Radar Sensor Misalignment Detection via Target Comparison
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Misalignment of radar sensors in vehicles can lead to erroneous detection of targets, resulting in potential accidents, particularly in systems like adaptive cruise control and inter-vehicle distance warning, due to errors in angle adjustments affecting distance measurements.
Innovation Solution
A radar sensor control device and method that uses a similarity monitoring area to determine if two radar sensors are misaligned by comparing detection target information from spaced-apart sensors, including parameters like reflection power, area, distance, and speed, to ensure accurate alignment and target detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If radar sensor angle adjustment is performed to improve target detection accuracy, then measurement precision is improved, but misalignment errors still occur due to mounting inaccuracies
Solution Approach 1:
The system uses multiple radar sensors to detect the same target and compares the detection results. When misalignment is detected through comparison of target positions and detection consistency, the system provides feedback to identify and correct the alignment issue, thereby improving reliability while maintaining measurement precision
Solution Approach 2:
The patent introduces a control device as an intermediary that coordinates multiple radar sensors, compares their detection results, and identifies misalignment issues. This intermediary system enables indirect verification of sensor alignment by using the collective data from multiple sensors rather than relying on direct single-sensor measurements
2Reliability
If multiple radar sensors are deployed to improve detection reliability, then sensor alignment reliability is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple radar sensors into a coordinated system where sensors are spaced at predetermined intervals and work together. The control device merges the detection results from multiple sensors to identify misalignment, achieving improved reliability while managing complexity through integrated processing
Solution Approach 2:
Each radar sensor in the system serves multiple functions: primary target detection, alignment verification, and mutual calibration. The control device also performs multiple functions including data reception, comparison analysis, and misalignment detection, reducing overall system complexity through multi-functionality
3Measurement precision
If radar sensor mounting angle is adjusted to capture preceding vehicle accurately, then target detection accuracy is improved, but misalignment causes erroneous detection of side lane targets
Solution Approach 1:
The system compares detection results from multiple radar sensors to identify inconsistencies. When a sensor detects a target that other sensors do not confirm, the feedback mechanism identifies this as potential erroneous detection due to misalignment, allowing correction before false alerts are generated
Solution Approach 2:
The system performs preliminary alignment verification by comparing detection results from multiple sensors before final target identification. This preliminary check prevents erroneous detection of side lane targets by identifying and flagging misaligned sensor readings before they contribute to false target detection
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
The solution effectively detects misalignment between radar sensors, enhancing the accuracy of target detection and preventing potential accidents by ensuring precise alignment and reliable sensor operation.
Implementation Method 1
a receiver 110 receiving first detection target information 220 from a first radar sensor 21 and receiving second detection target information 230 from a second radar sensor 22
Data Source
AI summary
The disclosure relates to a device and method for controlling radar sensors. According to an embodiment, a device for controlling a radar sensor comprises a receiver receiving first detection target information from a first radar sensor and receiving second detection target information from a second radar sensor spaced apart from the first radar sensor by a predetermined distance, a determiner determining whether the second detection target information is present in a similarity target monitoring area set to include the first detection target information, if the first detection target information is received, and a controller detecting whether the first radar sensor and the second radar sensor are misaligned using the first detection target information and the second detection target information if the similarity target monitoring area includes the first detection target information and the second detection target information.