Vehicle Radar Sensitivity Control for Cabin and Obstacle Sensing
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Solution Overview
Problem
Existing vehicle convenience systems require multiple radars, leading to duplication and inefficiency, as each system optimizes radar performance separately, necessitating a method to efficiently control one radar for optimal performance across various systems.
Innovation Solution
A radar controller that determines sensitivity and detection speed based on operation modes, such as interior or exterior detection, to control a single radar for multiple purposes, utilizing a table to adjust antenna configurations and bandwidth for different modes like ROA, PPN, high-speed, and low-speed modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple radars are used for different convenience systems, then each system can be optimized for its specific function, but device complexity and cost increase due to duplication
Solution Approach 1:
The patent implements a single radar device that can perform multiple detection functions by dynamically switching between different operation modes (interior detection mode and exterior detection mode). The radar controller configures the radar to operate in different modes depending on the required function, eliminating the need for separate dedicated radars for interior and exterior detection systems.
Solution Approach 2:
The radar system dynamically adjusts its operation mode, sensitivity, and detection speed based on real-time requirements. The controller can switch between interior and exterior detection modes, and within each mode, adjust parameters like detection speed (first level, second level, third level) and sensitivity according to the specific convenience system being used, allowing one radar to adaptively serve multiple purposes.
2Device complexity
If one radar is used for multiple convenience systems, then device complexity is reduced, but measurement precision and detection performance may deteriorate
Solution Approach 1:
The patent applies different detection parameters and sensitivity levels tailored to specific detection scenarios. For interior detection, the radar uses specific sensitivity settings optimized for detecting passengers inside the vehicle, while for exterior detection, different sensitivity and detection speed levels are applied. This scenario-specific parameter configuration ensures high detection accuracy for each function despite using a single radar.
Solution Approach 2:
The radar controller dynamically changes operational parameters including sensitivity, detection speed, and operation mode based on the required function. The system can adjust detection speed to different levels and modify sensitivity settings according to whether interior or exterior detection is needed, maintaining high measurement precision across different applications through parameter adaptation.
3Productivity
If radar sensitivity and detection speed are optimized for one function, then performance for that function improves, but performance for other functions deteriorates
Solution Approach 1:
The radar system dynamically switches between different operation modes and adjusts detection parameters in real-time based on the required function. The controller can select from multiple detection speed levels and sensitivity settings depending on whether interior or exterior detection is needed, allowing the system to maintain high productivity for the current function while retaining adaptability to switch to other functions when needed.
Solution Approach 2:
The radar operates in periodic cycles, alternating between interior detection mode and exterior detection mode based on system requirements. The controller periodically switches operation modes and adjusts parameters accordingly, allowing the single radar to deliver optimized performance for different functions at different times, thereby achieving both high productivity for individual functions and overall versatility.
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
Enables a single radar to perform optimally across various vehicle convenience systems by adjusting sensitivity and detection speed according to operational modes, reducing redundancy and enhancing system efficiency.
Implementation Method 1
a radar that detects a passenger located inside the vehicle and an obstacle located outside the vehicle
Data Source
AI summary
A radar controller for a vehicle and a method therefore are provided. The radar controller includes a radar that detects a passenger located inside the vehicle and an obstacle located outside the vehicle and a controller that determines sensitivity and a detection speed corresponding to an operation mode of the radar and controls the radar to operate at the determined sensitivity and the determined detection speed.