Wireless Tag Position Determination Using Trained Models
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Solution Overview
Problem
Existing communication systems face challenges in accurately determining the positional relationship of wireless tags with respect to a predetermined range, particularly when the tag or its container protrudes from the range, leading to incorrect phase detection and range identification.
Innovation Solution
A communication apparatus comprising a first determination processing unit, a movement control unit, and a second determination processing unit, which uses a trained model to determine the positional relationship of a wireless tag based on acquired tag data from multiple positions of an antenna, selecting the appropriate model based on the target's arrangement to improve accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the antenna moves to detect the phase of the wireless tag, then the range determination capability is improved, but the determination accuracy deteriorates when the tag or container protrudes from the predetermined range
Solution Approach 1:
The patent divides the determination process into two independent stages: first determining the arrangement of the target (container or article) with respect to the predetermined range, and then determining the positional relationship of the wireless tag based on the acquired tag data and the determined arrangement. This segmentation allows each determination to be performed with appropriate methods, preventing error propagation and improving overall reliability.
Solution Approach 2:
The patent performs preliminary determination of the target's arrangement before determining the wireless tag's position. By first establishing whether the target is within, partially outside, or fully outside the predetermined range, the system prepares the correct context for subsequent position determination, avoiding misclassification even when the tag itself protrudes from the range.
2Device complexity
If the apparatus determines the range based on the aspect of the detected phase, then the determination process is simplified, but the accuracy deteriorates when the wireless tag position causes phase aspects to be similar across different ranges
Solution Approach 1:
The patent separates the determination into two distinct processing steps: arrangement determination (simpler, based on overall target position) and position determination (more accurate, based on tag data and arrangement context). This segmentation maintains process simplicity while improving accuracy by ensuring the correct interpretation of phase aspects in the second step.
Solution Approach 2:
The determined arrangement of the target serves as an intermediary that bridges the simple phase detection and the accurate position determination. This intermediary provides contextual information that disambiguates phase aspects, allowing the system to accurately determine the wireless tag's positional relationship even when phase patterns are similar across different ranges.
3Device complexity
If a single determination method is used for all target arrangements, then the device complexity is reduced, but the determination accuracy deteriorates when targets have different arrangements with respect to the predetermined range
Solution Approach 1:
The patent implements a dynamic determination process where the second determination of the wireless tag's position adapts based on the result of the first determination of the target's arrangement. The system dynamically adjusts the determination approach according to whether the target is within, partially outside, or fully outside the predetermined range, maintaining high reliability across different scenarios without requiring multiple dedicated devices.
Solution Approach 2:
The patent changes the parameters and context of the determination process based on the target's arrangement. By modifying how the phase data is interpreted according to the determined arrangement, the system achieves high determination accuracy for different target configurations using a unified device structure, rather than requiring separate determination methods for each arrangement type.
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 the determination accuracy of the wireless tag's positional relationship with respect to the predetermined range by avoiding misclassification due to protrusion, ensuring correct identification even when the tag is originally within the range but partially or fully outside.
Implementation Method 1
when an antenna receives a radio wave transmitted from a wireless tag attached to an article
Data Source
AI summary
A communication apparatus includes a first determination processing unit that determines, based on measurement of a target including one or more wireless tags by a measurement unit, an arrangement of the target with respect to a predetermined range. A movement control unit controls movement of an antenna. An acquisition unit acquires, based on a radio wave of each of the wireless tags received by the antenna, a plurality of pieces of tag data on the wireless tag at a plurality of relative positions of the antenna. A second determination processing unit determines, based on data output from a trained model in response to input of the plurality of pieces of tag data on the wireless tag to the trained model, a positional relationship of the wireless tag with respect to the predetermined range, the trained model being selected from a plurality of trained models.