DE20017512U1 - Device for measuring current on printed circuit boards - Google Patents
Device for measuring current on printed circuit boardsInfo
- Publication number
- DE20017512U1 DE20017512U1 DE20017512U DE20017512U DE20017512U1 DE 20017512 U1 DE20017512 U1 DE 20017512U1 DE 20017512 U DE20017512 U DE 20017512U DE 20017512 U DE20017512 U DE 20017512U DE 20017512 U1 DE20017512 U1 DE 20017512U1
- Authority
- DE
- Germany
- Prior art keywords
- conductor
- current
- magnetic field
- field sensor
- printed circuit
- 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 - Lifetime
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
- G01R15/207—Constructional details independent of the type of device used
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Description
HONEYWELL AG 11. Oktober 2000HONEYWELL AG October 11, 2000
Kaiserleistraße 39 H26736 (786) DEKaiserleistrasse 39 H26736 (786) DE
D-63067 Offenbach am Main St/ep
5D-63067 Offenbach am Main St/ep
5
Die Erfindung betrifft eine Einrichtung zum Messen von Strom auf Leiterplatten gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for measuring current on printed circuit boards according to the preamble of claim 1.
Stromsensoren sind aus dem Stand der Technik hinlänglich bekannt. Derartige Stromsensoren bestehen aus einem Magnetfeldsensor, einem Eisenkern und einem Verstärker. Der Eisenkern umgibt eine den zu messenden Strom führende Stromleitung aus vorzugsweise Kupfer, wodurch im Eisenkern anhängig von der Stärke des Stroms ein Magnetfeld erzeugt wird. Innerhalb eines Spalts des Eisenkerns ist der Magnetfeldsensor angeordnet. Die Feldlinien des im Eisenkern vom zu messenden Strom induzierten Magnetfelds bewegen sich so durch den Magnetfeldsensor, der ein dem zu messenden Strom proportionales Ausgangssignal erzeugt, welches vom Verstärker verstärkt wird. Diesbezügliche Details können dem Aufsatz „Analoge Stromsensoren zum Messen aller Stromformen, Honeywell Outline, Jahrgang 9 (1995), Heft 2, S. 10-11" entnommen werden. Der bei derartigen Stromsensoren übliche Eisenkern übernimmt in erster Linie zwei Aufgaben, nämlich einerseits die Leitung des vom zu messenden Strom induzierten Magnetfelds durch den Magnetfeldsensor und andererseits die Abschirmung des Magnetfeldsensors gegenüber Fremdfeldern. Durch die Verwendung der Eisenkerne sind die Stromsensoren nach dem Stand der Technik jedoch für Strommessungen auf Leiteiplatten zu groß und daher ungeeignet.Current sensors are well known in the art. Such current sensors consist of a magnetic field sensor, an iron core and an amplifier. The iron core surrounds a current line, preferably made of copper, that carries the current to be measured, whereby a magnetic field is generated in the iron core depending on the strength of the current. The magnetic field sensor is arranged within a gap in the iron core. The field lines of the magnetic field induced in the iron core by the current to be measured move through the magnetic field sensor, which generates an output signal proportional to the current to be measured, which is amplified by the amplifier. Details on this can be found in the article "Analog current sensors for measuring all forms of current, Honeywell Outline, Volume 9 (1995), Issue 2, pp. 10-11". The iron core commonly used in such current sensors primarily performs two tasks, namely, on the one hand, conducting the magnetic field induced by the current to be measured through the magnetic field sensor and, on the other hand, shielding the magnetic field sensor from external fields. However, the use of iron cores means that the current sensors according to the state of the art are too large for current measurements on circuit boards and are therefore unsuitable.
Hiervon ausgehend liegt der vorliegenden Erfindung das Problem zugrunde eine neuartige Einrichtung zum Messen von Strom auf Leiterplatten zu schaffen.Based on this, the present invention is based on the problem of creating a novel device for measuring current on printed circuit boards.
Die Lösung dieses Problems gelingt mit der in Anspruch 1 definierten Einrichtung.This problem is solved by the device defined in claim 1.
