Vehicle Speed Limit Setting with Priority-Based Display
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Solution Overview
Problem
Conventional vehicle control systems face difficulties in determining the appropriate upper speed limit when multiple speed limit values are displayed, requiring occupants to manually select or switch between them, leading to increased operational complexity and potential errors.
Innovation Solution
A vehicle control system that includes an imaging device, a limiter device, and a setting device to extract speed limit values from image information, derive display priority conditions, and display these values in descending order of priority, allowing occupants to easily select the appropriate speed limit with fewer operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple speed limit values are extracted and displayed sequentially for selection, then the occupant can accurately select the appropriate speed limit value, but the number of display switching operations increases
Solution Approach 1:
The system performs preliminary actions by extracting multiple speed limit values in advance and calculating their display priorities before the occupant needs to select. This allows the values to be pre-organized and presented in the optimal order, reducing the number of switching operations required while ensuring accurate selection.
Solution Approach 2:
The system changes the parameter of display priority based on multiple conditions (vehicle type, road type, driving lane, traveling hours, weather). By dynamically adjusting display priority according to current vehicle conditions, the most relevant speed limit values are presented first, minimizing switching operations while maintaining selection accuracy.
2Reliability
If the occupant manually inputs the speed limit value, then the upper speed limit can be set without error, but time and operational complexity increase
Solution Approach 1:
Instead of requiring manual input, the system extracts speed limit values by copying/recognition from image information captured by the imaging device. This automated extraction process eliminates manual typing while maintaining accuracy through the display priority system that presents the most relevant values first for confirmation.
Solution Approach 2:
The system performs self-service by automatically extracting, analyzing, and prioritizing speed limit values based on current vehicle conditions. The occupant only needs to review and confirm the pre-processed information, significantly reducing time and operational complexity while maintaining reliability.
3Productivity
If automatic speed limit setting is implemented, then the upper speed limit is set without manual input, but the set value may differ from the intended limit
Solution Approach 1:
The system implements feedback by displaying the extracted speed limit values in priority order and receiving confirmation or correction from the occupant. This feedback loop ensures that the automatically set speed limit matches the occupant's intent, combining the speed of automation with the reliability of human verification.
Solution Approach 2:
The system performs preliminary analysis of multiple speed limit values and calculates display priorities before presenting them to the occupant. This preliminary processing enables fast automatic setting while allowing the occupant to review and correct if necessary, ensuring both productivity and reliability.
Data Source
AI summary
A vehicle control system includes a limiter device, and a setting device to set an upper speed limit on the limiter device, based on speed limit values extracted from image information. The setting device includes a derivation unit to derive a condition to raise display priority for each speed limit value; an obtainment unit to obtain determination information for determining whether the condition is satisfied; a calculation unit to raise the display priority of the speed limit value that corresponds to the condition determined satisfied with the determination information, among the speed limit values extracted from the image information; a display control unit to display the speed limit values in descending order of the display priority; and a setting unit configured to set the upper speed limit on the limiter device, based on one of the displayed speed limit values, selected by an occupant of the vehicle.