S-Space College of Medicine/School of Medicine (의과대학/대학원) Biomedical Engineering (의공학전공) Journal Papers (저널논문_의공학전공)
Pneumatic frequency selection filter in the prior stage of the air pressure transducer
Cited 1 time in Web of Science Cited 1 time in Scopus
- Issue Date
- ELSEVIER SCI LTD
- MEASUREMENT; Vol.42 1; 9-12
- Air pressure transducer ; High pass filter ; Balancing tube
- To use frequency selection filter with electrical components, the signal from the transducer should have the detailed information with enough signal-to-noise ratio. In the measurement of air pressure, if the small variation is added to the big amplitude of slowly varying signal, there needs to eliminate the low frequency component in front of the transducer to avoid saturation. To achieve that, the concept of balancing tube was suggested and analyzed as pneumatic high pass filter. The simple method to adjust and find the cutoff frequency of the high pass filter is shown and validated, One application of this measurement technique in physiological monitoring using air mattress and balancing tube is summarized. (C) 2008 Elsevier Ltd. All rights reserved.
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