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GB2024568B - Responder detection systems - Google Patents

Responder detection systems

Info

Publication number
GB2024568B
GB2024568B GB7915631A GB7915631A GB2024568B GB 2024568 B GB2024568 B GB 2024568B GB 7915631 A GB7915631 A GB 7915631A GB 7915631 A GB7915631 A GB 7915631A GB 2024568 B GB2024568 B GB 2024568B
Authority
GB
United Kingdom
Prior art keywords
detection systems
responder detection
responder
systems
detection
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
GB7915631A
Other versions
GB2024568A (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.)
Siemens Corp
Original Assignee
Siemens 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 Siemens Corp filed Critical Siemens Corp
Publication of GB2024568A publication Critical patent/GB2024568A/en
Application granted granted Critical
Publication of GB2024568B publication Critical patent/GB2024568B/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
    • E21F17/18—Special adaptations of signalling or alarm devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/12—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
    • F16P3/14—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact
    • F16P3/147—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact using electro-magnetic technology, e.g. tags or radar
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2491—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Transmitters (AREA)
GB7915631A 1978-05-12 1979-05-04 Responder detection systems Expired GB2024568B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2820840A DE2820840C3 (en) 1978-05-12 1978-05-12 Arrangement for the protection of danger areas in underground operations

Publications (2)

Publication Number Publication Date
GB2024568A GB2024568A (en) 1980-01-09
GB2024568B true GB2024568B (en) 1982-05-19

Family

ID=6039249

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7915631A Expired GB2024568B (en) 1978-05-12 1979-05-04 Responder detection systems

Country Status (5)

Country Link
BE (1) BE876198A (en)
DE (1) DE2820840C3 (en)
FR (1) FR2425683A1 (en)
GB (1) GB2024568B (en)
YU (1) YU111879A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4361904A (en) 1979-07-31 1982-11-30 Nissan Motor Company, Limited Method of testing transceiver and transceiver including testing apparatus

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3010667C2 (en) * 1980-03-20 1982-11-11 Aeg-Elotherm Gmbh, 5630 Remscheid Safety device for a machine tool
DE3234601A1 (en) * 1982-09-17 1984-03-22 Siemens AG, 1000 Berlin und 8000 München Arrangement for marking persons and objects
GB2355098B (en) * 1998-04-30 2003-07-02 Us Gov Health & Human Serv Intrinsically safe roof hazard alert module
US6114955A (en) * 1998-06-03 2000-09-05 Interactive Technologies, Inc. System and method for antenna failure detection
US6469619B1 (en) 1999-04-20 2002-10-22 The United States Of America As Represented By The Department Of Health And Human Services Intrinsically-safe roof hazard alert module

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO126975B (en) * 1967-03-30 1973-04-16 John Welsh
GB1187130A (en) * 1967-12-09 1970-04-08 Plessey Co Ltd Improvements in or relating to Vehicle Identification Systems.
US3798642A (en) * 1972-09-27 1974-03-19 Microlab Fxr Recognition system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4361904A (en) 1979-07-31 1982-11-30 Nissan Motor Company, Limited Method of testing transceiver and transceiver including testing apparatus

Also Published As

Publication number Publication date
FR2425683B1 (en) 1985-02-08
DE2820840A1 (en) 1979-11-22
YU111879A (en) 1983-01-21
BE876198A (en) 1979-11-12
DE2820840B2 (en) 1981-03-12
GB2024568A (en) 1980-01-09
DE2820840C3 (en) 1982-01-21
FR2425683A1 (en) 1979-12-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee