Crane Remote Terminal Reference Switching for Stable Load Direction
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Solution Overview
Problem
Existing remote operation terminals for work vehicles, such as cranes, require operators to constantly adjust their orientation to maintain the correct movement direction, leading to complex and error-prone operations due to the need to lock and unlock deviation angles relative to the work apparatus' reference absolute azimuth.
Innovation Solution
A remote operation terminal with a control section that calculates and transmits the movement direction of the work apparatus based on set values from manipulation sections, disabling changes during operation to prevent erroneous movements and simplify operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a movement direction lock switch is used to lock a deviation angle with respect to the terminal reference absolute azimuth, then the movement direction of the work machine can be held stable, but the operator cannot change the movement direction during manipulation and must constantly grasp the reference absolute azimuth, complicating operation
Solution Approach 1:
The patent applies dynamics by making the reference absolute azimuth changeable during operation. The control section updates the reference absolute azimuth based on the current orientation of the remote operation terminal, allowing the system to adapt dynamically to orientation changes while maintaining movement direction stability through continuous recalculation of the deviation angle relative to the updated reference.
Solution Approach 2:
The patent changes the parameter of reference absolute azimuth from a fixed value to a dynamically updated value. The control section recalculates the reference absolute azimuth based on the terminal's current orientation, enabling the operator to change movement direction by simply reorienting the terminal without manually adjusting lock switches or grasping reference azimuth values.
2Measurement precision
If the remote operation terminal requires constant orientation adjustment to maintain correct movement direction, then accurate control can be achieved, but operation becomes complex and error-prone
Solution Approach 1:
The system performs self-service by automatically calculating and updating the reference absolute azimuth based on the terminal's own orientation. The control section uses the terminal's current orientation to recalculate the reference frame, eliminating the need for the operator to manually adjust orientation or grasp reference azimuth values, thereby simplifying operation while maintaining accuracy.
Solution Approach 2:
The patent implements feedback by continuously monitoring the terminal's orientation and using this information to update the reference absolute azimuth. The control section receives orientation information and recalculates the reference frame accordingly, creating a closed-loop system that automatically compensates for orientation changes and maintains movement direction accuracy without operator intervention.
Data Source
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AI summary
A problem to be addressed by the present invention is to provide a remote operation terminal and work vehicle comprising said remote operation terminal for enabling easy and straightforward carrying out of a remote operation of a work device. Provided is a remote operation terminal (32) of a crane device (6), said terminal comprising: a terminal-side control device (42) being a control part for controlling an operation of the remote operation terminal (32) and configured to enable communication with a control device (31) of the crane device (6); a load movement operation instrument (35) being a first operation part for remotely operating the crane device (6); and a reference change operation instrument (34) being a second operation part for setting a reference of an operation direction of the crane device (6) operated by the load movement operation instrument (35). The terminal-side control device (42): computes the operation direction of the crane device (6) with regard to the operation of the load movement operation instrument (35) on the basis of the setting value of the reference change operation instrument (34), and transmits said direction to the control device (31); and prevents a change of the setting value while the load movement operation instrument (35) is being operated.