Antenna Region Segmentation for Wireless Tag Passage Detection
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Solution Overview
Problem
Existing wireless tag passing determination systems require multiple tag readers to be arranged along a conveyance passage, increasing costs and limiting deployment flexibility due to the need for each tag reader to correspond to a communication area, which can be impractical in certain environments.
Innovation Solution
A wireless tag passing determination apparatus that uses an antenna providing multiple communicable regions and a communication disabled region alternately arranged around a passing determination point, allowing the tag reader to determine passage based on a pattern of presence or absence of reading over time, reducing the need for multiple tag readers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple tag readers are arranged along the conveyance passage to determine wireless tag passage, then passage detection accuracy is improved, but system cost increases and deployment flexibility decreases
Solution Approach 1:
The patent divides the passage into multiple communicable regions along the longitudinal direction, with each region monitored by a single tag reader. The antenna provides overlapping coverage across regions, allowing one tag reader to detect tags in multiple regions sequentially as they pass through, thereby reducing the need for multiple readers while maintaining detection accuracy
Solution Approach 2:
A single tag reader is designed to perform multiple functions by detecting wireless tags across multiple communicable regions sequentially. The tag reader serves all regions along the passage rather than being dedicated to a single region, reducing the total number of readers needed while maintaining comprehensive passage detection
2Measurement precision
If multiple tag readers are arranged along the conveyance passage to determine wireless tag passage, then passage detection accuracy is improved, but deployment flexibility decreases
Solution Approach 1:
The passage is segmented into multiple communicable regions that can be monitored by fewer tag readers. This segmentation allows flexible deployment where one tag reader can cover multiple regions, adapting to various passage configurations and environmental constraints without requiring a reader for every single region
Solution Approach 2:
The antenna provides overlapping coverage in the longitudinal direction of the passage, creating a multi-dimensional coverage pattern. This allows a single tag reader to effectively monitor multiple regions along the passage length, providing deployment flexibility while maintaining detection accuracy
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 configuration enables accurate determination of wireless tag passage with fewer tag readers, reducing system costs and enhancing deployment flexibility by eliminating the need for each tag reader to identify the specific region the tag is in, while maintaining effective passage detection.
Implementation Method 1
an antenna 11 that provides multiple communicable regions C1, C2 and a communication disabled region N
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A wireless tag passing determination apparatus includes: an antenna (11) that provides multiple communicable regions and a communication disabled region, the communicable regions being arranged alternately with the communication disabled region, such that the communicable regions includes both sides of a passing determination point in a longitudinal direction of a passage in which passing of a wireless tag is determined; a tag reader (10) that determines whether to read a signal transmitted by the wireless tag, based on a signal representing electric wave transmitted by the wireless tag existing in the communicable regions and received by the antenna; and a passing determination section (22, 122) that determines whether the wireless tag passes by the passing determination point, based on a pattern of presence or absence of reading in association with a lapse of time.