DE102008007513A1 - Arrangement for a distance sensor - Google Patents

Arrangement for a distance sensor Download PDF

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Publication number
DE102008007513A1
DE102008007513A1 DE102008007513A DE102008007513A DE102008007513A1 DE 102008007513 A1 DE102008007513 A1 DE 102008007513A1 DE 102008007513 A DE102008007513 A DE 102008007513A DE 102008007513 A DE102008007513 A DE 102008007513A DE 102008007513 A1 DE102008007513 A1 DE 102008007513A1
Authority
DE
Germany
Prior art keywords
arrangement
elevations
circuit board
printed circuit
distance sensor
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.)
Withdrawn
Application number
DE102008007513A
Other languages
German (de)
Inventor
Peter Dr. Kornetzky
Hans-Ulrich Mohr
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler KG
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 Schaeffler KG filed Critical Schaeffler KG
Priority to DE102008007513A priority Critical patent/DE102008007513A1/en
Priority to PCT/DE2008/001189 priority patent/WO2009015638A1/en
Publication of DE102008007513A1 publication Critical patent/DE102008007513A1/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/001—Constructional details of gauge heads
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/023—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring distance between sensor and object
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/2006—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
    • G01D5/2013—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils by a movable ferromagnetic element, e.g. a core

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

Die Erfindung betrifft eine Anordnung für einen Abstandssensor aus einem magnetisch leitfähigen Material, mit mindestens zwei säulenförmigen Erhebungen und um diese Erhebungen angebrachten Wicklungen, wobei die Wicklungen als flache Leiterkarte ausgeführt ist, die auf die säulenförmigen Erhebungen aufgesteckt sind.The invention relates to an arrangement for a distance sensor made of a magnetically conductive material, with at least two columnar elevations and windings mounted around these elevations, wherein the windings is designed as a flat printed circuit board, which are attached to the columnar elevations.

Description

Gebiet der ErfindungField of the invention

Die Erfindung betrifft eine technische Ausführungsform für Abstandssensoren, die bei Annäherung eines elektrisch und/oder magnetisch leitfähigen Körpers eine Änderung der Impedanz einer Anordnung von Magnetspulen erfahren. Bekannte Anordnungen dafür sind z. B. ringförmige Anordnungen zur Positionserfassung in Magnetlagern. Die Spulenanordnungen werden hierbei zumeist als Drahtspulen auf Wickelkörpern realisiert. Erfindungsgemäß sollen die Spulenanordnungen als ein- oder mehrlagige gedruckte Leiterkartenanordnungen (Leiterplatten) ausgeführt werden. Einige sich daraus ergebende Vorteile sind nachfolgend aufgeführt:

  • 1. Einfache und kostengünstige Herstellung unter Verwendung bekannter und verbreitet verfügbarer Technologien, ggf. auch als Massenware
  • 2. Einfache Montage durch simples Aufstecken
  • 3. Reproduzierbare geometrische Anordnung der Leiter zur Erzielung einer hohen Fertigungsgenauigkeit
  • 4. Einfache Anpassung an Magnetkreise mit unterschiedlichen Geometrien möglich.
The invention relates to a technical embodiment of distance sensors, which undergo a change in the impedance of an arrangement of magnetic coils when approaching an electrically and / or magnetically conductive body. Known arrangements for this are z. B. annular arrangements for position detection in magnetic bearings. The coil arrangements are realized here mostly as wire coils on wound bodies. According to the invention, the coil arrangements are to be designed as single-layer or multi-layer printed circuit board arrangements (circuit boards). Some of the resulting benefits are listed below:
  • 1. Simple and cost-effective production using known and widely available technologies, possibly also as mass-produced goods
  • 2. Easy installation by simply plugging
  • 3. Reproducible geometric arrangement of the conductors to achieve high manufacturing accuracy
  • 4. Easy adaptation to magnetic circuits with different geometries possible.

1 zeigt die Seitenansicht eines beispielhaft ausgewählten Magnetkreises eines Abstandssensors ohne die erforderlichen Wicklungen. Auf die säulenförmigen Erhebungen A und B soll jeweils eine Wicklung aufgebracht werden. Die Seitenkanten der säulenförmigen Erhebungen verlaufen dabei parallel, damit die Spulenanordnung vollständig aufgesteckt werden kann. Die geometrische Ausführung der Enden der Säulen ist an die jeweilige Sensoraufgabe angepasst. Im vorliegenden Fall handelt es sich um eine Welle mit kreisrunder Außenkontur, so dass die Enden der Säulen als Kreisbögen ausgeführt sind. 2 zeigt die Draufsicht einer möglichen Ausführungsform für eine als Leiterkarte ausgeführte Spulenanordnung in ihrer geometrischen Form. Die ausgesparten Öffnungen der Leiterkarte sind an die Geometrie der Säulen angepasst und erlauben ein einfaches Aufstecken auf den Magnetkreis. 3 zeigt eine Explosionszeichnung, die den Zusammenbau der Einzelteile verdeutlicht. 1 shows the side view of an exemplary selected magnetic circuit of a distance sensor without the required windings. In each case a winding is to be applied to the columnar elevations A and B. The side edges of the columnar elevations run parallel, so that the coil assembly can be completely plugged. The geometric design of the ends of the columns is adapted to the respective sensor task. In the present case, it is a shaft with a circular outer contour, so that the ends of the columns are designed as circular arcs. 2 shows the top view of a possible embodiment of a designed as a printed circuit board coil assembly in its geometric shape. The recessed openings in the circuit board are adapted to the geometry of the columns and allow easy attachment to the magnetic circuit. 3 shows an exploded view that illustrates the assembly of the items.

