Redundant Vehicle Sensor Control With Shared Backup Functions
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Solution Overview
Problem
Existing vehicle control systems face challenges in reducing the number of components required for redundant structures, which increases weight, installation space, and power consumption, especially when autonomous driving control devices malfunction.
Innovation Solution
A vehicle control system design that utilizes a first device and a second device with equivalent functionality, connected in a communicable manner to both driving assistance and autonomous driving control sections, allowing either device to act as a backup in case of an abnormality, and using a main power source and auxiliary power source to supply power to different components, with the main power source having a larger capacity to reduce the size of the auxiliary power source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If redundant structures are provided for autonomous driving control devices, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent makes sensors serve multiple functions: they are used for both driving assistance control and autonomous driving control. The first sensor (e.g., stereo camera) and second sensor (e.g., forward LIDAR) can both perform forward monitoring, and either can back up the other when abnormalities occur, eliminating the need for separate redundant structures for each control mode.
2Reliability
If redundant structures are provided for autonomous driving control devices, then reliability is improved, but weight increases
Solution Approach 1:
The patent makes sensors serve multiple functions: they are used for both driving assistance control and autonomous driving control. The first sensor (e.g., stereo camera) and second sensor (e.g., forward LIDAR) can both perform forward monitoring, and either can back up the other when abnormalities occur, eliminating the need for separate redundant structures for each control mode.
3Reliability
If redundant structures are provided for autonomous driving control devices, then reliability is improved, but installation space increases
Solution Approach 1:
The patent makes sensors serve multiple functions: they are used for both driving assistance control and autonomous driving control. The first sensor (e.g., stereo camera) and second sensor (e.g., forward LIDAR) can both perform forward monitoring, and either can back up the other when abnormalities occur, eliminating the need for separate redundant structures for each control mode.
4Reliability
If redundant structures are provided for autonomous driving control devices, then reliability is improved, but power consumption increases
Solution Approach 1:
The patent makes sensors serve multiple functions: they are used for both driving assistance control and autonomous driving control. The first sensor (e.g., stereo camera) and second sensor (e.g., forward LIDAR) can both perform forward monitoring, and either can back up the other when abnormalities occur, eliminating the need for separate redundant structures for each control mode.
Data Source
AI summary
A vehicle control system includes a memory, a processor connected to the memory, and a functional section. The functional section is configured by a first device and a second device having equivalent functionality to each other, and the functional section is connected in a communicable manner to the processor which serves as a driving assistance control section configured to perform driving assistance including at least braking control of a vehicle, and services as an autonomous driving control section configured to perform autonomous driving of the vehicle. The processor is configured to use the first device at least during execution of driving assistance of the vehicle, and to use the second device at least during execution of autonomous driving of the vehicle.