Our Team

Team members and their responsibilities

Overview

Problem statement and proposed solution

Hardware

Overview of hardware components (block diagram, components)

Software

Overview of embedded and mobile softwares

Progress & Goals

Accomplishments so far and future timeline

Risk Analysis

Risk factors and areas of concern

Feature-Heavy

Many features are included to improve marketability

Not Health Focused

Meaningful health data (outside of exercise) is rarely collected and analyzed

Expensive

Specialized UI and unnecessary features inflate price

UI Focused

Specialized UI design leads to non-intuitive interface

Affordable

Minimal features and simple design will keep price low

Essentialist

Include only features that are essential to device functionality

Specialized

Specialized purpose provides additional benefits to particular populations

Intuitive

Simple, streamlined UI will allow users to easily use device

Data-Driven

Collect and analyze meaningful data to produce useful insights

Benefits

• Resting heart rate
• Estimated blood pressure
• Sleep detection
• Step detection
• Fall detection
• Health warnings

Synthesized Outputs

• Buttons for inputs
• Vibration for notifications
• LCD display
• Companion application provides a more sophisticated interface

User Interface

• Heart rate
• Blood oxygen
• Accelerometer
• Gyroscope
• Noise level
• Weather
• Indoor Air Quality
• Body temperature

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Wearable�Sensors

• Accelerometer
• Gyroscope
• Ambient light sensor
• Built-in step counter
• Microphone
• Bluetooth

Smartphone Features Used

TMP117

Body temperature sensor

ADMP401

Analog-output decibel sensor

ST7789V

LCD display driver

MAX30101 &

MAX32664

Optical heart rate sensor & data processor

BME688

Temperature, pressure, humidity, & AQI sensor

LSM9DS1

Accelerometer, gyroscope, & magnetometer sensor

• ARM Cortex-M4 CPU

• 1 MB flash storage and 256 KB RAM

• On-board ADC, DAC, and Bluetooth 5

• Several low-power operating modes

• Supports I2C, SPI, � UART, and GPIO � communications

Specifications

• Speed facilitates multiple concurrent measurements

• Bluetooth 5 makes smartphone communication straightforward

• Memory is sufficient for on-board data storage

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Key Features

BME688

• Communicates using I2C

• Measures:� - Temperature� - Barometric pressure� - Relative humidity� - Gas resistance

• Used to analyze environmental conditions for safety

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Sensor Details

• Communicates using I2C

• Measures temperature via contact with skin

• Frequently used in healthcare products, evidencing precision

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Sensor Details

TMP117

• Communicates using SPI

• Contains an accelerometer, magnetometer, and gyroscope

• Provides data for step counting, sleep tracking, � and fall detection

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Sensor Details

LSM9DS1

• Optical heart rate sensor

• Measures blood flow and color through analyzing reflected light emitted by LEDs

• Receives commands � and transmits data to � MAX32664 for analysis � using I2C

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MAX30101 Details

MAX30101 &

MAX32664

• Sensor controller hub compatible with MAX30101

• Sends commands to and received data raw from MAX30101 over I2C

• Receives commands and � sends computed heart rate � and oxygen saturation � to microcontroller � via I2C

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MAX32664 Details

• MEMS microphone that detects volume level

• Outputs volume as analog voltage

- Captured by on-� board ADC

• Omnidirectional – � captures sound well � from any direction

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Sensor Details

ADMP401

• Display driver that communicates via SPI

• 16-bit color depth

• Connects to display with ribbon connector

• Compatible with LCD displays up to 240x320 resolution

- Allows us to change � displays later if � needed

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Sensor Details

ST7789V

Button to manage bluetooth connection to smartphone

Connection Button

Button to toggle display modes (and other actions)

Function Button

Generic 3.7V Lithium Polymer battery; capacity TBD

Battery

Creates vibrations to send tactile notifications

Haptic Motor

Wrote driver code to interface with all devices

Device Drivers

Built circuit to confirm concurrent functionality of all components

System Test

Selected and acquired all required components

Components

Selected and acquired all necessary components

PCB Design

Spring Quarter

Implement ML features, refine enclosure, further develop custom app UI

End of Fall Quarter

Complete as much of PCB design as possible

Winter Quarter

Finish PCB design, design simple enclosure, display all data in companion app

Progress So Far

Implemented driver code for all sensors and completed prototype circuit

Potential Issues

Our intended design is small in size and some of our components have limited availabilities

PCB Design

We may face difficulties in processing and extracting meaningful conclusions from our collected data

Data Analysis

No team members have experience in this area, which could prove problematic

Enclosure Design

Excessive power consumption and poor resource management could drain our battery

Battery Life