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ECE699 – 004 Sensor Device Technology

This chapter provides an introduction to sensor devices, their significance, and need in various industries such as healthcare, military, automotive, and more. It covers the different types of sensors, their properties, and their role in wearable technology. The review of wearable sensor arrays for perspiration analysis is also discussed.

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ECE699 – 004 Sensor Device Technology

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  1. ECE699 – 004Sensor Device Technology Chapter I Introduction of Sensors Fall 2018 George Mason University

  2. 1.1 Background and need

  3. Berkley Sensor & Actuator Center • Glucose • Lactate 2016 Gao, W. et al. Fully integrated wearable sensor arrays for multiplexed in situ perspiration analysis. Nature529, 509–514 (2016).

  4. Will be largely driven by wearable sensors (projected $4.5B by 2025)* • Personal fitness (FitBit, Apple iWatch, many others…) • Home health monitoring • Medical diagnosis (Hospitals, clinics) • Military (Environmental awareness& physiological state) • Chem/Bio sensing has very large presence • Other industries: Automotive, environmental monitoring, food/beverage Other Inertial Measurement Unit Inertial Measurement Unit Biopotential Optical Chemical Biopotential Stretch/Pressure Chemical Optical Other Stretch/ Pressure Relative Market Size by Wearable Sensor Type in 2020 Growth Rates Summary by Sensor Type, 2015 - 2025

  5. The Need for Chem/Bio Sensors Medical Diagnosis & Health Monitoring Environmental Monitoring Aerospace • Hazards: fuel leaks, fires, air quality • Astronaut health: stress indicators, mental state • Cheap, accurate, rapid • Remote basic diagnosis Wearables / IoT Military & Homeland Security Food & Beverage Quality • Explosive compounds • Chemical warfare agents • Physiological state • Food spoilage • Bacteria, disease • Quality control • Sweat analysis, biological markers, stress • Networked sensors

  6. 1.2 The human body as a sensor system

  7. 1.3 Sensors in an automobile

  8. Review: “Fully integrated wearable sensor arrays for multiplexed in situ perspiration analysis” Nature 529, 509 (2016) Wearable plastic-based Integration platform for • signal transduction • Conditioning circuits (amplification and filtering) • Processing unit • Wireless transmission

  9. Shared reference Ag/Ag+

  10. Temperature effect

  11. On-body Real-time perspiration analysis during stationary cycling

  12. Outdoor measurement

  13. Your review on apple watch sensors? Homework 1 – write a report on the sensors in Apple Watch.

  14. 1.7 The measurement systema sensor in a system (circuit) A standalone device A system to optimize the sensing performance

  15. 1.8 Sensor Properties

  16. An example of a nonlinear sensor

  17. A complete response

  18. An ideal process for sensor R/D

  19. Homework 2 problem

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