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DE4022837A1 - Signal generator for motor vehicle steering angle - has disc with spiral slot rotating between linear light source and photoelectric receiver - Google Patents

Signal generator for motor vehicle steering angle - has disc with spiral slot rotating between linear light source and photoelectric receiver

Info

Publication number
DE4022837A1
DE4022837A1 DE4022837A DE4022837A DE4022837A1 DE 4022837 A1 DE4022837 A1 DE 4022837A1 DE 4022837 A DE4022837 A DE 4022837A DE 4022837 A DE4022837 A DE 4022837A DE 4022837 A1 DE4022837 A1 DE 4022837A1
Authority
DE
Germany
Prior art keywords
disc
light
slot
light source
steering
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Withdrawn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
DE4022837A
Other languages
German (de)
Inventor
Dirk-W Dipl Ing Morche
Siegfried Teubner
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.)
MORCHE DIRK W DIPL ING
Original Assignee
MORCHE DIRK W DIPL ING
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 MORCHE DIRK W DIPL ING filed Critical MORCHE DIRK W DIPL ING
Priority to DE4022837A priority Critical patent/DE4022837A1/en
Publication of DE4022837A1 publication Critical patent/DE4022837A1/en
Withdrawn legal-status Critical Current

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
    • G01D5/26—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/347—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
    • G01D5/34776—Absolute encoders with analogue or digital scales
    • G01D5/34784—Absolute encoders with analogue or digital scales with only analogue scales or both analogue and incremental scales
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D15/00—Steering not otherwise provided for
    • B62D15/02—Steering position indicators ; Steering position determination; Steering aids
    • B62D15/021—Determination of steering angle
    • B62D15/0215—Determination of steering angle by measuring on the steering column
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D15/00—Steering not otherwise provided for
    • B62D15/02—Steering position indicators ; Steering position determination; Steering aids
    • B62D15/021—Determination of steering angle
    • B62D15/0245—Means or methods for determination of the central position of the steering system, e.g. straight ahead position
    • 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
    • G01D2205/00—Indexing scheme relating to details of means for transferring or converting the output of a sensing member
    • G01D2205/70—Position sensors comprising a moving target with particular shapes, e.g. of soft magnetic targets
    • G01D2205/77—Specific profiles
    • G01D2205/773—Spiral profiles

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)

Abstract

An arrangement for generating an electrical signal according to the steering angle of a motor vehicle contains a drive element driven by the steering wheel and a steering angle sensor with a movable element. A disc (4) driven by the drive element has a spiral slot between the centre and the edge which acts as a rotation position dependent light slot for a linear light source (6) and photoelectric receiver (5) either side of the disc and perpendicular to the rotation axis. The receiver is mounted on a conducting base plate with an electronic preprocessing circuit. USE/ADVANTAGE - Control for differential blucking and all wheel steering. Future accident recorders. Braking and antiskid control system, covers multiple rotations between steering locks and is easy to mount, requiring no setting-up.

Description

Die Erfindung betrifft eine Vorrichtung zur Erzeugung eines elektrischen Signals entsprechend dem Lenkeinschlag eines Kraftfahrzeuges, wobei über das Lenkhandrad ein in die Lenksäule integrierter Lenkwinkelsensor die Lenkhandradumdrehung erfaßt- und in einer nachgeschalteten Elektronik erzeugtes digitales Ausgangssignal liefert.The invention relates to a device for generating an electrical Signals corresponding to the steering angle of a motor vehicle, wherein a steering angle sensor integrated into the steering column via the steering wheel the steering wheel rotation detected and in a downstream electronics generated digital output signal provides.

Vorrichtungen dieser Art werden beispielsweise verwendet:Devices of this type are used, for example:

  • - für Brems- und Antischlupfregelungen,- for braking and anti-slip controls,
  • - für die Steuerung von Differentialsperren und Allradlenkungen,- for the control of differential locks and all-wheel steering,
  • - für zukünftige Unfallschreiber.- for future accident recorders.

