Systems for Printed Flexible Sensors : Design and Implementation / Tarikul Islam, Subhas Mukhopadhyay, and Boby Boby George.

Format:

Book

Author/Creator:

Islam, Tarikul, author.

Mukhopadhyay, Subhas, author.

Boby George, Boby, author.

Series:

IOP Series in Sensors and Sensor Systems Series

Language:

English

Subjects (All):

Engineering instruments.

Physical Description:

1 online resource (305 pages)

Edition:

First edition.

Place of Publication:

Bristol, England : IOP Publishing, [2022]

Summary:

Flexible devices are gradually emerging as an alternative viable low-cost user-friendly technology for wearable health care services in different fields. This book provides readers with a single platform to develop a system using flexible sensors integrating with interfacing/signal conditioning, data conversion and communication circuits.

Contents:

Intro

Preface

Acknowledgment

Editors&amp

#x02019

biographies

Tarikul Islam

Subhas Chandra Mukhopadhyay

Boby George

List of contributors

Chapter 1 A review on flexible sensors for soft robotics

1.1 Introduction

1.2 Important characteristics required for soft robotics sensors

1.3 Sensing techniques employed to develop soft robotic sensors

1.3.1 Magnetic sensors

1.3.2 Inductive sensors

1.3.3 Capacitive sensors

1.3.4 Strain gauge/resistance-based sensors

1.3.5 Eddy current sensors

1.3.6 Optical sensors

1.4 Interfacing circuits and associated measurement systems

1.5 Comparison of different sensing techniques

1.6 Challenges and future directions

References

Chapter 2 Recent advances in laser-induced graphene (LIG)-based flexible electronic devices

2.1 Introduction

2.1.1 Characterization techniques

2.2 LIG fabrication

2.2.1 LIG chemical modification

2.3 LIG in electronic devices

2.3.1 LIG-based miniaturized fuel cells

2.3.2 LIG-based miniaturized energy-storage devices

2.3.3 LIG heaters

2.3.4 LIG sensors

2.4 LIG in wearable and smart devices

2.5 Conclusion and future outlook

Chapter 3 Printable flexible sensors for hydration monitoring and moisture measurement in concrete structures

3.1 Introduction

3.2 Hydration and its monitoring using flexible sensors

3.2.1 Ultrasonic technique

3.2.2 Hydration monitoring by temperature measurement

3.3 Hydration of concrete using transformer principle

3.4 Determination of the response parameters of concrete

3.4.1 Fringing field flexible capacitive sensors for hydration monitoring

3.5 Flexible sensors for moisture measurement in concrete

3.5.1 Fringing field capacitive sensors for concrete moisture measurement

3.5.2 Theory of the proposed method.

3.5.3 Modeling of the sensor

3.5.4 Experimental moisture measurement results in cement slab

3.6 Conclusion

Chapter 4 Resistive sensor interface

4.1 Introduction

4.2 Auto-balancing interface circuits

4.2.1 Circuit architecture and operation

4.2.2 Circuit analysis

4.2.3 Prototype design and experimental results

4.2.4 Experimental result with sensor

4.2.5 Discussion

4.3 Auto-balancing interface for resistive sensor array

4.3.1 Circuit architecture and operation

4.3.2 Circuit analysis

4.3.3 Prototype design and experimental results

4.3.4 Experimental measurement with a silicon nanowire array

4.3.5 Discussion

4.3.6 Summary

4.4 Conclusion and industrial aspects

4.5 Future of sensing technology

Chapter 5 Interfacing circuit for capacitive sensors

5.1 Introduction

5.2 Capacitive sensors: basic principles

5.2.1 Variable gap type

5.2.2 Variable area type

5.2.3 Variable dielectric type

5.2.4 Differential configuration

5.3 Sensor interfacing techniques

5.3.1 Capacitance-to-frequency converter

5.3.2 Continuous-time interface

5.3.3 Discrete-time interface

5.3.4 Chopper stabilization

5.3.5 Auto-zeroing (AZ) technique

5.3.6 Correlated double-sampling

5.4 Capacitance-to-digital converters

5.4.1 Dual-slope CDC

5.4.2 Succesive approximation register type

5.4.3 Sigma delta modulator-type

5.5 Sensor mismatch cancellation

5.5.1 Capacitance array

5.5.2 Voltage-mode charge balance method

5.5.3 Auto-cancellation of sensor mismatch

5.6 Case study: integrated capacitance measurement system

5.6.1 Circuit components

5.7 Conclusion

Chapter 6 Interface electronics and conditioning circuits for triboelectric flexible sensors

