DE19955513B4 - Configurable evaluation circuit for an inductively recorded signal - Google Patents
Configurable evaluation circuit for an inductively recorded signal Download PDFInfo
- Publication number
- DE19955513B4 DE19955513B4 DE19955513A DE19955513A DE19955513B4 DE 19955513 B4 DE19955513 B4 DE 19955513B4 DE 19955513 A DE19955513 A DE 19955513A DE 19955513 A DE19955513 A DE 19955513A DE 19955513 B4 DE19955513 B4 DE 19955513B4
- Authority
- DE
- Germany
- Prior art keywords
- evaluation circuit
- microprocessor
- signal
- serial interface
- evaluation
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0097—Electrical control of supply of combustible mixture or its constituents using means for generating speed signals
-
- 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
- G01D3/02—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for altering or correcting the law of variation
-
- 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
- G01D5/2006—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 by influencing the self-induction of one or more coils
- G01D5/2013—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 by influencing the self-induction of one or more coils by a movable ferromagnetic element, e.g. a core
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1413—Controller structures or design
- F02D2041/1432—Controller structures or design the system including a filter, e.g. a low pass or high pass filter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
- F02D2041/281—Interface circuits between sensors and control unit
- F02D2041/285—Interface circuits between sensors and control unit the sensor having a signal processing unit external to the engine control unit
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Technology Law (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
Auswerteschaltung, welche mit einem einen Geber (1) abtastenden induktiven Signalaufnehmer (4) verbunden ist, das eingehende Signal digitalisiert und mit einem Mikroprozessor (7) zusammenarbeitet, dadurch gekennzeichnet, dass zwischen der Auswerteschaltung (6) und dem Mikroprozessor (7) eine serielle Schnittstelle (6.3, 8, 9) vorgesehen ist, über die die Auswerteschaltung (6) durch den Mikroprozessor (7) programmierbar ist, und dass das digitalisierte Signal über eine separat vorgesehene Datenübertragungsleitung von einem Signalausgang (6.2) der Auswerteschaltung (6) an einen Digitalsignaleingang (11) des Mikroprozessors (7) übertragen wird.Evaluation circuit, which is connected to an encoder (1) scanning inductive Signalaufnehmer (4), the incoming signal digitized and cooperating with a microprocessor (7), characterized in that between the evaluation circuit (6) and the microprocessor (7) has a serial Interface (6.3, 8, 9) is provided, via which the evaluation circuit (6) by the microprocessor (7) is programmable, and that the digitized signal via a separately provided data transmission line from a signal output (6.2) of the evaluation circuit (6) to a Digital signal input (11) of the microprocessor (7) is transmitted.
Description
Technisches Gebiet:Technical area:
Auf induktivem Wege erfaßte Signale, beispielsweise von einem Geberrad ausgesandte Impulse, werden üblicherweise für eine digitale Weiterverarbeitung digitalisiert, wobei dem induktiven Signal störende Signale ausgefiltert werden.Inductively detected signals, for example, pulses emitted by a transmitter wheel, are usually digitized for digital further processing, wherein the inductive signal interfering signals are filtered out.
Stand der Technik:State of the art:
Aus
Der entscheidende Nachteil solcherart beschaffener Schaltungen besteht darin, daß sie ein fest verdrahtetes Schaltschema für einen genau spezifizierten Zweck darstellen und eine Anpassung an künftige, derzeit noch nicht bekannte Anforderungen schwierig zu bewerkstelligen ist.The major disadvantage of such circuits is that they represent a hard-wired circuit diagram for a specific purpose and that it is difficult to adapt to future, currently unknown requirements.
Des weiteren sind aus dem Stand der Technik Auswerteschaltungen für Motorsteuerungen der Typen CJ 920, CJ 911 sowie CY 03 bekannt, die eine Auswerteschaltung für potentialfreie Eingangssignale eines Induktivgebers aufweisen. Fest vorgegebene Beschaltungen enthalten eine Anzahl von Komperatoren, die ebenfalls optimal an eine zu lösende Aufgabenstellung angepaßt sind, dadurch jedoch eine universelle Einsetzbarkeit der Auswerteschaltung für andere Einsatzzwecke erheblich einschränken.Furthermore, evaluation circuits for motor controllers of types CJ 920, CJ 911 and CY 03 are known from the prior art, which have an evaluation circuit for potential-free input signals of a Induktivgebers. Hard-wired circuits contain a number of comparators, which are also optimally adapted to a problem to be solved, but thereby considerably limit a universal applicability of the evaluation circuit for other purposes.
