Construction Machine Display Control with Substitute Settings
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Solution Overview
Problem
Construction machines, especially large work vehicles, face operational disruptions due to faulty switches, leading to increased costs as they must operate continuously regardless of day or night, and immediate restoration is not always possible.
Innovation Solution
A display control device for construction machines that allows for substitute settings, enabling operation through alternative buttons in case of failure, with a mechanism to invalidate substitute settings after a predetermined period to prevent prolonged operation with faults.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the work vehicle is stopped to restore faulty switches, then the reliability of operation is improved, but the productivity decreases due to work process interruption
Solution Approach 1:
The system performs preliminary detection of switch faults and automatically executes substitute operations before the operator needs to intervene. The controller detects abnormal states of operation members and proactively switches to alternative operation members, preventing work interruption and maintaining continuous productivity while ensuring reliable operation.
2Productivity
If substitute settings are allowed indefinitely, then the productivity is maintained, but the reliability decreases due to prolonged operation with faults
Solution Approach 1:
The system implements periodic validation of substitute settings by requiring operator confirmation after predetermined time periods. The controller automatically prompts the operator to confirm whether the substitute operation member should continue to be used, ensuring that prolonged operation with faults is prevented while maintaining productivity through structured intervals of automated operation.
3Adaptability or versatility
If multiple operation members are provided for each function, then the adaptability is improved for fault tolerance, but the device complexity increases
Solution Approach 1:
The system makes operation members universal by enabling any operation member to serve multiple functions through the substitute operation mechanism. When a primary operation member fails, the controller automatically assigns an alternative operation member to perform the same function, allowing the system to maintain full functionality without adding permanent redundant components, thus achieving fault tolerance without proportionally increasing device complexity.
Data Source
AI summary
A display control device for a construction machine includes: a display control unit that controls a display content of a screen including various pieces of information; a first operation member group having a plurality of operation members that receive a plurality of kinds of first operated input, respectively, for the screen; a second operation member group that receives a second operated input for performing a substitute setting in which one of the plurality of kinds of first operated input by one operation member of the plurality of operation members is substituted by an input by another operation member; a third operation member that receives a third operated input for starting the substitute setting; and a setting unit that causes a substitute setting screen for performing the substitute setting in response to the third operated input to be displayed and that decides a content of the substitute setting according to the second operated input on the substitute setting screen, wherein when the first operated input received by the first operation member group corresponds to the content of the substitute setting that is decided by the setting unit, the display control unit controls display of the screen according to the content of the substitute setting.