Sensor Layout For Autonomous Vehicles

What is this patent about?

’783 is related to the field of autonomous vehicle technology, specifically addressing the challenge of achieving robust environmental perception. Existing autonomous systems often struggle with accurately and reliably interpreting their surroundings due to limitations in sensor placement and configuration, leading to potential safety hazards and suboptimal decision-making. The patent aims to overcome these limitations by proposing an optimized sensor layout that enhances the vehicle's ability to perceive its environment.

The underlying idea behind ’783 is to strategically position multiple cameras with varying focal lengths around an autonomous vehicle to create a comprehensive and redundant sensing system. By using cameras with different focal lengths, the system can capture both wide-angle views for situational awareness and narrow-angle views for detailed object recognition at a distance. This multi-focal approach allows the vehicle to effectively perceive objects at varying distances and scales, improving its overall perception capabilities.

The claims of ’783 focus on a system comprising a set of forward-facing cameras with different focal lengths, along with two backward-facing cameras having the same focal length. One of the forward-facing cameras shares the same focal length as the backward-facing cameras. The claims also specify that the focal length of the backward-facing cameras is no greater than the focal length of at least one of the forward-facing cameras. This configuration aims to provide a balanced view of the environment surrounding the vehicle.

In practice, the system would involve mounting multiple cameras on the vehicle, potentially on a roof rack or other suitable locations. The forward-facing cameras, with their varying focal lengths, would provide overlapping fields of view, ensuring that objects are captured by multiple cameras. The backward-facing cameras, with their identical focal lengths, would provide a consistent view of the area behind the vehicle. The data from these cameras would then be processed by an onboard computer to create a comprehensive model of the vehicle's surroundings.

This approach differentiates itself from prior solutions by combining multiple cameras with different focal lengths to achieve a more complete and robust perception system. While existing systems may use multiple cameras, they often lack the diversity in focal lengths necessary to effectively perceive objects at varying distances and scales. The redundancy provided by the overlapping fields of view also enhances the system's robustness to sensor failures or occlusions. The use of identical focal lengths for the backward-facing cameras simplifies processing while providing adequate rear coverage. The combination of these features results in a more reliable and accurate perception system for autonomous vehicles, especially large vehicles like semi-trailer trucks .