Roofing Membrane Leak Detection Shielding Grounding Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing leak detection systems in waterproofing membranes often falsely identify grounding elements as leaks, particularly in situations with conductive overburdens like soil with conduits or concrete tied to a grounded structure, leading to inaccurate leak location.
Innovation Solution
A system incorporating a detector array with a boundary wire loop, sensors, and a flexible non-conductive over-membrane that shields the detector array from grounding interference, along with a conductive felt to maintain an even electrical field, preventing false leak indications by distinguishing between membrane leaks and grounding anomalies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electrical testing methods are used to detect leaks in membranes, then leak detection capability is improved, but false positives occur when conductive grounding elements are present in the overburden layer
Solution Approach 1:
The system segments the detection process into two distinct phases: a training phase where the system learns to distinguish genuine leaks from grounding elements, and a detection phase where the trained model is applied. This segmentation allows the system to improve reliability by separately optimizing for false positive reduction without compromising detection capability.
Solution Approach 2:
The system performs preliminary training before actual leak detection by collecting data from known grounding elements and genuine leaks during a training phase. This preliminary action establishes a reference model that enables the system to differentiate between grounding elements and actual leaks during subsequent detection operations, thereby reducing false positives while maintaining detection accuracy.
2Productivity
If traditional leak detection systems are deployed, then simple membrane testing is effective, but the system fails when conductive elements like conduits or lightning cables are present
Solution Approach 1:
The system changes the electrical parameters during operation by applying different voltage levels and measuring corresponding current responses. By varying these electrical parameters and analyzing the relationship between voltage and current, the system can distinguish between grounding elements and genuine leaks, thereby improving adaptability to complex environments with conduits and lightning cables while maintaining detection efficiency.
Solution Approach 2:
The system incorporates feedback mechanisms where the measured current responses are compared against trained models to iteratively improve detection accuracy. The feedback loop allows the system to learn from measurements and adjust its classification decisions, enabling it to handle diverse scenarios including those with conductive overburden elements without sacrificing productivity.
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
The system effectively locates leaks in waterproofing membranes while avoiding false positives from conductive overburdens, ensuring accurate detection and location of leaks even in complex scenarios with grounded elements.
Implementation Method 1
The boundary wire loop surrounds the area to be tested, generates electrical tension on the surface of the membrane
Implementation Method 2
The sensors are laid out in a grid, or sensor array, and are placed on top of an impermeable roofing or waterproofing membrane... Each sensor communicates individually with the computer and the signals from the sensors are used by the computer to perform vector mapping that detects and locates leaks through the membrane
Data Source
AI summary
A system for detecting and locating a leak through a membrane that includes a detector array, a signal generator, a flexible sheet over-membrane, a conductive felt, and a computer. The detector array includes a boundary wire loop and sensors. The signal generator applies voltage to the boundary wire loop. The conductive felt is applied on top of the detector array. The flexible sheet over-membrane is applied on top of the conductive felt. At least the downward, detector array-facing side of the over-membrane is non-conductive. The computer is in electrical communication with the boundary wire loop, the sensors, and the signal generator.