DE3626328A1 - Device for the potential-isolated measurement value detection of alternating currents - Google Patents
Device for the potential-isolated measurement value detection of alternating currentsInfo
- Publication number
- DE3626328A1 DE3626328A1 DE19863626328 DE3626328A DE3626328A1 DE 3626328 A1 DE3626328 A1 DE 3626328A1 DE 19863626328 DE19863626328 DE 19863626328 DE 3626328 A DE3626328 A DE 3626328A DE 3626328 A1 DE3626328 A1 DE 3626328A1
- Authority
- DE
- Germany
- Prior art keywords
- circuit arrangement
- alternating currents
- electrically isolated
- conductor
- currents according
- 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.)
- Ceased
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
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur potential getrennten Meßwerterfassung von Wechselströmen, ins besondere für Stromschienensysteme und Leistungs schalter, bestehend aus einer auf einem isolierenden Substrat aufgebrachte Schaltungsanordnung, die vorzugs weise mit Operationsverstärkern aufgebaut ist.The invention relates to a device for potential separate measurement of AC currents, ins especially for track systems and performance switch consisting of one on an insulating Substrate applied circuit arrangement, the preferential is constructed with operational amplifiers.
Meßwerterfassungen von Wechselströmen werden nach dem Stand der Technik mit Stromwandler, Hall-Generato ren oder Hall-Widerstände realisiert. Stromwandler sind bei hochohmigen Abschluß, z.B: durch eine elek tronische Auswerteschaltung, -Wandler und sind durch Überbewertung der Oberwellenanteile frequenz abhängig.Measured value acquisitions of alternating currents are implemented according to the prior art with current transformers, Hall generators or Hall resistors. Current transformers are at high-impedance termination, for example : by an electronic evaluation circuit, converter and are frequency dependent due to overvaluation of the harmonic components.
Hall-Generatoren und Hall-Widerstände sind nicht lineare und temperaturabhängige Bauelemente. Diese Eigenschaften führen zu Meßwertverfälschungen. Alle drei vorgenannten Lösungen sind aufwendig und teuer.Hall generators and Hall resistors are not linear and temperature-dependent components. These properties lead to falsified measurements. All three of the above solutions are complex and expensive.
Der Erfindung liegt die Aufgabe zugrunde, eine prä zise, d.h. temperatur- und frequenzunabhängige Meß werterfassung von Wechselströmen zu schaffen, die durch Aufbau mit einfachen Mitteln eine wirtschaft liche Lösung darstellt.The invention has for its object a pre zise, i.e. temperature and frequency independent measurement value acquisition of alternating currents to create the an economy by building up with simple means represents solution.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß in dem elektromagnetischen Kraftfeldbereich des stromdurchflossenen Leiters, auf einer isolierenden Substratfläche, eine Leiterbahnschleife angeordnet ist, welcher bei Durchflutung der Kraftlinien ein induzierter Strom eingeprägt wird, der direkt auf die Schaltungsanordnung einwirkt, und daß die Schal tungsanordnung an ihrem Ausgang eine, dem eingeprägten Strom der Leiterbahnschleife, proportionale Spannung erzeugt.According to the invention, this object is achieved by that in the electromagnetic force field range of current-carrying conductor, on an insulating Substrate area, a conductor track loop arranged which is when the lines of force are flooded induced current is impressed directly on the circuit arrangement acts, and that the scarf at their exit one, the embossed Conductor loop current, proportional voltage generated.
In den Ansprüchen 2 bis 7 sind vorteilhafte Weiterbil dungen der erfindungsgemäßen Vorrichtung zur poten tialgetrennten Meßwerterfassung von Wechselströmen gekennzeichnet.In the claims 2 to 7 are advantageous further training poten of the device according to the invention tially separated measurement value acquisition of alternating currents featured.
Dabei ist nach Anspruch 2 von besonderem Vorteil, daß die Leiterbahnschleife aus mehreren Windungen bestehen kann und nach Anspruch 3, daß die Schaltungs anordnung mit Differenzverstärker ausgeführt ist.It is of particular advantage according to claim 2 that the conductor loop consists of several turns can exist and according to claim 3 that the circuit arrangement with differential amplifier is executed.
