Electromagnetic Interference Effects on Motor Vehicle Electronic Control and Safety Devices. Volume I. Summary.

摘要

This report summarizes the analysis and measurement tasks accomplished for this phase of the Dot Road Vehicle EMC/EMI program and the contents of EMC Guidelines proposed for the design and maintenance phases of electronic safety and control systems. A computerized coupling analysis program was used to determine the effects of body shielding,aperture size,and cable lengths on signal coupling in the 100to 200MHz band between a simulated mobile radio emission and a modeled air-cushion restraint system cable as it might be used in a motor vehicle. A series of susceptibility tests were performed on an electronic speed control system and an anti-skid control module to determine functional upset levels of injected signals at critical circuit ports on these devices. The upset criteria were based on performance departures from normal,resulting from the injection of interfering signals. The injected signals were designed to represent levels and durations characteristic of those generated within the vehicle or coupled from external sources. A set of basic guidelines to promote EMC in the use of electronic control and safety devices in automobiles are presented. The applications and technological developments concerned with current automotive electronics are discussed. The research conducted by the automotive industry to explore the feasibility of a central processor or control system and potential problem areas are reviewed.