Vehicle Travel Control Device Radar Axis Deviation Detection
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Solution Overview
Problem
Conventional vehicle travel control systems risk performing travel control in a state where axis deviation of the radar device has occurred, such as during collisions or when objects hit the vehicle, leading to potential failures.
Innovation Solution
A travel control device that restricts or prohibits travel control based on detection results from a radar device, including a determining unit to assess axis deviation and a restricting unit that prevents travel control execution until axis deviation determination is complete, using a detection device to monitor the activation switch and send restriction information to the travel control system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If travel control is allowed to execute based on radar detection results, then the productivity of the vehicle operation is improved, but the reliability deteriorates because axis deviation may occur undetected
Solution Approach 1:
The system performs preliminary axis deviation determination through multiple detection means (radar detection result determination, operation history determination, and detection device determination) before allowing travel control execution. This preliminary checking mechanism ensures that the radar device is functioning correctly and no axis deviation has occurred, thereby preventing unreliable travel control while maintaining operational efficiency
2Reliability
If axis deviation determination is performed using multiple detection means, then the reliability of travel control is improved, but the device complexity increases
Solution Approach 1:
The determination device performs multiple functions using a single integrated system: it detects axis deviation through radar detection results, analyzes operation history, and processes detection device signals. This multi-functional approach achieves high reliability in axis deviation determination without proportionally increasing device complexity, as the same determination device handles all three detection means
3Reliability
If travel control is restricted until axis deviation determination is completed, then the reliability is improved, but the productivity deteriorates due to delayed travel control execution
Solution Approach 1:
The system performs axis deviation determination preliminarily and in parallel before travel control execution is needed. By completing the determination process ahead of time and restricting travel control only until determination is complete, the system ensures reliability without causing unnecessary delays in normal operation
Solution Approach 2:
When the determination device determines that no axis deviation has occurred, the system quickly transitions from restriction to normal travel control execution. This rapid transition minimizes the time travel control is restricted, thereby reducing the impact on productivity while maintaining safety
Data Source
AI summary
Travel control of vehicle is performed in a state where the axis deviation of radar device has occurred, is avoided. A travel control restriction-use ECU is for restricting or prohibiting execution of travel control of vehicle based on detection result obtained by radar device, travel control restriction-use ECU includes a determining unit configured to determine whether an axis deviation has occurred in the radar device based on detection result obtained by radar device, when detection device, which is configured to detect switch on operation and switch off operation with respect to activation switch of vehicle, detects switch on operation with respect to activation switch of vehicle; and restricting unit configured to restrict or prohibit execution of travel control, during period from when switch on operation is performed with respect to activation switch of vehicle to when determination of whether axis deviation has occurred is completed.