Vehicle Speed Notifications for Legal Limits and Driver Setpoints
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Solution Overview
Problem
Existing vehicle speed notification systems fail to provide alerts at timings that align with a driver's intended speed settings, leading to inconsistent and potentially inappropriate notifications.
Innovation Solution
An electronic device that acquires both a first set speed based on road signs or map data and a second set speed input by the user, providing distinguishable notifications when the vehicle exceeds these speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If notification is provided only when vehicle speed exceeds the speed limit, then the notification timing aligns with legal requirements, but it does not reflect the driver's intended warning speed settings
Solution Approach 1:
The notification system is segmented into two distinct notification types: a first notification for exceeding the speed limit and a second notification for exceeding the driver-set warning speed. This segmentation allows each notification to serve its specific purpose independently, resolving the contradiction between legal compliance and driver preference by providing both types of notifications rather than choosing one over the other.
Solution Approach 2:
The system dynamically adjusts notification behavior based on the relationship between the speed limit and the driver-set warning speed. When the warning speed is lower than the speed limit, the system provides the second notification first, then the first notification. This dynamic adaptation to different driving scenarios and driver preferences resolves the contradiction by making the system flexible rather than fixed.
2Ease of operation
If a single notification threshold is used, then the system is simple to operate, but it cannot provide notifications at both the driver's preferred speed and the legal speed limit
Solution Approach 1:
The notification system performs multiple functions through a unified interface: it can notify at the speed limit, at the driver-set warning speed, or both. The control unit universally handles different notification scenarios (first notification, second notification, or both) based on the relationship between speed limit and warning speed, maintaining ease of operation while achieving multi-speed notification capability.
3Reliability
If notification timing is based solely on speed limit, then legal compliance is ensured, but driver-specific safety preferences are not accommodated
Solution Approach 1:
The system performs preliminary notification by providing the second notification at the driver-set warning speed before the vehicle reaches the speed limit. This preliminary action allows the driver to be warned in advance based on their safety preferences, enabling them to slow down before exceeding the speed limit, thus reducing safety risks while maintaining legal compliance.
Data Source
AI summary
An electronic device includes a first acquisition part that acquires a first set speed set on the basis of a speed limit which is (i) recognized on the basis of an image of a sign of a road on which a vehicle is located, captured by an imaging part or (ii) identified from map information of the road; a second acquisition part that acquires a second set speed set by a user of the vehicle; and a notification control part that causes a notification part to provide a first notification when a vehicle speed exceeds the first set speed, and causes the notification part to provide a second notification which is distinguishable from the first notification when the vehicle speed exceeds the second set speed.