FR2389954A1 - - Google Patents

Info

Publication number
FR2389954A1
FR2389954A1 FR7813159A FR7813159A FR2389954A1 FR 2389954 A1 FR2389954 A1 FR 2389954A1 FR 7813159 A FR7813159 A FR 7813159A FR 7813159 A FR7813159 A FR 7813159A FR 2389954 A1 FR2389954 A1 FR 2389954A1
Authority
FR
France
Prior art keywords
envelope
vehicle
received signal
signal
sample voltage
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Withdrawn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
FR7813159A
Other languages
English (en)
French (fr)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2389954A1 publication Critical patent/FR2389954A1/fr
Withdrawn legal-status Critical Current

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
    • G01V3/104—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 using several coupled or uncoupled coils
    • G01V3/105—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 using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops
    • 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
    • G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Electromagnetism (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Traffic Control Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
FR7813159A 1977-05-05 1978-05-03 Withdrawn FR2389954A1 (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPD000177 1977-05-05

Publications (1)

Publication Number Publication Date
FR2389954A1 true FR2389954A1 (enrdf_load_stackoverflow) 1978-12-01

Family

ID=3766966

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7813159A Withdrawn FR2389954A1 (enrdf_load_stackoverflow) 1977-05-05 1978-05-03

Country Status (4)

Country Link
JP (1) JPS5488799A (enrdf_load_stackoverflow)
DE (1) DE2819565A1 (enrdf_load_stackoverflow)
FR (1) FR2389954A1 (enrdf_load_stackoverflow)
GB (1) GB1573673A (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1588570A (en) * 1977-11-09 1981-04-23 Henderson Group Ltd P C Door hinge mechanism
JPS61243598A (ja) * 1985-04-19 1986-10-29 オムロン株式会社 車両感知器
JPS61243597A (ja) * 1985-04-19 1986-10-29 オムロン株式会社 車両感知器
JPS61282999A (ja) * 1985-06-07 1986-12-13 オムロン株式会社 駐車車両感知装置
JPH0124682Y2 (enrdf_load_stackoverflow) * 1986-12-26 1989-07-26

Also Published As

Publication number Publication date
JPS5488799A (ja) 1979-07-14
GB1573673A (en) 1980-08-28
DE2819565A1 (de) 1978-11-23

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Legal Events

Date Code Title Description
ST Notification of lapse