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Automotive


New filter ferrite bead designed for high current automotive applications


M


urata has launched its new BLM18DN_SH series of noise filter ferrite beads. The new devices are


specifically designed for automotive networks using Power over Coaxial (PoC) with high impedance, high frequencies and supporting large currents, up to 1400 mA. As vehicles become more complex and sophisticated and especially as a result of increased image sensing, data communication needs within vehicles have increased significantly. Multiple protocols exists including CAN, LIN, FlexRay and Ethernet and the wiring, along with the associated power cabling, has increased in weight to the point it is now an issue. The transition towards PoC is addressing this by transmitting data on a single coaxial cable that is also able to carry the power. However, systems such as Advanced Driver Assistance Systems (ADAS) and In-


Vehicle Infotainment (IVI) use a 1.5 GHz band GPS signal that creates noise that can significantly affect data transmission at 2.4 GHz. To resolve this, a high impedance noise filter that can carry large currents and remain effective into the GHz band is needed. Murata’s existing BLM18GG series supports the frequency range required but is limited to 200 mA making it unsuitable for PoC implementations. The new BLM18DN_SH series uses a


unique Murata developed internal electrode that limits the size to 1.6mm x 0.8mm (1608) while offering a maximum DC resistance of 0.12Ohm and maximum rated current of 1400mA while supporting frequencies at 1GHz. This is the first product to offer this performance in such a compact size. The four devices in the new series are ideally suited for designing the Bias Tee


circuits required for PoC implementation and applications which will need the capability of wide frequency coverage due to their performance, small size and ability to operate at temperatures up to 125°C.


The devices are AEC-Q200 compliant, making system approvals easier.


murata.com


5StarS begins consultation with automotive industry on new vehicle cybersecurity rating scheme T


he 5StarS consortium has released a consultation paper to seek feedback on a new assurance framework to assess the cybersecurity of vehicles.


Feedback is sought from automotive manufacturers, government and insurers to ensure this revolutionary framework is readily adopted when finalised this summer. With the rise of new and ingenious technology becoming a common component of new vehicles – from in-car entertainment, to connectivity that will boot up our homes as we drive there – manufacturers must have proven, built-in safeguards and resilience against the emerging threat of cyber attacks. Furthermore, the arrival of Connected Autonomous Vehicles (CAVs) and Advanced Driver Assistance Systems (ADAS) is also accelerating the debate around technology’s role, and impact on, road safety. Continuing to build consumers’ trust in both vehicle


safety and cybersecurity is therefore critical. Thus, the 5StarS mission is to develop an assurance framework that underpins future assessments of the cybersecurity capabilities of new vehicles and their resilience to attacks. Funded by Innovate UK, 5StarS is a consortium comprised of automotive industry experts: HORIBA MIRA, Ricardo, Roke, Thatcham Research and Axillium Research. The 5StarS assurance framework outlined in the consultation paper will enable manufacturers to gain


assurance in their products, use resilience as a market differentiator and establish meaningful ways of communicating cybersecurity risk to consumers. The paper provides a roadmap to increasing assurance,


which starts by meeting the requirements of the emerging regulations and standards such as ISO/SAE 21434, while introducing independent vehicle vulnerability assessments. This allows the framework to be adapted to cope with continually changing threats. The paper also proposes a consumer-facing risk rating system to reassure consumers about their choice of vehicle. Paul Wooderson, cybersecurity principal engineer at


HORIBA MIRA and 5StarS project lead, says: “It’s important we address cybersecurity assurance for connected and autonomous vehicles, not only for vehicle manufacturers but for the automotive industry as a whole, as well as insurers and consumers. The easy-to- understand rating system is essential for customers’ peace of mind, as is demonstrating that appropriate security measures are in place. We are now inviting feedback on this paper, which we will use to further enhance the 5StarS framework, providing a positive solution for trusted and resilient mobility.”


5starsproject.com


24 May 2019


Components in Electronics


www.cieonline.co.uk


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