Patent ID: 11881102
Assignee: SEIKO EPSON CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. A measurement computer program product embodying computer readable instruction stored on a non-transitory computer-readable medium for causing a computer to execute a process by a processor so as to perform the steps of:
causing a first observation device to acquire first observation point information, the first observation device being disposed at a first observation point of a structure, the structure being a superstructure of a road bridge or a railway bridge, of a moving object moving on the superstructure along a first direction, the first observation point information including a plurality of first physical quantities in association with a first plurality of times, each of the plurality of first physical quantities corresponding to a response to an action of each of a plurality of parts of the moving object that passes by the first observation point at each of the first plurality of times;
causing a second observation device to acquire second observation point information, the second observation device being disposed at a second observation point of a structure, the second observation device being spaced apart from the first observation device along the first direction, the second observation point information including a plurality of second physical quantities in association with a second plurality of times, each of the plurality of second physical quantities corresponding to a response to an action of each of a plurality of parts of the moving object that passes by the second observation point at each of the second plurality of times;
calculating a first plurality of deflection waveforms at a third observation point, generated by the plurality of parts, based on the first observation point information, the second observation point information, a predetermined coefficient, and a first approximate expression of deflection at the third observation point according to a structural model of the structure, the third observation point being located between the first and second observation points along the first direction and shifted from a central position between the first and second observation points along the first direction;
calculating a first object deflection waveform at the third observation point penetrated by the moving object by adding the first plurality of deflection waveforms,
calculating a first path deflection waveform at the third observation point based on the first object deflection waveform;
calculating a second plurality of deflection waveforms at the central position, generated by the plurality of parts, based on the first observation point information the second observation point information, the predetermined coefficient and a second approximate expression of deflection at the central position according to the structural model of the structure;
calculating a second object deflection waveform at central position generated by the moving object by the second plurality of deflection waveforms;
calculating a second path deflection waveform at the central position based on the second object deflection waveform;
causing a third observation device to acquire third observation point information, the third observation device being disposed at the third observation point of the structure, the third observation point information including a third physical quantity, the third physical quantity corresponding to a response to an action of the moving object that passes by the third observation point;
calculating a measurement waveform of the third physical quantity based on the third observation point information;
calculating an amplitude coefficient at which a difference is minimized between the measurement waveform and a waveform obtained by multiplying the first path deflection waveform by the amplitude coefficient;
calculating an estimation waveform at the central position based on the second path deflection waveform and the amplitude coefficient; and
transmitting information relating to the estimation waveform to a server, the server monitoring the superstructure based on the estimation waveform.