Project

# Title Team Members TA Documents Sponsor
24 Smart Closet
Luchuan Zhang
Yiwei Li
Luke Wendt design_document0.pdf
design_document0.pdf
final_paper0.pdf
presentation0.pptx
presentation0.pptx
proposal0.pdf
video
The problems: It's hard for people to organize their clothes in traditional closet, and easily forget which clothes they already have when they want to buy new clothes online or in store. Forget which clothes should do laundry.

Existed solutions: Mostly are customized traditional closets. Some smart closet apps need users to take pictures and upload, too time-consuming. And these apps do not associated with users' closets.

Our solution: The closet will take pictures of any new add clothes. It will count the days you worn each clothes and display on the phone. It can indicate which clothes to pick and to wash by different color of LED on clothes hanger and notice you when the laundry basket is full.

Hardware: A motor controlled rotatable rack. On the rack there are around 20 gates to place clothes, each gate has a number assigned. A control panel (micro controller is expected) decides how long rack should rotate, when to photo, and use WiFi to connect with phone. A photo booth aside. LED system to indicate which clothes to pick also controlled by micro-controller. Weight sensor to measure the weight of laundry basket also linked to controller. This micro-controller may infer to Raspberry Pi.

Software: Phone app. Each clothes has a database: type, picture (new clothes will have no picture), number of the gate (will be assigned a new number if put in again and will be null if clothes is outside of closet), status of need photo or not, and worn days. App will send the specific gate number to the control panel, and all the information control panel get will be updated on the phone.

Control System and User Interface for Hydraulic Bike

Iain Brearton

Featured Project

Parker-Hannifin, a fluid power systems company, hosts an annual competition for the design of a chainless bicycle. A MechSE senior design team of mechanical engineers have created a hydraulic circuit with electromechanical valves, but need a control system, user interface, and electrical power for their system. The user would be able to choose between several operating modes (fluid paths), listed at the end.

My solution to this problem is a custom-designed control system and user interface. Based on sensor feedback and user inputs, the system would change operating modes (fluid paths). Additionally, the system could be improved to suggest the best operating mode by implementing a PI or PID controller. The system would not change modes without user interaction due to safety - previous years' bicycles have gone faster than 20mph.

Previous approaches to this problem have usually not included an electrical engineer. As a result, several teams have historically used commercially-available systems such as Parker's IQAN system (link below) or discrete logic due to a lack of technical knowledge (link below). Apart from these two examples, very little public documentation exists on the electrical control systems used by previous competitors, but I believe that designing a control system and user interface from scratch will be a unique and new approach to controlling the hydraulic system.

I am aiming for a 1-person team as there are 6 MechSE counterparts. I emailed Professor Carney on 10/3/14 and he thought the general concept was acceptable.

Operating modes, simplified:

Direct drive (rider's pedaling power goes directly to hydraulic motor)

Coasting (no power input, motor input and output "shorted")

Charge accumulators (store energy in expanding rubber balloons)

Discharge accumulators (use stored energy to supply power to motor)

Regenerative braking (use motor energy to charge accumulators)

Download Competition Specs: https://uofi.box.com/shared/static/gst4s78tcdmfnwpjmf9hkvuzlu8jf771.pdf

Team using IQAN system (top right corner): https://engineering.purdue.edu/ABE/InfoFor/CurrentStudents/SeniorProjects/2012/GeskeLamneckSparenbergEtAl

Team using discrete logic (page 19): http://deepblue.lib.umich.edu/bitstream/handle/2027.42/86206/ME450?sequence=1