CH481439A - Circuit arrangement for measuring changes in inductance on loop detectors - Google Patents

Circuit arrangement for measuring changes in inductance on loop detectors

Info

Publication number
CH481439A
CH481439A CH1420768A CH1420768A CH481439A CH 481439 A CH481439 A CH 481439A CH 1420768 A CH1420768 A CH 1420768A CH 1420768 A CH1420768 A CH 1420768A CH 481439 A CH481439 A CH 481439A
Authority
CH
Switzerland
Prior art keywords
inductance
circuit arrangement
measuring changes
loop detectors
detectors
Prior art date
Application number
CH1420768A
Other languages
German (de)
Inventor
Thilo Peer Ing Dr
Peter Dipl Ing Lingenfelser
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of CH481439A publication Critical patent/CH481439A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G01R27/2611—Measuring inductance
    • 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)
CH1420768A 1967-09-25 1968-09-23 Circuit arrangement for measuring changes in inductance on loop detectors CH481439A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0111988 1967-09-25

Publications (1)

Publication Number Publication Date
CH481439A true CH481439A (en) 1969-11-15

Family

ID=7531364

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1420768A CH481439A (en) 1967-09-25 1968-09-23 Circuit arrangement for measuring changes in inductance on loop detectors

Country Status (3)

Country Link
CH (1) CH481439A (en)
GB (1) GB1209985A (en)
NL (1) NL151797B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0106843A1 (en) * 1982-04-16 1984-05-02 Respitrace Corporation Imrpoved inductance to frequency converter circuit
DE2817670C2 (en) * 1978-04-19 1986-04-17 Elmeg Elektro-Mechanik Gmbh, 3150 Peine Induction loop detector for traffic counting devices

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685013A (en) * 1970-08-14 1972-08-15 Joseph L Brickner Self-adjusting vehicle detector system
GB1588531A (en) * 1977-01-11 1981-04-23 Redland Automation Ltd Vehicle detection

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2817670C2 (en) * 1978-04-19 1986-04-17 Elmeg Elektro-Mechanik Gmbh, 3150 Peine Induction loop detector for traffic counting devices
EP0106843A1 (en) * 1982-04-16 1984-05-02 Respitrace Corporation Imrpoved inductance to frequency converter circuit
EP0106843A4 (en) * 1982-04-16 1984-07-04 Herman Lanier Watson Imrpoved inductance to frequency converter circuit.

Also Published As

Publication number Publication date
NL6813629A (en) 1969-03-27
GB1209985A (en) 1970-10-28
NL151797B (en) 1976-12-15

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Legal Events

Date Code Title Description
PL Patent ceased