A mini-invasive multi-function biomedical pressure measurement system ASIC

Chua Chin Wang*, Chi Chun Huang, Yi Cheng Liu, Victor Pikov, Doron Shmilovitz

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

A mini-invasive system ASIC for mulitple bladder pressure measurement function is presented. Not only can the period of measurement be adjusted, the flexibility is also enhanced by using a tunable IA (instrumentation amplifier). Because the pressure inside the body cavity (i.e., bladder) usually does not vary drastically, a long-term mode is required to save the battery power for a reliable observation. Besides, the pressure dynamics in a cavity also could be examined in the continuous mode. 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 body cavity and the various resolution requirement for the different applications, the input range of the IA must be able to be adjusted to keep the required linearity. The pressure range of the proposed system is found out to be 10.4 - 27.7 Psi with the maximum resolution of 8.42×10 -4 Psi, which is more than enough for most of pressure measurement applications.

Original languageEnglish
Title of host publicationISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems
Subtitle of host publicationNano-Bio Circuit Fabrics and Systems
Pages2936-2939
Number of pages4
DOIs
StatePublished - 2010
Event2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010 - Paris, France
Duration: 30 May 20102 Jun 2010

Publication series

NameISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems

Conference

Conference2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010
Country/TerritoryFrance
CityParis
Period30/05/102/06/10

Keywords

  • Bladder
  • IA
  • Linearity
  • Mini-invasive
  • Pressure measurement

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