Solche Vorrichtungen sind technisch recht aufwendig, da sie:Such devices are technically quite complex because they:

  • - in bestehende Lenksysteme integriert werden müssen,- must be integrated into existing steering systems,
  • - ein Lenkrad mehrere Umdrehungen von Lenkanschlag zu Lenkanschlag durchführen muß (2×360°),- A steering wheel several turns from the steering stop Must perform steering stop (2 × 360 °),
  • - leicht und abgleichfrei montiert werden müssen.- must be installed easily and without adjustment.

Auf dem Markt erhältliche Sensoren/Detektoren, welche entweder als Ab­ solutwinkelgeber (Potentiometer) oder als Inkremental-Winkelgeber (Resolver, Tachogeneratoren) ausgelegt sind, eignen sich wegen der speziellen technischen Anforderungen und der Preisrestriktion für derartige Komponenten in der Automobiltechnik nicht für die aufgezeigten Anwendungsgebiete.Sensors / detectors available on the market, which either as Ab Solute angle encoder (potentiometer) or as an incremental angle encoder (resolver, Tachogenerators) are designed because of the special technical requirements and price restrictions for such components in automotive engineering not for the indicated areas of application.

Aus der Offenlegungsschrift DE 39 08 854 ist ein Lenkwinkelgeber bekannt, welcher folgende Eigenschaften aufweist:
Eine an dem Lenkgetriebe angeflanschte Gewindeverbindung wird proportional zum Lenkradeinschlag in eine Spule ausgefahren und nach dem Tauchkolbenprinzip die Induktivitätsveränderung gemessen.A steering angle transmitter is known from the published patent application DE 39 08 854, which has the following properties:
A threaded connection flanged to the steering gear is extended in proportion to the steering wheel lock into a coil and the change in inductance is measured according to the plunger principle.

Dieses Verfahren hat folgende Nachteile:This method has the following disadvantages:

  • - verwendbar nur bei Zahnstangenlenkungen- Can only be used for rack and pinion steering
  • - aufwendig zu montieren- complex to assemble
  • - nicht abgleichfrei/hohe Temperaturdrift- not free of adjustment / high temperature drift
  • - analoges Ausgangssignal- analog output signal

Aus der Offenlegungsschrift DE 37 03 591 ist ein Lenkwinkelgeber bekannt, bei welchem eine Scheibe mit Öffnungen/Lichtschlitzen abgetastet wird. Die eingehenden Impulse werden von einem Zähler aufaddiert/subtrahiert und von einer CPU ausgewertet.A steering angle transmitter is known from the published patent application DE 37 03 591, in which a pane is scanned with openings / light slots. The incoming pulses are added / subtracted from a counter and evaluated by a CPU.

Dieses Verfahren hat folgende Nachteile:This method has the following disadvantages:

  • - kein absoluter Winkelgeber, dadurch aufwendigere Signalverarbeitung- no absolute angle encoder, therefore more complex signal processing
  • - Datenverlust bei Stromausfall - Data loss in the event of a power failure  
  • - Aufzeichnungsfehler bei Lenkradbewegungen nach Ausschalten der Fahrzeugzündung.- Recording errors in steering wheel movements after switching off the Vehicle ignition.

Durch die Erfindung soll ein Lenkwinkelsensor geschaffen werden, welcher folgende Spezifikationen aufweist:The invention is intended to create a steering angle sensor which has the following specifications:

  • - Absolutwinkelgeber in den Bereichen 2×360°- Absolute angle encoder in the 2 × 360 ° ranges
  • - abgleichfreier Einbau- Installation without adjustment
  • - Einbau in alle PKW/LKW möglich- Installation possible in all cars / trucks
  • - Digitales Ausgangssignal- Digital output signal
  • - Signalausgabe/-verarbeitung durch Seriell-Schnittstelle möglich (Übertragungsrate mind. 19 200 Baud)- Signal output / processing possible via serial interface (Transmission rate at least 19 200 baud)
  • - temperaturunabhängiges Ausgangssignal von -25 bis +80°C- Temperature-independent output signal from -25 to + 80 ° C
  • - Großserienfertigung in SMD möglich- Large series production in SMD possible
  • - verschleißfrei durch Verwendung optoelektronischer Komponenten- Wear-free thanks to the use of optoelectronic components
  • - hohe Stöhrstrahlsicherheit und EMV- high interference radiation safety and EMC
  • - geringer Fertigungspreis- low manufacturing price

