CA1020252A - Systeme numerique de boucle de detection - Google Patents
Systeme numerique de boucle de detectionInfo
- Publication number
- CA1020252A CA1020252A CA196,728A CA196728A CA1020252A CA 1020252 A CA1020252 A CA 1020252A CA 196728 A CA196728 A CA 196728A CA 1020252 A CA1020252 A CA 1020252A
- Authority
- CA
- Canada
- Prior art keywords
- detector system
- digital loop
- loop detector
- digital
- loop
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/101—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil
-
- 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)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Geophysics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Traffic Control Systems (AREA)
- Geophysics And Detection Of Objects (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US377544A US3868626A (en) | 1973-07-09 | 1973-07-09 | Digital loop detector system |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1020252A true CA1020252A (fr) | 1977-11-01 |
Family
ID=23489544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA196,728A Expired CA1020252A (fr) | 1973-07-09 | 1974-04-03 | Systeme numerique de boucle de detection |
Country Status (4)
Country | Link |
---|---|
US (1) | US3868626A (fr) |
JP (1) | JPS5050062A (fr) |
CA (1) | CA1020252A (fr) |
DE (1) | DE2432209B2 (fr) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3989932A (en) * | 1974-02-21 | 1976-11-02 | Canoga Controls Corporation | Inductive loop vehicle detector |
US3943339A (en) * | 1974-04-29 | 1976-03-09 | Canoga Controls Corporation | Inductive loop detector system |
US4075563A (en) * | 1976-05-13 | 1978-02-21 | Gulf & Western Industries, Inc. | Digital loop detector with improved detection control |
US4131848A (en) * | 1976-12-03 | 1978-12-26 | Gulf & Western Industries, Inc. | Digital loop detector with automatic tuning |
US4185265A (en) * | 1977-06-09 | 1980-01-22 | Cincinnati Electronics Corporation | Vehicular magnetic coded signalling apparatus |
JPS5468091A (en) * | 1977-11-10 | 1979-05-31 | Kouji Tamura | Device for measuring motion of living organ |
DE2832251A1 (de) * | 1978-07-22 | 1980-02-21 | Foerster Friedrich Dr | Verfahren und anordnung zum aufsuchen ferromagnetischer koerper |
DE2929494B1 (de) * | 1979-07-20 | 1980-07-17 | Siemens Ag | Verfahren und Schaltungsanordnung zur Ermittlung des Einfahrens und/oder Ausfahrens eines Fahrzeugs,insbesondere eines Strassenverkehrsfahrzeugs,in einen bzw.aus einem festgelegten UEberwachungsbereich |
GB2065946B (en) * | 1979-11-21 | 1983-08-24 | Redland Automation Ltd | Vehicle detiction installation |
DE3100724A1 (de) * | 1981-01-13 | 1982-07-29 | Scheidt & Bachmann GmbH, 4050 Mönchengladbach | Verfahren zur ueberwachung des vorhandenseins von fahrzeugen innerhalb bestimmter verkehrsflaechen |
DE3111684A1 (de) * | 1981-03-25 | 1982-10-14 | FHN-Verbindungstechnik GmbH, 8501 Eckental | "elektronische steuerschaltung fuer den antriebsmotor eines versenkbaren autofensters" |
US4416365A (en) * | 1981-08-21 | 1983-11-22 | Mars, Inc. | Coin examination apparatus employing an RL relaxation oscillator |
US4472706A (en) * | 1981-11-30 | 1984-09-18 | Hodge Patrick M | Vehicle presence loop detector |
US4529982A (en) * | 1982-06-03 | 1985-07-16 | Flintab Ab | Vehicle locating system |
DE3374471D1 (en) * | 1982-08-13 | 1987-12-23 | Sarasota Automation | Inductive loop vehicle detector |
FR2568380B1 (fr) * | 1984-07-30 | 1987-01-30 | Petercem Sa | Capteur numerique differentiel de position |
US5028921A (en) * | 1987-07-27 | 1991-07-02 | Detector Systems, Inc. | Vehicle detector method and system |
EP0301812A3 (fr) * | 1987-07-27 | 1989-07-12 | Detector Systems Inc. | Système et procédé de détection de véhicule |
US5017910A (en) * | 1989-08-24 | 1991-05-21 | Deere & Company | Intermittent fault detection system |
US4975968A (en) * | 1989-10-27 | 1990-12-04 | Spatial Dynamics, Ltd. | Timed dielectrometry surveillance method and apparatus |
CA2072900A1 (fr) * | 1991-07-12 | 1993-01-13 | Earl B. Hoekman | Detecteur de vehicule avec reglage automatique de la sensibilite |
US5455768A (en) * | 1992-11-06 | 1995-10-03 | Safetran Traffic Systems, Inc. | System for determining vehicle speed and presence |
JP2741832B2 (ja) * | 1993-10-07 | 1998-04-22 | 株式会社京三製作所 | 車両検出装置 |
US5751225A (en) * | 1994-09-12 | 1998-05-12 | Minnesota Mining And Manufacturing Company | Vehicle detector system with presence mode counting |
US5523753A (en) * | 1994-09-12 | 1996-06-04 | Minnesota Mining And Manufacturing Company | Vehicle detector system with periodic source filtering |
US5844502A (en) * | 1997-07-22 | 1998-12-01 | Elite Access Systems, Inc. | Temperature-compensated object sensing device and method therefor |
FR2877520A1 (fr) * | 2004-11-04 | 2006-05-05 | St Microelectronics Sa | Procede et dispositif de generation d'horloge de decodage a partir d'un signal asynchrone de donnees base sur la norme epc global |
CN1297947C (zh) * | 2004-12-29 | 2007-01-31 | 天津大学 | 无线车辆检测传感器 |
CN1300749C (zh) * | 2004-12-29 | 2007-02-14 | 天津大学 | 有线车辆检测传感器 |
US7373565B2 (en) * | 2005-08-23 | 2008-05-13 | Hewlett-Packard Development Company, L.P. | Start/stop circuit for performance counter |
KR101066606B1 (ko) * | 2009-10-14 | 2011-09-22 | 모루인벤 주식회사 | 저전력동작형 루프식 차량검지장치 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3541347A (en) * | 1968-08-22 | 1970-11-17 | Howard W Carmack | Vehicle detector and pulse generator therefor |
-
1973
- 1973-07-09 US US377544A patent/US3868626A/en not_active Expired - Lifetime
-
1974
- 1974-04-03 CA CA196,728A patent/CA1020252A/fr not_active Expired
- 1974-07-05 DE DE2432209A patent/DE2432209B2/de not_active Withdrawn
- 1974-07-09 JP JP49077921A patent/JPS5050062A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2432209A1 (de) | 1975-02-06 |
US3868626A (en) | 1975-02-25 |
DE2432209B2 (de) | 1979-04-05 |
AU7046174A (en) | 1976-01-08 |
JPS5050062A (fr) | 1975-05-06 |
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