Aus der
Darstellung der Erfindung:Presentation of the invention:
Mittels der vorgeschlagenen Lösung, eine Auswertschaltung mit einem Mikroprozessor über eine serielle Schnittstelle zu verbinden und eine Programmierung bzw. eine Konfiguration der Auswerteschaltung durch den Mikroprozessor zu ermöglichen, läßt sich eine solcherart beschaffene Auswerteschaltung universell einsetzen. Für unterschiedliche Anwendungsfälle ist der Einsatz speziell an den jeweiligen Einsatzzweck angepaßter Auswerteschaltungskonfigurationen, sowie der damit einhergehende Entwicklungsaufwand obsolet. Anpassungen an den jeweiligen Einsatzzweck der Auswerteschaltung erfolgen über Softwareanpassungen, die einfach am Mikroprozessor implementierbar sind und eine Verwendung der erfindungsgemäßen Auswerteschaltung/Mikroprozessor-Einheit erlaubt, welche über eine serielle Schnittstelle untereinander verbunden ist. Neben einer extrem hohen Datenübertragungsgeschwindigkeit gestattet die serielle Schnittstelle eine Anpassung der Auswerteschaltung einer nicht bekannten und schwer vorhersehbare Anforderung über Software.By means of the proposed solution, to connect an evaluation circuit with a microprocessor via a serial interface and to enable programming or configuration of the evaluation by the microprocessor, such an evaluation circuit can be used universally. For different applications, the use of specially adapted to the particular application evaluation circuitry configurations, and the associated development effort is obsolete. Adjustments to the respective intended use of the evaluation circuit via software adjustments that are easy to implement on the microprocessor and allows use of the evaluation circuit according to the invention / microprocessor unit, which is interconnected via a serial interface. In addition to an extremely high data transmission speed, the serial interface allows an adaptation of the evaluation circuit of a not known and difficult to predict via software.
Die serielle Schnittstelle, mit einem bidirektionalen Datenbus versehen, umfaßt Ein/Ausgänge sowohl auf seiten der Auswertschaltung also auch auf Seiten des Mikroprozessors; die bidirektionale Auslegung des seriellen Datenbusses gestattet sowohl einen Datentransfer vom Mikroprozessor – der Recheneinheit – an die zu konfigurierende Auswerteschaltung, als auch einen Datentransfer von der Auswerteschaltung an den Mikroprozessor. Mittels der als serielle Schnittstelle ausgelegten Verbindung zwischen der Auswerteschaltung und dem Mikroprozessor, programmiert sich der Mikroprozessor die jeweils adäquate Auswerteschaltung, die die der Erfüllung der Anforderungen im Einzelfalle jeweils in optimaler Weise entspricht.The serial interface, provided with a bidirectional data bus, includes inputs / outputs both on the side of the evaluation circuit and also on the part of the microprocessor; The bidirectional design of the serial data bus allows both a data transfer from the microprocessor - the arithmetic unit - to the evaluation circuit to be configured, as well as a data transfer from the evaluation circuit to the microprocessor. By means of designed as a serial interface connection between the evaluation circuit and the microprocessor, the microprocessor programs the respective appropriate evaluation circuit, which corresponds to the fulfillment of the requirements in each case in an optimal manner.
Da auf induktivem Wege erhaltene Signale durchweg von Störgrößen überlagert sind, enthält die Auswerteschaltung einen Signalfilter, der das auf induktivem Wege ermittelte Signal überlagernde Störgrößen vor der Umwandlung des induktiv ermittelten Signales in ein digitales Signal ausfiltert. Somit ist sichergestellt, daß ein weitgehend störungsfrei gehaltenes induktiv aufgenommenes Signal digitalisiert wird. Am Ausgang für das digitalisierte Signal an der Auswerteschaltung steht eine separate Signalleitung zur Verfügung, auf der das digitalisierte Signal an den Mikroprozessor übermittelt wird. Das digitale Signal wird nicht auf den bidirektional gerichteten seriellen Datenbus gegeben, sondern via separater Übertragungsleitung an den Mikroprozessor übermittelt. Der bidirektional gerichtete Bus der seriellen Schnittstelle dient der Konfiguration und der Programmierung der Auswerteschaltung durch den Mikroprozessor, die Übertragung des digitalisierten Signales erfolgt hiervon getrennt.Since signals obtained inductively are superimposed by disturbance variables, the evaluation circuit contains a signal filter which filters out the disturbance variables superimposed on the inductive pathway before converting the inductively determined signal into a digital signal. This ensures that a largely interference-free inductively recorded signal is digitized. At the output for the digitized signal at the evaluation circuit is a separate signal line available on the digitized signal the microprocessor is transmitted. The digital signal is not given to the bidirectionally directed serial data bus, but transmitted via a separate transmission line to the microprocessor. The bidirectionally directed bus of the serial interface is used for the configuration and programming of the evaluation circuit by the microprocessor, the transmission of the digitized signal is carried out separately.
Zeichnung:Drawing:
Anhand der Zeichnung wird die Erfindung nachstehend erläutert.With reference to the drawing, the invention will be explained below.
