Mattress Response Enhancement Layer for Electric Field Detection
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Solution Overview
Problem
Existing mattress-based detection devices for human or animal bodies are uncomfortable for extended use and impede electric field detection due to their solid construction, which complicates the detection of varying electric fields and reduces signal-to-noise levels.
Innovation Solution
Incorporating a response enhancement layer of electrically non-conducting compressible material with conductive particles between the laminated membrane and the upper mattress, allowing electric fields to pass through while enhancing detection sensitivity and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a solid construction is used for the detection device, then structural stability is improved, but comfort for extended use deteriorates
Solution Approach 1:
The mattress is divided into multiple functional layers: a solid base layer for structural stability, a deformable intermediate layer for comfort and signal enhancement, and a detection layer with electrodes. This segmentation allows each layer to fulfill its specific function without compromising the others.
Solution Approach 2:
The mattress employs composite material construction combining rigid structural elements with deformable foam-like materials. This composite approach enables the device to maintain structural integrity while providing the comfort and deformability needed for extended use and effective detection.
2Ease of operation
If layers of deformable material are added to improve comfort, then comfort for extended use is improved, but electric field detection capability deteriorates
Solution Approach 1:
A deformable intermediate layer with specific electrical properties is introduced between the solid structure and the detection electrodes. This intermediary layer enhances comfort and mechanical response while being engineered to maintain electric field penetration, thus mediating between mechanical and electrical requirements.
Solution Approach 2:
The deformable material is designed with porous or foam-like structure that allows electric field penetration. The porous nature provides mechanical compliance for comfort while maintaining sufficient electrical conductivity or permittivity to allow the electric field to pass through effectively for detection purposes.
3Length of stationary object
If the upper ground plane is removed to extend the electric field, then electric field extension is improved, but signal-to-noise level deteriorates
Solution Approach 1:
The electrical parameters of the mattress layers are carefully controlled and optimized. The deformable material is selected or engineered to have specific permittivity and conductivity values that allow electric field extension while maintaining signal integrity. By adjusting these material parameters, the system achieves extended field penetration without excessive noise.
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
This solution improves signal strength and signal-to-noise characteristics by allowing electric fields to radiate through the mattress, enhancing the detection of changes in attributes without compromising comfort or introducing noise.
Implementation Method 1
an electric field passes through said upper mattress
Implementation Method 2
response enhancement layer of a substantially electrically non-conducting compressible-material containing electrically-conductive-particles
Data Source
AI summary
Attributes of a human or animal body are detected by the generation and detection of an electric field. A laminated membrane, connected to a control circuit, is placed over an electrically conductive ground-plane. An upper-mattress is placed above this for supporting a human or animal body. To improve the response of the detector, a response-enhancement-layer of a substantially electrically non-conducting compressible-material containing electrically-conductive-particles, such as carbon particles, is located between the laminated-membrane and the upper-mattress.