Pressure Sensing Assembly with Strain Amplifying Regions
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Solution Overview
Problem
Conventional pressure sensing assemblies require high assembly accuracy and can only detect deformation in one-dimensional direction, leading to false recognition and reliability issues when pressure is applied from other dimensions.
Innovation Solution
A pressure sensing assembly with a rigid structure featuring strain amplifying regions and a detection circuit comprising bridge circuits and force sensors, which generates distinct output signals to recognize the direction and magnitude of acting forces through a signal processing circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional pressure sensing assemblies are used, then the structure is simple, but the assembly accuracy requirement is high and multi-dimensional detection capability is insufficient
Solution Approach 1:
The rigid structure is divided into multiple rigid blocks arranged at intervals, with strain amplifying regions formed between adjacent blocks. This segmentation allows the structure to detect deformations in multiple dimensions independently, improving adaptability while reducing the overall assembly accuracy requirement through modular design.
Solution Approach 2:
The patent introduces strain amplifying regions that extend in multiple dimensions from the rigid blocks. These regions create additional detection dimensions, enabling the assembly to detect forces applied from various directions (multi-dimensional detection) without requiring proportionally higher assembly precision for each individual dimension.
2Measurement precision
If conventional pressure sensing assemblies are used, then the structure is simple, but the sensitivity and noise performance are insufficient
Solution Approach 1:
Strain amplifying regions are locally introduced between rigid blocks at specific positions. These regions have enhanced compliance and strain amplification properties concentrated at key locations, improving sensitivity to small deformations without requiring the entire structure to be complex. The local quality enhancement provides high sensitivity while maintaining overall structural simplicity.
3Reliability
If conventional pressure sensing assemblies are used, then the assembly process is simple, but the reliability is low due to false recognition from dimensional decomposition
Solution Approach 1:
By segmenting the rigid structure into multiple blocks with defined strain amplifying regions between them, the patent creates independent detection channels for different spatial dimensions. This segmentation prevents force decomposition across dimensions, improving reliability by ensuring that forces in one dimension do not falsely trigger detection in another dimension, while the modular nature keeps assembly relatively simple.
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 accurate detection of multi-dimensional deformations with improved reliability and sensitivity, reducing assembly complexity and noise, while maintaining low cost and simplicity.
Implementation Method 1
The current commonly used pressure detection technologies include different types of technologies such as resistive strain gauge technology
Data Source
AI summary
A pressure sensing assembly, a pressure sensing method, and a device having the pressure sensing assembly are disclosed. The detection circuit and the signal generating circuit are connected to a signal processing circuit, the detection circuit includes a first bridge circuit constituted by connecting at least four force sensors R1, R2, R3 and R4. During use, the rigid structure is attached on an object to be detected which is deformed under action of an acting force, the detection circuit and the signal generating circuit are cooperated so as to generate different output signals that pass through the signal processing circuit, so that a direction and a magnitude of the acting force is recognized. The pressure sensing assembly has an integrated structure, is prone to be assembled, has a simple circuit configuration, and is low in cost.