Radar Sensor Calibration Reflector With Automated Angle Alignment
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Solution Overview
Problem
Existing manual calibration methods for vehicle-mounted radar sensors lack precision and accuracy, leading to potential errors and inaccurate measurement signals that can compromise driving safety.
Innovation Solution
A device with a reflector plate and actuators for automatic angular adjustment, allowing precise alignment of radar sensors, including a support frame, actuators for stepless or incremental adjustments, and a control unit for communication with a diagnostic device to ensure accurate alignment according to manufacturer specifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual angle adjustment is used, then the device complexity is reduced, but the manufacturing precision and measurement accuracy deteriorate
Solution Approach 1:
The patent replaces manual mechanical angle adjustment with an automated actuator system. The actuator is controlled by a control unit that receives target angle positions from a diagnostic device, automatically positioning the reflector plate with high precision without manual intervention, thereby resolving the contradiction between manufacturing precision and device complexity.
Solution Approach 2:
The system enables self-service calibration through automation. The control unit automatically controls the actuator to position the reflector plate at target angles specified by the diagnostic device, eliminating the need for manual operation and achieving high calibration accuracy through self-contained automated control.
2Reliability
If manual angle adjustment is used, then the ease of operation is improved, but the reliability deteriorates
Solution Approach 1:
The patent replaces manual mechanical adjustment with an automated actuator system controlled by a control unit. This automation eliminates human error in positioning the reflector plate, ensuring reliable and consistent target angle positions are achieved, thereby improving reliability while reducing operational complexity through automation.
Solution Approach 2:
The system incorporates feedback control where the control unit receives information from the diagnostic device about target angle positions and automatically adjusts the actuator accordingly. This closed-loop control ensures reliable positioning by continuously comparing actual positions with target positions and making necessary corrections.
3Measurement precision
If multiple successive angle adjustments are required, then the measurement precision can be improved, but the productivity deteriorates
Solution Approach 1:
The patent transforms the static manual adjustment process into a dynamic automated process. The actuator can quickly and precisely adjust the reflector plate to multiple target angle positions under control unit guidance, enabling multiple calibration measurements to be performed in sequence without manual intervention, thereby maintaining measurement precision while significantly improving productivity.
Solution Approach 2:
The system performs preliminary positioning of the reflector plate to target angle positions before each calibration measurement. The control unit pre-calculates and sends target angle positions to the actuator, which positions the reflector plate in advance, allowing multiple measurements to be conducted efficiently without manual repositioning time between measurements.
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
Enhances calibration accuracy and reduces manual errors, enabling precise alignment and improved measurement signals for vehicle radar sensors.
Implementation Method 1
a reflector plate (10) configured to reflect radar radiation from the radar transmitter
Data Source
Figure 1~2
AI summary
The invention relates to a device, a diagnostic device, and a method for calibrating at least one radar sensor of a vehicle. The device (1) comprises: • a reflector plate (10) configured to reflect radar radiation from the radar sensor (25), • a support frame (2) that supports the reflector plate (10) against a substrate (3), • at least one first actuator (14) configured to adjust an angular position of the reflector plate (10) about at least one first axis (A).