WEEK 2: Patient Monitoring 🩺

This week we designed and built a circuit that triggers outputs based upon combinations of sensor inputs. This circuit is supposed to flash different colored LEDs based on how many symptoms are set off. This week our team also learned about the function of semiconductors, logic gates, and electronic parts.

Biomedical Engineering and Electrical Engineering

Bioenginnering (or Biomedical Engineering) makes advances in engineering, medicine, and biology by integrating engineering sciences with biomedical sciences and clinical practice. Using their expertise with medical needs, bioengineers are enhancing health care by designing new devices, developing new procedures, and carrying out research to find the knowledge to solve new problems. Some major advancements in bioengineering include MRI, arthroscopy, bioengineered skin, and kidney dialysis. Electrical engineering focuses on the development of electronic systems and manufacturing electrical equipment and devices. These engineers are responsible for desiging, developing, testing, and supervising manufactured electronic equipment. Examples of this equipment are electric motors, automobiles, navigation systems, and wiring in buildings.

Design Process

Part 1: First Day Activities

For the first day of Week 2, our team started by learning about Electrical Engineering and Biomedical Engineering in a lecture. Following this we got a run down on the basics of circuits and how to create series and parallel circuits. Through a couple activites using basic materials, we were able to practice building both series and parallel circuits that lit up LEDs. After, we got a short lecture on Semiconductors to set us up for the Semiconductor Lab. In the afternoon, Dr. Gray gave a lecture on Digital Logic and Boolean Algebra while Mr. Irvine explained the Flip-Flop logic. Both of these lectures gave us the necessary information to start our projects for this week. Here are some photos from our day!

Our series circuit. Using cardboard, switches, some wires, 2 LEDs, and a battery pack, our team tested a simple series circuit.

IMG_6746.mov

Using the same materials from the series circuit, we practiced making a parallel circuit as well.

This is our team's TinkerCAD simulation of the Darlington Pair

Here we physically built our design from TinkerCAD onto a breadboard. Although we didn't have the correct resistors it still worked!

College Readiness activity built on TinkerCAD using AND and OR gates.

Truth table for our College. Readiness activity

Semiconductor Front-End Manufacturing Student Handout

TEAM 11: Semiconductor Front-End Manufacturing Student Handout.docx

Part 2: Rock Paper Scissors and starting Patient Monitoring Circuit

This morning our team started by working on the Rock Paper Scissors circuit activity. First, we connected a Microbit to our computer and followed the instructions to block code the game. Next, we made a truth table for all the possibilities in a Rock Paper Scissors game and then started creating a schematic on EveryCircuit. The Rock Paper Scissors game gave us a good background on making truth tables and designing using EveryCircuit. As part of our team worked on this game, others began working on the Patient Monitoring Circuit---making a truth table, deriving the equations, and creating the logic circuit on TinkerCAD. Below you can click through some photos of our work from Tuesday morning.

In the afternoon we began constructing our circuit onto the breadboard. Splitting the breadboard into two, we worked on sections of the wiring in groups. Henry built us an amazing diagram on TinkerCAD which was very easy for the rest of our group to follow when breadboarding our circuit. One issue we ran into during this process was not having a three-way switch, as we had built our circuit on TinkerCAD with a three-way switch. To solve this issue we were instructed to use 3 SPDT switches to mimic the three-way switch.

Logic circuit built on TinkerCAD

First attempt at breadboarded logic circuit

Part 3: Adding onto our Patient Monitoring Circuit

On Day 3 our team had a short day because we had a field trip to the Hyperion plant. Despite our limited time, our team tried to get as much work done as possible. To start our morning we worked on double checking our Logic Circuit and fixing any mistakes we had found. Luckily we double checked because there were a few missing wires! After we finished triple checking our breadboard our team decided to split up the tasks to complete them more efficiently. Some of our team worked on the design of our logic circuit on EveryCircuit, others built the alarm circuit on the breadboard, and lastly a group worked on the timing circuit on the breadboard. Below is a video of the Logic Circuit built on EveryCircuit and an image carousel showing the schematic with different amounts of indicators on.

Note: The LEDs are supposed to be Red, Green, and Yellow but EveryCircuit doesn't allow you to change the color of the lights.

This is as far as our team got with the logic circuit on Day 3

Part 4: Trying to finish the Patient Monitoring Circuit

This morning our team continued to work on our Patient Monitoring Circuit. Our team was able to get the Red LED to light up, but we were having issues with lighting up the yellow and green LED's. Since we couldn't isolate the problem, we decided to take apart and redo our whole Logic circuit. The last components we needed to finish were our Flip-Flop circuit and proof checking our Timing circuit. Both our timing circuit/alarm circuit were not working so we also decided it would be best to take them apart and restart the building process. After many attempts, we finally constructed a circuit that periodically worked.

Here is our red LED lighting up when three symptoms are triggered from our first design of our circuit.

Our new circuit design showing the green and red LEDs turning on.

Research Paper

Team 11 Research Paper (1).pdf

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