Project

# Title Team Members TA Documents Sponsor
16 Intelligent fire protection ecosystem
 Honglei Zhu
Jiawei Zhu
Xiaohua Ding
Yiyang Liu
 design_document1.pdf
design_document2.pdf
proposal1.pdf
proposal2.pdf
proposal3.pdf
 Yu Lin
#TEAM MEMBERS:
- Honglei Zhu
- Jiawei Zhu (jiawei6)
- Xiaohua Ding (xiaohua5)
- Yiyang Liu (yiyang24)

# PROBLEM

Traditional fire protection systems often rely on outdated equipment and simplistic detection methods, leading to inefficiencies and potential safety hazards. Current smoke sensors, sound alarms, and manual alarm buttons lack the sophistication needed to accurately detect and respond to fire incidents promptly. Additionally, conventional systems may suffer from high rates of false alarms, causing unnecessary disruptions and desensitizing occupants to genuine threats.

Moreover, the limited capabilities of traditional systems hinder their ability to adapt to evolving fire risks and environments. With the increasing complexity of modern buildings and the prevalence of diverse fire hazards, there is a growing need for intelligent fire protection solutions that can analyze fire information comprehensively, distinguish genuine threats from false alarms, and transmit critical fire signals remotely to safeguard lives and property effectively.

# SOLUTION OVERVIEW

Enhance the efficiency of conventional fire alarm apparatus while modernizing standard smoke sensors, auditory and visual alert systems, and manual alarm activation mechanisms. This advanced system is equipped with the capability to meticulously analyze data derived from fire sensors, enabling precise determination of fire occurrences. Additionally, it facilitates remote transmission of fire alerts, thereby ensuring swift responses to potential hazards, ultimately safeguarding both lives and property.

# SOLUTION COMPONENTS

## BLUETOOTH CONTROL SYSTEM:

- Apply a user-friendly mobile application interface for remote control and monitoring of the fire protection system via Bluetooth connectivity.

- Implement secure Bluetooth communication protocols to ensure data integrity

## CIRCUIT SYSTEM:

- Design and prototype circuit boards to integrate various sensors, alarms, and communication modules into a cohesive system.

- Conduct rigorous testing and optimization of circuit designs to ensure reliability and efficiency in operation under different environmental conditions.

## SENSOR SYSTEM:

- Research and select advanced smoke sensors with improved detection capabilities.

- Integrate additional sensors for detecting environmental factors like temperature, humidity, and gas levels to enhance fire detection accuracy.

## PHYSICAL APPEARANCE SYSTEM:

- Design aesthetically pleasing enclosures and housings for the fire protection system components, considering factors such as durability, ease of installation, and maintenance.

- Incorporate visual indicators and status lights into the design to provide intuitive feedback to users about the system's operational status.

## DATA ANALYSIS SYSTEM:

- Develop algorithms for real-time analysis of sensor data to accurately detect and classify fire incidents while minimizing false alarms.

- Implement data logging and storage mechanisms to maintain a record of fire events and system performance for later analysis and optimization.

## USER INTERFACE SYSTEM:

- Design intuitive interfaces for both physical control panels and mobile applications to facilitate user interaction with the fire protection system.

- Conduct usability testing and gather feedback to refine the user interface design for enhanced user experience and accessibility.

# CRITERION FOR SUCCESS

## RELIABILITY AND ACCURACY:
The system should demonstrate consistent and accurate fire detection capabilities, minimizing false alarms while promptly identifying genuine fire incidents.

## REMOTE ACCESSIBILITY
Users should be able to access and control the fire protection system remotely via Bluetooth connectivity or mobile application, ensuring timely response and management of fire-related emergencies.

## ENERGY EFFICIENCY
Energy consumption should be optimized to maximize battery life and minimize environmental impact, ensuring continuous operation even during power outages.

## COMPLIANCE AND SAFETY
The system should meet or exceed industry standards and regulatory requirements for fire protection, ensuring the safety of occupants and compliance with legal obligations.

## RELIABLE COMMUNICATION
The communication system should demonstrate high reliability and resilience, ensuring seamless transmission of fire alerts and system status updates to designated recipients in real-time.

