It is vital that automotive critical electronic control systems, such as collision avoidance, adaptive cruise control, electric steering and braking, can demonstrate an adequate immunity to high intensity radiated fields (HIRF). The HIRF environment to which a vehicle and its electronic systems will be exposed comprises many different sources, such as high power broadcast transmitters, radars and also the vehicle's own onboard transmitters. This paper provides an overview of these HIRT threat enviromnents, the coupling mechanisms to vehicle electronic equipment and discusses HIRF transfer function measurements and HIRF immunity test techniques which may be applied verify the EM performance of these electronic systems. Whole vehicle transfer function tests can be undertaken on all types and sizes of vehicle, to rapidly assess whether the equipment sub assembly (ESA) qualification tests were applied at sufficient amplitude. These transfer function/coupling tests determine the relationship between the incident radiated field threat environment and both the resulting coupled stress onto the various critical ESA wiring bundles and also the field strength level at the location of the ESA. The transfer function tests include low level swept current (LLSC), low level direct drive (LLDD) and low level swept field (LLSF). Vehicle and ESA immunity tests using bulk current injection (BCI), radiated field susceptibility (RS) and direct current injection (DCI) are described. These methods have been successfully applied to aircraft for many years and there are many benefits for the assessment of systems in large vehicles.
HIRF hazard considerations for critical electronic automotive control systems
Gefährdungsuntersuchungen an kritischen, elektronischen Fahrzeugsystemen durch hochintensive Strahlungsfelder
2001
11 Seiten, 3 Bilder
Aufsatz (Konferenz)
Englisch
HIRF hazard considerations for critical electronic automotive control systems
British Library Conference Proceedings | 2001
|British Library Conference Proceedings | 1993
|British Library Conference Proceedings | 1993
|Making HIRF Certification Economical
British Library Conference Proceedings | 1995
|Analysis of Hirf Effects in Aircrafts
SAE Technical Papers | 2004
|