Introduction to Sensors  book cover
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1st Edition

Introduction to Sensors




ISBN 9781439808528
Published August 2, 2010 by CRC Press
210 Pages 150 B/W Illustrations

 
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Book Description

The need for new types of sensors is more critical than ever. This is due to the emergence of increasingly complex technologies, health and security concerns of a burgeoning world population, and the emergence of terrorist activities, among other factors. Depending on their application, the design, fabrication, testing, and use of sensors, all require various kinds of both technical and nontechnical expertise.

With this in mind, Introduction to Sensors examines the theoretical foundations and practical applications of electrochemical, piezoelectric, fiber optic, thermal, and magnetic sensors and their use in the modern era. Incorporating information from sensor-based industries to review current developments in the field, this book:

  • Presents a complete sensor system that includes the preparation phase, the sensing element and platform, and appropriate electronics resulting in a digital readout
  • Discusses solid-state electronic sensors, such as the metal oxide semiconductor (MOS) capacitor, the micromachined capacitive polymer, and the Schottky diode sensors
  • Uses the two-dimensional hexagonal lattice as an example to detail the basic theory associated with piezoelectricity
  • Explores the fundamental relationship between stress, strain, electric field, and electric displacement

The magnetic sensors presented are used to determine measurands such as the magnetic field and semiconductor properties, including carrier concentration and mobility. Offering the human body and the automobile as examples of entities that rely on a multiplicity of sensors, the authors address the application of various types of sensors, as well as the theory and background information associated with their development and the materials used in their design. The coverage in this book reveals the underlying rationale for the application of different sensors while also defining the properties and characteristics of each.

Table of Contents

Introduction
The Human Body as a Sensor System
Sensors in an Automobile
Classification of Sensors
Example of a Gas Sensor: The Taguchi Sensor
The Sensor as a Passive or Active Element
The Sensor as Part of a Measurement System
Sensor Properties
Historical Development of Sensors
Sensor System

Electrochemical Sensors
Conductimetric Sensors
Semiconducting Metal Oxide Sensors
Chemiresistors
Other Solid-State Electrochemical Gas Sensors
Concluding Remarks

Piezoelectric Sensors
Classification of Piezoelectric Sensors
Piezoelectric Materials as Intelligent or Smart Materials
The Piezoelectric Effect
The Properties of Nonpiezoelectric and Piezoelectric Materials
Piezoelectric Stress/Pressure Sensor
Piezoelectric Accelerometer
Active Piezoelectric Sensors
Bulk Acoustic Wave Sensor
Bulk Acoustic Wave Sensor Response Measurement
Surface Acoustic Wave Sensors

Fiber Optic Sensors
Theory
Light Leaking and Absorption in the Fiber Optic Link
Fiber Link and Materials
Communication Applications
Fiber Optic Sensors

Thermal Sensors
Resistance Thermometers
Theory of Metal-Based Thermometers
Properties of Metal-Based Thermometers
Theory of Semiconductor-Based Thermometers
Thermistor Properties
Concluding Remarks

Magnetic Sensors
Natural and Man-Made Magnetic Fields
Materials Used in Magnetic Sensors
Principles of Magnetic Sensors
Solid-State Magnetic Sensors

Index

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