Project

# Title Team Members TA Documents Sponsor
12 Bench Organizer
 Liangcheng Sun
Max Mu
 Maanas Sandeep Agrawal final_paper1.pdf
grading_sheet1.pdf
other1.pdf
presentation1.pdf
proposal1.pdf
# Bench Organizer
## Team Members:
- Liangcheng Sun (ls25)
- Xiaohu Mu (xiaohum2)
# Problem

Most desk organizers only store items and don’t help users stay organized or productive. People often lose track of small items like pens or keys, which makes working harder. Digital tools exist, but they don’t work well with physical workspaces. We need a better way to help people keep their bench tidy and stay focused.

# Solution

We aim to create a Bench Organizer that detects and tracks items to help users stay organized. It will use RFID technology to know if items like pens are in the right place and send reminders if something is missing. The system will also include a custom PCB to connect and manage all components. The system will also include extra features like a wireless charging pad and Bluetooth notifications if time allows.

# Solution Components

## Item Detection Subsystem

This subsystem will use RFID technology to track items in the organizer. It will incorporate NFC stickers attached to items like pens and keys, and an embedded NFC reader (e.g., PN532 module) in the organizer to detect their presence. The microcontroller (e.g., Arduino Uno) will process the data and check if each item is in its correct spot. This subsystem will send the detection results to the notification subsystem.

## Notification Subsystem

This subsystem will alert users if any items are missing or misplaced. It will use LED lights to indicate the missing items and a buzzer for sound alerts. Additionally, a Bluetooth module (e.g., HC-05) can send notifications to a smartphone or computer. This subsystem will receive data from the item detection subsystem and trigger the appropriate notifications.

## PCB Subsystem

The PCB will be designed and fabricated to integrate all the components of the organizer. It will act as the central hub to connect all other components. This part will ensure proper power distribution to each subsystem, including voltage regulation for different components.

# Criterion For Success

The organizer must detect and track items with at least 90% accuracy in tests. It must notify users when items are missing or misplaced. Additionally, this system should work well under normal indoor lighting. Extra features, if added, should work smoothly without affecting the main functions.

Resonant Cavity Field Profiler

Salaj Ganesh, Max Goin, Furkan Yazici

Resonant Cavity Field Profiler

Featured Project

# Team Members:

- Max Goin (jgoin2)

- Furkan Yazici (fyazici2)

- Salaj Ganesh (salajg2)

# Problem

We are interested in completing the project proposal submitted by Starfire for designing a device to tune Resonant Cavity Particle Accelerators. We are working with Tom Houlahan, the engineer responsible for the project, and have met with him to discuss the project already.

Resonant Cavity Particle Accelerators require fine control and characterization of their electric field to function correctly. This can be accomplished by pulling a metal bead through the cavities displacing empty volume occupied by the field, resulting in measurable changes to its operation. This is typically done manually, which is very time-consuming (can take up to 2 days).

# Solution

We intend on massively speeding up this process by designing an apparatus to automate the process using a microcontroller and stepper motor driver. This device will move the bead through all 4 cavities of the accelerator while simultaneously making measurements to estimate the current field conditions in response to the bead. This will help technicians properly tune the cavities to obtain optimum performance.

# Solution Components

## MCU:

STM32Fxxx (depending on availability)

Supplies drive signals to a stepper motor to step the metal bead through the 4 quadrants of the RF cavity. Controls a front panel to indicate the current state of the system. Communicates to an external computer to allow the user to set operating conditions and to log position and field intensity data for further analysis.

An MCU with a decent onboard ADC and DAC would be preferred to keep design complexity minimum. Otherwise, high MIPS performance isn’t critical.

## Frequency-Lock Circuitry:

Maintains a drive frequency that is equal to the resonant frequency. A series of op-amps will filter and form a control loop from output signals from the RF front end before sampling by the ADCs. 2 Op-Amps will be required for this task with no specific performance requirements.

## AC/DC Conversion & Regulation:

Takes an AC voltage(120V, 60Hz) from the wall and supplies a stable DC voltage to power MCU and motor driver. Ripple output must meet minimum specifications as stated in the selected MCU datasheet.

## Stepper Drive:

IC to control a stepper motor. There are many options available, for example, a Trinamic TMC2100. Any stepper driver with a decent resolution will work just fine. The stepper motor will not experience large loading, so the part choice can be very flexible.

## ADC/DAC:

Samples feedback signals from the RF front end and outputs the digital signal to MCU. This component may also be built into the MCU.

## Front Panel Indicator:

Displays the system's current state, most likely a couple of LEDs indicating progress/completion of tuning.

## USB Interface:

Establishes communication between the MCU and computer. This component may also be built into the MCU.

## Software:

Logs the data gathered by the MCU for future use over the USB connection. The position of the metal ball and phase shift will be recorded for analysis.

## Test Bed:

We will have a small (~ 1 foot) proof of concept accelerator for the purposes of testing. It will be supplied by Starfire with the required hardware for testing. This can be left in the lab for us to use as needed. The final demonstration will be with a full-size accelerator.

# Criterion For Success:

- Demonstrate successful field characterization within the resonant cavities on a full-sized accelerator.

- Data will be logged on a PC for later use.

- Characterization completion will be faster than current methods.

- The device would not need any input from an operator until completion.

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