Ausführungsvariante:Variant:
Gemäß des in
Die Auswerteschaltung
Zwischen dem Mikroprozessor
Durch die serielle Schnittstelle
Das digitalisierte Signal
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Geberradsensor wheel
- 22
- Umfangscope
- 33
- GeberradmarkeGeberradmarke
- 44
- InduktivaufnehmerInductive
- 55
- Übertragungsleitungtransmission line
- 66
- Auswerteschaltungevaluation
- 6.16.1
- Signaleingangsignal input
- 6.26.2
- Signalausgang (digital)Signal output (digital)
- 6.36.3
- SchnittstellenausgangInterface output
- 6.46.4
- Signalwandlersignal converter
- 6.56.5
- Signalfiltersignal filter
- 77
- Mikroprozessormicroprocessor
- 88th
- SchnittstelleneingangInterface input
- 99
- serieller Bus (bidirektional)serial bus (bidirectional)
- 1010
- digitales Drehzahlsignaldigital speed signal
- 1111
- digitaler Signaleingangdigital signal input
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19955513A DE19955513B4 (en) | 1999-11-18 | 1999-11-18 | Configurable evaluation circuit for an inductively recorded signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19955513A DE19955513B4 (en) | 1999-11-18 | 1999-11-18 | Configurable evaluation circuit for an inductively recorded signal |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19955513A1 DE19955513A1 (en) | 2001-05-23 |
DE19955513B4 true DE19955513B4 (en) | 2011-03-31 |
Family
ID=7929493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE19955513A Expired - Fee Related DE19955513B4 (en) | 1999-11-18 | 1999-11-18 | Configurable evaluation circuit for an inductively recorded signal |
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Country | Link |
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DE (1) | DE19955513B4 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1426596B1 (en) * | 2002-11-28 | 2006-05-31 | STMicroelectronics S.r.l. | Electronic device architecture for determining the operating phase of an internal combustion motor |
EP1424479A1 (en) * | 2002-11-28 | 2004-06-02 | STMicroelectronics S.r.l. | Electronic device architecture for determining the angular position of an engine shaft in internal combustion engines |
US7310574B2 (en) | 2002-11-28 | 2007-12-18 | Stmicroelectronics S.R.L. | Electronic architecture of an automatic system for driving an internal combustion engine |
DE102005055951A1 (en) | 2005-11-24 | 2007-05-31 | Robert Bosch Gmbh | Evaluation circuit for processing digital signal, has signal paths and set of parameters assigned to each path, where different processing of input data item leads to processed data items that are dependent on parameters of respective paths |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3127220C2 (en) * | 1981-07-10 | 1983-04-14 | Robert Bosch Gmbh, 7000 Stuttgart | Device for generating a speed-dependent signal sequence |
US5293137A (en) * | 1992-05-26 | 1994-03-08 | Tavis Corporation | Digital transducer system including two reactive transducers forming resonant oscillator circuits |
US5450008A (en) * | 1994-02-22 | 1995-09-12 | Delco Electronics Corp. | Adaptive loading circuit for a differential input magnetic wheel speed sensor |
EP0718728A1 (en) * | 1994-12-23 | 1996-06-26 | LOMAR s.r.l. | Device for controlling at least one actuator, operatively connectable to a flexible programming station |
US5638272A (en) * | 1993-07-26 | 1997-06-10 | Hitachi, Ltd. | Control unit for vehicle and total control system therefor |
EP0855293A2 (en) * | 1997-01-15 | 1998-07-29 | Algonquin Scientific, LLC | Tire pressure sensing system |
-
1999
- 1999-11-18 DE DE19955513A patent/DE19955513B4/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3127220C2 (en) * | 1981-07-10 | 1983-04-14 | Robert Bosch Gmbh, 7000 Stuttgart | Device for generating a speed-dependent signal sequence |
US5293137A (en) * | 1992-05-26 | 1994-03-08 | Tavis Corporation | Digital transducer system including two reactive transducers forming resonant oscillator circuits |
US5638272A (en) * | 1993-07-26 | 1997-06-10 | Hitachi, Ltd. | Control unit for vehicle and total control system therefor |
US5450008A (en) * | 1994-02-22 | 1995-09-12 | Delco Electronics Corp. | Adaptive loading circuit for a differential input magnetic wheel speed sensor |
EP0718728A1 (en) * | 1994-12-23 | 1996-06-26 | LOMAR s.r.l. | Device for controlling at least one actuator, operatively connectable to a flexible programming station |
EP0855293A2 (en) * | 1997-01-15 | 1998-07-29 | Algonquin Scientific, LLC | Tire pressure sensing system |
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Publication number | Publication date |
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DE19955513A1 (en) | 2001-05-23 |
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8110 | Request for examination paragraph 44 | ||
R020 | Patent grant now final | ||
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Effective date: 20110817 |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |