OMR353 Sensors

                     


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     S.Santhosh (Admin) 
Important questions 
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OAN551 Sensors and Transducers 

 Unit 1

1. Static and Dynamic characteristics**
2. Classification of sensors 
3. Calibration technique, Output signal types
           4.PWM, PPM***
Unit 2 
1.LVDT, Potentiometer
2. LIDAR, RF beacons
RAre
3. Encoders-inductive and capacitive
Unit 3
1. Magnetic sensors types (all in this topic)
2.HAll effect **
3. Gyroscope , inclinometer
Unit 4
1.Photo voltaic, LDR 
2. PIezo electric, SMart sensors ** 
3.MEMS&nano sensors**
Unit 5 
1. Resistive, Inductive and Capacitive Bridges for Measurement*&* may be part C
      2.DC and AC Signal Conditioning Voltage, Current, Power and Instrumentation Amplifiers **
             3. Fundamentals of Data Acquisition System
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**Very important questions are bolded and may be asked based on this topic

PART-C

1.Compulsory Questions {a case study where the student will have to read and analyse the subject }
mostly asked from unit 2, 5(OR) a situation given and you have to answer on your own

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UNIT I SENSOR CLASSIFICATION, CHARACTERISTICS AND SIGNAL TYPES

Basics of Measurement Classification of Errors Error Analysis. Static and Dynamic Characteristics of Transducers Performance Measures of Sensors Classification of Sensors - Sensor Calibration Techniques Sensor Outputs Signal Types Analog and Digital Signals, PWM and PPM.

UNIT II DISPLACEMENT, PROXIMITY AND RANGING SENSORS

Displacement Sensors Brush Encoders Potentiometers, Resolver, Encoders Optical, Magnetic, Inductive, Capacitive, LVDT RVDT-Synchro Microsyn, Accelerometer - Range Sensors Ultrasonic Ranging Reflective Beacons Laser Range Sensor (LIDAR) - GPS - RF Beacons.

UNIT III FORCE, MAGNETIC AND HEADING SENSORS

Strain Gage Types, Working, Advantage, Limitation, and Applications: Load Measurement Force and Torque Measurement Magnetic Sensors Types, Principle, Advantage, Limitation, and Applications Magneto Resistive Hall Effect, Eddy Current Sensor Heading Sensors Compass, Gyroscope and Inclinometers.

UNIT IV OPTICAL, PRESSURE, TEMPERATURE AND OTHER SENSORS

Photo Conductive Cell, Photo Voltaic, Photo Resistive, LDR Fiber Optic Sensors Diaphragm Bellows Piezoelectric Piezo-resistive Acoustic, Temperature IC, Thermistor, RTD, Thermocouple Non Contact Sensor - Chemical Sensors - MEMS Sensors - Smart Sensors.

UNIT V SIGNAL CONDITIONING
Need for Signal Conditioning - Resistive, Inductive and Capacitive Bridges for Measurement - DC and AC Signal Conditioning Voltage, Current, Power and Instrumentation Amplifiers - Filter and Isolation Circuits - Fundamentals of Data Acquisition System

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