Blind Spot Sensor Angular Width Variation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing blind spot detection systems for vehicles face challenges in accurately recognizing objects far behind and close to the vehicle, due to a large amount of unnecessary data from distant objects and insufficient information from objects far behind, leading to difficulties in distinguishing between single and multiple objects.
Innovation Solution
The system transmits detection signals with varying horizontal angular widths, allowing for more precise object detection by reducing data redundancy and increasing information accuracy, particularly for objects far behind and close to the vehicle, by using multiple sensors emitting signals with different angular widths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If all sensors emit signals with the same horizontal angular width, then the coverage area is uniform, but the data processing complexity increases and detection accuracy for distant objects decreases
Solution Approach 1:
The patent applies local quality by assigning different horizontal angular widths to detection signals based on their emission direction. Sensors emitting signals toward the rear of the vehicle use larger angular widths to capture more reflected signals from distant objects, while sensors emitting forward use smaller angular widths to reduce data processing complexity. This localized adaptation of signal parameters optimizes detection accuracy for each spatial region without uniformly increasing system complexity.
2Loss of information
If signals are emitted with larger horizontal angular width, then more reflected signals are received from distant objects, but data redundancy increases for objects far to the side
Solution Approach 1:
The patent implements parameter changes by dynamically adjusting the horizontal angular width of detection signals based on the emission direction and target object position. For objects far behind the vehicle, signals are emitted with larger angular widths to ensure sufficient reflected signals are captured, maintaining information accuracy. For objects far to the side, smaller angular widths are used to reduce the quantity of redundant data, optimizing the balance between information completeness and data volume.
3Productivity
If signals are emitted with smaller horizontal angular width, then data processing is simplified, but insufficient information is obtained for objects far behind the vehicle
Solution Approach 1:
The patent applies local quality by tailoring the horizontal angular width of detection signals to the specific detection requirements of different spatial regions. For the rear detection zone where objects are far from the vehicle, larger angular widths are used to ensure sufficient reflected signals are captured, maintaining information completeness. For lateral zones where objects are closer and to the side, smaller angular widths suffice, improving data processing efficiency without sacrificing necessary information.
4Measurement precision
If uniform angular width signals are used, then the sensor unit design is simple, but the ability to distinguish between single and multiple objects behind the vehicle is reduced
Solution Approach 1:
The patent implements parameter changes by varying the horizontal angular width of detection signals based on the spatial position and detection requirements. This parameter variation enables the system to better distinguish between single and multiple objects behind the vehicle by optimizing the signal spread for each detection scenario, while avoiding the need for complex additional hardware or signal processing mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the accuracy and reliability of object detection in blind spots, enabling better identification of objects' presence and number, even at critical positions behind the vehicle, with reduced data processing requirements.
Implementation Method 1
a plurality of detection signals of a signal packet are transmitted with a sensor unit and signals reflected on the object and received by a receiving unit are evaluated
Data Source
Figure 1~2
Figure 3~6
AI summary
The invention relates to a method for detecting an object (46, 52, 58 to 60) in a blind spot area (25) of a vehicle (21), in which a sensor unit (23, 26) emits a plurality of detection signals (28 to 45) of a signal packet and optionally evaluates signals reflected by the object (46, 52, 58 to 60) and received by the sensor unit (23, 26), wherein at least two detection signals (28 to 45) are emitted with different horizontal angular widths (b1 to b3) compared to each other. The invention also relates to a driver assistance system (22) for detecting an object in a blind spot area of a vehicle.