Portable biomedical measurement devices: MoboSens and impedance sensing systems

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

Zhang, Han ; Liu ; Gang Logan

关键词: Smartphone;    System-level circuit design;    Potentiostat;    Impedance sensing;    Electrochemical sensing;   

Others  :  https://www.ideals.illinois.edu/bitstream/handle/2142/95453/ZHANG-THESIS-2016.pdf?sequence=1&isAllowed=y

美国|英语

来源: The Illinois Digital Environment for Access to Learning and Scholarship

【 摘 要 】

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.