Automotive engineers: This airbag reference platform is for you*

autoembedded — Fri, 08 Oct 2021 04:21:24 GMT

Current Revision posted to Documents by autoembedded on 10/8/2021 4:21:24 AM

By Marc Osajda — If you want to help contribute to reducing road fatalities in your country, this post is for you.

Ninety percent of the 1.3 million people killed annually in road fatalities occur in developing countries, according to the World Health Organization (source: Global Status on road safety 2009). With the increased demand for mobility in these regions, it’s unacceptable to build cars without incorporating proven vehicle safety features. Without a doubt, the airbag is a critical component for improved vehicle safety. Combined with seatbelts, airbags offer one of the most efficient life-saving systems when crashes occur.

And given the recent automotive industry dynamics in emerging countries, why not invest in automotive safety electronics for use in your own local markets? The answer to “why” comes easy, but the answer to “how” gets a bit more complicated.

An airbag is a complex system involving multiple components. Getting started with the design of an airbag electronic control units takes time and resources. An engineer must find the right microcontroller (MCU), the right mixed signal ASSP, the right acceleration sensors, and then he needs to make sure all of the devices work properly together. The engineer must define the right safety concept and write all of the software routines to get all the parts working together. The details go on and on … If you’ve researched the design of an airbag, then you’re probably aware of the many challenges.

This is why Freescale and the Bosch Group’s Automotive Electronics Division have partnered to provide an Airbag Reference Platform that contains the key elements to help you get started faster on the real development of your application.

The new airbag reference platform is based on chipsets from Freescale’s Qorivva 32-bit microcontroller family and Bosch’s Airbag ASSP family and works with sensors from both companies, including Freescale’s Xtrinsic sensors. It demonstrates how Freescale’s Qorivva MPC560xP MCU family, scalable 32-bit MCUs used for safety applications, works with Bosch’s CG147 Airbag ASSP family, which is a single, integrated airbag system IC that combines power supply, firing loops, sensor interfaces, and a safety controller. The reference platform comes with preloaded demonstration software. Here’s what it looks like:

Freescale Qorivva MPC560xP MCU family	Bosch CG1xx Airbag ASSP family
Scalable 32-bit MCU family for safety applications e200z0 Power Architecture® core @ 64 MHz Scalable Memory, up to 512 KB Flash LQFP Package	Scalable Airbag ASSP family Power supply for complete ECU Up to 4 satellite sensor interfaces (PSI5) Up to 12 firing loops integrated Up to 6 analog interfaces Safing Block + Watchdog
Works with both Freescale Xtrinsic sensors and Bosch sensors

SOURCE: Freescale Automobility Blog

Tags: airbag, transportation, cg1xx, freescale, power_architecture, mpc560xp, qorivva, xtrinsic, sp:freescale, automotive, bosch, microcontroller, auto