Title:
METHOD FOR MEASURING MAGNITUDE OF SEISMIC MOTION
Document Type and Number:
Japanese Patent JP3314912
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To simplify and stabilize processing operation by performing SI value calculating operation repeatedly while shifting the range of a time series data by a second set time.
SOLUTION: Calculation is started at an appropriate moment of time R irrespective of an earthquake generating moment of time S or a settling moment of time E. An SI value is calculated, at first, using a time series data in the range of time T from the moment of time R to a moment of time T, from a moment of time Δt to a moment of time T+Δt upon elapsing the time Δt after the moment of time R, and from a moment of time 2Δt to a moment of time T+2Δt upon elapsing another time Δt. Similarly, SI value is calculated every time when the time Δt elapses using a time series data in the range of time T starting from that moment of time. Since a similar processing can be continued from an appropriate moment of time, e.g. a moment of time for recording an acceleration data, irrespective of occurrence or ending of earthquake without requiring any switching of operation mode, the operation is not complicated and a stable operation can be attained.
Inventors:
Yoshihisa Shimizu
Kenichi Koganemaru
Takashi Yanada
Hiroyuki Furukawa
Kenichi Koganemaru
Takashi Yanada
Hiroyuki Furukawa
Application Number:
JP27669096A
Publication Date:
August 19, 2002
Filing Date:
October 18, 1996
Export Citation:
Assignee:
Tokyo Gas Co., Ltd.
YAMATAKE CORPORATION
YAMATAKE CORPORATION
International Classes:
G01V1/16; G01H1/00; G01V1/28; (IPC1-7): G01V1/28; G01H1/00; G01V1/16
Domestic Patent References:
| JP63121718A | ||||
| JP836062A | ||||
| JP6214040A | ||||
| JP6212886A | ||||
| JP3262929A |
Attorney, Agent or Firm:
Koji Misaki
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