Synthetic Audio Feedback for Precise Work Implement Control
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Solution Overview
Problem
Modern motor graders with electromechanical controls and improved sound isolation in the cabin lack perceptible auditory and vibrational feedback from hydraulic valves, making fine control of the blade difficult, leading to reduced situational awareness and unintentional control inputs.
Innovation Solution
A method using a hardware processor in a controller to receive operational parameters from external components of the work implement, execute a sound-generation algorithm to convert these parameters into audio, and output the audio to the operator through speakers in the cabin, providing synthetic audio feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electromechanical controls and sound isolation are introduced in the cabin, then operator comfort and control precision are improved, but auditory and vibrational feedback from hydraulic components is lost
Solution Approach 1:
The system generates synthetic audio feedback that mimics the sounds of hydraulic components based on real-time operational parameters. This feedback is presented to the operator through the audio output device, restoring the tactile and auditory information that was lost due to sound isolation, thereby maintaining situational awareness and control precision.
Solution Approach 2:
The patent replaces the natural mechanical acoustic feedback path with an electronic system that captures operational data, processes it through algorithms, and generates synthetic audio signals. This substitution allows the preservation of feedback information despite physical sound isolation barriers.
2Measurement precision
If visual feedback is used for blade control, then fine control capability is maintained, but operator situational awareness is reduced
Solution Approach 1:
The system adds an auditory dimension to the control feedback loop. Instead of relying solely on visual information, the operator receives audio feedback that provides tactile-like information about system operation, creating a multi-sensory feedback environment that enhances both control precision and situational awareness.
3Ease of operation
If sound isolation is improved in the cabin, then operator comfort is increased, but perceptibility of hydraulic component sounds is decreased
Solution Approach 1:
The system introduces an intermediary audio processing layer that captures operational parameters, converts them into representative sounds, and presents them to the operator. This intermediary system bridges the gap between the isolated cabin environment and the need for component sound detection.
Data Source
AI summary
With the introduction of electromechanical input devices and sound-proofed cabins, it has become difficult for operators in a cabin to receive audio feedback from a work implement of a work machine. This hinders fine control of the work implement. Accordingly, disclosed embodiments synthetically re-introduce audio feedback into the cabin. In particular, a controller monitors operational parameters associated with movement of the work implement, executes a sound-generation algorithm to convert those operational parameters into audio (e.g., with different audio layers associated with different components of the work implement), and outputs the audio to the operator (e.g., via at least one speaker) in the cabin.