GB2212022B - Improvements relating to test systems for vehicle detectors - Google Patents

Improvements relating to test systems for vehicle detectors

Info

Publication number
GB2212022B
GB2212022B GB8825873A GB8825873A GB2212022B GB 2212022 B GB2212022 B GB 2212022B GB 8825873 A GB8825873 A GB 8825873A GB 8825873 A GB8825873 A GB 8825873A GB 2212022 B GB2212022 B GB 2212022B
Authority
GB
United Kingdom
Prior art keywords
improvements relating
test systems
vehicle detectors
detectors
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.)
Expired - Fee Related
Application number
GB8825873A
Other versions
GB2212022A (en
GB8825873D0 (en
Inventor
Peter John Hatherell
Donald Campbell
Lawrence John Lux
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.)
LUX TRAFFIC CONTROLS Ltd
Original Assignee
LUX TRAFFIC CONTROLS 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
Priority claimed from GB878725843A external-priority patent/GB8725843D0/en
Priority claimed from GB888800308A external-priority patent/GB8800308D0/en
Application filed by LUX TRAFFIC CONTROLS Ltd filed Critical LUX TRAFFIC CONTROLS Ltd
Publication of GB8825873D0 publication Critical patent/GB8825873D0/en
Publication of GB2212022A publication Critical patent/GB2212022A/en
Application granted granted Critical
Publication of GB2212022B publication Critical patent/GB2212022B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/07—Controlling traffic signals
    • G08G1/08—Controlling traffic signals according to detected number or speed of vehicles
    • 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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/56—Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40—Means for monitoring or calibrating
    • G01S7/4052—Means for monitoring or calibrating by simulation of echoes
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40—Means for monitoring or calibrating
    • G01S7/4052—Means for monitoring or calibrating by simulation of echoes
    • G01S7/406—Means for monitoring or calibrating by simulation of echoes using internally generated reference signals, e.g. via delay line, via RF or IF signal injection or via integrated reference reflector or transponder
GB8825873A 1987-11-04 1988-11-04 Improvements relating to test systems for vehicle detectors Expired - Fee Related GB2212022B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB878725843A GB8725843D0 (en) 1987-11-04 1987-11-04 Traffic lights
GB888800308A GB8800308D0 (en) 1988-01-07 1988-01-07 Improvements relating to traffic lights

Publications (3)

Publication Number Publication Date
GB8825873D0 GB8825873D0 (en) 1988-12-07
GB2212022A GB2212022A (en) 1989-07-12
GB2212022B true GB2212022B (en) 1991-12-18

Family

ID=26292991

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8825873A Expired - Fee Related GB2212022B (en) 1987-11-04 1988-11-04 Improvements relating to test systems for vehicle detectors

Country Status (1)

Country Link
GB (1) GB2212022B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2383486B (en) * 2001-12-19 2005-02-16 Microwave Solutions Ltd Detector device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1315533A (en) * 1970-06-24 1973-05-02 Pye Ltd Vehicle monitoring radar apparatus
GB2003358A (en) * 1977-08-29 1979-03-07 Nissan Motor Testing circuit for radar-operated vehicle safety assurance systems

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1315533A (en) * 1970-06-24 1973-05-02 Pye Ltd Vehicle monitoring radar apparatus
GB2003358A (en) * 1977-08-29 1979-03-07 Nissan Motor Testing circuit for radar-operated vehicle safety assurance systems

Also Published As

Publication number Publication date
GB2212022A (en) 1989-07-12
GB8825873D0 (en) 1988-12-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20071104