As the core of autonomous vehicle technology, perception chips are essential for data processing and environmental sensing. The efficacy and reliability of these chips are strongly impacted by the various functional risk factors may confront in scenarios in the real world. This paper provide efficient preventive measures and an innovative method for addressing functional safety failures in perception chips across a variety of real-world scenarios. It systematically investigates typical failure scenarios in a variety of scenarios as well as offers a detailed explanation of the underlying difficulties. A range of novel functional safety testing techniques are introduced in the study, which builds on this basis and allows for quicker and more accurate fault processing. The study additionally explores recent developments and preventative methods to enhance the overall safety functionality of autonomous systems. The study conducts extensive simulation experiments and comparative analyses to show off the viability of the proposed approach, showcasing the notable improvements in terms of fault recognition rate and processing speed. Results from experiments support the method's significant advantages for enhancing the functionality in perception chips, leading to improved functional safety throughout the autonomous driving system.
KEYWORDS: System on a chip, Radar sensor technology, Radar signal processing, Radar, Autonomous driving, Detection and tracking algorithms, Automotive radar, Signal detection, Computing systems, Target detection
This paper presents an radar blockage recognition approach along with blindness prevention measures utilizing intelligent computing methods to address the challenges in radar chip-based autonomous driving systems. A process and algorithm are initially created for detection, enabling real-time and precise identification. The adaptive blockage performance controller and the automatic diagnosis and recovery strategy are then proposed as part of the adaptive blockage prevention strategy, which enables the system to quickly return to its normal operating state by intelligently adjusting parameters when the sensor blockage occurs. The conventional linear threshold methods are replaced with nonlinear machine learning to deal with complex performance variations, with the aim of lowering false positives and negatives through real-time optimization. A comparative experiment is conducted to show the effectiveness.
The evaluation indicator model of the scenario trigger mechanism is constructed and proposed in this paper. By analyzing the elements of the V2X early warning function scenario, five indicators, which includes time to collision, the headway, the safe distance, the lane crossing time, and post conflict vehicle entry time are employed for the comprehensive assessment. The result demonstrate the priority relationship among the total 27 scenarios. It could support to detect and identify corner traffic scenarios, to broadcast safety warnings, to improve the performance of driving assist functions.
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