Radar-Based Vehicle Door Obstacle Detection and Angle Control
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Solution Overview
Problem
Conventional vehicle door operation methods are inefficient and prone to damage due to inadvertent contact with undetected obstructions, especially in large vehicles with wide door openings, as they lack effective detection and adaptation mechanisms for external environments.
Innovation Solution
The implementation of radar sensors to receive and filter input data, identify the external environment, and adjust door opening angles based on real-time object detection, distinguishing between actual objects and false objects caused by vehicle environment noise, thereby optimizing door operation and preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional door operation methods are used, then the door can be opened easily, but the door is prone to damage from inadvertent contact with undetected obstructions
Solution Approach 1:
The radar sensor performs preliminary detection of the external environment before the door opening operation is initiated. The system identifies objects and calculates safe opening angles in advance, preventing contact with obstructions before they occur. This preliminary detection and calculation phase ensures that when the door opening command is given, the path is already verified to be safe.
Solution Approach 2:
The system continuously monitors the external environment using radar sensors during door opening operations. Real-time feedback about detected objects is processed to dynamically adjust the door opening angle, ensuring the door stops before contacting any identified obstructions. This closed-loop feedback mechanism prevents damage while maintaining ease of operation.
2Reliability
If radar sensors are used to detect objects, then door operation safety is improved, but false objects caused by vehicle environment noise reduce detection accuracy
Solution Approach 1:
The system applies different processing strategies to different types of radar returns based on their characteristics. Stationary objects (potential false objects from vehicle environment) are identified and filtered using specific criteria, while moving objects are processed differently. This localized quality approach allows the system to handle different object types with appropriate methods, maintaining high detection accuracy while eliminating false positives.
Solution Approach 2:
The system changes detection parameters dynamically based on vehicle operating conditions. When the vehicle is stationary or moving slowly, the radar detection thresholds and filtering parameters are adjusted to distinguish true objects from false objects caused by vehicle environment noise. This parameter adaptation allows accurate object identification across different operating scenarios.
3Ease of operation
If the door opens to maximum available angle, then ingress and egress is facilitated, but the risk of contact with obstructions increases
Solution Approach 1:
The door opening angle is made dynamic rather than fixed at maximum. The system continuously calculates the safe opening angle based on real-time radar detection of objects in the door's path. If objects are detected, the maximum safe angle is reduced accordingly; if the path is clear, the door can open to the full available angle. This dynamic adjustment facilitates ingress and egress when safe while preventing contact when objects are present.
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 solution enhances the safety and efficiency of vehicle door operation by accurately detecting obstacles and adapting the door opening angle, reducing the risk of damage and improving ingress and egress processes.
Implementation Method 1
receiving, by at least one radar sensor on the vehicle, input data related to one or more objects
Implementation Method 2
the vehicle environment noise is determined based on an identification of an object of the one or more objects having a zero Doppler
Data Source
AI summary
Embodiments include methods, systems and computer readable storage medium for a method for operating one or more doors of a vehicle is disclosed. The method includes receiving, by at least one radar sensor on the vehicle, input data related to one or more objects. The method further includes filtering, by the at least one radar sensor, vehicle environment noise from the received input. The method further includes identifying, by the at least one radar sensor, an external environment for the vehicle based on the filtered input. The method further includes operating, by a processor, one or more doors of the vehicle based on the external environment for the vehicle.