Radar Sensor Vertical Alignment Adjustment
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Solution Overview
Problem
Vehicle sensors, such as radar sensors, experience misalignment due to collisions or vehicle deterioration, leading to reduced accuracy and malfunctioning of advanced driver assistance systems, with existing technologies only automatically adjusting horizontal alignment and requiring manual intervention for vertical alignment.
Innovation Solution
An apparatus that includes a surface reflected wave measuring unit, a vertical misalignment determining unit, and a vertical alignment adjusting unit, which uses a tilting motor and antenna switching to automatically correct vertical misalignment by adjusting the radiating or receiving angles of the sensor signals based on signal intensity or slope measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual service is provided to adjust vertical alignment of radar sensor, then alignment accuracy is improved, but time consumption and labor cost increase
Solution Approach 1:
The radar sensor system performs self-diagnosis and self-adjustment of vertical alignment by automatically detecting misalignment conditions and controlling the tilting motor to adjust the antenna angle, eliminating the need for manual service intervention
Solution Approach 2:
The patent replaces manual mechanical adjustment with an automated control system that uses signal processing to detect misalignment and electronically controls the tilting motor to perform the adjustment, substituting human operation with an automated electromechanical system
2Reliability
If vertical alignment of radar sensor is not automatically adjusted, then device complexity is reduced, but system reliability deteriorates
Solution Approach 1:
The radar sensor system integrates multiple functions including detection, diagnosis, and adjustment control within a single unified system, allowing the same device to perform both sensing and self-correction operations without requiring separate dedicated alignment equipment
Solution Approach 2:
The system continuously monitors the radar signal characteristics, compares them against reference values to detect misalignment conditions, and provides feedback control to the tilting motor to maintain proper vertical alignment, creating a closed-loop self-regulating system
3Ease of manufacture
If sensor position changes due to collision or decrepitude, then manufacturing cost is reduced, but measurement precision deteriorates
Solution Approach 1:
The system transitions from a static fixed alignment approach to a dynamic adaptive system that continuously monitors signal characteristics and automatically adjusts the antenna angle in response to changing conditions, allowing the sensor to maintain accuracy despite positional changes from collisions or vehicle deterioration
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
Ensures accurate sensor alignment, maintaining the functionality of advanced driver assistance systems and ensuring safe driving by automatically detecting and correcting vertical misalignment of sensors post-collision or vehicle deterioration.
Implementation Method 1
a radar sensor, an ultrasonic sensor, etc. to carry out their own functions
Implementation Method 2
measuring the signal intensity of a surface reflected wave reflected from a road surface on the basis of the reflected wave received by a sensor signal transmitted from a sensor
Data Source
AI summary
Provided are a sensor capable of adjusting vertical alignment and a sensor vertical alignment adjusting apparatus using the same. The sensor has a structure with a plurality of switchable transmitting and receiving antennas so as to be able to adjust the vertical alignment, or a structure with a tilting motor for adjusting a radiating or receiving angle. The sensor vertical alignment adjusting apparatus using such a sensor corrects vertical misalignment of the sensor by determining whether or not the vertical misalignment of the sensor occurs, variably switching one from among the plurality of transmitting or receiving antennas of the sensor or controlling the tilting motor, and adjusting the radiating angle of the sensor signal or the receiving angle of a reflected wave of the sensor signal.