# Title Team Members TA Documents Sponsor
Jiahe Liu
Qingtao Hu
Zeyu Zhang
Zhen Qin design_review
Inspired by the vacancy indicator in the modern parking structure and the project 39 in Fall 2017, we want to design and implement an occupancy detection system for outdoor parking.

The system would consist four modules:
- Detection module: ultrasonic proximity detectors (similar to the parking sensor mounted on car's bumper). Each detector has its emitter and receiver. When the wave hits an object nearby, its reflection would be recorded. With certain wave intensity threshold selected, the detector would know if there is a car parked in its duty range. Detectors would be mounted on parking meters or some support stands on the ground.

- Control module: central management system. It would keep track of spot occupancy by constantly communicating with detectors under its control. Inter-device communication is based on WLAN. Besides, the control module is responsible for notifying users (drivers or parking enforcement) about the parking occupancy information.

- Notification module: parking assistant application. We plan to write a mobile application for our detection system, sharing the updated occupancy information upon inquires. The control module would push the detector feedback into an online data storage. When a user starts an inquiry, the application fetches data and display it to the user.

- Power module: power support of our detection system. We plan to use rechargeable solar cells to power the detection module. But for the power-intensive control module, we may need to use extra power from wall plug for demo purpose.

Team members: Qingtao Hu (qhu13), Jiahe Liu (jliu143), Zeyu Zhang (zzhan127)

Filtered Back – Projection Optical Demonstration

Tori Fujinami, Xingchen Hong, Jacob Ramsey

Filtered Back – Projection Optical Demonstration

Featured Project

Project Description

Computed Tomography, often referred to as CT or CAT scans, is a modern technology used for medical imaging. While many people know of this technology, not many people understand how it works. The concepts behind CT scans are theoretical and often hard to visualize. Professor Carney has indicated that a small-scale device for demonstrational purposes will help students gain a more concrete understanding of the technical components behind this device. Using light rather than x-rays, we will design and build a simplified CT device for use as an educational tool.

Design Methodology

We will build a device with three components: a light source, a screen, and a stand to hold the object. After placing an object on the stand and starting the scan, the device will record three projections by rotating either the camera and screen or object. Using the three projections in tandem with an algorithm developed with a graduate student, our device will create a 3D reconstruction of the object.


• Motors to rotate camera and screen or object

• Grid of photo sensors built into screen

• Light source

• Power source for each of these components

• Control system for timing between movement, light on, and sensor readings