BME100 f2013:W900 Group3 L3

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Lab Write-Up 1 | Lab Write-Up 2 | Lab Write-Up 3
Lab Write-Up 4 | Lab Write-Up 5 | Lab Write-Up 6
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Contents

OUR TEAM

Name: MarissaRole(s)
Name: Marissa
Role(s)
Name: BryceRole(s)
Name: Bryce
Role(s)
Name: BlakeRole(s)
Name: Blake
Role(s)
Name: Shaun WoottenRole(s)
Name: Shaun Wootten
Role(s)

LAB 3A WRITE-UP

Descriptive Statistics

Inside Reading #1:


Oral (Thermometer)

Average Temperature: 97.408 degrees F

Standard Deviation: 0.792832759

Sensor (RAIING Device)

Average Temperature: 93.976 degrees F

Standard Deviation:2.250575902


Outside Reading:


Oral (Thermometer)

Average Temperature: 97.49666667 degrees F

Standard Deviation:0.897227262

Sensor (RAIING Device)

Average Temperature: 95.57944444 degrees F

Standard Deviation: 1.479494751


Inside Reading #2:


Oral (Thermometer)

Average Temperature: 97.742666667 degrees F

Standard Deviation:0.730452162

Sensor (RAIING Device)

Average Temperature: 94.993333333 degrees F

Standard Deviation: 1.730125236




Results

Image:Inside_-1_avg.png

T-Test: 8.22401E-25

Corrected P Value: 0.000667

Image:Inside_-1.png

Pearson's r: 0.160060051 (shown by black linear trend line)

Image:Outside_avg.png

T-test: 2.87443E-39

Corrected P Value: 0.000278

Image:Outside123.png

Pearson's r: 0.225273129 (shown by black linear trend line)

Image:Inside_-2_aVG.png

T-Test: 2.11196E-25

Corrected P Value: 0.000667

Image:Inside_-2.png

Pearson's r: 0.060429623 (shown by black linear trend line)



Analysis

By analyzing our statistics, it is easy to see the flaws in the RAIIN temperature detecting device versus a standard oral thermometer. There were many issues involving the connection of the device to the iPhone app itself, thus making it difficult to get a reading at all. The resulting values from each of the three t-tests were all less that the corrected p-values. This means there is a statistical difference. However, this is not the result wanted; the difference shows that the RAIIN device is flawed in comparison to a proven and functioning device--the oral thermometer. Also, the resulting Pearson's r value was extremely low, which shows a small positive correlation between the oral thermometer readings and the RAIIN sensor. To demonstrate that the sensor works as effectively as the oral thermometer, a Person's r value of 1 is desired. In addition, the standard deviation for the RAIIN device ranged between 1.48 degrees and 2.25 degrees establishing that the device did not provide consistent readings, even when only compared to itself because the desired standard deviation of the experiment would be 0--therefore proving the inefficiency of the RAIIN device compared to the oral thermometer.





Summary/Discussion

It can be concluded that the RAIIN sensor failed to provide accurate body temperature readings when compared to the oral thermometer readings. The readings were consistently lower and more varied than the oral thermometer readings and should be considered invalid. The constant fluctuations, and inaccuracy caused from the device can lead it to be considered not accurate. The lower reading implies that the sensor was not sensitive enough, or the location of the device did not provide sufficiently accurate internal body temperatures. The location of the sensor, just below the armpit, undoubtedly varied slightly between individuals who participated in the study. The investigation should probably have been altered to take a reading using an established device and the RAIIN system from the same location on the body. If there was a correct, proven place that the device would work consistently and accurately, the RAIIN device could have great potential. This would isolate the device as the source of the problem. Some variance was noticed when the arm was elevated from when the arm was allowed to relax against the body. Not having a standard protocol for reading this sensor was undoubtedly an issue with the experimental design itself.

