Human body detection mat
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Solution Overview
Problem
Existing sleep analysis devices require sensors to be worn on the body, which can be cumbersome and provide inaccurate results depending on the user's sleeping posture, and heating mats waste energy by heating the entire surface regardless of user occupancy.
Innovation Solution
A human body detection mat with intersecting detection electrode lines and a controller that selectively heats partial regions based on user posture, improving sleep analysis accuracy and energy efficiency by sensing the user's presence and adjusting heating accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the entire mat is heated at a set temperature, then the user experiences uniform warmth, but energy efficiency decreases since heat is generated even in unused regions
Solution Approach 1:
The heating mat is divided into multiple independent heating zones corresponding to different body regions (head, torso, legs). Each zone can be independently controlled based on detected user occupancy, allowing selective heating of only the regions where the user is actually lying down rather than heating the entire mat surface.
Solution Approach 2:
Different regions of the mat are provided with different heating characteristics based on local user presence. The controller adjusts heating intensity and activation for each zone individually, providing warmth only where needed according to the user's sleeping posture and body position detected by the sensor system.
2Device complexity
If a sensor is placed at the bottom of bedding to analyze sleep, then the device structure is simple, but measurement accuracy decreases when the user sleeps in certain postures
Solution Approach 1:
The sensor system transitions from a single-plane placement at the bottom of bedding to a multi-dimensional detection network. Sensor lines are arranged in multiple directions (first direction and second direction intersecting at preset regions) to create a three-dimensional detection capability that can accurately sense user presence and posture regardless of sleeping orientation.
Solution Approach 2:
The detection system dynamically adapts to different user postures by using multiple intersecting sensor lines that can detect changes in capacitance or resistance from various directions. This dynamic detection capability allows the system to maintain measurement accuracy whether the user sleeps on their back, side, or in other positions.
3Ease of manufacture
If straight detection electrode lines are used, then the manufacturing process is simple, but detection coverage and accuracy in preset regions are reduced
Solution Approach 1:
The detection electrode lines are designed with curved portions in the preset regions instead of straight lines. These curved sections increase the interaction area with the user's body and improve the sensitivity of detection in critical zones where user presence needs to be accurately determined, while still maintaining overall linearity for ease of manufacturing.
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
The mat enhances sleep analysis accuracy regardless of posture and reduces energy consumption by heating only the occupied regions, improving user comfort and efficiency.
Implementation Method 1
the user's sleep may be analyzed by placing a sensor 110 at the bottom of bedding
Implementation Method 2
the operation of the sensor 110 may depend highly on the user's sleeping posture
Implementation Method 3
the at least one of the plurality of first detection electrode lines or the plurality of second detection electrode lines may include a heating electrode configured to generate heat
Data Source
AI summary
A human body detection mat is provided to analyze a user's sleep and selectively generate heat in a partial area thereof. The human body detection mat can include a substrate, a plurality of first detection electrode lines arranged on the substrate and formed along a first direction, and a plurality of second detection electrode lines arranged on the substrate and formed along a second direction which intersects with the first direction. The first and second detection electrode lines intersect with each other within a specific area on the substrate and are formed to be flexed within the specific area.