https://community.element14.com/technologies/automotive/w/documents/10015/freescale-s-automotive-dsi-airbag-systemen-USTelligent Community 12https://community.element14.com/technologies/automotive/w/documents/10015/freescale-s-automotive-dsi-airbag-systemFri, 08 Oct 2021 04:55:50 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:f10da5d5-5210-47ce-8e7c-e22620c47ab3autoembeddedhttps://community.element14.com/technologies/automotive/w/documents/10015/freescale-s-automotive-dsi-airbag-system#commentsCurrent Revision posted to Documents by autoembedded on 10/8/2021 4:55:50 AM<br /> <p style="margin:0;text-align:justify;">The central component of an airbag system is a control unit that combines a 16- or 32-bit MCU with a set of local acceleration sensors. Depending on the complexity of the system, additional satellite sensors provide supplementary crash information via a standardized sensor bus, such as the <a class="jive-link-external-small" href="http://ow.ly/bI7u3" rel="nofollow ugc noopener" target="_blank">Distributed System Interface (DSI)</a>. Processed sensor data is used to fire front, side and curtain airbags with specialized multi-channel squib driver circuits. </p><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;text-align:justify;">As an additional safety factor, highly-efficient switched-mode power supply components allow the system to keep operating for several hundred milliseconds if the battery connection is lost during an accident.</p><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;text-align:justify;"><span><a href="https://community.element14.com/resized-image/__size/365x255/__key/communityserver-wikis-components-files/00-00-00-00-11/contentimage_5F00_17766.jpg"><img alt="image" src="https://community-storage.element14.com/communityserver-components-secureimagefileviewer/communityserver/wikis/components/files/00/00/00/00/11/contentimage_17766.jpg-365x255.jpg?sv=2016-05-31&amp;sr=b&amp;sig=8OdbW8FOEqaLL7nxeIBN4d8jvx%2FtKEKwcFQJXN3bJHs%3D&amp;se=2026-08-21T23%3A59%3A59Z&amp;sp=r&amp;_=gzFzQJxaVXS1GZ9SxNd9Vw==" style="max-height: 255px;max-width: 365px;" /></a></span></p><p style="margin:0;padding:0px;">&nbsp;</p><h3 style="text-align:justify;">Advantages</h3><p style="margin:0;padding:0px;">&nbsp;</p><ul><li style="text-align:justify;">Complete chipset targeted at airbag systems that are based on DSI standard delivers cost savings, scalability, and decreased time to market </li><li style="text-align:justify;">Innovative MEMS-based satellite sensors and interial sensors designed for use as main crash sensor or safing sensor allow for improved performance and reduced overhead </li><li style="text-align:justify;">Scalable Qorivva 32-bit MCU family for safety applications, up to 512 KB Flash, separate Data Flash, all with Error Correction Code (ECC) </li><li style="text-align:justify;">Intelligent sensing technologies for front and side crash detection </li><li style="text-align:justify;">Xtrinsic X- and Z-axis over-damped inertial satellite sensors housed in a QFN package provide a smaller footprint and more flexibility for module orientation in vehicles </li><li style="text-align:justify;">Over-damped MEMS transducer and high resonance frequency package provide better immunity to overload conditions induced by high magnitude and frequency shocks </li><li style="text-align:justify;">Improved system reliability against parasitc vibrations due to Freescale&#39;s overdamped MEMS transducer </li><li style="text-align:justify;">Our Xtrinsic MMA16xx and MMA26xx satellite sensors, and the Qorivva MPC560xP and MPC574xP MCUs are <a class="jive-link-external-small" href="http://ow.ly/bI7gm" rel="nofollow ugc noopener" target="_blank">SafeAssure functional safety solutions </a></li><li style="text-align:justify;">Broad portoflio of 8- and 16-bit MCU for redundancy and safing functions </li><li style="text-align:justify;"><a class="jive-link-external-small" href="http://ow.ly/bI7lr" rel="nofollow ugc noopener" target="_blank">Freescale product longevity program</a> offers up to 15-year availability for selected product</li></ul><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: freescaledocs, transportation, freescale, car_safety, systems, automotive_safety, automotive, airbags, innovation</div>