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19ELC201 Sensors and Sensor Circuit Design
Introduction to the Course
3rd Semester B.Tech. ELC
2021 - 2022
Source: https://www.semanticscholar.org/paper/A-cyber-physical-system-approach-to-smart-city-Ghaemi/758bec4725322d905e772cec39a1652063368514
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Course Objective
To provide understanding of operating principles of different sensors and
design of sensor circuits
▪ Electrical, Thermal and Mechanical sensors
▪ Design of sensor circuits
▪ Analog and digital signal conditioning techniques
What you will learn?
SyllabusUnit 1
Electrical Sensors: Hall effect sensor, CT, PT. Thermal Sensors: Thermistors, Mechanical
Sensors: Displacement- LVDT, Pressure sensors, Flow sensors. Semiconductor Resistance
versus Temperature, Thermocouples. Design of temperature indicator using IC sensors, Errors
due to resistance drift, effects of Op amp offset voltage drift, offset current drift. Error
budgeting. Practical design of 4-20 mA current transmitter for resistance sensors and LVDT
sensor.
Unit 2 Instrumentation amplifier. Practical designing of a capacitor measurement circuit. Ratio
transformer technique. Differential capacitor measurement. Errors in the capacitance
measurement. Phase sensitive detection and use of the same for lock-in amplifier design.
Unit 3
Analog and Digital Signal Conditioning - Principles of analog signal conditioning, Signal-Level
and Bias Changes, Linearization, Conversions, Filtering and Impedance Matching Concept of
Loading. Sensor-to-Frequency Conversion Data-Acquisition Systems: Hardware and Software
of Data Acquisition System (DAS) Characteristics of digital data: Digitized Value, Sampled Data
Systems, Linearization.
Textbook:
1. Robert B. Northrop, “Introduction to Instrumentation and Measurement”, 3rd Edition,
CRC – Press – Taylor and Francis Group.
References
1. Paul Horowitz and Winfield Hill, “The Art of Electronics”, 2nd Edition, Cambridge
University Press, 1992.
2. Curtis D. Johnson, “Process Control Instrumentation Technology”, 6th Edition, Prentice
Hall International Edition.
3. John G. Webster, “Measurement, Instrumentation, and Sensors Handbook”, CRC Press,
Taylor and Francis Group.
4. Circuits for Analog System Design (NPTEL) - Prof. M.K. Gunasekaran, IISc, Bangalore.
Course Objective
To provide understanding of operating principles of different sensors and design of sensor
circuits
Course Outcome
Course Outcome
CO1: Knowledge on operating principles of different types of sensors.
CO3: Learning of analog and digital signal conditioning techniques
CO4: Ability to implement sensor circuits
CO2: Ability to design sensor circuits.
CO1: Understanding of operating principles of different types of sensors (BTL–2)
CO2: Ability to design sensor circuits (BTL – 3)
CO3: Ability to apply analog and digital signal conditioning techniques (BTL – 3)
CO4: Ability to demonstrate sensor interface circuits through hardware and
simulation. (BTL – 4)
Evaluation Pattern
Component Assessment % Weightage
Internal
Mid term exam 20%
Quiz 15%
Lab 30%
External
End Semester
35%Viva-Voce
Total marks 100