Risk-based EMC System Analysis Platform of Automotive Environments

2022 ESA Workshop on Aerospace EMC (Aerospace EMC)

Leferink

2022

Self Cite

Due to the increasingly implemented electronic devices in modern applications, the electromagnetic environments become more and more complex. Therefore, there is need for such environments to be evaluated, so that potential electromagnetic compatibility issues can be identified and solved. So far, standardized methods have been using conventional measuring techniques such as e.g., superheterodyne receivers, oscilloscopes, etc. These types of devices depict the output data measured over frequency or time, determining the electromagnetic behavior of a system under test in a single domain. Although they are suitable for laboratory tests, a proper description of the real intended electromagnetic environment, where the device would be placed, requires a more careful analysis, especially in order to implement the risk-based EMC approach. Experiments performed in a vibrating intrinsic reverberation chamber representing an example harsh environment, using four different measuring methods show the receiving capabilities of each for better understanding on how an electromagnetic environment could be characterized.

Section: Introductionmentioning

confidence: 99%

Evaluation of EM Vehicle Environment Measurement Methods for Risk-Based EMC Analysis

2022 ESA Workshop on Aerospace EMC (Aerospace EMC)

Leferink

2022

Self Cite

“…It accounts for unpredicted parameters as well as it deals with real conditions. This approach has been successfully applied in maritime [12], hospital [13] as well as automotive [14] environments.…”

Section: Introductionmentioning

confidence: 99%

“…In [14], a 3-point model incorporating known and unknown sources is introduced. Via a simple case, the concept of such a macro-scaled model in a harsh EME, characterized by multipath coupling, variable distances to multiple sources of unknown radiation properties, is presented.…”

Section: Introductionmentioning

confidence: 99%

“…investigation of an unknown source (or EME overall) coupling onto a scooter (acting as the victim) is made based on the 3-point model and macro-parameters introduced in [14]. Scooters are systems which have already proven to be susceptible to EMI as shown in [21].…”

Section: Introductionmentioning

confidence: 99%

“…To achieve that, though, the crucial induced voltages as well as currents at the components of the SUT due to the coupled-onto-the-victim field shall be determined. A way to estimate these values is to calculate them according to specific macro-parameters of the SUT following the risk-based EMC approach as proposed in [14]. Another approach to pre-compliance immunity assessment is based on performing numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Study of Random Field Coupling onto a Scooter following the Risk-based EMC Approach

Struzhko

2022 International Symposium on Electromagnetic Compatibility – EMC Europe

et al. 2022

Self Cite

The new continuously emerging technologies, over the last years, increase the complexity of electromagnetic environments as more electronic devices are implemented in modern applications such as e.g., vehicles, aircrafts, etc. The already applied electromagnetic compatibility standards, however, struggle to keep up with these new age technologies and do not always account for characteristics met in real dynamic environments as required by the EMC directive. Therefore, potential harmful electromagnetic interference sources cannot always be identified and overcome. For detection of such threats, deeper investigation towards actual environments and existing cases is necessary. Risk-based EMC analysis can help distinguish critical cases in a common real electromagnetic environment as it deviates from the fixed standardized conditions. In this paper, a real case of a scooter, acting as a victim is represented via a simple model and macroscaled parameters to identify and determine significant induced values caused by a coupling of an unknown source. Experiments as well as simulations validate the macro-parameter concept of the applied case and allow to perform a simplified study of its behavior when exposed to a complex electromagnetic environment without the necessity to run expensive and lengthy measurements. Even though the expected precision of such a test is expected to be relatively low, it is sufficient to be incorporated in the macro-parameter-based model focused on rough-butusable EMI estimations within a complex environment rather than exact-but-wrong solutions obtained in a perfectly clean laboratory setup.

Board Level Shielding Effectiveness Measurements using the dual VIRC

2021 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC)

Schipper

et al. 2021

This paper presents shielding effectiveness measurements of board level shielding materials using the dual vibrating intrinsic reverberation chamber. Various sized board level shielding materials mounted on specifically designed printed circuit boards are examined in order to evaluate the shielding performance in each case. Experiments presented in this paper aim to investigate the effect of appropriate mounting of the test samples before performing a shielding effectiveness measurement, as well as to compare the shielding mechanisms of these kinds of materials. Additionally, based on the obtained measurement data, a discussion on the definition of shielding effectiveness and the effect of the aperture on the coupling of the two cavities of the dual VIRC is briefly conducted.