EP2516967A2 - Agencement de capteurs de champ magnétique pour la détermination des courses de composants mobiles - Google Patents
Agencement de capteurs de champ magnétique pour la détermination des courses de composants mobilesInfo
- Publication number
- EP2516967A2 EP2516967A2 EP10768240A EP10768240A EP2516967A2 EP 2516967 A2 EP2516967 A2 EP 2516967A2 EP 10768240 A EP10768240 A EP 10768240A EP 10768240 A EP10768240 A EP 10768240A EP 2516967 A2 EP2516967 A2 EP 2516967A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- magnetic field
- field sensor
- magnet
- sensor arrangement
- arrangement 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.)
- Withdrawn
Links
Classifications
-
- 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
- G01D5/22—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 differentially influencing two coils
- G01D5/2291—Linear or rotary variable differential transformers (LVDTs/RVDTs) having a single primary coil and two secondary coils
Definitions
- the invention relates to a magnetic field sensor arrangement for path detection on rotationally and / or linearly moved components, in which spatial components of a magnetic field change over the path to be detected and can be detected accordingly, according to the features of claim 1. that for example in speed and position sensors, as z.
- a rotational movement or position change is detected by a rotation or the change in position corresponding change in a magnetic field.
- magnetic sensors known per se are generally used, which depending on the application and field of application can be Hall sensors, AMR sensors, GMR sensors, TMR sensors or, in general, XMR sensors.
- the invention is therefore based on a magnetic field sensor arrangement for detecting the position of moving components, in which spatial components of the magnetic field of a magnetic component or magnet system on the moving component change in their direction over the path to be detected on the magnetic component and thereby the relative position A sensor can be detected accordingly.
- the magnetic field of the magnetic component is at a predetermined angle between the axial direction and radial alignment with the direction of movement of the moving component is aligned.
- the angular range of the detectable magnetic field directions can be up to 200 ° in the course of the path detection.
- a magnetized component on an actuating element for. B. in vehicle braking systems, be mounted that at least in a further axis in addition to a linear direction to be detected, usually rotatable or in any other degree of freedom moves.
- the invention is also suitable for cramped installation situations in a motor vehicle and, on the other hand, can also be used outside of vehicle brake systems in a wide variety of applications.
- sensors with an XMR effect or Hall sensors are used, each detecting the changing in the course of the linear movement or a movement in other degrees of freedom direction of the magnetic field.
- the angle to the linear direction of movement of the component moved in rotation is advantageously in the range of 45 ° in a preferred exemplary embodiment.
- the magnetic circuit has at least one magnetization direction which is different from the axis of the movement direction but is not perpendicular to the axis of the movement direction. Due to this so-called oblique direction of the magnetic field, a magnetic field is generated on the sensor, which has a relatively wide measuring range with regard to the detectable directional differences of the field lines.
- the magnetic field directions of these magnets may also differ from one another.
- this magnetic circuit is rotationally symmetrical and is thus rotatable about the axis of the direction of movement, but without causing a change in the direction of the magnetic field on the scanning sensor during the rotation.
- the magnetic circuit for the magnetic field sensor according to the invention thus preferably also consists of at least one magnet which is rotatable about the axis of the linear direction of motion and generates a magnetic field which continuously and monotonously changes the magnetic field direction over the linear path to be measured.
- the magnet system can be shorter than the measuring path.
- a relatively short magnetic field sensor with a likewise relatively short magnet system can be realized, but a relatively long measuring path (magnetic field sensor and magnet system are shorter than the measuring path) for applications with limited space can be achieved. Nevertheless, the magnetic circuit described here produces a maximum detectable change in the magnetic field orientation over the measuring path.
- the invention can be implemented with a flexible magnet system with regard to the number of magnets, the magnetization directions (individually or in combination) and permits use in different installation spaces, in different applications and with different measurement paths. Short description of the drawing
- FIG. 1 shows a schematic representation of a so-called oblique magnetization of two individual magnets and a sensor scanning the magnetic field direction.
