Crane Remote Control Terminal with Azimuth Reference Alignment
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Solution Overview
Problem
Remote operation of work vehicles, such as cranes, often results in erroneous manipulation due to varying relative positional relations between the work apparatus and the remote operation terminal, making it difficult to maintain the correct movement direction, especially in large-size cranes or obstructed areas where signal reception is compromised.
Innovation Solution
A remote operation terminal with an azimuth detection section and a control apparatus that communicates with the terminal to control the work vehicle's movement, displaying the detected azimuth and preventing changes to the reference value during manipulation, ensuring the operator maintains the correct movement direction by using the azimuth as a reference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a laser beam reference signal is used to align coordinate systems, then the movement direction of the manipulation tool coincides with the movement direction of the work apparatus, but the reception section cannot receive the reference signal in obstructed areas or when the distance is large
Solution Approach 1:
The patent introduces an azimuth detection section as an intermediary device that detects the azimuth of the work apparatus and transmits this information to the remote operation terminal. This mediator allows the system to maintain coordinate alignment without requiring direct line-of-sight signal transmission between the work apparatus and reception section, thereby resolving the contradiction between ease of operation and signal reception reliability.
2Adaptability or versatility
If the reception section is placed remotely from the work apparatus, then it can cover larger work areas, but the reception section becomes unable to receive reference signals in obstructed areas
Solution Approach 1:
The patent replaces the optical/mechanical laser beam transmission system with an electronic information transmission system. Instead of using a laser beam that requires line-of-sight propagation, the system uses electronic signals to transmit azimuth information, which can be received reliably even in obstructed areas or over large distances, thus maintaining work area coverage while preventing signal loss.
3Ease of operation
If the manipulation tool's movement direction is aligned with the work apparatus direction, then operation is simplified, but erroneous manipulation occurs when the relative positional relation varies
Solution Approach 1:
The patent implements a feedback mechanism where the azimuth detection section continuously monitors the azimuth of the work apparatus and transmits this information to the remote operation terminal. The terminal uses this feedback to dynamically adjust the coordinate system alignment, ensuring that the manipulation tool's movement direction accurately reflects the work apparatus direction even when relative positional relations vary, thereby preventing erroneous manipulation while maintaining operational simplicity.
Data Source
AI summary
The purpose of the present invention is to provide: a remote control terminal which can perform a remote control on a working vehicle easily and simply; and a working vehicle provided with a remote control terminal. The present invention is provided with: a vehicle-side azimuth sensor (29) which detects the azimuth around a crane device (6); a remote control terminal (32) having a hung cargo movement control tool which is a first control part that remotely controls the crane device (6), and a reference change control tool (34) which is a second control tool that sets a reference for the azimuth in which the crane device (6) operates according to a control of the hung cargo movement control tool (35); and a control device (31) which is configured to be able to communicate with the remote control terminal (32) and controls the operation of the crane device (6), wherein the control device (31) causes the crane device (6) to operate in the azimuth in which the crane device (6) operates, when acquiring, from the remote control terminal (32), a signal of the azimuth in which the crane device (6) operates according to a control of the hung cargo movement control tool (35) and which is calculated on the basis of a set value of the reference change control tool (34).