- Areas of Research:
- Embedded System Technologies
- Sensor and Sensing Technologies
- E-Nose and E-Vision Technologies
- Sensor Hub and related projects:
Title of Project: Development of Handheld E-Nose
Objective of the Project: The objective of the project is to design and develop a hand-held E-Nose system. The target device will be used primarily for quality testing of finished tea and tea- fermentation process
Brief outline of the project with specific technology fall-outs:
- A low power, portable, low cost, battery operated and small device will be targeted.
- MOS sensors indigenously developed by Sensor Hub, Kolkata will be tried as sensor elements, namely, 1.5% Au-SnO2 ,1% Au-SnO2 ,.5% Au-SnO2,1% Pd-SnO2 ,Fe2O3,1% Ag-SnO2 ,1% Pt-SnO2 ,1% La-SnO2 ,1% Cu-SnO2 ,SnO2. Figaro make imported sensors will also be used in the development namely, TGS-823, TGS-832, TGS-2600, TGS-2610 and TGS-2620.
- A simple, low-power, lightweight mechanical arrangement will be developed for sniffing and purging operation of the sensor assembly. The system may also work with 220V ac.
- Detachable Sensor unit with arrangement of sniffing and purging
- Data acquisition and processing will be done using a suitably chosen micro-controller, preferably, a 16-bit PIC 24FJ256DA210 microcontroller.
- A small graphical touch-screen display will be used for display of results, reports and data entry. The microcontroller is having the inbuilt Graphics Controller.
- Memory card of 2GB or more, FAT 32 file system will be used for data storage and keeping the log of data.
- A PC interface will be developed that will be used to dump these data on to the PC for archival and further analysis.
- The sensor assembly will draw power from a rechargeable, portable battery unit and may also operate through a 220 V ac.
- The handheld unit will operate with rechargeable battery and it also has the option to operate with mains power supply 220V ac.
- Technologies developed:
- Computer-based bench-top Integrated E-Nose and E-Vision system for Tea has been developed
- E-tongue system for tea.
- Computer-based bench-top E-Nose system for Basmati rice has been developed
- Computer-based bench-top E-Vision system for Basmati rice has been developed
- Portable E-Nose (PEN) for Tea has been developed.
- Prototype of Handheld E-Nose (HEN) using imported sensors for Finished Tea has been developed on Hardware developed Boards.
- Facilities with photos:
- Embedded System Laboratory
- Software Development Laboratory
- Electronic Assembly Laboratory
- Biochemical & Optical Laboratory
- Sensor & Instrumentation Laboratory
- 34 Channel, 2 GHz Logic Analyser
- 1 GHz and 100 MHz Mixed Signal Oscilloscopes
- 500 MHz, 4 Channel Storage Oscilloscope
- 40 MHz Handheld Digital Oscilloscope
- 80 MHz Arbitrary Function Generator
- 6 1/2 Digit Bench Top Digital Multimeter
- Infrared Moisture Analyzer
- Deionized and Ultrapure Water Purification system
- Climate Test Chamber for Temperature and Humidity
- Fume Hood
- Ultrasonic Cleaning Bath
- Laser Micrometer
- Photos of unpackaged/packaged products:
- Names and designations of permanent staff involved in the activities:
- Dr. Nabarun Bhattacharyya - Associate Director
- Alokesh Ghosh - Principal Engineer
- Hena Ray - Senior Engineer
- Gautam Sen - Senior Technical Assistant
- Tarun Kanti Ghosh - Project Scientist
- Amritasu Das - Project Engineer
- Suryakant - Project Engineer
- Scholars/Students in Sensor Hub activities:
- Debashis Dutta (Sensor Hub) - Research Associate
Amritasu Das and Hena Ray won the Intel India Embedded Challenge 2011 for the prototype "Portable Electronic Nose (PEN) for Tea" in the "Rural IT, e-Governance and Citizen Services" category and received a cash award of Rs.50,000/=.
- Publications and patents:
- Handheld Electronic Nose (HEN) for applications in Tea Industry
- Alokesh Ghosh, Hena Ray, Tarun Kanti Ghosh, Amritasu Das, Nabarun Bhattacharyya
Published at the 5th International Conference on Sensing Technology, Massey University, New Zealand (ICST2011)
- Portable Electronic Nose for Tea Aroma Detection
- Amritasu Das, Alokesh Ghosh, Tarun Kanti Ghosh, Hena Ray
Published at the International Conference on Emerging Technologies, NIT Durgapur (ICET-2011)