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Electrical impedance tomography (EIT) is a technique employed in tactile sensing to create an image of impedance changes within a continuous sensor using electrodes placed only at the perimeter. This is advantageous for soft sensing “e-skins” being developed for applications such as robotics and human-machine interactions. EIT was originally developed for medical diagnostics and has more recently been adopted for tactile imaging, which has distinct requirements and challenges. This book explains the fundamentals of EIT at a basic level, without requiring a high level of mathematical expertise, making it an accessible text for students and newcomers to the field. It also covers applications and challenges of the method, recent developments, and practical implications.
Key Features:
- Introduction at a basic level for newcomers to the field.
- Written to be accessible to the sensing community
- Explanations accompanied by images and examples.
- All the main concepts explained in one place.
- Focus on tactile imaging issues.
Elisabeth Smela is a Professor of Mechanical Engineering at the University of Maryland. She received a BS in physics from MIT and aPhD in electrical engineering from the University of Pennsylvania. Dr Smela then worked as a research scientist in Linköping, Sweden and in Risø, Denmark before becoming Vice President of Research and Development at Santa Fe Science and Technology, NM. Dr Smela's research interests have focused on polymeric and cell-based sensors and actuators. She has served as Associate Dean for Faculty and Graduate Affairs, Equity Administrator, and Diversity Officer at the University of Maryland. She spent a year as a Jefferson Science Fellow at the Department of State to stand up the US-ASEAN Smart Cities Network. She has recently been working with a group of engineering faculty to better integrate sustainability concepts throughout the undergraduate curriculum.
Preface
Acknowledgements
Author biographies
Symbols
Frequently used acronyms
Chapter 1 Tactile imaging with electronic skins
Chapter 2 Use of electrical impedance tomography for tactile imaging
Chapter 3 Simulation conditions and performance metrics
Chapter 4 In Layperson’s terms, how does electrical impedance tomography work?
Chapter 5 Effects of the hyperparameter
Chapter 6 Noise
Chapter 7 Experimental decisions
Appendix A: EIT for structural health monitoring
Appendix B: Eigen-images
Appendix C: Sensitivity maps of J for all I–M, first seven measurement positions
Appendix D: Supplementary information related to chapter 4
Appendix E: Supplementary information related to chapter 5
Appendix F: Supplementary information related to chapter 6
Appendix G: Supplementary information related to chapter 7