Electromagnetic Field Probe with Orthogonal Loops
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Solution Overview
Problem
Conventional electromagnetic field probes, such as those with combined orthogonal loops, struggle to detect currents on wiring lines at angles like 135 degrees without changing the probe's orientation, as induced currents cancel each other out.
Innovation Solution
An electromagnetic field probe with a continuous conductor line and 2N radially extending conductors, where N is an integer greater than or equal to 3, forming a non-short-circuited loop with terminals at both ends, allowing for detection of currents on wiring lines at various angles like 0, 45, 90, and 135 degrees without orientation changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-plane loop antenna is used, then the structure is simple, but the probe can only detect currents when the loop surface is perpendicular to the wiring line direction
Solution Approach 1:
The single loop is divided into two orthogonal loops that share a common conductor. This segmentation allows each loop to be sensitive to magnetic flux in different directions, enabling detection of currents at various angles without changing the probe orientation.
Solution Approach 2:
The invention transitions from a two-dimensional single-plane loop to a three-dimensional orthogonal loop structure. By adding the vertical dimension with the second loop perpendicular to the first, the probe gains the ability to detect magnetic flux from multiple directions simultaneously.
2Adaptability or versatility
If two orthogonal loops are combined, then currents in two orthogonal directions can be detected, but induced currents cancel each other out at certain angles like 135 degrees
Solution Approach 1:
Different portions of the loop structure are assigned different functions. The first loop is optimized for detecting magnetic flux in one direction, while the second loop is optimized for the orthogonal direction. The common conductor portion is specifically designed to carry induced currents from both loops without causing cancellation effects.
Solution Approach 2:
The invention uses asymmetric loop configurations where the two loops have different orientations and are connected in a non-symmetric manner. This asymmetry prevents the induced currents from canceling each other out at certain angles, as the current paths and magnetic flux interactions are no longer symmetric and destructive.
3Ease of operation
If the loop orientation is fixed, then the device is easy to operate, but it cannot detect currents on wiring lines at all orientations
Solution Approach 1:
The orthogonal loop structure makes the probe universal in its detection capability. Instead of requiring different probe orientations for different wiring line angles, the fixed orthogonal loops can detect currents at multiple angles simultaneously, making the probe adaptable to various wiring configurations without operational changes.
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 detection of currents on board wiring lines in multiple directions without adjusting the probe's orientation, ensuring effective current measurement across various angles.
Implementation Method 1
by disposing the loop antenna such that a magnetic flux generated from a measurement target passes through a loop surface, an induced current is generated in a loop
Data Source
AI summary
An electromagnetic field probe includes one continuous conductor line having terminals at both ends of the one continuous conductor line and including 2N (N is an integer greater than or equal to 3) conductors radially extending from a point near the center of the electromagnetic field probe, the one continuous conductor line being not short-circuited in the middle and being formed by connecting an end portion of a conductor included in the 2N conductors to an end portion of another conductor included in the 2N conductors, and two conductors included in the 2N conductors are disposed at positions at which the two conductors face each other with the point near the center present between the two conductors, and end portions of the two conductors close to the point near the center are connected to each other.