DE102015225902A1 - Magnetic field sensor device and method for detecting the position of a selector lever of a motor vehicle - Google Patents
Magnetic field sensor device and method for detecting the position of a selector lever of a motor vehicle Download PDFInfo
- Publication number
- DE102015225902A1 DE102015225902A1 DE102015225902.1A DE102015225902A DE102015225902A1 DE 102015225902 A1 DE102015225902 A1 DE 102015225902A1 DE 102015225902 A DE102015225902 A DE 102015225902A DE 102015225902 A1 DE102015225902 A1 DE 102015225902A1
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- Germany
- Prior art keywords
- magnetic field
- sensor
- selector lever
- magnetic
- detection device
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- 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.)
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Classifications
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- 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
- G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/08—Range selector apparatus
- F16H59/10—Range selector apparatus comprising levers
- F16H59/105—Range selector apparatus comprising levers consisting of electrical switches or sensors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
-
- 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
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
- G01D3/028—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure
- G01D3/036—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure on measuring arrangements themselves
- G01D3/0365—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure on measuring arrangements themselves the undesired influence being measured using a separate sensor, which produces an influence related signal
-
- 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
- G01D5/142—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 using Hall-effect devices
- G01D5/145—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 using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/30—Sensors
- B60Y2400/301—Sensors for position or displacement
- B60Y2400/3012—Sensors for position or displacement using Hall effect
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1208—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures with diagnostic check cycles; Monitoring of failures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1208—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures with diagnostic check cycles; Monitoring of failures
- F16H2061/1216—Display or indication of detected failures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1224—Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
Abstract
Magnetfeldsensorvorrichtung (1) zum Positionserfassen eines Wählhebels (2) eines Kraftfahrzeugs, mit wenigstens einem einen magnetischen Feld (6) erzeugenden Magnetgeber (3) und wenigstens zwei Erfassungseinrichtungen (4, 5) zur Erfassung von Magnetfelder. Der Magnetgeber (3) ist mit dem Wählhebel (2) gekoppelt ist und relativ beweglich zu der Erfassungseinrichtungen (4, 5) angeordnet. Wenigstens eine der Erfassungseinrichtungen (4, 5) ist als eine Diagnoseerfassungseinrichtung (5) ausgeführt, nämlich sie so angeordnet ist, dass sie in allen Positionen des Wählhebels (2) außerhalb des wirksamen magnetischen Feldes (6) des Magnetgebers (3) bzw. allen Magnetgeber liegt. Somit kann ein an die Magnetfeldsensorvorrichtung (1) störend wirkende magnetischer Fremdfeld (8), der auch die Erfassungseinrichtungen (4) beeinflusst auf einfache Weise erkannt werden.Magnetic field sensor device (1) for detecting the position of a selector lever (2) of a motor vehicle, comprising at least one magnetic transmitter (3) generating a magnetic field (6) and at least two detecting devices (4, 5) for detecting magnetic fields. The magnetic encoder (3) is coupled to the selector lever (2) and arranged relatively movable to the detection means (4, 5). At least one of the detection devices (4, 5) is designed as a diagnosis detection device (5), namely that it is arranged in all positions of the selector lever (2) outside the effective magnetic field (6) of the magnetic transmitter (3) or Magnetic encoder is located. Thus, an external magnetic field (8) that has a disturbing effect on the magnetic field sensor device (1) and that also influences the detection devices (4) can be detected in a simple manner.
Description
Die Erfindung bezieht sich auf eine Magnetfeldsensorvorrichtung zum Positionserfassen eines Wählhebels eines Kraftfahrzeugs, sowie ein Verfahren zum Positionserfassen eines Wählhebels eines Kraftfahrzeugs. The invention relates to a magnetic field sensor device for detecting the position of a selector lever of a motor vehicle, as well as a method for detecting the position of a selector lever of a motor vehicle.
