JPS56111901A - Signal processing circuit - Google Patents

Signal processing circuit

Info

Publication number
JPS56111901A
JPS56111901A JP1533180A JP1533180A JPS56111901A JP S56111901 A JPS56111901 A JP S56111901A JP 1533180 A JP1533180 A JP 1533180A JP 1533180 A JP1533180 A JP 1533180A JP S56111901 A JPS56111901 A JP S56111901A
Authority
JP
Japan
Prior art keywords
input
circuit
output
various types
cpu102
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.)
Pending
Application number
JP1533180A
Other languages
Japanese (ja)
Inventor
Makoto Aihara
Matsuo Amano
Takeshi Hirayama
Shigeo Kuboki
Shiro Baba
Masami Shida
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1533180A priority Critical patent/JPS56111901A/en
Publication of JPS56111901A publication Critical patent/JPS56111901A/en
Pending legal-status Critical Current

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control By Computers (AREA)

Abstract

PURPOSE:To obtain a digital conversion value with high accuracy, by putting the value of a certain bit number designated among the prescribed bit number obtained by converting the analog signals sent from various types of sensors into the digital signals into a computer. CONSTITUTION:The CPU102 gives an operation to the input data given from the input/output circuit 108 based on various types of programs stored in the ROM104 and then sends the result of operation through the input/output circuit again to drive the injector 12 and others. The circuit 108 includes the 1st A/D converter ADC1, angle signal processing circuit 126, input means of discrete input/output circuit DIO, injector control circuit 134, and output means of ignition pulse generator circuit 138 and others. The converter ADC1 sets the outputs given from various types of sensors to the register 124 in the form of an input/output data and via the multiplexer 120 plus an A/D converter circuit. A certain higher-rank bit of the input/output data is taken into the RAM106 under the control of the CPU102.
JP1533180A 1980-02-08 1980-02-08 Signal processing circuit Pending JPS56111901A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1533180A JPS56111901A (en) 1980-02-08 1980-02-08 Signal processing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1533180A JPS56111901A (en) 1980-02-08 1980-02-08 Signal processing circuit

Publications (1)

Publication Number Publication Date
JPS56111901A true JPS56111901A (en) 1981-09-04

Family

ID=11885795

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1533180A Pending JPS56111901A (en) 1980-02-08 1980-02-08 Signal processing circuit

Country Status (1)

Country Link
JP (1) JPS56111901A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49128665A (en) * 1973-04-09 1974-12-10
JPS5129056A (en) * 1974-09-06 1976-03-11 Tokyo Electric Power Co DEETANYURYOKUSEIGYO SOCHI
JPS5314232A (en) * 1976-07-23 1978-02-08 Nippon Denso Co Ltd Fuel injection quantity calculation system for internal combustion engine
JPS5447079A (en) * 1977-09-21 1979-04-13 Hitachi Ltd Digital control means

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49128665A (en) * 1973-04-09 1974-12-10
JPS5129056A (en) * 1974-09-06 1976-03-11 Tokyo Electric Power Co DEETANYURYOKUSEIGYO SOCHI
JPS5314232A (en) * 1976-07-23 1978-02-08 Nippon Denso Co Ltd Fuel injection quantity calculation system for internal combustion engine
JPS5447079A (en) * 1977-09-21 1979-04-13 Hitachi Ltd Digital control means

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