• « ■ ··• « ■ ··
Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der Beschreibung. Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnungen näher erläutert. In der Zeichnung zeigt:
5Preferred developments of the invention emerge from the subclaims and the description. An embodiment of the invention is explained in more detail below with reference to the drawings. The drawing shows:
5
Fig. 1 eine stark vereinfachte Prinzipskizze der erfindungsgemäßen Einrichtung zum Messen von Strom auf Leiterplatten in Seitenansicht, undFig. 1 is a highly simplified schematic diagram of the device according to the invention for measuring current on printed circuit boards in side view, and
Fig. 2 eine stark vereinfachte Prinzipskizze der erfindungsgemäßen gemäß Fig. 1 in Draufsicht entlang der Linie II-II in Fig. 1.Fig. 2 is a highly simplified schematic diagram of the invention according to Fig. 1 in plan view along the line II-II in Fig. 1.
Die in der Zeichnung dargestellte Einrichtung 10 dient dem Messen von Strom auf Leiterplatten.The device 10 shown in the drawing is used to measure current on printed circuit boards.
Figuren 1, 2 zeigen eine Leiterplatte 11 mit einem auf der Leiterplatte 11 U-förmig angeordneten Stromleiter 12, wobei ein Schenkel des U-fÖrmig angeordneten Stromleiters 12 einen Hinleiter 13 und der andere Schenkel des Stromleiters 12 einen Rückleiter 14 bildet. Der im Stromleiter 12 fließende Strom ist zu messen.Figures 1, 2 show a circuit board 11 with a current conductor 12 arranged in a U-shape on the circuit board 11, wherein one leg of the U-shaped current conductor 12 forms a forward conductor 13 and the other leg of the current conductor 12 forms a return conductor 14. The current flowing in the current conductor 12 is to be measured.
Oberhalb des Stromleiters 12 ist erfindungsgemäß ein Magnetfeldsensor 15 angeordnet. Der Magnetfeldsensor 15 erstreckt sich zumindest bereichsweise über den Hinleiter 13, den Rückleiter 14 und den sich zwischen Hinleiter 13 und Rückleiter 14 angeordneten Abschnitt 20 der Leiterplatte 11.According to the invention, a magnetic field sensor 15 is arranged above the current conductor 12. The magnetic field sensor 15 extends at least in part over the forward conductor 13, the return conductor 14 and the section 20 of the circuit board 11 arranged between the forward conductor 13 and the return conductor 14.
Gemäß Figur 1 kann der Magnetfeldsensor 15, der seine Meßwerte über entsprechende Anschlüsse 16 an einen weiter nicht-dargestellten Verstärker liefert, auf einer Trägerplatte 17 positioniert sein. Ein Anschluß 16 kann der Spannungsversorgung des Magnetfeldsensors dienen.According to Figure 1, the magnetic field sensor 15, which supplies its measured values via corresponding connections 16 to an amplifier (not shown), can be positioned on a carrier plate 17. A connection 16 can serve to supply voltage to the magnetic field sensor.
Die Anordnung aus Hinleiter 13, Rückleiter 14 und Magnetfeldsensor 15 ist zumindest oberseitig und unterseitig von Platten 18, 19 aus ferritischem Material überdeckt.The arrangement of forward conductor 13, return conductor 14 and magnetic field sensor 15 is covered at least on the top and bottom sides by plates 18, 19 made of ferritic material.
Besonders bevorzugt ist eine Ausgestaltung, bei der die Anordnung aus Hinleiter 13, Rückleiter 14 und Magnetfeldsensor 15 allseitig von Platten aus ferritischem MaterialParticularly preferred is an embodiment in which the arrangement of forward conductor 13, return conductor 14 and magnetic field sensor 15 is surrounded on all sides by plates made of ferritic material
überdeckt ist, also nicht nur oberseitig und unterseitig, sondern auch an allen vier Seitenflächen des von den Platten 18, 19 begrenzten Raums (nicht dargestellt). In diesem Fall würden die Platten aus ferritischem Material die Anordnung aus Hinleiter 13, Rückleiter 14 und Magnetfeldsensor 15 gehäuseförmig umschließen.
5is covered, i.e. not only on the top and bottom, but also on all four side surfaces of the space delimited by the plates 18, 19 (not shown). In this case, the plates made of ferritic material would enclose the arrangement of the forward conductor 13, return conductor 14 and magnetic field sensor 15 in the form of a housing.
