DE3443522A1 - Arrangement for detecting speeds of revolution - Google Patents

Arrangement for detecting speeds of revolution

Info

Publication number
DE3443522A1
DE3443522A1 DE19843443522 DE3443522A DE3443522A1 DE 3443522 A1 DE3443522 A1 DE 3443522A1 DE 19843443522 DE19843443522 DE 19843443522 DE 3443522 A DE3443522 A DE 3443522A DE 3443522 A1 DE3443522 A1 DE 3443522A1
Authority
DE
Germany
Prior art keywords
sensor wheel
arrangement according
arrangement
conductive body
magnetically conductive
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.)
Ceased
Application number
DE19843443522
Other languages
German (de)
Inventor
Gunter 6270 Idstein Buschmann
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.)
Continental Teves AG and Co oHG
Original Assignee
Alfred Teves GmbH
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 Alfred Teves GmbH filed Critical Alfred Teves GmbH
Priority to DE19843443522 priority Critical patent/DE3443522A1/en
Priority to JP26517185A priority patent/JPS61137070A/en
Publication of DE3443522A1 publication Critical patent/DE3443522A1/en
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/171—Detecting parameters used in the regulation; Measuring values used in the regulation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/04—Special adaptations of driving means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/488—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by variable reluctance detectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

The invention is based on an arrangement for detecting speeds of revolution of a rotating component, in particular a sensor wheel (1) of a motor vehicle equipped with a brake slip control system. In the said invention, the sensor wheel (1) has regions of increased magnetic conductivity, and a measured value sensor (4) is provided for detecting the magnetic conductivity. In order to improve such an arrangement, there is provision for the sensor wheel (1) to be produced from magnetically non-conductive material in which magnetically conductive elements (3) are mounted. <IMAGE>

Description

Anordnung zur DrehzahlerfassungArrangement for speed measurement

Die Erfindung betrifft eine Anordnung zur Drehzahlerfassung eines rotierenden Bauteils, insbesondere eines Sensorrades eines mit einer Bremsschlupfregelanlage ausgerüsteten Kraftfahrzeuges, bei der das Sensorrad über Bereiche erhöhter magnetischer Leitfähigkeit verfügt und bei der zur Erfassung der magnetischen Leitfähigkeit ein Meßwertaufnehmer vorgesehen ist.The invention relates to an arrangement for detecting the speed of a rotating component, in particular a sensor wheel with a brake slip control system equipped motor vehicle, in which the sensor wheel over areas of increased magnetic Conductivity has and in the case of the detection of the magnetic conductivity one Transducer is provided.

In Antiblockiersystemen bei Kraftfahrzeugen ist es generell üblich, das Drehverhalten des zu überwachenden Rades derart zu erfassen, daß dem sich drehenden Rad ein sogenanntes Sensorrad zugeordnet wird, das starr mit dem sich drehenden Rad verbunden ist. In der Regel bestehen derartige Sensorräder aus mit einer Außenverzahnung versehenen Metallscheiben die mit der Drehzahl des zu überwachenden Fahrzeugrades umlaufen. Ferner ist es Stand der Technik, gegenüber der Verzahnung des Sensorrades einen Meßwertaufnehmer anzuordnen, der beispielsweise induktiv arbeitet und über Polschule verfügt, wobei die periodische Veränderung des Magnetfeldes in einer mit den Polschuhen verbundenen Magnetspule entsprechende Strom- und Spannungsänderungen hervorruft.In anti-lock braking systems in motor vehicles, it is generally common to to detect the rotational behavior of the monitored wheel in such a way that the rotating A so-called sensor wheel is assigned to the wheel, which is rigidly connected to the rotating one Wheel is connected. As a rule, such sensor wheels consist of external teeth provided metal disks with the speed of the vehicle wheel to be monitored circulate. Furthermore, it is state of the art, compared to the toothing of the sensor wheel to arrange a transducer that works, for example, inductively and over Polschule disposes, whereby the periodic change of the magnetic field in one with current and voltage changes corresponding to the magnet coil connected to the pole pieces evokes.

Es sind ferner Anordnungen der eingangs genannten Gattung bekannt, bei denen ein mit regelmäßigen Erhebungen versehenes Band auf ein Sensorrad aufgeschrumpft wird. Beide Anordnungen haben jedoch den Nachteil, daß sie korrosionsanfällig sind und einem gewissen Verschleiß unterlegen sind. Außerdem besteht die Gefahr einer Beschädigung des Sensorrades, und das Gewicht ist relativ hoch.There are also arrangements of the type mentioned are known, in which a band provided with regular elevations is shrunk onto a sensor wheel will. However, both arrangements have the disadvantage that they are susceptible to corrosion and a certain amount of wear and tear are inferior. In addition, there is the risk of damaging the sensor wheel, and the weight is relatively high.

