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JPS5677759A - Detecting device of rotational frequency - Google Patents

Detecting device of rotational frequency

Info

Publication number
JPS5677759A
JPS5677759A JP15470179A JP15470179A JPS5677759A JP S5677759 A JPS5677759 A JP S5677759A JP 15470179 A JP15470179 A JP 15470179A JP 15470179 A JP15470179 A JP 15470179A JP S5677759 A JPS5677759 A JP S5677759A
Authority
JP
Japan
Prior art keywords
rotational frequency
frequency
signal
teeth
engine
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
JP15470179A
Other languages
Japanese (ja)
Inventor
Hidekazu Oshizawa
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.)
Bosch Corp
Original Assignee
Diesel Kiki Co 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 Diesel Kiki Co Ltd filed Critical Diesel Kiki Co Ltd
Priority to JP15470179A priority Critical patent/JPS5677759A/en
Priority to GB8034585A priority patent/GB2064129B/en
Priority to DE19803044924 priority patent/DE3044924A1/en
Publication of JPS5677759A publication Critical patent/JPS5677759A/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
    • F02D41/0097—Electrical control of supply of combustible mixture or its constituents using means for generating speed signals
    • 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
    • G01P3/489—Digital circuits therefor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number

Landscapes

  • 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)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)

Abstract

PURPOSE: To realize a high-accuracy detection of the rotational frequency in a short time, by giving an iteger-fold multiplication to the frequency of the AC signal corresponding to the rotational frequency by the PLL.
CONSTITUTION: The teeth of the gear 2 forming the converting unit 4 fixed to the crank shaft of the engine or the like are detected by the electromagnetic pickup 3, and then the AC signal of the frequency proportional to the rotational frequency of the engine is produced. This signal is turned into the signal of the frequency which is multiplied by N-fold through the PLL6 incorporating the phase comparator 9, voltage control oscillator 7, 1/N-divider 8 and others via the waveform shaping circuit 5 each. Thus the counting period is controlled for the counter 13 which detects the rotational frequency by counting the clock supplied from the reference pulse generator 12 in the measuring circuit 14. In such way, a high-accuracy detection is made possible for the rotational frequency in a short time with a simple constitution without increasing the number of teeth of the converting unit.
COPYRIGHT: (C)1981,JPO&Japio
JP15470179A 1979-11-29 1979-11-29 Detecting device of rotational frequency Pending JPS5677759A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP15470179A JPS5677759A (en) 1979-11-29 1979-11-29 Detecting device of rotational frequency
GB8034585A GB2064129B (en) 1979-11-29 1980-10-28 Measuring rotational speed electrically
DE19803044924 DE3044924A1 (en) 1979-11-29 1980-11-28 DEVICE FOR MEASURING THE SPEED

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15470179A JPS5677759A (en) 1979-11-29 1979-11-29 Detecting device of rotational frequency

Publications (1)

Publication Number Publication Date
JPS5677759A true JPS5677759A (en) 1981-06-26

Family

ID=15590051

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15470179A Pending JPS5677759A (en) 1979-11-29 1979-11-29 Detecting device of rotational frequency

Country Status (3)

Country Link
JP (1) JPS5677759A (en)
DE (1) DE3044924A1 (en)
GB (1) GB2064129B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61137219U (en) * 1985-02-15 1986-08-26
US6493628B2 (en) * 2000-01-20 2002-12-10 Denso Corporation Engine control unit having frequency-multiplied signal generating function

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0113455A1 (en) * 1982-12-15 1984-07-18 Honeywell Inc. Apparatus for counting the number of fringe changes of a varying interference fringe pattern
GB8318008D0 (en) * 1983-07-02 1983-08-03 Lucas Ind Plc Angular position detector
FR2558619B1 (en) * 1984-01-24 1989-09-08 Ramses ELECTRONIC METHOD AND DEVICE FOR SIMULATING AT LEAST ONE POSITION SENSOR FOR AT LEAST ONE MOVING MEMBER
US4742297A (en) * 1985-07-08 1988-05-03 Teleflex Incorporated Programmable cycle meter
FR2645648B1 (en) * 1989-04-07 1991-11-29 Lorraine Laminage DEVICE FOR MEASURING THE ROTATION SPEED IN PARTICULAR OF A ROLLER CAGE MOTOR

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61137219U (en) * 1985-02-15 1986-08-26
US6493628B2 (en) * 2000-01-20 2002-12-10 Denso Corporation Engine control unit having frequency-multiplied signal generating function

Also Published As

Publication number Publication date
GB2064129B (en) 1983-07-06
GB2064129A (en) 1981-06-10
DE3044924A1 (en) 1982-05-27

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