Die Ausführung der Leiterkarte als Spulenanordnung ist in 4 beispielhaft für eine Anordnung dargestellt, die aus vier säulenförmigen Erhebungen besteht. Die Leiterkarte selbst hat vier Verdrahtungsebenen, die untereinander dargestellt sind. Die dunklen Punkte kennzeichnen Durchkontaktierungen zwischen den Verdrahtungsebenen bzw. Anschlusslöcher zum Verdrahten.The embodiment of the printed circuit board as a coil arrangement is in 4 exemplified for an arrangement consisting of four columnar elevations. The circuit board itself has four levels of wiring, which are shown below each other. The dark dots indicate vias between the wiring levels or wiring holes for wiring.

Claims (6)

Anordnung für einen Abstandssensor, bestehend aus einem magnetisch leitfähigen Material, mit mindestens zwei säulenförmigen Erhebungen und um diese Erhebungen angebrachten Wicklungen, dadurch gekennzeichnet, dass die Wicklungen als flache Leiterkarte ausgeführt ist, die auf die säulenförmigen Erhebungen aufgesteckt sind.Arrangement for a distance sensor consisting of a magnetically conductive material, with at least two columnar elevations and windings mounted around these elevations, characterized in that the windings is designed as a flat printed circuit board, which are attached to the columnar elevations. Anordnungen entspr. 1, dadurch gekennzeichnet, dass alle zu einem Abstandssensor gehörenden säulenförmigen Erhebungen parallel zueinander angeordnete Seitenflächen haben.Arrangements according to 1, characterized in that all belonging to a distance sensor columnar elevations have mutually parallel side surfaces. Anordnung entspr. 1 und 2, dadurch gekennzeichnet, dass mehrere Abstandssensoren mechanisch miteinander verbunden sind, die jeweils eine separate flache Leiterkarte als Wicklung aufweisen.Arrangement according to FIGS. 1 and 2, characterized that a plurality of distance sensors are mechanically connected to one another, each having a separate flat printed circuit board as a winding. Anordnung entspr. 3, dadurch gekennzeichnet, dass mehr als 2 Abstandssensoren mechanisch miteinander verbunden sind, wobei sie eine ringförmige Anordnung bilden.Arrangement according to 3, characterized in that more than 2 distance sensors are mechanically connected to each other, being an annular Form arrangement. Anordnung entspr. 3 oder 4, dadurch gekennzeichnet, dass die Leiterkarten mechanisch und elektrisch untereinander mittels eines flexiblen Leiterkartenmaterials verbunden sind.Arrangement according to 3 or 4, characterized that the circuit boards mechanically and electrically with each other by means a flexible printed circuit board material are connected. Anordnung entspr. der vorgenannten Ansprüche, dadurch gekennzeichnet, dass die jeweiligen Leiterkarten mit mehr als einer Leiterebene ausgeführt sind, die elektrisch miteinander verbunden sind.Arrangement according to the preceding claims, characterized characterized in that the respective circuit boards with more than one Ladder level executed are electrically connected.
DE102008007513A 2007-07-30 2008-02-05 Arrangement for a distance sensor Withdrawn DE102008007513A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE102008007513A DE102008007513A1 (en) 2007-07-30 2008-02-05 Arrangement for a distance sensor
PCT/DE2008/001189 WO2009015638A1 (en) 2007-07-30 2008-07-19 Arrangement for a distance sensor

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102007035679.1 2007-07-30
DE102007035679 2007-07-30
DE102008007513A DE102008007513A1 (en) 2007-07-30 2008-02-05 Arrangement for a distance sensor

Publications (1)

Publication Number Publication Date
DE102008007513A1 true DE102008007513A1 (en) 2009-02-05

Family

ID=40176047

Family Applications (1)

Application Number Title Priority Date Filing Date
DE102008007513A Withdrawn DE102008007513A1 (en) 2007-07-30 2008-02-05 Arrangement for a distance sensor

Country Status (2)

Country Link
DE (1) DE102008007513A1 (en)
WO (1) WO2009015638A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2265046A1 (en) * 1972-05-29 1976-02-19 Krauss Maffei Ag Contactless distance measuring device - between hovering vehicle and fixed armature rail uses magnet on vehicle energised with AC
DE2916289C2 (en) * 1979-04-21 1981-01-15 Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen Measurement of the change in magnetic flux and the size of the air gap between an electromagnet and a ferromagnetic material
EP1422492A1 (en) * 2002-11-22 2004-05-26 Mecos Traxler AG Device for contact-less measurement of distances in multiple directions
IL153894A (en) * 2003-01-12 2010-05-31 Nova Measuring Instr Ltd Method and system for thickness measurements of thin conductive layers
US7986139B2 (en) * 2005-06-26 2011-07-26 Amiteq Co., Ltd. Position sensor having stacked flat coils

Also Published As

Publication number Publication date
WO2009015638A1 (en) 2009-02-05

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Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 H, DE

R081 Change of applicant/patentee

Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE

Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE

Effective date: 20120823

R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee

Effective date: 20130903