This is Description on Electronic Nose. In this embedded system in biomedical technology is explained.

1. ELECTRONIC NOSE
BITS Pilani
Hyderabad Campus
Mayank Garg
2013H140040H
Embedded System
BITS-Pilani, Hyderabad Campus

2. CONTENTS
HISTORY OF E-NOSE
INTRODUCTION OF E- NOSE
TYPES OF E- NOSE
COMPONENT OF E-NOSE
EXPERIMENTAL SETUP
SENSOR
TYPES OF SENSORS
APPLICATIONS
ADVANTAGES
FUTURE SCOPE
CONCLUSION
Mayank Garg
Slide 2
BITS Pilani, Hyderabad Campus

3. HISTORY OF E-NOSE
 First appeared in a paper by
Persuade and Dodd (1982).
 The E-nose was developed on 19th august 2008.
Mayank Garg
Slide 3
BITS Pilani, Hyderabad Campus

4. ELECTRONIC NOSE
E-NOSE is a device that identifies the specific components
of an odour & analyses its chemical makeup to identify it.
• Details of assignments and project will be announced in the class & on course web
page.
• 5 Assignments – best 4 will be considered for final grading; mix of theoretical
(paper presentation) and practical – with Demo
• Project involves three demos (1) feasibility (2) proof of concept (3) Complete
demo with weightage of 4%, 7% and 9% respectively.
Mayank Garg
Slide 4
BITS Pilani, Hyderabad Campus

5. TYPES OF E-NOSE
S. O. D. system E-NOSE
M.F.S. E-NOSE
Mayank Garg
Slide 5
BITS Pilani, Hyderabad Campus

6. COMPONENTS OF E-NOSE
SAMPLE DELIVERY SYSTEM
DETECTION SYSTEM
COMPUTING SYSTEM
Mayank Garg
Slide 6
BITS Pilani, Hyderabad Campus

7. Mayank Garg
Slide 7
BITS Pilani, Hyderabad Campus

8. EXPERIMENTAL SETUP
Network
Analyzer
Mass Flow
Controller
PC
Switching
Box
Nitrogen
VOC
Sensor
Cell
VOC in
bubbler
Mayank Garg
Slide 8
BITS Pilani, Hyderabad Campus

9. EXPERIMENTAL SETUP
Network Analyzer
Mayank Garg
Slide 9
BITS Pilani, Hyderabad Campus

10. SENSOR
Mayank Garg
Slide 10
BITS Pilani, Hyderabad Campus

11. TYPES OF SENSORS
A sensor is a device which can respond to some properties of
the environment and transform the response into an
electric signal.
Mayank Garg
Slide 11
BITS Pilani, Hyderabad Campus

12. CONDUCTIVITY SENSORS
Exhibit a property of change when exposed to
volatile compounds.
Mayank Garg
Slide 12
BITS Pilani, Hyderabad Campus

13. PIEZO ELECTRIC SENSORS
A piezoelectric sensor is a device that uses the
piezoelectric effect to measure pressure, acceleration,
strain or force by converting them to an electrical signal,
they are configured as mass-change sensing device.
Mayank Garg
Slide 13
BITS Pilani, Hyderabad Campus

14. A) QCM SENSOR:
The QCM sensor consists of a resonating disk a few
millimeters in diameter, with metal electrodes on each
side connected to dead wise. The device resonate at a
characteristic frequency (10MHz to 30MHz) when excited
with an oscillating signal.
Mayank Garg
Slide 14
BITS Pilani, Hyderabad Campus

15. B) SAW Sensor:
• In SAW sensor a Surface
wave travels over the
surface of the device; not
throughout its volume.
• SAW sensors operate at
much higher frequencies,
and so can generate a larger
change in frequency.
Mayank Garg
Slide 15
BITS Pilani, Hyderabad Campus

16. MOSFET SENSORS
MOSFET odour sensing device are based on the principle that VOCs
in contact with a catalytic metal can produce a reaction in the metal
and the reaction’s products can diffuse through the gate of the
MOSFET to change the electrical properties of the device.
Mayank Garg
Slide 16
BITS Pilani, Hyderabad Campus

17. OPTICAL SENSOR
Mayank Garg
Slide 17
BITS Pilani, Hyderabad Campus

18. HUMAN OLFACTORY
SYSTEM
Mayank Garg
Slide 18
BITS Pilani, Hyderabad Campus

19. ARTIFICIAL OLFACTORY
SYSTEM
Computer
Odour
Sensor
Array QCM
Mayank Garg
Odour
Extraction
Pattern
Recognition
Slide 19
Information
BITS Pilani, Hyderabad Campus

20. ANALOGY BETWEEN E-NOSE &
BIOLOGICAL NOSE
Mayank Garg
Slide 20
BITS Pilani, Hyderabad Campus

21. E-NOSE INSTRUMENTATION
Mayank Garg
Slide 21
BITS Pilani, Hyderabad Campus

22. APPLICATIONS OF E-NOSE
Mayank Garg
Slide 22
BITS Pilani, Hyderabad Campus

23. ADVANTAGES
Mayank Garg
Slide 23
BITS Pilani, Hyderabad Campus

24. COST OF E-NOSE
TIME DELAY OF E- NOSE
Mayank Garg
BITS Pilani, Hyderabad Campus

25. Mayank Garg
Slide 25
BITS Pilani, Hyderabad Campus

26. Mayank Garg
Slide 26
BITS Pilani, Hyderabad Campus

27. Mayank Garg
Slide 27
BITS Pilani, Hyderabad Campus

28. Thank You!!
Mayank Garg
Slide 28
BITS Pilani, Hyderabad Campus