DE443164C - Device for the simultaneous relative measurement of geomagnetic elements at two spatially separated field points - Google Patents

Device for the simultaneous relative measurement of geomagnetic elements at two spatially separated field points

Info

Publication number
DE443164C
DE443164C DESCH63891D DESC063891D DE443164C DE 443164 C DE443164 C DE 443164C DE SCH63891 D DESCH63891 D DE SCH63891D DE SC063891 D DESC063891 D DE SC063891D DE 443164 C DE443164 C DE 443164C
Authority
DE
Germany
Prior art keywords
spatially separated
relative measurement
field points
geomagnetic
separated field
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.)
Expired
Application number
DESCH63891D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PRAKTISCHE GEOPHYSIK M B H GES
Original Assignee
PRAKTISCHE GEOPHYSIK M B H GES
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 PRAKTISCHE GEOPHYSIK M B H GES filed Critical PRAKTISCHE GEOPHYSIK M B H GES
Priority to DESCH63891D priority Critical patent/DE443164C/en
Application granted granted Critical
Publication of DE443164C publication Critical patent/DE443164C/en
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/38—Testing, calibrating, or compensating of compasses

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)

Description

Einrichtung zur gleichzeitigen relativen Messung erdmagnetischer Elemente . an zwei räumlich getrennten Feldpunkten. Die Erfindung bezweckt, die Feststellung von magnetisch wirksamen Einlagerungen in der Erde, z. B. von Eisenerzen, Salzstöcken, zu verbessern durch eine Anordnung, die es ermöglicht, enger begrenzte örtliche Anomalien des Erdmagnetismus wahrzunehmen, ohne daß man dabei durch die zeitlichen Schwankungen des erdmagnetischen Feldes gestört wird.Device for simultaneous relative measurement of geomagnetic elements . at two spatially separated field points. The aim of the invention is the determination of magnetically effective deposits in the earth, e.g. B. of iron ores, salt domes, to be improved by an arrangement that makes it possible to localize more narrowly Perceiving anomalies of the earth's magnetism without going through the temporal Fluctuations in the earth's magnetic field is disturbed.

Es ist ein bekanntes Verfahren für wissenschaftliche Zwecke, die örtlichen Unterschiede der erdmagnetischen Kraft oder ihrer Komponenten an verschiedenen Stellen absolut odervergleichend zu messen. Man hat dabei die zeitlichen Schwankungen des Erdfeldes dadurch berücksichtigt, daß man gleichzeitig Registrierinstrumente in der betreffenden Gegend aufstellte oder sich von Observatorien die Registrierungen geben ließ und daraus die zeitlichen Variationen entnahm.It is a well known process for scientific purposes, local Differences in the earth's magnetic force or its components in different places to be measured absolutely or comparatively. You have the time fluctuations of the Earth field is taken into account by simultaneously using recording instruments in of the area concerned or obtained the registrations from observatories and took the temporal variations from it.

Gemäß der Erfindung kompensiert man das Magnetfeld der Erde oder seine Komponenten in zwei nahezu gleichartigen Apparaten an den zwei Messungsorten durch das Feld von Spulen, und zwar durch denselben Strom, an dem einen Ort möglichst vollständig ab und stellt gleichzeitig fest, ob für den andern Ort die Kompensation erreicht ist oder wieviel dazu fehlt. Dies gibt dann ein Maß für den relativen Unterschied des Magnetfeldes an beiden Orten. Das Eintreten cler völligen oder nahezu völligen Kompensation läßt sich leicht an einer Magnetnadel erkennen, die an einem Faden von schwacher Torsionskraft, der um i8o° tordiert ist, aufgehängt wird. Beträgt dann der Unterschied am Punkt i bei nahezu völliger Kompensation etwa 3° oder 3o Skalenteile, am Punkt 2 dagegen 5° oder 5o Skalenteile, so kann man, wenn der Apparat einmal geeicht worden ist, ohne weiteres in absoluten Einheiten den relativen Unterschied des Erdfeldes an beiden Orten angeben. Der Fortschritt bei diesen Verfahren gegenüber bisher bekannten beruht darauf, daß man denselben Strom durch zwei Apparate schickt, wobei Fehler durch Temperaturunterschiede völlig herausfallen. Beide Apparate müssen solid konstruiert sein, damit sich die Lage der Kompensationsspule gegen die Magnetnadel nicht verändert. Ob man von den kleinen bei der Kompensation übrigbleibenden Restfeldern eines völlig abkompensiert oder etwa in der oben beschriebenen Weise angenähert mißt, statt völlig abzukompensieren, ist hierbei gleichgültig.According to the invention, one compensates for the earth's magnetic field or his Components in two almost identical devices at the two measurement locations the field of coils, through the same current, in one place as possible completely and at the same time determines whether the compensation is for the other place has been achieved or how much is missing. This then gives a measure of the relative difference of the magnetic field in both places. The occurrence of the complete or nearly complete Compensation can easily be recognized by a magnetic needle attached to a thread is suspended by a weak torsional force that is twisted by 180 °. Amounts to then the difference at point i with almost complete compensation about 3 ° or 3o Scale divisions, at point 2 on the other hand 5 ° or 5o scale divisions, so one can, if the apparatus once it has been calibrated, the relative difference in absolute units is readily apparent of the earth's field at both locations. The progress compared with these procedures previously known is based on sending the same current through two apparatuses, errors due to temperature differences are completely eliminated. Both devices must Be solidly constructed so that the position of the compensation coil against the magnetic needle not changed. Whether one of the small remaining fields after the compensation one fully compensated or approximated in the manner described above measures, instead of completely compensating, is irrelevant here.

