GB1289208A - - Google Patents

Info

Publication number
GB1289208A
GB1289208A GB1289208DA GB1289208A GB 1289208 A GB1289208 A GB 1289208A GB 1289208D A GB1289208D A GB 1289208DA GB 1289208 A GB1289208 A GB 1289208A
Authority
GB
United Kingdom
Prior art keywords
amplifier
output
oscillator
circuit
relay
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
Other languages
English (en)
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 filed Critical
Publication of GB1289208A publication Critical patent/GB1289208A/en
Expired legal-status Critical Current

Links

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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
GB1289208D 1969-10-06 1970-10-06 Expired GB1289208A (enrdf_load_stackoverflow)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9450269 1969-10-06
JP10503769 1969-11-07

Publications (1)

Publication Number Publication Date
GB1289208A true GB1289208A (enrdf_load_stackoverflow) 1972-09-13

Family

ID=26435783

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1289208D Expired GB1289208A (enrdf_load_stackoverflow) 1969-10-06 1970-10-06

Country Status (3)

Country Link
US (1) US3688308A (enrdf_load_stackoverflow)
DE (1) DE2049086A1 (enrdf_load_stackoverflow)
GB (1) GB1289208A (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2340461A1 (de) * 1973-08-09 1975-02-20 Siemens Ag Abtasteinrichtung
FR2693301B1 (fr) * 1992-07-06 1994-08-05 Est Centre Tech Equip Dispositif pour detecter une ou plusieurs roues d'un engin mobile roulant.
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
GB2348501B (en) 1999-03-31 2003-07-30 Diamond Consulting Services Lt Loop sensing apparatus for traffic detection
GB2368959A (en) * 2000-11-09 2002-05-15 D Systems Ltd Ag Energy management system for vehicle monitoring equipment

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3451041A (en) * 1966-04-04 1969-06-17 Singer General Precision Vehicle presence detector system

Also Published As

Publication number Publication date
DE2049086A1 (de) 1971-04-22
US3688308A (en) 1972-08-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PLNP Patent lapsed through nonpayment of renewal fees