Acoustic Mold Sensing for Continuous Early Growth Detection
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Solution Overview
Problem
Current methods for detecting mold are labor-intensive, expensive, and require laboratory analysis, making them inefficient for continuous monitoring and early detection of mold growth, which can lead to health and structural issues.
Innovation Solution
An integrated mold sensor device that uses sound waves to detect mold growth by emitting and receiving ultrasonic sound waves, measuring frequency response characteristics, and estimating mold growth through changes in signal attenuation, allowing for continuous monitoring and real-time detection without the need for laboratory samples.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional laboratory analysis methods are used to detect mold, then accurate identification of mold types and concentrations can be achieved, but the process becomes labor-intensive, expensive, and time-consuming
Solution Approach 1:
The patent replaces the mechanical laboratory analysis system with an acoustic sensing system. A speaker emits sound waves that interact with mold growth on a substrate, and a microphone detects the reflected or transmitted sound waves. The controller analyzes changes in sound wave properties (attenuation, frequency response) to determine mold presence and growth, eliminating the need for manual sample collection, transportation, and laboratory examination while maintaining detection accuracy
Solution Approach 2:
The system enables self-service detection by automatically analyzing sound wave interactions with the mold-containing substrate. The controller processes the acoustic signals directly, comparing them against baseline measurements to identify mold growth patterns, thereby eliminating dependence on external laboratory services and expert analysis
2Reliability
If traditional sampling methods are used, then mold can be detected through laboratory analysis, but continuous monitoring is not possible and results are delayed
Solution Approach 1:
The patent implements continuous monitoring capability where the acoustic sensing system can repeatedly measure sound wave interactions with the substrate over time. The controller can perform multiple measurements in succession, tracking mold growth progression continuously rather than through discrete time-point sampling, enabling real-time detection and immediate alerting when mold thresholds are exceeded
3Ease of operation
If visual inspection is used to detect mold, then readily visible mold can be identified, but invisible or early-stage mold growth cannot be detected
Solution Approach 1:
The patent introduces sound waves as an intermediary that can penetrate and interact with the substrate and early-stage mold growth that is invisible to the human eye. The acoustic waves interact with the physical structure of the substrate-mold system, and the controller analyzes subtle changes in sound wave properties that indicate the presence of mold even before it becomes visually apparent, thereby extending detection capability beyond visual inspection limits
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 efficient and cost-effective continuous monitoring of mold growth, providing early detection and alert systems to prevent health and structural issues, while reducing the need for laboratory analysis.
Implementation Method 1
a speaker disposed within the chamber and configured to convert an input signal into sound waves directed toward the substrate
Implementation Method 2
a microphone disposed in the chamber and configured to generate an electrical signal representing sound waves reflected from the substrate
Implementation Method 3
the sensing device is configured to detect sound waves reflected from a growth surface
Implementation Method 4
the sensing device is configured to detect sound waves transmitted through the growth surface
Data Source
AI summary
A mold sensor is configured with an enclosed chamber in which a nutrient-treated substrate is positioned. The mold sensor includes a sensing system that is configured to measure properties of pressure waves within the enclosed chamber. A controller operates the sensing system and is programmed to detect a presence of mold growing in the chamber based on the characteristics of the pressure wave response within the chamber.