Bionic Model with Fiber Grating Sensors for Pressure Measurement
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Solution Overview
Problem
Current methods for measuring pressure from pressure garments, such as compression stockings, face challenges with accuracy due to the use of rigid human body models and electronic pressure sensors that are prone to electromagnetic interference and have low detection signal accuracy, leading to inconsistent and often uncomfortable pressure distribution on the body.
Innovation Solution
An intelligent bionic human body part model with integrated fiber grating sensing units on optical fibers, which are lightweight, durable, and resistant to electromagnetic interference, providing high measurement accuracy and fast measurement speed, and are integrated into an elastomer model that mimics the body's mechanical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electronic pressure sensors are used to measure pressure on human body, then pressure measurement can be achieved, but measurement precision deteriorates due to low detection signal accuracy and electromagnetic interference
Solution Approach 1:
The patent replaces electronic pressure sensors with fiber grating sensing units that use optical principles instead of electrical signals. The fiber grating sensors detect pressure through wavelength shifts in reflected light, eliminating susceptibility to electromagnetic interference and improving measurement reliability and precision.
Solution Approach 2:
The patent changes the measurement parameter from electrical voltage/output to optical wavelength. The fiber grating sensing units measure pressure through wavelength shifts (e.g., 1550nm to 1550nm±shift), providing higher precision and immunity to electromagnetic interference compared to traditional electronic sensors.
2Ease of manufacture
If rigid human body part model is used for measurement, then model construction is simplified, but measurement precision deteriorates due to inability to simulate actual body deformation
Solution Approach 1:
The patent transforms the rigid human body part model into a deformable model that can dynamically change shape under applied pressure. The deformable model accurately simulates real human body deformation characteristics, improving pressure distribution measurement precision while maintaining reasonable manufacturing complexity.
Solution Approach 2:
The patent changes the mechanical property parameter of the model from rigid to deformable by selecting materials with appropriate elasticity modulus. This allows the model to realistically simulate human body tissue deformation under compression, significantly improving measurement accuracy.
3Measurement precision
If fiber grating sensing units are used instead of electronic sensors, then measurement precision improves, but device complexity increases due to integrated optical fiber system
Solution Approach 1:
The patent combines multiple sensing functions into a single integrated optical fiber system. The fiber grating sensing units are embedded within the deformable human body part model, merging the structural model and sensing system into one unified device, which simplifies overall complexity despite the advanced sensing technology.
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 solution enables precise and consistent pressure measurement, reducing the risk of discomfort and injuries by accurately simulating the human body's shape and pressure distribution, improving the effectiveness of pressure garments in enhancing blood circulation and preventing venous diseases.
Implementation Method 1
a plurality of fiber grating sensing units integrated on an optical fiber
Data Source
AI summary
Disclosed are an intelligent bionic human body part model detection device and a method for manufacturing same. The device comprises: a bionic human body part model (1); and multiple optical fiber grating sensing units (5) which are integrated on an optical fibre and arranged at multiple pre-determined positions of the bionic human body part model (1). The device can improve the accuracy of the detection of pressure applied to the intelligent bionic human body part model.