Blind Spot Assist Control for Long-Vehicle Passing Alerts
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Solution Overview
Problem
Conventional blind spot monitoring systems often provide unnecessary alerts when a driver is passing a long vehicle, such as a truck or bus, as the system alerts the driver when the rear end of the other vehicle enters the warning area, even if the driver can visually recognize the vehicle.
Innovation Solution
A control device that detects moving bodies in the surroundings of a vehicle and performs driver assist only when the moving body enters an assist area from the front, based on the positional relationship between the moving body and the vehicle or an eyellipse reference line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driver assist system alerts the driver when the rear end part of another vehicle enters the warning area, then the driver is notified of potential blind spot hazards, but the driver receives unnecessary alerts when passing long vehicles that are visually recognizable
Solution Approach 1:
The patent applies local quality by differentiating the alert trigger condition based on the direction from which the other vehicle approaches. For vehicles approaching from the rear, the rear end entry triggers an alert, while for vehicles approaching from the front, only entry from the front part triggers an alert. This localized differentiation of alert conditions reduces unnecessary alerts while maintaining safety for genuinely hazardous situations.
Solution Approach 2:
The patent inverts the conventional alert logic by considering not just the rear end entry (traditional blind spot monitoring) but also the front part entry of vehicles. By adding the front part entry condition and differentiating based on approach direction, the system reverses the single-threshold approach to a dual-threshold approach that reduces false positives while maintaining safety.
2Reliability
If the assist area is set to cover the entire blind spot region, then all potential hazards are detected, but alerts are generated even when the driver can visually recognize the vehicle
Solution Approach 1:
The patent divides the assist area into different regions (front part and rear part) and applies different alert logic to each region. By setting distinct entry conditions for front part entry versus rear end entry, the system maintains comprehensive hazard detection while improving driver experience by avoiding unnecessary alerts in situations where the vehicle is visually recognizable.
3Device complexity
If the system uses a simple rear end entry threshold for alerting, then the system is easy to implement, but it cannot distinguish between visually recognizable vehicles and actual blind spot hazards
Solution Approach 1:
The patent segments the assist area into front part and rear part regions, and segments the alert conditions into different entry scenarios (front part entry vs. rear end entry). This segmentation allows the system to maintain relative implementation simplicity while significantly improving measurement precision in judging whether a vehicle constitutes a genuine hazard or is visually recognizable.
Data Source
AI summary
A control device configured to detect a moving body present in the surroundings of a vehicle entering an assist area set in the surroundings of the vehicle and to provide driver assist when the moving body enters the assist area from a front part of the assist area based on the positional relationship between the front end position of the moving body and the vehicle or based on the positional relationship between the moving body and an eyellipse reference line set for each vehicle.