Dual-Gas Sensor Excretion Classification Without Suction Fans

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Solution Overview

Problem

Existing excretion detection technologies, such as those using odor and humidity sensors, have complex structures that complicate the sensor device and may lead to inaccurate determinations of excretion types.

Innovation Solution

A determination device utilizing a first gas sensor and a second gas sensor, each detecting different gas species, to determine the type of excretion by analyzing the concentrations of hydrogen sulfide and hydrogen gases respectively, thereby simplifying the sensor device configuration and improving accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If odor sensor, humidity sensor, and suction fan are used for excretion detection, then excretion type determination is possible, but sensor device structure becomes complicated

Engineering Contradiction:
Improveexcretion type determination accuracyVSAvoidsensor device structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The invention extracts and eliminates the suction fan component from the sensor device. By using two gas sensors that can passively detect gas concentrations without active suction, the device achieves excretion type determination functionality while removing the mechanical moving parts and complex control systems associated with the fan, thereby simplifying the overall device structure.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The invention employs gas sensors that can detect multiple gas species (hydrogen sulfide and hydrogen) to perform both odor detection and excretion type determination functions. This multi-functional approach eliminates the need for separate specialized sensors and active suction mechanisms, reducing device complexity while maintaining determination accuracy.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple types of sensors are used for excretion detection, then detection capability is improved, but device complexity increases

Engineering Contradiction:
Improvedetection capabilityVSAvoidsensor configuration
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The invention merges the detection of multiple gas species (hydrogen sulfide and hydrogen) into a single integrated sensor system. By using two gas sensors that can detect different gas species simultaneously, the device achieves versatile detection capability while maintaining a simple and unified sensor configuration, avoiding the complexity of multiple specialized sensor types.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The invention changes the detection parameter from passive odor detection to active gas species concentration measurement. By selecting gas sensors that specifically detect hydrogen sulfide and hydrogen concentrations, the device achieves improved detection capability and excretion type determination accuracy while maintaining a simple sensor configuration without requiring multiple different sensor types.

Inventive Principle:
Principle #35Parameter changes

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

The device enables accurate determination of excretion types, reducing the likelihood of erroneous determinations and burden on service providers by simplifying the sensor structure and enhancing detection precision.

Implementation Method 1

a first gas concentration detected by a first gas sensor

Methodology Applied
Scientific EffectGas detection:

Implementation Method 2

a second gas concentration detected by a second gas sensor differing from the first gas sensor in gas species to be mainly detected

Methodology Applied
Scientific EffectGas detection:

Data Source

PatentUS12607616B2Determination device, determination method, and sensor device
Publication Date: 2026.04.21 SINTOKOGIO LTD
  • US12607616B2 patent drawing
  • US12607616B2 patent drawing
  • US12607616B2 patent drawing

AI summary

In order to provide a novel determination device capable of determining the type of excretion by a subject and a related technology thereof, a determination device includes at least one processor, and the at least one processor carries out a determination process of determining the type of excretion by a subject by referring to a first gas concentration detected by a first gas sensor and a second gas concentration detected by a second gas sensor which differs from the first gas sensor in gas species to be mainly detected.