Sample Analyzer Reagent Shielding Circuit Crosstalk

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Solution Overview

Problem

Existing sample analyzers face issues with adjacent channel crosstalk when multiple reagent containers are placed in the same reagent supply device, leading to inaccurate reading of reagent information due to electromagnetic interference.

Innovation Solution

The implementation of a reagent supply device with an electromagnetic field shielding circuit that generates a counter electromagnetic field to isolate the electromagnetic field transmission to specific reagent positions, ensuring accurate reading of reagent information by controlling the electromagnetic field shielding circuit to weaken the electromagnetic field transmitted to non-target reagent positions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple reagent containers are placed in the same reagent supply device, then the device can supply multiple reagents for different tests, but electromagnetic field crosstalk occurs between adjacent information read/write devices, causing reading errors

Engineering Contradiction:

Improvereagent supply capabilityVSAvoidinformation reading accuracy

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The reagent supply device is divided into multiple independent reading zones, each with its own information read/write device and electromagnetic field shielding structure. This segmentation isolates the electromagnetic fields of adjacent readers, preventing crosstalk while maintaining the ability to read multiple reagent containers simultaneously.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Electromagnetic field shielding structures are locally installed between adjacent information read/write devices and reagent containers. These shielding structures create localized electromagnetic field isolation zones, ensuring that each reading operation occurs in an independent electromagnetic environment without interfering with neighboring readers.

Inventive Principle:

Principle #3Local quality

2Productivity

If information read/write devices are positioned close to reagent containers for efficient reading, then reading speed improves, but electromagnetic interference increases causing channel crosstalk

Engineering Contradiction:

Improveinformation reading efficiencyVSAvoidelectromagnetic interference

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

Electromagnetic field shielding structures serve as intermediary elements positioned between the information read/write devices and adjacent reagent containers. These shielding structures allow the readers to remain close to reagent containers for efficient reading while blocking electromagnetic field propagation to adjacent zones, thus eliminating channel crosstalk.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The electromagnetic field shielding structures extract and contain the electromagnetic field generated by each information read/write device within its designated reading zone. By directing and confining the electromagnetic field, the shielding structures prevent it from extending into adjacent zones where other readers operate, thus eliminating interference while maintaining reading efficiency.

Inventive Principle:

Principle #2Taking out (Extraction)

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 solution effectively prevents electromagnetic interference, allowing for accurate reading of reagent information from the target reagent container, thereby ensuring reliable operation of the sample analyzer.

Implementation Method 1

an electromagnetic field shielding circuit connected to the antenna module and configured to generate a counter electromagnetic field, so as to weaken an electromagnetic field transmitted from the emission electromagnetic field to another reagent position

Methodology Applied

Scientific EffectElectromagnetic field shielding: Faraday Cage

Data Source

PatentEP4083632A1Sample analyzer and reagent information reading method applied to said sample analyzer

Publication Date: 2022.11.02 SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD

Figure 1~2
Figure 3~4A
Figure 4B~4C

AI summary

The disclosure provides a sample analyzer comprising a reagent supply device and a reagent information reading method applied to said sample analyzer. The reagent supply device includes: a reagent placement compartment provided with at least two reagent positions for respectively placing a reagent container with an information storage component; an antenna module; a signal transmission circuit for transmitting an emission electromagnetic field; an information read/write device for performing signal interaction with the information storage component; an electromagnetic field shielding circuit for generating a counter electromagnetic field; and a controller configured to control the information read/write device to transmit the emission electromagnetic field by the signal transmission circuit and the antenna module, to perform signal interaction with the information storage component in a first reagent position; and control the electromagnetic field shielding circuit to generate the counter electromagnetic field, so as to weaken an electromagnetic field transmitted from the emission electromagnetic field to a second reagent position.