# Title Team Members TA Documents Sponsor
9 Wireless EKG/ECG
Halim Park
Juhyeon Lee
Ye Li
Pooja Bhagchandani final_paper1.pdf
# Wireless EKG/ECG

# Team Members:
- Halim Park (halimp2)
- Juhyeon Lee (jlee803)
- Ye Lin (yel3)

# Problem

Conventional EKG/ECGs involve wires, which can be tedious to deal with, considering many cases of emergency situations where every second counts. 12 leads are usually needed for clinical diagnosis to know which part of the heart is behaving abnormally, and 10 electrodes are placed on the chest of a patient. Wires can tangle up and intrude the process of clinical diagnosis.

# Comparison with existing products
Apple Watch: can only monitor 1 lead (Lead I), hence not suitable for medical use.
Zio Patch and BardyDx CAM : also can monitor only 1 lead
Kardiomobile 6L: It can monitor 6 leads, but only the frontal plane leads (shown in blue below). It does not monitor the horizontal plane leads (V1~V6) which gives a horizontal view of the heart, and that is essential for accurate clinical diagnosis.


# Solution
Sponsored by medical student Kenny Leung, this project’s goal is to design a wireless device to measure EKG, eliminating issues associated with wires. This project aims to create the first device on the market that does not need the electrodes to be across the heart to obtain EKG data - using voltage difference between the electrodes. As Kenny describes: “ It uses a concept that is proven in research, called body surface potential mapping, which is at any point in time, every point in your chest has a different electric potential”.
Our goal is to design and theoretically build a 12-lead wireless EKG. In this project, we will be developing two devices among the twelve as a starting point, since two are sufficient to test all the major technical aspects of the project (e,g,, wireless transmission, amplifying voltages, etc.). The design of the device is subject to change during the process. However, it is essential that each device should be attachable to the skin, where the disposable EKG patches should be removed and installed easily.

# Solution Components

## Power Module
The power module supplies power to the microcontroller and the amplifier. It should provide sufficient power or bias for desired behavior.

## Skin Patch Module
The device is big enough to hold the necessary components, such as power supply and circuit board, and small enough to carry in an emergency situation. It also has some sort of mechanism to keep the patch on the body. This patch should be able to measure the voltage data that is to be processed by the rest of the subsystems

## Signal Amplification and Filtering
For a typical EKG, the voltage reading ranges from 0.1mV to 10mV. In order to have these readings digitally, an amplifier should be designed. Moreover, research shows that data within the frequency range of 0 to 30Hz is desired, so a passive second-order low pass filter will be designed to filter out noises of the signal as well as noises from the power supply, which is typically around 60Hz. An oscilloscope will be used to determine the desired cutoff frequency.

## Data Transmission Module
Reflecting on the previous semester’s analysis, we aim to use Bluetooth protocol to transmit data to the receiver. Each device should send the data measurements to the computer. It should keep the unit of transmission small enough for accurate and timely results (e.g, within 40 ms). One of the advantages of using Bluetooth is that the master receiving device can have multiple connections simultaneously.

## Data Visualization
We will visualize the transmitted data (ideally in a form of the traditional EKG signal graph) after noise reduction.

# Criterion For Success
Successfully implement two devices that will be attached to a body
Can transmit wirelessly at a small rate (ideally within 40 ms)
Show a visual representation of the transmitted data (e.g., graph) on a monitor

Cloud-controlled quadcopter

Anuraag Vankayala, Amrutha Vasili

Cloud-controlled quadcopter

Featured Project


To build a GPS-assisted, cloud-controlled quadcopter, for consumer-friendly aerial photography.


We will be building a quad from the frame up. The four motors will each have electronic speed controllers,to balance and handle control inputs received from an 8-bit microcontroller(AP),required for its flight. The firmware will be tweaked slightly to allow flight modes that our project specifically requires. A companion computer such as the Erle Brain will be connected to the AP and to the cloud(EC2). We will build a codebase for the flight controller to navigate the quad. This would involve sending messages as per the MAVLink spec for sUAS between the companion computer and the AP to poll sensor data , voltage information , etc. The companion computer will also talk to the cloud via a UDP port to receive requests and process them via our code. Users make requests for media capture via a phone app that talks to the cloud via an internet connection.

Why is it worth doing:

There is currently no consumer-friendly solution that provides or lets anyone capture aerial photographs of them/their family/a nearby event via a simple tap on a phone. In fact, present day off-the-shelf alternatives offer relatively expensive solutions that require owning and carrying bulky equipment such as the quads/remotes. Our idea allows for safe and responsible use of drones as our proposed solution is autonomous, has several safety features, is context aware(terrain information , no fly zones , NOTAMs , etc.) and integrates with the federal airspace seamlessly.

End Product:

Quads that are ready for the connected world and are capable to fly autonomously, from the user standpoint, and can perform maneuvers safely with a very simplistic UI for the common user. Specifically, quads which are deployed on user's demand, without the hassle of ownership.

Similar products and comparison:

Current solutions include RTF (ready to fly) quads such as the DJI Phantom and the Kickstarter project, Lily,that are heavily user-dependent or user-centric.The Phantom requires you to carry a bulky remote with multiple antennas. Moreover,the flight radius could be reduced by interference from nearby conditions.Lily requires the user to carry a tracking device on them. You can not have Lily shoot a subject that is not you. Lily can have a maximum altitude of 15 m above you and that is below the tree line,prone to crashes.

Our solution differs in several ways.Our solution intends to be location and/or event-centric. We propose that the users need not own quads and user can capture a moment with a phone.As long as any of the users are in the service area and the weather conditions are permissible, safety and knowledge of controlling the quad are all abstracted. The only question left to the user is what should be in the picture at a given time.

Project Videos