EP0419273A3 - Improvements in inductive loop vehicle detectors - Google Patents

Improvements in inductive loop vehicle detectors Download PDF

Info

Publication number
EP0419273A3
EP0419273A3 EP19900310333 EP90310333A EP0419273A3 EP 0419273 A3 EP0419273 A3 EP 0419273A3 EP 19900310333 EP19900310333 EP 19900310333 EP 90310333 A EP90310333 A EP 90310333A EP 0419273 A3 EP0419273 A3 EP 0419273A3
Authority
EP
European Patent Office
Prior art keywords
inductive loop
vehicle detectors
loop vehicle
detectors
inductive
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
EP19900310333
Other versions
EP0419273A2 (en
EP0419273B1 (en
Inventor
Eric Olsson
Brian Jefferis
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.)
Sarasota Automation Ltd
Original Assignee
Sarasota Automation 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 GB898921365A external-priority patent/GB8921365D0/en
Priority claimed from GB898923845A external-priority patent/GB8923845D0/en
Application filed by Sarasota Automation Ltd filed Critical Sarasota Automation Ltd
Publication of EP0419273A2 publication Critical patent/EP0419273A2/en
Publication of EP0419273A3 publication Critical patent/EP0419273A3/en
Application granted granted Critical
Publication of EP0419273B1 publication Critical patent/EP0419273B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • G08G1/042—Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
EP19900310333 1989-09-21 1990-09-21 Improvements in inductive loop vehicle detectors Expired - Lifetime EP0419273B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8921365 1989-09-21
GB898921365A GB8921365D0 (en) 1989-09-21 1989-09-21 Improvements in inductive loop vehicle detectors
GB8923845 1989-10-23
GB898923845A GB8923845D0 (en) 1989-10-23 1989-10-23 Improvements in inductive loop vehicle detectors

Publications (3)

Publication Number Publication Date
EP0419273A2 EP0419273A2 (en) 1991-03-27
EP0419273A3 true EP0419273A3 (en) 1992-09-23
EP0419273B1 EP0419273B1 (en) 1994-11-30

Family

ID=26295950

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900310333 Expired - Lifetime EP0419273B1 (en) 1989-09-21 1990-09-21 Improvements in inductive loop vehicle detectors

Country Status (4)

Country Link
EP (1) EP0419273B1 (en)
DE (1) DE69014518T2 (en)
ES (1) ES2066144T3 (en)
HK (1) HK1007356A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7324014B2 (en) 2003-03-11 2008-01-29 The Chamberlain Group, Inc. Inductive loop detector with automatic frequency change
ES2443081B1 (en) * 2012-08-17 2015-01-29 Universidade Da Coruña Automatic vehicle identification by RFID with Inductive Loop Detector

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943339A (en) * 1974-04-29 1976-03-09 Canoga Controls Corporation Inductive loop detector system
FR2553523A1 (en) * 1983-10-17 1985-04-19 Raibaud Guy Inductive anti-theft alarm working by detection of resonant circuits
US4668951A (en) * 1982-08-13 1987-05-26 Sarasota Automation Limited Inductive loop vehicle detector
US4680717A (en) * 1984-09-17 1987-07-14 Indicator Controls Corporation Microprocessor controlled loop detector system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943339A (en) * 1974-04-29 1976-03-09 Canoga Controls Corporation Inductive loop detector system
US4668951A (en) * 1982-08-13 1987-05-26 Sarasota Automation Limited Inductive loop vehicle detector
FR2553523A1 (en) * 1983-10-17 1985-04-19 Raibaud Guy Inductive anti-theft alarm working by detection of resonant circuits
US4680717A (en) * 1984-09-17 1987-07-14 Indicator Controls Corporation Microprocessor controlled loop detector system

Also Published As

Publication number Publication date
EP0419273A2 (en) 1991-03-27
HK1007356A1 (en) 1999-04-09
DE69014518D1 (en) 1995-01-12
ES2066144T3 (en) 1995-03-01
EP0419273B1 (en) 1994-11-30
DE69014518T2 (en) 1995-04-13

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