Vehicle Passing Control via Oncoming Deceleration Feedback
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Solution Overview
Problem
Existing driving support systems for vehicles do not adequately address changes in conditions after passing a preceding vehicle has started, potentially leading to unsafe situations due to lack of attention to surrounding environment changes during the passing process.
Innovation Solution
A driving support apparatus that includes a passing environment monitoring module to assess changes in the travel environment and a passing execution/interruption determination module, which determines whether to continue or interrupt the passing based on the deceleration change amount of oncoming vehicles and their positional and speed relationships with surrounding vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If passing control is executed based on pre-determined conditions, then automatic passing can be performed without frightening drivers, but the system cannot respond to changes in surrounding conditions after passing starts
Solution Approach 1:
The system continuously monitors the traveling environment during passing execution and feeds back this information to the passing execution/interruption determination module. This feedback mechanism enables the system to detect changes in surrounding conditions (such as new obstacles or traffic signals) and adjust the passing control accordingly, resolving the contradiction between automated control and adaptability to changing conditions.
Solution Approach 2:
The passing control system transitions from a static pre-determined approach to a dynamic adaptive approach. The passing execution/interruption determination module dynamically evaluates whether to continue or interrupt passing based on real-time environmental changes, making the system both automated and adaptable to varying conditions during the passing maneuver.
2Productivity
If the system determines passing is possible in advance and executes passing control, then passing efficiency is improved, but safety cannot be ensured when unexpected conditions arise during passing
Solution Approach 1:
The system performs preliminary determination of passing feasibility before executing the passing maneuver, which improves passing efficiency by avoiding unnecessary attempts. Simultaneously, it maintains safety by continuing to monitor environmental conditions during execution and having the capability to interrupt passing if unsafe conditions arise, thus resolving the contradiction between efficiency and safety.
Solution Approach 2:
The feedback mechanism continuously monitors environmental conditions during passing execution and provides real-time information to the determination module. This enables the system to maintain high passing efficiency through pre-determined control while ensuring safety by detecting and responding to unexpected conditions that arise during the maneuver.
3Reliability
If the system monitors changes in travel environment during passing, then safety can be maintained, but the complexity of the control system increases
Solution Approach 1:
The passing environment monitoring module performs multiple functions: detecting obstacles, monitoring traffic signals, and assessing overall environmental safety. By consolidating these monitoring functions into a single multi-functional module, the system achieves comprehensive safety monitoring without proportionally increasing system complexity, thus resolving the contradiction between reliability and device complexity.
Solution Approach 2:
The system merges the monitoring function and the determination function into an integrated control architecture. The passing environment monitoring module and passing execution/interruption determination module work as a unified system, sharing data and coordination, which reduces overall system complexity while maintaining comprehensive safety monitoring capabilities.
Data Source
AI summary
When a vehicle equipped with a driving support apparatus moves from an original traveling lane into a lane for passing in order to pass a preceding vehicle and an oncoming vehicle appears in the lane for passing, the safe passing of the preceding vehicle is determined to be impossible and the passing is interrupted even when the oncoming vehicle decelerates, in the case where a deceleration change amount of the oncoming vehicle is smaller than a threshold. On the other hand, when the deceleration change amount of the oncoming vehicle is equal to or greater than the threshold, whereby safety with respect to surrounding vehicles can be confirmed, and it is determined the vehicle can be safely returned in front of the preceding vehicle, the passing of the preceding vehicle is performed.