Bluetooth Star Network Grouping for Outdoor Breakaway Detection
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Solution Overview
Problem
Existing technologies for detecting breakaways in group activities rely on communication distance measurements, leading to false positives and inefficiencies, and require fixed transmitters and receivers.
Innovation Solution
A Bluetooth-based star network system that groups instructors and members into primary and secondary groups using wearable devices, allowing instructors to detect breakaways without direction finding technology, and enabling some members to act as instructors and form subordinate groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If distance measurement through communication distance of protector terminal is used, then breakaway detection is achieved, but false positives occur when persons are determined as breakaway even if not actually break away
Solution Approach 1:
The system segments the group monitoring function by designating specific members as instructor terminals rather than using a single central protector terminal. Each instructor terminal independently monitors its paired member terminals, dividing the detection responsibility across multiple nodes. This segmentation allows for more localized and accurate breakaway detection, reducing false positives that occur when a single central terminal makes determination errors.
2Loss of information
If conventional short-range wireless network with multiple devices is used to calculate self-position, then movement path detection is achieved, but system complexity increases
Solution Approach 1:
The system merges the functions of position calculation, movement tracking, and breakaway detection into the instructor terminal that already exists in the group structure. Rather than adding separate direction finding beacons and complex network infrastructure, the invention combines these monitoring functions with the existing instructor terminal that is already paired with member terminals through Bluetooth. This merging approach maintains movement path tracking capability while avoiding the complexity of deploying and configuring multiple dedicated tracking devices.
3Measurement precision
If fixed transmitter and receiver (beacon direction finding technology) is used, then position detection accuracy is improved, but portability and ease of operation are reduced
Solution Approach 1:
The instructor terminal serves multiple functions: it acts as both a communication hub for paired member terminals and as a position monitoring device for breakaway detection. Rather than requiring dedicated fixed transmitters and receivers, the universal instructor terminal performs both group communication and precise position tracking functions. This multi-functionality eliminates the need for separate fixed infrastructure while maintaining position detection accuracy through Bluetooth-based distance measurement between the instructor terminal and member terminals.
Data Source
AI summary
Disclosed are grouping method and system using a Bluetooth-based star network. The present embodiment provides grouping method and system using a Bluetooth-based star network, which group an instructor and members into a primary group by using a star network so that the instructor can detect the breakaway of a moving group in the outdoors, without using a direction finding technology of a beacon that requires the use of a fixed transmitter and receiver, and allow some members of the primary group to be instructors and members, and then use the star network to allow same to be grouped into subordinate members and secondary groups, and thus a leading instructor is notified of moving farther away from the group by using messages sent therebetween.