Work Machine Terminal Input Locking by Operator Room Position
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Solution Overview
Problem
Existing input control methods for work machines, such as hydraulic excavators, fail to prevent erroneous operations when using information terminals like tablets, which are not locked by the hydraulic lock switch, leading to decreased work efficiency and potential operational errors.
Innovation Solution
An information input system for work machines that includes a controller and an information terminal, where input from the terminal is disabled when located at a predetermined position within the operation room, maintaining the machine's operability and preventing erroneous operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If input from information terminal is locked when work machine is operable, then erroneous operation is prevented, but ability to perform settings from around the machine is lost
Solution Approach 1:
The patent applies local quality by differentiating the locking behavior based on the spatial location of the information terminal. When the terminal is detected within a predetermined position (e.g., within the operation room), input locking is activated. When the terminal is outside this position, input locking is deactivated, allowing settings to be performed from around the machine. This location-based differentiation resolves the contradiction by applying the protective locking mechanism only where necessary.
2Ease of operation
If touch panel is used for input, then operation simplicity is improved, but erroneous touching during machine operation increases
Solution Approach 1:
The patent implements a dynamic input locking mechanism that automatically activates or deactivates based on the operational state of the work machine and the position of the information terminal. When the machine is operable and the terminal is within the operation room, the touch panel input is locked. When the machine is not operable or the terminal is outside the operation room, input is enabled. This dynamic adaptation resolves the contradiction between operational simplicity and erroneous operation prevention.
Data Source
AI summary
An object of the present invention is to provide an information input system for a work machine capable of performing various kinds of settings of a work machine by using an information terminal while preventing an erroneous operation of the work machine. Therefore, in an information input system for a work machine including: a controller that is mounted on the work machine; and an information terminal that inputs information to the controller via communication, an input of the information from the information terminal to the controller is disabled in a case where the information terminal is located at a predetermined position in an operation room of the work machine.