Motion-Based Device Group Affiliation via Accelerometer Detection
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Solution Overview
Problem
Public safety communication devices lack an easy method to quickly and efficiently affiliate with new dynamic communication groups, as existing methods require manual interaction with device interfaces or physical motions that are not straightforward for forming affiliations.
Innovation Solution
A server-assisted method using motion-based affiliation requests, where communication devices enter an affiliation motion detection state and perform a specific motion to affiliate with a communication group, allowing for quick and easy affiliation without manual interface manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual interface manipulation is used to affiliate with a communication group, then the device can be precisely controlled to select specific groups, but the affiliation process becomes time-consuming and complex
Solution Approach 1:
The patent replaces manual interface manipulation (mechanical interaction with buttons, knobs, or touch screens) with motion-based control using an accelerometer. The system detects physical motions such as shaking, tilting, or rotating the device to trigger affiliation actions, eliminating the need for step-by-step menu navigation and significantly reducing the time required to join communication groups.
Solution Approach 2:
The system automatically detects motions and translates them into affiliation actions without requiring the user to manually navigate interfaces or confirm selections. The accelerometer continuously monitors device movement, and when a predefined motion pattern is detected, the system automatically initiates the affiliation process, making the device serve itself in responding to user intent.
2Productivity
If motion-based control is implemented for device interaction, then the operation speed increases, but the precision of selecting specific communication groups decreases
Solution Approach 1:
The patent assigns different functional meanings to different aspects of the same motion input. For example, the intensity, duration, or direction of a shaking motion can distinguish between different actions (e.g., joining a group vs. leaving a group). This allows precise control through subtle variations in a single motion type, maintaining accuracy while enabling rapid operation.
Solution Approach 2:
The system dynamically interprets motion patterns by analyzing multiple parameters including acceleration magnitude, duration, frequency, and sequence of motions. Rather than relying on static button presses, the system adapts its interpretation based on the characteristics of the detected motion, enabling precise group selection through dynamic analysis of user intent expressed through motion variations.
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 rapid and effortless affiliation of communication devices with specific groups by detecting predefined motions, improving the efficiency of forming and joining communication groups in public safety scenarios.
Implementation Method 1
an accelerometer is used to detect a motion of the device to manipulate the user interface
Data Source
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AI summary
A device receives (202) a motion-based affiliation request message and, upon receipt, enters an affiliation motion detection state. If (206) an affiliation motion is detected while in the detection state, a message is sent (208) to a server. The message comprises a request to affiliate to a communication group and/or an indication that the device has detected the affiliation motion. From the perspective of the server, a motion-based affiliation initiation request message is received, and based on the message, at least one device is determined to receive a motion-based affiliation request message. The server sends the affiliation request message to the device and determines whether a message was received. The message comprises one of a request to affiliate to the communication group and/or an indication that the device has detected an affiliation motion. If a message was received, affiliation of the device to the communication group is initiated.