Takubo, N.
[Author];
Oga, R.
[Author];
Kato, K.
[Author];
Hagita, K.
[Author];
Hiromitsu, T.
[Author];
Ishikawa, H.
[Author];
Kihira, M.
[Author]
;
National Research Institute of Police Science <Chiba>
[Contributor]
Evaluation of event data recorder based on crash tests
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Media type:
Electronic Conference Proceeding
Title:
Evaluation of event data recorder based on crash tests
Contributor:
Takubo, N.
[Author];
Oga, R.
[Author];
Kato, K.
[Author];
Hagita, K.
[Author];
Hiromitsu, T.
[Author];
Ishikawa, H.
[Author];
Kihira, M.
[Author]
imprint:
German Federal Highway Research Institute (BASt): Electronic BASt Archive (ELBA), 2012-08-13
Language:
English
Origination:
Footnote:
Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
Description:
Event Data Recorder (EDR) is an additional function installed in airbag control module (ACM) to record vehicle and occupant information for a brief period of time before, during, and after a crash event. EDRs are now being installed in ACMs by several automakers in the USA and in Japan. The aim of this study is to understand the performance of EDRs for the improvement of accident reconstruction with more reliable information. In the first report of the study, data obtained from EDRs of seven vehicle types were evaluated using 2006-2007 J-NCAP (Japanese new car assessment program) full-lap frontal barrier crash tests and offset frontal deformable barrier crash tests data. For more practical standpoint, we conducted thirteen crash tests reconstructing typical real-world accidents such as single vehicle accidents with barriers or poles, car to car accidents and multi rear-end collisions focusing on Japanese typical accident types. Data obtained from EDRs are compared with data obtained from optical speed sensor, instrumented accelerometers and high speed video cameras. The velocities determined from pre-crash data of EDRs and the maximum change in velocity, delta-V, and delta-V time history data obtained from post-crash data of EDRs are analyzed. The results are as follows: - Pre-crash velocities of EDRs were very accurate and reliable. An average difference between the EDR recording values and reference speeds was 4.2% and a root mean square of the differences was 9.2%. Only two cases resulted large differences for the pre-crash velocity. Both of them were cases with braking prior to the collision. However, another test with braking resulted less difference. The braking condition may influence accuracy of pre-crash velocities. - Maximum delta-Vs obtained from the EDRs showed uncertainty of measurement in several cases in comparisons with the reliable delta-V data. The differences in maximum delta-V were more than 10% in five of twenty-five events data and more than 20% in two of twenty-five events data. An average ...