GB1448967A - Detector apparatus - Google Patents

Detector apparatus

Info

Publication number
GB1448967A
GB1448967A GB740675A GB740675A GB1448967A GB 1448967 A GB1448967 A GB 1448967A GB 740675 A GB740675 A GB 740675A GB 740675 A GB740675 A GB 740675A GB 1448967 A GB1448967 A GB 1448967A
Authority
GB
United Kingdom
Prior art keywords
detector apparatus
detector
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
Application number
GB740675A
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.)
CANOGA CONTROLS CORP
Original Assignee
CANOGA CONTROLS CORP
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 CANOGA CONTROLS CORP filed Critical CANOGA CONTROLS CORP
Publication of GB1448967A publication Critical patent/GB1448967A/en
Expired 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
    • G01V3/101—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)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (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)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Geophysics And Detection Of Objects (AREA)
GB740675A 1974-02-21 1975-02-21 Detector apparatus Expired GB1448967A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US44451974A 1974-02-21 1974-02-21

Publications (1)

Publication Number Publication Date
GB1448967A true GB1448967A (en) 1976-09-08

Family

ID=23765249

Family Applications (1)

Application Number Title Priority Date Filing Date
GB740675A Expired GB1448967A (en) 1974-02-21 1975-02-21 Detector apparatus

Country Status (4)

Country Link
JP (1) JPS50124682A (en)
CA (1) CA1047623A (en)
DE (1) DE2507632B2 (en)
GB (1) GB1448967A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131994A (en) * 1982-12-02 1984-06-27 Sarasota Automation Inductive loop sensors
GB2165651A (en) * 1984-09-24 1986-04-16 Electromatic Inductive loop detector
CN116203315A (en) * 2023-05-06 2023-06-02 国仪量子(合肥)技术有限公司 Frequency measurement method and device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL184645C (en) * 1979-08-09 1989-09-18 Philips Nv METHOD FOR DETERMINING THE SPEED OF A VEHICLE.
FR2538915B1 (en) * 1983-01-03 1985-10-25 Bernard Jacques DEVICE AND METHOD FOR DETECTION OF METAL OBJECTS SUCH AS FIREARMS, AND LOCAL ACCESS SAS TO PROTECT AGAINST AGGRESSIONS

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131994A (en) * 1982-12-02 1984-06-27 Sarasota Automation Inductive loop sensors
GB2165651A (en) * 1984-09-24 1986-04-16 Electromatic Inductive loop detector
AU585894B2 (en) * 1984-09-24 1989-06-29 Electromatic (Proprietary) Limited Inductive loop detector
CN116203315A (en) * 2023-05-06 2023-06-02 国仪量子(合肥)技术有限公司 Frequency measurement method and device

Also Published As

Publication number Publication date
DE2507632B2 (en) 1976-09-16
DE2507632A1 (en) 1975-08-28
CA1047623A (en) 1979-01-30
JPS50124682A (en) 1975-09-30
AU7767175A (en) 1976-07-29

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19950220