Title:
METHOD FOR COLLECTING AND PROCESSING TIME-SERIES DATA UTILIZING AUTOREGRESSIUE MODEL AND SIGNIFICANT-SIGNAL EXTRACTING SYSTEM FROM TIME-SERIES DATA UTILIZING AUTOREGRESSIVE MODEL
Document Type and Number:
Japanese Patent JP3675965
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make it possible to extract an arbitrary significant signal embedded in noises excellently by setting the transfer function of the respective autoregressive coefficients obtained from a significant signal part and a noise part, constituting highlighting and blocking filters, and processing the time-series data through the filters.
SOLUTION: The data collected with a data collecting means 1 are inputted into highlighting-filter operating means 61 and 62 and a blocking-filter operating means 7 through a data switching means 5, and the respective autoregressive coefficients are computed. The transfer functions of the highlighting filters and the blocking filter are set at the respective highlighting and blocking filters F1 and F2 so that the transfer functions are internally present as the quotient patterns. A data processing means 4 monitors the data after passing the respective highlighting and blocking filters F1 and F2 at the voltage level in real time. When the voltage level of the data is higher than a preset level, the acceptance of the original data is continued as the data including the significant signal. When the data become lower than the preset level, the background noises are accepted. Thus, the characteristic quantity is extracted.
Inventors:
Yasushi Yonemura
Kajiro Watanabe
Kajiro Watanabe
Application Number:
JP18384596A
Publication Date:
July 27, 2005
Filing Date:
July 12, 1996
Export Citation:
Assignee:
Tokyo Gas Co., Ltd.
International Classes:
G01D1/14; G01D3/028; G01H17/00; G01N29/12; G01N29/22; G01N29/44; (IPC1-7): G01D3/028; G01H17/00; G01N29/12; G01N29/22
Domestic Patent References:
| JP6027940A | ||||
| JP7038454A | ||||
| JP9127073A |
Other References:
上田賀一他,「カルマンフィルタによる睡眠脳波中の紡錘波の分離とその認識」,電子情報通信学会論文誌,日本,社団法人電子情報通信学会誌,1987年 1月25日,Vol.J70-D,No.1,p.225-233
三島由記博,「適応フィルタとニューラルネットワークを用いた切削異常状態の検知」,精密工学会誌,日本,社団法人精密工学会,1991年10月15日,Vol.57,No.10,p.1774-1779
瀧澤由美,「多段非定常課程の非スペクトル推定法とその適用」,電子情報通信学会論文誌,日本,社団法人電子情報通信学会,1991年10月25日,Vol.J74-A,No.10,p.1467-1482
三島由記博,「適応フィルタとニューラルネットワークを用いた切削異常状態の検知」,精密工学会誌,日本,社団法人精密工学会,1991年10月15日,Vol.57,No.10,p.1774-1779
瀧澤由美,「多段非定常課程の非スペクトル推定法とその適用」,電子情報通信学会論文誌,日本,社団法人電子情報通信学会,1991年10月25日,Vol.J74-A,No.10,p.1467-1482
Attorney, Agent or Firm:
Yoshikazu Mitsuhashi
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