GB1330769A - Information detection - Google Patents

Information detection

Info

Publication number
GB1330769A
GB1330769A GB2157071A GB2157071A GB1330769A GB 1330769 A GB1330769 A GB 1330769A GB 2157071 A GB2157071 A GB 2157071A GB 2157071 A GB2157071 A GB 2157071A GB 1330769 A GB1330769 A GB 1330769A
Authority
GB
United Kingdom
Prior art keywords
line
resonance
frequency
circuits
sweep signal
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
GB2157071A
Other languages
English (en)
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.)
Hitachi Ltd
Tokyo Electric Power Co Holdings Inc
Original Assignee
Tokyo Electric Power Co Inc
Hitachi Ltd
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 Tokyo Electric Power Co Inc, Hitachi Ltd filed Critical Tokyo Electric Power Co Inc
Publication of GB1330769A publication Critical patent/GB1330769A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H04Q9/08—Calling by using continuous AC

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Selective Calling Equipment (AREA)
GB2157071A 1970-04-03 1971-04-19 Information detection Expired GB1330769A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45028451A JPS5129414B1 (enExample) 1970-04-03 1970-04-03

Publications (1)

Publication Number Publication Date
GB1330769A true GB1330769A (en) 1973-09-19

Family

ID=12249016

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2157071A Expired GB1330769A (en) 1970-04-03 1971-04-19 Information detection

Country Status (6)

Country Link
US (1) US3719928A (enExample)
JP (1) JPS5129414B1 (enExample)
CH (1) CH536533A (enExample)
DE (1) DE2109036C3 (enExample)
FR (1) FR2092377A5 (enExample)
GB (1) GB1330769A (enExample)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027286A (en) * 1976-04-23 1977-05-31 Trw Inc. Multiplexed data monitoring system
JPS58179034A (ja) * 1982-04-14 1983-10-20 Sharp Corp デ−タ伝送システム
ES8701440A1 (es) * 1984-02-09 1986-11-16 Babcock & Wilcox Co Un multiplexor pasivo para procesar un apluralidad de condiciones
DE487995T1 (de) * 1990-11-30 1992-10-15 Rockwell International Corp., Pittsburg, Pa. Ein system zur fernsteuerung von stellgliedern und schaltern durch einen mikroprozessor unter verwendung eines dreikabelnetzes.
US5986574A (en) 1997-10-16 1999-11-16 Peco Energy Company System and method for communication between remote locations
US20020120569A1 (en) * 1997-10-16 2002-08-29 Day Mark E. System and method for communication between remote locations
US6480510B1 (en) 1998-07-28 2002-11-12 Serconet Ltd. Local area network of serial intelligent cells
US6842459B1 (en) 2000-04-19 2005-01-11 Serconet Ltd. Network combining wired and non-wired segments
IL154921A (en) * 2003-03-13 2011-02-28 Mosaid Technologies Inc A telephone system that includes many separate sources and accessories for it
KR100634524B1 (ko) * 2004-11-08 2006-10-16 삼성전자주식회사 체지방 측정 장치 및 방법
JP5545258B2 (ja) * 2011-04-13 2014-07-09 株式会社オートネットワーク技術研究所 温度測定装置
WO2020148827A1 (ja) * 2019-01-16 2020-07-23 Ｐｏｓｈ Ｗｅｌｌｎｅｓｓ Ｌａｂｏｒａｔｏｒｙ株式会社 検出装置、状態特定装置、および測定方法
US10908304B2 (en) * 2019-05-15 2021-02-02 Honeywell International Inc. Passive smart sensor detection system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2154694A (en) * 1937-09-10 1939-04-18 Westinghouse Electric & Mfg Co Communication system
US3164771A (en) * 1960-12-08 1965-01-05 Gen Electric Apparatus for central recording of remote meter data by periodic and sequential meter interrogation
US3114891A (en) * 1961-11-06 1963-12-17 Gen Signal Corp Telemetering system
US3325598A (en) * 1963-09-18 1967-06-13 Bell Telephone Labor Inc Remote condition monitoring circuit with ringing current actuated switch connecting twomode oscillator to telephone line
US3414676A (en) * 1965-07-19 1968-12-03 Veron E. Long Automatic interrogation system for utility meters and the like

Also Published As

Publication number Publication date
DE2109036A1 (de) 1971-10-14
FR2092377A5 (enExample) 1972-01-21
JPS5129414B1 (enExample) 1976-08-25
US3719928A (en) 1973-03-06
CH536533A (de) 1973-04-30
DE2109036B2 (de) 1973-05-03
DE2109036C3 (de) 1973-11-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years