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A Preliminary Study on the Restraint System of Self-Driving Car
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2020 by SAE International in United States
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Due to the variation of compartment design and occupant’s posture in self-driving cars, there is a new and major challenge for occupant protection. In particular, the studies on occupant restraint systems used in the self-driving car have been significantly delayed compared to the development of the autonomous technologies. In this paper, a numerical study was conducted to investigate the effectiveness of three typical restraint systems on the driver protection in three different scenarios. It is found that based on the simulation results: (1) All the restraint systems are capable of providing effective protection for the driving driver and the 4-point belt restraint system has advantages due to its better protective effect on the occupant thorax; (2) When the driver is in half-reclining and reclining resting modes, head HIC36, neck Nij and chest compression are about 572.9-1524.3, 0.64-1.47, and 14.7-48.3 mm, respectively; These values are higher than those of a driving driver by 0.2%-198.3% for HIC36, 113.3%-359.4% for neck Nij, and -59.6%-79.8% for chest compression, respectively. (3) There is an evident “submarining” of dummy in the half-reclining and reclining resting modes. This study shows that the mainstream restraint system cannot meet the safety requirements for occupants with multi-postures in the self-driving cars. Smart restraint systems which can be actively adjusted for protecting occupants sitting in different postures are deemed to be necessary in case of unavoidable crashes.
CitationJiang, B., Ren, H., Zhu, F., Chou, C. et al., "A Preliminary Study on the Restraint System of Self-Driving Car," SAE Technical Paper 2020-01-1333, 2020, https://doi.org/10.4271/2020-01-1333.
Data Sets - Support Documents
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