GB2425421A - Road based vehicle speed sensor - Google Patents

Road based vehicle speed sensor Download PDF

Info

Publication number
GB2425421A
GB2425421A GB0505927A GB0505927A GB2425421A GB 2425421 A GB2425421 A GB 2425421A GB 0505927 A GB0505927 A GB 0505927A GB 0505927 A GB0505927 A GB 0505927A GB 2425421 A GB2425421 A GB 2425421A
Authority
GB
United Kingdom
Prior art keywords
road
speed sensor
lights
vehicle speed
based vehicle
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.)
Withdrawn
Application number
GB0505927A
Other versions
GB0505927D0 (en
Inventor
David Drewette
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 GB0505927A priority Critical patent/GB2425421A/en
Publication of GB0505927D0 publication Critical patent/GB0505927D0/en
Publication of GB2425421A publication Critical patent/GB2425421A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/91—Radar or analogous systems specially adapted for specific applications for traffic control
    • G01S13/92—Radar or analogous systems specially adapted for specific applications for traffic control for velocity measurement
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/095—Traffic lights
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/16—Anti-collision systems
    • G08G1/164—Centralised systems, e.g. external to vehicles

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Traffic Control Systems (AREA)

Abstract

A road based vehicle speed sensor is disclosed comprising two coloured lights 1 activated by a separate Doppler radar speed sensor unit 6 and powered by an external mains supply. The Doppler radar speed sensor 6 may be mounted inside a bollard 5 and have a pre-programmed internal microchip to activate the lights 1 with different colours depending on the approach speed of a vehicle. The light unit 2 may flash the lights 1 depending on the speed of the approaching vehicle. The light unit 2 may have a groove (4,Fig2) on its surface to allow for accurate installation. The disclosed arrangement is particularly suited for visually alerting road users when they are exceeding the speed limit on a road.

Description

1 2425421 Road-Based Vehicle Speed Sensor This invention relates to a
vehicle speed sensor which is activated by a Doppler radar detector which senses the speed of an approaching vehicle. The Doppler speed sensor unit is contained within a bollard at the side of the road and connected to the light units by a wire cable. The light units contain two LED lights and are situated at the edge of the road in plain sight of road vehicles.
Road safety and traffic control are critical issues when designing a new road or maintaining an existing one. Often people may inadvertently drift over the speed limit or be unaware of the actual speed limit that is in force on a particular road.
The objective of this invention is to alert road users when they are exceeding the speed limit on a road by using non-intrusive light signals that will not distract the driver.
This invention consists of two warning lights that can change colour and a Doppler radar speed sensor located in a road-side bollard to detect the speed of an oncoming vehicle.
The unit is powered by an external mains supply.
The light unit will show two green lights if the oncoming vehicle is at or below the pre- selected speed limit. If the vehicle exceeds the speed limit by 1 % to 50%, the lights will glow red in colour. If the vehicle exceeds the speed limit by 51 % to 100%, the lights will flash alternately in the colour red. If the vehicle exceeds the speed limit by more than 100%, both lights will flash simultaneously in the colour red.
Note: The colour of these lights may vary depending on the design requirements of future clients.
A preferred embodiment of the invention will now be described with reference to the accompanying drawing in which: Figure 1 shows a plan view of the light unit.
Figure 2 shows a front elevation view of the light unit.
Figure 3 shows a front elevation of the bollard containing the Doppler radar speed sensor.
Figure 4 shows a plan view of a typical road layout featuring the locations of the bollard and light units. 7)
As shown in Figure 1, the light unit 2 has two front mounted lights I encased in a high- impact casing and fed by a power cable 3.
Contained within the bollard 5 there is a central microchip which can be pre- programmed with all the necessary data to allow the unit to show different coloured lights depending on the speed of an oncoming vehicle.
Figure 2 shows a front elevation view of the light unit 2 as the driver of an oncoming vehicle would see it.
As detailed above, if the vehicle is at or under the speed limit the lights 1 will glow in the colour green.
If the oncoming vehicle exceeds the speed limit by I % to 50% the lights 1 will glow in the colour red.
If the oncoming vehicle exceeds the speed limit by 51 % to 100% the lights I will flash alternately, ie one after the other, in the colour red.
If the oncoming vehicle exceeds the speed limit by more than 100% the lights I will flash simultaneously in the colour red.
Note: The colour of these lights may vary depending on the design requirements of future clients.
For easy and accurate installation there is a groove 4 cut on the top surface of the speed sensor unit which will allow for correct alignment.
It is envisaged that this invention can be used on almost any road where there is an enforceable speed limit. Specifically, the speed sensor can be employed in areas where accidents are common or there are ongoing road maintenance works.
There may also be a need for the speed sensor to be used in so-called "traffic calming" areas where pedestrian traffic (eg, school children) is heavy and frequent. *