Die vorliegende Erfindung hat es sich daher zur Aufgabe gemacht, eine Anordnung der eingangs genannten Gattung derart weiterzubilden, daß Korrosionsschäden und Beschädigungen mechanischer Art weitestgehend ausgeschlossen sind und der Verschleiß minimiert ist. Außerdem soll das Sensorrad ein möglichst geringes Gewicht aufweisen.The present invention has therefore set itself the task of providing a Further develop the arrangement of the aforementioned type in such a way that corrosion damage and damage of a mechanical nature is largely excluded and wear and tear is minimized. In addition, the sensor wheel should have the lowest possible weight.

Erfindungsgemäß ist diese Aufgabe dadurch gelöst, daß das Sensorrad aus einem magnetisch nicht leitfähigem Material besteht, in dem magnetisch leitfähige Körper untergebracht sind. Eine vorteilhafte Ausgestaltung des Anmeldungsgegenstandes sieht vor, daß das die magnetisch leitfähigen Körper aufnehmende Sensorrad aus Kunststoff gefertigt ist, wobei vorzugsweise ein Kunststoff ausgewählt ist, der über ein geringes spezifisches Gewicht verfügt. Eine vorteilhafte Weiterbildung des Anmeldungsgegenstandes sieht vor, daß die magnetisch leitfähigen Körper vom Material des Sensorrades ummantelt sind. Dadurch sind insbesondere Korrosionsschäden ausgeschlossen.According to the invention this object is achieved in that the sensor wheel consists of a magnetically non-conductive material in which magnetically conductive Bodies are housed. An advantageous embodiment of the subject of the application provides that the magnetically conductive body receiving the sensor wheel made of plastic is made, a plastic is preferably selected that has a low specific weight. An advantageous further development of the subject of the application provides that the magnetically conductive body encased by the material of the sensor wheel are. In particular, this prevents corrosion damage.

Im Hinblick auf eine entsprechende Signalverarbeitung durch eine Schlupfüberwachungselektronik ist es vorteilhaft, wenn die magnetisch leitfähigen Körper regelmäßig am Umfang des Sensorrades verteilt sind.With regard to a corresponding signal processing by a slip monitoring electronics it is advantageous if the magnetically conductive body regularly on the circumference of the sensor wheel are distributed.

Vorzugsweise ist das Sensorrad im wesentlichen kreisscheibenförmig ausgebildet, so daß eine Montage an dem hinsichtlich des Drehverhaltens zu überwachenden Rad in einfacher Weise erfolgen kann. Als magnetisch leitfähige Körper sind beispielsweise zylindrische Drähte eingesetzt.The sensor wheel is preferably essentially circular disk-shaped designed so that an assembly on the to be monitored with regard to the rotational behavior Wheel can be done in a simple manner. As a magnetically conductive body are for example cylindrical wires inserted.

Dabei sind die Drähte vorzugsweise derart im Sensorrad angeordnet, daß die Achsen der Drähte parallel zur Achse des Sensorrades-verlaufen. Eine derartige Ausgestaltung ermöglicht es darüber hinaus, eine Vielzahl von Sensorrädern als Strang vorzufertigen und in der Fertigung auf die gewünschte Scheibendicke abzuschneiden. Das die Drähte bzw. die magnetisch leitfähigen Körper aufnehmende Sensorrad sollte aus hitzebeständigem Kunststoff gefertigt sein.The wires are preferably arranged in the sensor wheel in such a way that that the axes of the wires are parallel to the axis of the sensor wheel. Such a one Design also makes it possible to use a large number of sensor wheels as a strand prefabricated and cut to the desired slice thickness during production. The sensor wheel receiving the wires or the magnetically conductive body should be made of heat-resistant plastic.

Ein Ausführungsbeispiel der Erfindung ist nachfolgend anhand der Zeichnung näher erläutert.An exemplary embodiment of the invention is shown below with reference to the drawing explained in more detail.

In der Zeichnung ist mit 1 ein Sensorrad bezeichnet, das um eine Drehachse 2 drehbar ist. Das Sensorrad 1 ist kreisscheibenförmig ausgebildet und nimmt am Außenumfang eine Vielzahl von im wesentlichen zylindrischen Drähten 3 auf, die eine höhere magnetische Leitfähigkeit als das Material des Sensorrades besitzen.In the drawing, 1 denotes a sensor wheel that rotates about an axis of rotation 2 is rotatable. The sensor wheel 1 is designed in the shape of a circular disk and takes on Outer circumference a plurality of substantially cylindrical wires 3, the one have higher magnetic conductivity than the material of the sensor wheel.

