JPS5591247A - Radio broadcast device - Google Patents

Radio broadcast device

Info

Publication number
JPS5591247A
JPS5591247A JP16304678A JP16304678A JPS5591247A JP S5591247 A JPS5591247 A JP S5591247A JP 16304678 A JP16304678 A JP 16304678A JP 16304678 A JP16304678 A JP 16304678A JP S5591247 A JPS5591247 A JP S5591247A
Authority
JP
Japan
Prior art keywords
earthquake
signal
wave
circuit
output
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.)
Pending
Application number
JP16304678A
Other languages
Japanese (ja)
Inventor
Kazutoshi Oota
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP16304678A priority Critical patent/JPS5591247A/en
Publication of JPS5591247A publication Critical patent/JPS5591247A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/10—Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)

Abstract

PURPOSE:To realize a radio broadcast device which detects occurrence of the earthquake and then generates the alarm signal automatically. CONSTITUTION:In case the earthquake takes place while the aural signal is broadcasted through microphone 7 and the P wave of the earthquake, i.e., the vertical wave is detected by vertical earthquake detector 9, both contacts 12 and 13 of automatic switch circuit 11 shift by the output to the lower side as shown in the diagram to give switching to the side of special modulation wave circuit 10. And radio transmitter S transmits the sine wave signal of 30Hz. On the other hand, the electric waves transmitted through transmission antenna 5 are received at receiver 15 via reception antenna 14, and only the sine wave signal of 30Hz is extracted out of the output through 30Hz-filter 16. With the detection signal, voltage relay 17 is turned on to operate elevator-nearest-floor stopping circuit 18 to make stop the elevator at the nearest floor.
JP16304678A 1978-12-28 1978-12-28 Radio broadcast device Pending JPS5591247A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16304678A JPS5591247A (en) 1978-12-28 1978-12-28 Radio broadcast device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16304678A JPS5591247A (en) 1978-12-28 1978-12-28 Radio broadcast device

Publications (1)

Publication Number Publication Date
JPS5591247A true JPS5591247A (en) 1980-07-10

Family

ID=15766141

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16304678A Pending JPS5591247A (en) 1978-12-28 1978-12-28 Radio broadcast device

Country Status (1)

Country Link
JP (1) JPS5591247A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56155499A (en) * 1980-04-30 1981-12-01 Masatoshi Takenouchi Disaster preventing system caused by earthquake

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56155499A (en) * 1980-04-30 1981-12-01 Masatoshi Takenouchi Disaster preventing system caused by earthquake

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