Week 2: Patient Monitoring

Team B Group 10

Matthew Ren, Ritvik Satapathy, Kerim Reka, Aiden Wu, Neel Sodhi

Biomedical Engineering/Bioengineering

Bioengineering and biomedical engineering is a field that combines physics and engineering principles to design equipment, software, or tools that serve medical purposes; such purposes include diagnosing medical issues, making prosthetic body parts, and making replacement organs. Bio and biomedical engineers often work in research or laboratory settings to design technologies that improve human health. These technologies function at both the macroscopic and microscopic level. Engineers might also write research papers about new medical technologies used, as well as test the effectiveness of the applications of their theories, tools, or technology.

Electrical Engineering

Started at the latter half of the 19th century, electrical engineering is a field that deals with the study, design, and application of electronic devices. There is a wide range of fields, including systems engineering, telecommunications, signal processing, and optics and photonics. Many of these fields overlap, and there are a lot of super-specialized fields. Electrical Engineering requires an understanding of the theory and laws that govern electric and magnetic behavior. Computer simulations and knowledge in mathematics, chemistry, and physics help engineers succeed at their jobs. Some things engineers work on include: the power grid, manufacturing chips for electronics, and making lights for offices.

Research Paper Link: Commercial Circuit Design

Commercial Circuit Design Research Paper - Team B Grp. 10 Wk. 1

Pre-Design Process Skillbuilding

TinkerCAD Simulation

Rock Paper Scissors Circuit

Learned how to use Quad-Input gates and Hex Inverters through the TinkerCAD simulation
Practiced creating truth tables and deriving Boolean algebra equations
Simulated logic in EveryCircuit
Practiced EE concepts using the Microbit

EveryCircuit Simulation

Boolean Algebra and Truth Table

Microbit Activity

Design Process

Define the problem
Generate alternative solutions
Evaluate and select a solution
Detail the design
Defend the design
Manufacture and test the design
Evaluate the performance of the design
Prepare the final design report

Step 1: Define the problem

Identified the need to create a patient monitor that took 3 inputs representing symptoms and lit a green LED, yellow LED, red LED, and sounded an alarm accordingly using logic gates based on the input permutations.

Steps 2, 3, 4: Generate alternative solutions, evaluate and select a solution, and detail the design

Visualized the logic behind our gate schematic by creating a truth table and Boolean algebra equations for our patient monitor
Simulated our logic and Boolean algebra using websites online (logic.ly) until we created working gate schematics

Boolean Algebra Equations

Patient Monitor Truth Table

Green LED

Red LED & Alarm

Yellow LED

Optimized gate schematics by simplifying gate paths and working within constraints (ex. finding ways to use less gates and still have effective logic, creating schematics that did not use NAND, XOR, or XNOR gates, etc.)
Evaluated each gate schematic in the simulations before deciding on the simplest and most effective model
Designs were detailed in the simulations through visible inputs, connections, outputs, and gate types.

Full Circuit

(logic.ly)

Step 5: Defend the design (Not Applicable)

Step 6: Manufacture and test the design

Full LED Logic Circuits

Note: The yellow LED on the breadboard with the red LED's logic is supposed to represent the alarm circuit, which was not shown in this photo

555 Timer Calculator

LED Logic Testing

Manufactured logic.ly simulation schematics for the LEDs using breadboards and gate/inverter ICs
Pin connections made based on pin diagrams from each IC's datasheet
Tested designs by hooking up a 6V battery cage and using SPST switches as inputs

555 Timer and Flip-flop IC Testing

Manufactured 555 timer and flip-flop circuits based on provided schematics and datasheets
Again, pin connections made based on pin diagrams from each IC's datasheet
Tested designs by hooking up a 6V battery cage (no inputs)
Physically varied resistance and capacitance to change the 555's frequency

555 Timer Circuit

555 + Flip-flop (Failed)

Yellow LED Circuit

Green LED Circuit

Red LED Circuit

Step 7: Evaluate the performance of the design

Video of Testing LEDs

The 555 did not oscillate between high and low states as expected after following the given diagram.
The LED and alarm logic in the physical design were both successful after being tested with SPST inputs; the green LED lit up when all inputs were off, the yellow LED lit when only one input was on, the red LED lit when two or more inputs were on, and the substitute alarm LED lit when all three inputs were on.

Step 8: Final design report

We were unable to get either 555 timer to oscillate
We were unable to make a working flip-flop to check the input statuses
Our design had successful logic with lighting LEDs based on different input permutations

Page updated

Google Sites

Report abuse