Project

# Title Team Members TA Documents Sponsor
6 Elderly Homes Health Tracking System
Best Presentation Award
Aishee Mondal
Jeep Kaewla
Sanjana Pingali
Akshatkumar Sanatbhai Sanghvi design_document4.pdf
final_paper2.pdf
other1.pdf
photo2.jpg
photo3.jpg
presentation1.pptx
proposal2.pdf
video
# Elderly Homes Health Tracking System

Team Members:
- Aishee Mondal (aisheem2)
- Jeep Kaewla (ckaewla2)
- Sanjana Pingali (pingali4)

# Problem

Many elderly persons may live in elderly homes or retirement homes and have many health related problems. It might be difficult for the staff to be able to keep track of the health of all the individuals and ensure that they are able to keep performing their daily routine without additional assistance. It might be hard for them to track problems immediately due to difficulty communicating and the caretakers would not know when their health is deteriorating until their condition becomes very serious. In elderly homes or retirement centers, it might be hard to keep track of a number of elderly patients, especially when the technology like Apple Watches or Fitbits are not intuitive for older people or customized to their needs and are too expensive. It is not feasible to ask the staff to monitor each individualized fitbit and track it separately without a more centralized system.

# Solution

Describe your design at a high-level, how it solves the problem, and introduce the subsystems of your project.

In this situation, a cost effective device that keeps track of various health data such as heart rate, temperature, step counts, gps to track where they are, sleep tracking and their daily habits like how many times they visit the bathroom and the duration of time they are in the bathroom, and if there are any irregularities can be a good indicator of their health. Our web application would allow the elderly home caretakers to monitor multiple elderly people at once. A notification would be sent when there is an irregular/ critical heart rate/ breathing activity for a particular person. We could also potentially store past health data points to a database and monitor for any irregularities, or this can be used by doctors during checkups.

The subsystems are the health sensors, emitter, WIFI enabled microcontroller, and our web application.

# Solution Components

## Health Sensors

We would have different sensors to measure the different health parameters and indicators. These sensors will be placed either on some kind of sleeve on their wrist (for heart rate measuring) or a belt on the stomach to get direct measurements. We are planning on implementing the following sensors:
Temperature - NTC Thermistor by TE Connectivity
Heart Rate and BPM - PulseSensor
Sleep Tracking Sensor and Step Count : Accelerometer by BOSCH BMA400
GPS - PA1616D
Infrared Detector - to detect infrared radiation by the specific device when it receives a signal from the emitter system

Explain what the subsystem does. Explicitly list what sensors/components you will use in this subsystem. Include part numbers.

## Emitter Subsystem
This subsystem allows us to keep track of the number of times the bathroom is used and the number of times the bathroom is used. The sleeve would have an infrared detector and the bathroom facility would have two sensors - one at the entrance outside and one inside the bathroom once they enter. Depending on which sensor is detected first, we can see if they are entering or leaving the bathroom and this can help us keep track of the number of times they used it and the length of duration that they used it.

## WIFI enabled microcontroller
The various health sensors would send the health data over to the microcontroller. The microcontroller would then send these data to our database using HTTPs requests to our backend via the WIFI module. We assume that our devices would be used in elderly homes or retirement homes, so there would be WIFI available.

## Web Application
This web application would enable the staff to monitor multiple elderly at once in one page. This application would be a full - stack web application, using MERN stack (MongoDB, Express, React, Node). We would design the database schema, front end, and backend. If there is an irregular activity, we would send out an alert. This page would be updated periodically close to real-time.

# Criterion For Success

Describe high-level goals that your project needs to achieve to be effective. These goals need to be clearly testable and not subjective.

- Send out an alert on the web applications when the heart rate is below a certain threshold or temperature is not within acceptable range for healthy person
- Able to measure the data from all the sensors and send it to the microcontroller and store in the database

Phone Audio FM Transmitter

Madigan Carroll, Dan Piper, James Wozniak

Phone Audio FM Transmitter

Featured Project

# Phone Audio FM Transmitter

Team Members:

James Wozniak (jamesaw)

Madigan Carroll (mac18)

Dan Piper (depiper2)

# Problem

In cars with older stereo systems, there are no easy ways to play music from your phone as the car lacks Bluetooth or other audio connections. There exist small FM transmitters that circumvent this problem by broadcasting the phone audio on some given FM wavelength. The main issue with these is that they must be manually tuned to find an open wavelength, a process not easily or safely done while driving.

# Solution

Our solution is to build upon these preexisting devices, but add the functionality of automatically switching the transmitter’s frequency, creating a safer and more enjoyable experience. For this to work, several components are needed: a Bluetooth connection to send audio signals from the phone to the device, an FM receiver and processing unit to find the best wavelength to transmit on, and an FM transmitter to send the audio signals to be received by the car stereo.

# Solution Components

## Subsystem 1 - Bluetooth Interface

This system connects the user’s phone, or other bluetooth device to our project. It should be a standalone module that handles all the bluetooth functions, and outputs an audio signal that will be modulated and transmitted by the FM Transmitter. Note: this subsystem may be included in the microcontroller.

## Subsystem 2 - FM Transmitter

This module will transmit the audio signal output by our bluetooth module. It will modulate the signal to FM frequency chosen by the control system. Therefore, the transmitting frequency must be able to be tuned electronically.

## Subsystem 3 - FM Receiver

This module will receive an FM signal. It must be able to be adjusted electronically (not with a mechanical potentiometer) with a signal from the control system. It does not need to fully demodulate the signal, as we only need to measure the power in the signal. Note: if may choose to have a single transceiver, in which case the receiver subsystem and the transmitter subsystem will be combined into a single subsystem.

## Subsystem 4 - Control System

The control system will consist of a microcontroller and surrounding circuitry, capable of reading the power output of the FM receiver, and outputting a signal to adjust the receiving frequency, in order to scan the FM band. We will write and upload a program to determine the most suitable frequency. It will then output a signal to the FM transmitter to adjust the transmitting frequency to the band determined above. We are planning on using the ESP32-S3-WROOM-1 microcontroller given its built-in Bluetooth module and low power usage.

## Subsystem 5 - Power

Our device is designed to be used in a car, so It must be able to be powered by a standard automobile auxiliary power outlet which provides 12-13V DC and usually at least 100W. This should be more than sufficient. We plan to purchase a connector that can be plugged into this port, with leads that we can wire to our circuit.

# Criterion for Success

The device can pair with a phone via bluetooth and receive an audio signal from a phone.

The Device transmits an FM signal capable of being detected by a standard fm radio

The Device can receive FM signals and scan the FM bands.

The digital algorithm is able to compare the strength of different channels and determine the optimal channel.

The device is able to automatically switch the transmitting channel to the predetermined best channel when the user pushes a button.