Separated Multi-Core Transmitting Coil for Ground Transient Electromagnetic Methods
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Solution Overview
Problem
Existing transient electromagnetic devices for deep probing, such as metal ore exploration, are cumbersome and difficult to deploy in complex surface environments due to their large size and weight, limiting their efficiency and adaptability.
Innovation Solution
A separated multi-core transmitting device based on a ground transient electromagnetic method, featuring a rectangular transmitting coil composed of interconnected cables with adjustable lengths and core counts, allowing for flexible deployment and adaptation to different detection depths and environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a multi-turn winding method is used with a small side length to enhance transmitting magnetic moment, then probing depth is improved, but device weight increases and mobility decreases
Solution Approach 1:
The transmitting coil is divided into multiple separate cable segments (cable I, cable II, cable III, cable IV) that can be independently handled and connected. Each cable has manageable length and weight, but when connected in series they form a large-area coil for deep probing, resolving the contradiction between deep probing requirement and device mobility
2Length of stationary object
If the count of transmitting coil turns is increased to enhance transmitting magnetic moment, then probing depth is improved, but device complexity and deployment difficulty increase
Solution Approach 1:
The coil structure is segmented into multiple detachable cable sections with standardized connectors. Each cable contains multiple wires that can be connected in series to achieve the desired number of turns and large coil area for deep probing, while maintaining manageable individual component complexity
Solution Approach 2:
The transmitting coil configuration is made dynamic and adjustable through detachable connectors. The cable sections can be connected in different configurations (series, parallel, or combinations) to adapt to different probing depth requirements and ground conditions, reducing deployment complexity
3Measurement precision
If transmitting current is increased to improve signal-to-noise ratio, then detection capability is improved, but energy consumption increases
Solution Approach 1:
Instead of solely increasing current, the patent changes the geometric parameter (coil area) by connecting multiple cables to form a larger loop. This increases the transmitting magnetic moment and signal strength through the larger area, achieving improved signal-to-noise ratio with moderate current levels and reduced energy consumption
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 enhances working efficiency by allowing for easier deployment in complex environments, improves signal-to-noise ratio, and achieves deeper probing depths while minimizing construction challenges.
Implementation Method 1
a transient electromagnetic device based on the TEM consists of a transmitting coil and a receiving probe. In the transient electromagnetic theory, achieving a deeper probing requires a larger side length of the transmitting coil or an increase of a count of transmitting coil turns
Data Source
AI summary
Disclosed is a separated multi-core transmitting device based on a ground transient electromagnetic method, comprising: a rectangular transmitting coil enclosed by a cable I, a cable II, a cable III, and a cable IV. Each of the cable I, the cable II, the cable III, and the cable IV is provided with N wires. Two ends of each of the N wires is provided with a sub connector and a female connector, respectively. The sub connectors and the female connectors are detachably connected through sub connector interfaces and female connector interfaces. A first wire of the female connectors of the cable I is led out to serve as a positive electrode of a transient electromagnetic instrument transmitter, and a last wire of the sub connectors of the cable IV is led out to serve as a negative electrode of the transient electromagnetic instrument transmitter.