Project

# Title Team Members TA Documents Sponsor
26 Wearable Air Quality Monitor
 Xin Yang
Ziheng Li
Zonghan Yang
 Chentai (Seven) Yuan design_document1.pdf
proposal2.pdf
proposal1.pdf
# **Wearable Air Quality Monitor**

Team Members:

• Ziheng Li (zihengl5)

• Xin Yang (xiny9)

• Zonghan Yang (zonghan2)

# **Problem**

Air pollution has been a growing global concern. The World Health Organization estimates the air breath by 9 out of 10 people containing high levels of pollutants, leading to billions of people suffering in health issue related to it. Despite this severe situation, most individuals lack real-time information about the air quality in their current environment. And existing air quality monitors are often expensive, with prices ranging from $100 to several hundred dollars, which is not affordable to every individual. In addition, most air quality monitors are designed for fixed location and often contains limited information.

# **Solution**

We propose a wearable air quality monitor that can track crucial air quality parameters such as temperature, humidity, PM2.5, PM10, and CO2. Our solution aims to address the following key points:
1. Affordability: By optimizing component selection, we aim to keep the price of our device between $50-80, making it 2 times more affordable than current market alternatives.
2. Portability: The compact and wearable design ensures users can monitor air quality wherever they go.
3. Comprehensive monitoring: Our device will track multiple air quality parameters to provide an overview of the environment.
4. Real-time data and notifications: The device will connect to smartphones via Bluetooth or Wi-Fi to provide real-time data and send notifications when air quality is bad.
5. User guidance: Based on the detected air quality, the device will suggest actions such as wearing a mask, closing windows, or avoiding outdoor activities.

# **Solution Components**

**Sensor Subsystem**

This subsystem will handle all data measurements, including temperature, humidity, CO2 level, and pollutants like PM2.5 and PM10.

Components:
- Temperature and Humidity Sensor: SHTC3

- Particulate Matter Sensor: PMS5003

- CO2 Sensor: (Specific part number to be determined)

**Processing Subsystem**

The core of our processing subsystem will be responsible for collecting sensor data, performing necessary calculations, and evaluating whether air quality thresholds are exceeded.

Components:

- Microcontroller: (specific model to be determined)

**Communication Subsystem**

This subsystem will allow the device to communicate with a user's smartphone via Bluetooth or Wi-Fi. It will send data to the connected mobile app and send notifications if air quality get worse.

Components:

- Built-in Bluetooth and Wi-Fi capabilities of the microcontroller

**User Interface Subsystem**

This subsystem will provide immediate visual feedback to users.

Components:

- OLED Display: (Specific part number to be determined)

**Power Subsystem**

This subsystem will manage power supply, charging, and discharging.

Components:

- 5V Rechargeable Lithium Battery: (Specific part number to be determined)
- Power Management IC: (Specific part number to be determined)
- Voltage regulator

**Outer-packaging Subsystem**

This subsystem will focus on the physical aspects of the device, including protection and wearability.

Components:

- 3D-printed outer shell
- Clip for attachment to backpack or clothing

# **Criterion For Success**

1. Cost Effectiveness: The final product cost should not exceed $80, making it at least 50% cheaper than the lowest-priced comparable product on the market.
2. Accuracy: The device should achieve accuracy rates within ±10% of readings from professional-grade air quality monitors for PM2.5, PM10, and CO2 measurements.
3. Battery Life: The device should operate continuously for at least 24 hours on a single charge under normal usage conditions.
4. Response Time: The device should detect significant changes in air quality and send notifications to the connected smartphone within 60 seconds.
5. Durability: The device should continue to function normally after from -10-120 Fahrenheit.
6. User Interface: Users should be able to read and interpret the OLED display data at the first use.
7. Connectivity: The device should maintain a stable Bluetooth or Wi-Fi connection with the smartphone app at a distance of up to 5 meters.
8. Size and Weight: The final product should not exceed the dimensions of 15cm x 15cm x 15cm and should weigh less than 500 grams.
9. Custom PCB Design: Design a custom PCB that integrates all necessary components while meeting the size and power requirements of the device.

Smart Frisbee

Ryan Moser, Blake Yerkes, James Younce

Smart Frisbee

Featured Project

The idea of this project would be to improve upon the 395 project ‘Smart Frisbee’ done by a group that included James Younce. The improvements would be to create a wristband with low power / short range RF capabilities that would be able to transmit a user ID to the frisbee, allowing the frisbee to know what player is holding it. Furthermore, the PCB from the 395 course would be used as a point of reference, but significantly redesigned in order to introduce the transceiver, a high accuracy GPS module, and any other parts that could be modified to decrease power consumption. The frisbee’s current sensors are a GPS module, and an MPU 6050, which houses an accelerometer and gyroscope.

The software of the system on the frisbee would be redesigned and optimized to record various statistics as well as improve gameplay tracking features for teams and individual players. These statistics could be player specific events such as the number of throws, number of catches, longest throw, fastest throw, most goals, etc.

The new hardware would improve the frisbee’s ability to properly moderate gameplay and improve “housekeeping”, such as ensuring that an interception by the other team in the end zone would not be counted as a score. Further improvements would be seen on the software side, as the frisbee in it’s current iteration will score as long as the frisbee was thrown over the endzone, and the only way to eliminate false goals is to press a button within a 10 second window after the goal.