Project :: ECE 445 - Senior Design Laboratory

#	Title	Team Members	TA	Documents	Sponsor
35	Privacy-protected Elderly monitoring system: Wi-Fi and wearable sensors	Jincheng Zhou Junyue Jiang Pu Lin Zizhao Cao		final_paper1.pdf final_paper2.pdf final_paper3.pdf other1.pptx other2.pdf proposal2.pdf proposal1.pdf	Huan Hu
	# Problem Due to their busy work schedules, many families are faced with the inevitable situation of leaving the elderly alone at home. This makes it a challenge to respond to emergencies of elderly falls at home and to monitor the health of the elderly. There is a need for a way to remotely know the activities and health status of the elderly at home. # Solution Overview Our solution for above problem is that use Wi-Fi devices that could send Wi-Fi signals for motion detection while ensuring data privacy and make wearable devices with multiple sensors attached to assist Wi-Fi monitoring. We will build an integrated monitoring system combining Wi-Fi monitoring devices and wearable sensors used for emergency happening in old people’s home. # Solution Components ## Detection Subsystem - Wi-Fi devices sending Wi-Fi signal providing most data - Wearable devices with sensors providing data for assistence ## Processing and Output Subsystem - Algorithm that identify present situation - User Interface that send alarm to remote device. # Criterion for Success - Common Wi-Fi devices that can be used to obtain the desired Wi-Fi signal - Wearable devices that are convenient and less likely to leak private information - Algorithms that quickly and accurately determine the current situation - Simple and easy-to-use user interfaces and alerts.

Featured Project

# TEAM MEMBERS

Chentai Yuan (chentai2)

Guanshujie Fu (gf9)

Keyi Shen (keyis2)

Yichi Jin (yichij2)

# TITLE OF THE PROJECT

Digital Controlled LED Rotating Display System

# PROBLEM

By visual persistence phenomenon, we can display any images and strings with a rotating LED array. Many devices based on this idea have been developed. However, there are some common issues to be solved. First, the images or strings to be displayed are pre-defined and cannot be changed in a real-time way. Second, the wired connection between some components may limit the rotation behavior, and harm the quality of display. Some economical wireless communication technologies and new ways to connect components can be applied to achieve a better display and real-time image update.

# SOLUTION OVERVIEW

We aim at developing a digital controlled LED rotating display system. A servo motor is controlled to drive the stick with one row of LED to do circular rotation. The connection between LEDs, control circuit, motor and other components should be simple but firm enough to suppose good display and high-speed rotation. Moreover, there is another part to handle users’ input and communicate with the display part via Bluetooth to update images in a real-time and wireless way.

# SOLUTION COMPONENTS

## Subsystem1: Display Subsystem

- LED Array that can display specific patterns.

- Controller and other components that can timely turn the status of LEDs to form aimed patterns.

## Subsystem2: Drive Subsystem

- Servo motor that drive of the LED array to do circular rotation.

- Controller that communicates with the motor to achieve precise rotation and position control.

- An outer shell that has mechanisms to fix the motor and LED array.

## Subsystem3: Logic and Interface Subsystem

- Input peripherals like keyboard to receive users’ input.

- A FPGA board for high-level logics to handle input, give output and communicate with other subsystems.

- Wireless communication protocol like Bluetooth used in communication.

- VGA display hardware offering Graphical User Interface.

# CRITERION OF SUCCESS

- Users can successfully recognize the real-time patterns to be displayed.

- It achieves the precise rotation and position control of motor.

- The motor can drive the LED array and any necessary components to rotate stably and safely.

- The LED array is under real-time control and responds rapidly.

- The communication between components has low latency and enough bandwidth.

# DISTRIBUTION OF WORK

- Chentai Yuan(ME): Mechanisms and servo motor control.

- Guanshujie Fu(CompE): Logic and Interface design and keyboard & VGA display implementation.

- Keyi Shen(EE): Wireless communication and servo motor control.

- Yichi Jin(EE): Circuit design, keyboard & VGA display implementation.