Coreless Current Sensor Housing for Calibration-Free Alignment
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Solution Overview
Problem
Coreless current sensors require complex and time-consuming calibration processes to achieve precise alignment with electrical conductors, which increases production costs and maintenance requirements.
Innovation Solution
A device comprising a housing with a through-opening and a holding mechanism to securely position the coreless sensor relative to the electrical conductor, ensuring precise alignment and reducing the need for calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If coreless sensors are calibrated to achieve precise alignment with electrical conductors, then measurement precision is improved, but device complexity and production time increase
Solution Approach 1:
The sensor is pre-positioned within the housing at a predetermined distance from the through-opening before the electrical conductor is inserted. This preliminary positioning eliminates the need for post-insertion calibration, as the sensor is already in the correct relative position to detect current accurately.
Solution Approach 2:
The housing structure with its through-opening and predetermined sensor position acts as an intermediary mechanism that ensures correct alignment. The housing serves as a mediator between the sensor and the electrical conductor, providing a fixed geometric relationship that eliminates calibration needs.
2Measurement precision
If calibration processes are implemented for coreless sensors, then measurement accuracy is improved, but production time and costs increase
Solution Approach 1:
The sensor positioning is completed during manufacturing by pre-placing the sensor at the correct distance from the through-opening. This eliminates the time-consuming calibration step that would otherwise be required after conductor insertion, thereby reducing production time while maintaining measurement accuracy.
3Ease of operation
If the sensor is freely positioned relative to the electrical conductor, then ease of operation is improved, but measurement reliability deteriorates due to positioning errors
Solution Approach 1:
The housing with its through-opening serves as an intermediary structure that guides the electrical conductor into the correct position while allowing easy insertion. The predetermined sensor position relative to the through-opening ensures measurement reliability is maintained even though the conductor can be easily inserted without complex alignment procedures.
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 accurate sensor positioning, reducing the need for calibration, lowering production and maintenance costs, and enhancing measurement reliability and efficiency.
Implementation Method 1
coreless sensors are calibrated... the magnetic field induced by the electrical current is optimal for current measurement
Data Source
AI summary
Examples described herein relate to a device for positioning a coreless sensor relative to an electrical conductor carrying an electric current in a current flow direction, comprising a housing delimiting an interior space for receiving the coreless sensor, a through-opening passing through the housing in the current flow direction, into which the electrical conductor is form-fit insertable transverse to the current flow direction, and a holding device, arranged in the interior space at a predetermined distance transverse to the current flow direction, for holding the coreless sensor in a predetermined position relative to the through-opening.