| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure measuring device capable of further accurately measuring pressure including its change (especially minute change).SOLUTION: Pressure Plow is obtained by applying a low pass filter to pressure Paps from an absolute pressure sensor, and a pressure change amount Phigh is obtained by applying a high pass filter to a pressure change amount Pdps obtained by applying a filter to a resistance value change rate ΔR/Rdps from a differential pressure sensor. Then, pressure after synthesis Pfused is obtained by synthesizing the pressure Plow and the pressure change amount Phigh.SELECTED DRAWING: Figure 2 |
