Magnetic Field Measurement Device With Movable Sensor Units
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Solution Overview
Problem
Existing magnetic field measurement devices with fixed relative positional relationships between sensor units require time-consuming recalibration when the positional relationship is changed, and calibration becomes impossible when an object is already positioned between the units.
Innovation Solution
A magnetic field measurement device with a moving mechanism that allows the relative positional relationship between sensor units to be changed, enabling easy identification of the new positional relationship without additional calibration, using magnetic field generating coils to facilitate measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the relative positional relationship between sensor units is changed, then measurement flexibility is improved, but calibration time increases significantly
Solution Approach 1:
The patent applies preliminary action by pre-storing multiple calibration result sets corresponding to different relative positional relationships between sensor units. When the positional relationship changes, the system automatically selects and applies the pre-stored calibration results corresponding to the new position, eliminating the need for time-consuming recalibration. This resolves the contradiction by preparing calibration data in advance for various possible configurations.
Solution Approach 2:
The patent replaces the mechanical calibration process (physically adjusting and measuring sensor positions) with an automatic information-based system. The calibration management unit automatically identifies the current positional relationship and selects appropriate calibration results from stored data, substituting manual mechanical calibration with automated data retrieval and application, thereby dramatically reducing calibration time while maintaining measurement accuracy.
2Measurement precision
If calibration is performed with an object positioned between sensor units, then measurement accuracy is improved, but calibration becomes impossible
Solution Approach 1:
The patent applies preliminary action by performing calibration operations in advance, before any objects are positioned between the sensor units. Multiple calibration result sets are pre-acquired for different positional relationships, ensuring that calibration data is available whenever needed, regardless of whether objects are present during measurement. This resolves the contradiction by separating the calibration phase (performed without objects) from the measurement phase (performed with objects).
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 efficient and accurate magnetic field measurements by allowing the device to adapt to changing positional relationships without the need for recalibration, improving measurement efficiency and flexibility.
Implementation Method 1
a second sensor unit having one or more magnetic sensors and one or more magnetic field generating coils
Data Source
AI summary
Disclosed herein is a magnetic field measurement device that includes a first sensor unit having one or more magnetic sensors, a second sensor unit having one or more magnetic sensors and one or more magnetic field generating coils, and a moving mechanism configured to change a relative positional relationship between the first and second sensor units.