Working Vehicle Attachment Recognition Using Provisional NFC Selection
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Solution Overview
Problem
Existing systems for attaching and identifying attachments on working vehicles face challenges such as vibration-induced interference with wireless signals and metal obstructions, leading to improper attachment recognition and operation.
Innovation Solution
A working vehicle system with a hitch and controller that uses a receiver to detect wireless signals from transmitters on attachments, selectively latching based on signal conditions, and a controller that provisions and definitively selects identification information to ensure proper attachment recognition and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If wireless signals are transmitted from attachment to working vehicle for identification, then attachment identification capability is improved, but signal reception reliability deteriorates due to vibration and metal obstructions
Solution Approach 1:
The system performs preliminary action by provisionally selecting attachment identification information before the latching mechanism is fully engaged. The controller provisionally selects identification information from received wireless signals during the attachment approach phase, then confirms the selection after latching. This preliminary selection process ensures that identification is established even if signal reception is interrupted during the critical latching moment.
Solution Approach 2:
The system applies beforehand cushioning by maintaining a buffer period for signal reception after the latching mechanism engages. The controller continues to monitor for wireless signals for a predetermined time after latching, allowing for signal recovery even if metal obstructions or vibrations temporarily blocked transmission during the latching action. This time buffer compensates for the unreliable signal period.
2Speed
If the working vehicle moves forward or adjusts the boom to attach the attachment, then attachment speed is improved, but signal transmission stability deteriorates due to vibration and metal interference
Solution Approach 1:
The system performs preliminary action by provisionally selecting attachment identification information before the latching mechanism is fully engaged. The controller provisionally selects identification information from received wireless signals during the attachment approach phase, then confirms the selection after latching. This preliminary selection process ensures that identification is established even if signal reception is interrupted during the critical latching moment.
Solution Approach 2:
The system uses feedback by continuously monitoring wireless signals from the attachment throughout the attachment process. The controller receives identification information via wireless transmission and uses this feedback to confirm proper attachment recognition. The feedback loop ensures that the system can verify attachment status despite vibrations and metal interference during the dynamic attachment process.
3Measurement precision
If the system waits for complete signal reception before attachment, then identification accuracy is improved, but attachment time increases
Solution Approach 1:
The system performs preliminary action by provisionally selecting attachment identification information before the latching mechanism is fully engaged. The controller provisionally selects identification information from received wireless signals during the attachment approach phase, then confirms the selection after latching. This preliminary selection process ensures that identification is established even if signal reception is interrupted during the critical latching moment.
Solution Approach 2:
The system applies beforehand cushioning by maintaining a buffer period for signal reception after the latching mechanism engages. The controller continues to monitor for wireless signals for a predetermined time after latching, allowing for signal recovery even if metal obstructions or vibrations temporarily blocked transmission during the latching action. This time buffer compensates for the unreliable signal period.
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
Ensures accurate and reliable attachment identification and operation by mitigating signal interference and metal obstructions, enabling seamless attachment changes and efficient vehicle operation.
Implementation Method 1
a receiver to receive one or more wireless signals which are: (i) transmitted periodically from one or more transmitters in or on one or more of the attachments, (ii) include respective one or more pieces of identification information relating to the one or more attachments, and (iii) are compliant with a near field communication standard
Data Source
AI summary
A controller of a working vehicle is configured or programmed to, while a latching mechanism is in an unlatching state in which the latching mechanism does not latch an attachment and at least one of a traveling device or a working device is about to take action or is in action, select wireless signal(s) satisfying a first condition from wireless signal(s) transmitted from transmitter(s) in or on attachment(s) and received by a receiver, and provisionally select piece(s) of identification information included in the selected wireless signal(s), and once the latching mechanism has entered a latching state in which the latching mechanism latches the attachment, definitively select a piece of identification information which satisfies a second condition from the provisionally selected piece(s) of identification information, and start a predetermined process based on the definitively selected piece of identification information.