Filtered Current Injection for Stable Magnetometric Structure Detection
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Solution Overview
Problem
Existing current generators for magnetometric detection methods are inaccurate, unstable, and unable to optimally vary injection frequency, leading to unusable measurements and errors due to inconsistent current characteristics, especially in outdoor conditions.
Innovation Solution
A device with input and output connection means, an inverter for generating direct voltage at a determined frequency, and filtering stages to stabilize and adjust current parameters, including capacitors and frequency filters, ensuring precise and adjustable current injection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If standard current generators are used for current injection, then the device is simple and easy to operate, but the current characteristics are inaccurate and unstable leading to measurement errors
Solution Approach 1:
The current generator is divided into multiple functional modules: voltage source module, frequency modulation module, amplification module, and filtering module. Each module performs a specific function to ensure precise current characteristics while maintaining operational simplicity through modular design.
Solution Approach 2:
The system incorporates feedback mechanisms where measurement results are used to adjust injection parameters in real-time. The processing means analyzes sensor data and modifies current injection characteristics to optimize measurement accuracy and compensate for environmental variations.
2Adaptability or versatility
If standard current generators are used, then the device is easy to operate, but the injection frequency cannot be optimally varied resulting in random structure responses
Solution Approach 1:
The system employs dynamic frequency modulation capabilities where the injection frequency can be varied optimally based on structure characteristics. The frequency modulation module allows adaptive adjustment while the processing means automates parameter selection to maintain ease of operation.
Solution Approach 2:
The system changes multiple parameters including frequency, voltage amplitude, and waveform characteristics to optimize current injection for different structure types. These parameter variations are controlled through integrated processing means that automatically adjusts settings based on measurement requirements.
3Adaptability or versatility
If standard current generators are used, then the device has simple design, but the voltage cannot be modified according to different parameters such as pipeline dimensions or interference conditions
Solution Approach 1:
The system features dynamic voltage adjustment capabilities through the amplification module, which can modify voltage levels according to pipeline dimensions and interference conditions. The processing means automatically adapts voltage parameters to match measurement requirements while maintaining a unified device design.
4Reliability
If standard current generators are used in outdoor conditions, then the device is simple, but moisture or impacts cause frequency drifts that cannot be compensated
Solution Approach 1:
The system incorporates protective measures against environmental effects including shielding against moisture and mechanical impacts. Frequency stabilization mechanisms are built-in to compensate for environmental drifts before they affect measurements, ensuring reliable outdoor operation.
Solution Approach 2:
The system uses feedback mechanisms to detect and correct frequency drifts caused by environmental factors. The processing means continuously monitors injection parameters and adjusts them to maintain stability despite outdoor conditions such as moisture or physical impacts.
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 device provides stable and adjustable current injection, improving sensor data quality and enabling efficient structure location and diagnosis by magnetometric sensors.
Implementation Method 1
a stage for converting the voltage supplied by the power supply comprising an inverter and processing means for generating a direct voltage at output according to at least one determined frequency
Implementation Method 2
a filtering stage for controlling the envelope of the current injected at the structure making it possible to obtain a response from the structure measurable by magnetometric sensors
Implementation Method 3
sensors record the magnetic signal transmitted by the ground comprising the structures to be detected
Implementation Method 4
a current is injected at a known position point of the structure... to generate a signal measurable by magnetometric sensors
Data Source
AI summary
The present invention relates to a device for injecting a current at a magnetic and/or metal structure to generate a signal measurable by magnetometric sensors, as well as an associated mapping device. The injection device includes: means for connecting at input to a power supply, means for connecting at output to electrical connection points of said structure, a stage for converting the voltage supplied by the power supply comprising an inverter and processing means for generating a direct voltage at output according to at least one determined frequency. A filtering stage controls the envelope of the current injected at the structure making it possible to obtain a response of the structure measurable by magnetometric sensors.