Antenna Positioning for Wireless Tag Location
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge in determining the position of a wireless tag is exacerbated by phase characteristics that are similar across different positions, making it difficult to accurately identify the tag's location using existing wireless communication systems.
Innovation Solution
A communication apparatus with one or more antennas, a first driving device, and a second driving device, where the processor determines the position of the wireless tag by acquiring tag data through the movement of the antennas in different directions, improving accuracy without increasing the number of parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If phase measurement is used to determine wireless tag position, then position information can be obtained, but measurement precision deteriorates when phase characteristics are similar at different positions
Solution Approach 1:
The patent transitions from single-direction phase measurement to two-dimensional position determination by combining phase measurements from two different directions (first direction and second direction). This dimensional expansion allows the system to distinguish between positions that have similar phase characteristics in a single direction, thereby resolving the ambiguity and improving position identification reliability.
2Measurement precision
If antenna movement in one direction is used for position determination, then device complexity is reduced, but measurement precision is insufficient for accurate position identification
Solution Approach 1:
The patent implements dynamic antenna movement control, where the antenna is moved sequentially in a first direction and then in a second direction. This dynamic approach allows the system to collect phase measurement data from multiple directions using a single antenna, achieving two-dimensional position determination without requiring multiple fixed antennas, thus balancing measurement precision with device complexity.
3Ease of operation
If phase characteristics are similar at different positions, then wireless communication is simplified, but position determination becomes difficult
Solution Approach 1:
The patent introduces an intermediate measurement approach by using phase measurements from two different directions as mediators. Instead of relying on a single phase measurement that may be ambiguous, the system uses phase measurements from both the first direction and second direction as intermediate data points to triangulate and determine the accurate position of the wireless tag, thereby overcoming the limitation of similar phase characteristics.
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 approach enhances the accuracy of determining the wireless tag's position by acquiring tag data along two directions, allowing for precise identification of the tag's location, including near the boundaries of predetermined regions.
Implementation Method 1
one or more antennas that communicate with a wireless tag
Implementation Method 2
a first driving device that causes the antenna to move in a first direction
Implementation Method 3
a second driving device that causes the antenna to move in a second direction different from the first direction
Data Source
AI summary
According to an embodiment, a communication apparatus communicates with a wireless tag using one or more antennas. The communication apparatus determines a position of the wireless tag on the basis of tag data of the wireless tag acquired on the basis of movement of the antenna along the first direction and tag data of the wireless tag acquired on the basis of movement of the antenna or a different antenna along the second direction.