Gegenüber der außeren Mantelfläche des Sensorrades 1 ist ein Meßwertaufnehmer 4 angeordnet, der ortsfest gelagert ist und über eine aus der Darstellung nicht ersichtliche, elektromagnetische Spule verfügt, von der zwei Polschuhe 5,6 direkt zum Außenumfang des Sensorrades führen.Opposite the outer surface of the sensor wheel 1 is a transducer 4 arranged, which is mounted in a stationary manner and does not have one from the illustration visible, electromagnetic coil, of which two pole pieces 5,6 directly lead to the outer circumference of the sensor wheel.

Sobald das Sensorrad 1 in Drehung versetzt wird, ergeben sich Magnetfeldänderungen in der mit den Polschuhen 5,6 verbundenen Spule, so daß am Ausgang 7 des Meßwertaufnehmers 4 eine sich periodisch verändernde Spannung entsteht, wobei die Änderungen der Spannung der Drehzahl des Sensorrades 1 proportional sind.As soon as the sensor wheel 1 is set in rotation, changes in the magnetic field occur in the coil connected to the pole pieces 5, 6, so that at the output 7 of the transducer 4 a periodically changing voltage arises, with the changes in voltage the speed of the sensor wheel 1 are proportional.

Claims (8)

Patentansprüche 1. Anordnung zur Drehzahlerfassung eines rotierenden Bauteils, insbesondere eines Sensorrades eines mit einer Bremsschlupfregelanlage ausgerüsteten Kraftfahrzeuges, bei der das Sensorrad über Bereiche erhöhter magnetischer Leitfähigkeit verfügt und bei der zur Erfassung der magnetischen Leitfähigkeit ein Meßwertaufnehmer vorgesehen ist, dadurch g e k e n n -z e i c h n e t, daß das Sensorrad (1) aus einem magnetisch nicht leitfähigem Material besteht, in dem magnetisch leitfähige Körper (3) untergebracht sind.Claims 1. Arrangement for detecting the speed of a rotating Component, in particular a sensor wheel with a brake slip control system equipped motor vehicle, in which the sensor wheel over areas of increased magnetic Conductivity has and in the case of the detection of the magnetic conductivity one A transducer is provided, thereby g e k e n n n -z e i c h n e t that the sensor wheel (1) consists of a magnetically non-conductive material in which magnetically conductive Body (3) are housed. 2. Anordnung nach Anspruch 1, dadurch g e k e n n -z e i c h n e t, daß das die magnetisch leitfähigen Körper (3) aufnehmende Sensorrad aus Kunststoff gefertigt ist.2. Arrangement according to claim 1, characterized in that g e k e n n -z e i c h n e t, that the magnetically conductive body (3) receiving the sensor wheel made of plastic is made. 3. Anordnung nach Anspruch 2, dadurch g e k e n n -z e i c h n e t, daß die magnetisch leitfähigen Körper (3) vom Material des Sensorrades (1) ummantelt sind.3. Arrangement according to claim 2, characterized in that g e k e n n -z e i c h n e t, that the magnetically conductive body (3) encased by the material of the sensor wheel (1) are. 4. Anordnung nach einem oder mehreren der vorausgehenden Ansprüche, dadurch g e k e n n z e i c h n e t, daß die magnetisch leitfähigen Körper (3) regelmäßig am Umfang des Sensorrades (1) verteilt sind.4. Arrangement according to one or more of the preceding claims, in that the magnetically conductive body (3) is regular are distributed on the circumference of the sensor wheel (1). 5. Anordnung nach einem oder mehreren der vorausgehenden Ansprüche, dadurch g e k e n n z e i c h n e t, daß das Sensorrad (1) im wesentlichen kreisscheibenförmig ausgebildet ist.5. Arrangement according to one or more of the preceding claims, in that the sensor wheel (1) is essentially in the shape of a circular disk is trained. 6. Anordnung nach Anspruch 5, dadurch g e k e n n -z e i c h n e t, daß als magnetisch leitfähige Körper im wesentlichen zylindrische Drähte eingesetzt sind.6. Arrangement according to claim 5, characterized in that g e k e n n -z e i c h n e t, that used as a magnetically conductive body essentially cylindrical wires are. 7. Anordnung nach Anspruch 6, dadurch g e k e n n -z e i c h n e t, daß die Drähte parallel zur Achse des Sensorrades (1) angeordnet sind.7. Arrangement according to claim 6, characterized in that g e k e n n -z e i c h n e t, that the wires are arranged parallel to the axis of the sensor wheel (1). 8. Anordnung nach einem oder mehreren der vorausgehenden Ansprüche, dadurch g e k e n n z e i c h n e t, daß das die Drähte (3) aufnehmende Sensorrades (1) aus hitzebeständigem Kunststoff gefertigt ist.8. Arrangement according to one or more of the preceding claims, characterized in that the sensor wheel which receives the wires (3) (1) is made of heat-resistant plastic.
DE19843443522 1984-11-29 1984-11-29 Arrangement for detecting speeds of revolution Ceased DE3443522A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19843443522 DE3443522A1 (en) 1984-11-29 1984-11-29 Arrangement for detecting speeds of revolution
JP26517185A JPS61137070A (en) 1984-11-29 1985-11-27 Monitor device for turnover rate of rotary wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843443522 DE3443522A1 (en) 1984-11-29 1984-11-29 Arrangement for detecting speeds of revolution

