Wall Moisture Sensor Using Resistivity Measurement

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Solution Overview

Problem

Existing moisture and temperature measuring devices fail to effectively monitor internal wall conditions and provide real-time data management for renovation and insulation improvements, particularly in addressing excess moisture and thermal insulation issues.

Innovation Solution

A device with airtight measuring bodies containing sensors and electronic means to measure moisture and temperature inside and outside walls, using metallic rods to calculate electrical resistivity for accurate moisture detection, connected to an external server for data processing and wireless communication, allowing real-time monitoring and insulation optimization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If existing moisture and temperature measuring devices are used, then basic measurement function is provided, but real-time internal wall condition monitoring capability is missing

Engineering Contradiction:

Improveinternal wall condition monitoringVSAvoiddevice structure

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The device is divided into separate functional modules: airtight measuring bodies for wall insertion containing moisture and temperature sensors, and a separate electronic means unit for data processing and wireless communication. This segmentation allows the sensing function to be positioned inside walls while keeping processing external, enabling internal wall monitoring without requiring complex integrated devices.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Wireless communication serves as an intermediary between the sensors embedded in walls and the external data processing system. This allows real-time data transmission from internal wall conditions to external monitoring without physical connections, resolving the contradiction between internal measurement capability and device complexity.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If sensors are installed inside walls, then real-time internal monitoring is achieved, but device installation complexity increases

Engineering Contradiction:

Improvereal-time data managementVSAvoidinstallation process

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The measuring device is segmented into insertable airtight measuring bodies that can be placed inside walls during construction or renovation, and external electronic means that process data wirelessly. This segmentation simplifies installation compared to integrated systems, as sensors can be independently positioned within wall structures without requiring complex assembly.

Inventive Principle:

Principle #1Segmentation

3Loss of information

If comprehensive sensor equipment is deployed, then complete moisture and temperature data is obtained, but data processing and communication requirements increase

Engineering Contradiction:

Improvemoisture and temperature data completenessVSAvoiddata processing system

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The data processing and wireless communication functions are extracted from the sensor units and placed in separate external electronic means. This extraction allows comprehensive data collection from multiple sensors while keeping individual sensor units simple, and enables centralized processing of complete moisture and temperature datasets without complicating the sensing devices themselves.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Wireless communication acts as an intermediary that transports complete sensor data from distributed measuring bodies to external processing systems. This intermediary enables comprehensive data collection without requiring complex processing capabilities within each sensor unit, separating data acquisition from data management.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 real-time monitoring and management of moisture and temperature within walls, providing valuable data for renovation validation and thermal insulation improvements, with wireless communication and data processing for informed decision-making.

Implementation Method 1

means connected to said measuring elements, configured to measure the electrical resistivity that passes between both metallic rods

Methodology Applied

Scientific EffectElectrical resistivity: Electrical Resistance

Implementation Method 2

at least one internal temperature sensor installed on said wall to be parameterised

Methodology Applied

Scientific EffectTemperature sensing: Thermocouple

Data Source

PatentEP4524529B1Equipment for measuring moisture and temperature inside the walls and the space where the measuring equipment is housed

Publication Date: 2025.09.10 MARTÍNEZ LLUCH ANTONIO

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AI summary

The object of the present invention is to provide a novel device configured to measure moisture and temperature parameters inside different types of walls in a building and/or inside the space where the sensor equipment is housed, in addition to providing processing means configured to manage temperature and moisture data in real time, provide a performance profile of said variables in a specific environment, or, when carrying out a renovation, be able to establish how to improve the thermal insulation of a specific room and/or installation. Another variable is knowing the effectiveness of the treatments carried out to avoid moisture by capillarity or filtration.