DE1105514B - Arrangement for measuring weak currents - Google Patents

Arrangement for measuring weak currents

Info

Publication number
DE1105514B
DE1105514B DES58366A DES0058366A DE1105514B DE 1105514 B DE1105514 B DE 1105514B DE S58366 A DES58366 A DE S58366A DE S0058366 A DES0058366 A DE S0058366A DE 1105514 B DE1105514 B DE 1105514B
Authority
DE
Germany
Prior art keywords
arrangement according
hall voltage
magnetic circuit
arrangement
voltage generator
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.)
Pending
Application number
DES58366A
Other languages
German (de)
Inventor
Dr Rer Nat Friedrich Dipl-Phys
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to DES58366A priority Critical patent/DE1105514B/en
Publication of DE1105514B publication Critical patent/DE1105514B/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
    • G01R15/202—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices using Hall-effect devices

Description

Anordnung zur Messung schwacher Ströme Die Erfindung bezieht sich auf eine Meßeinrichtung, mit welcher kleine Ströme, insbesondere schwache Gleichströme,gemessen werden können. Der Erfindung liegt die Aufgabe zugrunde, nicht nur Ströme zu messen, welche an eine feste Leiterbahn gebunden sind, sondern auch Konvektionsströme zu erfassen, wie dies z. B. der Fall ist, wenn aus einem Teilchenbeschleuniger Korpuskularstrahlen austreten. Dementsprechend bezieht sich die Erfindung auoh auf die Messung von Strömen von Protonen, Elektronen oder auch geladenen Mesonen.Arrangement for measuring weak currents The invention relates to to a measuring device with which small currents, especially weak direct currents, are measured can be. The invention is based on the object of not only measuring currents, which are tied to a solid conductor track, but also convection currents grasp how this z. B. is the case when corpuscular beams from a particle accelerator step out. Accordingly, the invention also relates to the measurement of currents of protons, electrons or charged mesons.

Bei der Anordnung nach der Erfindung wird von einer an sich bekannten indirekten Erfassung des Stromwertes durch Messung eines von ihm verursachten magnetischen Feldes Gebrauch gemacht. Es ist auch bereits bekannt, Gleichströme hohen Stromwertes auf diese Weise zu erfassen, wobei das magnetische Feld mit Hilfe einer Hallspannungserzeugungseinrichtung gemessen wird. In the arrangement according to the invention is of a known per se indirect detection of the current value by measuring a magnetic caused by it Made use of the field. It is also already known, direct currents of high current value to detect in this way, the magnetic field with the help of a Hall voltage generating device is measured.

Die Erfindung besteht darin, daß - unter an sich bekannter indirekter Erfassung des Stromwertes durch Messung des von ihm verursachten magnetischen Feldes mit Hilfe einer Hallspannungserzeugungseinrichtung in einem magnetischen Kreis aus hochpermeablem Material - der magnetische Kreis den zu untersuchenden Strompfad mehrfach, insbesondere vielfach umschlingend, ausgebildet ist. Der magnetische Kreis kann durch ein Band oder durch einen Draht aus hochpermeablem Eisen oder einem anderen günstigen magnetisierbaren Werkstoff gebildet sein. The invention consists in that - among known indirect Acquisition of the current value by measuring the magnetic field caused by it with the help of a Hall voltage generating device in a magnetic circuit highly permeable material - the magnetic circuit is the current path to be examined multiple, in particular multiple wrapped around, is formed. The magnetic circuit can by a tape or a wire made of highly permeable iron or another cheap magnetizable material be formed.

Durch mehrfache, insbesondere vielfache Umschlingung des Strompfades gelingt es, die Luftspaltinduktion wesentlich zu verstärken. Um eine möglichst hohe Signalspannung zu erhalten, ist es weiterhin zweckmäßig, den Hallspannungserzeuger in Form eines Hallplättchens zwischen Ferritscheiben einzubetten, so daß man Luftspaltbreiten außerordentlich geringer Höhe erreichen kann. Auf diese Weise können effektive Luftspalte unter 5 pl, insbesondere von etwa 1 > erreicht werden, vor allem dann, wenn man dazu übergeht, aufgedampfte Halbleiterschichten zu verwenden.Through multiple, in particular multiple, looping of the current path succeeds in significantly increasing the air gap induction. To get as high as possible To obtain signal voltage, it is also useful to use the Hall voltage generator embedded in the form of a Hall plate between ferrite disks, so that one air gap widths can reach extremely low height. This way you can create effective air gaps below 5 pl, in particular from about 1>, especially if one goes over to the use of vapor-deposited semiconductor layers.

