Modular Joystick System for Work Machine Tool Adaptation
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Solution Overview
Problem
Current operator interfaces for work machines, such as joysticks, are not adaptable to a wide range of work tools and operator preferences, requiring complicated and labor-intensive retrofitting and swapping of control bases and joysticks, which is costly and inefficient.
Innovation Solution
A modular joystick system with interchangeable joysticks and a base controller that can communicate control signals electronically, allowing for easy switching between different work tools and configurations, enabling the work machine to operate various tools with standardized mechanical and electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If standard configuration joysticks are used to accommodate a range of alternative work tools, then the work machine can operate multiple tools, but the operator interface is not optimally suited for all work tools and complicated harness adapters are necessary
Solution Approach 1:
The joystick control system is divided into separate modular components: the base unit mounted on the machine and interchangeable joystick handles. Each joystick handle is a self-contained module with its own electronic controller and harness, allowing independent selection and replacement without affecting the base system or other components.
Solution Approach 2:
A universal base unit with standardized mounting and electrical connections is designed to work with multiple different joystick handle configurations. The base unit provides common functions while the interchangeable handles provide tool-specific control configurations, creating a multi-functional control system.
2Adaptability or versatility
If control bases and joysticks are swapped on a completed machine, then the operator interface can be adapted to different preferences, but the process is labor intensive and expensive
Solution Approach 1:
The control interface is segmented into easily separable modules with standardized connection points. The joystick handles can be quickly detached and replaced by operators without requiring technical expertise, tool removal, or complex wiring changes, significantly reducing swapping time and labor costs.
Solution Approach 2:
Multiple joystick handles are pre-configured with different control configurations optimized for various work tools and operator preferences. These pre-configured modules are ready for immediate installation, eliminating the need for on-site customization or programming during the swapping process.
3Adaptability or versatility
If complicated harness adapters are used to retrofit current joysticks, then compatibility with different work tools is achieved, but the adaptation process becomes complex and costly
Solution Approach 1:
The electrical harness and electronic controller are extracted from the traditional integrated joystick design and relocated to the interchangeable handle modules. This extraction eliminates the need for complex adapter harnesses, as each handle comes with its own integrated wiring and control electronics already configured for specific tool compatibility.
Solution Approach 2:
The universal base unit serves as an intermediary between the machine's hydraulic/electrical systems and the various joystick handle configurations. It provides standardized connection interfaces that simplify the integration process, eliminating the need for complex adapter harnesses between different joystick types and the machine systems.
Data Source
AI summary
Systems and methods of adapting a work machine to operate a plurality of interchangeable work tools. Systems according to the disclosure employ interchangeable joystick controllers, each having different configurations optimized to the operator and/or the particular operating parameters and/or requirements of the selected work tool. Each of the joysticks has a standardized mechanical and/or electrical connection for attachment to the work machine via a standardized base. The base receives control communications from the selected/paired joystick and is configured to adapt the control communications to a standardized signal format such that the work machine operates the work tool according to inputs from the selected joystick.