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Sensors And Transducers

Semester :  VI

Course Code : 18EE647

CIE Marks : 40                       SEE Marks : 60

Sensors And Transducers



Strain and Pressure: Mechanical strain, Interferometry, Fibre optic methods, pressure gauges, low gas
pressures, Ionization gauges, Transducer use.
Position, direction, distance, and motion: Position, Direction, Distance measurement, Distance traveled, Accelerometer systems, Rotation.


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.


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.


Sound, infrasound and ultrasound: Principles, Audio electrical sensors and transducers, Electrical to audio transducers.


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.