Enge Luftspalte können auch durch Vorschliff einer halbleitenden Kristall schicht mit nachfolgender elektrolytischer Abtragung gebildet werden.Narrow air gaps can also be created by pre-grinding a semiconducting crystal layer can be formed with subsequent electrolytic removal.

An Hand der Zeichnung soll die Erfindung näher erläutert werden. Die Figur zeigt ein Ausführungsbeispiel in seinen für die Erfindung wesentlichen Teilen in stark vereinfachter, zum Teil schematischer Darstellung. The invention is to be explained in more detail with reference to the drawing. The figure shows an embodiment in its essential for the invention Parts in a greatly simplified, partly schematic representation.

Der zu untersuchende Strompfad ist in der Darstellung durch die mit Pfeilen versehene Linie 1 versinnbildlicht, wobei es sich um einen Protonenstrahl handeln kann. Diesen Strompfad umschlingend, ist ein magnetischer Kreis 2 vorgesehen, der durch eine Wicklung aus hochpermeablem Eisen 3 gebildet ist. The current path to be examined is represented by the Line 1 marked with arrows symbolizes, which is a proton beam can act. Wrapping around this current path, a magnetic circuit 2 is provided, who through a Winding is formed from highly permeable iron 3.

Der Eisenkern kann band- oder drahtförmig gestaltet sein. Im Luftspalt 4 befindet sich zweckmäßig, zwischen Ferritplatten eingebettet, ein Hallplättchen 5 zur Erzeugung der Hall spannung.The iron core can be designed in the form of a strip or wire. In the air gap 4 is conveniently embedded between ferrite plates, a Hall plate 5 to generate the Hall voltage.

Zur Löschung der Remanenz besitzt die Einrichtung noch eine aus Kupferdraht bestehende Wicklung 6, die bei dem dargestellten Ausführungsbeispiel nur symbolisch angedeutet ist. Die Remanenzlöschung kann intermittierend oder kontinuierlich erfolgen. Dabei können Frequenzen von beispielsweise 50 kHz angewendet werden. To delete the remanence, the device has another one made of copper wire existing winding 6, which in the illustrated embodiment is only symbolic is indicated. The remanence deletion can take place intermittently or continuously. Frequencies of, for example, 50 kHz can be used.

Claims (8)

PATENTANSPRUCHE: 1. Anordnung zur Messung schwacher Ströme, insbesondere der Stromstärke von Elektronen-, Protronen oder Mesonenströmungen, dadurch gekennzeichnet, daß - unter an sich bekannter indirekter Erfassung des Stromwertes durch Messung eines von ihm verursachten magnetischen Feldes mit Hilfe einer Hallspannungserzeugungseinrichtung in einem magnetischen Kreis aus hochpermeablem Material - der magnetische Kreis den zu untersuchenden Strompfad mehrfach, insbesondere vielfach umschlingend, ausgebildet ist. PATENT CLAIMS: 1. Arrangement for measuring weak currents, in particular the current strength of electron, protron or meson currents, characterized by that - with known indirect detection of the current value by measurement a magnetic field caused by it with the help of a Hall voltage generating device in a magnetic circuit made of highly permeable material - the magnetic circuit the current path to be examined is formed multiple times, in particular wrapped around it multiple times is. 2. Anordnung nach Anspruch 1, gekennzeichnet durch einen band- oder drahtförmig ausgebildeten Eisenkreis. 2. Arrangement according to claim 1, characterized by a band or wire-shaped iron circle. 3. Anordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Hallspannungserzeuger zwischen Ferritplatten eingebettet ist. 3. Arrangement according to claim 1 or 2, characterized in that the Hall voltage generator is embedded between ferrite plates. 4. Anordnung nach Anspruch 3, dadurch gekennzeichnet, daß effektive Luftspaltbreiten von weniger als 5 y, insbesondere etwa 1 F, vorgesehen sind. 4. Arrangement according to claim 3, characterized in that effective Air gap widths of less than 5 y, in particular about 1 F, are provided. 5. Anordnung nach Anspruch 4, dadurch gekennzeichnet, daß der Hallspannungserzeuger durch eine aufgedampfte Halbleiterschicht gebildet ist. 5. Arrangement according to claim 4, characterized in that the Hall voltage generator is formed by a vapor-deposited semiconductor layer. 6. Anordnung nach Anspruch 4, dadurch gekennzeichnet, daß der Hallspannungserzeuger durch Vorschliff einer halbleitenden Kristallschicht und nachfolgender elektrolytischer Abtragung gebildet ist. 6. Arrangement according to claim 4, characterized in that the Hall voltage generator by pre-grinding a semiconducting crystal layer and subsequent electrolytic Ablation is formed. 7. Anordnung nach Anspruch 1 bis 6 dadurch gekennzeichnet, daß der magnetische Kreis mit einer Wicklung zur Löschung der Remanenz versehen ist. 7. Arrangement according to claim 1 to 6, characterized in that the magnetic circuit is provided with a winding to erase the remanence. 8. Anordnung nach Anspruch 7, gekennzeichnet durch eine intermittierend oder kontinuierlich wirksame Remanenzlöschung vorzugsweise mit einer Frequenz von etwa 50 kHz. 8. Arrangement according to claim 7, characterized by an intermittent or continuously effective remanence erasure, preferably with a frequency of about 50 kHz. In Betracht gezogene Druckschriften: Britische Patentschrift Nr. 744919. Documents considered: British Patent No. 744919.
DES58366A 1958-05-24 1958-05-24 Arrangement for measuring weak currents Pending DE1105514B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES58366A DE1105514B (en) 1958-05-24 1958-05-24 Arrangement for measuring weak currents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES58366A DE1105514B (en) 1958-05-24 1958-05-24 Arrangement for measuring weak currents

