Working Vehicle Attachment Identification Using Hydraulic Pressure
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Solution Overview
Problem
Existing systems for identifying attachments on working vehicles face inaccuracies due to environmental factors, leading to potential misidentification.
Innovation Solution
A working vehicle system that utilizes hydraulic fluid pressure to accurately identify attachments, combined with near-field communication and user input, to enhance attachment identification accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If attachment identification is based on acceleration signal comparison and NFC/Bluetooth communication, then the system can identify attachments automatically, but the identification accuracy deteriorates due to environmental factors
Solution Approach 1:
The patent changes the identification parameter from acceleration signals to hydraulic fluid pressure. The controller identifies the attachment by detecting the pressure of hydraulic fluid supplied to the hydraulic actuator when the attachment is lifted off the ground, which directly reflects the attachment's weight and center of gravity characteristics, providing more accurate identification than acceleration signals.
Solution Approach 2:
The patent introduces hydraulic fluid pressure as an intermediary parameter to indirectly measure attachment characteristics. Instead of directly measuring attachment properties, the system uses the hydraulic pressure required to lift the attachment as a mediator that conveys information about the attachment's weight and balance, enabling accurate identification.
2Adaptability or versatility
If multiple identification methods (acceleration comparison, NFC, Bluetooth) are used, then the system can identify attachments in various conditions, but the system complexity increases
Solution Approach 1:
The patent extracts and eliminates the complex multi-sensor identification system (acceleration sensors, NFC modules, Bluetooth modules, and their associated processing logic) and replaces it with a simple hydraulic pressure-based identification system. This extraction removes unnecessary complexity while maintaining identification functionality.
Solution Approach 2:
The hydraulic actuator and pressure sensing system serve multiple functions: they not only perform the primary function of lifting the attachment but also simultaneously provide attachment identification through pressure detection. This multi-functionality eliminates the need for separate identification hardware, simplifying the overall system.
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
Improves the accuracy of identifying attachments by using hydraulic fluid pressure and near-field communication, ensuring precise attachment recognition and operation.
Implementation Method 1
the lifter is operable to be driven by at least one hydraulic actuator to raise or lower the linkage
Implementation Method 2
the controller is configured or programmed to select the identification information of the attachment attached to the linkage based on a pressure of hydraulic fluid supplied to the at least one hydraulic actuator
Implementation Method 3
a first communication unit (tool module) including a first acceleration sensor is provided on an attachment... a second communication unit (receiving module) including a second acceleration sensor is provided at the quick changer
Data Source
AI summary
A working vehicle includes a machine body, a lifter on the machine body, a linkage to attach and detach an attachment thereto and therefrom, the linkage being supported by the lifter such that the linkage is raisable and lowerable by the lifter, and a controller configured or programmed to select identification information of the attachment attached to the linkage and start a predetermined process based on the selected identification information. The lifter is operable to be driven by at least one hydraulic actuator to raise or lower the linkage. The controller is configured or programmed to select the identification information of the attachment attached to the linkage based on a pressure of hydraulic fluid supplied to the at least one hydraulic actuator, the pressure being a pressure of hydraulic fluid supplied when the attachment is caused to be out of contact with a contact surface by the lifter.