AoA Locator Self-Calibration for Movable Devices
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Solution Overview
Problem
Existing AoA positioning systems require complex infrastructure and calibration procedures, especially for movable devices that need to determine their own position and the positions of beacons within a working area, which can be overwhelming and impractical for users.
Innovation Solution
A system and method where a movable device equipped with an antenna array determines its own position and the positions of beacons by measuring the angle of arrival and distance of beacon signals, allowing for self-calibration and minimal user input, using reverse AoA mode after determining the locations of at least three beacons.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a complex infrastructure with gateways, backhaul networks, and calibration tools is used for AoA positioning, then positioning accuracy is improved, but system complexity and ease of deployment deteriorate
Solution Approach 1:
The patent extracts and removes the complex infrastructure components (gateways, backhaul networks, cloud services, deployment tools, and calibration tools) from the AoA positioning system. By eliminating these external dependencies, the system achieves positioning functionality with minimal components - specifically, movable devices with AoA locators and static beacons, thereby reducing system complexity while maintaining positioning capability
Solution Approach 2:
The patent implements self-service through automatic calibration mechanisms where movable devices autonomously determine their positions and beacon locations without requiring external calibration tools or infrastructure. The system performs self-calibration by having movable devices traverse the workspace and automatically compute relative positions based on AoA measurements, eliminating the need for manual deployment tools and calibration procedures
2Measurement precision
If manual positioning and calibration procedures are implemented, then positioning accuracy is improved, but ease of operation and setup time deteriorate
Solution Approach 1:
The patent applies preliminary action by pre-positioning simple static beacons at known locations in the workspace before operation. These beacons serve as reference points that are easily deployed in advance, eliminating the need for complex real-time calibration procedures during operation. The beacons remain stationary and provide continuous reference information for automatic positioning
Solution Approach 2:
The system performs automatic calibration where movable devices autonomously determine their own positions and the positions of other beacons without human intervention. The calibration process is automated through algorithms that compute relative positions based on AoA measurements taken during normal operation, eliminating manual positioning procedures and reducing setup complexity
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
Enables the movable device to accurately determine its own position and the positions of beacons within a working area with minimal setup complexity, allowing for autonomous operation and efficient use in various applications.
Implementation Method 1
These algorithms exploit the difference in phase of the incoming signal at a plurality of antenna elements
Data Source
AI summary
A system and method for determining a position or a movable device is disclosed. The present system utilizes a movable device equipped with a locator device that has an antenna array such that it may determine the angle of arrival of a plurality of incoming beacon signals. In certain embodiments, the movable device is also able to measure its distance travelled. By knowing its distance moved and the angle of arrival from each beacon, the locator device is able to calculate its position as well as the position of each beacon. This procedure may be executed at regular intervals so that the movable device accurately determines its position.