Publications (1)

Publication Number Publication Date
DE1105514B true DE1105514B (en) 1961-04-27

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Family Applications (1)

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DES58366A Pending DE1105514B (en) 1958-05-24 1958-05-24 Arrangement for measuring weak currents

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DE (1) DE1105514B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3130277A1 (en) * 1981-07-31 1983-02-17 Vacuumschmelze Gmbh, 6450 Hanau MAGNETIC CORE MADE OF SOFT MAGNETIC MATERIAL FOR A CURRENT SENSOR WITH A MAGNETIC-DEPENDENT SEMICONDUCTOR ELEMENT FOR DETECTING DC AND AC CURRENTS
US4558276A (en) * 1983-05-13 1985-12-10 Leon J. Comeau Device and method for sensing electric current in a conductor
EP0242560A1 (en) * 1986-04-25 1987-10-28 VDO Adolf Schindling AG Arrangement for the contactless measuring of an electric current in a conductor
US4963827A (en) * 1988-09-13 1990-10-16 Lgz Landis & Gyr Zug Ag Intermittently activated magnetic shield arrangement for reducing noise and offsets in solid state magnetic field sensors
DE9104500U1 (en) * 1991-04-12 1992-08-13 Werkstatt Fuer Behinderte Lippstadt Gem. Gmbh, 4780 Lippstadt, De
EP0521250A2 (en) * 1991-07-03 1993-01-07 Landis & Gyr Business Support AG Current measuring transducer using a magnetic field sensor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB744919A (en) * 1900-01-01

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB744919A (en) * 1900-01-01

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3130277A1 (en) * 1981-07-31 1983-02-17 Vacuumschmelze Gmbh, 6450 Hanau MAGNETIC CORE MADE OF SOFT MAGNETIC MATERIAL FOR A CURRENT SENSOR WITH A MAGNETIC-DEPENDENT SEMICONDUCTOR ELEMENT FOR DETECTING DC AND AC CURRENTS
US4558276A (en) * 1983-05-13 1985-12-10 Leon J. Comeau Device and method for sensing electric current in a conductor
EP0242560A1 (en) * 1986-04-25 1987-10-28 VDO Adolf Schindling AG Arrangement for the contactless measuring of an electric current in a conductor
US4963827A (en) * 1988-09-13 1990-10-16 Lgz Landis & Gyr Zug Ag Intermittently activated magnetic shield arrangement for reducing noise and offsets in solid state magnetic field sensors
DE9104500U1 (en) * 1991-04-12 1992-08-13 Werkstatt Fuer Behinderte Lippstadt Gem. Gmbh, 4780 Lippstadt, De
EP0521250A2 (en) * 1991-07-03 1993-01-07 Landis & Gyr Business Support AG Current measuring transducer using a magnetic field sensor
EP0521250A3 (en) * 1991-07-03 1993-01-13 Landis & Gyr Betriebs Ag Current measuring transducer using a magnetic field sensor

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