Industrial Vehicle RFID Tag Sequence Validation for Missing Tags
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Solution Overview
Problem
Existing industrial vehicle navigation systems using radio frequency identification (RFID) tags do not effectively handle malfunctioning tags, which can disrupt the sequence and functionality of vehicle operations in tag layouts.
Innovation Solution
The system includes a tag reader and reader module that identify individual tags, compare them to a sequence list, and generate a missing tag signal for irregularities, allowing the vehicle controller to adjust operational functions based on the correlation of vehicle functionality with malfunctioning or identified tags, including positional data and user input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the system uses RFID tags for vehicle navigation and operation control, then the vehicle can automatically identify locations and execute functions, but malfunctioning tags can disrupt sequence and functionality
Solution Approach 1:
The system continuously monitors tag identification sequences and compares them against expected sequences. When a discrepancy is detected (such as a missing or malfunctioning tag), the system generates feedback signals to alert operators and can automatically adjust operations to maintain reliability while preserving the automated navigation capability
Solution Approach 2:
The system pre-establishes expected tag sequences and validation rules before operation begins. This preliminary configuration allows the system to proactively detect and respond to malfunctioning tags before they cause operational failures, maintaining reliability while enabling automated control
2Measurement precision
If the system requires all tags to be functional for operation, then navigation accuracy is maintained, but any malfunctioning tag stops vehicle operation
Solution Approach 1:
Instead of requiring all tags to be fully functional, the system performs partial validation by checking sequences incrementally. When a malfunctioning tag is detected, the system can continue operations with reduced functionality or alert operators for replacement, rather than completely stopping production
Solution Approach 2:
The system prepares backup validation methods and alternative navigation approaches in advance. When a tag malfunction occurs, these pre-prepared measures allow the vehicle to maintain navigation accuracy through alternative means, preventing complete operational shutdown
3Reliability
If the system immediately stops operation upon detecting a malfunctioning tag, then navigation errors are prevented, but operational efficiency decreases
Solution Approach 1:
The system dynamically adjusts its response to detected tag malfunctions based on the severity and context. For minor issues, it continues operation with monitoring; for critical failures, it stops navigation but maintains other functions. This dynamic approach prevents navigation errors while minimizing operational downtime
4Reliability
If the system implements comprehensive tag sequence validation, then malfunctioning tags are detected, but system complexity increases
Solution Approach 1:
The validation system is divided into modular components: tag reading modules, sequence comparison modules, and response generation modules. Each module performs a specific function independently, making the overall system easier to implement, maintain, and debug while achieving comprehensive validation
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
This solution enables the industrial vehicle to maintain operational functionality even with malfunctioning tags by correlating vehicle operations with stored data, ensuring continuous operation and reducing the need for immediate tag replacement or repair.
Implementation Method 1
a RF identification reader... When the automatic guided vehicle passes over a tag, the RFID reader reads a code off the tag
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
According to one embodiment of the present disclosure, an industrial vehicle is provided comprising industrial vehicle hardware, tag reader, reader module, user interface, and vehicle controller. The tag reader and reader module cooperate to identify individual sequenced tags along an aisle path of a tag layout in accordance with a sequence list accessible to the reader module. The reader module compares a succession of sequenced tags with at least a portion of the accessible sequence list to determine if the succession of sequenced tags is in sequence along the aisle path in accordance with the sequence list and generates a missing tag signal for a malfunctioning sequenced tag when the comparison of the succession of sequenced tags with the sequence list indicates a sequence irregularity in the plurality of sequenced tags. The reader module then correlates vehicle functionality with the malfunctioning sequenced tag when a missing tag signal is generated.