Patent ID: 11867592
Assignee: NEC CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  E | IPC G

Claim 2:
3. The structure displacement amount measurement apparatus according to claim 1, wherein
the section of time is estimated by:
dividing the period of time into a plurality of sub-periods of time;
for each of the plurality of sub-periods of time partial time series data, detecting a time tmax at which a rate of change in the displacement amount becomes maximum;
detecting a first time ts at which both the rate of change in the displacement amount and an acceleration become equal to or less than a threshold rate and a threshold acceleration that are previously set and stored, starting from the time tmax in a prior sub-period of time;
detecting a first time te at which both the rate of change in the displacement amount and the acceleration become equal to or less than the threshold rate and the threshold acceleration, starting from the time tmax in a subsequent sub-period of time; and
set a section from the time ts to the time te as the estimated section of time.