Assignment 3

Problem Statement

To design an automatic dog door security cover that can be used to open and close doors mechanically with an electronic motor. This device will be able to be set on a timer so that anyone can schedule when the security door raises and lowers. The device will be able to accommodate any sized dog door from small to large. The device will be powered by a gear used on the side that turns and opens the door via teeth on the side of the security shield. It will be easy to install for the customer and will include all necessary components.

Assumptions

This device should work for any size animal except for in some extreme cases of animal sizes under the condition that the homeowner has the space by their dog door to accommodate for the space needed to house the shield when it is open. There is also the assumption that the owner will know how to set operate the timer or use a potential app to control the shield

Pugh Decision Matrix

Through completing the Pugh Decision Matrix I was able to determine that the best strategy was the "Stay at home" option with the timer controlling what time the security shield opens and closes. The "Busy" option is something that could likely be expanded into at a later option because having App functionality can be very convenient. The "Seniors" option is the simplest offering a simple button to control the device. Sketches of all of the strategies with some calculations are provided below.

Sketches

Concept 1

Concept 2

Concept 3

Gantt Chart

Lessons Learned

1. Learned how to make a Pugh Decision matrix in Excel

2. Learned more about Coding in HTML

3. I learned the proper way of doing a FRDPARRC table

Activites Date and Time

Made sketches of design ideas - 10/20/2020 - 4:00pm - 5:00pm

Begun working on Pugh matrix - 10/21/2020 - 6:00pm - 9:30 pm