Sodium Hypochlorite Detector Using Conductive Electrodes

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Solution Overview

Problem

Conventional sodium hypochlorite concentration measurement systems are costly and require connection to a computer for analysis, making them inconvenient for immediate use and prone to external disturbances.

Innovation Solution

A detector with a first and second electrode, housed in a structure with a measurement space, measures ions in a sodium hypochlorite solution to calculate conductivity and concentration, allowing for standalone, low-cost, and portable measurement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If an optical measurement system with disposable optical test element and spectroscopic detector is used, then the concentration of sodium hypochlorite can be measured, but the system is extremely costly and requires connection to a computer for analysis

Engineering Contradiction:

Improveconcentration measurement capabilityVSAvoidsystem cost and computer connection requirement

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces the optical measurement system with an electrical conduction-based measurement system. Instead of using light absorption spectroscopy with disposable optical test elements and spectroscopic detectors, the invention uses electrodes to measure electrical conductivity, which correlates with sodium hypochlorite concentration. This substitution eliminates the need for expensive optical components and computer connections while maintaining measurement capability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent eliminates the use of disposable optical test elements by employing reusable electrodes housed in a protective housing. The electrodes can be cleaned and reused multiple times, removing the ongoing cost of disposable components while simplifying the overall system architecture.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Ease of operation

If the electrical path is exposed without housing, then the measurement can be performed, but external disturbances affect the measurement accuracy

Engineering Contradiction:

Improvemeasurement accessibilityVSAvoidexternal disturbances to measurement

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent employs a housing structure that encloses the electrodes and electrical path. The housing acts as a protective shell that isolates the measurement components from external disturbances such as contaminants, physical damage, and environmental interference, while still allowing the electrodes to contact the sodium hypochlorite solution for measurement.

Inventive Principle:

Principle #30Flexible shells and thin films

3Volume of moving object

If no housing structure is used, then the device volume is small, but the electrical path is exposed to external interference

Engineering Contradiction:

Improvedevice portabilityVSAvoidmeasurement stability against interference

Core Design Contradiction:

Volume of moving objectVSReliability

Solution Approach 1:

The patent nests the electrodes within a compact housing structure. The first and second electrodes are positioned within the housing, with the electrical path contained between the outer walls. This nested arrangement protects the electrical path from external interference while maintaining a compact, portable device volume suitable for field use.

Inventive Principle:

Principle #7Nested doll (Nesting)

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

Enables instant and accurate sodium hypochlorite concentration measurement without a computer, reducing production costs and minimizing external interference.

Implementation Method 1

The processing unit, electrically connected to the first electrode and the second electrode, measures a plurality of ions in the sodium hypochlorite solution transmitted in the electrical path to obtain a conductivity of the sodium hypochlorite solution

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentUS9435760B2Detector for detecting sodium hypochlorite concentration

Publication Date: 2016.09.06 SENNO TECH

AI summary

A detector for detecting sodium hypochlorite concentration includes a first electrode, a second electrode and a processing unit. The first electrode and the second electrode are disposed opposite each other, and are soaked in a sodium hypochlorite solution under detection. An electrical path is formed among the first electrode, the sodium hypochlorite solution and the second electrode. The processing unit, electrically connected to the first electrode and the second electrode, measures a plurality of ions in the sodium hypochlorite solution transmitted in the electrical path to obtain a conductivity of the sodium hypochlorite solution and to accordingly calculate concentration of the sodium hypochlorite solution. Compared to a conventional measurement apparatus adopting an optical detector, the invention not only can be fabricated at low production costs, but also can instantly obtain the detected concentration without involving analysis of an externally connected computer.