Presence Status Detection via Heat and Motion Analysis

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Solution Overview

Problem

Existing systems for determining presence status using mobile communications devices lack accuracy in detecting user availability based on heat and motion data, often resulting in incomplete or inaccurate presence information.

Innovation Solution

A presence server that receives and analyzes heat and motion information from mobile devices, using sensors to calculate temperature differences and fit models to acceleration data to determine if a human profile is indicated, thereby providing more accurate presence status information.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If heat and motion detection is used to determine presence status, then presence information can be provided, but the accuracy of detection is insufficient

Engineering Contradiction:
Improvepresence information accuracyVSAvoidheat and motion detection accuracy
Core Design Contradiction:
ReliabilityVSMeasurement precision

Solution Approach 1:

The patent combines multiple sensor types (heat sensors and motion sensors) into a unified detection system. The presence server receives and processes both heat information and motion information from mobile devices, integrating these different measurement approaches to determine presence status. This merging of detection methods allows the system to cross-validate results and improve overall accuracy by considering multiple data sources simultaneously.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The system implements feedback mechanisms where the presence server analyzes received heat and motion information, determines presence status, and provides feedback to network elements and device clients. The server continuously monitors sensor data, compares it against established criteria, and updates presence information accordingly, allowing for iterative improvement and adaptation to different detection scenarios.

Inventive Principle:
Principle #23Feedback

2Reliability

If multiple sensors are used for heat and motion detection, then detection capability is enhanced, but device complexity increases

Engineering Contradiction:
Improvedetection capabilityVSAvoidsensor system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The presence server acts as an intermediary between the mobile devices with sensors and the network elements. Instead of requiring complex sensor systems within each device, the server receives simplified sensor data from mobile devices, performs the complex analysis and integration in the cloud, and provides processed presence information to network elements. This intermediary approach shifts complexity from the edge devices to the central processing system.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The detection system is segmented into separate functional components: heat sensors in mobile devices, motion sensors in mobile devices, and a central presence server that processes both data types. This segmentation allows each component to be optimized independently and simplifies the overall architecture by dividing complex detection tasks across multiple specialized elements rather than requiring a single complex integrated system.

Inventive Principle:
Principle #1Segmentation

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

Enhances the accuracy of presence information provided to network elements and device clients by effectively characterizing user availability through heat and motion analysis, improving the reliability of presence status determination.

Implementation Method 1

receiving a first temperature associated with a first location near an outside surface of the mobile communications device. A second temperature associated with a second location near an outside surface of the mobile communications device is received

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

The presence server is configured to receive acceleration data associated with the mobile device and analyze the acceleration data to determine whether a human profile is indicated

Methodology Applied
Scientific EffectAcceleration: Accelerometer

Data Source

PatentUS8880118B1Determining presence status using motion detection
Publication Date: 2014.11.04 T MOBILE INNOVATIONS LLC
  • US8880118B1 patent drawing
  • US8880118B1 patent drawing
  • US8880118B1 patent drawing

AI summary

Determining a presence status associated with a user of a mobile communications device allows for presence information to be provided to network elements and device clients. Presence status information includes information that indicates whether a user is likely available via the mobile communications device. Acceleration data associated with the mobile device is collected and analyzed to determine whether a human profile is indicated. Presence status information is generated based at least on whether the human profile is indicated.