BME100 f2015:Group1 8amL3

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BME 100 Fall 2015 Home
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Name: Maria Dooling
Name: Tiffany Nguyen
Name: Brenden Smith
Name: Nathaniel Olsen
Name: Nolverto Guiterrez
Name: Dalia Sarbolandi


Descriptive Statistics


Average: -Gold 97.27 -Spree 98.8

Standard Deviation: -Gold 1.023957 -Spree: 1.222982

Standard Error: -Gold .0527 -Spree .0629

t test: 1.24*10^-64

Heart Rate:

Average: -Gold 95.64 -Spree 96.7

Standard Deviation: -Gold 23.0112 -Spree 23.41883

Standard Error: -Gold 1.2335 -Spree 1.2554

t test: 0.352513



Temperature (F) p value: 1.862139 T test: 1.24*10^-64 The t test p value < .05 so there is a statistically significant difference between the devices. The value of Pearson's R is closer to 0, therefore no correlation between the two. The t test was used because it involved two devices, and compared them.

Heart Rate (BPM) p value: 0.886903 T test: 0.352513 P value > .05 so no significant difference. Pearson's R is closer to 0, no significant correlation. T test used because two devices where compared.


There were various design flaws in the Spree Headband. First of all, the bluetooth disconnected easily. This could be fixed by expanding the distance range. The headband design was not aesthetically pleasing or practical. It left unsightly marks on the subject and can cause heacdaches after extended periods of wear. The design could be improved by changing it into a wristband instead. In addition, the device should include a screen to prevent the need for having to download an application separately. The temperatures collected by the band were significantly different than the gold standard, making it unreliable. Sweat is also commonly produced at the site of temperature collection, and perhaps caused inaccurate values. A better waterproof system would probably help consistency.


Target Population and Need

Target Population:

The target population is active adults who want to monitor their heart rate, body temperature, calories burned, and calories they should intake.


The specific needs of the target population are health monitoring for exercise and health monitoring for intaking food and calories burned during exercise in a comfortable way.

Problem Understanding Form:






-Long battery life

Engineering Requirements:

-State of the art gel pads that have an integrated thermometer, pulse detector, and pedometer. Also a good app that connects to your cellular device/laptop to calculate a calorie count.

-Soft gel pads that have a strong but smooth adhesive that easily stick on and come off, without shifting during exercise.

-Main device is a small Bluetooth device that connects to your phone/laptop, and can be made to sell at a reasonable price. The gel pads that are used to connect the device and the person will be durable and strong, and easily replaceable if needed for a cheap price.

-The gel adhesive will stick to the person without discomfort and shifting, and the device will be small enough so that it does not bother the user while exercising. Will be a Bluetooth device so no wires needed.

-Pulse Patch will use hearing aid batteries as a power source, which are both powerful, long lasting, and affordable.

Device Design

These are the parts that would need to be built into the device

-Soft, state of the art gel pads that would have a strong but smooth adhesive that would stay in place during exercising, but could easily be removed.

-An integrated thermometer to observe and record the wearer's body temperature

-An integrated pulse detector that would detect and observe the wearer's pulse during use

-An integrated pedometer that would allow the device to count and record the wearer's steps during use

-Bluetooth device that would be capable of connecting to the wearer's laptop or phone to allow them to view their progress

Device Logo:

Device Design:

Inferential Statistics