- Figure 2 is a schematic representation of a so-called oblique magnetization of a single magnet and a magnetic field scanning sensor.
- FIG. 3 shows an exemplary embodiment of an arrangement for measuring pedal travel in a motor vehicle with a magnetic field sensor arrangement according to the invention.
- FIG. 4 shows a detailed view of a ring magnet of the magnetic field sensor arrangement according to FIG. 3.
- a magnetic circuit shown schematically in FIG. 1 to explain the invention consists of two individual magnets 1 and 2 whose magnetic field lines 3 and 4, which are inclined here in the preferred direction, are shown schematically.
- the magnetic field lines 3 or 4 intersect a magnetic-field-sensitive sensor 5 (here a field line 3 in the case shown), wherein it can be seen that the direction of the respective field lines 3 or 4 depends on which relative position the sensor 5 is on the linear path 6 of the magnetic circuit is currently located. If one now uses a sensor 5, for example an XMR sensor or a Hall sensor, whose output signal is currently dependent on the direction of the intersecting magnetic field lines 3 or 4, a relative position determination between the magnetic circuit with the magnets 1, 2 is with this basic arrangement and the sensor 5 possible.
- FIG. 2 shows a further possibility of such a position determination with a single magnet 7 which is magnetized obliquely in the preferred direction and whose magnetic Field lines 8 here in the same way as in the figure 1 depending on the direction of the cutting magnetic field lines 8 allow a relative position determination between the magnet 7 and the sensor 5.
- FIG. 3 shows an exemplary embodiment of a magnetic field sensor arrangement according to the invention, for example for the detection of pedal travel in a vehicle brake system, in which a sensor housing 10 accommodates a magnetic-field-sensitive sensor corresponding to the sensor 5 according to the previously described figures.
- the magnetic circuit here has two ring magnets 11 and 12, which are rotatably movable on a rotational axis 13 and along the axis of rotation 13 linearly.
- FIG. 4 shows, as a more detailed exemplary embodiment, the ring magnet 11 (or corresponding to FIG. 12), which is magnetized here in the preferred direction 14 at an angle, for example at 45 ° to the rotation axis 13 according to FIG.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- 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)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910055104 DE102009055104A1 (de) | 2009-12-21 | 2009-12-21 | Magnetfeldsensoranordnung zur Wegerfassung an beweglichen Bauteilen |
PCT/EP2010/065925 WO2011085833A2 (fr) | 2009-12-21 | 2010-10-22 | Agencement de capteurs de champ magnétique pour la détermination des courses de composants mobiles |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2516967A2 true EP2516967A2 (fr) | 2012-10-31 |
Family
ID=44149001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10768240A Withdrawn EP2516967A2 (fr) | 2009-12-21 | 2010-10-22 | Agencement de capteurs de champ magnétique pour la détermination des courses de composants mobiles |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2516967A2 (fr) |
