Reconfigurable Sensor Network for Subsurface Anomaly Detection

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Solution Overview

Problem

Current methods for detecting subsurface leaks and anomalies beneath composite concrete and asphalt structures are inefficient, as they require destructive testing, are not suitable for real-time analysis, and lack flexibility in electrode placement and sensor interchangeability, leading to inaccurate measurements and prolonged installation times.

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 dynamic adjustment of current injection and voltage measurement permutations, and utilizing interchangeable sensors for non-linear grid arrangements and real-time data processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If traditional destructive testing methods are used to detect subsurface anomalies, then accurate detection can be achieved, but the concrete structure is damaged and installation time is prolonged

Engineering Contradiction:

Improvedetection accuracyVSAvoidstructure damage

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The patent replaces mechanical destructive testing with electrical field-based non-destructive testing. Electrical current is injected through electrodes into the subsurface soil, and voltage measurements are taken to calculate electrical resistivity. Anomalies such as leaks, voids, or changes in soil composition manifest as variations in resistivity patterns, enabling detection without physical damage to the concrete structure.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of manufacture

If fixed electrode placement is used, then simple installation is achieved, but flexibility in detecting different anomaly locations is reduced

Engineering Contradiction:

Improveinstallation simplicityVSAvoidsensor placement flexibility

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent implements a reconfigurable electrode array system where the positions of electrodes can be dynamically adjusted along the concrete structure. The system includes multiple electrodes that can be moved to different locations, allowing the same testing equipment to adapt to various anomaly locations and structural configurations, thereby combining installation simplicity with detection versatility.

Inventive Principle:

Principle #15Dynamics

3Manufacturing precision

If non-interchangeable sensors are used, then calibration is simplified, but replacement and maintenance time increases

Engineering Contradiction:

Improvecalibration accuracyVSAvoidmaintenance time

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent employs interchangeable sensors that conform to standardized interfaces and protocols. Multiple sensors with identical specifications can be used throughout the system, allowing any sensor to replace any other without recalibration. This universality maintains measurement consistency while enabling rapid replacement of defective sensors, reducing maintenance time while preserving calibration accuracy.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Productivity

If real-time data processing is implemented, then immediate anomaly detection is achieved, but computational requirements and system complexity increase

Engineering Contradiction:

Improvedetection speedVSAvoidsystem complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent incorporates onboard processing capabilities within the testing system itself, enabling real-time calculation of electrical resistivity from raw voltage and current measurements. The system automatically processes data as it is collected, performs anomaly detection algorithms, and generates results without requiring external computational resources, thereby achieving immediate detection while managing system complexity through integrated processing.

Inventive Principle:

Principle #25Self-service

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, non-destructive, and real-time detection and localization of subsurface anomalies, reducing installation time and improving measurement accuracy by allowing flexible sensor placement and dynamic data processing.

Implementation Method 1

Raw resistivity data is collected by a reconfigurable network of sensors that distributes current and measures voltage

Methodology Applied

Scientific EffectElectrical resistivity: Electrical Resistance

Data Source

PatentUS8321160B2Remotely reconfigurable system for mapping subsurface geological anomalies

Publication Date: 2012.11.27 EARTHSYSTEMS TECHNOLOGIES OPERATING LLC

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.