This document discusses an electronics course on sensors. The course objectives are to learn about sensor characterization, the working of different sensor types, and applying sensors in applications. The course outcomes are to understand sensor principles, explore electromechanical, thermal, magnetic, radiation and electroanalytic sensors, understand smart sensors concepts, and design sensor systems. The document defines sensors and transducers, explaining that sensors measure physical quantities and output signals while transducers convert one form of energy to another. It provides examples of sensor and transducer types.

1. ELECTRONIC SENSORS (EC700OE)
B.Tech. EEE IV Year I Semester
Presentation by :
K SRINIVASA RAO M.E (PhD)
Assistant Professor
EEE Dept.

2. Course Objectives
• Learn the characterization of sensors.
• Known the working of Electromechanical, Thermal, Magnetic and
radiation sensors
• Understand the concepts of Electro analytic and smart sensors
• Able to use sensors in different applications

3. Course Outcomes
Upon completing this course, the student will be able to
• Learn about sensor Principle, Classification and Characterization
• Explore the working of Electromechanical, Thermal, Magnetic,
radiation and Electro analytic sensors
• Understand the basic concepts of Smart Sensors
• Design a system with sensors

4. UNIT-1
Sensors / Transducers:
• Principles, Classification, Parameters, Characteristics, Environmental
Parameters (EP), Characterization
Electromechanical Sensors:
• Introduction, Resistive Potentiometer, Strain Gauge, Resistance Strain
Gauge, Semiconductor Strain Gauges –
• Inductive Sensors: Sensitivity and Linearity of the Sensor –Types
• Capacitive Sensors: Electrostatic Transducer, Force/Stress Sensors Using
Quartz Resonators, Ultrasonic Sensors

5. SENSORS and TRANSDUCERS
SENSORS is a device that measures the physical quantity into an
easily readable signal. It gives accurate reading after calibration.
A sensor is a device used to measure the physical changes in the surroundings,
like temperature, light, etc., and convert them into a readable signal.
SENSOR
INPUT SIGNAL
EX: Heat, Light,
Sound etc.,
OUTPUT SIGNAL
EX: Voltage & Current

6. SENSORS and TRANSDUCERS
TRANSDUCER (to convert) is a device that converts/transfer energy
from one system to another in the same or different form. The
process of converting one form of energy to another in know as
transduction.
A transducer is a device that converts a non-electrical signal into an
electrical signal. Transducers are referred to as energy converters.

7. SENSORS and TRANSDUCERS
SENSOR
1. Which converts one physical
quantity into electrical
quantity
2. It senses the physical
quanity.it does not convert to
any form
3. Sensor can respond to a
change in physical parameter
and produce a change in a
physical parameter that can
be sensed
TRANSDUCER
1. Which converts one form of
energy into another form.
2. Transducer= sensor +
transduction.
3. Transducer, which convert a
change in physical parameter
into some useful energy forms

8. SENSORS and TRANSDUCERS
SENSOR
1. Which converts one physical
quantity into electrical
quantity
2. It senses the physical
quanity.it does not convert to
any form
3. Sensor can respond to a
change in physical parameter
and produce a change in a
physical parameter that can
be sensed
TRANSDUCER
1. Which converts one form of
energy into another form.
2. Transducer= sensor +
transduction.
3. Transducer, which convert a
change in physical parameter
into some useful energy forms

9. TYPES OF TRANSDUCERS
Based on application
a) Passive transducer requires external power
b) Active transducer not requires external power