Bestimmt man ein kleines Restfeld, das vielleich i Prozent des ganzen Feldes ausmacht, auch wieder angenähert auf i Prozent, so bedeutet dies, daß man das ganze Feld durch Kompensation auf o,oooi seines Wertes genau feststellen kann. Die bisherigen Verfahren für absolute oder relative Messungen sind kaum einer solchen Genauigkeit fähig. Die zeitlichen Schwankungen sind auch hier wieder durch die gleichzeitigen Messungen an beiden Orten eliminiert.If one determines a small remaining field, which is perhaps 1 percent of the whole Field, again approximated to i percent, this means that one can determine the whole field by compensation to the nearest o, oooi of its value. The previous methods for absolute or relative measurements are hardly of such a kind accuracy able to. The time fluctuations are also here again eliminated by taking measurements at both locations at the same time.

Claims (1)

PATENTANSPRUCH: Einrichtung zur gleichzeitigen relativen Messung erdmagnetischer Elemente an zwei räumlich getrennten Feldpunkten, gekennzeichnet durch die gleichzeitige Zuführung eines und desselben, die zu messende Komponente des Erdmagnetismus an dem einen der 'beiden .Beobachtungspunkte ganz oder nahezu ganz kompensierenden elektrischen Stromes zu den beiden einander gleichen oder ähnlichen erdmagnetischen Meßapparaten, wodurch die alleinige Messung des etwa verbleibenden Restanteils der zu bestimmenden Komponente ermöglicht wird.PATENT CLAIM: Device for simultaneous relative measurement of geomagnetic Elements at two spatially separated field points, characterized by the simultaneous Feeding one and the same, the component of the earth's magnetism to be measured one of the two observation points which completely or almost completely compensates electric current to the two equal or similar geomagnetic Measuring apparatus, whereby the sole measurement of the remaining portion of the component to be determined is enabled.
DESCH63891D 1922-01-15 1922-01-15 Device for the simultaneous relative measurement of geomagnetic elements at two spatially separated field points Expired DE443164C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH63891D DE443164C (en) 1922-01-15 1922-01-15 Device for the simultaneous relative measurement of geomagnetic elements at two spatially separated field points

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH63891D DE443164C (en) 1922-01-15 1922-01-15 Device for the simultaneous relative measurement of geomagnetic elements at two spatially separated field points

Publications (1)

Publication Number Publication Date
DE443164C true DE443164C (en) 1927-04-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH63891D Expired DE443164C (en) 1922-01-15 1922-01-15 Device for the simultaneous relative measurement of geomagnetic elements at two spatially separated field points

Country Status (1)

Country Link
DE (1) DE443164C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1623382B1 (en) * 1966-02-04 1971-12-23 Commissariat Energie Atomique DEVICE AND ARRANGEMENT FOR COMPENSATION OF OWN MAGNETIC INTERFERENCE FIELDS FOR A MAGNETOMETER CARRIED BY A VEHICLE
DE102013003190A1 (en) * 2013-02-26 2014-08-28 Hengstler Gmbh Battery-free signal transmitter with Wiegand sensor for gas or water meter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1623382B1 (en) * 1966-02-04 1971-12-23 Commissariat Energie Atomique DEVICE AND ARRANGEMENT FOR COMPENSATION OF OWN MAGNETIC INTERFERENCE FIELDS FOR A MAGNETOMETER CARRIED BY A VEHICLE
DE102013003190A1 (en) * 2013-02-26 2014-08-28 Hengstler Gmbh Battery-free signal transmitter with Wiegand sensor for gas or water meter
US9689723B2 (en) 2013-02-26 2017-06-27 Hengstler Gmbh Batteryless signal transmitter having a wiegand sensor for gas or water meters

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