Vehicle Door Radar Layout for Obstacle Protection and Gesture Sensing
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Solution Overview
Problem
Existing vehicle door protection systems require multiple radar sensors per door, increasing maintenance costs and integration complexity, while lacking efficient AI-based gesture detection capabilities.
Innovation Solution
A vehicle door protection system utilizing two 180-degree mmWave radar sensors per side, positioned outside the doors, performs AI-based processing of radar point cloud data to detect obstacles and gestures without domain controllers, reducing reliance on central processing units and using common vehicle communication protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple radar sensors are integrated into each vehicle door, then door protection capability is improved, but maintenance costs and device complexity increase
Solution Approach 1:
The patent applies universality by using a single radar sensor module that serves multiple functions: it provides door protection by detecting obstacles in the door opening path and simultaneously enables gesture recognition for contactless door control. This multi-functional approach eliminates the need for separate sensors for each function, thereby reducing the number of components while maintaining comprehensive door protection capability.
Solution Approach 2:
The patent merges door protection detection and gesture recognition functions into a single radar sensor module. By combining these functions in one integrated system rather than using separate sensors, the patent reduces device complexity and maintenance requirements while achieving both protective and control capabilities.
2Reliability
If radar sensors are integrated into vehicle doors, then door protection is improved, but maintenance costs increase due to door replacement
Solution Approach 1:
The patent extracts the radar sensor module from the vehicle door structure and positions it independently on the vehicle body near the door. This extraction allows the sensor to remain functional even when doors are replaced or repaired, separating the protective detection function from the door itself and thereby reducing maintenance costs associated with door replacement.
3Productivity
If domain controllers or central processing units are used for radar data processing, then processing capability is improved, but device complexity and integration requirements increase
Solution Approach 1:
The patent implements self-service by integrating AI-based point cloud processing capabilities directly into the radar sensor module itself. The sensor performs data processing, obstacle detection, and gesture recognition autonomously without requiring external domain controllers or central processing units, thereby reducing integration complexity while maintaining high processing capability.
4Power
If a narrow-field radar sensor is used, then processing load is reduced, but field of view and detection capability deteriorate
Solution Approach 1:
The radar sensor module autonomously processes point cloud data using integrated AI capabilities, enabling it to handle wide-field detection without excessive processing load. The self-service processing architecture allows the system to manage the computational demands of a 180-degree field of view while maintaining efficient operation.
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
This approach minimizes maintenance costs, enhances gesture detection, and reduces integration complexity by performing all signal processing on the radar sensors, allowing efficient door protection and gesture recognition without the need for domain controllers or central processing units.
Implementation Method 1
two mmWave radar sensor modules, each having a field of view of 180 degrees
Implementation Method 2
radiation diagram in the elevation plane, pointed in the elevation in the angle larger than 30 degrees
Data Source
AI summary
The proposed innovative vehicle door protection system uses one radar sensor per vehicle side for door protection purposes, not being mounted on the vehicle door. They have a 180-degree field of view, and a specific radiation diagram in the elevation plane, pointed in the elevation at an angle larger than 60 degrees. Said proposed system executes related radar processing of the radar point cloud data on the sensing module, without utilizing domain controllers or a central processing unit, while still performing AI processing. Also, said proposed system is advantageously used for radar-based gestures control, supporting hand movements, and/or leg movements.