Biological Sensor Connector Error Detection via Multi-Path Current Comparison

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing biological information measurement devices fail to detect the adhesion of foreign substances between connectors when a biosensor is mounted, leading to significant measurement errors.

Innovation Solution

The device incorporates additional connectors and a method to measure currents between these connectors, allowing the controller to compare currents and determine if a foreign substance has adhered, thereby reducing measurement errors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a biosensor is mounted to the sensor mounting component, then biological information can be measured, but it cannot be detected that a biological sample has accidentally flowed in between the first and second connectors, leading to measurement errors

Engineering Contradiction:

Improveaccuracy of biological information measurementVSAvoiddetection capability of foreign substance adhesion

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The patent segments the current measurement function into multiple independent measurement paths. Instead of measuring only the current between the first and second connectors, the system measures currents between multiple connector pairs (first-second, second-third, first-third) to create separate detection channels. This segmentation allows the system to identify foreign substance adhesion by comparing current values across different paths, thereby maintaining measurement precision while improving reliability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a controller as an intermediary that coordinates multiple current measurements and performs comparative analysis. The controller measures currents through different connector paths and uses logical comparison to detect foreign substances. This intermediary component enables the system to distinguish between legitimate biosensor signals and erroneous foreign substance adhesion, resolving the contradiction between measurement accuracy and detection reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If only two connectors are used for current measurement, then the device structure is simple, but foreign substance adhesion between connectors cannot be detected when a biosensor is mounted

Engineering Contradiction:

Improvenumber of connectorsVSAvoiddetection of foreign substance adhesion

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent transitions from a single-dimensional current measurement (one path between two connectors) to a multi-dimensional measurement system. By adding a third connector and measuring currents across multiple pairs, the system creates a two-dimensional measurement matrix. This dimensional expansion enables foreign substance detection through comparative analysis of current values across different measurement paths, achieving improved reliability without excessive structural complexity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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 approach effectively reduces measurement errors by detecting foreign substance adhesion between connectors even when a biosensor is mounted, preventing inaccuracies in biological information measurement.

Implementation Method 1

a voltage supply component that supplies voltage between the first connector and the second connector, between the second connector and the third connector, and between the first connector and the third connector

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Implementation Method 2

a current measurement component that measures a first current that flows between the first connector and the second connector, a second current that flows between the second connector and the third connector, and a third current that flows between the first connector and the third connector

Methodology Applied

Scientific EffectElectrical resistance: Electrical Resistance

Data Source

PatentUS10775331B2Biological information measuring device, bio sensor system, and error detection method for biological information measuring device

Publication Date: 2020.09.15 PHC HLDG CORP

AI summary

In a biological information measurement device, the ingress of biological sample is detected even when a sensor is mounted, which reduces measurement error. The biological information measurement device comprises a voltage supply component that supplies voltage between first and second connectors, between second and third connectors, and between first and third connectors, a current measurement component that measures a first current that flows between the first and second connectors, a second current that flows between the second and third connectors, and a third current that flows between the first and third connectors, and a controller that is connected to the current measurement component and the voltage supply component. The controller compares two or more of the currents and thereby determines whether a foreign substance has adhered between two or more connectors out of the first, second, and third connectors.