1. ECE699 – 004 Sensor 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. Nature 529, 509–514 (2016).

4. Inertial Measurement Unit
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
Inertial Measurement Unit
Other
Inertial Measurement Unit
Biopotential
Optical
Chemical
Stretch/Pressure
Biopotential
Chemical
Optical
Other
Stretch/
Pressure
Growth Rates Summary by Sensor Type,
Relative Market Size by Wearable Sensor Type in 2020

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
Food & Beverage Quality
Military & Homeland Security
Food spoilage
Bacteria, disease
Quality control
Explosive compounds
Chemical warfare agents
Physiological state
Sweat analysis, biological markers, stress
Networked sensors

7. 1.2 The human body as a sensor system

8. 1.3 Sensors in an automobile

12. Wearable plastic-based Integration platform for signal transduction
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

14. Shared reference Ag/Ag+

21. Temperature effect

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

27. Outdoor measurement

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

32. 1.7 The measurement system a sensor in a system (circuit)
A standalone device
A system to optimize the sensing performance

33. 1.8 Sensor Properties

34. An example of a nonlinear sensor

35. A complete response

36. An ideal process for sensor R/D

37. Homework 2 problem