Book Description

Dynamically, testing small, lightweight automobiles can be very difficult on a limited budget. Several quality data acquisition systems exist that are designed for automotive applications, but most are large cumbersome units that require an AC power inverter. It would not be possible to use one of these systems on a small lightweight vehicle, like a Formula SAE racecar. A device powered from a 12 volt DC power supply is required for this type of application. Also, typical data acquisition systems are far too bulky and costly to be fitted to a Formula SAE vehicle. As with any system, recording actual operating conditions will provide useful information, leading to system improvements. In order to achieve these goals, several data acquisition with telemetry systems were investigated. The most interesting system, Dataq DI-720-EN and Linksys wireless router, were purchased and characterized through a barrage of testing. The system was first characterized by logging a random signal and transferring the data through a typical wired setup. The system was then methodically tested in the lab with Ethernet wired and wireless data transfer methods. The data acquisition and telemetry system was also tested dynamically, on the 2004 Bearcat Motorsports FSAE vehicle, using wireless data transfer methods. The testing results were promising, with minimal signs of poor data. Some gaps were seen in the data, but were deemed insignificant for the majority of potential testing. Lastly, several likely improvements are discussed.