Dazu umfaßt erfindungsgemäß der Lenkwinkelsensor eine Grundplatte, welche zugleich auch als Leiterplatte zur Aufnahme der erforderliche elektronischen Bauteile für die Signalvorverarbeitung dient. In diese Grundplatte ist eine Mittelbohrung zur Durchführung einer Drehachse eingebracht. Die Grund-/Leiterplatte ist oberseitig bestückt mit einer fotoelektrischen Zeile aus lichtempfindlichen Bauteilen, beispielsweise einem CCD-Zeilenelement, einem Zeilenfototransistor oder einer Lateralfotodiode. Unterseitig befinden sich die Leiterbahnen und die elektronischen Bauteile zur Signalvorverarbeitung. Über der Grundplatte befindet sich auf der drehbaren (angetriebenen) Mittelachse eine gleichgroße zentrisch fest montierte Scheibe mit einem eingebrachten kurvenförmigen/spiralförmigen Lichtschlitz. Über dieser drehbaren Schlitzscheibe ist in fester und winkelmäßig identischer Position zur lichtempfindlichen Bauteilzeile der Grundplatte eine Lichtleiste in Gestalt eines sogenannten Line-Scource-LED oder einer längsförmigen Lichtquelle mit einem definiertem Lichtaustrittsbereich, welche z. B. extern über einen Glasfaserlichtleiter gespeist wird.For this purpose, according to the invention, the steering angle sensor comprises a base plate, which also serves as a circuit board to accommodate the required electronic components for signal preprocessing. In this base plate is a center hole for performing a Axis of rotation introduced. The base / printed circuit board is equipped with a photoelectric line of photosensitive components, for example a CCD line element, a line photo transistor or a lateral photo diode. The conductor tracks and the electronic components are located on the underside for signal preprocessing. Above the base plate is on the rotatable (driven) Center axis is an equally large, centrally mounted disc with a introduced curved / spiral light slit. Above this rotatable slotted disc is more identical in terms of angle and angle Position a light bar to the light-sensitive component line of the base plate in the form of a so-called line source LED or a longitudinal one Light source with a defined light exit area, which, for. B. is fed externally via a fiber optic cable.

Erfindungsgemäß wird durch die Drehbewegung der Lichtschlitzscheibe, welche über die Drehachse mit der Lenkwelle des Fahrzeugs vorzugsweise im Bereich der Lenkradabdeckung verbunden ist, jederzeit proportional zum Lenkradeinschlag die absolute Position erkannt, da der Multiplexer in der auf der Grundplatte angebrachten Signalvorverarbeitung den entsprechend der Stellung der Lichtschlitzscheibe belichteten Punkt des fotoelektrischen Elementes erfaßt, welcher einer definierten Winkelposition entspricht. According to the invention, the rotary movement of the light slot disc which preferably on the axis of rotation with the steering shaft of the vehicle connected in the area of the steering wheel cover, proportional at all times the absolute position of the steering wheel was detected, since the multiplexer in the signal preprocessing on the base plate the position of the light slot disc exposed point of the photoelectric Element which detects a defined angular position corresponds.  

Um eine Genauigkeit von 1° Lenkwinkelauflösung zu erhalten, ist eine optische Auflösung des Sensors von 10° absolut ausreichend, da das Übersetzungsverhältnis eines Lenkgetriebes etwa 1 : 20 beträgt, was bei einem Fahrzeug einer tatsächlichen Auflösung von 0,5° entspricht.To get an accuracy of 1 ° steering angle resolution, an optical Resolution of the sensor of 10 ° is absolutely sufficient, since the transmission ratio of a steering gear is about 1:20, which is one Vehicle corresponds to an actual resolution of 0.5 °.

