# Title Team Members TA Documents Sponsor
28 Wireless Power System for John Deere
Matthew Qi
Miguel Jimenez Aparicio
Bryce Smith
John Deere proposed an open-ended project to develop a power system to replace the hydraulics used in power transfer for their vehicles. They want to replace the need for tubing because it can break or cut in extreme applications. This system would potentially see use in heavy machinery such as logging vehicles. They seek a proof of concept for an alternative method of power transfer without the use of wires, preferably with some ball joint to allow motion.

Our proposed solution is to create a power system that utilizes resonant inductive coupling to transfer power wirelessly through a ball joint. This ball joint will be made of magnetic material to aid the magnetic field that will be key in transferring power. At the input and output of the system, we would implement power converters and their respective control systems, connecting them at the ball joint. Further additions can be made to improve the efficiency and functionality of the system, but the basis of the idea is a power system using a ball joint.

Research in wireless power transfer has been relatively recent, and we are now seeing it used in applications such phone and electric car chargers. Both of the examples, however, only utilize inductive charging. In our project, we will attempt to implement resonant inductive coupling to increase the range of operation of the joint. Furthermore, we will need to interface with the mechanical engineering group in order to design the mechanics surrounding the ball joint rather than rely solely on electronics. This project will focus on the unique application of a ball joint and resonant inductive coupling to create a proof of concept for wireless power transfer in relevant applications.

Bone Conduction Lock

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A lock that is unlocked using vibrations conducted through the bones in the user’s hand. The user wears a wristband containing a haptic motor. The haptic motor generates a vibration signal that acts as the "key" to the lock. When the user touches their finger to the lock, the signal is transmitted through the user’s hand and is received at the lock. If the lock receives the correct "key", then it unlocks.

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