Radar Vertical Angle Abnormality Detection Using Maximum Detection Distance
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Solution Overview
Problem
Existing driver convenience systems face challenges in detecting vertical angle abnormalities in radar sensors without additional sensors, leading to potential inaccuracies in distance detection and increased risk of collisions due to radar misalignment, which is costly to rectify with additional sensor installations.
Innovation Solution
A driver convenience system that utilizes a preset required mount angle range and estimates the vertical angle based on the maximum detection distance between a vehicle and a stationary object using vehicle-ahead information from the radar, with a monitoring unit, updating unit, vertical angle estimating unit, and determining unit to identify and notify vertical angle abnormalities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional sensors are mounted to detect vertical angle abnormalities, then detection accuracy is improved, but system cost and complexity increase
Solution Approach 1:
The radar system uses its own detection capabilities to monitor its mounting status. The control unit analyzes detection results from the radar itself (distance, angle, velocity of stationary objects) to determine if vertical angle abnormalities exist, eliminating the need for separate monitoring sensors.
Solution Approach 2:
The radar serves dual purposes: it performs its primary function of detecting moving objects while simultaneously providing data for monitoring its own mounting status. The control unit processes radar detection results to detect vertical angle abnormalities, making the existing radar system multi-functional.
2Measurement precision
If radar mounting position deviates due to vehicle shocks, then detection accuracy deteriorates, but preventing deviation requires additional mounting structures
Solution Approach 1:
The control unit continuously monitors detection results and compares them against expected patterns for stationary objects. When deviations are detected (such as inconsistent distance measurements or unexpected detection of stationary objects as moving), the system generates feedback indicating potential mounting position deviations, allowing for corrective action.
Solution Approach 2:
Instead of using mechanical methods to prevent or correct mounting deviations (such as additional mounting structures or physical alignment mechanisms), the system uses electronic detection and analysis of radar data to identify and signal mounting position problems.
3Reliability
If vertical angle abnormality is not detected, then collision risk increases, but continuous monitoring requires additional sensors
Solution Approach 1:
The radar system monitors its own operational status by analyzing its detection outputs. The control unit detects vertical angle abnormalities by examining patterns in the radar's detection results, such as unexpected detection of stationary objects or inconsistent distance measurements, enabling the system to self-diagnose mounting issues.
Solution Approach 2:
The system uses the radar's existing detection capabilities beyond their primary purpose. By analyzing detection results that would normally be used for object tracking and distance measurement, the system extracts additional information about mounting status, achieving monitoring functionality without additional sensors.
Data Source
AI summary
A driver convenience system for determining a vertical angle abnormality of a radar includes: a radar which is mounted on a vehicle to detect vehicle-ahead information; and an electronic control unit which controls driving of the vehicle based on the vehicle-ahead information detected by the radar. The electronic control unit includes: a monitoring unit configured to monitor a stationary object based on the vehicle-ahead information detected by the radar; an updating unit configured to update a maximum detection distance between the stationary object monitored by the monitoring unit and the vehicle; a vertical angle estimating unit configured to estimate a vertical angle of the radar by using the maximum detection distance updated by the updating unit; and a determining unit configured to determine that a vertical angle abnormality occurs in the radar when the estimated vertical angle is out of a preset required mount angle.