To efficiently and easily set the threshold for determining clogging of a connecting pipe.
The connecting pipe clogging detector includes a pressure detection means for detecting a differential pressure, a high-pressure side static pressure, and a low-pressure side static pressure; a first oscillation calculation means for calculating oscillation in the differential pressure, on the basis of time series data of the differential pressure; a second oscillation calculation means for calculating oscillation in the high-pressure side static pressure, on the basis of time series data of the high-pressure side static pressure; a third oscillation calculation means for calculating oscillation in the low-pressure side static pressure, on the basis of time series data of the low-pressure side static pressure; a first square sum calculation means for calculating the sum of the squares of the oscillation in the differential pressure; a second square sum calculation means for calculating the sum of the squares of the oscillation in the high-pressure side pressure; a third square sum calculation means for calculating the sum of the squares of the oscillation in the low-pressure side pressure; a correlation coefficient calculation means for calculating a first correlation coefficient and a second correlation coefficient; an intermediate variable calculation means for calculating intermediate variable; a clogging degree calculation means for calculating the degree of clogging; and a clogging determination means for determining the clogging of the high-pressure side connecting pipe and the low-pressure side connecting pipe, on the basis of the clogging degree.
COPYRIGHT: (C)2008,JPO&INPIT
WAKUI TETSUYA
SAKAENO JUNICHI
MIYAJI NOBUO
HASHIZUME TAKUMI
WAKUI TETSUYA
SAKAENO JUNICHI
| JP2004132817A | 2004-04-30 | |||
| JP2004294175A | 2004-10-21 | |||
| JP2005274501A | 2005-10-06 | |||
| JP2000505563A | 2000-05-09 |
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama