Geophysical Sinkhole Detection via Distributed Node Displacement
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Solution Overview
Problem
Ground instability at drilling sites can lead to unpredictable sinkhole formation, posing hazards to personnel, assets, and infrastructure, as existing methods fail to effectively detect early signs of sinkhole formation.
Innovation Solution
A system comprising geographically distributed nodes with sensors and a base station that detect displacement and pose changes, generating state data to create a geophysical map and alert users to potential sinkhole formation, utilizing a combination of GPS, accelerometers, magnetometers, and other sensors to transmit data for real-time monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional site survey techniques are used, then the method is simple and low-cost, but the detection precision and reliability of sinkhole formation are insufficient
Solution Approach 1:
The system divides the monitoring area into multiple zones with geographically distributed nodes, each independently measuring local ground conditions. This segmentation allows comprehensive coverage with modular, manageable units that can be deployed incrementally, resolving the contradiction between detection precision and system complexity.
Solution Approach 2:
Each node is designed as a multi-functional unit that simultaneously performs GPS positioning, acceleration measurement, and tilt sensing. This universal design consolidates multiple measurement functions into single integrated nodes, improving overall detection precision without proportionally increasing system complexity.
2Reliability
If multiple sensors are deployed at each node, then the measurement precision and reliability improve, but the device complexity and cost increase
Solution Approach 1:
The patent combines GPS receiver, accelerometer, and tilt sensor into integrated node assemblies that function as unified measurement units. This merging approach improves reliability through redundant multi-parameter measurement while controlling node complexity through integrated design and centralized data processing.
Solution Approach 2:
The system implements continuous feedback loops where sensor data from multiple sources is constantly monitored, cross-validated, and used to adjust monitoring parameters. This feedback mechanism enhances reliability by detecting anomalies across multiple sensor types while managing complexity through automated data fusion algorithms.
3Productivity
If real-time monitoring is implemented across the entire site, then the productivity of hazard detection improves, but the energy consumption and operational costs increase
Solution Approach 1:
The system employs periodic sampling of sensor data at optimized intervals rather than continuous monitoring. This periodic action maintains high detection productivity for critical events while significantly reducing energy consumption during stable conditions, with automatic rate adjustment based on detected ground motion levels.
Solution Approach 2:
The monitoring system dynamically adjusts its operational mode based on detected ground conditions, transitioning between low-power standby and high-rate monitoring states. This dynamic operation maintains rapid detection capability when needed while minimizing energy consumption during normal conditions, resolving the productivity-energy contradiction.
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 early detection and prediction of sinkhole formation, allowing for timely evacuation and remedial actions, reducing risks and costs by providing a sensitive and proactive monitoring solution that supplements existing site survey techniques.
Implementation Method 1
a global positioning system (GPS) sensor
Implementation Method 2
an accelerometer
Implementation Method 3
a magnetometer
Implementation Method 4
a gyroscope
Implementation Method 5
a Doppler measurement device
Implementation Method 6
a tilt sensor
Implementation Method 7
a barometric pressure change measurement device
Data Source
AI summary
A system and method detect an evolving sinkhole due to displacement and pose changes of a plurality of nodes distributed geographically. The system comprises a base station, a plurality of nodes, and a user device. The plurality of nodes are distributed geographically, with each node secured into the ground on the Earth's surface. A sensor senses a state of the nodes relative to the ground, including a displacement and pose changes of the nodes relative to the ground. The sensed states of the nodes used to generate a geophysical map of the ground, including the displacement and the pose change of at least one node due to an evolution of a sinkhole. An output device is configured to display the geophysical map and the sinkhole to a user.