Principles of Biomedical Systems & Devices Principles of ... - Rowan
Principles of Biomedical Systems & Devices Principles of ... - Rowan
Principles of Biomedical Systems & Devices Principles of ... - Rowan
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Dynamic Properties <strong>of</strong> the<br />
Measurement System<br />
PBS&D – Fall 2004 – Polikar http://engineering.rowan.edu/~polikar/CLASSES/ECE404<br />
Errors in measurement <strong>of</strong> dynamic pressure can lead to significant consequences,<br />
underdamped system Overestimated BP.<br />
The liquid filled catheter-sensor is a hydraulic system that can be best modeled by<br />
distributed parameters.<br />
R c<br />
P<br />
L c<br />
Liquid<br />
R c<br />
L c<br />
Incremental<br />
length<br />
R c<br />
Catheter<br />
L c<br />
R s<br />
L s<br />
Sensor<br />
Diaphragm<br />
Cc Cc Cc C ∆V<br />
C d =<br />
s ∆P<br />
Each segment <strong>of</strong> the catheter has its own resistance R c , inertance L c , and compliance C c . In addition,<br />
the sensor has resistor R s , inertance, L s , and compliance C s . The compliance <strong>of</strong> the diaphragm is C d .<br />
∆V
Change language