Integration of Low-Power ASIC and MEMS Sensors for Monitoring Gastrointestinal Tract Using a Wireless Capsule System

Application specific integrated circuit (ASIC); Antennas; Application specific integrated circuits; Capacitive sensors; Frequency modulation; Microsystems; Modulation; Printed circuit boards; Pulse width modulation; Voltage control; Conformal antennas; Gastrointestinal tract; Interface circuits; Lower-power consumption; Real time measurements; System miniaturization; Wireless capsule; Wireless capsule application; Radio transceivers

Abstract :

[en] This paper presents a wireless capsule microsystem to detect and monitor the pH, pressure, and temperature of the gastrointestinal tract in real time. This research contributes to the integration of sensors (microfabricated capacitive pH, capacitive pressure, and resistive temperature sensors), frequency modulation and pulse width modulation based interface IC circuits, microcontroller, and transceiver with meandered conformal antenna for the development of a capsule system. The challenges associated with the system miniaturization, higher sensitivity and resolution of sensors, and lower power consumption of interface circuits are addressed. The layout, PCB design, and packaging of a miniaturized wireless capsule, having diameter of 13 mm and length of 28 mm, have successfully been implemented. A data receiver and recorder system is also designed to receive physiological data from the wireless capsule and to send it to a computer for real-time display and recording. Experiments are performed in vitro using a stomach model and minced pork as tissue simulating material. The real-time measurements also validate the suitability of sensors, interface circuits, and meandered antenna for wireless capsule applications. © 2013 IEEE.

Disciplines :

Electrical & electronics engineering

Author, co-author :

Arefin, M. S.; Department of Electrical and Computer Systems Engineering, Monash University, Melbourne, VIC 3800, Australia

Redouté, Jean-Michel ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes microélectroniques intégrés

Yuce, M. R.; Department of Electrical and Computer Systems Engineering, Monash University, Melbourne, VIC 3800, Australia

Language :

English

Title :

Integration of Low-Power ASIC and MEMS Sensors for Monitoring Gastrointestinal Tract Using a Wireless Capsule System

Publication date :

2018

Journal title :

IEEE Journal of Biomedical and Health Informatics

ISSN :

2168-2194

eISSN :

2168-2208

Publisher :

Institute of Electrical and Electronics Engineers Inc.

Volume :

Issue :

Pages :

87-97

Peer reviewed :

Peer Reviewed verified by ORBi

Funders :

Monash University [AU]

Available on ORBi :

since 04 February 2019

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