Bei heutigen Fahrzeugen insbesondere mit Automatikgetrieben werden Positionen des Wählhebels zum Auswählen der Fahrmodi bzw. der einzelnen Gänge, über magnetisch sensitive Sensoren ermittelt, die einen Magnetfeld eines Magnetgebers überwachen, auswerten und an die Fahrzeugelektronik, typischerweise ein Getriebesteuergerät, weitergeben. Typischerweise ist wenigstens ein Magnetgeber an dem Wählhebel befestigt und bewegt sich relativ gegenüber dem wenigstens einem magnetisch sensitiven Sensor, der fahrzeugfest angeordnet ist. Bei der Sensorik kann sich um ein Magnetometer mit integriertem Schaltkreis handeln welches die Stellung eines sich mit dem Wählhebel drehenden Magneten erkennt, der vor dem Magnetometer platziert ist. Andere Sensoriksysteme verfügen zum Beispiel über mehrere digitale Hall-Sensoren, welche jede Wählhebelposition einzeln erkennen. In today's vehicles, in particular with automatic transmissions, positions of the selector lever for selecting the driving modes or the individual gears, determined by magnetically sensitive sensors that monitor a magnetic field of a magnetic encoder, evaluate and pass to the vehicle electronics, typically a transmission control unit. Typically, at least one magnetic encoder is attached to the selector lever and moves relative to the at least one magnetically sensitive sensor which is fixed to the vehicle. The sensor may be a magnetometer with integrated circuit which detects the position of a rotating with the selector lever magnet, which is placed in front of the magnetometer. Other sensor systems have, for example, several digital Hall sensors, which recognize each selector lever position individually.
Nachteil der bekannten Lösungen ist, dass durch Anlegen eines Fremdmagnetfeldes die Sensorik des Wählhebels gestört werden kann. Dabei kann die Sensorik so beeinflusst werden, dass eine andere Wählhebelposition erfasst und weitergegeben wird als die wirkliche Position des Wählhebels ist. Dieses Verhalten ist sicherheitskritisch solange die Elektronik nicht den Fehler erkennt und ausgibt. Disadvantage of the known solutions is that by applying a foreign magnetic field, the sensors of the selector lever can be disturbed. In this case, the sensor system can be influenced so that a different selector lever position is detected and passed on than the actual position of the selector lever. This behavior is safety-critical as long as the electronics does not detect and output the error.
Bei der Auswahl des Bauraums eines Wählhebels mit innenliegender Elektronik muss darauf geachtet werden, dass sich keine Fremdmagnetfelder oder stromführende Leitungen im Einflussbereich des Sensors befinden. Insbesondere Ablageflächen z.B. Cupholder neben der Schaltbetätigung bieten einen Ablageraum für Magneten, deren Fremdfelder zu unerwünschten Reaktionen der Elektronik führen können. Die Lage des Sensors innerhalb der Schaltbetätigung ist so zu wählen, dass er möglichst vor Störfeldern geschützt ist. Dies führt unter Umständen zu aufwendigen Konstruktionen. When selecting the installation space of a selector lever with internal electronics, care must be taken to ensure that no foreign magnetic fields or live cables are within the influence of the sensor. In particular, shelves e.g. Cupholders in addition to the switching operation provide a storage space for magnets whose external fields can lead to unwanted reactions of the electronics. The position of the sensor within the switching operation should be selected so that it is as far as possible protected from interference fields. This may lead to elaborate constructions.
Es ist Aufgabe der vorliegenden Erfindung ausgehend aus dem Stand der Technik eine Magnetfeldsensorvorrichtung bereitzustellen, die robuster gegen Fremdmagnetfelder ist und dabei einfache und nicht anfällige Konstruktion hat. It is an object of the present invention, starting from the prior art, to provide a magnetic field sensor device which is more robust against foreign magnetic fields and has a simple and non-susceptible construction.