Das Ausgangssignal des Sensors wird erfindungsgemäß lediglich noch mit dem Übersetzungsverhältnis des fahrzeugspezifischen Lenkgetriebes verrechnet, um den tatsächlichen Lenkungseinschlagswinkel der Fahrzeugräder zu ermitteln.According to the invention, the output signal of the sensor is only included offsets the gear ratio of the vehicle-specific steering gear, the actual steering angle of the vehicle wheels to determine.

Zur Feststellung des Rechts-/Links-Lenkradeinschlages ist erfindungsgemäß am Rand der Lichtschlitzscheibe ein um 90° nach unten abgewinkelter kleiner Zapfen vorgesehen, welcher einen an dem äußeren Rand der Grundplatte befestigten Micro-Kippschalter beim Durchlauf der 0°/360° Position in Drehrichtung betätigt/umlegt.To determine the right / left steering wheel angle is according to the invention at the edge of the light slot disc angled 90 ° downwards Small pin provided which one on the outer edge of the Base plate attached micro toggle switch during the passage of 0 ° / 360 ° Position activated / reversed in direction of rotation.

Erläuterung der AbbildungenExplanation of the pictures

Abb. 1
 1 Grundplatte
 2 Signalvorverarbeitung mit Multiplexer
 3 Drehbare Mittelachse
 4 Lichtschlitzscheibe/Codescheibe
 5 Fotoelektrisches Zeilenelement/Sensorelement
 6 Zeilenförmige Lichtquelle
 7 Schaltzapfen
 8 Micro-Kippschalter
 9 Gehäuse
10 Kabeldurchführung Fig. 1
1 base plate
2 signal preprocessing with multiplexer
3 Rotatable central axis
4 light slot disc / code disc
5 Photoelectric line element / sensor element
6 line light source
7 switching pins
8 micro toggle switches
9 housing
10 cable entry

Abb. 2
zeigt das Blockschaltbild des Lenkwinkelsensors. Fig. 2
shows the block diagram of the steering angle sensor.

Abb. 3
zeigt den Kurvenverlauf des Lichtschlitzes der Lichtschlitzscheibe. Fig. 3
shows the curve of the light slot of the light slot disk.

Claims (13)

