Biological Sample Sensor Temperature Correction

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Solution Overview

Problem

Conventional biological sample measuring apparatuses experience measurement errors due to temperature fluctuations caused by user handling, as heat from the user's hand is transmitted to the internal temperature sensor, influencing the detection temperature and subsequent measurement corrections.

Innovation Solution

The apparatus incorporates two temperature sensors, one on each end of the body case, allowing for comparison of temperature changes and using the sensor with the smaller temperature change for correction, thereby minimizing the impact of user-handled heat on measurement values.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a single temperature sensor is provided inside the body case for temperature correction, then the device structure remains simple, but measurement error increases due to heat transmission from user's hand

Engineering Contradiction:

Improvemeasurement accuracyVSAvoidtemperature sensor configuration

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The body case is divided into multiple temperature monitoring zones with separate temperature sensors (first temperature sensor near the biological sample sensor mounting portion, second temperature sensor at the opposite end). This segmentation allows independent temperature measurement at different locations, enabling the system to identify and select the sensor least affected by hand heat, thereby improving measurement accuracy without excessive complexity

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the body case are assigned different functions: one region (near the biological sample sensor) is monitored for local temperature correction, while another region (opposite end) serves as a reference zone less susceptible to hand heat. This local quality differentiation enables the system to select the most reliable temperature data source for accurate measurement correction

Inventive Principle:

Principle #3Local quality

2Measurement precision

If the temperature sensor is placed near the biological sample sensor mounting portion for direct temperature correction, then temperature correction is effective, but the sensor becomes more susceptible to heat from user's hand

Engineering Contradiction:

Improvetemperature correction accuracyVSAvoidheat interference from user's hand

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The second temperature sensor positioned at the opposite end of the body case acts as an intermediary reference point. By comparing temperatures from both sensors, the system can identify which sensor is less affected by hand heat and use that as the reliable temperature correction source, effectively mediating between the need for temperature correction and the harmful heat interference

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The control portion continuously monitors temperature data from both temperature sensors and dynamically selects the most reliable temperature information based on detected temperature changes. This feedback mechanism ensures that the system adapts to varying thermal conditions and consistently uses the least contaminated temperature data for measurement correction, improving accuracy while compensating for hand heat effects

Inventive Principle:

Principle #23Feedback

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 suppresses measurement errors by using temperature information from the sensor less affected by user-handled heat, ensuring more accurate corrections and reliable biological sample information measurement.

Implementation Method 1

a first temperature sensor provided on the one end side inside the body case, a second temperature sensor provided on the other end side inside the body case

Methodology Applied

Scientific EffectTemperature detection:

Implementation Method 2

heat from the gripping hand will gradually be transmitted to the interior of the body case and influence the detection temperature

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS11187667B2Biological sample measuring apparatus

Publication Date: 2021.11.30 PHC HLDG CORP

AI summary

The present invention includes a body case having a biological sample sensor mounting portion on one end side, a temperature sensor (A) provided on the one end side inside the body case, a measurement portion connected to the biological sample sensor mounting portion, and a control portion connected to the measurement portion. A temperature sensor (B) is provided on one other end side inside the body case, and when measurement is performed by the measurement portion, temperature change amounts in the two end portions are compared using the temperature sensors (A) and (B). Furthermore, a measurement value obtained by the measurement portion is corrected using temperature information from either one of the temperature sensors (A) or (B) that is provided in the end portion on the side where the temperature change is smaller.