Analysis of Timing Behavior for Wireless Synchronization of Bioimpedance Analog Front End Sensors

Abstract

Electronic Thesis or DissertationBioimpedance spectroscopy is a noninvasive and cost-efficient technique used in imaging, body composition analysis, tissue health assessment, and more. Compact, low-cost impedance analyzers such as the MAX30009 have permitted development of wearable bioimpedance sensors for health monitoring applications. Multi-site bioimpedance measurement can offer insight in biological processes throughout the body, but the accuracy of multi-site analysis depends on the timing synchronization of distributed nodes. This thesis aims to analyze the effects of timing errors in multi-site bioimpedance measurement and develop a wirelessly synchronized bioimpedance sensor network to address the needs of modern bioimpedance applications. Bluetooth-enabled microcontrollers are used with MAX30009 devices and real-time clocks to achieve initial synchronization and low clock drift