CH609460A5 - Method and installation for determining and displaying a permitted limit speed of a vehicle - Google Patents

Method and installation for determining and displaying a permitted limit speed of a vehicle

Info

Publication number
CH609460A5
CH609460A5 CH416476A CH416476A CH609460A5 CH 609460 A5 CH609460 A5 CH 609460A5 CH 416476 A CH416476 A CH 416476A CH 416476 A CH416476 A CH 416476A CH 609460 A5 CH609460 A5 CH 609460A5
Authority
CH
Switzerland
Prior art keywords
pulses
vehicle
barriers
speed
permitted limit
Prior art date
Application number
CH416476A
Inventor
Pierre Edmond Tuffei
Original Assignee
Tuffet Pierre Edmond
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 Tuffet Pierre Edmond filed Critical Tuffet Pierre Edmond
Publication of CH609460A5 publication Critical patent/CH609460A5/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096708—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
    • G08G1/096716—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control where the received information does not generate an automatic action on the vehicle control
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/07—Indicating devices, e.g. for remote indication
    • G01P1/08—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers
    • G01P1/10—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers for indicating predetermined speeds
    • G01P1/103—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers for indicating predetermined speeds by comparing the value of the measured signal with one or several reference values
    • 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
    • G01P3/56—Devices characterised by the use of electric or magnetic means for comparing two speeds
    • G01P3/60—Devices characterised by the use of electric or magnetic means for comparing two speeds by measuring or comparing frequency of generated currents or voltages
    • 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
    • G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
    • G01P3/66—Devices characterised by the determination of the time taken to traverse a fixed distance using electric or magnetic means
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096708—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
    • G08G1/096725—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control where the received information generates an automatic action on the vehicle control
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096733—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place
    • G08G1/096758—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place where no selection takes place on the transmitted or the received information
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
    • G08G1/096783—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a roadside individual element

Abstract

The method uses a road infrastructure formed by pairs of magnetic barriers and a detector associated with electronic circuits provided on the vehicle. A tachometric pick-up provides a train of pulses whose frequency is a function of the instantaneous speed of the vehicle. The pulses of this train appearing between two validated pulses coming from a pair of magnetic barriers are counted. The time taken for the vehicle to cross this pair of barriers is measured. The distance separating the barriers is deduced therefrom and from this information, and a reference time, the permitted limit speed is determined and displayed in the vehicle. The installation comprises pairs of magnetic barriers embedded in the roadway and on the vehicle, a detector (2, 6) supplying pulses when the barriers are crossed, a tachometric pick-up (9) providing speed pulses, a device (8) for counting the speed pulses, a device (8) for measuring the time between two pulses from the magnetic barriers, a device (8) for calculating corresponding distance information, a device (8) for converting this distance into a permitted limit speed, and a device (14, 15) for displaying this speed, which allows the driver to be informed continuously of the permitted limit speed on his current route (Fig. 1). <IMAGE>
CH416476A 1975-04-09 1976-04-02 Method and installation for determining and displaying a permitted limit speed of a vehicle CH609460A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7511017A FR2307272A1 (en) 1975-04-09 1975-04-09 ROAD SIGNALING WARNING METHOD AND SYSTEM WITH AUTHORIZED SPEED DISPLAY

Publications (1)

Publication Number Publication Date
CH609460A5 true CH609460A5 (en) 1979-02-28

Family

ID=9153676

Family Applications (1)

Application Number Title Priority Date Filing Date
CH416476A CH609460A5 (en) 1975-04-09 1976-04-02 Method and installation for determining and displaying a permitted limit speed of a vehicle

Country Status (8)

Country Link
JP (1) JPS51123599A (en)
CA (1) CA1093657A (en)
CH (1) CH609460A5 (en)
DE (1) DE2615424A1 (en)
ES (1) ES446820A1 (en)
FR (1) FR2307272A1 (en)
GB (1) GB1534729A (en)
IT (1) IT1058798B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2467451A1 (en) * 1979-10-10 1981-04-17 Sarrosquy Gerard Vehicle speed roadside controller - uses transmitters and vehicle-mounted receivers to signal to driver, and cut off the ignition if maximum speed is exceeded
DE19506420A1 (en) * 1995-02-24 1996-08-29 Eugen Dr Med Breimann Motor vehicle with external speed display for high-speed motor-way sections
GB2363885A (en) * 2000-06-21 2002-01-09 Robert John Pigott Speed limit display for road vehicles
FR2868540B1 (en) * 2004-03-30 2006-07-28 Andre Gautreau METHOD FOR SIGNALING READ INFORMATION FOR A VEHICLE, AND DEVICES FOR IMPLEMENTING SAID METHOD
CN110189547B (en) * 2019-05-30 2020-10-20 广州小鹏汽车科技有限公司 Obstacle detection method and device and vehicle
CN112796251B (en) * 2020-12-21 2022-06-17 山东祥瑞路桥工程有限公司 Mechanical anti-deviation road isolation pier
CN117437791B (en) * 2023-12-14 2024-02-20 山东彩旺建设有限公司 Intelligent urban traffic guardrail anti-collision prompt system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044043A (en) * 1958-07-21 1962-07-10 Gen Motors Corp Vehicle signalling apparatus for warning of approaching road conditions
DE2334406A1 (en) * 1972-07-17 1974-01-31 Pierre Edmond Tuffet TRAFFIC SIGN WARNING SYSTEM

Also Published As

Publication number Publication date
JPS51123599A (en) 1976-10-28
CA1093657A (en) 1981-01-13
FR2307272B1 (en) 1981-12-31
ES446820A1 (en) 1977-06-01
IT1058798B (en) 1982-05-10
GB1534729A (en) 1978-12-06
DE2615424A1 (en) 1976-10-14
FR2307272A1 (en) 1976-11-05

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Legal Events

Date Code Title Description
PL Patent ceased