Project

# Title Team Members TA Documents Sponsor
61 Keyless Smart Lock (Secured Illini)
 Andrew Ruiz
Bowen Cui
Sebastian Sovailescu
 Sanjana Pingali design_document1.pdf
final_paper1.pdf
final_paper2.pdf
grading_sheet1.pdf
photo1.png
photo2.png
presentation1.pdf
proposal1.pdf
# Title
Keyless Smart Lock (Secured Illini)

# Team members

Sebastian Sovailescu (ss159)

Andrew Ruiz (ruiz25)

Bowen Cui (tianyuc3)

# Problem

In the darkest hours of the night, when the moon barely shines, grimy Chambana thieves creep up on bikes and snatch whatever they can: wheels, seats, and many times entire bicycles! Last semester, my bike was stolen right from in front of my apartment. My case is not isolated: according to data , hundreds of bikes are stolen every year in the CU area. For this reason, we want to design a smart bike lock that 1) deters thieves and 2) offers keyless capabilities.
# Solution


The proposed smart bike lock would include all the features of a conventional U-Lock (bolt cutter resistance, waterproof, etc.), but it would also come equipped with a loud siren that is triggered by unwanted tampering and real-time alerts to a cloud-based dashboard. To provide keyless capabilities, the MCU would include a Bluetooth chip that allows the user to enable/disable the lock using an app, and reset alarms.

# Solution Components

# # Subsystem 1 : Anti-Theft Subsystem

The accelerometer is used to detect tampering by recording unusual spikes in acceleration. Once an anomaly is detected, the alert system is triggered, which would activate the siren for a set amount of time. This would only occur when the FSM is in the armed state vs when in the unarmed state all sensors would be deactivated thus not leading to false alarms.

Microcontroller - ESP32-S3-WROOM-1U will interpret the readings from the accelerometer/gyroscope and activate the sirens when the readings are out of range.

Accelerometer - MPU6050 it has both accelerometer and gyroscope which would not only detect for sharp movement but also slower movement.

Siren -
PK-35N29WQ 12V 10mA relatively high power draw but in practice should not be active almost at all during typical usage can output 90dB

# # Keyless Locking:

The purpose of this system is to allow for keyless entry using a bluetooth capable device (phone). It should also allow for logging of past access attempts.The MCU keeps track of an FSM of two states, armed versus unarmed. In the locked and armed state, the microcontroller will switch between the locked and unlocked states based on a message over bluetooth


Components:
Bluetooth device - mobile phone with app to control locking of the bike and access a log of past unlocks or tampers.
Microcontroller - ESP32-S3-WROOM-1U - esp32 microcontroller to interface with the phone to control the locking and unlocking of the bike, and to log unlocks and tampers in conjunction with the accelerometer.

# # Subsystem 3: Power supply system
Our system is going to need 5V and 3.3V rails, so in order to reach out goal we will plan to use a Tenergy Rechargeable Battery and step up and down the voltages needed using asynchronous buck and boost converters to save on not needing as many signal amplifiers.

Components:

Battery - Samsung 21700 cells


# Criterion For Success
To achieve success for this project we will have a fully working locking mechanism with an app to access the locking mechanism as well as an alert system and BLE on the lock. We also will require the lock to have a siren to play to deter thieves. We also want to fully fledged out the app attached to our lock to see battery stats and to receive the alerts if it is being tampered with. If these core goals are completed we will then implement the app to include biking statistics such as movement, path traveled, etc as well as a GPS functionality on the lock to recover if lost.

Digitizing the Restaurant with Network-Enabled Smart Tables

Andrew Chen, Eric Ong, Can Zhou

Featured Project

# Students

Andrew Chen - andrew6

Eric Ong - eong3

Can Zhou - czhou34

# Problem:

The restaurant industry relies on relatively archaic methods of management and customer service. Internal restaurant computer systems are limited and rely on staff members to monitor customer status. Restaurants lack contact-free transactions for clientele.

# Solution Overview:

Our solution to this problem is to develop a standalone LAN restaurant network system to manage customer status and occupancy for restaurants without the need for personnel to monitor it manually. Along with this, to accommodate for contact-free interactions, we propose a system for payment methods. To address customer preferences, we will provide height accommodation built into the table for different types of people.

# Solution Components:

[Self-adjusting Customer Height Accommodation] - The table will be held up with a linear actuator, thus allowing for the overall height to be adjustable. The table will adjust its height accordingly to the customers’ heights once they sit down. We plan to make the table adjust the table’s height by measuring the distance between the bottom of the table with the customer’s knees when they are sitting down using ultrasonic sensors.

[NFC Payment and Card Reader Payment] - The table will have NFC reader and magstripe reader for contactless delivery. The payment data will be sent to the centralized hub for processing and confirmation.

[Table Pressure Sensor] - The status of a table will be gauged based on the amount of weight on the physical table itself. An occupied (or even just an unoccupied and dirty table) will be marked as such since the weight of excess food, water, plates, and whatever else the customer may bring will be measured by this pressure sensor.

[Computer Mesh Network] - We plan to create a mesh network of raspberry pi’s to track the status of tables in a restaurant. This network will communicate via some form of wireless communication (Wi-FI, bluetooth, or Zigbee).

# Criterion for Success:

This project seeks to create a solution in which restaurants can minimize customer interaction with features that accommodate individual needs, such as the height of the table and payment methods. This project will be considered successful with a working prototype that includes features that may be included in an actual restaurant setting.

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