Radar Mounting Angle Detection Using Moving Target Lane
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Solution Overview
Problem
The accuracy of vehicular radar systems is compromised when the radar mounting angle changes due to minor collisions or vibrations during driving, leading to reduced accuracy in position information and potential malfunctions in vehicle control, especially in environments with few stationary structures.
Innovation Solution
An apparatus and method that detect the radar mounting angle using the driving lane of a nearby moving target during straight driving, comprising an image sensor, a controller, and sensors to determine the vehicle's driving state, select a moving target, generate a moving target driving lane, and detect the radar mounting angle, thereby determining if angle calibration is necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If radar is mounted near the vehicle bumper, then the radar can be easily installed and integrated with the vehicle structure, but the radar mounting angle changes due to minor collisions or vibrations during driving
Solution Approach 1:
The system performs preliminary detection of the radar mounting angle using image data before calibration is needed. The controller continuously monitors the mounting angle and determines when calibration is required, allowing proactive maintenance before the angle deviation affects radar performance critically.
Solution Approach 2:
The system establishes a feedback loop where the controller continuously detects the radar mounting angle using image data from the image sensor, compares it against reference values, and triggers calibration procedures when deviations exceed thresholds. This closed-loop feedback ensures the radar maintains accurate mounting angles despite vibrations or collisions.
2Adaptability or versatility
If radar mounting angle changes, then the radar can adapt to some degree of misalignment, but the accuracy of position information on surrounding objects is reduced
Solution Approach 1:
The controller continuously monitors the radar mounting angle using image data and provides feedback to determine when calibration is needed. This feedback mechanism maintains measurement precision by detecting angle changes and triggering recalibration before accuracy deteriorates significantly.
Solution Approach 2:
The system changes the parameter being monitored from direct radar signal analysis to visual analysis using image data from the image sensor. By detecting the radar's physical orientation through image processing, the system can identify mounting angle changes and trigger calibration, thereby maintaining position information accuracy.
3Measurement precision
If traditional methods are used to detect radar mounting angle, then stationary structures are required for calibration, but detection cannot be performed in open areas with few stationary structures
Solution Approach 1:
The system uses the vehicle's own image sensor to capture image data for detecting the radar mounting angle, eliminating the need for external stationary structures. The image processor analyzes images of the radar itself or its mounting environment, allowing the system to perform self-diagnosis and calibration determination without external references.
Solution Approach 2:
The image sensor serves multiple functions: capturing images for surrounding object detection, vehicle driving information identification, and radar mounting angle detection. This multi-functionality allows the system to operate in diverse environments without requiring specialized calibration infrastructure.
4Measurement precision
If continuous monitoring of radar mounting angle is performed, then the accuracy of position information is maintained, but the complexity of the detection system increases
Solution Approach 1:
The system uses the existing image sensor and controller for multiple purposes including surrounding object detection, driving information identification, and radar mounting angle detection. By reusing existing components rather than adding dedicated monitoring hardware, the system maintains measurement precision without proportionally increasing device complexity.
Solution Approach 2:
The controller utilizes the vehicle's existing image processing capabilities to detect the radar mounting angle, making the system self-diagnosing without requiring additional dedicated monitoring equipment. This self-service approach maintains accuracy while minimizing added complexity.
Data Source
AI summary
The present disclosure relates to an apparatus and a method for detecting a radar mounting angle. The present disclosure provides an apparatus for detecting the radar mounting angle that includes a controller configured to determine a vehicle driving state of the vehicle, select a moving target when the vehicle driving state of the vehicle is determined to be straight driving, store a position of the moving target and generate a moving target driving lane of the moving target based on position information on the moving target, and detect a radar mounting angle of the vehicle using the generated moving target driving lane of the moving target.