Weiterhin ist es bei der erfindungsgemäßen Vorrichtung von Vorteil, gemäß Anspruch 4 bis 6, daß die isolie rende Substratfläche aus Keramik oder Leiterplatten material (PCB) besteht, und daß die Schaltungsanordnung auf der isolierenden Substratfläche in Back-Plane- Technik ausgeführt ist.Furthermore, it is in the device according to the invention of advantage, according to claims 4 to 6, that the isolie Ceramic or printed circuit substrate surface material (PCB), and that the circuitry on the insulating substrate surface in back-plane Technology is executed.
Bei der erfindungsgemäßen Lösung ist es auch vorteil haft, daß, wie in Anspruch 7 gekennzeichnet, die Schaltungsanordnung für mehrere verschiedene Phasen ausgelegt werden kann.It is also advantageous in the solution according to the invention liable that, as characterized in claim 7, the Circuit arrangement for several different phases can be interpreted.
In der Zeichnung sind beispielhafte Ausführungsformen der erfindungsgemäßen Vorrichtung zur potentialge trennten Meßwerterfassung von Wechselströmen darge stellt. Exemplary embodiments are shown in the drawing the device according to the invention for potential separated measured value acquisition from alternating currents Darge poses.
Im einzelnen zeigen:In detail show:
Fig. 1 eine prinzipielle Anordnung der erfindungs gemäßen Vorrichtung zum stromdurchflossenen Leiter. Fig. 1 shows a basic arrangement of the device according to the Invention for the current-carrying conductor.
Fig. 2 eine Leiterbahnschleife nach der Erfindung mit mehreren Windungen. Fig. 2 is a conductor track loop according to the invention with several turns.
Fig. 3 ein Prinzipschaltbild der erfindungsgemäßen Vorrichtung. Fig. 3 is a schematic diagram of the device according to the invention.
Fig. 4 die isolierende Substratfläche mit der Leiter bahnschleife und der Schaltungsanordnung. Fig. 4 shows the insulating substrate surface with the conductor loop and the circuit arrangement.
Fig. 5 die Rückseite der isolierenden Substratfläche. Fig. 5 shows the back of the insulating substrate surface.
Fig. 1 stellt eine prinzipielle Anordnung der er findungsgemäßen Vorrichtung zum stromdurchflossenen Leiter 1 dar. Fig. 1 shows a basic arrangement of the inventive device for the current-carrying conductor 1 .
Auf der isolierenden Substratfläche 2 ist eine Leiter bahnschleife 3 und eine Schaltungsanordnung 5 ange ordnet. Die isolierende Substratfläche 2 ist zweck mäßigerweise in vertikaler Richtung zum stromdurch flossenen Leiter 1 räumlich so plaziert, daß die im Kraftfeld A auftretenden elektromagnetischen Kraft linien 4 die Leiterbahnschleife 3 durchfluten. Hier durch wird der Leiterbahnschleife 3 ein induzierter Strom I L eingeprägt, der direkt auf die Schaltungs anordnung 5 mit einem Eingangswiderstand von Ri ≠ 0 einwirkt. Die Schaltungsanordnung 5 ist wie aus Fig. 3 ersichtlich vorzugsweise mit Differenzverstärkern D nach bekannten Schaltungsprinzipien aufgebaut. Die Schaltungsanordnung 5 ist so dimensioniert, daß der Ausgang 7 der Schaltungsanordnung 5 eine Spannung U L erzeugt die proportional dem, der Leiterbahnspule 3, eingeprägten Strom ist. On the insulating substrate surface 2 , a conductor path loop 3 and a circuit arrangement 5 is arranged. The insulating substrate surface 2 is expediently placed in the vertical direction to the conductor 1 through which current flows so that the electromagnetic force lines 4 occurring in the force field A flood the conductor loop 3 . Here through the conductor track loop 3, an induced current I L is impressed, which acts directly on the circuit arrangement 5 with an input resistance of Ri ≠ 0. As can be seen from FIG. 3, the circuit arrangement 5 is preferably constructed with differential amplifiers D according to known circuit principles. The circuit arrangement 5 is dimensioned such that the output 7 of the circuit arrangement 5 generates a voltage U L which is proportional to the current impressed on the conductor track coil 3 .
