ECE5320 Mechatronics Assignment#01: Literature Survey on Sensors and Actuators Topic: Electronic Nose SensorOutlineReference listTo explore further (survival pointers of web references etc)Major applicationsMajor Applications Cont.Slide 7On space shuttle or space station (Ref 1)In Food Science (Ref 3 and 5)Food Science ExamplesFood Science Examples cont.Detection/diagnosis of certain diseasesBasic working principle (Ref 1: hownoseworks.ppt)Basic working principle continued (Ref 1)Slide 15Basic working principleTypical sample configurationMajor SpecificationsLimitationsHow to get oneECE5320 MechatronicsAssignment#01: Literature Survey on Sensors and Actuators Assignment#01: Literature Survey on Sensors and Actuators Topic: Electronic Nose SensorPrepared by:Kaleb NelsonDept. of Electrical and Computer Engineering Utah State UniversityE: [email protected] ; T: (435)760-7749; F: (435)797-3054 (ECE Dept.)3/6/200901/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-2Outline –Reference list–To probe further–Major applications–Basic working principle illustrated–A typical sample configuration in application–Major specifications–Limitations–And many more relevant issues in applications (such as, how to choose, cost information, where to buy etc.)01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-3Reference list•http://science.nasa.gov/headlines/ y2004/06oct_enose.htm (1)•http://enose.jpl.nasa.gov/ (2)•http://www.iit.edu/~jrsteach/enose.html (3)•http://www.physorg.com/news112269287.html(4)•http://en.wikipedia.org/wiki/Electronic_nose (5)01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-4To explore further (survival pointers of web references etc) •http://cns-web.bu.edu/pub/laliden/WWW/Papers/nose.html•http://en.wikipedia.org/wiki/Electronic_nose01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-5Major applications •On space shuttle and space station•In food science•Detection/diagnosis of certain diseases•Chemical spill analysis/identificationMajor Applications Cont.•Wastewater analysis•Cosmetic & perfume industry•Flavor and fragance industry•Anywhere when repeated exposure can be harmful to human olfactory panel01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-6Major Applications Cont.•Searching for Toxic Industrial Chemicals (TICs) and Chemical Warfare Agents (CWAs)•Searching for mold and mildew•Monitoring risky working conditions01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-7On space shuttle or space station (Ref 1)•There are many compounds that need to be taken on space shuttle (i.e. ammonia)•Many of the chemicals “cannot be allowed to accumulate in a closed environment”•It is necessary to have something more sensitive that the human nose at detecting compounds in the air.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-8In Food Science (Ref 3 and 5)•As with many industries, quality control is essential when dealing with foods•The E-Nose can help detect bacterial growth on foods such as meat and vegetables•The E-Nose can assist in batch to batch consistency; detection of spoilage, contamination, adulteration.•It can also simply monitor storage conditions01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-9Food Science Examples–Quality classification of stored grains–ID of source and quality of coffee–Monitoring of coffee roasting process01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-10Food Science Examples cont.–Rancidity measurements of olive oil (due to accumulation of short-term aldehydes)–Freshness of fish–Process control of cheese, sausage, beer, and bread01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-11Detection/diagnosis of certain diseases•Reference 3•Able to use noninvasive specimens (sputum, breath)•Examples:–Detection and diagnosis of pulmonary infections (e.g., TB or pneumonia)–Diagnosis of ulcers by breath tests01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-12Basic working principle (Ref 1: hownoseworks.ppt)01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-13All of the polymer films on a set of electrodes (sensors) start out at a measured resistance, their baseline resistance. If there has been no change in the composition of the air, the films stay at the baseline resistance and the percent change is zeroe-e-e-e-e-e- BASELINE RESISTANCEBasic working principle continued (Ref 1)01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-14 Each polymer changes its size, and therefore its resistance, by a different amount, making a pattern of the change THE ELECTRONIC NOSE SMELLS SOMETHINGe-e-e-e-e-e-01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-15Basic working principle continued (Ref 1) If a different compound had caused the air to change, the pattern of the polymer films' change would have been different:e-e-e-e-e-e-Basic working principle•Moxide semiconductors (MOS), quartz crystal microbalance, surface acoustic wave (SAW), and field effect transistors (MOSFET) can also be used instead of just the polymer films mentioned.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-16Typical sample configuration•Any possible application with a commercially available electronic nose would simply be the commercially available product. Nothing else is needed.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-17Major Specifications•Supply power•Size (hand-held or larger)•Data acquisition and storage methods–Wireless transmission or wired download•Response time•Detection accuracy•Detectable substances01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-18Limitations•The E-Nose can only sense what it has been calibrated for.01/14/19ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuatorsSlide-19How to get one•Most of the information about electronic noses were from government applications (especially NASA) and university research.•There are some commercially available E-noses
View Full Document
Unlocking...