Height-Adjustable Chassis for Close-Range Parking Object Detection
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Solution Overview
Problem
Existing vehicle sensor systems struggle to detect objects of low height or those close to the vehicle, particularly during automated parking maneuvers, leading to potential safety risks due to undetected obstacles.
Innovation Solution
A method utilizing a height-adjustable chassis to dynamically adjust the vehicle's position and orientation, enhancing the detection range of environmental sensors to include objects closer to the vehicle, combined with various sensor types like cameras, ultrasonic, lidar, and radar, to improve object recognition during parking maneuvers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle uses a fixed sensor system at regular height, then the detection range covers objects at normal distances during driving, but objects of low height or close to the vehicle cannot be detected
Solution Approach 1:
The patent applies the dynamics principle by making the chassis height adjustable rather than fixed. The height-adjustable chassis can dynamically change its position between a driving position and a parking position, allowing the sensor system to adapt its detection range accordingly. This resolves the contradiction by enabling the vehicle to detect low-height objects during parking maneuvers while maintaining normal detection capability during driving.
Solution Approach 2:
The patent applies parameter changes by modifying the height parameter of the chassis. By changing the chassis height from a regular driving height to a lowered parking height, the sensor system's detection parameters are effectively changed, allowing it to detect objects that were previously below its detection threshold. This parameter adjustment directly addresses the detection difficulty of low-height objects.
2Difficulty of detecting and measuring
If the chassis is lowered to detect close objects, then detection range for nearby objects improves, but the vehicle's ground clearance and stability may be compromised
Solution Approach 1:
The dynamics principle allows the chassis to be dynamically adjusted to different heights based on the maneuver type. During parking maneuvers, the chassis is lowered to improve detection of close objects. During normal driving, the chassis returns to its regular height to maintain stability and ground clearance. This dynamic adjustment resolves the contradiction between detection capability and vehicle stability.
Solution Approach 2:
The system performs preliminary action by automatically lowering the chassis before or during the parking maneuver initiation. This preliminary height adjustment ensures that the sensor system is properly positioned to detect obstacles before the vehicle begins its parking motion, preventing collisions while maintaining stability throughout the maneuver.
3Reliability
If multiple sensors are added to detect low-height objects, then detection capability improves, but device complexity increases
Solution Approach 1:
Rather than adding multiple static sensors, the patent uses a dynamic approach with the height-adjustable chassis to move the existing sensor system into different detection positions. This resolves the contradiction by achieving enhanced detection capability through chassis movement rather than through sensor proliferation, thereby avoiding increased system complexity.
Solution Approach 2:
The height-adjustable chassis serves multiple functions: it maintains normal driving height for regular detection, lowers to parking height for close object detection, and provides structural support for the sensor system. This multi-functionality resolves the contradiction by using an existing component for dual purposes rather than adding dedicated detection hardware.
Data Source
AI summary
A method for operating a driver assistance system of a motor vehicle for assisting detection of objects in an environment of the motor vehicle. The motor vehicle is equipped with a height-adjustable chassis. During a driving maneuver, the height-adjustable chassis is set into a driving position in which an object can be detected at a regular distance from the motor vehicle. During a parking maneuver, the height-adjustable chassis is automatically set into a parking position in which an object can be detected at a smaller distance from the motor vehicle. A device that is configured to carry out the method, and a corresponding computer program, are also described.