Reconfigurable Sensor Network for Subsurface Resistivity Mapping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for detecting subsurface anomalies and fluid leaks beneath composite concrete and asphalt structures are inefficient, requiring destructive testing and lacking the ability to dynamically adjust electrode placement and measure resistivity in real-time, especially in non-linear layouts and around obstructions.
Innovation Solution
A method and apparatus using a reconfigurable network of sensors that distribute current and measure voltage, performing regression correlation to create a resistivity model, allowing for graphical representation and analysis of subsurface soil anomalies, with a power distribution unit controlling current amplitude and a self-test sequence for faulty sensors, enabling dynamic electrode placement and real-time data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If destructive testing methods are used to locate subsurface anomalies, then detection accuracy is improved, but structural integrity and time are worsened
Solution Approach 1:
The patent replaces destructive mechanical testing methods with electrical resistivity measurement methods. Sensors measure voltage differences created by injecting current into the ground, allowing detection of subsurface anomalies without physically disturbing the concrete structure. This substitution of measurement principle resolves the contradiction by maintaining detection accuracy while preserving structural integrity.
Solution Approach 2:
The patent introduces electrical current as an intermediary medium to detect subsurface conditions. By injecting current through electrodes and measuring voltage responses, the system indirectly probes subsurface anomalies without direct contact or damage to the concrete structure. This intermediary approach enables accurate detection while avoiding structural compromise.
2Adaptability or versatility
If fixed electrode placement is used, then device complexity is reduced, but adaptability to non-linear layouts and obstructions is worsened
Solution Approach 1:
The patent implements a dynamic electrode placement system where sensors can be repositioned along the concrete structure according to actual layout requirements and obstruction locations. The system adapts its geometry to match non-linear arrangements, allowing flexible configuration without requiring a fixed rigid structure. This dynamic capability provides adaptability while managing complexity through standardized sensor modules.
Solution Approach 2:
The patent divides the measurement system into discrete, independently placeable sensor units that can be distributed along the concrete structure. Each sensor module can be positioned separately to accommodate non-linear layouts and avoid obstructions. This segmentation allows flexible adaptation to complex geometries while keeping individual components simple and manageable.
3Productivity
If real-time resistivity measurement is implemented, then detection speed is improved, but use of energy and device complexity are worsened
Solution Approach 1:
The patent implements periodic measurement cycles where current is injected and voltage measured in alternating phases. The system performs resistivity measurements at discrete time intervals rather than continuously, allowing real-time monitoring capability while reducing energy consumption. This periodic operation enables fast detection response while managing power requirements through duty-cycled operation.
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 accurate and non-destructive detection of subsurface anomalies and fluid leaks beneath composite structures by providing a flexible and efficient system for resistivity modeling, reducing downtime and installation costs through interchangeable sensors and minimal electrical noise.
Implementation Method 1
Raw resistivity data is collected by a reconfigurable network of sensors that distributes current and measures voltage
Data Source
AI summary
A method and apparatus are provided for detecting and transmitting geophysical data from a plurality of electrodes inserted into the soil utilizing a set of identical dynamically reconfigurable voltage control units located on each electrode and connected together by a communications and power cable. A test sequence is provided in each voltage control unit. Each voltage control unit records data measurements for transmission to a central data collector. Each voltage control unit incorporates and determines its positional relationship to other voltage control units by logging when the unit is attached to the electrode. Each voltage control unit I equipped with a magnetic switch for detecting when they are in contact with the electrode.