FR2389894A1 - Instantaneous mean speed display for vehicle - has counter which processes signals from sensor to produce output representing distance from datum point - Google Patents

Instantaneous mean speed display for vehicle - has counter which processes signals from sensor to produce output representing distance from datum point

Info

Publication number
FR2389894A1
FR2389894A1 FR7713294A FR7713294A FR2389894A1 FR 2389894 A1 FR2389894 A1 FR 2389894A1 FR 7713294 A FR7713294 A FR 7713294A FR 7713294 A FR7713294 A FR 7713294A FR 2389894 A1 FR2389894 A1 FR 2389894A1
Authority
FR
France
Prior art keywords
counter
vehicle
mean speed
sensor
speed display
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
FR7713294A
Other languages
French (fr)
Other versions
FR2389894B1 (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7713294A priority Critical patent/FR2389894A1/en
Publication of FR2389894A1 publication Critical patent/FR2389894A1/en
Application granted granted Critical
Publication of FR2389894B1 publication Critical patent/FR2389894B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P11/00—Measuring average value of speed

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)
  • Measurement Of Distances Traversed On The Ground (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

A magnetic sensor (26), palced on the vehicle's speedometer, feeds impulses to a circuit (12) which converts them to logic level pulses and feeds them to a counter (34) in which one impulse represents, say, 10 metres. The sequence control circuit (50) generates a clock function e.g. every 36 seconds, which is fed to a second counter (24), an impulse generator (30), which outputs the impulses contained in counter (34), a programmable frequency divider (14), and a digital display (22). The divider thus gives unit distance in unit time, giving a stored velocity, and thus mean speed over a given distance.
FR7713294A 1977-05-03 1977-05-03 Instantaneous mean speed display for vehicle - has counter which processes signals from sensor to produce output representing distance from datum point Granted FR2389894A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7713294A FR2389894A1 (en) 1977-05-03 1977-05-03 Instantaneous mean speed display for vehicle - has counter which processes signals from sensor to produce output representing distance from datum point

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7713294A FR2389894A1 (en) 1977-05-03 1977-05-03 Instantaneous mean speed display for vehicle - has counter which processes signals from sensor to produce output representing distance from datum point

Publications (2)

Publication Number Publication Date
FR2389894A1 true FR2389894A1 (en) 1978-12-01
FR2389894B1 FR2389894B1 (en) 1981-09-11

Family

ID=9190231

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7713294A Granted FR2389894A1 (en) 1977-05-03 1977-05-03 Instantaneous mean speed display for vehicle - has counter which processes signals from sensor to produce output representing distance from datum point

Country Status (1)

Country Link
FR (1) FR2389894A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416455A1 (en) * 1978-02-03 1979-08-31 Angelov Theodore Automobile performance measurement and digital display system - uses counters and periodically updates and displays fuel consumption and speed reference signal
FR2459453A1 (en) * 1979-06-14 1981-01-09 Nissan Motor NAVIGATION INSTRUMENT

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416455A1 (en) * 1978-02-03 1979-08-31 Angelov Theodore Automobile performance measurement and digital display system - uses counters and periodically updates and displays fuel consumption and speed reference signal
FR2459453A1 (en) * 1979-06-14 1981-01-09 Nissan Motor NAVIGATION INSTRUMENT

Also Published As

Publication number Publication date
FR2389894B1 (en) 1981-09-11

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Legal Events

Date Code Title Description
ST Notification of lapse