1. Vorrichtung zur Erzeugung eines elektrischen Signals entsprechend dem Lenkeinschlag eines Fahrzeuges mit einem über das Lenkhandrad angetriebenen Antriebselement der Lenksäule und einem Lenkwinkelsensor mit beweglichem Element, dadurch gekennzeichnet, daß sich auf einer über das Antriebselement angetriebenen Mittelachse eine drehbare Scheibe mit einem durchgehenden, den Mittelpunkt und die Außenkante verbindenden spiralförmigen Schlitz befindet, welcher als drehpositionsabhängiger Lichtschlitz für eine über ihm rechtwinkelig zur Drehachse fest angeordneten linienförmige Lichtquelle und einem unter unter ihm rechtwinkelig zur Drehachse fest angeordnetem linienförmigen fotoelektrischen Empfänger dient, welcher mit einer elektronischen Signalvorverarbeitung zusammen auf einer als Leiterplatte ausgelegten Grundplatte montiert ist.1. An apparatus for generating an electrical signal corresponding to the steering angle of a vehicle with a drive element driven by the steering wheel of the steering column and a steering angle sensor with a movable element, characterized in that a rotatable disc with a continuous, the center point on a central axis driven by the drive element and the outer edge connecting spiral slot, which serves as a rotational position-dependent light slot for a linear light source arranged above it at right angles to the axis of rotation and a linear photoelectric receiver below it at right angles to the axis of rotation, which with electronic signal preprocessing together on a base plate designed as a printed circuit board is mounted. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Lichtquelle ein extern oder intern gespeister lichtleitender und optisch definiert in Richtung Lichtschlitzscheibe/Codescheibe lichtausstrahlender Kunststoff ist.2. Device according to claim 1, characterized in that the Light source an externally or internally fed light-guiding and optically defined in the direction of the light slot disc / code disc Is plastic. 3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Lichtquelle ein sogenanntes Line-Source-LED ist.3. Device according to claim 1, characterized in that the Light source is a so-called line source LED. 4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der fotoelektrische Empfänger eine CCD-Zeile, eine Fototransistorzeile oder eine Lateralfotodiode ist.4. The device according to claim 1, characterized in that the photoelectric receiver a CCD line, a photo transistor line or is a lateral photodiode. 5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Lichtquelle und der fotoelektrische Empfänger deckungsgleich übereinander angeordnet sind.5. The device according to claim 1, characterized in that the The light source and the photoelectric receiver overlap are arranged. 6. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Lichtschlitzscheibe/Codescheibe starr mit der angetriebenen Mittelachse verbunden ist.6. The device according to claim 1, characterized in that the Slotted light disk / code disk rigid with the driven central axis connected is. 7. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Lichtquelle, die Lichtschlitzscheibe/Codescheibe und der fotoelektrische Empfänger parallel in unterschiedlichen Ebenen zueinander angeordnet sind.7. The device according to claim 1, characterized in that the Light source, the light slot disc / code disc and the photoelectric Receivers arranged parallel to each other in different levels are. 8. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der räumliche Abstand des fotoelektrischen Empfängers gleich der Breite des Lichtschlitzes der Lichtschlitzscheibe ist.8. The device according to claim 1, characterized in that the spatial distance of the photoelectric receiver is equal to the width of the Is the light slot of the light slot disk. 9. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß jeder punkt der Spiralkurve des Lichtschlitzes der Lichtschlitzscheibe einen anderen Abstand vom Mittelpunkt der Lichtschlitzscheibe aufweist. 9. The device according to claim 1, characterized in that each point of the spiral curve of the light slot of the light slot disk another Distance from the center of the light slot disc.   10. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Lichtschlitzscheibe zentrisch auf der Mittelachse montiert ist.10. The device according to claim 1, characterized in that the Light slot disc is mounted centrally on the central axis. 11. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Sensorsignalvorverarbeitungselektronik auf der Grund-/Leiterplatte einen Multiplexer und einen Schnittstellenwandler umfaßt.11. The device according to claim 1, characterized in that the Sensor signal preprocessing electronics on the base / PCB Multiplexer and an interface converter includes. 12. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Lichtschlitzscheibe/Codescheibe am äußeren Rand einen rechtwinkelig nach unten gerichteten Zapfen aufweist, welcher bei dem Durchgang durch die 0°/360° Position einen elektrischen Kippschalter in Richtung der jeweiligen Drehrichtung betätigt.12. The apparatus according to claim 1, characterized in that the Light slot disc / code disc on the outer edge a right angle has downward-facing pin, which in the passage through the 0 ° / 360 ° position an electrical toggle switch in the direction of actuated in the respective direction of rotation. 13. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Lichtschlitzscheibe/Codescheibe eine Blendenscheibe ist, deren Schlitz- Konturenverlauf der mathematischen Funktion r=k · ϕ entspricht.13. The apparatus according to claim 1, characterized in that the The light slit disc / code disc is an aperture disc, the slit Contour course of the mathematical function r = k · ϕ corresponds.
DE4022837A 1990-07-18 1990-07-18 Signal generator for motor vehicle steering angle - has disc with spiral slot rotating between linear light source and photoelectric receiver Withdrawn DE4022837A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4022837A DE4022837A1 (en) 1990-07-18 1990-07-18 Signal generator for motor vehicle steering angle - has disc with spiral slot rotating between linear light source and photoelectric receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4022837A DE4022837A1 (en) 1990-07-18 1990-07-18 Signal generator for motor vehicle steering angle - has disc with spiral slot rotating between linear light source and photoelectric receiver

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DE4022837A1 true DE4022837A1 (en) 1992-01-23

