Drive Assist Arbitration for Conflicting Control Modes
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Solution Overview
Problem
Existing driving assistance systems face issues when multiple types of assistance, such as acceleration and deceleration, are performed simultaneously or alternately, leading to driver discomfort due to interference between conflicting assistance modes.
Innovation Solution
A driving assistance apparatus and method that incorporates an arbitration section to manage and arbitrate between different types of driving assistance, ensuring only one type is performed at a time by delaying or suppressing conflicting requests within a specified period, thus preventing interference and maintaining the appropriateness of each assistance type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of driving assistance are performed simultaneously or alternately, then the versatility and functionality of the driving assistance system is improved, but driver discomfort increases due to interference between conflicting assistance modes
Solution Approach 1:
The arbitration section performs preliminary checks to determine whether multiple assistance elements are executing conflicting modes before allowing new assistance requests. By preemptively identifying potential conflicts, the system prevents interference between acceleration and deceleration assistance, thereby maintaining driver comfort while preserving system versatility.
Solution Approach 2:
The arbitration section acts as an intermediary between multiple assistance elements and the vehicle control system. It mediates conflicting assistance requests by evaluating their compatibility and selectively permitting or suppressing them, thus resolving the contradiction between providing diverse assistance functions and preventing driver discomfort from conflicting operations.
2Object-affected harmful factors
If arbitration between conflicting assistance modes is implemented, then driver comfort is maintained by preventing interference, but system complexity increases due to the additional arbitration section
Solution Approach 1:
The arbitration section is designed with multi-functionality to handle various types of assistance elements and their conflicting modes through a unified evaluation framework. By implementing a universal arbitration mechanism that can assess different assistance combinations, the system reduces overall complexity compared to having separate conflict-resolution logic for each assistance pair.
3Reliability
If the arbitration section suppresses conflicting assistance requests, then the appropriateness of each assistance type is maintained, but response time to valid assistance requests may be delayed
Solution Approach 1:
The arbitration section dynamically evaluates assistance requests based on current system state and conflict conditions. Rather than applying fixed suppression rules, it adaptively permits or delays assistance activation according to the specific situation, thereby minimizing unnecessary delays while maintaining assistance appropriateness. This dynamic approach allows the system to respond quickly to valid requests that do not create conflicts.
Data Source
AI summary
Provided is a drive assist apparatus such that, in a vehicle in which a plurality of types of drive assist is implemented, the appropriateness of each drive assist can be maintained. A drive assist unit is provided with: a collision avoidance assist unit that implements individual drive assists; a vehicle-to-vehicle distance assist unit; and a cruise travel assist unit. An assist arbitration unit arbitrates between at least two or more drive assists when the at least two or more drive assists are implemented by the drive assist unit within a prescribed time on the basis of a plurality of types of assist elements.