# DELIVERABLES

- Fire alarm signal remote reminder, alarm signal transmission to cell phone applet and cell phone SMS reminder

- Linkage control between devices, detecting the fire signal can be linked to trigger the sound and light alarms.

- A variety of fire information collection, carbon monoxide, smoke concentration, temperature sensor specific values, human infrared signal detection, comprehensive analysis of big data to reduce the probability of false alarm trigger

- Development of fire information feedback platform, a fire alarm signal can be analyzed according to the data of a variety of detectors, to build fire models

- Design a fire control host, able to unify control

# DISTRIBUTION OF WORK

- ME Student Xiaohua Ding and Honglei Zhu perform product design and design shelves for final display.

- EE Student Jiawei Zhu and Yiyang Liu is responsible for writing Bluetooth transmission programs and designing the virtual circuits associated with them.

- All team members are involved in PCB soldering, circuit debugging and assembly.

Wireless Charging Table Supporting Multiple Devices with Arbitrary Placement

Kaiwen Cao, Tianyi Han, Tingkai Liu, Zikai Liu

Featured Project

# Wireless Charging Table Supporting Multiple Devices with Arbitrary Placement

# Problem

While more and more device manufacturers adopt wireless charging into their smartphones and headphones, most currently available wireless charging pads only support a single device and require strict alignment between the device and the coil. Misalignment can negatively influence both user experience and charging efficiency. In certain scenarios such as cafeterias, a table that can simultaneously charge multiple devices with arbitrary placement can be useful and COOL, allowing the users to sit wherever they like and to arbitrarily place their devices.

# Solution Overview

We intend to design and manufacture a table with multiple mobile coils placed in an intermediate layer below. Driven by step motors, a tool grabber attaches the coils using electromagnets and drop them in the right place. Computer vision will be used to recognize devices (phones, AirPods, etc.) and guide the chargers to corresponding locations. Once the coil is in place, it will first communicate with the device (Qi protocol) to verify whether the device can be charged wirelessly. If yes, the charging process will start. Otherwise, the coil will be moved back to its original location. The scheduling algorithm ensures the wires get separated and neat.

# Solution Components

* Mechanical subsystem. The main moving component of the system is a large-scale X-Y moving mechanism under the table. The coils will be placed between two panels above the moving mechanism and will be caught and dropped to the right place by the moving tool head. The tool head will be developed with electromagnets or magnets with Z-axis moving capability.

![sketch](https://courses.grainger.illinois.edu/ece445zjui/pace/getfile/18618)

* Vision detection subsystem. This includes a camera and a processing unit. It detects the locations of phones and other chargeable devices and send their positions to the control unit. In real-world settings, pre-installed surveillance cameras may be used as the video source so that no additional camera is required. Embedded GPU (NVIDIA Jetson Nano as a candidate) or cloud service can be used for image processing.

* Power supply control. It is used to control wireless chargers and supply power to devices if and only if the handshake between charger and device is successful. Status will be reported to the central control unit.

* Central control unit and embedded software. According to the output given by the vision detection system or the feedback from the power supply system, the central control unit should move the chargers with proper scheduling algorithm to pair chargers with devices and keep wires of coil separated and neat.

# Criterion for Success

* The vision detection system can localize chargeable device at an accuracy of over 80% and response within 2s.

* The power system can supply powers when a chargeable device is present, and not supply power when the misdetection happens. Correct feedback can be sent to the central control system.

* The mechanical system moves correctly according to the commands given by the central control system.

* The central control system can send correct commands to the mechanical system given the position information from the vision system and the feedback from the power supply system. It should be able to keep wires of charging coil separated.

# Evaluations on Alternative Solutions

The technology of wireless charging emerged some time ago, but its inclusion in commercial devices doesn’t take off until recent years. Intuitively, wireless charging doesn’t bring much additional convenience compared to the wired charging, but its adoption by major manufacturers has proven its value. Similarly, in certain settings such as the cafeteria, charging without alignment may significantly increase user experience, comparing to having only a few fixed charging locations.

An alternative solution to enable table-scale wireless charging is to deploy multiple coils covering the whole table. But it doesn’t solve the alignment problem unless the coils are heavily overlapped, which has been proven to be difficult by already canceled Apple AirPower.