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DE4228719A1 (en) * 1992-08-28 1994-03-03 Schaeffler Waelzlager Kg Capacitive steering angle sensor for motor vehicle - forms first capacitor group from electronics transmitter electrodes and scale receiver electrodes, and second capacitor group from scale transmitter electrodes and electronics receiver electrodes
DE19506019A1 (en) * 1995-02-22 1996-09-05 Telefunken Microelectron Operating optical steering angle stationary sensor with several optical elements
DE19638911A1 (en) * 1996-09-23 1998-03-26 Teves Gmbh Alfred Rotation angle sensor for motor vehicle
DE19647705A1 (en) * 1996-11-11 1998-05-20 Petri Ag Device for determining the angular position of the steering wheel in a motor vehicle
DE19712869A1 (en) * 1997-03-27 1998-10-01 Itt Mfg Enterprises Inc Steering angle sensor system with increased redundancy
DE19810158A1 (en) * 1998-03-04 1999-09-09 Kostal Leopold Gmbh & Co Kg Steering angle sensor for motor vehicle steering wheel
DE19809585A1 (en) * 1998-03-06 1999-09-16 Kostal Leopold Gmbh & Co Kg Angle sensor for motor vehicle steering wheel
DE19835972C1 (en) * 1998-08-08 2000-01-20 Kostal Leopold Gmbh & Co Kg Opto-electronic position detector for industrial robot or motor vehicle
DE19836666C1 (en) * 1998-08-13 2000-02-17 Kostal Leopold Gmbh & Co Kg Steering angle sensor, e.g. for automobile stability control; has sensor unit for limited angular range and sensor unit for full rotation range positioned on opposite sides of common circuit board
DE19838731A1 (en) * 1998-08-26 2000-03-09 Kostal Leopold Gmbh & Co Kg Steering angle sensor to determine absolute angle setting of motor vehicle steering wheel using 2 sensor units 1 within angle setting from total wheel rotation range with sensor rotor
DE19855064A1 (en) * 1998-11-28 2000-05-31 Kostal Leopold Gmbh & Co Kg Optoelectronic steering angle sensor to determine absolute position of steering wheel of motor vehicle; has common sensor array to detect code tracks for each functional unit
DE19942323A1 (en) * 1999-09-06 2001-03-08 Pwb Ruhlatec Ind Prod Gmbh Multiple detection of optoelectrical signals involves
WO2001020265A1 (en) * 1999-09-14 2001-03-22 Leopold Kostal Gmbh & Co. Kg Optoelectronic angle of rotation sensor
US6248993B1 (en) 1998-08-05 2001-06-19 Leopold Kostal Gmbh & Co. Kg Steering angle sensor
DE10032671A1 (en) * 2000-07-05 2002-01-17 Kostal Leopold Gmbh & Co Kg Power steering system for motor vehicle has parallel plates on steering shaft sections with code tracks and code markings whose images are formed on photosensitive array
WO2002028696A1 (en) 2000-09-30 2002-04-11 Leopold Kostal Gmbh & Co. Kg Method for determining the absolute angular position of the steering wheel of a motor vehicle
EP1202025A2 (en) * 2000-10-23 2002-05-02 Austriamicrosystems AG Angle measuring device
US6552330B2 (en) 1999-09-14 2003-04-22 Leopold Kostal Gmbh & Co. Kg Optoelectronic angle of rotation sensor
EP1363477A2 (en) 2002-05-07 2003-11-19 Leopold Kostal GmbH & Co. KG Electric circuit and method for monitoring the integrity of a Led-array
DE10242169C1 (en) * 2002-09-10 2003-11-20 Kostal Leopold Gmbh & Co Kg Optoelectronic steering angle sensor for automobile steering wheel incorporating compensation for position deviations between code disc and cooperating linear photosensor
US6927704B1 (en) 2004-03-05 2005-08-09 Delphi Technologies, Inc. Fault tolerant optoelectronic position sensor
EP1744129A1 (en) 2005-07-14 2007-01-17 Leopold Kostal GmbH & Co. KG Method for determining the absolute angular position of a steering wheel in a vehicle
DE102005032870A1 (en) * 2005-07-14 2007-01-25 Leopold Kostal Gmbh & Co. Kg Method for determining the absolute angular position of the steering wheel of a motor vehicle
DE102005032869A1 (en) * 2005-07-14 2007-01-25 Leopold Kostal Gmbh & Co. Kg Method for determining the absolute angular position of the steering wheel of a motor vehicle
CN103661098A (en) * 2013-11-28 2014-03-26 湖州立方实业有限公司 Prompting device for returning of steering wheel

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US6501069B2 (en) 1999-09-14 2002-12-31 Leopold Kostal Gmbh & Co. Optoelectronic angle of rotation sensor having a code disk with redundant digital coding
WO2001020265A1 (en) * 1999-09-14 2001-03-22 Leopold Kostal Gmbh & Co. Kg Optoelectronic angle of rotation sensor
US6552330B2 (en) 1999-09-14 2003-04-22 Leopold Kostal Gmbh & Co. Kg Optoelectronic angle of rotation sensor
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DE10032671A1 (en) * 2000-07-05 2002-01-17 Kostal Leopold Gmbh & Co Kg Power steering system for motor vehicle has parallel plates on steering shaft sections with code tracks and code markings whose images are formed on photosensitive array
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WO2002028696A1 (en) 2000-09-30 2002-04-11 Leopold Kostal Gmbh & Co. Kg Method for determining the absolute angular position of the steering wheel of a motor vehicle
EP1202025A2 (en) * 2000-10-23 2002-05-02 Austriamicrosystems AG Angle measuring device
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US6888357B2 (en) 2002-05-07 2005-05-03 Leopold Kostal Gmbh & Co. Kg Electric circuit arrangement and method for checking the intactness of a photodiode array
DE10220306C1 (en) * 2002-05-07 2003-12-11 Kostal Leopold Gmbh & Co Kg Electrical circuit arrangement and method for checking the integrity of a photodiode array
EP1363477A2 (en) 2002-05-07 2003-11-19 Leopold Kostal GmbH & Co. KG Electric circuit and method for monitoring the integrity of a Led-array
DE10242169C1 (en) * 2002-09-10 2003-11-20 Kostal Leopold Gmbh & Co Kg Optoelectronic steering angle sensor for automobile steering wheel incorporating compensation for position deviations between code disc and cooperating linear photosensor
US6927704B1 (en) 2004-03-05 2005-08-09 Delphi Technologies, Inc. Fault tolerant optoelectronic position sensor
DE102005032871A1 (en) * 2005-07-14 2007-01-25 Leopold Kostal Gmbh & Co. Kg Method for determining the absolute angular position of the steering wheel of a motor vehicle
DE102005032869A1 (en) * 2005-07-14 2007-01-25 Leopold Kostal Gmbh & Co. Kg Method for determining the absolute angular position of the steering wheel of a motor vehicle
DE102005032870A1 (en) * 2005-07-14 2007-01-25 Leopold Kostal Gmbh & Co. Kg Method for determining the absolute angular position of the steering wheel of a motor vehicle
US7345597B2 (en) 2005-07-14 2008-03-18 Leopold Kostal Gmbh & Co. Kg Process to determine the absolute angular position of a motor vehicle steering wheel
US7397394B2 (en) 2005-07-14 2008-07-08 Leopold Kostal Gmbh & Co. Kg Process to determine the absolute angular position of a motor vehicle steering wheel
US7417563B2 (en) 2005-07-14 2008-08-26 Leopold Kostal Gmbh & Co. Kg Process to determine the absolute angular position of a motor vehicle steering wheel
EP1744129A1 (en) 2005-07-14 2007-01-17 Leopold Kostal GmbH & Co. KG Method for determining the absolute angular position of a steering wheel in a vehicle
CN103661098A (en) * 2013-11-28 2014-03-26 湖州立方实业有限公司 Prompting device for returning of steering wheel

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