Finger-Mounted Magnetic Sensor for Motor Function Measurement
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Solution Overview
Problem
Existing methods for measuring motor function, such as those used for patients with Parkinson's disease or cerebral infarction, are subjective and inconvenient, with discomfort and high costs associated with sensor attachment and storage.
Innovation Solution
A sensor system comprising a magnetic field generator and detector attached to the fingers using plastic bands, generating and detecting a magnetic field to analyze finger movements, with a device that converts induced current into digital signals for accurate motor function assessment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If coils are worn on fingers for measuring motor function, then measurement accuracy is improved, but wearing comfort deteriorates
Solution Approach 1:
The patent applies this principle by covering the rigid coil boards with flexible plastic material. The coil board is covered with plastic to form a flexible composite structure that can conform to the finger shape, reducing discomfort while maintaining the magnetic field generation and detection capabilities of the coil board.
2Measurement precision
If coils are worn on fingers for measuring motor function, then measurement accuracy is improved, but user convenience deteriorates
Solution Approach 1:
The patent applies this principle by integrating the coil board, plastic covering, and attachment structure into a single unified sensor unit. This merged design allows the sensor to be easily attached to and removed from fingers, and simplifies storage by eliminating separate components that would need to be managed individually.
3Ease of operation
If coil boards are covered with plastic, then wearing comfort is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies this principle by using a plastic covering that can be molded or formed to fit the coil board structure. The plastic layer serves as a protective and comfort-enhancing shell that can be applied through molding processes, balancing the added manufacturing steps with the significant improvement in wearability.
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 system provides a more accurate, user-friendly, and cost-effective method for measuring motor function by minimizing discomfort and improving convenience in sensor attachment and storage, while enhancing the reliability of motor function analysis.
Implementation Method 1
have a coil board generating a magnetic field by electrification
Implementation Method 2
have the coil board generating an electric current having a magnitude corresponding to a strength of the magnetic field as detected
Data Source
AI summary
This invention provides a sensor or its related art to be easily used for measuring motor function of living body. This invention relates to a sensor for measuring motor function, which includes a magnetic field generator attached to one of two predetermined positions in a living body changing mutual distance caused by an action of the living body to have a coil board generating a magnetic field by electrification, and a magnetic field detector attached to the other of the two predetermined positions in the living body to detect the magnetic field generated by the magnetic field generator and have the coil board generating an electric current having a magnitude corresponding to a strength of the magnetic field as detected. Furthermore, each of the magnetic field generator and the magnetic field detector is provided with plastics covering a whole coil board thereof.