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1. 发明专利

JP2014119406A Abnormality detection system and abnormality detection method of columnar structure 有权
标题翻译：异常检测系统和异常结构异常检测方法
公开(公告)号：JP2014119406A
公开(公告)日：2014-06-30
申请号：JP2012276413
申请日：2012-12-19
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社 , Airec Engineering Corp , アイレック技建株式会社 , Kozo Keikaku Engineering Inc , 株式会社構造計画研究所
发明人： NARIMATSU YUKI , HATA SHIGETOSHI , SHIMOKAWA NAOKI , YABE AKITO , YAGI YASUHITO
IPC分类号： G01H17/00
摘要： PROBLEM TO BE SOLVED: To provide an abnormality detection system and an abnormality detection method of a columnar structure capable of detecting damaging of a columnar structure where a design load is large, many articles are strung hardly shaking, a column length and a design load vary, and a ground boundary is difficult to be detected.SOLUTION: An abnormality management system subjects an acceleration waveform of each striking angle obtained by striking a columnar structure in a circumferential direction from many directions to Fourier transformation, extracts an analysis band and two analysis time zones shifted by a predetermined time corresponding to a plurality of unique vibration modes from the bottom vibration frequency extracted by converting an obtained Fourier spectrum into a logarithmic display, extracts the dominant vibration frequency for each unique vibration mode from a waveform obtained by taking a difference between two waveforms obtained by time-integrating for each of two analysis time zones a scalogram obtained by executing wavelet transformation in the extracted analysis band, and determines abnormality when there is a difference of a predetermined value or higher between dominant vibration frequencies of the unique vibration modes of the respective extracted striking angles.
摘要翻译：要解决的问题：为了提供能够检测设计负荷大的柱状结构的损坏的柱状结构的异常检测系统和异常检测方法，许多物品几乎不摇晃，柱长度和设计负荷变化，并且难以检测地面边界。解决方案：异常管理系统通过从多个方向将圆柱形结构撞击到多个方向获得的每个撞击角的加速度波形进行傅里叶变换，提取分析带和两个分析时间从通过将获得的傅立叶频谱转换成对数显示而提取的底部振动频率对应于多个独特振动模式的预定时间的区域，从通过取得第二振幅获得的波形中提取每个唯一振动模式的主振动频率通过时间积分获得两个波形在两个分析时区中，通过在提取的分析频带中执行小波变换获得的缩放图，并且当各个提取的冲击角的唯一振动模式的主要振动频率的主要振动频率之间存在预定值以上的差异时，确定异常。

2. 发明专利

JP2011257261A Method and device for detecting damage of columnar structure, and program 有权
标题翻译：用于检测柱结构损伤的方法和装置，以及程序
公开(公告)号：JP2011257261A
公开(公告)日：2011-12-22
申请号：JP2010131755
申请日：2010-06-09
申请人： Kozo Keikaku Engineering Inc , Nippon Telegr & Teleph Corp , 日本電信電話株式会社 , 株式会社構造計画研究所
发明人： NARIMATSU YUKI , IIDA TOSHIAKI , HATA SHIGETOSHI , KIKUCHI MASATO , MATSUMIYA NAOKI , YABE AKITO , YAMAMOTO KAZUMI
IPC分类号： G01N29/12 , G01M7/08 , G01M99/00 , G01N3/00 , G01N3/31
摘要： PROBLEM TO BE SOLVED: To provide a method for detecting damage of a columnar structure, which is capable of detecting the presence of damage, the degree of damage, and a damage direction of the columnar structure in a short time and at a low cost, without depending on variations in the columnar structure.SOLUTION: A vibration generator set between a bottom end and a tip end of a concrete column 1 generates vibrations for swinging the entire concrete column, in multiple horizontal directions. The vibrations for swinging the entire concrete column are received by a receiving sensor 3 installed between the bottom end and the tip end. A damage detection device 10 replaces time-series waveforms in respective circumferential directions, which are received by the receiving sensor 3, by a frequency distribution, extracts a time domain in which vibrations in an excitation direction are dominant, from the replaced frequency distribution, and calculates differences between dominant frequencies in the time domain in which the vibrations in the excitation direction are dominant, for respective circumferential directions. The damage detection device 10 displays a graph of the calculated differences of the dominant frequencies in respective circumferential directions and analyzes the differences of the dominant frequencies for respective circumferential directions to determine the presence of damage, the degree of damage, and a damage direction.
摘要翻译：要解决的问题：提供一种用于检测柱状结构的损伤的方法，其能够在短时间内和在短时间内检测柱状结构的损伤，损伤程度和损伤方向的存在低成本，不依赖于柱状结构的变化。解决方案：在混凝土柱1的底端和顶端之间设置的振动发生器产生在多个水平方向上摆动整个混凝土柱的振动。用于摆动整个混凝土柱的振动由安装在底端和末端之间的接收传感器3接收。损伤检测装置10通过频率分布来代替由接收传感器3接收的各周向的时间序列波形，从取代的频率分布中提取激励方向的振动占主导地位的时域，对于各个圆周方向，计算在激励方向上的振动占优势的时域中的主要频率之间的差别。损伤检测装置10显示计算出的各个周向上的主频的差分的曲线图，并且分析各周向的主频的差异，以确定损伤的存在，损伤的程度和损伤方向。版权所有（C）2012，JPO＆INPIT

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