Lab 3A: “Device Validation”
You have just graduated with your BME degree and have been hired by a start up company called “Suntronic”. They are developing a new body temperature and heart rate monitor for smart phones and want to check out the competition. The latest such device is from Spree Sports (www.spreesports.com) and they claim the device can accurately measure body temperature and heart rate. Your assignment is to assess how valid the device is as well as to identify any design flaws by comparing the temperature and heart rate readings on the device to those of an oral thermometer and pulse oximeter.
1. Take five temperature and heart rate readings in the lab (one every two minutes) using the Spree sensor, the oral thermometer and the pulse oximeter all at the same time.
2. Walk around campus and take one reading every five minutes for an hour using the sensor, the oral thermometer and the pulse oximeter all at the same time. You can try and increase your heart rate by walking faster or even jogging.
3. Return to the lab and take 5 temperature readings, one every two minutes using the sensor, the oral thermometer and the pulse ox all at the same time.
4. Enter your results into the Google spread sheet on Blackboard and your own Excel Sheet (to avoid losing data if problems with Google Doc) under your group number.
5. Calculate the mean and standard deviation for both sensor, oral thermometer and pulse oximeter using the entire class data (both sections).
6. Calculate the correlation coefficient (Pearson’s r) between 1) the oral thermometer and Spree Band and 2) the pulse oximeter and the Spree Band.
7. Run statistical analysis to compare the 1) oral thermometer and Spree Band and 2) the pulse oximeter and the Spree Band.
8. Graph all your results and include stars showing significance (if appropriate).
9. Write a summary of your results including any conclusions you have made from your analysis and summarize any design flaws you have noted during test.
10. Make recommendations as to how you would improve the device.
Spree Monitor App installed on an iPhone.
Pulse ox (or wrist band to measure heart rate)
Note: The head band does not actually provide an exact measure of body temperature. It shows temperature on a graded “color scale”. There are four levels. Record each level as a score of 1-4.
Note: Make sure the iPhone is always within a few feet of the sensor.
HW: Lab Report 3 due 9/30/14 at 11:59PM (through OpenWetWare)
5 points – Descriptive Statistics
15 points – Graphing with labels and error bars
20 points – Inferential Statistics
10 points - Summary including design flaws and recommendations
50 points – Peer Evaluation
SPREE HEAD BAND INSTRUCTIONS
GETTING STARTED WITH SPREE
1. PREPARE FOR FIRST USE:
a. Download the Spree App from the App Store. It is free.
2. PLACE SPREE ON YOUR HEAD:
a. Make sure that the POD inserted into your head band touching your forehead. Adjust size of band as needed.
3. OPEN SPREE APP:
a. When you open the app for the first time, you will need to put in your information.
b. To adjust information, locate small gray button above “Activity” in the upper left corner of the app screen. Select “Settings.” Once done, click the gray box in the upper left corner and select “Workout”.
4. CONNECT TO SPREE:
a. Make sure your Bluetooth is on and move away from other groups.
b. From the Workout screen, tap the “DEVICE” button in the lower right. You should see your Spree unit in the list. Choose the Spree and tap the “Save” button.
c. If you do not see your Spree and the Bluetooth is on, gently shake the device to turn it on.
5. SELECT YOUR “ACTIVITY” AND YOUR “MARK”:
a. Tap the “ACTIVITY” button from the workout screen. Choose the appropriate workout.
b. Tap the “MARK” button and select workout intensity. Any selection is fine.
6. BEGIN WORKOUT.
a. Tap “BEGIN WORKOUT”.
b. Make sure your Bluetooth icon on your phone flashes and stays lit. If not, try reconnecting to the Spree again (above).
c. The status bar at the top center of your phone screen has 3 icons:
i. Quality of Heart Rate Signal: Make sure that the heart icon is outlined in red and at least 1/3 full before starting workout. Re-position if not and wait 3-5sec.
ii. Connection of Spree to Bluetooth: Make sure the Bluetooth icon is lit blue. If not, wake up the Spree by gently shaking it.
iii. Battery Status of Spree: Make sure that the battery is at least halfway charged.
7. DURING WORKOUT:
a. Two arcs will provide “heart rate” and “temperature” information. Collect both pieces of information from Spree and gold standard as described on lab description.
i. HEART RATE: At any time, you can swipe to the left on your phone to get your heart rate.
ii. TEMPERATURE: Use the annotated arc and estimate the current temperature.
8. ENDING WORKOUT:
a. Press “PAUSE WORKOUT” and the “FINISHED”.
b. Under “HISTORY” on your phone, you can see a summary of the workout.
9. CLEAN SPREE:
a. Clean with baby wipe not alcohol swab. (Please only use 1.)
b. You may use an alcohol swap on the band itself but do NOT use on the Spree device.
c. Return headband and Spree when done.
Lab 3B: “Device Development and Marketing”
You have assessed the competition’s device (the Spree Headband) and have decided to move forward on designing your own body monitoring device. Based on the obvious flaws in your competition’s devices, design an improved body monitoring device. There are two components to this lab. The first is the written component in which you present your design, “data”, and analysis. The second is the commercial that will be shown in class where you market your device to a target population.
1. Identify a target population and need in that population for your body monitoring device.
2. Draw a diagram of your device using any graphics program you like.
3. Create a fictitious data set (in Excel) showing what you did to test the device.
4. Analyze your data using the appropriate statistics and graph the results.
5. Create a Logo and slogan for your device.
6. Create a 30 second TV commercial in which you market your device to your target audience presenting your compelling data and ingenious design. Use any movie making software you like.
HW: Lab Report 3B (through OpenWetWare) and Commercial through Blackboard due 10/14/14 11:59PM. Bring Memory Stick with Commercial to the Presentation as well.
Grading Scheme: Written report
5% - Target Population and Need
5% - Diagram of the device
5% - Data set and statistics
5% - Graph
20% - Peer Evaluation
Grading Scheme: Commercial (Grading by Peers and Instructors)
10% - Branding (Logo and slogan)
10% - Positioning (identifying and attempting to occupy a market niche)
10% - Target market
10% - Messaging
10% - Placement (price, promotion, distribution, packaging, and competition)
10% - Overall Impression
Score scaled to 20points
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