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1. 发明授权

US5620202A Interface between impact sensor and controller for a supplemental inflatable restraint system 失效
标题翻译：冲击传感器和控制器之间的接口，用于补充充气约束系统
公开(公告)号：US5620202A
公开(公告)日：1997-04-15
申请号：US376565
申请日：1995-01-23
申请人： Charles A. Gray , Sheri L. Patterson , Douglas A. Nunan , Richard J. Ravas, Jr. , Robert V. Krakora
发明人： Charles A. Gray , Sheri L. Patterson , Douglas A. Nunan , Richard J. Ravas, Jr. , Robert V. Krakora
IPC分类号： B60R21/01 , B60R21/32
CPC分类号： B60R21/01
摘要： A side impact sensor processes side acceleration signals and upon a crash event develops a deploy signal which comprises accurately timed pulses of preset duration including a single pulse wake up message and a multiple pulse deploy message. A single wire interface couples the deploy signal to a microprocessor in a central controller which manages deployment of side and frontal air bags and runs frontal impact algorithm. The pulse edges cause interrupts used to measure the pulse widths which are compared to stored values to verify the messages. A wake up pulse causes the microprocessor to give priority to an algorithm for processing the deploy message over the frontal algorithm and still service the frontal algorithm without degradation. Signal drivers in the side impact sensor impose sharp pulse edges for the deploy signal and sloping edges for other signals monitoring the state of health of the side sensor to reduce radiated emissions.
摘要翻译：侧面碰撞传感器处理侧面加速度信号，并且在碰撞事件发展部署信号时，其包括预定持续时间的准确定时脉冲，包括单脉冲唤醒消息和多脉冲部署消息。单线接口将部署信号耦合到中央控制器中的微处理器，该中央控制器管理侧面和正面安全气囊的部署并运行正面碰撞算法。脉冲边缘引起用于测量与存储值进行比较的脉冲宽度的中断，以验证消息。唤醒脉冲使得微处理器优先考虑用于通过正面算法处理部署消息的算法，并且仍然服务于正面算法而不降级。侧面碰撞传感器中的信号驱动器对部署信号和倾斜边缘施加了锐利的脉冲边缘，用于监测侧面传感器的健康状况以减少辐射发射的其他信号。

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