Vehicle Mirror Display Force Detection and Protection
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Solution Overview
Problem
Existing head-up display devices for motor vehicles lack reliable mechanisms to detect incorrect operation, which can lead to damage of the display element and drive apparatus, especially when moving between storage and use positions.
Innovation Solution
Incorporating a sensor apparatus within the mirror apparatus to detect forces applied to the display element, outputting a control signal if the force exceeds a threshold, and automatically moving the mirror apparatus to a safe position to prevent damage, while also allowing for detection of sticking or obstruction during movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a drive apparatus is provided to move the display element between storage and use positions, then the display device becomes more versatile and user-friendly, but the risk of incorrect operation and potential damage to the display element and drive apparatus increases
Solution Approach 1:
A sensor apparatus is integrated into the mirror apparatus to detect forces applied to the display element during movement between storage and use positions. The sensor provides real-time feedback about the force magnitude, enabling the system to detect incorrect operation attempts (such as forcing the display element beyond its intended range) and trigger protective responses to prevent damage to the display element and drive apparatus.
Solution Approach 2:
The sensor apparatus is configured to detect forces before damage occurs. By continuously monitoring the force applied to the display element during movement, the system can identify incorrect operation attempts in advance and activate protective measures (such as stopping the drive apparatus or alerting the user) before the display element or drive apparatus suffers damage.
2Device complexity
If the display element is made movable between storage and use positions, then the device complexity is reduced by integrating the display element into the mirror apparatus, but the difficulty of detecting and measuring incorrect operation increases
Solution Approach 1:
The sensor apparatus provides continuous feedback about forces applied to the display element during movement. This feedback mechanism enables the system to automatically detect incorrect operation (such as excessive force or abnormal resistance) without requiring complex external monitoring systems, thus resolving the detection difficulty while maintaining integration benefits.
Solution Approach 2:
The mirror apparatus performs self-diagnosis through the integrated sensor apparatus that monitors forces on the display element. The system automatically detects incorrect operation and can trigger protective responses without external intervention, enabling the integrated device to monitor and protect itself against damage.
3Device complexity
If no force detection mechanism is provided, then the device complexity remains low, but the protection against damage to the display element and drive apparatus is insufficient
Solution Approach 1:
The sensor apparatus continuously monitors forces applied to the display element and provides feedback to the control system. When the detected force exceeds a predetermined threshold indicating potential damage, the system triggers protective responses such as stopping the drive apparatus or alerting the user, thereby preventing damage while maintaining relatively simple device architecture.
Solution Approach 2:
The force detection mechanism provides advance warning before damage occurs. By detecting abnormal forces early in the movement process, the system can activate protective measures in advance to prevent damage to the display element and drive apparatus, rather than reacting after damage has already occurred.
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
The solution ensures reliable detection of incorrect operation and prevents damage to the display element and drive apparatus by automatically moving the mirror apparatus to a safe position, enhancing operational safety and reducing the risk of mechanical failure.
Implementation Method 1
a sensor apparatus (22) which is configured to detect, in the position of use of the mirror apparatus (13), a force applied to the display element (7)
Data Source
AI summary
The invention relates to a display device (2) for a motor vehicle (1) having a mirror apparatus (13) which has a display element (7) with a semi-transparent mirror surface, and having a drive apparatus (15) by means of which the mirror apparatus (13) can be moved between a storage position and a position of use, wherein the mirror apparatus (13) has a sensor apparatus (22) which is configured to detect, in the position of use of the mirror apparatus (13), a force applied to the display element (7).