Construction Machine Display Guidance for Cutoff Lever States
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Solution Overview
Problem
Conventional display devices on construction machines face challenges in allocating a sufficient number of operation elements due to limited space, particularly when safety operation members like cutoff levers are involved, leading to reduced operability and difficulty in determining appropriate operations.
Innovation Solution
A display device with a display unit and a display control unit that adjusts the display mode of a guidance area based on the operation state of a safety operation member, such as a cutoff lever, to provide clear guidance and enable higher operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display device includes a limited number of operation elements, then the device complexity is reduced, but the adaptability to various functions corresponding to safety operation member operations is insufficient
Solution Approach 1:
The display device enables a single operation element to perform multiple functions by dynamically changing its operation content based on the operation state of the safety operation member. The control unit receives detection signals from the safety operation member and automatically adjusts which function each operation element corresponds to, allowing the same physical button or switch to control different machine functions depending on whether the safety lever is in its initial or operated position.
2Ease of operation
If conventional display devices have limited operation elements, then the ease of manufacture is improved, but the ease of operation when safety operation member is activated is reduced
Solution Approach 1:
The display device implements dynamic reconfiguration of operation element functions based on real-time detection of the safety operation member state. When the safety operation member is operated, the control unit automatically changes the correspondence between operation elements and machine functions, ensuring that only appropriate operations remain accessible. This dynamic adaptation simplifies the operator's decision-making process by automatically disabling irrelevant functions while maintaining full functionality when the safety condition is satisfied.
3Loss of information
If the display device has fixed operation element allocation, then the device complexity is reduced, but the ability to provide clear guidance on required operations when safety operation member is operated is insufficient
Solution Approach 1:
The display device incorporates a feedback mechanism where the control unit continuously monitors the operation state of the safety operation member through detection signals and automatically adjusts the operation content of operation elements accordingly. This closed-loop system ensures that the display device provides accurate, context-appropriate guidance to the operator by enabling only those functions that are appropriate given the current safety state, thereby preventing information confusion while maintaining operational clarity.
Data Source
AI summary
A display device of a construction machine includes a control unit and a display unit. The display unit displays a display screen having the second display area which is a guidance display area for providing guidance on the operation contents with respect to the display device. The control unit functions as a display control unit that controls the display unit to change a display mode of the second display area according to the operation state of a cutoff lever which is a safety operation member of the construction machine.