JNTUA B.Tech. R20 Regulations

########## JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY ANANTAPUR B.Tech IV-I Sem L T P C 3 0 0 3 (20A56702) SENSORS AND ACTUATORS FOR ENGINEERING APPLICATIONS (OPEN ELECTIVE-III)

########## Course Course Objectives

- • To provide exposure to various kinds of sensors and actuators and their engineering applications.
- • To impart knowledge on the basic laws and phenomenon behind the working of sensors and actuators
- • To enlighten the operating principles of various sensors and actuators
- • To educate the fabrication of sensors
- • To identify the required sensor and actuator for interdisciplinary application

########## Course Outcomes:

- • To recognize the need of sensors and actuators
- • To understand working principles of various sensors and actuators
- • To identify different type of sensors and actuators used in real life applications
- • To exploit basics in common methods for converting a physical parameter into an electrical quantity
- • To make use of sensors and actuators for different applications

UNIT I Introduction to Sensors and Actuators : Types of sensors: temperature, pressure, strain, active and passive sensors, General Sensors : Types of sensors: temperature, pressure, strain, active and passive sensors, General Sensors characteristics of sensors (Principles only), Materials used and their fabrication process: Deposition: Chemical Vapor Deposition, Pattern: photolithography and Etching: Dry and Wet Etching. Functional diagram of actuators, Types of actuators and their basic principle of working: Actuators: Hydraulic, Pneumatic, Mechanical, Electrical, Magnetic, Electromagnetic, piezo-electric and piezo- resistive actuators, Simple applications of Actuators.

UNIT II Temperature and Mechanical Sensors : Types of temperature sensors and their basic principle of working: Thermo- Temperature Sensors : Types of temperature sensors and their basic principle of working: Thermo- Temperature Sensors resistive sensors: Thermistors, Resistance temperature sensors, Silicon resistive sensors, Thermo- electric sensors: Thermocouples, PN junction temperature sensors : Types of Mechanical sensors and their basic principle of working: Force sensors: Mechanical Sensors Sensors strain gauges, tactile sensors, Pressure sensors: semiconductor, piezoresistive, capacitive, VRP.

UNIT III Optical and Acoustic Sensors : Basic principle and working of: Photodiodes, Phototransistors and Photo-resistors Optical Sensors : Basic principle and working of: Photodiodes, Phototransistors and Photo-resistors Optical Sensors based sensors, Photomultipliers, Infrared sensors: thermal, PIR, thermopiles : Principle and working of Ultrasonic sensors, Piezo-electric resonators, Acoustic Sensors Sensors Microphones.

########## UNIT IV Magnetic, Electromagnetic Sensors and Actuators

Motors as actuators (linear, rotational, stepping motors), magnetic valves, inductive sensors (LVDT, RVDT, and Proximity), Hall Effect sensors, Magneto-resistive sensors, Magneto-strictive sensors and actuators, Voice coil actuators (speakers and speaker-like actuators).

UNIT V Chemical and Radiation Sensors : Principle and working of Electro-chemical, Thermo-chemical, Gas, pH, Humidity Chemical Sensors : Principle and working of Electro-chemical, Thermo-chemical, Gas, pH, Humidity Chemical Sensors and moisture sensors. : Principle and working of Ionization detectors, Scintillation detectors, Geiger- Radiation Sensors Sensors Mueller counters, Semiconductor radiation detectors and Microwave sensors (resonant, reflection, transmission)