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22CIC11- SENSORS AND ACTUATOR DEVICES

UNIT-I OVERVIEW OF SENSORS AND ACTUATORS & TEMPERATURE SENSORS AND THERMAL ACTUATORS

(9)

The five senses: vision, hearing, smell, taste, and touch – Definitions: Sensors & Actuators – Overview of Sensor and Actuator classifications – Performance characteristics of Sensors & Actuators: Transfer Function, Range, Span, Input and Output Full Scale, Resolution, and Dynamic Range - Calibration & Reliability. Thermo resistive sensors: Thermistors, Resistance temperature, and silicon resistive sensors – Thermoelectric sensors – Other Temperature sensors: Optical and Acoustical – Thermo mechanical Sensors and Actuators – Case study: Breath analyzer using temperature

 

UNIT-II OPTICAL SENSORS , ELECTRIC AND MAGNETIC SENSORS AND ACTUATORS

(9)

Principles of Optics: Optical units – Quantum effects – Quantum-based Optical sensors – Photoelectric sensors – Charge coupled device (CCD) based – Thermal-based Optical sensors – Active infrared (AFIR) sensors – Optical Actuators – Case study: Liquid Level Indicator using Optical Sensors. Principles of Electric and Magnetic fields: Basic units – The Electric field: Capacitive Sensors & Actuators – Magnetic sensors and actuators – Magnetoresistance – Magnetostrictive Sensors and Actuators – Magnetometers – Magnetic actuators: Voice Coil Actuators, Motors as Actuators & Magnetic Solenoid Actuators and Magnetic Valves – Case Study: Speed sensing and odometer in a car using smart sensors.

 

 

UNIT-III  MECHANICAL SENSORS AND ACTUATORS

(9)

Definitions and units – Force Sensors: Strain Gauges, Semiconductor Strain Gauges & Tactile Sensors – Accelerometers: Capacitive Accelerometers, Strain Gauge Accelerometers & Magnetic Accelerometers – Pressure Sensors: Mechanical, Piezoresistive, Capacitive & Magnetic – Velocity sensing – Inertial sensors and actuators: Mechanical or Rotor & Optical Gyroscopes – Case study: Tire-pressure monitoring system using smart sensors.

UNIT-IV  ACOUSTIC SENSORS , CHEMICAL SENSORS AND ACTUATORS

(9)

 Definitions and units – Elastic waves and their properties – Microphones: Carbon, Magnetic, Ribbon and Capacitive Microphones – Piezoelectric effect – Piezoelectric Sensors – Acoustic Actuators: Loudspeakers, Headphones and Buzzers - Magnetic and Piezoelectric – Ultrasonic sensors and actuators – Case Study: Ultrasonic parking system. Chemical units and Definitions – Electrochemical sensors: Metal Oxide Sensors and Solid Electrolyte Sensors – Potentiometric smart sensors: Glass Membranes, Soluble Inorganic Salt Membrane and Polymer - Immobilized Ionophore Membranes sensors – Thermochemical, Optical, Mass humidity gas sensors – Chemical Actuators: The Catalytic Converter - The Airbag System using smart sensors – Case study: Water quality monitoring system.

UNIT-V  RADIATION SENSORS, MEMS AND SMART SENSORS AND ACTUATORS

(9)

Radiation sensors: Ionization sensors- Scintillation sensors- Semiconductor radiation detectors. Microwave radiation: Microwave sensors. Antennas as sensors and actuators: General relations- Antennas as sensing elements- Antennas as actuators. MEMS sensors and actuators: MEMS sensors- MEMS actuators- Nanosensors and actuators- Smart sensors and actuators.

 

TOTAL (L:45) : 45 PERIODS

TEXT BOOK:

1.  Nathan Ida, “Sensors, Actuators and their Interfaces - A Multidisciplinary Introduction”, 2020, 2nd Edition, IET, United Kingdom.

REFERENCES:

1.       Jacob Fraden, “Handbook of Modern Sensors Physics, Designs, and Applications”, 2016, 5th Edition, Springer, Switzerland.

2.      Subhas Chandra Mukhopadhyay, Octavian Adrian Postolache, Krishanthi P. Jayasundera, Akshya K. Swain, “Sensors for Everyday Life Environmental and Food Engineering”, 2017, Volume 23, Springer, Switzerland.