Vehicle Blind Spot Detection Sensitivity Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vehicle control systems face challenges in accurately detecting vehicles in blind spots, particularly when another vehicle enters the detection area from the front, leading to decreased accuracy and potential false warnings or missed notifications.
Innovation Solution
A vehicle control apparatus with a rear side detecting unit, a time acquiring unit, and a sensitivity setting unit that adjusts detection sensitivity based on the estimated arrival and departure times of a front approaching vehicle, enhancing detection accuracy by setting higher sensitivity during critical periods and lower sensitivity during non-critical periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensor detection range is fixed, then the device complexity is reduced, but the measurement precision of vehicles entering from the front decreases
Solution Approach 1:
The patent applies dynamics by making the detection sensitivity adjustable rather than fixed. The control unit dynamically changes the detection sensitivity of the sensor based on the predicted trajectory of approaching vehicles. When a vehicle is predicted to enter the blind spot area, the detection sensitivity in that specific area is increased, allowing the system to detect vehicles entering from the front without requiring a physically larger or more complex sensor array.
Solution Approach 2:
The patent changes the detection sensitivity parameter of the sensor based on predicted vehicle trajectories. By adjusting the sensitivity parameter dynamically according to the situation (whether a vehicle is predicted to enter the blind spot), the system achieves high detection accuracy for vehicles entering from the front without needing to increase the physical detection range or add more sensors, thus avoiding increased device complexity.
2Measurement precision
If the detection sensitivity is increased, then the measurement precision improves, but the false detection rate increases
Solution Approach 1:
The patent applies local quality by adjusting the detection sensitivity specifically in the blind spot area rather than uniformly across the entire detection range. When a vehicle is predicted to enter the blind spot, the control unit increases detection sensitivity only in that specific area, while maintaining normal sensitivity elsewhere. This localized adjustment improves detection accuracy in the critical blind spot region without increasing false detections in other areas.
Solution Approach 2:
The system performs preliminary action by predicting vehicle trajectories in advance using detection results from multiple time points. Before a vehicle actually enters the blind spot, the control unit predicts its trajectory and pre-adjusts the detection sensitivity accordingly. This preliminary prediction and preparation allows the system to be ready to detect the vehicle accurately when it enters the blind spot, while avoiding premature high-sensitivity detection that would cause false warnings.
3Measurement precision
If the detection range is expanded to cover front areas, then the measurement precision for overtaking vehicles improves, but the device complexity increases
Solution Approach 1:
The patent uses dynamics to make the detection range effectively expandable without physical expansion. By dynamically adjusting the detection sensitivity in specific areas based on predicted vehicle trajectories, the system can focus detection resources on the blind spot area when needed, achieving effective coverage of front areas without physically expanding the sensor detection range or adding more sensors.
Data Source
AI summary
In a vehicle control apparatus, a rear side detecting unit, mounted to an own vehicle, detects another vehicle that is present in a first area behind and to a side of the own vehicle. A time acquiring unit, mounted to the own vehicle, acquires a first time that is an estimated time at which a front approaching vehicle will arrive at the first area. The front approaching vehicle is another vehicle that is relatively nearing the own vehicle from ahead of the own vehicle. A sensitivity setting unit, mounted to the own vehicle, sets a detection sensitivity of the rear side detecting unit to the other vehicle in at least a part of the first area in such a manner that the detection sensitivity during a predetermined period set based on the first time is higher than the detection sensitivity during a remaining period other than the predetermined period.