13. Applications and implications¶
This week, I considered the applications and implications of the skills that I’ve learned so far in the Fab Academy Class. Specifically, I aimed to clearly develop the concept for my final project.
Assignment: Propose a final project masterpiece that integrates the range of units covered, answering:¶
What will it do?¶
The purpose of my project is to create a CPR dummy that accurately simulates Cardio-pulmonary Resuscitation techniques.
Who’s done what beforehand?¶
As of 2019, there are many types of CPR dummies for sale. Here are a few versions from the most notable brands with their price points as of 2019. The dummies marked with an ‘*’ are digitalized.
Laerdal ~ $2,953.00
Nasco* ~ $175.00
Prestan* ~ $143.14
Simulaids* ~ $160.60
Feedback Products* ~ $175.00
Gaumard ~ $995.00
While these manikins matched my desired product, I did not want to spend $100+ dollars on the comercially available dummies.
Here are a few DIY tutorials that I found online.
I did not find a tutorial that truly matched my desired goals, but I thought the last two articles provided some relevant information!
What will you design?¶
I want to design a digitalized compression system that feels similar to the real life environment, while simultaneously providing beneficial feedback to the user.
Part: 3D Printed Check Valve
Purpose: Simulate the 2 rescue breaths.
Part: Silicon Chest Mold
Purpose: Encase the flex sensors, mimic resistence involved with compressions
Part: Flex Sensor Board
Purpose: Calculate the compression depth/rate
What materials and components will be used? Where will come from? How much will they cost?¶
|1||Mold Star 30||32.22$||https://www.reynoldsam.com/product/mold-star/|
|1||3/4” Acrylic Ball||1.70$||https://www.outwater.com/products/12012/|
Any additonal materials are already found in the CLS Fab Lab.
What parts and systems will be made?¶
I will make all the parts and systems listed above.
What processes will be used?¶
I will Fusion 360 to design my check valve and mold.
To print the check valve, I will use the LulzBot printers and Cura software.
To create the mold, I will use the ShopBot. I will then cast the silicon chest piece by following the molding and casting processes outlined in Week 10.
Using Eagle, I will design my electronics. I will mill my boards using the OtherMill machines and Bantam software.
What questions need to be answered?¶
I need to figure out a way to connect the flex sensors on either side of the chest. I will work on this in Week 14: Networking and communications.
I need to figure out a way to share the calculated data with the user. Hopefully, I can develop an application in Week 16: Interface and application programming.
What tasks need to be completed?¶
Over the next few weeks, I need to…
Redesign my Check Valve. I hope to design a better inner ball and seal. I will do this by purchasing a ball and rubber o-ring to install in my valve. I do not think that the 3D printers at Charlotte Latin can achieve the precision for the seal that I desire.
Cast Flex Sensors and Check Valve into Baby Mold. I need to figure out a way to cast the components of my project into my silicon baby doll model for my final product. I need to minimize the dampening of my sensors while also hiding the ‘ugly’ electronics and wiring.
Create a visual representation of the data that my circuit is receiving. I want to possibly develop an application during week 16 that interfaces with my circuit to display the pressure amount.
What is the schedule?¶
Here is a gantt chart outlining the schedule for my final product. I noted some steps that I have already taken towards the completion of my project.
How will it be evaluated?¶
I will evaluate my project with this article which explains the three main parts of CPR (CAB):
C ompressions: CPR begins with 30 chest compressions
A irway: After 30 compressions have been completed, the victim’s airway must be open for breathing to be restored
B reathing: Once the airway is opened, two rescue breaths must be given
I would like to simulate as much of this list as I can in the given time limit.
Additionally, I want to develop an aesthetically pleasing final product. I hope to do this by casting a majority of my circuitry in my silicon chest piece.