Airbag Systems - Their Permanent Monitoring and Its Meaning to the User 901138
Safety-critical electronic control units within automotive applications, such as four-wheel-drive, anti-lock braking systems, and airbag systems, are all characterized by sophisticated internal and external monitoring circuitry. This paper is focused on the specific needs of monitoring circuitry in electronic control units (ECU) for airbag systems.
After a short introduction, the main electrical components of an airbag system and their interconnections are described. In the following sections, the monitoring of components external to the ECU is discussed, such as the monitoring of the battery supply voltage, the warning lamp, the selection inputs, the firing loops, and external crash sensors. For each case, requirements are stated and practical solutions for the realization of the monitoring functions are provided. Furthermore, the pros and cons of simple and sophisticated solutions are compared.
Citation: Härtl, A., Vogt, R., and Huber, A., "Airbag Systems - Their Permanent Monitoring and Its Meaning to the User," SAE Technical Paper 901138, 1990, https://doi.org/10.4271/901138. Download Citation
Author(s):
Alfons Härtl, Richard Vogt, Anton S. Huber
Affiliated:
Siemens Automotive
Pages: 7
Event:
Convergence International Congress & Exposition On Transportation Electronics
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Vehicle Electronics in the 90S-Proceedings of the International Congress on Transportation Electronics-P-233, SAE Transactions Journal of Passenger Cars-V99-6
Related Topics:
Airbag systems
Electronic control units
Anti-lock braking
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