Sensor Gate System for Absorbent Articles

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Solution Overview

Problem

Existing sensor systems for absorbent articles, particularly those monitoring wetness and temperature, often emit excessive energy due to continuous operation, which is unnecessary and can be harmful, especially when placed near the genital area, and they lack efficient mechanisms to minimize energy exposure.

Innovation Solution

The development of a sensor system that uses low energy to check for changes before initiating transmission and employs a single sensor with multiple leads to collect information from various parts of the absorbent article, minimizing energy exposure by only transmitting when a status change is detected and optimizing sensor placement to reduce unnecessary energy emission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If continuous energy emission is used for monitoring, then monitoring accuracy is improved, but energy exposure to the wearer increases

Engineering Contradiction:
Improvemonitoring accuracyVSAvoidenergy exposure
Core Design Contradiction:
Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The patent implements periodic sampling of sensor data at predetermined intervals instead of continuous monitoring. The transmitter periodically queries sensor status and only transmits data when changes are detected, reducing energy exposure while maintaining adequate monitoring accuracy through intermittent checks.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The patent extracts only the necessary monitoring function from continuous operation. By implementing event-driven transmission where data is only sent when sensor status changes, the system removes unnecessary continuous energy emission while preserving the core monitoring capability.

Inventive Principle:
Principle #2Taking out (Extraction)

2Adaptability or versatility

If multiple sensors are used to monitor different parts of the absorbent article, then monitoring coverage is improved, but device complexity increases

Engineering Contradiction:
Improvemonitoring coverageVSAvoidsensor system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines multiple sensing functions into a single integrated sensor assembly. Multiple sensors are positioned to monitor different regions (front, back, sides) of the absorbent article, but they are controlled and queried through a single transmitter unit, reducing system complexity while maintaining comprehensive coverage.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The transmitter is designed as a universal control unit that can query and receive data from multiple different sensor types (wetness, temperature, etc.) positioned at various locations. This multi-functional approach allows comprehensive monitoring without requiring separate control circuits for each sensor.

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

Data Source

PatentUS10492148B2Sensor systems for absorbent articles comprising sensor gates
Publication Date: 2019.11.26 PROCTER & GAMBLE CO
  • US10492148B2 patent drawing
  • US10492148B2 patent drawing
  • US10492148B2 patent drawing

AI summary

A sensor system for detecting a property of or within an absorbent article. The system may comprise a first sensor and a first transmitter. The sensor may be disposed in or on the absorbent article. The sensor may have a first status and may be capable of changing to a second status. The first transmitter may be capable of sensing a change in status of the sensor from the first status to the second status. The first transmitter may be capable of checking the status of the sensor noncontinuously. The first transmitter may programmed to check the status of the first sensor at least every 5 minutes but not longer than every 2 hours.