Project

# Title Team Members TA Documents Sponsor
30 Power Outlet Quality and Submeter System
Nicole Viz
Roshan Mahesh
Soham Manjrekar
Surya Vasanth design_document1.pdf
design_document2.pdf
final_paper1.pdf
presentation1.pdf
proposal1.pdf
proposal2.pdf
video1.mov
video2.mov
# Power Outlet Quality and Submeter System Project

Team Members:
- Nicole Viz (nviz2)
- Soham Manjrekar (sohammm2)
- Roshan Mahesh (roshanm2)

# Problem

In the rapidly evolving field of power electronics and energy technologies, maintaining consistent and high-quality power distribution and energy usage is critical for residential and commercial buildings. Using submeters can help create energy savings, lower operating costs, increase building efficiency and reliability, and improve occupant comfort. Devices today have several drawbacks, however. They can be cost-inefficient, complex to operate and to read, and they may lack real-time insights. Additionally, they may not employ sufficient power quality monitoring. These shortcomings can lead to difficulty in meeting recent sustainability efforts, and as such, an innovative solution is needed.

# Solution

For our project, we’d like to design and construct an improved device that monitors power quality and acts as a submeter to its loads – a device that is cost-effective, has high-fidelity data acquisition, and operates with an intuitive user interface LCD screen. Our project will solve the problems listed above by combining a power quality monitor along with a submeter in a cost-effective manner that stores real-time data and loads the data to a database that can be accessed through a website. More detailed specifications are presented below. We’ve divided our project into the following subsystems: Microcontroller/Software, Sensors and ICs, and Power. Note: We’ve looked into the work of a group who did a similar project last year and discussed some of the issues they faced; portions of this work will hopefully build on that and improve upon them.

# Solution Components

- Microcontroller/Software
1. ESP-32 or similar
- Offers DSP
- WiFi and Bluetooth Connectivity
- Allows for expansion GPIO to add additional storage
- Low power draw
2. SD Card Module
- To save data in the event of power loss
3. Google Cloud hosting MySQL database or similar
- Any online cheap database management system
- Sensors and ICs
1. Voltage Sensing via Voltage Divider
2. Current Transformer (PA1005.070QNL by Pulse Electronics), measures current as well
3. ADE9153A
- Single Phase Energy Metering IC
4. ADE9430
- Power Quality Metering IC
- Power
1. 5V Li ion Battery (or can investigate other battery options if there are safety concerns with Li ion)
2. 3.3V Linear Regulator (to power PCB with IC’s and microcontroller)

# Criterion for Success

Our criterion for success is divided up into the following 5 categories: software, operation, power quality measurement, submeter measurement, and miscellaneous. These are our criteria for success:
- Software
1. Online database that holds data such as timestamp, voltage, current, power, time of harmonic disturbances/power outages/voltage changes larger than 5%
- Upload data to database every 15 minutes using WiFi/bluetooth
2. Displays waveforms of power outlet current and voltage
3. Displays whether or not there’s a power quality issue (for harmonic disturbances/power outages/voltage changes larger than 5%), the type of issue, followed by a notification
- Operation
1. Self powering our device for at least 24 hours
- Power Quality Measurement
1. Record harmonic disturbances 20 ms before and after
2. Record voltage changes larger than 5%, or power failures
3. Send this data to database when failures/disturbances occur
- Submeter Measurement
1. Measure voltage, current, power of electrical load
2. Have an LCD Screen displaying instantaneous voltage, current, power
- Miscellaneous / Stretch Goals
1. Keep construction costs as low as reasonably possible
2. Make device lean and visually tidy

Cypress Robot Kit

Todd Nguyen, Byung Joo Park, Alvin Wu

Cypress Robot Kit

Featured Project

Cypress is looking to develop a robotic kit with the purpose of interesting the maker community in the PSOC and its potential. We will be developing a shield that will attach to a PSoC board that will interface to our motors and sensors. To make the shield, we will design our own PCB that will mount on the PSoC directly. The end product will be a remote controlled rover-like robot (through bluetooth) with sensors to achieve line following and obstacle avoidance.

The modules that we will implement:

- Motor Control: H-bridge and PWM control

- Bluetooth Control: Serial communication with PSoC BLE Module, and phone application

- Line Following System: IR sensors

- Obstacle Avoidance System: Ultrasonic sensor

Cypress wishes to use as many off-the-shelf products as possible in order to achieve a “kit-able” design for hobbyists. Building the robot will be a plug-and-play experience so that users can focus on exploring the capabilities of the PSoC.

Our robot will offer three modes which can be toggled through the app: a line following mode, an obstacle-avoiding mode, and a manual-control mode. In the manual-control mode, one will be able to control the motors with the app. In autonomous modes, the robot will be controlled based off of the input from the sensors.