Agricultural Machine Display Verification for Safety-Critical Alerts
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Solution Overview
Problem
Existing agricultural machines face challenges in ensuring that safety-critical user information is accurately displayed on the user interface, often due to overlay issues or software errors, which can lead to critical information being obscured or lost.
Innovation Solution
The display control unit determines a first control value from the image data and transmits it to the computing device, which compares it with a second control value based on safety-critical user information, triggering an emergency routine if the information is not displayed correctly, ensuring that safety-critical information is visible and preventing hardware and software errors from causing display failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple windows and information are displayed on the user interface, then the information completeness is improved, but the reliability of safety-critical information display deteriorates due to overlay issues
Solution Approach 1:
The system implements a feedback mechanism where the computing device monitors whether safety-critical information is actually displayed in the predetermined region by comparing image data with expected display content. This feedback loop detects when safety-critical information is obscured by other windows or elements, allowing the system to alert the user or adjust the display to ensure critical information visibility.
Solution Approach 2:
The system performs preliminary verification of safety-critical information display by checking the image data before user interaction. The computing device proactively determines whether safety-critical information is represented in the image data displayed in the predetermined region, preventing potential information loss before it occurs.
2Adaptability or versatility
If software complexity increases to handle multiple display elements, then the functionality is improved, but the risk of software errors causing information loss increases
Solution Approach 1:
The verification mechanism provides continuous feedback on whether safety-critical information is correctly displayed, enabling detection of software errors that may cause information loss. This feedback system monitors the display output without adding complexity to the core display functionality.
Solution Approach 2:
The system introduces an intermediary verification layer between the display control unit and the user. The computing device acts as a mediator that independently verifies whether safety-critical information is displayed correctly, without interfering with the normal display operations of the display control unit.
3Device complexity
If no verification mechanism is implemented, then the device complexity is reduced, but the safety and reliability of critical information display deteriorates
Solution Approach 1:
The system implements a feedback-based verification mechanism where the computing device monitors display output and alerts the user when safety-critical information is not properly displayed. This approach maintains system simplicity while enhancing reliability through intelligent monitoring.
Solution Approach 2:
The system performs self-verification of safety-critical information display using existing computing resources. The computing device uses its own processing capabilities to verify display content without requiring external verification systems, maintaining simplicity while ensuring reliability.
Data Source
Figure 1
AI summary
The invention relates to an agricultural machine, in particular a self-propelled harvester or tractor, wherein a driver assistance system (5) is provided which has a memory (6) for storing data, a computing device (7) for processing the data stored in the memory (6) and a display unit (8), wherein the display unit (8) has a display control unit (9) and a user display (10), wherein the computing device (7) transmits display data comprising safety-critical user information to the display control unit (9) for display in a predetermined region (11) of the user display (10), wherein the display control unit (9) determines image data from the display data in a display routine, wherein the display unit (8) displays the image data on the user display (10) and wherein the display unit (8) displays a part of the image data in the predetermined region (11).It is proposed that the display control unit (9) determines a first control value from the part of the image data in the display routine, that the display control unit (9) transmits the first control value to the computing device (7), that the computing device (7) determines a second control value in a control routine based on the safety-critical user information, that the computing device (7) compares the first control value and the second control value in the control routine and thus determines whether the safety-critical information is represented in the image data, and that the computing device (7) performs an emergency routine if the safety-critical information is not represented in the image data.