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    • 1. 发明授权
    • Unknown sound evaluating method and apparatus
    • 未知的声音评估方法和装置
    • US4586378A
    • 1986-05-06
    • US658167
    • 1984-10-05
    • Shigeru IzumiYoshihiro MichiguchiMakoto Senoh
    • Shigeru IzumiYoshihiro MichiguchiMakoto Senoh
    • G01S5/22G01S5/30G01N29/04
    • G01S5/30G01S5/22
    • Method and apparatus for evaluating location of an unknown sound generated in a structure such as a pressure vessel. A plurality of sound detectors are mounted on the structure for detecting sounds generated in the structure. On the basis of sound information of the unknown sound source derived from the outputs of the detectors, the location where the unknown sound is produced is determined. To this end, reference sounds are first generated at a plurality of known reference sound source positions, wherein information of the reference sounds derived from the outputs of the detectors are stored in a storage unit. Equi-pattern-distance curves each of which is in an equal pattern distance between a supposed unknown sound source and each of the reference sound sources are calculated on the basis of the reference sound information. The equi-pattern-distance curves are further corrected in accordance with the reference sound information. Upon occurrence of an unknown sound, pattern distances between the desired reference sound source positions and the unknown sound source position are calculated through pattern recognition procedure from the sound information derived from the outputs of the detector and the reference sound information stored. On the basis of the calculated pattern distances and the equi-pattern-distance curves, the position of the unknown sound source is determined. On the basis of the position of the unknown sound source, kinetic energy thereof may be arithmetically determined.
    • 用于评估在诸如压力容器的结构中产生的未知声音的位置的方法和装置。 多个声音检测器安装在用于检测在结构中产生的声音的结构上。 基于从检测器的输出导出的未知声源的声音信息,确定产生未知声音的位置。 为此,首先在多个已知参考声源位置产生参考声音,其中从检测器的输出导出的参考声音的信息被存储在存储单元中。 基于参考声音信息计算每个假想的未知声源与每个参考声源之间的相等图案距离的等距离距离曲线。 根据参考声音信息进一步校正等距离距离曲线。 在出现未知声音时,通过从检测器的输出和存储的参考声音信息导出的声音信息通过模式识别程序来计算期望的参考声源位置与未知声源位置之间的图案距离。 根据计算出的图案距离和等距离距离曲线,确定未知声源的位置。 在未知声源的位置的基础上,可以算术地确定其动能。
    • 2. 发明授权
    • Method and apparatus for estimating sound source position
    • 用于估计声源位置的方法和装置
    • US4641526A
    • 1987-02-10
    • US617500
    • 1984-06-05
    • Shigeru IzumiMakoto SenohKoji TsumakiKenji Miyata
    • Shigeru IzumiMakoto SenohKoji TsumakiKenji Miyata
    • G01B17/00G01S5/18G01S5/22G01N29/00
    • G01S5/18
    • Method and apparatus for estimating the location of an unknown sound source in a structure to be monitored, wherein sounds from at least three known sound sources are detected by a plurality of detectors. At least one of peak value data and signal arrival time data derived from the outputs of the detectors are classified for each of the known sound sources and stored in a storage. Pattern differences from each of the known sound sources to a number of predetermined positions respectively, are calculated to prepare for each of the known sound sources a correspondence table indicating relationships between the calculated pattern difference and the real distances from the known sound source positions to the predetermined positions, the correspondence table being stored in a storage. The pattern differences for each of the known sound source positions are calculated on the basis of the sound signal data derived through detection of a sound from an unknown sound source and the data stored in the storage. The real distances each for the known sound source are read out from the correspondence table on the basis of the calculated pattern differences and displayed on a display device to thereby estimate the location of the unknown sound source.
    • 用于估计要监视的结构中的未知声源的位置的方法和装置,其中来自至少三个已知声源的声音由多个检测器检测。 从检测器的输出导出的峰值数据和信号到达时间数据中的至少一个被分类用于每个已知声源并存储在存储器中。 计算每个已知声源到多个预定位置的图案差异,以便为每个已知声源准备对应表,该对应表指示所计算的图案差异与从已知声源位置到实际距离之间的关系 预定位置,对应表被存储在存储器中。 基于通过检测来自未知声源的声音和存储在存储器中的数据导出的声音信号数据来计算每个已知声源位置的图案差异。 基于计算出的图案差异,从对应表中读出已知声源的实际距离,并显示在显示装置上,从而估计未知声源的位置。