• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Smart Structures and Integrated Systems >Rapid detection and identification of pedestrian impacts using a distributed sensor network
【24h】

Rapid detection and identification of pedestrian impacts using a distributed sensor network

机译：使用分布式传感器网络快速检测和识别行人碰撞

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Pedestrian fatalities from automobile accidents often occur as a result of head injuries suffered from impacts with an automobile front end. Active pedestrian protection systems with proper pedestrian recognition algorithms can protect pedestrians from such head trauma. An investigation was conducted to assess the feasibility of using a network of piezoelectric sensors mounted on the front bumper beam of an automobile to discriminate between impacts with "pedestrian" and "non-pedestrian" objects. This information would be used to activate a safety device (e.g., external airbag or pop-up hood) to provide protection for the vulnerable pedestrian. An analytical foundation for the object-bumper impact problem will be presented, as well as the classical beam impact theory. The mechanical waves that propagate in the structure from an external impact contain a wealth of information about the specifics of a particular impact - object mass, size, impact speed, etc. - but most notably the object stiffness, which identifies the impacted object. Using the frequency content of the sensor signals, it can be shown that impacts with a "pedestrian" object of varying size, weight, and speed can be easily differentiated from impacts with other "non-pedestrian" objects. Simulation results will illustrate this phenomenon, and experimental tests will verify the results. A comprehensive series of impact tests were performed for validation, using both a stationary front bumper with a drop-pendulum impactor and a moving car with stationary impact objects. Results from both tests will be presented.
机译：汽车事故造成的行人死亡通常是由于受到汽车前端撞击而导致头部受伤的结果。具有适当行人识别算法的主动行人保护系统可以保护行人免于头部受伤。进行了一项调查，以评估使用安装在汽车前保险杠横梁上的压电传感器网络区分“行人”和“非行人”物体的撞击的可行性。该信息将用于激活安全装置（例如，外部安全气囊或弹出式引擎盖），以为弱势行人提供保护。将提供对象保险杠碰撞问题的分析基础，以及经典的梁碰撞理论。由外部冲击在结构中传播的机械波包含大量有关特定冲击细节的信息-物体的质量，大小，冲击速度等-但最显着的是物体的刚度，它标识了被冲击的物体。使用传感器信号的频率内容，可以表明，大小，重量和速度各异的“行人”物体的撞击与其他“非行人”物体的撞击很容易区分开。仿真结果将说明这种现象，实验测试将验证结果。进行了一系列全面的冲击测试以进行验证，同时使用了带有落锤式冲击器的固定前保险杠和带有固定冲击物的移动汽车。将显示两个测试的结果。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号