Transcript Sleep Sound3

Sponsored by
Dale Wahlquist
http://sleepsound.editme.com/
[email protected]
Colby Austin, Bart Semmler, Chris Curtis, Lloyd
Daugherty, Jennifer Hasenoehrl and Jeff Otto
Objectives
Current Design
This project focuses on developing an infant monitor to detect stopped
breathing while an infant is sleeping. The product needs to be safe,
reliable and cost effective.
Monitoring system
Prototypes
Prototyping involved using strain gages attached to a mattress, pressure
measurements and weight scales. The final prototype uses a variable
inductance oscillator circuit in a strap. This will be attached to infant sleepwear.
Lloyd Gallup, Mentor
Don Elger, Advisor
Project Details
Spring semester falls
between the stars. Work
during spring semester
includes final prototyping,
designing housing for the
electrical equipment,
incorporating the base
unit and receivers, and
testing.
The budget is shown on
the pie chart.
Variable inductance strap and oscillator circuit
Strain gage
The specifications for the
product are listed in the
table.
Sleep Center Equipment
The sleep center provided information in
measuring human metrics particularly while a
person is sleeping.
Specification
Metric
Initial Estimate
Detects Breath Patterns
+/- breaths per minute accuracy
5
Reliability
False negatives
1 per 100 cases
Liability
False positives per case
1
Compliance with IEC Regulations
Yes/No
Low Voltage
Voltage/Current
< 9V at 2mA
No Sharp Edges
External edge diameter
2 mm
No wires
Yes/No
No Swallow Hazard
Size
Non-toxic Materials
Yes/No
Affordability
Dollars
$300
Simple Operation
# of buttons
5
# of steps in operation
10
Deactivation Button
Size
1 inch
Lights
Per sensor
1
Easy to Assemble
# of Parts
<5
# of Screws
1
Easy to Clean
Method to clean
Washcloth and soap
Waterproof
Time submerged
1 minute
> 2 inch sphere