EP0100409B1 - Steuervorrichtung mit einem Mikrorechner - Google Patents

Steuervorrichtung mit einem Mikrorechner Download PDF

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Publication number
EP0100409B1
EP0100409B1 EP83105370A EP83105370A EP0100409B1 EP 0100409 B1 EP0100409 B1 EP 0100409B1 EP 83105370 A EP83105370 A EP 83105370A EP 83105370 A EP83105370 A EP 83105370A EP 0100409 B1 EP0100409 B1 EP 0100409B1
Authority
EP
European Patent Office
Prior art keywords
microcomputer
reset
control device
control
encoder
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
Application number
EP83105370A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0100409A3 (en
EP0100409A2 (de
Inventor
Jörg Dipl.-Ing. Bonitz
Robert Entenmann
Gèza Killi
Rochus Knab
Bernhard Miller
Siegfried Dr.-Ing. Rohde
Walter Viess
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0100409A2 publication Critical patent/EP0100409A2/de
Publication of EP0100409A3 publication Critical patent/EP0100409A3/de
Application granted granted Critical
Publication of EP0100409B1 publication Critical patent/EP0100409B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
    • F02P15/008—Reserve ignition systems; Redundancy of some ignition devices
    • 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
    • F02D41/266—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor the computer being backed-up or assisted by another circuit, e.g. analogue

Definitions

  • the invention relates to a control device with a microcomputer according to the preamble of the main claim.
  • control devices are known for example from DE-A-2 850 534 for controlling ignition and injection in internal combustion engines.
  • Other functions such as the control of on-board computers, vehicle transmissions and anti-lock devices, are also known in the motor vehicle as controlled by microcomputers.
  • B. heating technology and machine tool technology microcontrolled control and control units have become established.
  • These known control devices generate control output signals as a function of initially predominantly periodic encoder signals, the microcomputer usually being initialized when the supply voltage is switched on, that is to say brought to a defined initial state.
  • a so-called watchdog circuit can be provided in a known manner, as is known, for example, from DE-A-2903638. Such circuits monitor the periodic execution of the program and, when a fault is detected, generate a reset pulse, which brings the microcomputer back to a defined initial state. This additional circuit for the detection of faults requires considerable effort, especially if the occurrence of the most varied of faults is to be detected with difficulty.
  • an ignition system for magnetic magister has also become known.
  • This ignition system is controlled by a microprocessor.
  • a switch-on reset process is provided for the microprocessor. No further reset operations are carried out during operation.
  • US-A-4 282 574 it is known to reinitialize the microprocessor at equidistant time intervals when operating microprocessors in the motor vehicle by means of a clock generator. If the computer fails, it is possible to maintain a reasonably trouble-free operation of the computer through regular reinitialization. It is disadvantageous that the time-dependent initialization has the effect that computing processes that are currently running may be interrupted and must now be carried out again. In particular, if the microprocessor is already subjected to a high load, the case can then arise that the microprocessor is no longer able to carry out all machining processes properly.
  • the control device with the characterizing features of the main claim has the advantage that the reset pulses are emitted in connection with periodically occurring encoder signals. On the one hand, this forces the microcomputer into the correct program sequence with each new period, on the other hand, it ensures that the reset process occurs at a point in time when calculation processes have not usually started yet, but that the microprocessor starts new processes anyway due to the encoder signal that occurs got to. The result of this is that a possible error is eliminated in the shortest possible time, or the additional circuitry is minimal.
  • a sensor arrangement 10 which rotates as a function of the speed of an internal combustion engine which can be, for example, a Hall, an optical or an inductive sensor arrangement, is connected on the output side via a differentiating element 11 to the reset input of a microcomputer 12 and additionally via an inverter 13 with the interrupt Input of this microcomputer 12 connected.
  • this microcomputer 12 is used to control the fuel injection and the ignition of an internal combustion engine, which is represented by four injection nozzles 14 controlled on the output side and an ignition output stage 15.
  • a microcomputer for controlling ignition and injection is described in more detail in the prior art specified at the beginning.
  • Other parameters P such as. B. the temperature, the intake manifold pressure, etc. serve in a known manner for additional control of the output variables of the microcomputer 12th
  • the microcomputer 12 is not restarted or defined in accordance with the known state of the art by applying the supply voltage or in the event of a fault by a reset signal, but rather by each encoder signal from the encoder 10. This means that a defined one is reset in the microcomputer 12 by resetting the address counter Program start enabled. A simultaneous deletion of the cell pointer (stack pointer) prevents or corrects any errors in subroutine processing. All parameters (bank selection, interrupt processing, flag, counter) and ports are redefined by this constantly recurring reset pulse and can be brought back to the desired positions.
  • One edge of the input signal is converted into a short pulse by the differentiator and resets the microcomputer 12 at the beginning of each new encoder signal.
  • the intended program sequence is always carried out anew from predefined initial conditions.
  • the other edge of the encoder signal is inverted by the inverter 13 and fed to the external interrupt input of the microcomputer 12.
  • the inverter 13 can also be omitted. Based on the program, a numerical value is determined in a known manner in the microcomputer 12 as a function of the operating parameters present, which is then counted in order to achieve a trigger pulse on the output side.
  • this counting is advantageously carried out from the interrupt pulse, that is to say from the second signal edge of the encoder signal from the encoder 10.
  • a counting process is used, for example, to determine the start and end of the current flow (ignition timing) in an ignition coil.
  • the two output signal edges can be switched to auxiliary triggering of the output circuits.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Retry When Errors Occur (AREA)
  • Executing Machine-Instructions (AREA)
  • Control By Computers (AREA)
EP83105370A 1982-06-28 1983-05-31 Steuervorrichtung mit einem Mikrorechner Expired EP0100409B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823224286 DE3224286A1 (de) 1982-06-28 1982-06-28 Steuervorrichtung mit einem mikrorechner
DE3224286 1982-06-28

