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Broadband Reflectometry for Enhanced Diagnostics and Monitoring Applications 2011 ed. [Kõva köide]

  • Formaat: Hardback, 150 pages, kõrgus x laius: 235x155 mm, kaal: 920 g, XVIII, 150 p., 1 Hardback
  • Sari: Lecture Notes in Electrical Engineering 93
  • Ilmumisaeg: 27-May-2011
  • Kirjastus: Springer-Verlag Berlin and Heidelberg GmbH & Co. K
  • ISBN-10: 3642202322
  • ISBN-13: 9783642202322
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  • Formaat: Hardback, 150 pages, kõrgus x laius: 235x155 mm, kaal: 920 g, XVIII, 150 p., 1 Hardback
  • Sari: Lecture Notes in Electrical Engineering 93
  • Ilmumisaeg: 27-May-2011
  • Kirjastus: Springer-Verlag Berlin and Heidelberg GmbH & Co. K
  • ISBN-10: 3642202322
  • ISBN-13: 9783642202322
This book examines the adoption of broadband microwave reflectometry (BMR)-based methods for diagnostics and monitoring applications. It details the different approaches of BMR and investigates major practical applications.

This book is dedicated to the adoption of broadband microwave reflectometry (BMR)-based methods for diagnostics and monitoring applications. This electromagnetic technique has established as a powerful tool for monitoring purposes; in fact, it can balance several contrasting requirements, such as the versatility of the system, low implementation cost, real-time response, possibility of remote control, reliability, and adequate measurement accuracy.Starting from an extensive survey of the state of the art and from a clear and concise overview of the theoretical background, throughout the book, the different approaches of BMR are considered (i.e., time domain reflectometry - TDR, frequency domain reflectometry - FDR, and the TDR/FDR combined approach) and several applications are thoroughly investigated.The applications considered herein are very diverse from each other and cover different fields. In all the described procedures and methods, the ultimate goal is to endow them with a significant performance enhancement in terms of measurement accuracy, low cost, versatility, and practical implementation possibility, so as to unlock the strong potential of BMR.
1 Introduction
1(10)
1.1 The Concept Behind This Book
1(2)
1.2 Survey of Typical Applications of BMR
3(2)
1.2.1 Electrical Components Characterization: Testing and Localization of Faults
3(1)
1.2.2 Measurements on Soil for Agricultural and Geotechnical Purposes
4(1)
1.2.3 Civil Engineering and Infrastructural Monitoring
4(1)
1.2.4 Dielectric Spectroscopy Measurements
5(1)
1.2.5 Applications in Industrial Monitoring
5(1)
1.3 Organization and Content of the Book
5(2)
References
7(4)
2 Basic Physical Principles
11(14)
2.1 Transmission Line Basics
11(4)
2.1.1 Coaxial Transmission Line
12(2)
2.1.2 Bifilar Transmission Line
14(1)
2.1.3 Microstrip Line
14(1)
2.2 Reflected Waves
15(1)
2.3 Characteristic Parameters of Electrical Networks
16(3)
2.4 Reflectometry Measurements for Dielectric Spectroscopy
19(4)
2.4.1 Dielectric Relaxation Models
20(3)
References
23(2)
3 Broadband Reflectometry: Theoretical Background
25(26)
3.1 Broadband Microwave Reflectometry: Theoretical Background
25(1)
3.2 Time Domain Reflectometry (TDR)
26(7)
3.2.1 Typical TDR Measurements
29(1)
3.2.2 Typical TDR Instrumentation
30(3)
3.3 Frequency Domain Reflectometry (FDR)
33(2)
3.4 TD/FD Combined Approach
35(2)
3.4.1 Preserving Measurement Accuracy in the TDR/FDR Transformation
36(1)
3.5 The Sensing Element
37(4)
3.6 Strategies for Enhancing Accuracy in BMR Measurements
41(6)
3.6.1 Calibration Procedure in Time Domain
41(1)
3.6.2 Calibration Procedure in Frequency Domain
42(1)
3.6.3 Time-gated Frequency Domain Approach
43(1)
3.6.4 Transmission Line Modeling and Inverse Modeling
44(3)
References
47(4)
4 Quantitative and Qualitative Characterization of Liquid Materials
51(34)
4.1 Introduction
51(2)
4.2 Estimation of Levels and Permittivities of Industrial Liquids Directly from TDR
53(7)
4.2.1 Probe Design and Realization
54(2)
4.2.2 Sources of Errors and Compensation Strategies in TD
56(2)
4.2.3 Validation of the Method on Dielectric Liquids
58(2)
4.3 Estimation of Levels and Permittivities of Industrial Liquids Using the TD/FD Approach
60(11)
4.3.1 Transmission Line Modeling of the Measurement Cell
61(1)
4.3.2 Measurement Setup and Enhanced Probe Design
62(2)
4.3.3 Experimental Validation of the Method
64(7)
4.4 Dielectric Spectroscopy of Edible Liquids: The Vegetable Oils Case-Study
71(11)
4.4.1 Design of the Measurement Cell and Transmission Line Modeling
72(5)
4.4.2 Experimental Results for Vegetable Oils
77(5)
References
82(3)
5 Qualitative Characterization of Granular Materials and Moisture Measurements
85(48)
5.1 Introduction
85(2)
5.2 Dielectric Models for the Estimation of Water Content
87(2)
5.3 Evaluation of Moisture Content Directly from TDR
89(8)
5.3.1 Details on the Experimental Procedure
90(1)
5.3.2 Uncertainty Evaluation for Apparent Dielectric Permittivity Measurement and Individuation of the Calibration Curves
91(2)
5.3.3 Measurement Results and Instrumental Performance Comparison
93(4)
5.4 Moisture Content Measurements through TD/FD Combined Approach and TL Modeling
97(10)
5.4.1 Moisture Content Measurements through Dielectric Mixing Model
97(1)
5.4.2 Triple-Short Calibration Procedure
98(9)
5.5 Enhancements of TDR-Based Static Electrical Conductivity Measurement
107(12)
5.5.1 Traditional TDR-Based Static Electrical Conductivity Measurement
108(2)
5.5.2 Innovative Calibration Strategies: The TLM and the ICM Methods
110(5)
5.5.3 Validation of the Methods
115(4)
5.5.4 Practical Considerations
119(1)
5.6 Noninvasive Moisture Content Measurements
119(9)
5.6.1 Basic Theory of Microstrip Antennas
120(2)
5.6.2 Experimental Validation of the Method: Measurements on Moistened Sand Samples
122(6)
References
128(5)
6 BMR Characterization of Antennas through the Combined TD/FD Approach
133
6.1 Introduction
133(1)
6.2 Measurement Setup for the Validation of the Method
134(1)
6.3 Acquisition in Time Domain
135(2)
6.4 RFId Antenna Results
137(8)
6.4.1 Practical Guidelines for Retrieving Accurate Measurements
138(7)
6.5 Biconical Antenna Results
145(2)
References
147