Brake Hold Control Using Driver Gaze at Two-Stage Stops
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Solution Overview
Problem
Existing brake holding functions in vehicles may cause sudden starts during two-stage stops due to inadequate control of brake operation based on driver attention to blind spots, especially in intersections with poor visibility, posing a risk of collisions.
Innovation Solution
A vehicle control system that integrates external environment recognition, driver monitoring, and brake holding control to switch the brake holding function ON/OFF based on driver line-of-sight conditions, ensuring safe two-stage stops by disabling the brake holding function when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the brake holding function is activated to maintain stop state, then vehicle stability is improved, but the risk of sudden start increases when brakes are turned OFF
Solution Approach 1:
The brake holding control unit dynamically switches the brake holding function between ON and OFF states based on real-time driving circumstances. The system activates the brake holding function when appropriate conditions are met and deactivates it when conditions change, making the system adaptive rather than static. This resolves the contradiction by enabling stability when needed while preventing sudden starts when conditions require caution.
Solution Approach 2:
The system continuously monitors driving circumstances and uses this feedback to control the brake holding function state. The brake holding control unit receives information about the current driving situation and adjusts the brake holding function accordingly, creating a closed-loop control system that prevents sudden starts while maintaining stability when appropriate.
2Reliability
If the brake holding function is always ON, then safety is improved, but ease of operation deteriorates due to unnecessary restrictions
Solution Approach 1:
The brake holding function transitions from a static always-ON state to a dynamic state that adapts to driving circumstances. The brake holding control unit evaluates real-time conditions and switches the function ON or OFF accordingly, providing safety when needed while maintaining operational flexibility when conditions permit.
Solution Approach 2:
The system applies the brake holding function selectively based on local driving conditions rather than uniformly in all situations. The brake holding control unit determines whether to activate the function based on specific circumstances such as blind spot detection, intersection status, and vehicle motion state, providing localized safety control that respects operational needs.
3Ease of operation
If the brake holding function is always OFF, then ease of operation is improved, but reliability deteriorates due to inability to maintain stop state
Solution Approach 1:
The system dynamically adjusts the brake holding function state based on driving circumstances rather than remaining permanently OFF. The brake holding control unit activates the function when conditions require stop state maintenance and deactivates it when simplicity is sufficient, providing reliability when needed while maintaining operational simplicity otherwise.
Data Source
AI summary
The present invention provides a vehicle control system, a vehicle control device, and a vehicle control method that are highly safe and prevent an own vehicle from suddenly starting during a two-stage stop. A vehicle control system 1 includes an external environment recognition unit 120 that recognizes external environment information that is information on the surroundings of the vehicle; a driver monitoring unit 130 that detects the direction of the line of sight of a driver of the vehicle; a brake holding unit 150 that maintains the state of operation of brakes of the vehicle; a brake holding control unit 144 that controls the turning ON or OFF of the brake holding unit 150; and a driver monitoring condition generation unit 143 that generates, on the basis of the external environment information detected by the external environment recognition unit, a line-of-sight condition of the driver's line of sight to be detected by the driver monitoring unit. The brake holding control unit 144 performs control to turn off the brake holding unit 150 in a case where the driver's line of sight detected by the driver monitoring unit 130 satisfies the line-of-sight condition.