Publications (3)

Publication Number Publication Date
EP0100409A2 EP0100409A2 (de) 1984-02-15
EP0100409A3 EP0100409A3 (en) 1985-10-30
EP0100409B1 true EP0100409B1 (de) 1988-09-07

Family

ID=6167150

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83105370A Expired EP0100409B1 (de) 1982-06-28 1983-05-31 Steuervorrichtung mit einem Mikrorechner

Country Status (4)

Country Link
US (1) US4562544A (ja)
EP (1) EP0100409B1 (ja)
JP (1) JPH0658086B2 (ja)
DE (2) DE3224286A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4803682A (en) * 1985-03-04 1989-02-07 Sanyo Electric Co., Ltd. Resetting system
DE3544079C2 (de) * 1985-12-13 1998-07-30 Bosch Gmbh Robert Verfahren zur Verarbeitung von Interrupt-Signalen
DE3603082A1 (de) * 1986-02-01 1987-08-06 Bosch Gmbh Robert Vorrichtung zum ruecksetzen von recheneinrichtungen
US5051936A (en) * 1987-12-21 1991-09-24 Johnson Service Company Microprocessor-based controller with synchronous reset
US4931975A (en) * 1987-12-21 1990-06-05 Johnson Service Company Microprocessor-based controller with synchronous reset
US5408573A (en) * 1992-06-17 1995-04-18 Johnson Service Company Integrated motor controller
DE10030991A1 (de) * 2000-06-30 2002-01-10 Bosch Gmbh Robert Verfahren und Vorrichtung zur Synchronisation eines Rechners und einer Überwachungsschaltung

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969614A (en) * 1973-12-12 1976-07-13 Ford Motor Company Method and apparatus for engine control
DE2551681C2 (de) * 1975-11-18 1986-10-02 Robert Bosch Gmbh, 7000 Stuttgart Elektrisch gesteuerte Kraftstoffeinspritzanlage für Brennkraftmaschinen
DE2700677A1 (de) * 1977-01-08 1978-07-20 Bosch Gmbh Robert Zuendanlage, insbesondere fuer brennkraftmaschinen
JPS6010174B2 (ja) * 1977-04-15 1985-03-15 株式会社デンソー 車載コンピユ−タの起動装置
JPS5498476A (en) * 1978-01-19 1979-08-03 Nippon Denso Co Ltd Computer for controlling vehicles
EP0007984B1 (de) * 1978-08-09 1981-11-11 Robert Bosch Gmbh Einrichtung zum Steuern der Zünd- und/oder Kraftstoffeinspritzvorgänge bei Brennkraftmaschinen
JPS5535165A (en) * 1978-09-06 1980-03-12 Hitachi Ltd Controlling acceleration of automobile engine
JPS55137358A (en) * 1979-04-16 1980-10-27 Nissan Motor Co Ltd Controller for automobile
JPS5622168A (en) * 1979-07-31 1981-03-02 Fujitsu Ltd Control system of array processor
JPS56105507A (en) * 1980-01-25 1981-08-22 Hitachi Ltd Control method of engine
DE3006288A1 (de) * 1980-02-20 1981-08-27 Robert Bosch Gmbh, 7000 Stuttgart Schaltungsanordnung zur zuendung von brennkraftmaschinen

Also Published As

Publication number Publication date
DE3224286A1 (de) 1983-12-29
US4562544A (en) 1985-12-31
EP0100409A3 (en) 1985-10-30
JPH0658086B2 (ja) 1994-08-03
DE3377926D1 (en) 1988-10-13
EP0100409A2 (de) 1984-02-15
JPS5962905A (ja) 1984-04-10

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