Acoustics – Geophysical or subsurface exploration – Seismic wave detection
Patent
1994-06-22
1996-01-16
Eldred, J. Woodrow
Acoustics
Geophysical or subsurface exploration
Seismic wave detection
181401, 340690, 33365, 73649, 73784, G01V 116
Patent
active
054849683
ABSTRACT:
An inference device for discriminating an earthquake includes an ON/OFF signal generating means for generating an ON/OFF signal corresponding to an oscillatory wave, a characteristic parameter extracting means for extracting at least one of three characteristic parameters consisting of an ON period, an ON time sum total and a maximum ON time value based on the generated ON/OFF signal, and an inference means for inferring for each ON period based on the extracted characteristic parameter whether or not an earthquake happens.
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"Toward an Automatic System for Earthquake Investigation," Di Stefano et al., Proceedings of Tencon 87, vol. 2 of 3, Aug. 25, 1987, Seoul, Korea, pp. 492-496.
"Seismic Event Interpretation Using Self-Organizing Neural Networks," Maurer et al., Proceedings SPIE, Applications of Artificial Neural Networks II, vol. 1709, Apr. 1992, Orlando, Fla., pp. 950-958.
"Array Detectors for Random Signals in Noise," Kassam et al., IEEE Transactions on Sonics and Ultrasonics, vol. SU-23, No. 2, Mar. 1976, New York, pp. 107-112.
European Search Report completed Jan. 5, 1995 with Communication dated Jan. 27, 1995.
Proceedings of Tencon 87, "Towards an automatic system for earthquake investigation", Di Stefano et al., 25 Aug. 1987, pp. 492-496.
Proceedings of SPIE, Applications Of Artificial Neural Networks III, vol. 1709, "Seismic event interpretation . . . ", Maurer et al., pp. 950-958, Apr. 1992.
IEEE Transactions on Sonics and Ultrasonics, vol SU-23, #2, Mar. 1976, "Array detectors for random signal in noise", Kassam et al., pp. 107-112.
Eldred J. Woodrow
Omron Corporation
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