JP (1) | JP5606550B2 (fr) |
CN (2) | CN105509775B (fr) |
DE (1) | DE102009055104A1 (fr) |
WO (1) | WO2011085833A2 (fr) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009055104A1 (de) * | 2009-12-21 | 2011-06-22 | Robert Bosch GmbH, 70469 | Magnetfeldsensoranordnung zur Wegerfassung an beweglichen Bauteilen |
US9448087B2 (en) * | 2011-10-10 | 2016-09-20 | Methode Electronics, Inc. | Contactless magnetic linear position sensor |
DE102012214916A1 (de) | 2012-08-22 | 2014-03-20 | Robert Bosch Gmbh | Sensoranordnung zur Erfassung von Drehwinkeln an einem drehbewegten Bauteil |
DE102012220139A1 (de) | 2012-11-06 | 2014-05-08 | Robert Bosch Gmbh | Magnetische Messanordnung und korrespondierende Sensoranordnung zur Bewegungserfassung eines bewegten Bauteils |
KR101801536B1 (ko) * | 2013-05-13 | 2017-11-27 | 주식회사 만도 | 페달 스트로크 센서의 설치구조 |
JP5946796B2 (ja) * | 2013-05-29 | 2016-07-06 | ファナック株式会社 | 回転機械の回転を検出する回転検出器、および回転検出器を備えるシステム |
CN104667427B (zh) * | 2013-11-29 | 2019-02-01 | 上海联影医疗科技有限公司 | 多叶光栅的叶片位置监测装置、多叶光栅、放疗设备 |
DE102014205566A1 (de) | 2014-03-26 | 2015-10-01 | Robert Bosch Gmbh | Sensoranordnung zur Wegerfassung an einem bewegten Bauteil |
CN105526852B (zh) * | 2014-09-30 | 2019-07-12 | 泰科电子(上海)有限公司 | 空挡倒挡位置感测传感器和系统 |
CN105270559A (zh) * | 2014-10-22 | 2016-01-27 | 天津比沃科技有限公司 | 电动自行车变速机构的检测机构及电动自行车的变速方法 |
DE102014116115A1 (de) | 2014-11-05 | 2016-05-12 | Pierburg Gmbh | Magnet-basiertes Messsystem zur Erfassung einer Bewegung und/oder Winkelposition eines Bauelements |
DE102015205390A1 (de) | 2015-03-25 | 2016-09-29 | Robert Bosch Gmbh | Sensoranordnung zur Drehzahlerfassung eines rotierenden Bauteils |
CN105852872B (zh) | 2016-03-25 | 2019-09-20 | 京东方科技集团股份有限公司 | 一种应用于关节处的传感器装置及假肢系统 |
CN107966982B (zh) * | 2016-10-18 | 2021-02-09 | 苏州宝时得电动工具有限公司 | 碰撞触发装置以及割草机 |
DE102017222676A1 (de) * | 2016-12-29 | 2018-07-05 | Robert Bosch Gmbh | Wegsensor |
DE102017202365A1 (de) | 2017-02-15 | 2018-08-16 | Robert Bosch Gmbh | Sensoreinrichtung |
DE102017206025A1 (de) * | 2017-04-07 | 2018-10-11 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Magnetische Anordnung zur Erfassung von Relativbewegungen oder Relativpositionen |
EP3428582B1 (fr) * | 2017-07-11 | 2020-03-04 | Sick Ag | Capteur |
DE102017222063A1 (de) * | 2017-12-06 | 2019-06-06 | Dr. Johannes Heidenhain Gmbh | Induktive Positionsmesseinrichtung |
DE102018220639A1 (de) * | 2018-11-29 | 2020-06-04 | TE Connectivity Sensors Germany GmbH | Vorrichtung zur Messung einer Position eines entlang einer Bewegungsrichtung linear beweglichen Objekts, insbesondere Bremspedalsensor |
DE102019112572A1 (de) * | 2019-05-14 | 2020-11-19 | HELLA GmbH & Co. KGaA | Vorrichtung und Verfahren zur kontaktlosen Bestimmung einer Position eines Pedals |
CN111163372A (zh) * | 2019-12-28 | 2020-05-15 | Oppo广东移动通信有限公司 | 网络设备 |
CN113587793B (zh) * | 2020-04-30 | 2023-11-07 | 财团法人金属工业研究发展中心 | 扣件成型机的测量系统 |
CN112880539A (zh) * | 2021-01-19 | 2021-06-01 | 天津中科华誉科技有限公司 | 一种非接触式位置检测装置 |
JP7444143B2 (ja) * | 2021-07-20 | 2024-03-06 | Tdk株式会社 | 磁気センサ装置 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06258006A (ja) * | 1993-03-02 | 1994-09-16 | Seiko Epson Corp | 変位センサ |
