Work Machine Display Screen Continuity During Actuator Startup
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Solution Overview
Problem
The operational control of work machines has become complex, necessitating a simplification of setting operational properties through a display apparatus.
Innovation Solution
A display system for work machines comprising an actuator, a switch apparatus, a display apparatus, and a controller, where the display apparatus can switch between setting and information screens, and the controller ensures the setting screen remains displayed when the switch apparatus transitions from a shut-off to a supply state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the display apparatus switches to an information display screen when the actuator is in the shut-off state, then the operator can view information, but the setting screen is lost when transitioning to the supply state requiring repeated state transitions
Solution Approach 1:
The system performs preliminary action by detecting when the operator enters the setting screen during the shut-off state and preserving this state information. When transitioning to the supply state, the controller automatically restores the setting screen without requiring the operator to re-navigate through menus, thus preventing information loss and saving time.
Solution Approach 2:
The controller continuously monitors the display apparatus state and switch apparatus state, providing feedback by automatically restoring the setting screen when the supply state is activated. This feedback mechanism ensures that the operator's previous navigation choices are remembered and reinstated, eliminating the need for repeated state transitions.
2Adaptability or versatility
If the display apparatus provides comprehensive operational settings, then the functionality is enhanced, but the operation complexity increases
Solution Approach 1:
The system implements self-service by automatically detecting which screen the operator was viewing before state transitions and autonomously restoring that screen. This eliminates the need for the operator to manually navigate through complex menu structures to access settings again, thereby simplifying operation while maintaining comprehensive functionality.
Solution Approach 2:
The controller performs preliminary action by memorizing the operator's navigation state during the shut-off period. When the supply state is activated, the system proactively restores the appropriate screen, preventing the operator from having to re-traverse complex menu paths and thus reducing operational complexity.
Data Source
AI summary
An actuator drives a hydraulic excavator. A switch apparatus makes a switch between a supply state in which the actuator can be driven and a shut-off state in which the actuator cannot be driven. A display apparatus is capable of switching between displaying a third screen (setting screen) for setting an operational property of the actuator and displaying an information display screen different from the third screen, in the shut-off state. A controller performs control to cause the display apparatus to continue displaying the third screen in both the shut-off state and the supply state, when the switch apparatus switches the shut-off state to the supply state.