Currently working on VRS (Virtual Reference Station) in networking/hardware.
WAAS (June 2004-Current):
Currently working on WAAS (Wide Area Augmentation System - it's in your GPS) in networking.
UPWS (Universal Pedestrian Warning System (November 2008 - Current):
UPWS is a Raytheon project designed for pedestrian safety as a MAJOR upgrade to the CPWS system. The UPWS system is a highly modular and mobile system designed specifically for outdoor, roadside use. Unlike CPWS, UPWS works without any vehicle counterpart, even though it still broadcasts the same CPWS message for any receiving car's safety application.
The system can descriminate between a wide variety of objects and warns those targets in danger using horns warning units (PWD). The same camera grouping (PDE) is used but integrated into a single unit and transmits wirelessly or over ethernet back to the central processing unit (PPP).
Although not working with Toyota this year, we are now working with the UC Berkeley and Riverside PATH testing facilities as well as CalTrans.
I again designed the hardware system from the ground up. Shown below are the breadboards for the PWD RX and TX nodes which are later converted into PCBs and mounted into the NEMA boxes.
UPWS System Testing
UCI - VLSI - 7 Bit Flash ADC (Spring and Fall, 2008):
At UCI I successfully designed, drew (Cadence Layout), fabricated (Mosis Fabrication), and tested a 7 bit flash ADC. The below picture is one taken with my camera and a microscope adapter I picked up.
CPWS (Cooperative Pedestrian Warning System (2007 - November 2008):
CPWS is a Raytheon project designed for pedestrian safety. The CPWS system uses a thermal and high resolution camera to view pedestrian movements. This camera grouping removes the shadowing issue from the video analytic subsystem allowing for precise geo-positioning of pedestrian movement. Once the pedestrians have been mapped onto a GPS coordinate grid, the grid and future projections are sent over a patent pending interface to a vehicle over a wireless DSRC link. If the vehicle computes a collision it notifies the driver and trips the warning light and siren. This project was executed in conjunction with Toyota or more specifically, the TEMA subsystem.
I was in charge of the Hardware as the lead, but also was a major contributor to the programming effort and initial system design.
The system was demonstrated at ITS World Congress in New York in November of 2008. That is me pictured below in the cool of the night troubleshooting the system after an RF cable failed. Eventually I threw a wireless bridge in there so we could work inside the convention center. But lugging the 800+lbs unit up 11th avenue every morning was a feat! What a fun experience!
Although I was the only one to make it into the article, a credit to JR Richardson and Gregory Mosley for their amazing efforts on the project.
NorCal40A (November 2005):
The NorCal40A is a CW radio built by Christopher Higgins from the PCB up.