DE10139994B4 - Device for detecting the angle of rotation - Google Patents
Device for detecting the angle of rotation Download PDFInfo
- Publication number
- DE10139994B4 DE10139994B4 DE10139994A DE10139994A DE10139994B4 DE 10139994 B4 DE10139994 B4 DE 10139994B4 DE 10139994 A DE10139994 A DE 10139994A DE 10139994 A DE10139994 A DE 10139994A DE 10139994 B4 DE10139994 B4 DE 10139994B4
- Authority
- DE
- Germany
- Prior art keywords
- permanent magnet
- sensors
- angle
- magnetic field
- field sensors
- 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 - Fee Related
Links
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
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/45—Sensors specially adapted for EGR systems
- F02M26/48—EGR valve position sensors
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
- F02D2009/0201—Arrangements; Control features; Details thereof
- F02D2009/0294—Throttle control device with provisions for actuating electric or electronic sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
Abstract
Vorrichtung zur Drehwinkelerfassung, insbesondere für Drossel- und Abgasklappen, mit
einer Schwenkachse (14), deren Schwenkwinkel erfasst werden soll,
einer mit der Schwenkachse (14) verbundenen Antriebseinrichtung (28) zum Schwenken der Schwenkachse (14),
einem in einem Abstand zur Schwenkachse (14) auf einer Kreislinie (26) angeordneten Dauermagnet (24), und zwei benachbart zu dem Dauermagneten (24) angeordneten Magnetfeldsensoren (32, 34),
wobei durch Schwenken der Schwenkachse (14) eine Relativbewegung zwischen dem Dauermagneten (24) und den Magnetfeldsensoren (32, 34) erfolgt, so dass die Magnetfeldsensoren (32, 34) ein winkelabhängiges Signal erzeugen,
dadurch gekennzeichnet,
dass ein Sensor (34) auf einer Innenseite (38) und der andere Sensor (32) auf einer Außenseite (40) des Dauermagneten (24) angeordnet ist.Device for detecting the angle of rotation, in particular for throttle and exhaust flaps, with
a swivel axis (14), the swivel angle of which is to be recorded,
a drive device (28) connected to the pivot axis (14) for pivoting the pivot axis (14),
one permanent magnet (24) arranged at a distance from the pivot axis (14) on a circular line (26), and two magnetic field sensors (32, 34) arranged adjacent to the permanent magnet (24),
wherein the pivoting axis (14) causes a relative movement between the permanent magnet (24) and the magnetic field sensors (32, 34) so that the magnetic field sensors (32, 34) generate an angle-dependent signal,
characterized,
that one sensor (34) is arranged on an inside (38) and the other sensor (32) on an outside (40) of the permanent magnet (24).
Description
Die Erfindung betrifft eine Vorrichtung zur Drehwinkelerfassung, insbesondere zur Drehwinkelerfassung von Drosselklappen oder Abgasklappen in Abgasrückführsystemen.The invention relates to a device for detecting the angle of rotation, in particular for detecting the angle of rotation of Throttle valves or exhaust flaps in exhaust gas recirculation systems.
Eine Vorrichtung zur Bestimmung des
Drehwinkels, d.h. des Öffnungswinkels,
einer Drosselklappe ist in
Aufgabe der Erfindung ist es, eine Vorrichtung zur Drehwinkelerfassung, insbesondere für Drossel- und Abgasklappen, mit geringem Platzbedarf zu schaffen.The object of the invention is a Device for detecting the angle of rotation, in particular for throttle and exhaust flaps to create with little space.
Die Lösung der Aufgabe erfolgt erfindungsgemäß durch die Merkmale des Anspruchs 1.According to the invention, the object is achieved by the features of claim 1.