Der induziert eingeprägte Strom I L der Leiterbahn spule 3 ist von der Konzentration der ihr durchflu tenden elektromagnetischen Kraftlinien 4 und von der Dimension der Leiterbahnspule 3 abhängig. Die Konzentration der elektromagnetischen Kraftlinien 4 setzt sich aus den Komponenten der Stromstärke im stromdurchflossenen Leiter 1 und der räumlichen Di stanz 2 der Leiterbahnspule 3 zum stromdurchflossenen Leiter zusammen.The induced current I L of the conductor coil 3 is dependent on the concentration of the electromagnetic force lines 4 flowing through it and on the dimension of the conductor coil 3 . The concentration of the electromagnetic lines of force 4 is composed of the components of the current intensity in the current-carrying conductor 1 and the spatial distance 2 of the conductor coil 3 to the current-carrying conductor.
Wie in Fig. 2 ersichtlich, kann die Leiterbahnspule 3 auch mehrere Windungen n aufweisen. Hierdurch werden auch die Platzanforderunen der erfindungsgemäßen Vorrichtung wesentlich reduziert.As can be seen in FIG. 2, the conductor track coil 3 can also have a plurality of turns n . This also significantly reduces the space requirements of the device according to the invention.
Zur genauen Justierung des Verhältnisses eingeprägter Strom I L zur Ausgangsspannung U L befindet sich in der Schaltungsanordnung 5 ein Potentiometer R. Hiermit wird die Amplitude der Ausgangsspannung U L verändert. Beispielsweise könnte für eine Stromstärke von 1000 A im stromdurchflossenen Leiter 1 eine Ausgangsspan nung U L von 1 V eingestellt werden.A potentiometer R is located in circuit arrangement 5 for the exact adjustment of the ratio of impressed current I L to output voltage U L. This changes the amplitude of the output voltage U L. For example, an output voltage U L of 1 V could be set for a current of 1000 A in the current-carrying conductor 1 .
Zur Vermeidung vom Meßwert verfälschenden kapazitiven Einstreuungen wird die isolierende Substratfläche 2 mit der Leiterbahnspule 3 und der Schaltungsanordnung 5 (Fig. 4) zweckmäßigerweise, wie in Fig. 5 ersichtlich, in Back-Plane-Technik ausgeführt. In order to avoid capacitive interferences falsifying the measured value, the insulating substrate surface 2 with the conductor track coil 3 and the circuit arrangement 5 ( FIG. 4) is expediently carried out, as can be seen in FIG. 5, using back-plane technology.
Zur Sicherheit gegen kapazitive Störeinflüsse kann die erfindungsgemäße Vorrichtung mit einem nicht ferromagnetischen Schutzblech, z. B. Aluminiumblech, ummantelt werden.To protect against capacitive interference the device according to the invention with a ferromagnetic mudguard, e.g. B. aluminum sheet, to be encased.
Mit der Erfindung wurde die Möglichkeit geschaffen, bei geringem Bauteilebedarf und Materialaufwand eine hochpräzise Meßwerterfassung von Wechselströmen zu schaffen. Die kleine Bauweise erlaubt das gleichzei tige Erfassen von Wechselstromwerten, z. B. in einem Leistungsschalter oder in einem Stromschienensystem, an allen Phasen.With the invention, the possibility was created with low component requirements and material expenditure high-precision measurement of AC currents to accomplish. The small design allows this at the same time term acquisition of AC values, e.g. B. in one Circuit breaker or in a busbar system, at all phases.
Die erfindungsgemäße Vorrichtung ist frequenzunab hängig, störsicher und in weitem Bereich temperatur unabhängig.The device according to the invention is frequency-independent dependent, interference-free and temperature in a wide range independently.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE19863626328 DE3626328A1 (en) | 1986-08-02 | 1986-08-02 | Device for the potential-isolated measurement value detection of alternating currents |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19863626328 DE3626328A1 (en) | 1986-08-02 | 1986-08-02 | Device for the potential-isolated measurement value detection of alternating currents |
Publications (1)
Publication Number | Publication Date |
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DE3626328A1 true DE3626328A1 (en) | 1988-02-11 |
Family
ID=6306642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE19863626328 Ceased DE3626328A1 (en) | 1986-08-02 | 1986-08-02 | Device for the potential-isolated measurement value detection of alternating currents |
Country Status (1)
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DE (1) | DE3626328A1 (en) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4333225A1 (en) * | 1993-09-30 | 1995-04-06 | Daimler Benz Ag | Measuring arrangement for measurements on large-area magnetic bodies |
DE29715774U1 (en) * | 1997-09-03 | 1998-03-19 | Gen Elektronik Gmbh | Electronic device |
EP0893696A2 (en) * | 1997-07-24 | 1999-01-27 | Robert Bosch Gmbh | Arrangement for measuring an AC current |
DE19740428A1 (en) * | 1997-09-10 | 1999-03-18 | Siemens Ag | Current transformer toroidal coil with circular winding cross-section |
FR2772130A1 (en) * | 1997-12-08 | 1999-06-11 | Conception Realisation Dev Ele | Fault detector for overhead electrical-power distribution lines |
DE19755773A1 (en) * | 1997-12-16 | 1999-06-17 | Cit Alcatel | Measurement arrangement for time function of large electric current with short rise-time, especially for GTO thyristor |
DE19813890A1 (en) * | 1998-03-28 | 1999-09-30 | Abb Research Ltd | Current measurement method |
GB2353598A (en) * | 1999-08-24 | 2001-02-28 | Siemens Metering Ltd | Improvements in or relating to current measurement |
DE10013345A1 (en) * | 2000-03-17 | 2001-10-04 | Sauer Danfoss Nordborg As Nord | Device for measuring an electrical current flowing through a conductor track |
US6434138B2 (en) | 1996-05-08 | 2002-08-13 | Robert Bosch Gmbh | Process for transmitting messages by digital sound broadcasting and receiver for carrying out this process |
EP2178737A1 (en) * | 2007-07-10 | 2010-04-28 | Raytheon Sarcos, LLC | Serpentine robotic crawler having a continous track |
US8571711B2 (en) | 2007-07-10 | 2013-10-29 | Raytheon Company | Modular robotic crawler |
US8935014B2 (en) | 2009-06-11 | 2015-01-13 | Sarcos, Lc | Method and system for deploying a surveillance network |
US9031698B2 (en) | 2012-10-31 | 2015-05-12 | Sarcos Lc | Serpentine robotic crawler |
US9409292B2 (en) | 2013-09-13 | 2016-08-09 | Sarcos Lc | Serpentine robotic crawler for performing dexterous operations |
US9566711B2 (en) | 2014-03-04 | 2017-02-14 | Sarcos Lc | Coordinated robotic control |
US10071303B2 (en) | 2015-08-26 | 2018-09-11 | Malibu Innovations, LLC | Mobilized cooler device with fork hanger assembly |
US10807659B2 (en) | 2016-05-27 | 2020-10-20 | Joseph L. Pikulski | Motorized platforms |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3323905A1 (en) * | 1983-07-02 | 1985-01-10 | ANT Nachrichtentechnik GmbH, 7150 Backnang | CIRCUIT ARRANGEMENT FOR DETECTING A CURRENT IN POWER SUPPLY DEVICES |
DE3440986A1 (en) * | 1984-11-09 | 1986-05-15 | ANT Nachrichtentechnik GmbH, 7150 Backnang | ARRANGEMENT FOR DETECTING A CURRENT BY A RESISTANCE AND APPLICATION |
-
1986
- 1986-08-02 DE DE19863626328 patent/DE3626328A1/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3323905A1 (en) * | 1983-07-02 | 1985-01-10 | ANT Nachrichtentechnik GmbH, 7150 Backnang | CIRCUIT ARRANGEMENT FOR DETECTING A CURRENT IN POWER SUPPLY DEVICES |
