Apparatus and method for detecting blockage of impulse lines

Details Apparatus and method for detecting blockage of impulse lines Apparatus and method for detecting blockage of impulse lines

2008-07-29

2008-07-29

Bui, Bryan (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Mechanical measurement system

C702S138000

Reexamination Certificate

active

07406387

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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patent: 7260496 (2007-08-01), Hashizume et al.
patent: 2004-132817 (2004-04-01), None
patent: 2004-294175 (2004-10-01), None
patent: 2005-274501 (2005-10-01), None

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