Die erfindungsgemäße Vorrichtung zur Drehwinkelerfassung, die insbesondere für Drossel- und Abgasklappen bei Kraftfahrzeugen geeignet ist, weist eine Schwenkachse auf, deren Winkel erfasst werden soll. Mit der Schwenkachse ist eine Antriebseinrichtung, wie ein Elektromotor, zum Schwenken der Schwenkachse verbunden. Ferner ist im Abstand zur Schwenkachse auf einer Kreislinie ein Dauermagnet angeordnet. Benachbart zu dem Dauermagneten sind zwei Magnetfeldsensoren angeordnet. Die Bestimmung des Schwenkwinkels der Schwenkachse erfolgt aufgrund der Relativbewegung zwischen dem Dauermagneten und den Magnetfeldsensoren, die herbei ein winkelabhängiges Signal erzeugen. Erfindungsgemäß ist einer der Sensoren auf einer Innenseite und der andere Sensor auf einer Außenseite des Dauermagneten angeordnet. Durch die Anordnung eines der beiden Sensoren innerhalb des Dauermagneten ist der Raumbedarf für die Drehwinkelerfassung reduziert. Bei den Sensoren handelt es sich vorzugsweise um berührungslose Sensoren, beispielsweise Hall-Sensoren.The device according to the invention for detecting the angle of rotation, which especially for Throttle and exhaust flaps are suitable in motor vehicles, has one Pivot axis whose angle is to be recorded. With the swivel axis is a drive device, such as an electric motor, for pivoting connected to the pivot axis. It is also at a distance from the pivot axis a permanent magnet is arranged on a circular line. Adjacent to that Permanent magnets are two magnetic field sensors. The determination the swivel angle of the swivel axis is due to the relative movement between the permanent magnet and the magnetic field sensors that come up an angle dependent Generate signal. According to the invention of the sensors on an inside and the other sensor on one Outside of the Permanent magnets arranged. By arranging one of the two sensors the space required for the rotation angle detection is reduced within the permanent magnet. The sensors are preferably non-contact Sensors, for example Hall sensors.
Auf Grund der Anordnung eines der Sensoren auf der Innenseite des Dauermagneten und des anderen Sensors auf der Außenseite des Dauermagneten ist es möglich, als Dauermagnet anstelle eines geschlossenen Ringmagneten nur ein Ringsegment vorzusehen. Auch bei einem vorzugsweise halbkreisförmigen Ringsegment werden auf Grund der erfindungsgemäßen Anordnung der Sensoren zwei redundante Signale erzeugt. Auch beim Ausfall einer der beiden Sensoren ist somit beispielsweise der Winkel der Drosselklappe sicher erfasst.Due to the arrangement of one of the Sensors on the inside of the permanent magnet and the other sensor on the outside of the permanent magnet it is possible as a permanent magnet instead of a closed ring magnet only one To provide ring segment. Even with a preferably semicircular ring segment are due to the arrangement of the sensors according to the invention generated two redundant signals. Even if one of the two fails The angle of the throttle valve is therefore safe for sensors detected.
Die Anordnung der beiden Sensoren auf gleicher Höhe bzw. einander gegenüberliegend hat ferner den Vorteil, dass insbesondere bei der Verwendung von sehr dünnen Magneten ein Defekt des Magneten einfach erkannt werden kann. Dies liegt daran, dass insbesondere bei sehr dünnen Magneten die beiden Sensoren das gleiche Signal ausgeben. Bei dem Signal handelt es sich üblicherweise um die gemessene Feldspannung. Sobald der Magnet an einer Stelle defekt ist, kann dies von den beiden Sensoren somit sicher festgestellt werden.The arrangement of the two sensors at the same height or opposite each other also has the advantage that, especially when using very thin Magnet a defect of the magnet can be easily recognized. This is due to the fact that the two sensors are particularly useful for very thin magnets output the same signal. The signal is usually around the measured field voltage. Once the magnet is in one place is defective, this can be reliably determined by the two sensors become.
Bei der bekannten Verwendung eines geschlossenen Ringmagneten mit außerhalb des Ringmagneten angeordneten, einander gegenüberliegenden Sensoren ist dies nicht möglich, da eine defekte Stelle in dem Magneten jeweils nur von einem Sensor wahrgenommen wird. Hierbei kann nicht mit Sicherheit entschieden werden, ob der Magnet eine defekte Stelle aufweist, oder ob der Sensor defekt ist.In the known use of a closed ring magnets with outside the ring magnet, opposite each other Sensors this is not possible because a defective point in the magnet is only from one sensor is perceived. This cannot be decided with certainty whether the magnet has a defect or whether the Sensor is defective.
Das erfindungsgemäße Anordnen von zwei einander gegenüberliegenden Sensoren erfüllt somit die Funktion der OBD II (On-board-Diagnose II). Insbesondere ist durch die erfindungsgemäße Anordnung der Sensoren ein Defekt des einen oder des anderen Sensors oder des Magneten gut unterscheidbar. Ferner sind die Kosten der erfindungsgemäßen Vorrichtung geringer.The inventive arrangement of two each other opposite Sensors met thus the function of OBD II (on-board diagnosis II). In particular is by the arrangement according to the invention the sensors are defective in one or the other sensor or of the magnet easily distinguishable. Furthermore, the cost of the device according to the invention lower.
Bei dem verwendeten Magneten handelt
es sich vorzugsweise um einen diametral magnetisierten Magneten.
Vorzugsweise wird ein Magnet verwendet, wie er in der unveröffentlichten
Nachfolgend wird die Erfindung anhand einer bevorzugten Ausführungsform unter Bezugnahme auf die anliegenden Zeichnungen näher erläutert.The invention is explained below a preferred embodiment with reference to the accompanying drawings.
Es zeigen:Show it:
In den
Zur Erfassung des Drehwinkels der
Klappe
Die Antriebseinrichtung
In montiertem Zustand ragt der Magnet
Die beiden Sensoren
Von den beiden Sensoren
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10139994A DE10139994B4 (en) | 2001-08-16 | 2001-08-16 | Device for detecting the angle of rotation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10139994A DE10139994B4 (en) | 2001-08-16 | 2001-08-16 | Device for detecting the angle of rotation |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10139994A1 DE10139994A1 (en) | 2003-03-06 |
DE10139994B4 true DE10139994B4 (en) | 2004-02-19 |
Family
ID=7695477
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10139994A Expired - Fee Related DE10139994B4 (en) | 2001-08-16 | 2001-08-16 | Device for detecting the angle of rotation |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10139994B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011079369A1 (en) | 2011-07-19 | 2013-01-24 | Montaplast Gmbh | Detection system for on-board diagnosis-complaint detection of functioning of flap system in suction tube of engine, has shaft made from steel, which is rotatable to rotational adjustment of flap around longitudinal axis |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2484481B (en) * | 2010-10-12 | 2015-03-04 | Gm Global Tech Operations Inc | EGR valve assembly for internal combustion engines |
JP6367724B2 (en) * | 2015-01-29 | 2018-08-01 | メレキシス テクノロジーズ エス エー | Displacement detector |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4424633A1 (en) * | 1994-07-13 | 1996-01-25 | Bosch Gmbh Robert | Electric position drive, in particular for motor vehicle sunroofs |
DE19903490A1 (en) * | 1999-01-29 | 2000-08-24 | A B Elektronik Gmbh | Rotation sensor for throttle valve flap uses sector magnet and Hall effect sensor and is integrated in throttle housing |
-
2001
- 2001-08-16 DE DE10139994A patent/DE10139994B4/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4424633A1 (en) * | 1994-07-13 | 1996-01-25 | Bosch Gmbh Robert | Electric position drive, in particular for motor vehicle sunroofs |
DE19903490A1 (en) * | 1999-01-29 | 2000-08-24 | A B Elektronik Gmbh | Rotation sensor for throttle valve flap uses sector magnet and Hall effect sensor and is integrated in throttle housing |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011079369A1 (en) | 2011-07-19 | 2013-01-24 | Montaplast Gmbh | Detection system for on-board diagnosis-complaint detection of functioning of flap system in suction tube of engine, has shaft made from steel, which is rotatable to rotational adjustment of flap around longitudinal axis |
DE102011079369B4 (en) * | 2011-07-19 | 2020-09-03 | Montaplast Gmbh | Detection system, angle of rotation stop and method |
Also Published As
Publication number | Publication date |
---|---|
DE10139994A1 (en) | 2003-03-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |