Project

# Title Team Members TA Documents Sponsor
71 Gloves That Allow You To 'Feel' Electromagnetic Fields
Baleigh Clark
Bryn Carroll
Prabhakar Zutshi
Anthony Caton design_document4.pdf
final_paper1.pdf
presentation2.pptx
proposal1.pdf
Prabhakar Zutshi
Baleigh Clark
Bryn Carroll

The job titles ‘Electrical Worker’ and ‘First Responder’ consistently rank in the top ten most dangerous jobs in the United States. There are around two deaths by electrocution per day for electrical workers in the US and even more in less developed countries with less rigorous safety standards. These deaths frequently come as a result of accidentally touching a live wire the individual was not aware of, voltage leaks, arc flashes, etc. We need a measure to reduce the number of these preventable deaths.

The proposed device is a pair of wearable, insulated gloves that can detect the induced electromagnetic fields (EMF’s) generated by AC power lines and wires from a distance. The gloves would then vibrate with increased intensity the closer/stronger the field became. This tactile response would inform the electrician or first responder of a nearby live wire/electrical source that could harm them, that they may or may not have been aware of previously.

There are two potential designs we would like to pursue. A magnetometer based glove, and an electric field meter based glove. The magnetometer based glove would most likely utilize the MAG3110 IC. This magnetometer would be able to detect the alternating magnetic field generated by the wires. It's fast data sampling rate would allow us to determine if the magnetic field we are detecting is indeed generated by an AC wire. There is also little ambient magnetic noise in the environment reducing the need for much signal processing. The microcontroller would then take those field strengths and translate it into vibration via the vibration disks implanted in the glove.

The second design that we could use is a electric field meter design. This design uses the electric fields generated by all charges to serve as our signal. I don't have a concrete recommendation for the exact detector we will use, but it will either be a electrometer (Capacitively coupled D.C amplifier with a shunt capacitor for calibration) type or an A.C carrier type, as they are low cost, simple and small; all properties we desire. The ambient electric fields in our environment are often large due to electronics so we will need to be able to zero it in respect to it's environment. Thankfully, electric field strength increases greatly, so any large spikes in electric field strength could be the filter we need to determine if we are detecting the correct signal.

For more details you can read my longer proposal with background research, reasons for specific parts, block diagrams, etc, here:

https://docs.google.com/document/d/1SDqJiLE59OytJiulvoklQ0PvZipEGRYTKCieBVbPgdI/edit?usp=sharing

Prosthetic Control Board

Caleb Albers, Daniel Lee

Prosthetic Control Board

Featured Project

Psyonic is a local start-up that has been working on a prosthetic arm with an impressive set of features as well as being affordable. The current iteration of the main hand board is functional, but has limitations in computational power as well as scalability. In lieu of this, Psyonic wishes to switch to a production-ready chip that is an improvement on the current micro controller by utilizing a more modern architecture. During this change a few new features would be added that would improve safety, allow for easier debugging, and fix some issues present in the current implementation. The board is also slated to communicate with several other boards found in the hand. Additionally we are looking at the possibility of improving the longevity of the product with methods such as conformal coating and potting.

Core Functionality:

Replace microcontroller, change connectors, and code software to send control signals to the motor drivers

Tier 1 functions:

Add additional communication interfaces (I2C), and add temperature sensor.

Tier 2 functions:

Setup framework for communication between other boards, and improve board longevity.

Overview of proposed changes by affected area:

Microcontroller/Architecture Change:

Teensy -> Production-ready chip (most likely ARM based, i.e. STM32 family of processors)

Board:

support new microcontroller, adding additional communication interfaces (I2C), change to more robust connector. (will need to design pcb for both main control as well as finger sensors)

Sensor:

Addition of a temperature sensor to provide temperature feedback to the microcontroller.

Software:

change from Arduino IDE to new toolchain. (ARM has various base libraries such as mbed and can be configured for use with eclipse to act as IDE) Lay out framework to allow communication from other boards found in other parts of the arm.