Side Mirror Sensor Layout for Continuous Trailer-Side Detection
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Solution Overview
Problem
Semi-trailer trucks face challenges in providing an uninterrupted and reliable field of view for autonomous driving due to vibrations, blind spots caused by trailers, and the need for precise object detection under varying road conditions.
Innovation Solution
A sensor assembly with strategically positioned cameras and sensors, including a side mirror assembly with multiple cameras and sensors like radar and lidar, mounted on the vehicle to provide an uninterrupted 180° field of view, and a rigid support structure to withstand vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple cameras are positioned on the side mirror assembly to expand field of view, then object detection coverage is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple cameras (first camera on side mirror, second camera on roof, third camera on A-pillar, fourth camera on rear) into a unified sensor assembly that functions as an integrated perception system. This merging approach achieves comprehensive 360-degree coverage while managing complexity through unified mounting structures and coordinated operation.
Solution Approach 2:
The patent transitions from traditional single-plane side mirror cameras to multi-dimensional sensor placement across vertical (roof, A-pillar) and horizontal (side mirror, rear) dimensions. This spatial distribution in multiple dimensions enables complete blind spot elimination while maintaining manageable individual component complexity.
2Reliability
If cameras are mounted on the roof and A-pillar to eliminate blind spots, then field of view continuity is improved, but manufacturing complexity increases
Solution Approach 1:
The patent segments the sensor system into modular camera units that can be independently mounted on different vehicle components (side mirror, roof, A-pillar, rear). Each camera is a self-contained module with its own mounting structure, allowing independent installation and replacement, thereby simplifying manufacturing despite the multi-location deployment.
3Measurement precision
If radar and lidar sensors are added to the side mirror assembly to enhance detection precision, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The side mirror assembly is designed as a universal platform that can accommodate multiple sensor types (cameras, radar, lidar) and configurations. This multi-functional design allows the same mounting structure to support various sensor combinations, achieving high detection precision without proportionally increasing structural complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures reliable and wide-ranging object detection, reducing blind spots and enhancing the performance of autonomous driving systems in semi-trailer trucks.
Implementation Method 1
The side mirror assembly further comprises at least one of a radar sensor and a lidar sensor
Implementation Method 2
The side mirror assembly further comprises at least one of a radar sensor and a lidar sensor
Data Source
AI summary
A sensor assembly for autonomous vehicles includes a side mirror assembly configured to mount to a vehicle. The side mirror assembly includes a first camera having a field of view in a direction opposite a direction of forward travel of the vehicle; a second camera having a field of view in the direction of forward travel of the vehicle; and a third camera having a field of view in a direction substantially perpendicular to the direction of forward travel of the vehicle. The first camera, the second camera, and the third camera are oriented to provide, in combination with a fourth camera configured to be mounted on a roof of the vehicle, an uninterrupted camera field of view from the direction of forward travel of the vehicle to a direction opposite the direction of forward travel of the vehicle.