JPS5646479A - Seismometer system - Google Patents

Seismometer system

Info

Publication number
JPS5646479A
JPS5646479A JP12255979A JP12255979A JPS5646479A JP S5646479 A JPS5646479 A JP S5646479A JP 12255979 A JP12255979 A JP 12255979A JP 12255979 A JP12255979 A JP 12255979A JP S5646479 A JPS5646479 A JP S5646479A
Authority
JP
Japan
Prior art keywords
seismometer
output
virtual
frequency
damping coefficient
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.)
Granted
Application number
JP12255979A
Other languages
Japanese (ja)
Other versions
JPS592357B2 (en
Inventor
Yutaka Nakamura
Kiyoshi Kato
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.)
JAPANESE NATIONAL RAILWAYS<JNR>
Japan National Railways
Oki Electric Industry Co Ltd
Original Assignee
JAPANESE NATIONAL RAILWAYS<JNR>
Japan National Railways
Oki Electric Industry 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>, Japan National Railways, Oki Electric Industry Co Ltd filed Critical JAPANESE NATIONAL RAILWAYS<JNR>
Priority to JP54122559A priority Critical patent/JPS592357B2/en
Publication of JPS5646479A publication Critical patent/JPS5646479A/en
Publication of JPS592357B2 publication Critical patent/JPS592357B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE: To minimize the distortion of the output waveform in accordance with the frequency of the vibration on the ground surface, by introducing a conception of the virtual seismometer in which a selection and alteration is possible for both the resonance frequency and the damping coefficient to an optional value occasionally.
CONSTITUTION: The seismometer system comprises the real seismometer 1, n- multiplier 2, virtual seismometer 3, adder 4 and others. The seismometer 1 has the frequency characteristics of the resonance frequency ω1 and the damping coefficient h1 each plus the dampling characteristics. Thus the output waveform is delivered in the form of the electric signal based on the motion equation shown by (I). The virtual seismometer 3 just gives an input to e.g. the microcomputer or the like, can be set to an optional value in an extremely easy way and solves the motion euation shown by (II) to deliver the displacement output, the velocity output and the acceleration output each.
COPYRIGHT: (C)1981,JPO&Japio
JP54122559A 1979-09-26 1979-09-26 seismograph system Expired JPS592357B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54122559A JPS592357B2 (en) 1979-09-26 1979-09-26 seismograph system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54122559A JPS592357B2 (en) 1979-09-26 1979-09-26 seismograph system

Publications (2)

Publication Number Publication Date
JPS5646479A true JPS5646479A (en) 1981-04-27
JPS592357B2 JPS592357B2 (en) 1984-01-18

Family

ID=14838882

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54122559A Expired JPS592357B2 (en) 1979-09-26 1979-09-26 seismograph system

Country Status (1)

Country Link
JP (1) JPS592357B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6212884A (en) * 1985-07-10 1987-01-21 Tokyo Univ Earthquake motion intensity detection method for control
JPS6212885A (en) * 1985-07-10 1987-01-21 Tokyo Univ Earthquake motion intensity detecting method for control
JPS6212886A (en) * 1985-07-10 1987-01-21 Tokyo Univ Earthquake motion intensity detecting method for control

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6212884A (en) * 1985-07-10 1987-01-21 Tokyo Univ Earthquake motion intensity detection method for control
JPS6212885A (en) * 1985-07-10 1987-01-21 Tokyo Univ Earthquake motion intensity detecting method for control
JPS6212886A (en) * 1985-07-10 1987-01-21 Tokyo Univ Earthquake motion intensity detecting method for control

Also Published As

Publication number Publication date
JPS592357B2 (en) 1984-01-18

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