front device unit includes the second sensor and the battery box that carries the sensor and is strapped to the back by means of the straps. The Units are arranged in the direction of movement so that the person in front can make the bearing while the Hintermann triggered the measuring functions and the Measuring tape display monitored.

According to DE-OS 2 65 911 is a locator for Mineral resources such as water, oil, ore and Like. or for Energy densities such as radiation, magnetic or electric fields and Like known.  

This known locating device has a handle, whose axis is vertically stable and in one rotatable antenna in the form of an approximately vertical is arranged to the handle axis, the handle being electrically conductive with the antenna connected is. It is still a display device to determine the extent of the rotational movement of the Antenna provided, which consists of a dial and a pointer exists.

Furthermore, from DE 43 33 121 A1 Magnetometer tracking system known, during which a measurer along a line a measurement Magnetometer probe leads over a measuring section, the Measurement signals from an electronic measuring device taking into account the speed of the Measuring rod are held. There is one on a leash Large number of detectable distance sensors in defined distances. On the magnetometer probe a sensor of a detector is arranged, the each a route signal to the measuring device emits if his sensor detects a during the measurement Spacer sweeps. The measuring device calculated based on the impingement of the route signals the speed of the sensor.

The disadvantage of all these known solutions is common that only one scan in the direction of the measuring path of the soil is possible and the explorer only one Curve of the measurement signals can win if he moves in the direction of the measuring path. Once the explorer  stops in the inspection of the measuring section, only the Measured value and curve curve no longer available. A Scanning substantially perpendicular to the Direction of the measuring path does not take place.

Knowing this state of the art Invention based on the object, a method and a Device of the type mentioned are available make it possible, the measurement signals at least in two directions, i.e. H. in the direction of the measuring path and approximately perpendicular to it, during the measuring process to represent together as a curve.

This is done with the procedure of the type mentioned at the beginning solved according to the invention in that the measuring line with at least one and / or more, at least a main and / or motion sensor connected Additional probe (s) by swiveling several times around the respective suspect points are scanned at the same time, and that the measurement signals generated by the probes with the Signals of the motion sensor linked online in this way be, and that the measurement signals in the x-direction each as a curve with the data and Image processing unit for each of the probes separately and be displayed simultaneously, with the the motion sensor ascertained time and synchronously Time allocation of the measurement signals of the probes to Measurement location allowed on the measurement line.  

The measuring section divided into measuring points is from Probe from measurement point to measurement point with at least one main probe and a motion sensor sampled by moving them around each Measuring point around, a semicircular swivel movement executed. A large number comes to each measuring point more discrete, each generated by the individual probes Measurement signals too.

Will the main probe together with the motion sensor the measuring point is pivoted, so the motion sensor given a speed. Using the functional relationships of speed and Time on the one hand and path and time on the other the location coordinates of the generated Determine measurement signals so that the course of the Measuring signals not only in the direction of the measuring path, but also perpendicular to it in curve form.

Also the measurement signals generated by the additional probe can be in this way Waveform on the data and image processing unit map, so that the prober an exact display of the Measurement signals in the direction of measurement and in the lateral direction is available.

This leads to faster and more precise location of the search object.

The conversion of the generated measurement signals into displayable ones Values and their location-dependent storage are not required further explanation as this is in the prior art is sufficiently described.  

The interactive is particularly informative Merging the measurement signals on site into one simultaneous display of several curves different probes.

Gas sensors have been developed for use as main probes, Temperature sensors, magnetometers, ground radar probes, Eddy current probes or sonar probes as special proven suitable.

In addition to these main probes, gas sensors, Temperature sensors, magnetometers, ground radar probes, Eddy current probes or sonar probes as additional probes used.

It is also advantageous if as motion sensors Ultrasonic Doppler sensors, radar Doppler, optical or mechanical odometers can be used.

The task continues with a portable Device of the type mentioned above solved that at least one and / or more than at least a motion sensor coupled main and / or Additional probe (s) relative to each other on the support tube  are arranged adjustable, which together the separate portable data and image processing unit is assigned with which the measurement signals of the individual Probes are displayed separately as a curve, the motion sensor parallel to the plane of the Main probe close to its outer perimeter in flight the support tube axis and the additional probes in turn one end of the main probe Support tube pivotally and releasably attached and at the other end with a guide in the angular position Center axis of the main probe can be locked.

In a preferred embodiment of the device according to the invention are probes in different types and numbers can be coupled together.

The additional probe is on yours, the swiveling one Holder for the main probe facing end detachable in this is plugged in and is at the other end by one Angular guide held with which the angular position of the Additional probe relative to the main probe and Accelerometer is adjustable.

The motion sensor is on the periphery of the for example, plate-shaped main probe attached and selected in its dimensions so that it is largely acts punctiform.  

The laptop-like data and image processing unit is attached to the probe by belts attached to the side worn in front of the chest or belly, so that he the Display when pivoting the invention Keeps the device directly in his field of vision.

The data and image processing unit consists of Microcontrollers and digital signal processors. she has an LCD screen. The power supply is Expediently integrated into the unit and can for example, consist of a rechargeable battery.

For easy pivoting of the invention The support tube has a device on its main probe opposite end an angled Forearm grip with armrests. This enables a firm hold of the device on Forearm's forearm.

It goes without saying that the main probe and the Accelerometer and the additional probe with the Data and image processing unit electrically conductive are connected. Depending on the type of upcoming The additional probe can add or remove the probe task be switched off.

The prober has the advantage of being able to walk from measuring point to measuring point not only the measuring curve in  the direction of the measuring path, but also in the vertical direction Direction can be observed so that the location is made more precise and easier. Furthermore are no additional forces for carrying when probing the device needed. Auxiliary standards to determine the individual measuring points can be omitted.

The method according to the invention enables the explorer evaluate the measurement data on site, the location of the calculated object and on the LCD screen display.

This gives the advantage of high flexibility and variability of the method according to the invention and the device according to the invention when probing Detect objects in the floor. It just has to be the number of coupled sensors can be varied to an adaptation to the respective probing task to reach.

The device according to the invention can be Number of sensors in their weight accordingly dimension.

This leads to weight savings and an easy one and easier handling of the device on site.

Further advantages and details emerge from the following description of a preferred Embodiment with reference to the attached drawings.  

The individual shows:

Fig. 1 shows the Meßsignalverlauf a single probe for an in-ground object in the x-direction,

Fig. 2 shows the Meßsignalverlauf of several sensors,

Fig. 3 is a plan view of the device according to the invention and

Fig. 4 is a side view of the device according to the invention.

An object 1 located in the ground or soil, for example an ammunition body or another magnetic body, is to be detected using the method according to the invention. The Arreal to be probed is - as shown schematically in FIGS . 1 and 2 - divided into measuring sections AB, DE, etc., which the explorer steps within the measuring section at predetermined suspicion points P n with the device according to the invention.

The device according to the invention ( FIG. 3) essentially consists of a main probe 2 , a motion sensor 3 and an additional probe 4 , which are fastened to one another in a pivotable and adjustable manner on a support tube 5 . The probes 2 and 4 as well as the motion sensor 3 are connected to a data and image processing unit 6 which the prober carries on his chest by means of carrying straps 7 .

The main probe 3 - for example a fluxgate magnetometer - has a plate shape and has in its central axis AA a receptacle 8 which pivots on the support tube 5 ( FIG. 4).

The receptacle 8 also has a pivotable sleeve 9 in the central axis AA, into which the tubular additional probe 4 is detachably inserted with its end facing the main probe 2 . At the other end, the additional probe 4 is screwed to an angle guide 10 which is articulated on the support tube 5 . By loosening the screw connection 11 on the angle guide 10 , the additional probe 4 can be adjusted relative to the main probe 2 and the motion sensor 3 .

The swivel range α of the additional probe 4 is, for example, 150 °.

As an additional probe 4 is a FEREX Erdmagnetfeldsonde is in this example used (Fig. 4).

The motion sensor 3 lies on the outer edge of the plate-shaped main probe 2 approximately in the extended axis BB of the support tube 5 , so that the path covered by the motion sensor during pivoting is somewhat longer than the path of the main probe 2 and the additional probe 4 .

The support arm 5 is angled for a better grip on the forearm of the probe. This angled forearm grip handle 12 also has lateral arm supports 13 which enable a firm hold on the forearm of the probe and ensure easy handling on site.

When walking the measuring section AB, the probe pivots the support tube 5 with the probes and sensors arranged thereon about the respective measuring point P n .

