Monitoring the Center of Gravity of a Vehicle Seat to Detect the Occupant Position

Designs Pub Date : 2024-05-15 DOI:10.3390/designs8030044
Alberto Vergnano, Claudio Giorgianni, Francesco Leali
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Abstract

Deploying an airbag when a vehicle occupant is too close to it can cause injury. An adaptive Airbag Control Unit (ACU) would improve the effectiveness of the safety system, provided it is aware of the actual position of the occupants once the crash is going to occur. Occupants can be monitored with vision-based and radar-based sensing in the vehicle, but the research question is whether other reliable devices exist. In this research, a real seat is equipped with four sensors in the supports from the floor, as well as an Inertial Measurement Unit (IMU) and a microcontroller. The device is capable of identifying correct position or different Out of Position (OP) conditions and inform an adaptive ACU. The paper presents the seat layout in detail and its testing in extensive driving experiments with multiple participants. Depending on the position of the driver, the identification is correct 45–100% of the time. Monitoring the occupant position by a sensorized seat is feasible and can improve the reliability of the onboard safety system when integrated with other occupant monitoring devices.
监测汽车座椅重心以检测乘员位置
当车内乘员离安全气囊太近时展开安全气囊可能会造成伤害。自适应安全气囊控制装置(ACU)可提高安全系统的有效性,但前提是它能在碰撞即将发生时了解乘员的实际位置。乘员可以通过车内基于视觉和雷达的传感装置进行监测,但研究的问题是是否存在其他可靠的装置。在这项研究中,一个真实的座椅从地板开始在支架上配备了四个传感器,以及一个惯性测量单元(IMU)和一个微控制器。该设备能够识别正确位置或不同的失位(OP)情况,并通知自适应 ACU。论文详细介绍了座椅布局及其在多人驾驶实验中的测试情况。根据驾驶员的位置,识别正确率为 45%-100%。通过传感座椅监测乘员位置是可行的,与其他乘员监测设备集成后,可以提高车载安全系统的可靠性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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