Lane Change Decision Aid System With Multi-Modal Warning And Active Control
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Solution Overview
Problem
Current lane change decision aid systems (LCDAS) do not provide automatic actions to prevent collisions and lack comprehensive warning mechanisms for drivers changing lanes, relying solely on visual and auditory alerts without integrating haptic feedback or active control measures.
Innovation Solution
An LCDAS apparatus and method that includes a sensing unit for detecting target vehicles in adjacent, rear, and forward zones, a determination unit for activating and evaluating warning conditions, and a control unit for issuing visual, auditory, and haptic warnings, as well as controlling vehicle speed and steering to prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LCDAS provides only visual and auditory warnings, then the system is simple and easy to implement, but the warning effectiveness and driver safety are insufficient
Solution Approach 1:
The warning system is segmented into multiple independent warning channels: visual warnings through display screens, auditory warnings through speakers, and haptic warnings through vibration motors. Each channel can operate independently or in combination, allowing the system to provide comprehensive warnings while maintaining modular simplicity in implementation.
Solution Approach 2:
The patent combines multiple warning modalities (visual, auditory, haptic) into a unified LCDAS system. By merging these different types of warnings, the system overcomes the limitations of single-channel warnings and provides more effective safety alerts to drivers, resolving the contradiction between simplicity and effectiveness.
2Reliability
If LCDAS does not provide automatic control actions, then the system remains simple and does not interfere with driver operation, but the ability to prevent collisions is limited
Solution Approach 1:
The system implements dynamic automation levels that can adjust based on situation severity. In normal conditions, the system provides passive warnings without automatic control. However, when collision risk exceeds thresholds, the system dynamically activates automatic control functions including steering intervention and braking assistance, allowing the extent of automation to adapt to the urgency of the situation.
Solution Approach 2:
The system changes operational parameters based on risk assessment. When the situation transitions from low-risk to high-risk, the system changes from a warning-only mode to an active control mode, adjusting parameters such as steering torque magnitude, braking force, and response time to appropriately match the collision prevention needs.
3Reliability
If LCDAS activates at all times, then the system provides continuous safety monitoring, but energy consumption increases and driver annoyance may occur
Solution Approach 1:
Instead of continuous activation, the system employs periodic sensing and evaluation cycles. The sensing unit periodically scans for target vehicles, and the determination unit periodically evaluates activation conditions. This periodic operation maintains safety monitoring capability while significantly reducing energy consumption compared to continuous operation.
Solution Approach 2:
The system performs preliminary sensing and evaluation to determine whether activation is necessary before fully activating warning or control functions. By preliminarily assessing conditions such as presence of target vehicles and relative speeds, the system can avoid unnecessary activation, thereby reducing energy consumption while maintaining continuous safety monitoring capability.
Data Source
AI summary
An apparatus for implementing a lane change decision aid system (LCDAS) includes: a sensing unit sensing whether there is a target vehicle in adjacent zones, a rear zone, or a forward zone of a subject vehicle; a determination unit determining an activation condition for determining whether an LCDAS function is active/inactive and a warning condition for determining whether a warning of the LCDAS function is issued/un-issued, based on the sensing of the sensing unit; a warning unit issuing the warning to a driver based on the determination of the determination unit; and a control unit controlling the sensing unit, the determination unit, and the warning unit.