5
Der so ausgebildete erfindungsgemäße Stromsensor kommt ohne Eisenkern aus. Bedingt durch die U-förmige Anordnung des Stromleiters 12 werden die vom im Stromleiter 12 geführten Strom induzierten Feldlinien durch den Magnetfeldsensor 15 bewegt. Die Platten aus ferritischem Material übernehmen die Abschirmung des Magnetfeldsensors 15 gegenüber Fremdfeldem. Die erfindungsgemäße Einrichtung 10 zum Messen von Strom ist von extrem kompakter Bauform und daher für die Strommessung auf Leiterplatten besonders gut geeignet.The current sensor according to the invention designed in this way does not require an iron core. Due to the U-shaped arrangement of the current conductor 12, the field lines induced by the current carried in the current conductor 12 are moved by the magnetic field sensor 15. The plates made of ferritic material shield the magnetic field sensor 15 from external fields. The device 10 according to the invention for measuring current is of extremely compact design and is therefore particularly well suited for measuring current on circuit boards.
Beim Magnetfeldsensor 15 handelt es sich um einen einzigen Hall-Sensor. Kompensationsschaltungen zum Eliminieren von Fremdfeldeffekten sind nicht erforderlich. Es können Standard-Hall-Sensoren verwendet werden.The magnetic field sensor 15 is a single Hall sensor. Compensation circuits to eliminate external field effects are not required. Standard Hall sensors can be used.
Die Platten aus ferritischem Material sind vorzugsweise aus Eisen oder einer Eisenlegierung hergestellt. Der Stromleiter 15 besteht vorzugsweise aus Kupfer.
20The plates made of ferritic material are preferably made of iron or an iron alloy. The current conductor 15 is preferably made of copper.
20
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20017512U DE20017512U1 (en) | 2000-10-11 | 2000-10-11 | Device for measuring current on printed circuit boards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20017512U DE20017512U1 (en) | 2000-10-11 | 2000-10-11 | Device for measuring current on printed circuit boards |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE20017512U1 true DE20017512U1 (en) | 2001-02-08 |
Family
ID=7947567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE20017512U Expired - Lifetime DE20017512U1 (en) | 2000-10-11 | 2000-10-11 | Device for measuring current on printed circuit boards |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE20017512U1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202006013311U1 (en) * | 2006-08-30 | 2008-01-03 | Merten Gmbh & Co. Kg | Connection unit of a bus system |
| US7375507B2 (en) | 2005-10-08 | 2008-05-20 | Melexis Technologies Sa | Assembly group for current measurement |
| WO2009080286A1 (en) * | 2007-12-22 | 2009-07-02 | Sensitec Gmbh | Arrangement for the potential-free measurement of currents |
| EP3739345A1 (en) * | 2019-05-16 | 2020-11-18 | Siemens Aktiengesellschaft | Detection of an electric flow in an electric circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19549181A1 (en) | 1995-12-30 | 1997-07-03 | Bosch Gmbh Robert | Appliance for measuring the current in conductor |
| US5883567A (en) | 1997-10-10 | 1999-03-16 | Analog Devices, Inc. | Packaged integrated circuit with magnetic flux concentrator |
| DE4017280C2 (en) | 1989-05-30 | 1999-05-06 | Lem Liaisons Electron Mec | Current converter device for measuring an electric current |
| DE19819470A1 (en) | 1998-01-08 | 1999-07-22 | Lust Antriebstechnik Gmbh | Non-potential measuring of currents by recording magnetic field |
| DE19821492A1 (en) | 1998-05-14 | 1999-11-25 | Daimler Chrysler Ag | Contactless measuring of current in conductor track of e.g. battery short-circuit safety system in motor vehicle |
-
2000
- 2000-10-11 DE DE20017512U patent/DE20017512U1/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4017280C2 (en) | 1989-05-30 | 1999-05-06 | Lem Liaisons Electron Mec | Current converter device for measuring an electric current |
| DE19549181A1 (en) | 1995-12-30 | 1997-07-03 | Bosch Gmbh Robert | Appliance for measuring the current in conductor |
| US5883567A (en) | 1997-10-10 | 1999-03-16 | Analog Devices, Inc. | Packaged integrated circuit with magnetic flux concentrator |
