revisimo remote vital sign monitor tm. about us dr. thomas morris advisor cory zywno ee coordinator...
TRANSCRIPT
![Page 1: Revisimo Remote Vital Sign Monitor TM. About us Dr. Thomas Morris Advisor Cory Zywno EE Coordinator Thermo- Dynamics Calibration Matthew Galloway EE Temperature](https://reader036.vdocuments.mx/reader036/viewer/2022062519/5697bfd11a28abf838cab18c/html5/thumbnails/1.jpg)
Revisimo
Remote Vital Sign Monitor
TM
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About us
Dr. Thomas Morris
Advisor
Cory Zywno
EE
•Coordinator•Thermo- Dynamics•Calibration
MatthewGalloway
EE
•Temperature Conversion•Thermo- Dynamics •Calibration
MatthewGallups
EE
•Alarm•Battery Life•SPI Interface
AaronCheeseman
EE
•User Interface•PCB design•Battery Life
PaulJang
CPE
•RFD•SPI Interface•User Interface
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Overview
• Problem/Solution• Constraints
– Technical– Practical
• Testing– Hardware– Software– System
• Future Goals• Questions
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Problem
• Market (oral, tympanic, scanning)– Inaccurate & No Programmable Alarm– Difficulty of Continuously Monitoring
• Hospital equipment– Expensive– Mobility is Restricted– Hard to use
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Solution• What is Revisimo?
– Digital wireless Thermometer
• Bandage• Wireless• Temperature
Sensing Device• Monitor
• Alarm• Temperature set
by the user
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System Overview
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Constraints
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Technical Constraints
Battery Life Revisimo must have a minimum battery life of seven days.
Wireless The bandage and monitor must communicate with
each other within a 100-foot radius (indoors). Alarm System The alarm must be triggered if a user defined
temperature is reached. Also, the alarm must be audible from at least 30 feet away.
Temperature Precision
Revisimo must calculate the core body temperature within 0.5 °F. Revisimo must read temperatures within the range of 65 °F to 110 °F.
Visual Distance The display must present data to the user at a distance of up to 3 feet.
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Manufacturability
• The bandage must fit on the temple and the monitor must be handheld.
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Political
• Revisimo must abide by Federal Communications Commission regulations and allocations of the radio spectrum (9kHz to 3THz).
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Battery Life
• Current Draw (Low Power Mode): 5.1 mA
• Current Draw (Active Mode): 35.6 mA
• 4ms transfer time
• mA-h= 855.01+.27= 855.28 mA-h
• A coin cell battery of 900 mA-h to 1000 mA-h will be sufficient.
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Hardware Testing
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Operating Range
Description Displacement Pass/Fail
Case 1 Same Floor (Line of Site) 163 Feet Pass
Case 2Same Floor, 1 Hall (Non Line of Site) 152 Feet Pass
Case 3Same Floor, 2 Halls (Non Line of Site) 59 Feet Pass
Case 4 1 Floor up (Non Line of Site) 164 Feet Pass
Case 5 1 Floor up, 1 Hall (Non Line of Site) 115 Feet Fail
Case 6 2 Floors Down (Non Line of Site) 44 Feet Pass
Case 7 3 Floors Down (Non Line of Site) 31 Feet Fail
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Alarm Audibility
• The alarm was tested for audibility from thirty feet away.
• The alarm operates at 245 Hz and approximately 3Vpp
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Display Readability
• The monitor was setup three feet away from the user.
• The test concluded that the LCD could lucidly be seen from three feet away.
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Software Testing
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User Interface (UI)
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Display
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Display
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Display
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Temperature Calibration
Measured Voltage (V) Calculated Temp (F) IR Temp (F) Thermocouple Temp (F) Calculated/IR Average Constant
0.654 95.07 96.2 96 1.0118 1.0288
0.64 96.18 99.6 98 1.0355
0.605 99.31 102.3 102 1.0301
0.586 100.67 104.5 104 1.0380
Measured Voltage (V) Calculated Temp (F) IR Temp (F) Thermocouple Temp (F) Calculated/IR Average Constant
0.679 93.13 96 96 1.0308 1.0415
0.64 96.18 100.4 99 1.0438
0.623 97.56 101.8 102 1.0434
0.602 99.31 104.1 104 1.0482
Thermistor 1 Calibration
Thermistor 2 Calibration
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sbss
bc TTTh
hT
Digital Thermometer (F) Skin Thermistor 1 (F) Skin Thermistor 2 (F) Buried Thermistor 1 (F) Calculated Core Body Temperature (F)
98.9 95.57 97.96 91.38 102.15
95.28 97.98 91.09 102.17
95.45 97.96 90.95 102.46
95.5 97.86 90.93 102.43
1399.s
b
h
h
Temperature Calibration
Thermal Conductivity of Bandage and Skin
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Temperature Calibration
Digital Thermometer (F)
Calculated Core Body Temperature (F)
Temperature Difference (F)
98.4 96.1 2.3
97.4 1.0
96.2 2.2
96.0 2.4
95.8 2.6
IR Thermometer (F) Surface Temperature 1 (F) Surface Temperature 2 (F) Difference (F)
105.0 102.8 104.3 .7
102.5 103.9 1.1
102.8 103.9 1.1
102.9 103.9 1.1
Hot Plate Results
Temple Region Results
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System Testing
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System Tests
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Sunny Day Case
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Rainy Day Case
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Future Plans
• Increase Temperature Accuracy• Control Layer PCB
– Antenna– Battery– Microcontroller
• Monitor PCB– Antenna– Battery– User Interface– Microcontroller
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Questions
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Reference
• [1]http://www.accesshealth.com.au/sample/107/122/Meas_Therm_Reister_Tympanic_250_x_489_1024.jpg
• [2]http://ec2.images-amazon.com/images/P/B00004C8SV.01._SS400_SCLZZZZZZZ_V1057215662_.jpg
• [3]http://ecx.images-amazon.com/images/I/312EW9VHJNL._SL500_AA280_.jpg
• [4]http://www.tmhfoundation.com/images/fundraisingobjectives_pic3.jpg
• [5]http://en.wikipedia.org/wiki/File:US-FCC-Seal.svg