Vehicle Beam Irradiation Control for Sensor Interference Mitigation
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Solution Overview
Problem
Existing beam interference between vehicles with different sensor specifications affects sensing accuracy in host vehicles, making it difficult to prevent interference noise from impacting sensing accuracy.
Innovation Solution
A control device that predicts beam interference scenarios and executes path, beam, and speed change controls to mitigate interference risks, adjusting beam irradiation patterns and vehicle paths to avoid interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If beam irradiation is performed for distance measurement, then measurement capability is improved, but beam interference with target vehicle sensors occurs
Solution Approach 1:
The beam sensor performs intermittent irradiation instead of continuous irradiation, creating periodic on/off cycles that allow target vehicle sensors to avoid interference by timing their reception during off-periods
Solution Approach 2:
The irradiation pattern is dynamically adjusted based on detected target vehicles, changing from continuous to intermittent mode when targets are present, and the azimuth scanning pattern is modified to mitigate interference risks
2Object-affected harmful factors
If a predetermined irradiation pattern is generated to reduce interference, then beam interference is reduced, but versatility across different sensor specifications is limited
Solution Approach 1:
The system dynamically changes irradiation parameters including timing intervals, azimuth angles, and duration based on target vehicle detection, allowing adaptation to different sensor specifications rather than using a fixed predetermined pattern
Solution Approach 2:
The beam sensor detects target vehicles and their sensor characteristics, then uses this feedback information to adjust the irradiation pattern in real-time, enabling versatile adaptation to different sensor specifications
3Object-affected harmful factors
If path change control is executed to avoid interference, then beam interference is mitigated, but vehicle path planning complexity increases
Solution Approach 1:
The system predicts potential interference scenes in advance and takes preventive path change actions before interference occurs, rather than reacting to interference after it happens, simplifying the control logic
4Use of energy by moving object
If beam irradiation timing is set to intermittent with scan azimuth, then energy consumption is reduced, but interference mitigation capability is limited
Solution Approach 1:
The system dynamically adjusts both timing and azimuth parameters of beam irradiation based on target vehicle positions and sensor specifications, optimizing the balance between energy consumption and interference mitigation capability
Data Source
AI summary
A control device includes a processor configured to: acquire irradiation related information related to beam irradiation of a host vehicle and a target vehicle; predict, based on the irradiation related information, an interference scene in which the beam interference occurs between the host vehicle and the target vehicle; perform an interference risk control to the host vehicle to mitigate a risk of beam interference in the predicted interference scene; perform a path change control to the host vehicle to change a future path of the host vehicle to a mitigation path that mitigates the beam interference; perform a beam change control to change a scheduled pattern of beam irradiation in which irradiation timing is set to be intermittent and an irradiation azimuth is set in scan manner to a mitigation pattern that mitigates the beam interference in response to the path change control being determined to be prohibited.