Dual-Wheel Haptic Input for Multi-Implement Monitoring
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Solution Overview
Problem
Operators of agricultural machines face challenges in simultaneously monitoring and controlling multiple implements due to visual complexity, especially when they are attached at opposite ends, leading to potential operational errors.
Innovation Solution
A dual-wheel input device with a lower and upper wheel, coupled by a common actuator, provides force feedback through haptic sensations to help operators monitor and control agricultural machine implements effectively, using a single actuator to generate distinct feedback for each wheel based on the intended implement control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If visual monitoring is used to control multiple implements, then the operator can see the implements through windows or screens, but the visual monitoring task becomes complicated when controlling two implements simultaneously
Solution Approach 1:
The patent applies force feedback through a common actuator connected to both wheels, providing haptic information about implement status directly to the operator's hands. This tactile feedback loop allows the operator to monitor multiple implements simultaneously without visual distraction, resolving the contradiction between monitoring accuracy and monitoring complexity.
Solution Approach 2:
The patent replaces visual monitoring with tactile sensing through force feedback. Instead of relying on the operator's eyes to monitor implement positions through windows or screens, the system uses mechanical force feedback transmitted through the wheel actuation mechanism, substituting a visual system with a tactile one that can process multiple parameters simultaneously.
2Ease of operation
If separate actuators are used for each wheel, then each wheel can provide independent force feedback, but the device complexity increases
Solution Approach 1:
The common actuator serves multiple functions: it provides force feedback for both wheels, transmits haptic information about multiple implements, and enables differential feedback control. By making the actuator universal rather than dedicated to a single wheel, the system achieves complex haptic feedback functionality without increasing component quantity, resolving the contradiction between ease of operation and device complexity.
Solution Approach 2:
The patent merges the actuation mechanisms for both wheels into a single common actuator. This consolidation reduces the number of components while maintaining the ability to provide differentiated force feedback to each wheel through intelligent control algorithms that distribute the feedback signals appropriately.
3Productivity
If the operator controls two implements simultaneously, then both implements can be adjusted, but the visual monitoring task becomes complicated leading to potential operational errors
Solution Approach 1:
The force feedback system provides continuous tactile information about the status and position of multiple implements directly to the operator's hands, enabling simultaneous control without visual distraction. This real-time haptic feedback maintains operational accuracy while allowing efficient control of multiple implements, resolving the contradiction between productivity and reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances operator control by allowing tactile differentiation between wheels, reducing the risk of operational errors and improving the monitoring of multiple implements through haptic feedback, thereby enhancing operational precision and safety.
Implementation Method 1
The actuator may provide a force feedback to the lower wheel and/or to the upper wheel. The force feedback may be a haptic feedback such as a ripple, a vibration and/or a counter torque (resistance) acting on the lower and/or upper wheel.
Data Source
AI summary
An input device for controlling an agricultural machine has a lower wheel and an upper wheel coupled with a common actuator for providing a force feedback to the lower wheel and the upper wheel. According to a method for controlling the force feedback, a manual contact of the lower wheel or the upper wheel can be detected, and the actuator can be controlled to provide a first force feedback if the lower wheel is manually contacted and a second force feedback if the upper wheel is manually contacted.