Parallel Parking Guide Markers for Vehicle Alignment
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Solution Overview
Problem
Conventional driving assistance devices for parallel parking are complex and difficult for drivers to use accurately, as they require judging the alignment of the vehicle with the roadside, which can be challenging due to the difficulty in determining parallel lines from a camera view, leading to potential failure in parking within designated spaces.
Innovation Solution
A driving assistance device that includes imaging and displaying means, along with roadside detecting and guide marker producing and superimposing capabilities, to display first and second guide markers on the screen, helping the driver align the vehicle at specific angles with the roadside, ensuring accurate parking by confirming the position and angle of the vehicle relative to the roadside.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional driving assistance device uses a sensor to sense steering angle and changes guide marker position dynamically, then the device can provide steering angle guidance, but the construction becomes complex and difficult to operate accurately
Solution Approach 1:
The patent extracts the steering angle sensing function from the system by using the relationship between guide marker position on screen and vehicle steering angle. Instead of adding a physical sensor, the system utilizes the camera's field of view and guide marker displacement to infer steering angle, thereby achieving measurement precision without increasing device complexity
Solution Approach 2:
The guide marker serves as an intermediary element that translates steering angle information into visual feedback. The marker's position change on the screen acts as a mediator between the driver's steering input and the visual guidance system, eliminating the need for direct sensor measurement while maintaining operational accuracy
2Ease of operation
If the driver turns the steering wheel to align the guide marker with the parking space, then parking guidance is provided, but it is hard for the driver to keep the steering wheel at the appropriate angle
Solution Approach 1:
The system provides continuous visual feedback by displaying the guide marker's position relative to the parking space boundaries. The driver can observe the marker's alignment in real-time and adjust steering accordingly, creating a closed-loop control system that improves both ease of operation and control precision without requiring complex sensors
Solution Approach 2:
The guide marker creates a visual copy or representation of the desired parking alignment on the screen. Instead of requiring the driver to physically judge angles and positions, the system projects a graphical representation of the correct parking orientation, making it easier to understand and follow the required steering angle
3Device complexity
If the device displays a single guide marker for parking guidance, then the construction is simple, but it is hard for the driver to judge alignment and angle accurately
Solution Approach 1:
The guidance system is segmented into multiple functional guide markers: a first guide marker indicating the vehicle's current orientation angle and a second guide marker indicating the target parking position. This segmentation allows the driver to separately judge angle alignment and position alignment, improving measurement precision while keeping each individual marker simple
4Manufacturing precision
If the device provides detailed parking assistance functions, then parking accuracy is improved, but the device construction becomes complex
Solution Approach 1:
The guide marker system serves multiple functions simultaneously: it displays vehicle orientation angle, indicates target parking position, provides alignment guidance, and offers position feedback. By making the guide marker multi-functional, the system achieves high parking precision without adding separate components for each function, thereby avoiding increased device complexity
Data Source
AI summary
The driving assistance device is adapted to have the first guide marker occupy a first position to ensure that the roadside occupies the first position in superimposed relationship with the first guide marker, at the time of making a judgment that an angle of the vehicle to the roadside is equal to a predetermined value, after the vehicle is moved toward the space in reverse gear with one maximum steering angle, and to have the second guide marker occupy a second position to ensure that the roadside occupies the second position in superimposed relationship with the second guide marker, at the time of making a judgment that the second guide marker is superimposed on the roadside, after the automotive vehicle is moved toward the space straight in reverse gear and the vehicle is parked, after the vehicle is moved toward the space in reverse gear with the other maximum steering angle.