Redundant Vehicle Sensor Layout for Continuous Environmental Sensing
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Solution Overview
Problem
Current autonomous driving technologies have limited vehicle perception and environmental adaptability, leading to unreliable sensing of environmental information, which can compromise driving safety and reliability.
Innovation Solution
A vehicle is equipped with redundant sensor subsystems, including a master, slave, and backup system, each comprising different types of sensors with overlapping sensing ranges to ensure continuous environmental information acquisition and adaptability, even if one subsystem fails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single sensor subsystem is used for environmental sensing, then the device complexity is low, but the reliability of sensing environmental information deteriorates
Solution Approach 1:
The sensor system is divided into multiple independent sensor subsystems (first sensor subsystem, second sensor subsystem, third sensor subsystem), each capable of acquiring environmental information. This segmentation allows the system to maintain functionality even if one subsystem fails, thereby improving reliability without requiring a single complex subsystem.
Solution Approach 2:
Each sensor subsystem is configured with specific sensor types and sensing ranges tailored to particular environmental conditions or regions. For example, different subsystems may use different sensor types (cameras, LIDAR, radar) optimized for specific detection tasks, allowing each local component to have specialized quality that contributes to overall system reliability.
2Reliability
If multiple sensor subsystems with overlapping sensing ranges are deployed, then the reliability of environmental information acquisition is improved, but the device complexity increases
Solution Approach 1:
The system segments sensing coverage into multiple subsystems with defined sensing ranges. By ensuring that adjacent subsystems have overlapping coverage areas, the system guarantees continuous environmental monitoring while maintaining manageable complexity through clear segmentation boundaries.
Solution Approach 2:
The overlapping sensing ranges between adjacent sensor subsystems create a buffer zone that ensures continuous coverage. This prior cushioning approach guarantees that if one subsystem fails or has limited coverage, the overlapping region provides redundant sensing capability, improving reliability while the structured overlap pattern keeps configuration complexity manageable.
3Measurement precision
If sensors are densely distributed to cover all areas, then the measurement precision of environmental information is improved, but the use of energy increases
Solution Approach 1:
Different sensor subsystems use different sensor types and densities optimized for specific local requirements. Areas requiring higher measurement precision use denser sensor arrangements, while areas with lower requirements use sparser arrangements, thereby reducing overall energy consumption while maintaining necessary precision where needed.
Solution Approach 2:
The system implements partial redundancy through overlapping sensing ranges rather than complete dense coverage everywhere. The overlap provides sufficient measurement precision for critical areas while avoiding the excessive energy consumption that would result from uniform dense sensor distribution across the entire environment.
Data Source
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AI summary
The present disclosure relates to a vehicle having sensor redundancy. The vehicle includes a sensor system including a first sensor subsystem configured for acquiring environmental information around the vehicle; a second sensor subsystem configured for acquiring environmental information around the vehicle; a computing system configured for sending a control instruction generated based on one of the first sensor subsystem and the second sensor subsystem to a control system according to a state of at least one of the computing system and the sensor system; a control system configured for changing at least one of a direction of travel and a speed of the vehicle based on the control instruction received from the computing system.