Title:
導圧管詰まり検出装置及び導圧管詰まり検出方法
Document Type and Number:
Japanese Patent JP4970820
Kind Code:
B2
Abstract:
A detecting apparatus includes the following units. A pressure detecting unit detects in time series higher and lower static pressures and a differential pressure. Fluctuation calculating units calculate time series data sets of a differential pressure fluctuation, a higher static pressure fluctuation, and a lower static pressure fluctuation. Square sum calculating units calculate the square sum of the time series data sets of the differential pressure fluctuation, the square sum of the time series data sets of the higher static pressure fluctuation, and the square sum of the time series data sets of the lower static pressure fluctuation. A correlation coefficient calculating unit calculates first and second correlation coefficients. An intermediate variable calculating unit calculates an intermediate variable. A blockage rate calculating unit calculates a blockage rate. A determination unit determines a blockage of higher and lower pressure impulse lines with reference to the blockage rate.
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| WO/2020/243512 | DIRECTIONAL DIFFERENTIAL PRESSURE DETECTOR |
Inventors:
Hashizume Takumi
Takuya Wakui
Junichi Eino
Miyachi Nobuo
Takuya Wakui
Junichi Eino
Miyachi Nobuo
Application Number:
JP2006084524A
Publication Date:
July 11, 2012
Filing Date:
March 27, 2006
Export Citation:
Assignee:
Yokogawa Electric Corporation
Hashizume Takumi
Takuya Wakui
Junichi Eino
Hashizume Takumi
Takuya Wakui
Junichi Eino
International Classes:
G01L13/00
Domestic Patent References:
| JP2004132817A | ||||
| JP2004294175A | ||||
| JP2005274501A | ||||
| JP2000505563A |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama