Vehicle Deceleration Alerts Under Regional Horn and Hazard Rules
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Solution Overview
Problem
Existing autonomous driving systems face challenges in appropriately activating vehicle horns and hazard warning lamps during deceleration control due to regional laws and potential interference with brake lamp effects, leading to illegal operations.
Innovation Solution
A vehicle control interface box (VCIB) receives commands from an autonomous driving kit (ADK) to determine whether to activate the horn or hazard warning lamp during deceleration control, considering the travel region and conditions, with options for operation patterns and end timings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the horn is activated during deceleration control to alert those in the vicinity, then the safety and attention-grabbing effect is improved, but it may violate regional laws prohibiting horn usage on freeways
Solution Approach 1:
The system dynamically adjusts horn activation based on real-time detection of regional laws and environmental conditions. The ECU determines whether to activate the horn by considering multiple factors including geographic location, road type, and local regulations, transforming a static unconditional activation into a dynamic conditional decision-making process that adapts to varying operational contexts
Solution Approach 2:
The system changes the operational parameters of the horn activation by introducing conditional thresholds and decision criteria. Instead of a fixed activation rule, the system modifies the activation parameters based on detected regional characteristics and environmental conditions, allowing the same hardware to operate differently across various regions and situations
2Reliability
If the hazard warning lamp is activated during deceleration control to alert those in the vicinity, then the safety and visibility effect is improved, but it may hinder brake lamp effects and potentially violate regional laws
Solution Approach 1:
The system dynamically controls hazard warning lamp activation based on real-time assessment of driving conditions, vehicle state, and environmental factors. The ECU determines optimal activation timing and duration by continuously monitoring brake lamp operation status, road conditions, and deceleration characteristics, adjusting hazard lamp parameters to complement rather than interfere with brake lamp effects
Solution Approach 2:
The system employs periodic or intermittent activation of the hazard warning lamp rather than continuous operation. By controlling the timing and duration of hazard lamp activation in coordination with brake lamp cycles and deceleration phases, the system maintains safety alert effectiveness while preventing visual interference and potential legal violations
3Ease of operation
If unconditional horn or hazard warning lamp activation is implemented during deceleration control, then the safety alert function is simplified, but it may lead to illegal operations in certain regions
Solution Approach 1:
The system performs self-assessment and self-adjustment by automatically detecting regional characteristics, road types, and environmental conditions. The ECU autonomously determines appropriate alert device activation without requiring manual driver input or complex external configuration, making the system adaptable to different regions while maintaining operational simplicity for the user
Solution Approach 2:
The system pre-loads and stores regional law data, road type information, and environmental condition parameters before actual operation. By preparing decision-making criteria and thresholds in advance based on detected location and conditions, the system enables rapid compliant decision-making during deceleration events without adding operational complexity
Data Source
AI summary
VP is configured to perform deceleration control when an anomaly occurs in communication between VCIB and ADK. VCIB is configured to receive a command from ADK whether to perform horn control that activates the horn of VP when the deceleration control is executed, or hazard warning lamp control that activates the hazard warning lamp of VP when the deceleration control is executed.