US6559638B1 (en) * | 1998-06-22 | 2003-05-06 | Koninklijke Philips Electronics N.V. | Magnetic positioning detector using field direction as primary detecting means |
DE19849613A1 (de) * | 1998-10-28 | 2000-05-04 | Philips Corp Intellectual Pty | Anordnung zur Messung einer relativen linearen Position |
DE19937206C2 (de) | 1999-06-11 | 2003-05-08 | Siemens Ag | Positionsbestimmungseinrichtung sowie Verwendung einer Positionsbestimmungseinrichtung und Verfahren zum Herstellen eines Maßstabes für eine solche Einrichtung |
EP1074818A3 (fr) * | 1999-08-06 | 2001-10-31 | Siemens Aktiengesellschaft | Capteur de position |
JP2001280908A (ja) * | 2000-03-29 | 2001-10-10 | Sony Precision Technology Inc | 位置検出装置 |
US6577123B2 (en) * | 2001-06-04 | 2003-06-10 | Delphi Technologies, Inc. | Linear position sensor assembly |
WO2004074853A2 (fr) * | 2003-02-14 | 2004-09-02 | Bei Sensors And Systems Company, Inc. | Capteur de position mettant en oeuvre un capteur a effet hall lineaire |
DE102004063539A1 (de) * | 2004-03-11 | 2005-09-29 | Robert Bosch Gmbh | Magnetsensoranordnung |
DE102004011809A1 (de) * | 2004-03-11 | 2005-09-29 | Robert Bosch Gmbh | Magnetsensoranordnung |
DE102004057909A1 (de) * | 2004-11-30 | 2006-06-01 | Bourns, Inc., Riverside | Linearer Positionssensor |
US8299782B2 (en) * | 2005-04-19 | 2012-10-30 | Panasonic Corporation | Position sensor, optical head device, head moving mechanism, information recording and reproduction device and position control system |
JP4787601B2 (ja) * | 2005-11-08 | 2011-10-05 | 株式会社東海理化電機製作所 | 位置検出装置 |
FR2894023B1 (fr) * | 2005-11-29 | 2008-02-22 | Electricfil Automotive Soc Par | Capteur magnetique de position pour un mobile ayant une course lineaire limitee |
JP4831813B2 (ja) * | 2006-01-30 | 2011-12-07 | 株式会社村上開明堂 | 位置検出装置および自動車用ミラーの鏡面角度検出装置 |
DE112007003357A5 (de) * | 2006-12-21 | 2009-12-03 | Micro-Epsilon Messtechnik Gmbh & Co. Kg | Verfahren und Sensoranordnung zum Bestimmen der Position und/oder Positionsänderung eines Messobjekts relativ zu einem Sensor |
DE102009055104A1 (de) * | 2009-12-21 | 2011-06-22 | Robert Bosch GmbH, 70469 | Magnetfeldsensoranordnung zur Wegerfassung an beweglichen Bauteilen |
-
2009
- 2009-12-21 DE DE200910055104 patent/DE102009055104A1/de not_active Ceased
-
2010
- 2010-10-22 CN CN201510867247.8A patent/CN105509775B/zh not_active Expired - Fee Related
- 2010-10-22 WO PCT/EP2010/065925 patent/WO2011085833A2/fr active Application Filing
- 2010-10-22 EP EP10768240A patent/EP2516967A2/fr not_active Withdrawn
- 2010-10-22 JP JP2012543543A patent/JP5606550B2/ja not_active Expired - Fee Related
- 2010-10-22 CN CN201080058122.6A patent/CN102686980B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2011085833A2 * |
Also Published As
Publication number | Publication date |
---|---|
CN102686980A (zh) | 2012-09-19 |
CN102686980B (zh) | 2016-06-15 |
WO2011085833A3 (fr) | 2011-09-15 |
WO2011085833A2 (fr) | 2011-07-21 |
JP5606550B2 (ja) | 2014-10-15 |
CN105509775B (zh) | 2018-06-12 |
DE102009055104A1 (de) | 2011-06-22 |
JP2013515234A (ja) | 2013-05-02 |
CN105509775A (zh) | 2016-04-20 |
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