SIGNAL PROCESSING APPARATUS, SERVER, DETECTION SYSTEM, AND SIGNAL PROCESSING METHOD
First Claim
1. A signal processing apparatus, comprising:
- a receiver configured to receive a voltage signal from a sensor that detects an elastic wave generated from a structure;
a time information generator configured to generate time information having a bit length based on a measurement continuing time period of the structure, a propagation velocity of the elastic wave, and a position identification accuracy of a generation source of the elastic wave;
a processor configured to generate detection information in which feature amount information that indicates a feature of the voltage signal and the time information that indicates a reception time of the voltage signal are in association with each other; and
a communicator configured to transmit the detection information to a server.
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Abstract
According to an embodiment, a signal processing apparatus includes a receiver, a time information generator, a processor, and a communicator. The receiver receives a voltage signal from a sensor that detects an elastic wave generated from a structure. The time information generator generates time information having a bit length based on a measurement continuing time period of the structure, a propagation velocity of the elastic wave, and a position identification accuracy of a generation source of the elastic wave. The processor generates detection information in which feature amount information that indicates a feature of the voltage signal and the time information that indicates a reception time of the voltage signal are in association with each other. The communicator transmits the detection information to a server.
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Citations
11 Claims
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1. A signal processing apparatus, comprising:
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a receiver configured to receive a voltage signal from a sensor that detects an elastic wave generated from a structure; a time information generator configured to generate time information having a bit length based on a measurement continuing time period of the structure, a propagation velocity of the elastic wave, and a position identification accuracy of a generation source of the elastic wave; a processor configured to generate detection information in which feature amount information that indicates a feature of the voltage signal and the time information that indicates a reception time of the voltage signal are in association with each other; and a communicator configured to transmit the detection information to a server. - View Dependent Claims (2, 3, 4)
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5. A server, comprising:
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a communicator configured to receive detection information in which feature amount information that indicates a feature of an acoustic emission signal representing an elastic wave generated from a structure and time information that indicates a reception time of the acoustic emission signal are in association with each other; a memory configured to store therein the detection information; and an identifier configured to identify position information about a generation source of the elastic wave on the basis of the detection information, wherein the time information has a bit length based on a measurement continuing time period of the structure, a propagation velocity of the elastic wave, and a position identification accuracy of the generation source of the elastic wave. - View Dependent Claims (6, 7, 8, 9)
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10. A detection system, comprising:
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a plurality of acoustic emission sensors; a signal processing apparatus; and a server, wherein the AE sensors each includes; a detector configured to detect, as a voltage signal, an elastic wave generated from a structure, the signal processing apparatus includes; a receiver configured to receive the voltage signals from the AE sensors; a time information generator configured to generate time information having a bit length based on a measurement continuing time period of the structure, a propagation velocity of the elastic wave, and a position identification accuracy of a generation source of the elastic wave; a processor configured to generate detection information in which feature amount information that indicates a feature of the voltage signal and the time information that indicates a reception time of the voltage signal are in association with each other; and a communicator configured to transmit the detection information to the server, and the server includes; a communicator configured to receive the detection information from the signal processing apparatus; a memory configured to store therein the detection information; and an identifier configured to identify a position of the elastic wave on the basis of the detection information.
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11. A signal processing method performed by a signal processing apparatus, the method comprising:
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receiving a voltage signal from an acoustic emission sensor that detects an elastic wave generated from a structure; generating time information having a bit length based on a measurement continuing time period of the structure, a propagation velocity of the elastic wave, and a position identification accuracy of a generation source of the elastic wave; generating detection information in which feature amount information that indicates a feature of the voltage signal and the time information that indicates a reception time of the voltage signal are in association with each other; and transmitting the detection information to a server.
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Specification