Die Aufgabe wird mit der Magnetfeldsensorvorrichtung mit den Merkmalen des Patentanspruchs 1 und mit dem Verfahren mit den Merkmalen des Patentanspruchs 9 gelöst. The object is achieved with the magnetic field sensor device having the features of
Weitere vorteilhafte Ausführungen der Erfindung sind Gegenstand der Unteransprüche. Further advantageous embodiments of the invention are the subject of the dependent claims.
In der
Wird nun von außen mittels einer Fremdmagnetfeldquelle
Es können mehrere Diagnoseerfassungseinrichtung
In einem Ausführungsbeispiel wird ein Diametralmagnet als Magnetgeber
Denkbar wäre auch ein induktives System, das direkt dynamische Störfelder detektiert oder der Einsatz eines Sensors der eine qualitative Auswertung der Fremdfelder in eine, zwei oder drei Feldrichtungen ermöglicht. It would also be conceivable to have an inductive system which directly detects dynamic interference fields or the use of a sensor which enables a qualitative evaluation of the external fields in one, two or three field directions.
Die Lösung mit einem analogen Hallsensor benötigt wenig zusätzliche Bauteile und bietet eine komfortable Möglichkeit die Empfindlichkeit des Sensors einzustellen. Je nach Anwendung kann der Einsatz mehrerer Sensoren oder eines aufwändigeren Sensors für bis zu drei Feldrichtungen sinnvoll sein. The solution with an analog Hall sensor requires few additional components and offers a convenient way to adjust the sensitivity of the sensor. Depending on the application, the use of multiple sensors or a more sophisticated sensor for up to three field directions may be useful.
Das bestehende Sensorkonzept kann grundsätzlich beibehalten werden. Lediglich der oder die weiteren Sensoren müssten auf der Platine platziert und ausgewertet werden. Die Position des Sensors ist unabhängig von den äußeren Abmessungen. Bei der Konstruktion der Schaltbetätigung muss bzgl. Störfelder keine Rücksicht auf Ablageflächen und stromführende Leitungen genommen werden. The existing sensor concept can basically be retained. Only the or the other sensors would have to be placed on the board and evaluated. The position of the sensor is independent of the external dimensions. When designing the switching operation, no consideration must be given to storage areas and live cables with regard to interference fields.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102015225902.1A DE102015225902A1 (en) | 2015-12-18 | 2015-12-18 | Magnetic field sensor device and method for detecting the position of a selector lever of a motor vehicle |
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DE102015225902.1A DE102015225902A1 (en) | 2015-12-18 | 2015-12-18 | Magnetic field sensor device and method for detecting the position of a selector lever of a motor vehicle |
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DE102015225902A1 true DE102015225902A1 (en) | 2017-06-22 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3617657A1 (en) * | 2018-08-28 | 2020-03-04 | Melexis Technologies SA | Magnetic position sensor system and method |
FR3131954A1 (en) * | 2022-01-18 | 2023-07-21 | Lacroix Group | Control device and associated actuator |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10334204A1 (en) * | 2003-07-26 | 2005-03-10 | Volkswagen Ag | Force, torque, length or angle sensor unit has processor subtracting correction signal for disturbing magnetic fields from sensor outside measurement magnetic field |
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2015
- 2015-12-18 DE DE102015225902.1A patent/DE102015225902A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10334204A1 (en) * | 2003-07-26 | 2005-03-10 | Volkswagen Ag | Force, torque, length or angle sensor unit has processor subtracting correction signal for disturbing magnetic fields from sensor outside measurement magnetic field |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3617657A1 (en) * | 2018-08-28 | 2020-03-04 | Melexis Technologies SA | Magnetic position sensor system and method |
CN110864612A (en) * | 2018-08-28 | 2020-03-06 | 迈来芯电子科技有限公司 | Magnetic position sensor system and method |
US11098996B2 (en) | 2018-08-28 | 2021-08-24 | Melexis Technologies Sa | Magnetic position sensor system and method |
FR3131954A1 (en) * | 2022-01-18 | 2023-07-21 | Lacroix Group | Control device and associated actuator |
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