Week 3

Circuit Design

Biomedical Engineering

Biomedical Engineering is the application of engineering in any field that deals with living things, including biology, medicine, and healthcare. Biomedical engineers can apply any field of engineering to tasks. For example, an engineer could use chemical engineering for pharmaceutical purposes or electrical engineering for monitoring patients.

Electrical Engineering

Electrical Engineering is the design, analysis, and use of electrical circuits. Electrical engineers use wires, switches, batteries, resistors, and more to create functioning and useful electric systems. These systems are used in everything electric, from lightbulbs to refrigerators to computers.

Their Interactions

Electrical Engineering is a field of Engineering that is harnessed by Biomedical Engineering. Biomedical Engineering uses Electrical Engineering to perform functions like patient monitoring. The circuitry of Electrical Engineering is used to respond to changes in the state of patients, and can be used as a status monitor or a way to alert staff automatically without need for a nurse to be by the side of a patient at all side.

Design Process

Our design process is as follows:

Brainstorm on how to wire the circuit
- Practice with the College Admissions Problem
- Practice with Series and Parallel Circuits
- Make the circuit in CircuitLab to test if it works
- Consolidate and Finalize the Circuit Design
Divide the work
- Build Main Logic Circuit
- Build Timer Circuit
- Builtd Alarm Circuit
Combine the different components to build the final circuit
Test the final circuit
- Troubleshoot if needed

Brainstorming

In order to design the circuit, we went through every possible input and assigned a corresponding output. We then created drawings of how each would be wired. Afterwards, we created a diagram of the full circuit with each output wired properly according to these drawings. Finally, we used CircuitLab to create a model of the final design, which you can find below.

covid-circuit (4).pdf

Our Logic Equation is :

XYZW'+XYZW+X'YZW'+X'YZW+XY'ZW+XY'Z'W+XYZ'W+XY'ZW'+X'YZ'W=1

College Admissions Problem

The problem is as follows: To get into a college, one must take the SAT or the ACT and take Geology or Psychology.

Pictured to the left is the Logic Circuit. Pictured below is the Truth Table for the problem.

Series Circuit

67899873153__AA02FDD8-F480-4637-AB4D-9408721B4D2B.mov

Parallel Circuit

67899919610__3E727426-6EBB-4D08-8E92-6F62CBB88A00.mov

Creating the Circuit

At this point, we broke into groups so that we could build the circuit faster and more efficiently. We used the given designs for the timer and the alarm circuits. As for the logic circuit, we used CircuitLab as our basis for the logic circuits and also color coded the wires by input(Yellow) and output(Blue).

Timer

Justin worked on the timer. Our version of the timer never worked, and power never seemed to run through the circuit. As a result, we ended up using the timer circuit from Group 5.

Alarm

John and Josh worked on the alarm. It worked perfectly on our first try so it didn't took us too much time.

MOV_6971.mov

Logic Circuits

Harry worked on the logic circuits. The wiring was tedious and confusing at times, but in the end it eneded up working. The only problem we did have was trouble shooting. Because the wires were color coded by input and output it was very difficult to trouble shoot.

Finished Design

Final Test

MOV_9317.mov

FAQ Video

Research Paper

Week 3 - Circuits

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