SENSORS AND TRANSDUCERS
- Course Code 18EE647
- CIE Marks 40
- Teaching Hours/Week (L:T:P) (3:0:0)
- SEE Marks 60
- Credits 03
- Exam Hours 03
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Course Learning Objectives:
Explain the use of gauges and transducers to measure pressure, direction, distance and electromagnetic radiations Explain the transducers used for temperature sensing, and for the measurement of sound.
Explain the sensors and transducers used for the measurement of mass, volume and environmental
quantities.
Module-1
Strain and Pressure: Mechanical strain, Interferometry, Fibre optic methods, pressure gauges, low gaspressures, Ionization gauges, Transducer use.
Position, direction, distance, and motion: Position, Direction, Distance measurement, Distance traveled, Accelerometer systems, Rotation.
Module-2
Light and associated radiation: Nature of light, Colour temperature, Light flux, Photosensors, Photoresistors and photoconductors, Photodiodes, Phototransistors, Photovoltaic devices, Fibre – optic applications, Light transducers, Solid-state transducers, Liquid crystal displays (LCD), Light valves, Image transducers, Radio waves.Module-3
Temperature sensors and thermal transducers: Heat and temperature, The bimetallic strip, Liquid and gas expansion, Thermocouples, Metal – resistance sensors, Thermistors, Radiant heat energy sensing, Pyroelectric detectors, Thermal transducers, Thermal to electrical transducers.Module-4
Sound, infrasound and ultrasound: Principles, Audio electrical sensors and transducers, Electrical toaudio transducers.
Module-5
Solids, liquids and gases: Mass and volume, Electronic sensors, Proximity detectors, Liquid levels, Liquid flow sensors, Timing, Gases, Viscosity. Environmental Sensors: Environmental quantities, Time, Moisture, Acidity/alkalinity, Wind chill, Radioactive count rate, Surveying and security, Animal fat thickness, Water purity, Air purity, Smoke and fire detectors, Building acoustics.Important Links:
2. Click here to download Complete 5 modules notes(2)
Course Outcomes: At the end of the course the student will be able to:
Use gauges and transducers to measure pressure, direction and distance. Discuss the use of light transducers and other devices used for the measurement of electromagnetic
radiations.
Explain the working of different temperature sensing devices.
Discuss the principles and applications of audio electrical sensors and transducers used for the measurement of sound.
Discuss the use of sensors for the measurement of mass, volume and environmental quantities.
Question paper pattern:
The question paper will have ten full questions carrying equal marks. Each full question will be for 20 marks.
There will be two full questions (with a maximum of four sub- questions) from each module.
Each full question will have sub- question covering all the topics under a module.
The students will have to answer five full questions, selecting one full question from each module.
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