With the pivoting, the motion sensor 3 experiences a speed v on its measuring line or its pivoting path CC from point P x1 to P x2 . Since the speed is a function s (t), the location coordinates of the generated measurement signals at points P x1 and P x2 can be exactly determined and assigned to each individual probe. The same relationships naturally also apply to acceleration as a function v (t).

This enables the location coordinates to be determined for each measurement signal generated by the probes with which the course of the curve of the generated measurement signals in the x direction is determinable.

The generated measurement signals and their location coordinates are supplied in an analog form to the data and image processing unit 6 , digitized and stored on the hard disk of the unit and processed.

The data and image processing unit 6 are supplied with power by means of an integrated rechargeable battery, not shown here.

The measurement signals are processed in such a way that the measurement signals of the main probe 2 and the additional probe 4 are shown on the LCD screen of the image processing unit 6 as a separate curve. At the same time, the position of the object located in the ground is calculated from the stored measurement data and displayed to the explorer.

Reference list

1 object
2 main probe
3 motion sensor
4 additional probe
5 support tube
6 data and image processing unit
7 risers
8 recording
9 sleeve
10 angle guide
11 screw connection
12 forearm grip
13 side armrests
P n suspicions
Location coordinates P x1 , P x2
AA center axis
BB extended axis of the support tube
CC measuring line or swivel path
Swivel angle

Claims (18)

1.Method for detecting objects in the ground, in which measuring probes are moved at least along a measuring path after finding a suspected point (P n ) and measuring signals are generated which are digitally stored by means of an electronic data processing unit, converted into displayable values and fed directly to a display device at the measuring location The location-dependent measurement signals are displayed as a curve, characterized in that the measurement line (CC) is connected to at least one and / or more main and / or additional probe (s) connected via at least one motion sensor ( 3 ) and not influencing one another. ( 2; 4 ) are simultaneously scanned by repeated pivoting around the respective suspected point (P n ), and that the measurement signals generated by the probes ( 2 ; 4 ) are linked online with the signals from the motion sensor ( 3 ) in such a way that the measurement signals in x -Direction as a curve with the data and image processing tion unit ( 6 ) for each of the probes are displayed separately and at the same time, the distance and time measured with the respective motion sensor ( 3 ) being synchronized with an assignment of the measurement signals of the probes ( 2 ; 4 ) allowed to the measuring location on the measuring line (CC).
2. The method according to claim 1, characterized in that the Interactive curves on site to create a sectional view be merged from the location, size and type of Object calculated and on the data and Image processing unit are displayed.
3. The method according to claim 1 and 2, characterized in that the probes ( 2 ; 3 ) and the movement sensors ( 3 ) are coupled together in different types and numbers.
4. The method according to claim 1 and 3, characterized in that gas sensors, temperature sensors, magnetometers, ground radar probes, eddy current probes or sonar probes are used as main probes ( 2 ).
5. The method according to claim 1 and 3, characterized in that gas sensors, temperature sensors, magnetometers, ground radar probes, eddy current probes or sonar probes are used as additional probes ( 4 ).
6. The method according to claim 1 and 3, characterized in that the movement of the main and additional probes ( 2 ; 4 ) with mechanical, capacitive, inductive, thermoelectric, piezoelectric, acoustic, optical, magnetic sensors, eddy current, resistance, strain gauges - and / or Hall effect sensors is measured.
7. The method according to claim 6, characterized in that as Acceleration sensors, ultrasonic Doppler sensors, radar Doppler, optical or mechanical odometers can be used.
8. Portable device for carrying out the method according to claim 1, with attachable to the forearm of the probe tube with a pivotable receptacle for measuring probes, with an electronic data and image processing unit and a power supply, characterized in that at least one and / or more than at least one Motion sensor ( 3 ) coupled main and / or additional probe (s) ( 2 ; 4 ) are arranged to be adjustable relative to each other on the support tube ( 5 ), to which the separately portable data and image processing unit ( 6 ) is assigned, with which the measurement signals of the individual probes ( 2 ; 4 ) are displayed separately as a curve, the motion sensor ( 3 ) being arranged parallel to the plane of the main probe ( 2 ) close to its outer circumference in alignment with the support tube axis (BB) and the additional probes ( 4 ) in turn in one the receptacle ( 8 ) of the main probe ( 2 ) to the support tube ( 5 ) pivotally and releasably attached and others ends can be locked with a guide ( 10 ) in the angular position to the central axis (AA) of the main probe.
9. The device according to claim 8, characterized in that the main probe ( 2 ) is a gas sensor, temperature sensor, magnetometer, a ground radar probe, eddy current probe or sonar probe.
10. The device according to claim 8, characterized in that the additional probe ( 4 ) is a gas sensor, temperature sensor, magnetometer, a ground radar probe, eddy current probe or sonar probe.
11. The device according to claim 8, characterized in that the motion sensor ( 3 ) is an acceleration sensor, ultrasonic Doppler sensor, radar Doppler, optical or mechanical travel meter.
12. The apparatus of claim 8 to 11, characterized in that the motion sensor ( 3 ) is designed like a mass point and is arranged on the main probe ( 2 ) in alignment with the support tube ( 5 ).
13. The apparatus of claim 8 to 12, characterized in that the probes ( 2 ; 4 ) and the motion sensors ( 3 ) are interconnected in different types and numbers.
14. The apparatus of claim 8 and 11, characterized in that the pivot angle (α) of the additional probe ( 4 ) with respect to the central axis (BB) is up to ± 180 °.
15. The apparatus according to claim 8 to 14, characterized in that the support tube ( 5 ) has an angled forearm handle ( 12 ) with armrests ( 13 ).
16. The apparatus according to claim 8 to 15, characterized in that on the data and image processing unit ( 6 ) carrying straps ( 7 ) are attached or the data and image processing unit ( 6 ) is arranged directly on the forearm carrying handle ( 12 ).
17. The apparatus according to claim 8 to 16, characterized in that the probes ( 2 ; 4 ) and the motion sensors ( 3 ) are coupled to the data and image processing unit ( 6 ).
18. The apparatus according to claim 8, characterized in that the image and data processing unit ( 6 ) consists of microcontrollers and / or digital signal processors.
DE1996141196 1996-09-24 1996-09-24 Method and device for detecting objects in the ground Expired - Fee Related DE19641196C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1996141196 DE19641196C2 (en) 1996-09-24 1996-09-24 Method and device for detecting objects in the ground

