DocumentCode :
464974
Title :
An Implantable Long-term Bladder Urine Pressure Measurement System with a 1-atm Canceling Instrumentation Amplifier
Author :
Chi-Chun Huang ; Jian-Sing Liou ; Yan-Jhin Ciou ; I-Yu Huang ; Chih-Peng Li ; Yun-Chin Lee ; Wen-Jen Wu
Author_Institution :
Dept. of Electr. Eng., National Sun Yat-Sen Univ., Kaohsiung
fYear :
2007
fDate :
27-30 May 2007
Firstpage :
2383
Lastpage :
2386
Abstract :
An implantable system for long-term bladder urine pressure measurement system is presented. Not only is the design cost reduced, but also the reliability is enhanced by using a 1-atm canceling sensing IA (instrumentation amplifier). Because the urine pressure inside the bladder does not vary drastically, both the sleeping and working modes are required in order to save the battery power for long-term observation. The IA amplifies the signal sensed by the pressure sensor, which is then fed into the following ADC (analog-to-digital converter). Owing to the intrinsic 1-atm pressure (one atmospheric pressure) existing inside the bladder, the IA must be able to cancel such a pressure from the signal picked up by the pressure sensor to keep the required linearity and the resolution for pressure measurement of the bladder urine. The pressure range of the proposed system is found out to be 14.7 ~ 19.7 Psi, which covers the range of all of the known unusual bladder syndromes or complications.
Keywords :
analogue-digital conversion; biological organs; instrumentation amplifiers; pressure measurement; pressure sensors; prosthetics; 1 atm; analog-to-digital converter; battery power; canceling instrumentation amplifier; implantable long-term bladder urine pressure measurement system; pressure sensor; Bladder; Diseases; In vitro; In vivo; Instruments; Linearity; Power measurement; Pressure measurement; Semiconductor device measurement; Size measurement; IA; bladder; implantable; linearity; urine pressure;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on
Conference_Location :
New Orleans, LA
Print_ISBN :
1-4244-0920-9
Electronic_ISBN :
1-4244-0921-7
Type :
conf
DOI :
10.1109/ISCAS.2007.377939
Filename :
4253155
Link To Document :
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