User:NehaaNan9/Project3

Project Preference

 * Biovest
 * Wind turbine
 * Mobile Hallway Navigation

Problem Statement
We are trying to produce a design that has all three features (a temperature, heart rate, respiratory rate sensors)and is comfortable for the patient. Since the previous group had completed the Conceive phase in this project cycle we will move onto the Design phase.

Project Plan

 * 1) Week 1: Research the designated sensors
 * 2) Week 2: Find which type of materials should be used
 * 3) Week 3: Assemble the whole design together to make a final product
 * 4) Week 4: Test to refine the final design

Week 1 Narrative
On Tuesday we decided to split up the work, since the Bio Vest project requires three types of sensors (temperature, respiratory rate, pulse rate). I did some research on the finding how the temperature sensor works.
 * A temperature sensor is a chip that tells the patient what the ambient temperature is. Bimetallic Strips are home thermistors (temperature sensitive resistors)
 * Some of the basic statics for the temperature sensor are:
 * Size: To-92 package (about 0.2" x 0.2" x 0.2") with three leads. The left led is connected to power with 2.7-5.5V, the second led is the analog Voltage out, at the third one is connected to ground.


 * Temperature range: -40°C to 150°C (-40°F to 302°F)
 * Output range: 0.1V(-40°C)to 2.0V(150°C) Noting that the accuracy decreases after 125°C
 * Power supply: 2.7V to 5.5V only, the current draw is around 0.05mA.
 * There was an specific formula that converted the amount of volts entered the sensors to the appropriate temperature in Celsius. °C=[(Vout in mV)-500]/10 the formula was only used for the TMP36.

But to find the general conversion the graph of Output Voltage(V) vs. Temperature(°C)was to be used.
 * I also researched the E-health platform (the device that contains inputs for the sensors), the e-health Sensor Shield V2.0 allows Arduino and Raspberry Pi users to perform biometric and medical applications including 10 different sensors:
 * pulse
 * Oxygen in Blood (SPO2)
 * Airflow (breathing)
 * Body temperature
 * Electrocardiogram (ECG)
 * Glucometer
 * Galvanic Skin Response (GSR-Sweating)
 * Blood pressure (Sphygmomanometer)
 * Patient position (Accelometer)
 * Muscle/Electromyography sensor (EMG)
 * We were searching for a e-health platform that is sold in the United States, but we unfortunately didn't find the product. But me and Alex found a website that uses these platforms for a class and we decided to call them and buy/borrow the platform.

Week 2 Narrative
This week I had to come up with a design that can be incorporated within the vest. After some research, the best place to find one's body temperature is either in the mouth, rectum, or the armpit. Since the vest can be approachable to the armpit area, I decided that it was best to incorporate the temperature sensor in the armpit area, so the Arduino can have a better reading of the temperature.

Alex and I were researching different materials that bio vest could be made of. Listed on this page --> http://www.mvstylenaturals.com/natural-fabric.php under the Natural column, are certain types of materials that are ranked for certain characteristics. Our initial requirements for each material were And through the website http://www.ehow.com/about_5087331_properties-polyester-fabrics.html we found that Polyester with Cotton was the best match because they were: Some of the possible problems that can occur by using Polyester is that it can produce static with other materials, it has the ability to develop small fuzz balls, even though it's hard to stain the material it is that difficult to remove it.
 * Lightweight
 * Comfortable to touch
 * Unshrinkable
 * Waterproof
 * Easy to wear
 * Thermal capacity (able to produce heat)
 * Washable
 * Inexpensive
 * Strong
 * Light weight
 * Dry to touch
 * High melting point
 * Stain resistant
 * Cannot stretch nor shrink
 * Wrinkle resistant
 * Retains heat
 * Easy to launder

Week 3 Narrative
This week I had created a design matrix that shows what type of material and clothing would be able to get the accurate readings of the body temperature. The results would be based off of certain conditions but mainly focus on the temperature sensors. Each clothing would be rated from 0 to 1, 0 for not meeting the requirements, 1 for meeting the requirements, 0.5 for being in the middle and N/A if the requirement does not apply to the coordinating clothing. After I created the matrix the vest seem to be the winner only for the temperature sensor.

The clothing that we had picked and the following reasons were:
 * Vest - we are able to wear it inside or outside of a shirts
 * Full sleeve shirt - can also cover the wrist for better pulse rate
 * Waist band and watch - to receive the reading for the vital parts of the body
 * Under armor shirts - has a tight fitting around the body for better measurements
 * I also had wanted to incorporate a display that will be stitched on the vest so the body temperature will be easier to be found.



Week 4 Narrative
We basically had two choices we had wanted to pick, one was for the elderly and the other was for the youth. When we completed our individual design matrices Alex's choice was to go with a Polyester T-Shirt because it's comfortable which mainly focuses on the elderly. but the problem was the sensors might not produce the accurate results. My design matrix led to the Under Armour shirt because it sticks close to the body therefore producing better results. The Under Armour shirts mainly appeals the youth consumers, which is increasing these days. Our dilemma resulted in a new solution, we realized in order to appeal both targets we could combine both ideas to form a unique design. The final design consisted of a cotton full sleeve shirt and it has patches of leather at the vital areas for the readings of pulse, respiratory, and temperature.

This week I also worked on the requirements section of the CDIO report. Link to CDIO report here: https://en.wikiversity.org/wiki/User:Medelen8/ENES100/BioVest_Design.