| DE19819470A1 (en) | 1998-01-08 | 1999-07-22 | Lust Antriebstechnik Gmbh | Non-potential measuring of currents by recording magnetic field |
| DE19821492A1 (en) | 1998-05-14 | 1999-11-25 | Daimler Chrysler Ag | Contactless measuring of current in conductor track of e.g. battery short-circuit safety system in motor vehicle |
Non-Patent Citations (1)
| Title |
|---|
| LEMME,Helmut: Ein Modul für alle Strombereiche. In: Elektronik 18/1999, S.71-76 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7375507B2 (en) | 2005-10-08 | 2008-05-20 | Melexis Technologies Sa | Assembly group for current measurement |
| DE202006013311U1 (en) * | 2006-08-30 | 2008-01-03 | Merten Gmbh & Co. Kg | Connection unit of a bus system |
| WO2009080286A1 (en) * | 2007-12-22 | 2009-07-02 | Sensitec Gmbh | Arrangement for the potential-free measurement of currents |
| US8680856B2 (en) | 2007-12-22 | 2014-03-25 | Sensitec Gmbh | Arrangement for the potential-free measurement of currents |
| EP3739345A1 (en) * | 2019-05-16 | 2020-11-18 | Siemens Aktiengesellschaft | Detection of an electric flow in an electric circuit |
| WO2020229326A1 (en) * | 2019-05-16 | 2020-11-19 | Siemens Aktiengesellschaft | Measuring assembly for detecting a direct current |
| US12013418B2 (en) | 2019-05-16 | 2024-06-18 | Siemens Aktiengesellschaft | Measuring assembly for detecting a direct current |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1811311B1 (en) | Device for measuring current | |
| DE69833953T2 (en) | SELF-POWERED CIRCULATOR | |
| EP0247197B1 (en) | Device for measuring uv-radiation | |
| DE19914772A1 (en) | Current sensors | |
| WO1996010186A1 (en) | Device for measuring an electric current | |
| DE982678T1 (en) | Digitization board with an active area and several border areas | |
| DE10045563A1 (en) | Assembly power semiconductor device with integrated current measurement function, has hall effect sensor that responses to magnetic field to control current flow in semiconductor component | |
| DE29506883U1 (en) | Current sensor based on the compensation principle | |
| DE3626328A1 (en) | Device for the potential-isolated measurement value detection of alternating currents | |
| DE19542899A1 (en) | AC sensor based on a parallel plate geometry and with a self-powered shunt | |
| DE20017512U1 (en) | Device for measuring current on printed circuit boards | |
| DE3012979A1 (en) | FORCE MEASURING OR WEIGHING DEVICE WITH ELECTROMAGNETIC FORCE COMPENSATION AND CAPACITIVE POSITION SENSOR | |
| DE19806290A1 (en) | Integrated distance measuring circuit | |
| DE19928399B4 (en) | current sensor | |
| DE69221436T2 (en) | Electronic watt-hour meter | |
| DE19819470B4 (en) | Method for the potential-free measurement of currents by the recording of the magnetic field caused by them and devices for carrying out the method | |
| EP0886147A1 (en) | Device for obtaining a current-proportional magnetic induction at the position of a magnetic field sensor | |
| DE102005028572A1 (en) | Fold magnetic core for hall sensor arrangement, has air gap bridged by yoke bodies overlapping with side pieces, where specific distance exhibits between bodies and pieces, and space provided between fold positions | |
| DE69217872T2 (en) | Field compensation for cathode ray tube monitor | |
| DE3147715A1 (en) | Device for measuring a current in a conductor | |
| DE2933129C2 (en) | Device for measuring magnetic fields | |
| DE3136049A1 (en) | Electrical balance | |
| DE8409629U1 (en) | ELECTRIC SCALE | |
| DE19614973A1 (en) | AC sensor with parallel plate geometry and shunt for self powering | |
| DE19636757C1 (en) | Magnetic remanence measuring device for permanent magnet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R207 | Utility model specification |
Effective date: 20010315 |
|
| R163 | Identified publications notified |
Effective date: 20010131 |
|
| R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20031120 |
|
| R151 | Utility model maintained after payment of second maintenance fee after six years |
Effective date: 20061114 |
|
| R152 | Utility model maintained after payment of third maintenance fee after eight years |
Effective date: 20081118 |
|
| R071 | Expiry of right |