Touchscreen Operating Mask for Construction Machines
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Solution Overview
Problem
Existing touch-sensitive displays for construction machines lack feedback and tactile guidance, making it difficult for operators to navigate and input instructions effectively, as they must constantly look at the screen and risk inadvertent actuation of wrong areas.
Innovation Solution
An operating arrangement with a detachable operating mask featuring localization markers and tactile structures that allow operators to locate input areas without visual reference, providing feedback and enabling 'blind' operation, and can be easily re-configured with software updates by exchanging masks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a touch-sensitive display is used for inputting operating instructions, then the operating arrangement can be adapted by software update and only one universal operating arrangement needs to be produced, but the operator receives no tactile feedback and must constantly look at the display to find input areas
Solution Approach 1:
An operating mask with tactile localization markers is introduced as an intermediary between the operator and the touch-sensitive display. The mask includes raised markers that provide tactile guidance to input areas without interfering with the touch-sensitive display's functionality, allowing operators to locate and actuate input areas by touch alone.
Solution Approach 2:
The operating mask applies local tactile quality to specific areas of the display by placing localization markers at precise positions corresponding to input areas. This creates differentiated tactile feedback at specific locations while maintaining the overall transparency or operability of the mask across the display surface.
2Ease of manufacture
If a touch-sensitive display is used for setting operating parameters, then no physical exchange of operating elements is required when machine configuration changes, but the operator cannot rely on sense of touch and must look at the display during operation
Solution Approach 1:
The operating mask serves as a mediator that bridges the gap between the software-adaptable display and the operator's need for tactile guidance. It enables rapid location of input areas through tactile markers, reducing the time operators spend searching for and inputting data while preserving the software-updatable nature of the underlying display.
3Area of stationary object
If a touch-sensitive display without tactile markers is used, then the display surface is clear and unobstructed, but the operator risks inadvertent actuation of wrong areas and cannot monitor operation and environment effectively
Solution Approach 1:
The operating mask maintains overall clarity of the display surface while introducing localized tactile markers at specific input areas. These markers provide discrete tactile cues that guide operators to the correct input areas without obscuring the display or creating continuous visual obstruction, thereby maintaining both clarity and input accuracy.
Data Source
AI summary
An operating arrangement for a construction machine comprises an operating device which comprises a touch-sensitive display for inputting operating instructions by an operator, and an operating mask with localization markers. The operating device comprises at least a first alignment feature for aligning the operating mask on the operating device in a pre-defined operating position relative to the operating device. The operating mask is detachably attached to the operating device in the operating position, wherein the operating mask at least partially covers the touch-sensitive display, and wherein the location markers of the operating mask lie over specified areas of the display and facilitate locating the specified areas of the display for inputting instructions.