Claims (6)

1. A road-based vehicle speed sensor which has lights activated by a separate Doppler radar speed detector and powered by an external mains supply.
2. A road-based vehicle speed sensor as claimed in Claim I which has two LED lights which can change in colour or flash depending on the approach speed of a vehicle.
3. A road-based vehicle speed sensor as claimed in Claim 1 which has a Doppler radar detector mounted inside a bollard located at the side of the road.
4. A road-based vehicle speed sensor as claimed in Claim I which has its components parts connected by a wire cable to allow for the illumination of the LED lights.
5. A road-based vehicle speed sensor as claimed in any proceeding claim which is made from metal and plastic or a combination of these materials.
6. A road-based vehicle speed sensor substantially as herein described above and illustrated in the accompanying drawings.
GB0505927A 2005-03-23 2005-03-23 Road based vehicle speed sensor Withdrawn GB2425421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0505927A GB2425421A (en) 2005-03-23 2005-03-23 Road based vehicle speed sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0505927A GB2425421A (en) 2005-03-23 2005-03-23 Road based vehicle speed sensor

Publications (2)

Publication Number Publication Date
GB0505927D0 GB0505927D0 (en) 2005-04-27
GB2425421A true GB2425421A (en) 2006-10-25

Family

ID=34531706

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0505927A Withdrawn GB2425421A (en) 2005-03-23 2005-03-23 Road based vehicle speed sensor

Country Status (1)

Country Link
GB (1) GB2425421A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2423969R1 (en) * 2012-03-23 2013-10-30 Torrens Jose Maria Bastus ALARM GENERATION METHOD AND APPLIANCE BASED ON THE MEASUREMENT OF VEHICLE DEACELERATION WHEN APPROACHING A DANGER AREA.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3707717A (en) * 1971-06-25 1972-12-26 Gen Signal Corp Boat berthing monitor incorporating sonar and doppler radar techniques
FR2601144A1 (en) * 1986-04-09 1988-01-08 Semeru DEVICE FOR DISPLAYING ON THE ROAD OF THE INSTANTANEOUS SPEED OF A VEHICLE IN A DETERMINED AREA
US4985705A (en) * 1988-03-26 1991-01-15 Telefunken Systemtechnik Gmbh Method and apparatus for compiling and evaluating local traffic data
US5231393A (en) * 1988-10-18 1993-07-27 P.A.T., Co. Mobile speed awareness device
FR2750522A1 (en) * 1996-07-01 1998-01-02 Grand Clement Jean Luc Road speed warning display mechanism for alerting car drivers exceeding speed limit
US20010011957A1 (en) * 1997-09-18 2001-08-09 Thomas E Mitchell Violation alert speed display
DE202005002518U1 (en) * 2005-02-17 2005-06-02 Rtb Gmbh & Co. Kg Speed-controlled visual signaling device for traffic routes has light signal sources arranged along road whose light color can be controlled depending on detected speed of vehicle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3707717A (en) * 1971-06-25 1972-12-26 Gen Signal Corp Boat berthing monitor incorporating sonar and doppler radar techniques
FR2601144A1 (en) * 1986-04-09 1988-01-08 Semeru DEVICE FOR DISPLAYING ON THE ROAD OF THE INSTANTANEOUS SPEED OF A VEHICLE IN A DETERMINED AREA
US4985705A (en) * 1988-03-26 1991-01-15 Telefunken Systemtechnik Gmbh Method and apparatus for compiling and evaluating local traffic data
US5231393A (en) * 1988-10-18 1993-07-27 P.A.T., Co. Mobile speed awareness device
FR2750522A1 (en) * 1996-07-01 1998-01-02 Grand Clement Jean Luc Road speed warning display mechanism for alerting car drivers exceeding speed limit
US20010011957A1 (en) * 1997-09-18 2001-08-09 Thomas E Mitchell Violation alert speed display
DE202005002518U1 (en) * 2005-02-17 2005-06-02 Rtb Gmbh & Co. Kg Speed-controlled visual signaling device for traffic routes has light signal sources arranged along road whose light color can be controlled depending on detected speed of vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2423969R1 (en) * 2012-03-23 2013-10-30 Torrens Jose Maria Bastus ALARM GENERATION METHOD AND APPLIANCE BASED ON THE MEASUREMENT OF VEHICLE DEACELERATION WHEN APPROACHING A DANGER AREA.

Also Published As

Publication number Publication date
GB0505927D0 (en) 2005-04-27

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)