Touch Screen Gearbox Control Vector Validation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The use of touch screens for controlling robotized gearboxes in motor vehicles poses safety risks due to the likelihood of accidental inputs and involuntary controls, especially when objects fall on the screen or incorrect usage.
Innovation Solution
A touch screen control device with an algorithm that validates commands based on the length and orientation of a vector between the pressing and releasing points, combined with ergonomic design and capacitive sensors to ensure secure and intuitive operation, and a protective element with cutouts for safe digital access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a touch screen is used for controlling robotized gearbox, then the ease of operation is improved, but the reliability deteriorates due to accidental inputs and involuntary controls
Solution Approach 1:
The system performs preliminary verification by calculating the vector between press and release points before validating the gear change command. This preliminary action checks whether the finger movement pattern corresponds to an intentional gesture, preventing accidental inputs while maintaining ease of operation through intuitive touch interactions.
Solution Approach 2:
The system provides feedback by analyzing the trajectory and distance of finger movement on the touch screen. The vector calculation between press and release points serves as a feedback mechanism to determine whether the user's input was intentional, thereby improving reliability without compromising the ease of operation.
2Ease of operation
If a touch screen is used for controlling robotized gearbox, then the ease of operation is improved, but object-generated harmful factors worsen due to objects falling on the screen
Solution Approach 1:
The system performs preliminary verification by calculating the vector between press and release points before validating the gear change command. This preliminary action checks whether the finger movement pattern corresponds to an intentional gesture, preventing accidental inputs while maintaining ease of operation through intuitive touch interactions.
Solution Approach 2:
The system requires a minimum vector length threshold to be exceeded for command validation. This partial action requirement filters out spurious inputs caused by objects falling on the screen, as such accidental contacts typically produce vectors below the threshold length, thereby reducing object-generated harmful factors.
3Reliability
If vector analysis algorithm is implemented on touch screen, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical verification mechanisms with a software-based vector analysis algorithm. Instead of using additional physical sensors or mechanical switches to verify intentional input, the system uses computational geometry to analyze the relationship between press and release coordinates, thereby improving reliability while minimizing the increase in device complexity.
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
Enhances safety by preventing involuntary commands and allowing operation without visual attention, ensuring that only intended functions are activated through precise analysis of support vector coordinates and hand presence detection.
Implementation Method 1
The proximity sensor is of the capacitive type
Data Source
Figure 1~2
Figure 3A~4
Figure 5
AI summary
The invention relates to a device for controlling a robotised gearbox of a motor vehicle. The gearbox is connected to a computer and to an electronic control unit so that it is possible to switch at will from a manual mode, in which a control member is used to move up and down through the gears, to an automatic mode, in which the control member is used for the Park (P), Reverse (R), Neutral (N), and Drive (D) positions. The control member is a touch screen (1) subjected to an algorithm comprising the following steps: a standby step (2); a step (3) in which the coordinates of a digital pressure are stored; a step (4) in which the coordinates at which the digital pressure is released are stored; a step (5) in which a vector between the two points (pressure and release) is calculated; a test step (6) in which the length of the vector is compared to a predefined length range. If the vector is shorter than the predefined length, the control member returns to the standby step. If the vector is equal to or longer than the predefined length, a test step (9) is validated, whereby the orientation of the vector is compared to a predefined angular range. If the orientation of the vector is outside the predefined angular range, the control member returns to the standby step (2), but if the orientation of the vector is within the predefined angular range, the desired command, e.g. P, R, N, or D, is validated.