Single-Sensor Magnetic-Field Current Measurement at Multi-Conductor Nodes
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Solution Overview
Problem
Existing current measuring devices are time-intensive or costly when measuring currents in multiple conductors, and there is a need for a cost-effective solution that can rapidly and precisely measure both the magnitude and direction of currents in a plurality of conductors.
Innovation Solution
A magnetic-field-based current measuring device with a two-dimensionally measuring magnetic field sensor mounted at a node where multiple conductors converge, allowing simultaneous determination of current magnitude and direction using vectorial magnetic field measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple current measuring devices are connected to respective conductors to measure currents simultaneously, then measurement precision and speed are improved, but device complexity and cost increase
Solution Approach 1:
The patent combines multiple current measuring functions into a single current measuring device. The device includes a first current measuring unit that measures currents in first and second conductors, and a second current measuring unit that measures currents in second and third conductors. By merging these measurement capabilities into one device, the patent reduces the number of separate devices needed while maintaining the ability to measure currents in multiple conductors simultaneously, thus reducing device complexity and cost while preserving measurement precision.
Solution Approach 2:
The current measuring device is designed with multi-functionality to measure currents in multiple conductors. The first current measuring unit can measure currents in both the first and second conductors, while the second current measuring unit can measure currents in both the second and third conductors. This universal design allows a single device to perform multiple measurement functions that would traditionally require separate devices, thereby reducing overall system complexity and cost while maintaining measurement capabilities.
2Device complexity
If current measuring devices are connected successively to individual conductors, then device complexity is reduced, but measurement time increases
Solution Approach 1:
The patent merges multiple measurement functions into a single device that can measure currents in multiple conductors simultaneously. The first current measuring unit measures currents in the first and second conductors while the second current measuring unit measures currents in the second and third conductors. This combined approach allows all conductors to be measured at the same time without requiring successive connections, thus reducing measurement time while maintaining relatively simple device architecture.
Solution Approach 2:
The current measuring device enables continuous measurement of currents in all conductors simultaneously rather than requiring sequential measurement. The first and second current measuring units operate concurrently to measure currents in different conductors at the same time. This continuous simultaneous measurement approach eliminates the time loss associated with successive connections while keeping the device structure relatively simple.
3Measurement precision
If precise current measurement is performed in multiple conductors, then measurement accuracy is improved, but production cost increases
Solution Approach 1:
The patent combines multiple precise measurement functions into a single integrated device. The first current measuring unit provides precise measurement of currents in the first and second conductors, while the second current measuring unit provides precise measurement of currents in the second and third conductors. By merging these functions, the patent achieves precise measurement of currents in multiple conductors without the need for multiple separate expensive devices, thus reducing production cost while maintaining measurement accuracy.
Solution Approach 2:
The current measuring device is designed as a universal multi-functional device that can accurately measure currents in multiple conductors. The first and second current measuring units are integrated into a single device structure, allowing precise measurement of currents in all three conductors. This universal design reduces the total number of components and devices needed, thereby reducing production costs while maintaining the precision required for accurate current measurement in each conductor.
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
This approach reduces production costs and enables rapid, precise measurement of currents in multiple conductors by using a single sensor, facilitating efficient current detection and diagnosis in complex systems.
Implementation Method 1
a magnetic-field-based current measuring device which can be used to ascertain electric currents in conductors, specifically based on a measurement of the magnetic fields induced by the flowing currents
Data Source
AI summary
The innovative concept described herein relates to a magnetic-field-based current measuring device. The latter includes, inter alia, an at least two-dimensionally measuring magnetic field sensor mounted at a node at which a first, a second and a third electrical conductor, each coming from different directions, are brought together. The magnetic field sensor is configured to determine in each case a magnitude and/or a direction of the magnetic fields which are respectively generated in the first, second and third electrical conductors and meet at the node, and to derive, on the basis thereof, information about a magnitude and/or a direction of the individual electric currents flowing at the node. The innovative concept described herein additionally relates to a corresponding method for magnetic-field-based measurement of electric currents using a magnetic-field-based current measuring device.