Navigation Target Specification Device for Autonomous Vehicle Steering
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Solution Overview
Problem
Autonomous motor vehicles require a steering wheel for exceptional situations, occupying valuable space and limiting passenger freedom, while existing solutions only indicate the vehicle's movement path without addressing the need for driver intervention in borderline situations.
Innovation Solution
A navigation target specification device that uses geographic coordinates to mark a region for the motor vehicle to stop, allowing control without a steering wheel, utilizing a light point or image projection and orientation detection for precise navigation, enabling semi- or fully autonomous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a steering wheel is provided in autonomous motor vehicles for exceptional situations, then driver intervention capability is maintained, but installation space increases and passenger freedom of movement is limited
Solution Approach 1:
The patent extracts the essential function of steering (direction control) from the physical steering wheel and implements it through a navigation device that projects directional indicators onto the ground. The navigation device specifies a target position and the vehicle autonomously navigates to it, eliminating the need for a physical steering wheel while maintaining directional control capability.
Solution Approach 2:
The patent replaces the mechanical steering wheel system with an optical projection system (light-based navigation indicators) combined with autonomous navigation algorithms. The directional guidance is achieved through projected light patterns showing the movement path, substituting mechanical steering with optical-mechanical autonomous control.
2Object-generated harmful factors
If existing light projection systems are used to indicate movement path, then other road users are informed, but the system cannot specify precise navigation targets for autonomous vehicles in borderline situations
Solution Approach 1:
The navigation device performs preliminary action by pre-specifying the exact target position and projecting the complete movement path before the vehicle executes the maneuver. This allows the autonomous vehicle to plan and execute precise navigation to specific locations (such as parking spaces) while informing road users of the intended path in advance.
Solution Approach 2:
The system incorporates feedback mechanisms where the navigation device continuously monitors the vehicle's position relative to the projected path and target, adjusting the projection to maintain precise alignment. This feedback loop ensures both accurate navigation target specification and continuous communication of the movement path to road users.
Data Source
AI summary
The relates to a method for operating a driver assistance unit of a motor vehicle using a navigation target specification device. A control unit operates by: receiving a target specification signal describing a projection on a trafficable driving surface; establishing the portion of the trafficable driving surface to which the light of the projection is applied as a driving target region; and, based on the received target specification signal, establishing a relative position of the motor vehicle relative to the driving target region. There is also a step of receiving an orientation signal from an orientation detection unit of the navigation target specification device, which describes a spatial target specification orientation of the navigation target specification device in the driving target region, on which basis a navigation target is established. Depending on the established relative position and the established navigation target, there is a step of establishing a movement path to the navigation target, a step of generating a navigation signal describing a controlling of the motor vehicle along the established movement path, and a step of transmitting the generated navigation signal to the driver assistance unit of the motor vehicle.