Redundant Camera Switching for Continuous Vehicle Cruise Control
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Solution Overview
Problem
Existing vehicle control systems face challenges in maintaining continuous cruise control when there is an abnormality in the camera signal system, as they rely on a single set of cameras for environmental monitoring, leading to disruptions in automated driving.
Innovation Solution
A vehicle control system with multiple camera combinations (first and second cameras) and corresponding radar systems, allowing for automatic switching between different operational modes to ensure continuous cruise control even if one signal system experiences an abnormality, by using outputs from either the first or second cameras for monitoring the environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single set of cameras is used for environmental monitoring, then the device complexity is reduced, but the reliability of cruise control is compromised when abnormality occurs
Solution Approach 1:
The camera system is segmented into multiple independent signal systems (first signal system with first cameras, second signal system with second cameras). Each signal system can independently perform environmental monitoring, allowing the vehicle to switch between systems when one experiences abnormality, thereby maintaining cruise control continuity.
Solution Approach 2:
The system prepares backup camera systems in advance before any abnormality occurs. The control unit is pre-programmed to detect abnormalities and automatically switch to the other signal system, cushioning against potential disruptions to cruise control operation.
2Reliability
If multiple camera combinations are provided, then the reliability of cruise control is improved through redundancy, but the device complexity increases
Solution Approach 1:
The complex signal system is segmented into distinct, modular first and second signal systems, each with its own cameras and processing path. This modular segmentation makes the overall complexity manageable while providing the necessary redundancy for reliable operation.
Solution Approach 2:
The system changes the operational parameter of the camera system from single-mode to multi-mode operation. The control unit dynamically adjusts which signal system is active based on detected abnormalities, changing the system's operational state to maintain reliability without permanently increasing complexity.
3Reliability
If automatic switching between operational modes is implemented, then the continuity of cruise control is maintained, but the control system complexity increases
Solution Approach 1:
The control unit is pre-configured with abnormality detection and automatic switching capabilities before operation. This beforehand preparation allows seamless transition between signal systems without requiring complex real-time decision-making, reducing the actual control complexity during operation.
Solution Approach 2:
The system implements feedback through abnormality detection by the control unit, which monitors the status of both signal systems and automatically triggers switching when needed. This closed-loop feedback mechanism maintains cruise control continuity with relatively simple control logic.
Data Source
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AI summary
A plurality of first cameras (11a) are provided in a vehicle (100) so as to surround the vehicle (100). A plurality of second cameras (11b) are provided in the vehicle (100) so as to surround the vehicle (100). A control unit (20) performs a first operation of outputting a control signal for cruise control of the vehicle (100) based on both outputs from the plurality of the first cameras (11a) and outputs from the plurality of the second cameras (11b), a second operation of outputting the control signal based on the outputs from the plurality of the first cameras (11a), and a third operation of outputting the control signal based on the outputs from the plurality of the second cameras (11b).