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The Timing of Pre-Crash Data Recorded in General Motors Sensing and Diagnostic Modules
Technical Paper
2006-01-1397
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The sampling rate and synchronization of the pre-impact data stored by General Motors (GM) sensing and diagnostic modules (SDMs) have not been experimentally determined. The goals of this study were to measure the time shift between the SDM-reported data times and algorithm enable, sampling rate variation and the synchronization of the sensor data. In this study, two experiments were performed. First, the SDM of a 2002 Pontiac Sunfire was artificially triggered while the throttle position, engine speed, vehicle speed and brake signals were also being monitored at their source sensors. Second, the throttle and vehicle speed sensors were replaced with artificially generated inputs so the timing of the SDM recorded values could be compared to that of the known inputs. Sampling rate and data synchronization were determined by fitting the SDM recorded values to the measured sensor outputs. Both the field and laboratory tests showed that there was temporal uncertainty in all of the recorded pre-impact data. The SDM-reported pre-crash data points were sampled up to 1.5 s closer to algorithm enable than indicated in the SDM download. The study provides a better understanding of the effects of the pre-impact data timing for accident investigators.
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Citation
Wilkinson, C., Lawrence, J., Heinrichs, B., and King, D., "The Timing of Pre-Crash Data Recorded in General Motors Sensing and Diagnostic Modules," SAE Technical Paper 2006-01-1397, 2006, https://doi.org/10.4271/2006-01-1397.Also In
References
- Lawrence JM Wilkinson CC Heinrichs BE Siegmund GP 2003 The Accuracy of Pre-Crash Speed Captured by Event Data Recorders (2003-01-0889) Accident reconstruction (SP-1773) 211 215 Warrendale, PA Society of Automotive Engineers
- Niehoff Gabler Brophy Chidester Hinch Ragland 2005 Evaluation of Event Data Recorders in Full Systems Crash Tests International Technical Conference on the Enhanced Safety of Vehicles. Paper No. 05-0271
- Steiner JC 2003 Event Data Recorder Pre-Crash Data Sources for General Motors Vehicles Proceedings of the ASME International Mechanical Engineering Congress. Paper No. IMECE2003-41812
- Chidester Augustus “Chip” Hinch John Mercer Thomas C. Schultz Keith S. 1999 “Recording Automotive Crash Event Data,” International Symposium on Transportation Recorders Arlington, VA