Bed Temperature Sensor Array for Non-Intrusive Body Position Detection

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Solution Overview

Problem

Current methods for monitoring and recording a user's body position or posture on a sleeping surface are inconvenient and disruptive, as they require direct observation.

Innovation Solution

The use of temperature sensors spatially distributed on the sleeping surface to detect temperature distribution patterns, which correspond to different body positions or postures, allowing for remote and automatic detection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If direct observation methods are used to monitor body position, then measurement accuracy is improved, but user convenience and comfort deteriorate due to disruption

Engineering Contradiction:
Improvebody position detection accuracyVSAvoiduser convenience
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The patent replaces direct mechanical observation with a temperature-based sensing system. Temperature sensors distributed across the sleeping surface detect body position indirectly through thermal patterns, eliminating the need for direct observation while maintaining detection accuracy and user comfort.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces temperature distribution as an intermediary parameter to infer body position. Instead of directly observing body position, the system measures temperature patterns on the sleeping surface, which serve as a mediator to determine position and posture indirectly.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If temperature sensors are distributed across the sleeping surface, then body position detection capability is improved, but device complexity increases

Engineering Contradiction:
Improvebody position detection capabilityVSAvoidsensor arrangement complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent divides the sleeping surface into multiple zones with distributed temperature sensors. Each sensor monitors a specific region, and the collective data from segmented zones enables comprehensive body position detection while maintaining manageable system complexity through modular sensor placement.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The temperature sensor array serves multiple functions: detecting body position, determining posture, monitoring presence, and tracking movement. This multi-functionality increases adaptability while the standardized sensor design and uniform distribution strategy keep device complexity manageable.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 convenient, comfortable, and flexible monitoring of body positions or postures, reducing disturbance and improving sleep quality and health-related applications.

Implementation Method 1

collecting a plurality of sensor outputs from a plurality of temperature sensors that are arranged at a plurality of locations on a sleeping surface

Methodology Applied
Scientific EffectTemperature sensing:

Data Source

PatentUS20250057322A1Bed having features for determining body posture and position using sensors
Publication Date: 2025.02.20 SLEEP NUMBER CORP
  • US20250057322A1 patent drawing
  • US20250057322A1 patent drawing
  • US20250057322A1 patent drawing

AI summary

A method for detecting body position or posture of a user is provided. The method includes arranging a plurality of temperature sensors at a plurality of locations on a sleeping surface. The method includes collecting a plurality of sensor outputs from the plurality of temperature sensors. The method includes determining a plurality of associations between the plurality of locations and the plurality of sensor outputs. The method includes determining, based on the plurality of associations, the body position or posture of the user. Also provided is a system for detecting body position or posture of a user. The system includes a sleeping surface, a plurality of temperature sensors arranged at a plurality of locations on the sleeping surface, and a processor communicatively coupled to the plurality of temperature sensors.