6.1 Introduction

6.2 Characteristics of triboelectric sensors.

6.3 Block structure of interface electronics

6.3.1 Preamplifier

6.3.2 Filtering

6.4 Design examples of analog front-end

6.5 Case study: circuitry for a grating-patterned triboelectric human-machine interface

6.5.1 Design and working mechanism of a triboelectric sensor

6.5.2 Signal-conditioning circuit

6.5.3 Design of the printed circuit board

6.5.4 Experimental results

6.6 Summary

Chapter 7 Flexible interfacing circuits for wearable sensors and wireless communication

7.1 Introduction

7.2 Wearable sensors and interfacing circuits

7.2.1 Non-self-powered sensors and interfacing circuits

7.2.2 Chemical sensors and interfacing circuits

7.2.3 Self-powered systems and interfacing circuits

7.3 Interfacing circuits for wireless communication

7.4 Conclusion and future perspective

Chapter 8 Compact and efficient wireless power and information transfer systems for IoT sensors and implants

8.1 Introduction

8.2 Examples from the literature

8.3 Figure-8 inductor

8.3.1 Structure of a figure-8 inductor

8.3.2 Self-inductance of the figure-8 inductor

8.3.3 Losses of the figure-8 inductor

8.3.4 Mutual inductance between two figure-8 inductors

8.3.5 Cross-coupling with DGS inductor

8.4 System design and discussions

8.4.1 System layout

8.4.2 Fabrication

8.4.3 Measurement category 1: S-parameters

8.4.4 Measurement category 2: misalignment

8.4.5 Measurement category 3: simultaneous wireless power and information transfer

8.5 Conclusion

Chapter 9 Analysis and design considerations of relaxation-oscillator-based flexible sensor circuits

9.1 Introduction

9.2 Relaxation-oscillator-based circuits

9.2.1 Conventional relaxation-oscillator-based interface

9.2.2 Analysis for time period T.

9.2.3 Conventional relaxation-oscillator-based interface for bridge sensors

9.2.4 Relaxation oscillator circuits for leaky capacitive sensors

9.2.5 Relaxation oscillator circuit for differential capacitive sensors

9.3 Performance analysis with component non-idealities

9.4 Design criteria

Chapter 10 Sensor tags for wireless body-centric communication: challenges and opportunities

10.1 Introduction

10.1.1 Antenna design

10.1.2 Conformability of body-worn antenna

10.1.3 Communication through multiple textile layers

10.2 Existing challenges

10.3 Some solutions

10.3.1 Electromagnetic-band-gap-incorporated antenna design

10.3.2 Determination of effective dielectric constant

10.3.3 Conformability analysis of conformal electromagnetic band gap surfaces

10.4 Compact electromagnetic-band-gap-based antenna for smartwatch applications

10.4.1 Introduction to electromagnetic band gaps

10.4.2 Lumped-element circuit model

10.4.3 Interdigital electrodes unit cell

10.4.4 Array performance enhancement

10.4.5 Determination of effective dielectric constant

10.4.6 Conformal electromagnetic band gap surfaces

Chapter 11 The role of capacitive sensors for condition monitoring of transformer insulation

11.1 Introduction

11.2 Literature review

11.3 Development of a capacitive sensor for condition assessment of an oil-immersed power transformer's insulation

11.3.1 Materials required for the fabrication of the 2-FAL sensor

11.3.2 Process of fabrication

11.3.3 Experimental setup

11.4 Electrical equivalent model of the developed sensor

11.4.1 Electrical equivalent circuit of the sensor

11.4.2 Relation between the sensor's capacitance and the concentration of 2-FAL

11.5 Performance of the sensor

11.5.1 Response of the sensor at different frequencies.

11.5.2 Response of the sensor with time

11.5.3 Calibration of the sensor response

11.5.4 Statistical analysis

11.5.5 Repeatability and drift study of the sensor response

11.6 Modification of the sensor's structure to improve its sensitivity in detecting 2-FAL concentrations in transformer oil

11.7 Performance evaluation of the comb sensor

11.7.1 Response of the comb sensor at different frequencies

11.7.2 Response of the comb sensor with time

11.7.3 Calibration of the comb sensor response

11.7.4 Repeatability of the comb sensor response

11.8 Conclusion

References.

Notes:

Description based on publisher supplied metadata and other sources.

Description based on print version record.

ISBN:

0-7503-4607-8

OCLC:

1345290529