Vehicle Speed Threshold Control for Accurate Route Estimation
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Solution Overview
Problem
Vehicle sensors' detection performance varies with vehicle speed, leading to errors in object detection, white line recognition, and host vehicle position estimation due to factors like road surface irregularities and tire deflection, affecting autonomous driving accuracy.
Innovation Solution
A vehicle control device with a processor and memory that includes a sensor for acquiring environment information, a host vehicle position estimation unit, a surrounding environment storage unit, a vehicle-speed threshold determination unit, and a warning unit to adjust vehicle speed within optimal ranges for accurate sensor and position estimation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If vehicle speed is increased to improve productivity, then detection accuracy of vehicle sensors and host vehicle position estimation deteriorates
Solution Approach 1:
The system performs preliminary action by notifying the driver in advance when vehicle speed exceeds the threshold value before actual storage of surrounding environment information begins. This allows the driver to reduce speed proactively, ensuring accurate detection and position estimation during the storage process without compromising overall productivity.
Solution Approach 2:
The system implements feedback by continuously monitoring vehicle speed during the storage process and providing real-time notifications when the speed exceeds the predetermined threshold. This feedback mechanism enables dynamic adjustment of vehicle speed to maintain detection accuracy while managing productivity requirements.
2Measurement precision
If vehicle speed is reduced to improve detection accuracy, then productivity decreases
Solution Approach 1:
The system applies preliminary action by notifying the driver before storage begins when speed is excessive, allowing speed reduction to be completed before the storage process starts. This minimizes the impact on productivity while ensuring accurate detection during the actual storage operation.
Solution Approach 2:
The system dynamically adjusts operational parameters by setting different vehicle speed thresholds based on the storage status. During active storage, a lower speed threshold is enforced, while outside storage operations, normal speed limits apply. This dynamic approach balances detection accuracy requirements with productivity maintenance.
Data Source
AI summary
A vehicle control device includes a processor, a memory and a sensor that acquires surrounding environment information of the vehicle, a host vehicle position estimation unit that estimates the route of the vehicle, a surrounding environment storage unit that stores the surrounding environment information and the route estimated by the host vehicle position estimation unit in association with each other, a vehicle-speed threshold determination unit that sets a vehicle-speed threshold value when the surrounding environment storage unit stores the surrounding environment information and the route in association with each other, and determines whether or not a current vehicle speed exceeds the vehicle-speed threshold value when the surrounding environment storage unit stores the surrounding environment information and the route, and a warning unit that performs a notification of an excess of the vehicle speed when the vehicle-speed threshold determination unit determines that the vehicle speed exceeds the vehicle-speed threshold value.