Portable biomedical measurement devices: MoboSens and impedance sensing systems

Human health has become a very important topic as society pays more attention to the people’s quality of life. Therefore, wearable devices with the capability of monitoring various human health indexes and detecting environmental pollution metrics are in great demand. In this thesis, two methods will be discussed in detail. One method that has been developed to perform the tests is called electrochemical sensing, ‘MoboSens’. It uses a smartphone as its sensing platform with an integrated plug-and-play microelectronic ionic sensor, and the whole package is connected through the audio jack on the smartphone. It is used to measure nitrate concentration in water portably. The other method is called impedance sensing measurement. A portable device is used as the platform to combine with the impedance-based sensing technologies. It is designed to detect some species of Escherichia coli and Salmonella bacteria. The work discusses the system-level circuit design for the prototypes of both methods. The testing results from these two sensing methods have been confirmed with other existing analytical testing methods.

Name thesis:degree_name

M.S.

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Electrical & Computer Engr

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2017

Author dc:creator

• Zhang, Han

Contributors dc:contributor

• Liu, Gang Logan

• Smartphone
• System-level circuit design
• Potentiostat
• Impedance sensing
• Electrochemical sensing

Statement dc:rights

• Copyright 2016 Han Zhang

Language dc:language

en

Handle dc:identifier

http://hdl.handle.net/2142/95453

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/95453