Publications (1)

Publication Number Publication Date
DE3443522A1 true DE3443522A1 (en) 1986-06-05

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ID=6251468

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843443522 Ceased DE3443522A1 (en) 1984-11-29 1984-11-29 Arrangement for detecting speeds of revolution

Country Status (2)

Country Link
JP (1) JPS61137070A (en)
DE (1) DE3443522A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993007498A1 (en) * 1991-10-11 1993-04-15 Ina Wälzlager Schaeffler Kg Pulse wheel for a device designed to measure rotational speed
DE4239170A1 (en) * 1992-11-21 1994-05-26 Daimler Benz Ag Signal pick-up for contactless measurement of speed of rotor - is imposed on periphery of cylindrical rotor by resistance welding of flattened paraxial sections of wire within range of stationary sensor
WO1995019900A1 (en) * 1994-01-19 1995-07-27 Federal-Mogul Corporation Speed sensor ring for vehicle anti-lock brake system
DE102009053916A1 (en) * 2009-11-19 2011-05-26 GM Global Technology Operations LLC, ( n. d. Ges. d. Staates Delaware ), Detroit Rotational speed measuring device for motor vehicle, has sensor disk including disk element that is made of plastic in injection molding process, and signaling elements arranged on outer peripheral surface of disk element

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1927237A1 (en) * 1969-05-29 1970-12-03 Teves Gmbh Alfred Sensor for anti-lock braking systems, especially for motor vehicle wheels
DE7320814U (en) * 1973-06-04 1973-08-30 Vdo Schindling A Gmbh Speed sensor
DE2226836A1 (en) * 1972-06-02 1973-12-20 Gerold Szonn FULLY ELECTRONIC SPEED METER FOR ALL LAND VEHICLES

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1927237A1 (en) * 1969-05-29 1970-12-03 Teves Gmbh Alfred Sensor for anti-lock braking systems, especially for motor vehicle wheels
DE2226836A1 (en) * 1972-06-02 1973-12-20 Gerold Szonn FULLY ELECTRONIC SPEED METER FOR ALL LAND VEHICLES
DE7320814U (en) * 1973-06-04 1973-08-30 Vdo Schindling A Gmbh Speed sensor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Machine Design, April 26, 1979, S. 154-158 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993007498A1 (en) * 1991-10-11 1993-04-15 Ina Wälzlager Schaeffler Kg Pulse wheel for a device designed to measure rotational speed
DE4239170A1 (en) * 1992-11-21 1994-05-26 Daimler Benz Ag Signal pick-up for contactless measurement of speed of rotor - is imposed on periphery of cylindrical rotor by resistance welding of flattened paraxial sections of wire within range of stationary sensor
WO1995019900A1 (en) * 1994-01-19 1995-07-27 Federal-Mogul Corporation Speed sensor ring for vehicle anti-lock brake system
US5476272A (en) * 1994-01-19 1995-12-19 Federal-Mogul Corporation Speed sensor ring for vehicle anti-lock brake system
DE102009053916A1 (en) * 2009-11-19 2011-05-26 GM Global Technology Operations LLC, ( n. d. Ges. d. Staates Delaware ), Detroit Rotational speed measuring device for motor vehicle, has sensor disk including disk element that is made of plastic in injection molding process, and signaling elements arranged on outer peripheral surface of disk element

Also Published As

Publication number Publication date
JPS61137070A (en) 1986-06-24

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