Three dimensional thermal sensor for intravascular flow monitoring

Rui Tang, Hai Huang, Yong Mo Yang, Jonathon Oiler, Mengbing Liang, Hongyu Yu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

A novel design and assembly technology was developed for a three-dimensional (3-D) thermal flow sensor based on convective heat transfer to reduce detection error caused by position variation of a sensor inside the flow of narrow and curved geometries, such as coronary artery. The 3-D sensor has three independent sensing elements equally distributed around the catheter tube. This arrangement introduces three independent information channels, and cross-comparisons were utilized to provide accurate flow measurement. The resistance of the sensing elements was measured at approximately 1-1.2 KΩ with the temperature coefficient of resistance (TCR) at 0.086 %/°C. Using a constant-current circuit, the three sensing elements were heated to about 10°C above ambient temperature. Flow testing was implemented in a pipe channel at two positions: on the wall or along the center line. When the sensor was in contact with the pipe, output voltage of the sensing element facing the pipe wall changed less than 0.6 mV. Meanwhile, other two sensing elements which were facing the flow field had a maximum output change of 3.3-3.5 mV. Placing the sensors at the center line of the pipe resulted in an almost equal output voltage change for all sensing elements. Therefore, we demonstrated the capability of 3-D thermal flow sensor for detecting the position of the catheter in the flow channel, thereby providing an accurate flow measurement.

Original languageEnglish (US)
Title of host publication2013 Transducers and Eurosensors XXVII
Subtitle of host publicationThe 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013
Pages1875-1878
Number of pages4
DOIs
StatePublished - Dec 1 2013
Event2013 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013 - Barcelona, Spain
Duration: Jun 16 2013Jun 20 2013

Publication series

Name2013 Transducers and Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013

Other

Other2013 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013
CountrySpain
CityBarcelona
Period6/16/136/20/13

Keywords

  • 3-D packaging
  • Micro-electro-mechanical systems (MEMS) thermal sensors
  • polymer

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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    Tang, R., Huang, H., Yang, Y. M., Oiler, J., Liang, M., & Yu, H. (2013). Three dimensional thermal sensor for intravascular flow monitoring. In 2013 Transducers and Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013 (pp. 1875-1878). [6627157] (2013 Transducers and Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013). https://doi.org/10.1109/Transducers.2013.6627157