Electrocardiography Belt With Segmented Electrode Array
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Solution Overview
Problem
Conventional electrocardiographic measurement devices require a large number of electrodes to accommodate upper arms of varying circumferential lengths, leading to complex circuitry for generating electrocardiographic waveforms.
Innovation Solution
A belt with an electrode array featuring a small number of electrodes arranged at predetermined intervals, where the first N+2 electrodes are spaced equally and subsequent electrodes have increasing intervals, allowing for effective electrocardiographic information generation without the need for a large number of electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If many electrodes are provided to accommodate upper arms of various users, then adaptability to different users is improved, but device complexity increases
Solution Approach 1:
The electrode array is divided into multiple groups, with each group containing a specific number of electrodes (N+2 or more). Each group can independently accommodate different upper arm circumferences, eliminating the need for a single large array of electrodes to cover all user sizes. This segmentation reduces the total number of electrodes required while maintaining adaptability across different users.
Solution Approach 2:
The belt is designed to be windable around the living body in the circumferential direction, allowing dynamic adjustment to fit different arm sizes. Combined with the segmented electrode groups, this enables the same electrode array configuration to adapt to various users without requiring complex circuit reconfiguration, thus reducing overall device complexity while maintaining versatility.
2Adaptability or versatility
If many electrodes are provided to accommodate upper arms of various users, then coverage of different circumferential lengths is improved, but manufacturing complexity increases
Solution Approach 1:
By segmenting the electrode array into groups of N+2 electrodes, the manufacturing process becomes simpler. Each segment can be manufactured and tested independently, and the same segment design can be reused across different belt sizes. This modular approach reduces manufacturing complexity compared to producing a single large array with many electrodes for all sizes.
Solution Approach 2:
The invention changes the parameter of electrode spacing within groups to equal predetermined intervals, simplifying the manufacturing process. This regular spacing pattern is easier to manufacture consistently across different belt sizes compared to irregular spacing that would be required if many electrodes were distributed across the entire belt length to accommodate all user sizes.
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 configuration enables accurate electrocardiographic information capture with fewer electrodes, reducing the complexity of the circuit and eliminating the need for multiple electrodes, while maintaining effective signal detection across varying upper arm lengths.
Implementation Method 1
measures the electrocardiographic waveform of a user by detecting voltage at the surface of the skin of a living body caused by cardiac activity
Data Source
AI summary
A belt and electrocardiographic measurement device, the belt including a belt body windable around an upper arm in a circumferential direction of the upper arm, and an electrode array including a plurality of electrodes fixed to an inner surface of the belt body and arranged side by side in a direction, which is a longitudinal direction of the belt body, the plurality of electrodes being more than N+2 in number, where N is a number of electrodes required for obtaining electrocardiographic information, the electrodes, counted from a first electrode located at a first end in the direction (X) by counting including the first electrode, to the (N+1)th electrode in the direction (X) being arranged at equal intervals that are predetermined intervals, and intervals between each of the (N+1)th and subsequent electrodes being greater than the predetermined interval.