1/14/2016
Humidity and Oil Mist
Sensor for Life Support
Equipment
Brandon Bonenfant, Dan Sasala,
Warren Hooper, Slawomir Twarowski
Faculty Advisor: Abdul Razaque
Orbital Research Inc.
Company Contact: Tony Opperman
What is Oil Mist?
• Oil particles suspended in the air
• Bi-Product of mechanical systems
• Similar to water mist
• Harmful in large concentrations
• Machinery
• Toxic to people
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Oil Mist in Air Systems
• How is it created?
• Air flowing towards its destination
• Why is it dangerous?
• High concentrations harmful to human
health
Solution…New Sensor! Why?
• Previous designs are large and bulky
• Slow reaction and monitoring time
• Over 60 seconds
• Real time response is needed for safety
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Requirements?
• Sense 0.05 mg/L concentrations of oil mist
• Optical representation from 0-100%
• 100 ms response time
• Built in humidity sensor
• Output to Laptop
• Compact design
Challenges
• Accuracy and consistency of sensors
• Possibility of contaminates
• Speed of response time
• Obtaining test samples
• Testing environment
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Market Potential
• Great market potential
• Compact design
• Low material cost
• Quick response time
• Vital for health and
safety
Markets
• Healthcare
• Military
• Recreational (Extreme Athletics)
• Air Filtration Systems in Buildings
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Proposed Sensor Solution
• Solution A - Sensor reading amount of
light (positive light)
• Solution B - Sensor reading absence of
light (negative light)
• Information analyzed and displayed
Basic Setup
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Basic Flow Diagram
Prototype: Positive Light
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Prototype Two: Negative Light
Variables To Change
• Tube Interior (Matte vs Gloss)
• Tube Size (Volume)
• Number of LEDs and Sensors
• Sensor and LED Placement
• Amplification of Signal
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Budget Plan
Number
Part
Cost
1
APD/Avalanche Photo Diode 905nm
$ 47.00
2
Arduino UNO Rev3
$ 50.00
2
Ambient Light Sensor Breakout - TEMT6000
$ 10.00
2
RGB Light Sensor - ISL29125
$ 16.00
Various
Various Wiring, Op Amps, LEDS
$ 35.00
5
Linear Clear Tubing
$ 5.00
1
Humidity Sensor
$ 15.00
TOTAL
COST
$ 188.00
Progress
• Preliminary Parts Purchased
• Preliminary Amplification Circuit
Breadboarded
• Initial Code Programed
• Iteration One of Circuit Prototype
Completed
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Time Diagram
December
January
February
March
Prototype Circuit
Container Construction
Prototype Solution A & B
Prototype A vs B
Final Prototype Const.
Final Prottype testing
Conclusion
• Compact and accurate oil mist and
humidity sensor
• Could become standard for vital
respiration systems
• Can expand into multiple markets
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Questions?
References for Images
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https://www.businessanalyst.ie/news/view/1572
http://www.naval-technology.com/projects/nssn/
http://nistmep.blogs.govdelivery.com/challenging-times/
http://allstatesrefractory.com/insight-safety-first/
https://en.wikipedia.org/wiki/Time
https://ssl.alpha-prm.jp/gemcorporation.co.jp/productssales.html
• http://www.filtsep.com/view/25935/manufacturingeliminating-oil-mists-in-the-manufacturing-environment/
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• http://rainbowscuba.com/hawaii-scuba-divingequipment.html
• http://hampshirechamber.org/event/hampshire-chamber-ofcommerce-1st-annual-farmers-market-2/
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