Work Machine Display Switching Caution Signs
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Solution Overview
Problem
Work machines like motor graders and bulldozers require a state information display that can effectively show caution signs while minimizing the size of the display to maintain lower front visibility for operators, who need to monitor both state information and malfunctions.
Innovation Solution
A state information display system with a controller that prioritizes caution signs by switching them into higher-display areas, ensuring operators are informed of malfunctions while maintaining essential operational information visibility, even with a downsized display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the display size is reduced to maintain lower front visibility, then the visibility for the operator is improved, but the ability to display caution signs and state information becomes insufficient
Solution Approach 1:
The display system dynamically switches between different display modes based on operational state. During traveling, it shows state information in a compact layout. During operation (when blade is lowered), it switches to a mode that prioritizes caution sign visibility, ensuring safety information is prominently displayed while maintaining operational information availability.
Solution Approach 2:
The system uses temporal dimension by switching display content based on machine state. Instead of trying to display all information simultaneously on a small screen, it alternates between showing state information and caution signs based on whether the machine is traveling or operating, effectively using time as an additional dimension to resolve the space constraint.
2Loss of information
If multiple kinds of state information are displayed, then the information completeness is improved, but the display area required increases
Solution Approach 1:
The display is segmented into different functional areas: a first display area for state information and a second display area for caution signs. This segmentation allows the system to present multiple types of information simultaneously in a structured manner, optimizing the use of limited screen space by dedicating specific regions to specific information types.
Solution Approach 2:
The display dynamically adjusts what information is shown in each segment based on machine state. During traveling, the system prioritizes state information display. During operation, it prioritizes caution sign display, thereby providing complete information over time without requiring a large static display area.
3Reliability
If caution signs are prioritized for display, then the safety alert capability is improved, but the display of operational state information may be compromised
Solution Approach 1:
The display is divided into a first display area for state information and a second display area for caution signs. This segmentation ensures that caution signs have a dedicated display space and are not competing with state information for the same screen real estate, thereby maintaining both safety alert reliability and operational information availability simultaneously.
Solution Approach 2:
Different parts of the display have different functions and priorities. The second display area is specifically optimized for caution sign visibility and prominence, while the first display area handles state information. This local differentiation ensures that caution signs receive the visual emphasis they need for safety alerts while state information remains accessible in its designated area.
Data Source
AI summary
A state information display for a work machine displays plural kinds of state information of the machine including first and second state information, and includes: a state information displaying unit defining first and second display areas respectively displaying the first and second state information; and a display controller controlling the entire display including the unit and including: a malfunction information determining unit receiving the plural kinds of state information and determining whether or not the state information includes malfunction information indicating a malfunction of the machine; a first display switching unit switching the first state information in the first display area with a caution sign for reporting the malfunction, when the unit determines the malfunction information is received; and a second display switching unit switching the second state information in the second display area with the first state information, when the first state information is switched with the caution sign.