JPS56141575A - Alarm system for early detection of earthquake - Google Patents

Alarm system for early detection of earthquake

Info

Publication number
JPS56141575A
JPS56141575A JP4513880A JP4513880A JPS56141575A JP S56141575 A JPS56141575 A JP S56141575A JP 4513880 A JP4513880 A JP 4513880A JP 4513880 A JP4513880 A JP 4513880A JP S56141575 A JPS56141575 A JP S56141575A
Authority
JP
Japan
Prior art keywords
earthquake
danger
signal
observation
amplitude
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
JP4513880A
Other versions
JPS6014315B2 (en
Inventor
Sukekichi Emoto
Toshiro Fujiwara
Tamio Hashimoto
Yutaka Nakamura
Original Assignee
Japanese National Railways<Jnr>
Oki Electric Ind Co 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 Japanese National Railways<Jnr>, Oki Electric Ind Co Ltd filed Critical Japanese National Railways<Jnr>
Priority to JP55045138A priority Critical patent/JPS6014315B2/ja
Publication of JPS56141575A publication Critical patent/JPS56141575A/en
Publication of JPS6014315B2 publication Critical patent/JPS6014315B2/ja
Application status is Expired legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS
    • G01V1/00Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/008Earthquake measurement or prediction

Abstract

PURPOSE:To minimize confusion by transmitting a danger signal in an extremely short time as the first step in case when the detected earthquake is considered dangerous more or less, making observation in continuation and canceling the danger signal when it is confirmed safe. CONSTITUTION:The signal from the sensor 11 of a central device 1 is sent to a control processor 15 via an amplifier 12, etc. and the signal from the sensor 21 of each terminal device 2 to said unit via a transmitter 22, a communication wire 3, etc. When the outbreak of an earthquake is detected, the unit 15 indentifies the danger of said earthquake. Namely, the decision of danger/safety is accomplished by comparing the period FP2, amplitude LP2 of the initial movement obtained by observation for about one second after detection of the earthquake and the compared values FC1, Ln3 determined from the correlation between the period and amplitude of the actual waves and the earthquake scale. Here, when it is decided that this earthquake has no danger, the monitoring is resumed, and in other case, a danger signal is once transmitted and the observation is continued. With such constitution, the confusion of, for example, train diagrams or the like is minimized.
JP55045138A 1980-04-08 1980-04-08 Expired JPS6014315B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55045138A JPS6014315B2 (en) 1980-04-08 1980-04-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55045138A JPS6014315B2 (en) 1980-04-08 1980-04-08

Publications (2)

Publication Number Publication Date
JPS56141575A true JPS56141575A (en) 1981-11-05
JPS6014315B2 JPS6014315B2 (en) 1985-04-12

Family

ID=12710914

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55045138A Expired JPS6014315B2 (en) 1980-04-08 1980-04-08

Country Status (1)

Country Link
JP (1) JPS6014315B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014160044A (en) * 2013-02-21 2014-09-04 Hitachi Zosen Corp System and method for predicting tsunami
JP2017015603A (en) * 2015-07-02 2017-01-19 オムロン株式会社 Seismic sensor and threshold adjustment method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006320139A (en) * 2005-05-13 2006-11-24 Railway Technical Res Inst Vehicle braking method and braking system
JP4769486B2 (en) * 2005-05-13 2011-09-07 公益財団法人鉄道総合技術研究所 Vehicle braking method
US9706089B2 (en) 2012-03-02 2017-07-11 Microsoft Technology Licensing, Llc Shifted lens camera for mobile computing devices
US9460029B2 (en) 2012-03-02 2016-10-04 Microsoft Technology Licensing, Llc Pressure sensitive keys

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014160044A (en) * 2013-02-21 2014-09-04 Hitachi Zosen Corp System and method for predicting tsunami
JP2017015603A (en) * 2015-07-02 2017-01-19 オムロン株式会社 Seismic sensor and threshold adjustment method

Also Published As

Publication number Publication date
JPS6014315B2 (en) 1985-04-12

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