Construction Machine Tactile Guidance for Noise-Free Operation Teaching
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Solution Overview
Problem
Existing construction machine operation teaching methods interrupt the operator's line of sight and may be difficult to hear due to noise, and can be cumbersome, particularly when using electromagnetic actuators or sound generation devices.
Innovation Solution
A construction machine equipped with a vibration applying device that provides distinct vibration patterns to the operator based on calculated index values, allowing for intuitive operation guidance without visual or auditory distractions, using a vibration applying device mounted on the operation lever and armrests to convey operational feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sound generation device is used for operation teaching, then teaching is provided, but operator may not hear due to construction site noises
Solution Approach 1:
The patent substitutes the sound generation device with a vibration applying device. Instead of relying on acoustic signals that can be masked by construction site noises, the system uses vibration signals transmitted through the operation lever or armrests. This tactile feedback mechanism bypasses the auditory channel and provides operation teaching through touch, which is not affected by environmental noise.
2Ease of operation
If display device is used for operation teaching, then teaching is provided, but operator's line of sight is interrupted
Solution Approach 1:
The patent replaces the display device with a vibration applying device that provides operation teaching through tactile feedback on the operation lever or armrests. This eliminates the need for the operator to shift their line of sight to a display screen, allowing continuous visual monitoring of the work site while receiving operational guidance through vibration patterns.
3Ease of operation
If vibration having first vibration pattern is applied when index value satisfies first condition, then operation guidance is provided, but device complexity increases
Solution Approach 1:
The patent implements a dynamic vibration control system where the vibration pattern (frequency, amplitude, or type) changes based on the calculated index value that represents the deviation from the target operation. The control device dynamically adjusts the vibration characteristics in real-time as the operator performs operations, providing adaptive guidance that responds to the current operational state without requiring overly complex hardware.
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 guidance by providing tactile feedback, reducing operational clumsiness and maintaining the operator's line of sight and hearing, thereby improving the machine's operability and reducing the complexity of operating the construction machine.
Implementation Method 1
a vibration applying device which applies a vibration to a target portion that is at least a part of a portion which is brought into contact with a body of the operator
Data Source
AI summary
A storage part of a construction machine stores an operation target which is set as a target of an operation of the construction machine for moving a specific portion of the construction machine to a target position set as a destination to which the specific portion moves. A calculation part calculates an index value which serves as an index indicating a deviation between the operation target and an actual state of the construction machine. A control device is configured to cause a vibration applying device to perform a first vibration applying operation when the index value satisfies a predetermined first condition, and to cause the vibration applying device to perform a second vibration applying operation when the index value satisfies a predetermined second condition different from the first condition.