Autonomous Braking Control Using Camera-Radar Threat Fusion
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Solution Overview
Problem
Current vehicle vision systems lack an effective method to accurately detect and assess potential collision threats from multiple vehicles ahead, leading to inefficiencies in autonomous emergency braking systems.
Innovation Solution
A vehicle vision system that combines camera and radar sensor data using an electronic control unit (ECU) to determine threat levels and generate braking commands, incorporating image processing and sensor fusion algorithms to enhance object detection and collision avoidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If camera and radar sensor data are fused to improve collision detection accuracy, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent combines camera and radar sensor data processing into a unified ECU with integrated electronic circuitry. The ECU fuses image data from the camera with sensor data from the radar to determine threat levels and generate braking commands, merging multiple sensing functions into a single processing unit to improve collision detection accuracy while managing system complexity.
2Reliability
If multiple sensors and processing units are integrated to enhance autonomous braking accuracy, then reliability is improved, but device complexity increases
Solution Approach 1:
The ECU is designed as a multi-functional processing unit that performs multiple tasks: processing image data from the camera, processing sensor data from the radar, determining presence of other vehicles, fusing data from multiple sources, calculating threat levels, and generating braking commands. This universal processor consolidates multiple specialized functions into a single device, improving reliability through integrated processing while avoiding the complexity of multiple separate control units.
Data Source
AI summary
A vehicular vision system includes a camera and a radar sensor disposed at the equipped vehicle. The system includes an electronic control unit (ECU) and, as the equipped vehicle travels along a road, the ECU, via processing of image data and processing of sensor data, determines other vehicles present on the road ahead of the equipped vehicle. The ECU, responsive to determining the presence of a plurality of other vehicles present on the road, fuses the image data captured by the camera and the sensor data captured by the radar sensor. The ECU, based on the fused data, determines a threat level for each vehicle of the plurality of other vehicles and, when the threat level for one or more vehicles of the plurality of other vehicles exceeds a threshold value, generates a braking command. The ECU transmits the braking command to a braking system of the equipped vehicle.