Work Vehicle Display Switching Screen and Settings via Press Duration
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Solution Overview
Problem
Existing work vehicle information displaying systems are prone to accidental changes in setting information due to the complexity of operation, particularly when switching between screens and changing settings, leading to potential false settings.
Innovation Solution
A configuration that utilizes a single push switch with varying press durations to differentiate between switching screens and changing settings, allowing for two distinct operations without the need for separate switches, thereby reducing the risk of accidental changes by requiring conscious input for setting modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single push switch is used for both screen switching and setting changing, then the device complexity is reduced, but the reliability decreases due to potential false settings
Solution Approach 1:
The patent applies parameter changes by utilizing different press durations (short press vs. long press) of the same push switch to differentiate between screen switching and setting changing operations. This allows a single switch to perform multiple functions while maintaining operational reliability through distinct input patterns.
Solution Approach 2:
The patent employs periodic action by using time-based differentiation where the control unit detects whether a press operation is short or long duration. This temporal distinction enables the system to reliably differentiate between different operational intents using the same physical input device.
2Reliability
If multiple switches are provided for different operations, then the reliability of setting changes is improved, but the device complexity increases
Solution Approach 1:
The patent implements universality by designing a single push switch that can perform multiple functions: screen switching through short presses and setting changing through long presses. This multi-functional design reduces the total number of switches while maintaining operational reliability through context-aware control logic.
Solution Approach 2:
The patent merges the functions of multiple switches into a single push switch by combining screen switching and setting changing operations into one device. The control unit distinguishes between different operations based on press duration, effectively combining multiple switch functions into a unified input mechanism.
3Reliability
If the operation mode is changed to prevent false settings, then the reliability is improved, but the ease of operation deteriorates due to complex input requirements
Solution Approach 1:
The patent changes the operational parameter from binary (press/not press) to temporal (short press/long press), allowing the system to distinguish between different operations. This maintains ease of operation by using the same simple pressing action while improving reliability through duration-based differentiation.
Solution Approach 2:
The patent introduces dynamics by making the switch's function dependent on the duration of the press operation. The control unit dynamically interprets the input based on how long the switch is held, allowing the same physical action to trigger different functions based on temporal characteristics.
Data Source
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AI summary
A work vehicle is disclosed with an information displaying device (50) preventing set information corresponding to a setting screen displayed on a display (36) from being erroneously changed even while permitting an operation for switching to and displaying one among a plurality of set screens on the display (36). A setting information processing unit (P) of the information displaying device (50) includes setting screen displaying means (54) for switching the setting screen by the input of a first operation information item and displaying same in a transition display mode, and setting information changing means (55) for performing a process in an information change mode for permitting a change to the set information corresponding to the setting screen, by the input of a second operation information item. When it is determined that the second operation information item is inputted in the information change mode, a process for restoring the transition display mode from the information change mode is performed.