The device also had connectivity issues and had to be isolated from similar devices in order to sync properly, which could be problematic if the device was intended to become ubiquitous. A different method of syncing devices would be preferred in the setting that the RAIIN system was tested in. In addition, when the participant lowered the measured arm, there seemed to be a consistent lack of connectivity and the device had to be activated repeatedly. This could diminish usefulness in many basic applications of the product. Having to press the button and raise your arm in the air for every reading might not always be practical, particularly in healthcare scenarios. This also seems to defeat the underlying convenience appeal that distinguishes this product from more traditional methods of obtaining an internal body temperature.

The most efficient areas to take internal body temperature is the ear lobe, under the tongue, and the rectum, but these places prove to be ineffective during a long period of time. For example, one may need to record body temperature at short intervals while exercising. This leaves the under the arm sensor to be the next effective option for taking internal body temperature, but according to the results the temperatures of the readings were inconsistent with the comparison of the oral thermometer. Another possible area for taking internal body temperature would possibly be the diaphragm because it is stationary mostly unlike the arm. This area also proves useful for taking heart rate data, which could also need to be kept track of when recording body temperature.This modification would fix the complication of the raising of the arm every time data is recorded. Also it is likely that the sensor could have potentially took in account skin temperature that unfortunately does not correlate with body temperature because in order to take body temperature the device would have to take in account the pulse artery temperature of the individual, which again would correlate with your heart rate if graphed theoretically--giving the pule artery temperature, your body temperature.





LAB 3B WRITE-UP

Target Population and Need

Thermo Performance - Start optimizing your workouts!!!!

The audience that we are looking to sell our product to include athletes and other fitness oriented people interested in recording their bodily diagnostics during their workout or exercise. We believe that our product will be extremely useful in improving performance for our audience.The Thermo Performance band sends body temperature, and heart rate readings directly to the sleek, but also casual Thermo Performance Watch. One switch of the watch and on the band, and you will instantly start recording your body temperature and heart rate, which you can then connect your watch with a USB cord to your computer so you can see the fluctuation in your body temperature and heart rate during the workout. This a very necessary product for all athletes and people who enjoy living a healthier life style, it can also be for people with high blood pressure or other medical conditions that can alert the person if they are pushing or possibly going over their specific heart rate or body temperature should be. When they are able to easily access their body temperature and heart rate during a work out, they can pinpoint what exercises to continue doing, and which ones are not helping towards their goals. This device could also be seen as a safety measure for our consumers with health problems. They can exercise with their mind at ease, knowing they can view their heart rate and temperature, and slow their pace if they are presenting any risks to their bodies. Our Thermo Performance Band and Watch is necessary for any individual who enjoys working out and exercising.





Device Design


Image:Watch_design_with_logo.jpg
The watch syncs to the chest band wirelessly and stores work out information until after the work out. Information can be viewed on the the watch screen during the workout, but is really intended to be analyzed post workout on the accompanying software. materials would include a polymer watch casing and a rubber watchband. This allows for optimum durability to weight ratio with minimum cost. Image:BME 100Heart_rate_band.png
The chest band collects biometric information to send to the watch. Temperature, heart rate, and GPS information are all gathered by sensors within the band. It is intended to be worn around mid chest for maximum comfort.

Inferential Statistics

Image:BME 100 Heart_rate_r_during_exercise_data.png
fig 1:The data above displays the heart rate information gathered from 20 participants in a study that involved measuring bio metrics while participating in a cardiovascular exercise for the described amount of time. So, the average 0 min column represents the average of 20 individuals who had not yet started physical activity. Standard error is the standard deviation divided by square root of the number of participants and is an indication of the reliability of the data.

Image:BME100Heart rate during exercise data.png
fig 2: The table above displays the body temperature data collected in the same experiment from fig 1.





Graph

Image:Heart_rate_during_exercise.png
fig 3 : The above chart illustrates the similarity of the data sets between the Thermo Performance band and the current standard of obtaining this measurement. In the case of hear rate, this is heart rate monitor. Therefore, the blue bar is to be understood as the "true" value, and deviation is seen as a failure of the band device. Image:Temp_during_exercise_comparison.png
fig 4 : The cart above follows the same concept as Fig 4, however the measured value here is the body temperature (in °F) . In this trial, the comparison is made between the band and an oral thermometer, though significant deviation from this value still represents a failure of the device.



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