DE3440986A1 (en) * | 1984-11-09 | 1986-05-15 | ANT Nachrichtentechnik GmbH, 7150 Backnang | ARRANGEMENT FOR DETECTING A CURRENT BY A RESISTANCE AND APPLICATION |
Non-Patent Citations (1)
Title |
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DE-Z: Grundig Techn. Informationen, August 1964, S.782 * |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4333225A1 (en) * | 1993-09-30 | 1995-04-06 | Daimler Benz Ag | Measuring arrangement for measurements on large-area magnetic bodies |
DE4333225C2 (en) * | 1993-09-30 | 1998-01-15 | Daimler Benz Ag | Measuring arrangement for high-resolution measurement of magnetic bodies |
US6434138B2 (en) | 1996-05-08 | 2002-08-13 | Robert Bosch Gmbh | Process for transmitting messages by digital sound broadcasting and receiver for carrying out this process |
EP0893696A2 (en) * | 1997-07-24 | 1999-01-27 | Robert Bosch Gmbh | Arrangement for measuring an AC current |
DE19731790A1 (en) * | 1997-07-24 | 1999-01-28 | Bosch Gmbh Robert | Device for detecting an alternating current |
EP0893696A3 (en) * | 1997-07-24 | 1999-05-06 | Robert Bosch Gmbh | Arrangement for measuring an AC current |
DE29715774U1 (en) * | 1997-09-03 | 1998-03-19 | Gen Elektronik Gmbh | Electronic device |
DE19740428C2 (en) * | 1997-09-10 | 2001-03-08 | Siemens Ag | Annular coil with circular winding cross-section and process for its production |
DE19740428A1 (en) * | 1997-09-10 | 1999-03-18 | Siemens Ag | Current transformer toroidal coil with circular winding cross-section |
FR2772130A1 (en) * | 1997-12-08 | 1999-06-11 | Conception Realisation Dev Ele | Fault detector for overhead electrical-power distribution lines |
DE19755773A1 (en) * | 1997-12-16 | 1999-06-17 | Cit Alcatel | Measurement arrangement for time function of large electric current with short rise-time, especially for GTO thyristor |
DE19813890A1 (en) * | 1998-03-28 | 1999-09-30 | Abb Research Ltd | Current measurement method |
GB2353598B (en) * | 1999-08-24 | 2003-09-10 | Siemens Metering Ltd | Improvements in or relating to current measurement |
GB2353598A (en) * | 1999-08-24 | 2001-02-28 | Siemens Metering Ltd | Improvements in or relating to current measurement |
WO2001014894A1 (en) * | 1999-08-24 | 2001-03-01 | Siemens Metering Limited | Sensor for current measurement and electricity meter |
US6768322B2 (en) | 2000-03-17 | 2004-07-27 | Sauer-Danfoss Holding A/S | Device for measuring an electrical current that flows through a strip conductor |
DE10013345A1 (en) * | 2000-03-17 | 2001-10-04 | Sauer Danfoss Nordborg As Nord | Device for measuring an electrical current flowing through a conductor track |
DE10013345B4 (en) * | 2000-03-17 | 2004-08-26 | Sauer-Danfoss Holding Aps | Device for measuring an electrical current flowing through a conductor track and its use |
EP2178737A1 (en) * | 2007-07-10 | 2010-04-28 | Raytheon Sarcos, LLC | Serpentine robotic crawler having a continous track |
US8571711B2 (en) | 2007-07-10 | 2013-10-29 | Raytheon Company | Modular robotic crawler |
US8935014B2 (en) | 2009-06-11 | 2015-01-13 | Sarcos, Lc | Method and system for deploying a surveillance network |
US9031698B2 (en) | 2012-10-31 | 2015-05-12 | Sarcos Lc | Serpentine robotic crawler |
US9409292B2 (en) | 2013-09-13 | 2016-08-09 | Sarcos Lc | Serpentine robotic crawler for performing dexterous operations |
US9566711B2 (en) | 2014-03-04 | 2017-02-14 | Sarcos Lc | Coordinated robotic control |
US10071303B2 (en) | 2015-08-26 | 2018-09-11 | Malibu Innovations, LLC | Mobilized cooler device with fork hanger assembly |
US10814211B2 (en) | 2015-08-26 | 2020-10-27 | Joseph Pikulski | Mobilized platforms |
US10807659B2 (en) | 2016-05-27 | 2020-10-20 | Joseph L. Pikulski | Motorized platforms |
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