CA2368570A1 - Loop sensing apparatus for traffic detection - Google Patents

Loop sensing apparatus for traffic detection Download PDF

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Publication number
CA2368570A1
CA2368570A1 CA002368570A CA2368570A CA2368570A1 CA 2368570 A1 CA2368570 A1 CA 2368570A1 CA 002368570 A CA002368570 A CA 002368570A CA 2368570 A CA2368570 A CA 2368570A CA 2368570 A1 CA2368570 A1 CA 2368570A1
Authority
CA
Canada
Prior art keywords
loop
sensing apparatus
region
traffic detection
polarity
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
CA002368570A
Other languages
French (fr)
Other versions
CA2368570C (en
Inventor
Robert Harper Lees
Richard Andrew Lees
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.)
Neology Inc
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
Publication of CA2368570A1 publication Critical patent/CA2368570A1/en
Application granted granted Critical
Publication of CA2368570C publication Critical patent/CA2368570C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Abstract

Loop sensing apparatus for detecting vehicles travelling along a lane of a roadway comprises an outer loop producing a region of magnetic field with the same polarity and an inner loop sized to fit within this region of constant polarity. The inner loop provides two regions of opposite polarity, so that field produced by the outer loop has a null effect on the inner loop. Detection circuitry energises both the outer and inner loops individually for separate detection of vehicles passing over the loops.
CA002368570A 1999-03-31 2000-03-30 Loop sensing apparatus for traffic detection Expired - Lifetime CA2368570C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9907424A GB2348501B (en) 1999-03-31 1999-03-31 Loop sensing apparatus for traffic detection
GB9907424.7 1999-03-31
PCT/GB2000/001221 WO2000058927A1 (en) 1999-03-31 2000-03-30 Loop sensing apparatus for traffic detection

Publications (2)

Publication Number Publication Date
CA2368570A1 true CA2368570A1 (en) 2000-10-05
CA2368570C CA2368570C (en) 2007-11-27

Family

ID=10850721

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002368570A Expired - Lifetime CA2368570C (en) 1999-03-31 2000-03-30 Loop sensing apparatus for traffic detection

Country Status (12)

Country Link
US (1) US6483443B1 (en)
EP (1) EP1166250B1 (en)
AT (1) ATE233931T1 (en)
AU (1) AU768119B2 (en)
BR (1) BR0009464B1 (en)
CA (1) CA2368570C (en)
DE (1) DE60001543T2 (en)
ES (1) ES2193058T3 (en)
GB (1) GB2348501B (en)
MX (1) MXPA01009928A (en)
PT (1) PT1166250E (en)
WO (1) WO2000058927A1 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003002945A2 (en) * 2001-06-29 2003-01-09 Inductive Signature Technologies, Inc. Inductive sensor apparatus and method for deploying
US7734500B1 (en) 2001-10-17 2010-06-08 United Toll Systems, Inc. Multiple RF read zone system
US8331621B1 (en) 2001-10-17 2012-12-11 United Toll Systems, Inc. Vehicle image capture system
US7764197B2 (en) 2001-10-17 2010-07-27 United Toll Systems, Inc. System and synchronization process for inductive loops in a multilane environment
US6864804B1 (en) * 2001-10-17 2005-03-08 Jim Allen Ferromagnetic loop
US7725348B1 (en) * 2001-10-17 2010-05-25 United Toll Systems, Inc. Multilane vehicle information capture system
US7136828B1 (en) 2001-10-17 2006-11-14 Jim Allen Intelligent vehicle identification system
FR2838566B1 (en) * 2002-04-10 2006-04-28 France Etat Ponts Chaussees TRANSPONDER DEVICE FOR DIALOGUEING WITH A MOBILE ANTENNA MOUNTED ON A VEHICLE
US6999886B2 (en) * 2002-09-17 2006-02-14 Inductive Signature Technologies, Inc. Vehicle speed estimation using inductive vehicle detection systems
WO2005017853A1 (en) * 2003-08-13 2005-02-24 Petrus Paulus Haasbroek Classification of vehicles
US7092815B2 (en) * 2003-12-17 2006-08-15 Vrbia, Inc. Traffic control systems for vehicle spacing to dissipate traffic gridlock
KR100849988B1 (en) 2006-05-11 2008-08-04 이정준 Traffic Information Detection System and Loop Detection Apparatus used therein
US7952021B2 (en) 2007-05-03 2011-05-31 United Toll Systems, Inc. System and method for loop detector installation
KR100885530B1 (en) * 2008-05-27 2009-02-26 이정준 The combined loop type auto-mobile sensor using loop coil and parking information system the same
EP2324469B1 (en) 2008-07-18 2017-08-23 Sensys Networks, Inc. Method and apparatus generating and/or using estimates of arterial vehicular movement
WO2012015453A1 (en) * 2010-07-29 2012-02-02 Sensys Networks, Inc. Sensor nodes acting as inductive loops for traffic sensing
US8386156B2 (en) * 2010-08-02 2013-02-26 Siemens Industry, Inc. System and method for lane-specific vehicle detection and control
US8976041B2 (en) * 2010-09-30 2015-03-10 Siemens Industry, Inc. Traffic analysis using wireless receivers and vehicle detection devices
US8990032B2 (en) 2010-12-30 2015-03-24 Sensys Networks, Inc. In-pavement wireless vibration sensor nodes, networks and systems
US8855902B2 (en) 2013-02-28 2014-10-07 Trafficware Group, Inc. Wireless vehicle detection system and associated methods having enhanced response time
GB2536028B (en) * 2015-03-05 2018-05-09 Red Fox Id Ltd Vehicle detection apparatus with inductive loops
US10433136B2 (en) 2017-06-28 2019-10-01 At&T Intellectual Property I, L.P. Wireless network enhancements via inductance loops as antennas

