Bluetooth Terminal Interaction Using Direction Finding
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Solution Overview
Problem
Current indoor positioning methods, such as triangulation, fingerprint, and nearest neighbor methods, face challenges in providing precise and efficient location information for multi-terminal interactions in scenarios like Bluetooth-based indoor communications, leading to low switching efficiency and positioning precision.
Innovation Solution
The implementation of a terminal interaction method utilizing a Bluetooth module with direction finding algorithms like AoA or AoD in Bluetooth 5.1 technology to establish connections and perform precise positioning, allowing terminals to interact without manual switching, enabling efficient and precise multi-terminal interactions through mid-air gestures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual Bluetooth switching is used for multi-terminal interaction, then terminal connection establishment is simple, but interaction efficiency is low and positioning precision is poor
Solution Approach 1:
The system performs preliminary actions by pre-establishing Bluetooth connections between terminals and pre-obtaining location information through direction finding algorithms. When interaction is needed, the system automatically identifies the target terminal based on stored location data and directional information, eliminating the need for manual switching and significantly improving interaction efficiency.
Solution Approach 2:
The terminal performs self-service by automatically identifying and establishing connections with target terminals based on its own directional orientation and pre-stored location information. The system autonomously manages the connection process without requiring manual user intervention, thereby improving efficiency while maintaining simple operation.
2Measurement precision
If traditional indoor positioning methods are used, then implementation is straightforward, but positioning precision is insufficient for accurate terminal interaction
Solution Approach 1:
The system changes the positioning parameters by utilizing Bluetooth 5.1 direction finding algorithms (AoA/AoD) that provide sub-meter positioning precision. By transforming the positioning approach from traditional RSSI-based methods to angular measurement methods, the system achieves accurate terminal location identification without requiring complex infrastructure.
3Loss of time
If Bluetooth connections are established manually, then connection control is simple, but switching time is long and efficiency is low
Solution Approach 1:
The system performs preliminary connection establishment and location information acquisition before actual interaction is needed. By pre-establishing Bluetooth connections and storing location data, the system eliminates the time-consuming manual switching process during actual terminal interaction, significantly reducing switching time while maintaining ease of operation through automatic identification.
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 interaction efficiency by eliminating the need for manual Bluetooth switching and achieves precise positioning with an accuracy of less than 1 meter, facilitating convenient and accurate terminal interactions.
Implementation Method 1
The Bluetooth module determines a location of another Bluetooth terminal by using, for example, a directional finding algorithm
Implementation Method 2
The Bluetooth module determines a location of another Bluetooth terminal by using, for example, a directional finding algorithm
Data Source
AI summary
A terminal interaction method includes establishing, by a first terminal, a connection to at least one second terminal using a BLUETOOTH component, and obtaining location information of the second terminal; when the first terminal points to a direction of a second terminal, identifying, by the first terminal, the second terminal based on the location information and the direction to which the first terminal currently points; and when the first terminal performs a first action, sending, by the first terminal, a first message to the second terminal based on the first action, where the first message indicates the second terminal to perform a first function, and the first function is in a one-to-one correspondence with the first action.