FR2281677A1 - Frequency to voltage converter for engine control tachometer - has Miller integrator controlling saw-tooth generator using comparators - Google Patents

Frequency to voltage converter for engine control tachometer - has Miller integrator controlling saw-tooth generator using comparators

Info

Publication number
FR2281677A1
FR2281677A1 FR7427449A FR7427449A FR2281677A1 FR 2281677 A1 FR2281677 A1 FR 2281677A1 FR 7427449 A FR7427449 A FR 7427449A FR 7427449 A FR7427449 A FR 7427449A FR 2281677 A1 FR2281677 A1 FR 2281677A1
Authority
FR
France
Prior art keywords
comparators
miller integrator
frequency
engine control
voltage converter
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.)
Granted
Application number
FR7427449A
Other languages
French (fr)
Other versions
FR2281677B1 (en
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.)
Texas Instruments France SAS
Original Assignee
Texas Instruments France SAS
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 Texas Instruments France SAS filed Critical Texas Instruments France SAS
Priority to FR7427449A priority Critical patent/FR2281677A1/en
Publication of FR2281677A1 publication Critical patent/FR2281677A1/en
Application granted granted Critical
Publication of FR2281677B1 publication Critical patent/FR2281677B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K9/00—Demodulating pulses which have been modulated with a continuously-variable signal
    • H03K9/06—Demodulating pulses which have been modulated with a continuously-variable signal of frequency- or rate-modulated pulses
    • 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
    • G01P3/46—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage
    • 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
    • G01P3/4802—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage by using electronic circuits in general
    • G01P3/4805—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage by using electronic circuits in general by using circuits for the electrical integration of the generated pulses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G01R23/06—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into an amplitude of current or voltage
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K11/00—Transforming types of modulations, e.g. position-modulated pulses into duration-modulated pulses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

A saw tooth signal generator (5, 6) is synchronised by the signals whose frequency is to be converted. First and second comparators (14, 15) compare the saw tooth signals with a fixed reference voltage (18). First and second current sources (11, 12) are respectively controlled by the first and second comparators (14, 15), and a Miller integrator (7, 8, 9, 10) connected between the first and second current sources and the saw tooth signal generator controls the current delivered by the generator as a function of the output current of the Miller integrator and provides a continuous output voltage whose value is a function of the cyclic ratio of the putting into conduction of the first and second current sources by the first and second comparators.
FR7427449A 1974-08-07 1974-08-07 Frequency to voltage converter for engine control tachometer - has Miller integrator controlling saw-tooth generator using comparators Granted FR2281677A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7427449A FR2281677A1 (en) 1974-08-07 1974-08-07 Frequency to voltage converter for engine control tachometer - has Miller integrator controlling saw-tooth generator using comparators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7427449A FR2281677A1 (en) 1974-08-07 1974-08-07 Frequency to voltage converter for engine control tachometer - has Miller integrator controlling saw-tooth generator using comparators

Publications (2)

Publication Number Publication Date
FR2281677A1 true FR2281677A1 (en) 1976-03-05
FR2281677B1 FR2281677B1 (en) 1977-06-24

Family

ID=9142206

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7427449A Granted FR2281677A1 (en) 1974-08-07 1974-08-07 Frequency to voltage converter for engine control tachometer - has Miller integrator controlling saw-tooth generator using comparators

Country Status (1)

Country Link
FR (1) FR2281677A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0788230A3 (en) * 1996-02-02 1998-07-29 SILICONIX Incorporated Frequency-to-current converter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0788230A3 (en) * 1996-02-02 1998-07-29 SILICONIX Incorporated Frequency-to-current converter
US5955903A (en) * 1996-02-02 1999-09-21 Siliconix Incorporated Folded ramp capacitance circuit with current source and comparator circuit

Also Published As

Publication number Publication date
FR2281677B1 (en) 1977-06-24

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