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996141196 DE19641196C2 (en) 1996-09-24 1996-09-24 Method and device for detecting objects in the ground
AT158997A AT405888B (en) 1996-09-24 1997-09-19 Method and device for detecting objects in the ground

Publications (2)

Publication Number Publication Date
DE19641196A1 true DE19641196A1 (en) 1998-04-02
DE19641196C2 DE19641196C2 (en) 1998-07-09

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Country Status (2)

Country Link
AT (1) AT405888B (en)
DE (1) DE19641196C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1972964A1 (en) * 2007-03-23 2008-09-24 TUBITAK-Turkiye Bilimsel ve Teknolojik ve Arastima Kurumu Portable mine detection system
WO2015193898A1 (en) * 2014-06-19 2015-12-23 Kaplan Haelion Erez A system for imaging covered objects

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10321969B4 (en) * 2003-05-15 2011-06-22 Siemens AG, 80333 Method and device for detecting a given substance in a container

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US4021725A (en) * 1976-03-05 1977-05-03 The United States Of America As Represented By The Secretary Of The Navy Mobile mine detection system having plural color display
DE2659111A1 (en) * 1976-12-28 1978-07-06 Hahn Geraetebau Gmbh Geological survey appts. for detecting water, oil or ore - has pivoting indicator in hand held device, with body of operator completing electric circuit
DE3316707A1 (en) * 1983-05-06 1983-11-10 Freisl Paul Peter Dipl Geol Method and device for directly measuring terrestrial magnetic field strength anomalies by means of a proton magnetometer independently of temporal field variations
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US5093622A (en) * 1989-03-17 1992-03-03 Minnesota Mining And Manufacturing Company Method and apparatus for determining direction to and position of an underground conductor
DE4036123A1 (en) * 1990-11-13 1992-05-14 Andreas Dipl Ing Roesch Concrete reinforcement structure measuring device - records signal from sensor detecting reinforcing iron as function of sensor movement across concrete surface
DE4222373A1 (en) * 1992-07-08 1994-01-13 Gerhard Ruppenthal Distance and speed meter for sportsmen - derives speed and distance by integration of measured acceleration using sensor without external source
DE4222422A1 (en) * 1992-07-08 1994-01-13 Siemens Ag Measurement value plotter for continuously recorded parameter - contains display, memory and selection arrangement for indicating parameter variations
DE4333121A1 (en) * 1992-10-21 1994-05-05 Vallon Gmbh Locating system with magnetometer for magnetic objects in ground - contains magnetic probe movable along a line, and corrects for speed variations
DE4242541A1 (en) * 1992-12-16 1994-06-30 Tzn Forschung & Entwicklung Device for locating ammunition located below the earth's surface
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WO1994024584A1 (en) * 1993-04-20 1994-10-27 Schonstedt Instrument Company Methods of detecting location of magnetically-marked elongated buried objects
DE4418059A1 (en) * 1993-05-25 1994-12-01 Weber Srl Conversion and measurement unit
DE4411244A1 (en) * 1994-03-31 1995-10-05 Psi Elektronik Service Christi Recording measurement data
DE4443856C1 (en) * 1994-12-09 1996-03-14 Vallon Gmbh Three-wheeled probe vehicle for metal detection
DE19517828A1 (en) * 1995-05-09 1996-11-14 Esem Gruenau Gmbh & Co Kg Deflection measuring device for divining rod

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Publication number Priority date Publication date Assignee Title
US4021725A (en) * 1976-03-05 1977-05-03 The United States Of America As Represented By The Secretary Of The Navy Mobile mine detection system having plural color display
DE2659111A1 (en) * 1976-12-28 1978-07-06 Hahn Geraetebau Gmbh Geological survey appts. for detecting water, oil or ore - has pivoting indicator in hand held device, with body of operator completing electric circuit
DE3221301A1 (en) * 1982-06-05 1983-12-08 Seba Mess Ortungstech A method of locating underground ferromagnetic body
DE3316707A1 (en) * 1983-05-06 1983-11-10 Freisl Paul Peter Dipl Geol Method and device for directly measuring terrestrial magnetic field strength anomalies by means of a proton magnetometer independently of temporal field variations
WO1986004672A1 (en) * 1985-01-30 1986-08-14 Tatabányai Szénbányák Method and device for controlling in situ movement processes in solid media
US5093622A (en) * 1989-03-17 1992-03-03 Minnesota Mining And Manufacturing Company Method and apparatus for determining direction to and position of an underground conductor
DE3922303A1 (en) * 1989-07-07 1991-01-10 Vallon Gmbh Magnetometer for locating magnetic objects in ground - has measurement value memory, display for valves of one or more measurement paths
DE4036123A1 (en) * 1990-11-13 1992-05-14 Andreas Dipl Ing Roesch Concrete reinforcement structure measuring device - records signal from sensor detecting reinforcing iron as function of sensor movement across concrete surface
DE4222373A1 (en) * 1992-07-08 1994-01-13 Gerhard Ruppenthal Distance and speed meter for sportsmen - derives speed and distance by integration of measured acceleration using sensor without external source
DE4222422A1 (en) * 1992-07-08 1994-01-13 Siemens Ag Measurement value plotter for continuously recorded parameter - contains display, memory and selection arrangement for indicating parameter variations
DE4333121A1 (en) * 1992-10-21 1994-05-05 Vallon Gmbh Locating system with magnetometer for magnetic objects in ground - contains magnetic probe movable along a line, and corrects for speed variations
DE4242541A1 (en) * 1992-12-16 1994-06-30 Tzn Forschung & Entwicklung Device for locating ammunition located below the earth's surface
DE4307367A1 (en) * 1993-03-09 1994-09-15 Bosch Gmbh Robert Display and control device, in particular for motor vehicles
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DE4418059A1 (en) * 1993-05-25 1994-12-01 Weber Srl Conversion and measurement unit
DE4411244A1 (en) * 1994-03-31 1995-10-05 Psi Elektronik Service Christi Recording measurement data
DE4443856C1 (en) * 1994-12-09 1996-03-14 Vallon Gmbh Three-wheeled probe vehicle for metal detection
DE19517828A1 (en) * 1995-05-09 1996-11-14 Esem Gruenau Gmbh & Co Kg Deflection measuring device for divining rod

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1972964A1 (en) * 2007-03-23 2008-09-24 TUBITAK-Turkiye Bilimsel ve Teknolojik ve Arastima Kurumu Portable mine detection system
WO2015193898A1 (en) * 2014-06-19 2015-12-23 Kaplan Haelion Erez A system for imaging covered objects

Also Published As

Publication number Publication date
ATA158997A (en) 1999-04-15
DE19641196C2 (en) 1998-07-09
AT405888B (en) 1999-12-27

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