Hyundai Mobis Develops New Brake System For Autonomous Cars

Hyundai Mobis has developed a new safety brake system optimized for fully autonomous driving that is level 4 or higher. The company announced that it had succeeded in developing the 'redundancy brake system' in which the emergency brake system is activated by itself even if the brakes do not work normally due to failure of electrical devices or external shock.

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Redundancy, which means 'dualization or extra,' is a technology directly connected to the safety of passengers. As autonomous driving evolves to a higher level, the intervention of the driver decreases, and it becomes essential to secure the precision safety technology in preparation for an emergency situation. Accordingly, active efforts to develop redundancy technologies in key automotive parts including the brake system are being made.

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The redundancy brake system, developed by Hyundai Mobis, is rated as the state-of-the-art safety technology to proactively prepare for level-4 or higher fully autonomous driving. Autonomous driving is divided into a total of six levels (0-5), and autonomous driving cars must be able to handle emergency situations by themselves at levels 4 and 5, the last level. If the redundancy brake system of Hyundai Mobis is applied, the auxiliary brake system is activated in an emergency situation.

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The redundancy brake system consists of two electronic brake systems, the ECU, which is the brain for controlling them, and the software control platform. At normal times, the two controllers are connected to each other and exchange data, but if the main brake system is not working normally, the controller detects it, and orders the auxiliary brake system to start working. The core of this technology is to develop the software platform to help the control make a correct judgment at this time.