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GB410527A (en) * 1932-11-24 1934-05-24 Automatic Electric Co Ltd Improvements in or relating to apparatus for signalling the passage of vehicles
US2525824A (en) 1947-09-12 1950-10-17 Eastern Ind Inc Traffic counting apparatus
GB673505A (en) * 1949-05-23 1952-06-04 Ericsson Telefon Ab L M Vehicle detector
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US3312935A (en) 1964-04-21 1967-04-04 Sangamo Electric Co Traffic loop detector
FR1555538A (en) 1967-06-28 1969-01-31
GB1245360A (en) * 1968-11-29 1971-09-08 Omron Tateisi Electronics Co Detector apparatus for obtaining road traffic information
JPS4822396B1 (en) * 1969-02-19 1973-07-05
US3697996A (en) * 1969-07-11 1972-10-10 Minnesota Mining & Mfg Electromagnetic field producing apparatus and method for sequentially producing a plurality of fields
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DE2232335C2 (en) 1972-06-28 1984-09-06 Signalbau Huber - Designa GmbH, 8000 München Inductive loops for detection of passing vehicles - are joined to make figure=of=eight so that detector is resistant to interference
FR2254842A1 (en) 1973-12-17 1975-07-11 Charre Jean Louis Electronic traffic detector laid across roadway - is easy to install and well protected by flexible PVC type strips
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DE3009679A1 (en) 1980-03-11 1981-09-24 Elmeg Elektro-Mechanik Gmbh, 3150 Peine METHOD FOR DIFFERENTIATING VEHICLES OF DIFFERENT TYPE IN ROAD TRAFFIC
DE3100724A1 (en) 1981-01-13 1982-07-29 Scheidt & Bachmann GmbH, 4050 Mönchengladbach Method for monitoring the presence of vehicles within certain traffic areas
US4430636A (en) 1981-06-29 1984-02-07 Bruce Robert L Loop detector for traffic signal control
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US4945356A (en) 1983-06-09 1990-07-31 Minnesota Mining And Manufacturing Company Strip material for and a surface mounted inductive loop
FR2549625A1 (en) 1983-07-21 1985-01-25 Electronique Controle Mesure Device for classifying vehicles travelling on a roadway into categories.
GB8421715D0 (en) 1984-08-28 1984-10-03 Buttemer D A Loop detector
DE3632316A1 (en) * 1986-09-23 1988-03-31 Siemens Ag Vehicle detector
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DE4231881A1 (en) * 1992-09-24 1994-03-31 Ant Nachrichtentech Traffic flow determining system using inductive sensing - has three inductive loops with AC generator input producing output detected when vehicle passes.
US6337640B2 (en) * 1999-03-31 2002-01-08 Diamond Consulting Services Limited Inductive loop sensor for traffic detection, and traffic monitoring apparatus and method using such a loop sensor

Also Published As

Publication number Publication date
DE60001543D1 (en) 2003-04-10
ATE233931T1 (en) 2003-03-15
CA2368570C (en) 2007-11-27
US6483443B1 (en) 2002-11-19
BR0009464A (en) 2002-01-08
PT1166250E (en) 2003-07-31
EP1166250A1 (en) 2002-01-02
GB2348501B (en) 2003-07-30
AU3567800A (en) 2000-10-16
BR0009464B1 (en) 2013-04-30
DE60001543T2 (en) 2004-01-15
GB9907424D0 (en) 1999-05-26
GB2348501A (en) 2000-10-04
MXPA01009928A (en) 2003-07-14
ES2193058T3 (en) 2003-11-01
AU768119B2 (en) 2003-12-04
WO2000058927A1 (en) 2000-10-05
EP1166250B1 (en) 2003-03-05

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Effective date: 20200330