Autonomous Geophysical Survey Vehicle for Gravity-Magnetic Mapping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing geophysical survey methods, such as gravimetric and magnetometric prospecting, face limitations in accuracy and resolution due to the need for manual operation on the ground and separate data acquisition processes, which are restricted by physical constraints and provide ambiguous subsurface structure information.
Innovation Solution
A measurement vehicle equipped with geophysical sensors and operational sensors, capable of autonomous or remote-controlled navigation, allows simultaneous acquisition of gravity and magnetic field data, adapting to uneven terrains and varying altitudes, and incorporates data processing to adjust survey parameters for improved accuracy and resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If land surveys are performed by an operator in the field, then accurate high-resolution measurements are obtained, but the operator is limited by physical restrictions such as the amount of ground that can be covered and the height at which measurements can be taken
Solution Approach 1:
The patent combines gravimetric and magnetometric sensors into a single integrated measurement system mounted on an airborne vehicle. This merging allows simultaneous acquisition of both gravity and magnetic field data from the same platform, resolving the contradiction by achieving high-resolution measurements (from precise sensors) while expanding coverage area and measurement height (from airborne deployment)
Solution Approach 2:
The patent transitions from ground-based measurements to airborne measurements, adding the vertical dimension to the survey capability. This dimensional change allows the measurement system to operate at various altitudes, thereby expanding the coverage area and accessibility to difficult-to-reach locations while maintaining measurement precision through compensated positioning systems
2Productivity
If airborne vehicles are used to acquire measurements, then large areas can be covered quickly, but the measurements are of low resolution due to high altitudes
Solution Approach 1:
The patent employs a dynamic measurement system where the airborne vehicle can adjust its flight altitude and speed during data acquisition. The system dynamically optimizes the balance between coverage area and measurement resolution by varying operational parameters, allowing high-resolution measurements over specific targets while maintaining rapid coverage of larger regions
Solution Approach 2:
The patent changes the operational parameters of the measurement system by using highly sensitive gravimetric and magnetometric sensors that can detect field variations even at airborne altitudes. Additionally, the system varies flight parameters (altitude, speed, trajectory) to optimize the balance between productivity and measurement precision for different survey requirements
3Reliability
If gravimetric and magnetometric measurements are carried out separately, then each process provides solutions for subsurface structures, but the solutions are rarely unambiguous and unique
Solution Approach 1:
The patent merges gravimetric and magnetometric measurement processes into a single integrated survey operation. By simultaneously acquiring both types of geophysical data using co-located sensors on the same airborne platform, the system eliminates the need for separate survey processes while providing complementary information that leads to more reliable and unambiguous subsurface structure interpretations
Solution Approach 2:
The airborne measurement platform is designed with multi-functionality, capable of performing both gravimetric and magnetometric surveys simultaneously. This universal system replaces multiple specialized survey processes, reducing operational complexity while enhancing the reliability of subsurface characterization through integrated data acquisition
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
Enhances subsurface characterization by providing high-resolution, accurate geophysical data in challenging environments, reducing operational costs and improving data acquisition efficiency through autonomous operation and simultaneous measurement capabilities.
Implementation Method 1
Gravimetric prospecting is a geophysical technique which is able to identify anomalies in the gravity acceleration generated by contrasts in density among bodies in the subsurface
Implementation Method 2
Magnetometric prospecting involves measuring local anomalies in the Earth's magnetic fields
Data Source
AI summary
A measurement vehicle includes a geophysical sensor. One or more operational sensors are configured to detect operational data related to operation of the measurement vehicle. A driving system is configured to move the measurement vehicle in a travel direction relative to a measurement point. A controller is configured to receive information from the geophysical sensor and the operational sensors, and to control the driving system based on the information.