Project

# Title Team Members TA Documents Sponsor
8 PERSISTANCE OF VISION MUSIC VISUALIZER
Area Award: Art and Music
 Adam Belkhadir
Alex Dutrow
John Tran
 Dongwei Shi design_document0.pdf
final_paper0.pdf
other0.pdf
presentation0.pptx
presentation0.pptx
proposal0.pdf
Innovation:
Potential marketing and entertainment.

Idea:
The idea is to have a spinning bar of LED's create a persistence of vision circular screen and to then input audio to the system as well as external / internal speakers to display the frequency spectrum response of the audio. We are creating a screen that can map anything; however we would like to use our knowledge of DSP to map a circular frequency spectrum visualizer that we would implement from the ground up. The LED bar would be about a foot in length such that the diameter of the circular screen being created is ~ 2 feet.

Implementation:
A DC brushless motor would spin the strip of LEDs with an encoder to sense the position of the bar such that we could determine what to display at what point in the cycle. A DC power supply would be utilized in order to power the system and any other components. LED density would be covered by individual addressable LED's (part #WS2812). Time permitting, other features that could be added would be Bluetooth compatibility as well as having the ability to display external microphone signals.

High Level Scope:
Create the circuit and necessary components such as the LED strip such that we can create the screen. Then we would move on to the DSP portion and porting the signal to the system to display it. Time permitting, we would add additional features as mentioned.

Alex Dutrow (dutrow2), Adam Belkhadir (belkhad1), John Tran (jvtran2)

Electronic Replacement for COVID-19 Building Monitors @ UIUC

Patrick McBrayer, Zewen Rao, Yijie Zhang

Featured Project

Team Members: Patrick McBrayer, Yijie Zhang, Zewen Rao

Problem Statement:

Students who volunteer to monitor buildings at UIUC are at increased risk of contracting COVID-19 itself, and passing it on to others before they are aware of the infection. Due to this, I propose a project that would create a technological solution to this issue using physical 2-factor authentication through the “airlock” style doorways we have at ECEB and across campus.

Solution Overview:

As we do not have access to the backend of the Safer Illinois application, or the ability to use campus buildings as a workspace for our project, we will be designing a proof of concept 2FA system for UIUC building access. Our solution would be composed of two main subsystems, one that allows initial entry into the “airlock” portion of the building using a scannable QR code, and the other that detects the number of people that entered the space, to determine whether or not the user will be granted access to the interior of the building.

Solution Components:

Subsystem #1: Initial Detection of Building Access

- QR/barcode scanner capable of reading the code presented by the user, that tells the system whether that person has been granted or denied building access. (An example of this type of sensor: (https://www.amazon.com/Barcode-Reading-Scanner-Electronic-Connector/dp/B082B8SVB2/ref=sr_1_11?dchild=1&keywords=gm65+scanner&qid=1595651995&sr=8-11)

- QR code generator using C++/Python to support the QR code scanner.

- Microcontroller to receive the information from the QR code reader and decode the information, then decide whether to unlock the door, or keep it shut. (The microcontroller would also need an internal timer, as we plan on encoding a lifespan into the QR code, therefore making them unusable after 4 days).

- LED Light to indicate to the user whether or not access was granted.

- Electronic locking mechanism to open both sets of doors.

Subsystem #2: Airlock Authentication of a Single User

- 2 aligned sensors ( one tx and other is rx) on the bottom of the door that counts the number of people crossing a certain line. (possibly considering two sets of these, so the person could not jump over, or move under the sensors. Most likely having the second set around the middle of the door frame.

- Microcontroller to decode the information provided by the door sensors, and then determine the number of people who have entered the space. Based on this information we can either grant or deny access to the interior building.

- LED Light to indicate to the user if they have been granted access.

- Possibly a speaker at this stage as well, to tell the user the reason they have not been granted access, and letting them know the

incident has been reported if they attempted to let someone into the building.

Criterion of Success:

- Our system generates valid QR codes that can be read by our scanner, and the data encoded such as lifespan of the code and building access is transmitted to the microcontroller.

- Our 2FA detection of multiple entries into the space works across a wide range of users. This includes users bound to wheelchairs, and a wide range of heights and body sizes.