Advanced interfacing techniques for sensors : measurement circuits and systems for intelligent sensors / Boby George, Joyanta Kumar Roy, V. Jagadeesh Kumar, Subhas Chandra Mukhopadhyay.

Includes bibliographical references.

1 Sensors and Their Characteristics; Abstract; 1 Introduction to Sensors; 2 Sensors and Transducers; 3 Important Characteristics of Sensors; 3.1 Resolution of a Sensor; 3.2 Range (Full Scale) of a Sensor; 3.3 Safe Range (Overload Factor) of a Sensor; 3.4 Accuracy of a Sensor; 3.5 Gain Error, Offset and Offset Drift of a Sensor; 3.6 Linear and Nonlinear Characteristics of a Sensor; 3.7 Transient and Steady State Responses of a Sensor; 3.8 Settling Time (Response Time) of a Sensor; 3.9 Slew Rate and Rise Time of a Sensor. 3.10 'Static' and 'Dynamic' Characteristics of a Sensor3.11 Frequency Response Characteristics of a Sensor; 3.12 Impulse Response Characteristics of a Sensor; 4 Model Based Analysis of a Sensor's Characteristic; 4.1 Modeling a Sensor; 4.2 The Laplace Transform; 4.3 Sensor's Performance Analysis Using Laplace Transform; 4.4 Analysis of the Behavior of a Sensor Using Transfer Function; 4.5 Operating Environment Based Characteristics of a Sensor; 5 Classification of Sensors; 5.1 Active and Passive Sensors; 5.2 Classification Based on a Sensor's Parameter(s); 6 Exercises. 2 Advanced Interfacing Techniques for the Capacitive SensorsAbstract; 1 Introduction; 2 Capacitive Sensors for Sensing Applications; 2.1 Parallel Plate Capacitive Sensor; 2.2 Cylindrical Coaxial Capacitive Sensor; 2.3 Cylindrical Cross-Capacitor; 3 Precautions Necessary for the Use of the Capacitive Sensors; 3.1 Shielding of the Capacitive Sensor; 3.2 Guarding of the Capacitor Electrodes; 3.3 Shielded Cable and the Cable Length; 4 Lossy Capacitive Sensor; 5 Advancement in the Design of Electronics Interface for the Capacitive Sensors; 5.1 Introduction. 5.2 Interface Electronics Circuit for the Capacitive Sensors5.3 Oscillator Based Transformer Ratio Arm Bridge for Interfacing the Capacitive Sensor; 5.3.1 Working of the Interface Electronic; 5.3.2 Capacitance to Frequency Converter; 5.3.3 Hardware Realization of the Circuit and Determination of the Response Characteristics of the Humidity Sensor; 5.4 A Microcontroller Compatible Oscillator Based Active Bridge Circuit for Interfacing Capacitive Sensors; 5.4.1 Working of the Circuit; 5.4.2 Experimental Verification of the Interface Circuit. 5.5 An Impedance Measurement Technique for Wide-Range Lossy Capacitive Sensors5.5.1 Working of the Interface; 5.5.2 An Autobalance Active Bridge; 5.5.3 Experimental Results of the First Electronic Circuit; 5.5.4 Experimental Results of the Autobalancing Bridge; 5.6 Current Mode Oscillator Circuit for the Grounded Capacitive Sensors; 5.6.1 Current Conveyer Based Oscillator; 5.6.2 Experimental Verification of the Interface Circuit; 6 Conclusions; References; 3 A Simple Embedded Sensor: Excitation and Interfacing; Abstract; 1 Introduction; 2 Type of Sensors; 2.1 Resistive Sensors.

This book presents ways of interfacing sensors to the digital world, and discusses the marriage between sensor systems and the IoT: the opportunities and challenges. As is often affected by noise and interference, the book presents effective schemes for recovering the data from a signal that is buried in noise. It also explores interesting applications in the area of health care, un-obstructive monitoring and the electronic nose and tongue. It is a valuable resource for engineers and scientists in the area of sensors and interfacing wanting to update their knowledge of the latest developments in the field and learn more about sensing applications and challenges.