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Article: Data acquisition drives vehicle development. (Data Acquisition).
- Article from:
- EE-Evaluation Engineering
- Article date:
- July 1, 2002
- Author:
CopyrightCOPYRIGHT 2002 Nelson Publishing. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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In-vehicle data acquisition is nothing new. For many years, public safety and the operating expenses of large trucks have been simultaneously addressed by the tachograph, a paper-disk-based chart recorder installed in the cab of a truck. Road speed, engine rpm, and distance traveled are recorded vs. time. Analysis of the recording can reveal over-revving, downhill coasting out of gear, harsh acceleration and braking, speeding, and long periods of driving without a break.
Modern versions of the tachograph, such as the VDO FM100 Fleet Management System, use an on-board computer to log relevant vehicle data for up to 650 miles. Data is downloaded to a PC via a secure ...