Hall Probe Vacuum Sealing and High Voltage Insulation
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Solution Overview
Problem
Existing Hall probes are not well-suited for measuring magnetic fields in vacuum environments and high voltage areas due to sensitivity to temperature variations and lack of insulation, leading to inaccurate measurements.
Innovation Solution
A Hall probe with a Hall effect sensor element enclosed in an electrically insulated glass tube, providing vacuum tight sealing and high voltage insulation, allowing precise measurement of magnetic fields in challenging environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a Hall effect sensor is used to measure magnetic fields, then magnetic field strength can be detected, but the sensor becomes sensitive to temperature variations leading to measurement inaccuracies
Solution Approach 1:
The patent introduces a temperature compensation circuit as an intermediary element that mediates between the Hall effect sensor and the measurement output. This circuit actively measures temperature variations and compensates for their effect on the magnetic field measurements, thereby resolving the contradiction between maintaining measurement accuracy and dealing with temperature sensitivity.
2Adaptability or versatility
If existing Hall probes are used in vacuum environments and high voltage areas, then magnetic field measurement is possible, but the probes lack adequate insulation leading to unreliable operation
Solution Approach 1:
The patent employs composite material construction for the probe housing, combining electrically insulating materials with mechanical strength properties. This composite structure provides both the environmental adaptability needed for vacuum and high voltage conditions while maintaining operational reliability through adequate electrical insulation and structural integrity.
3Temperature
If a Hall probe is designed for extreme temperature resistance, then it can withstand temperature variations from -273°C to +200°C, but it becomes unsuitable for vacuum environments and high voltage areas
Solution Approach 1:
The patent designs the Hall probe with multi-functional capabilities by integrating features that simultaneously address temperature resistance, vacuum compatibility, and high voltage insulation. The probe incorporates specialized insulation materials and sealing mechanisms that enable it to function reliably across multiple extreme environments, achieving universality rather than sacrificing environmental compatibility for temperature tolerance.
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 Hall probe offers improved precision and reliability in measuring magnetic fields in high voltage and vacuum environments, enabling stable secondary ion signal detection in SIMS devices with precise control of magnetic fields.
Implementation Method 1
A Hall effect sensor is a transducer that varies its output voltage in response to a magnetic field. The force exerted by the magnetic field on moving electrons of an electric current flowing through an electrical conductor in a magnetic field pushes the moving electrons to one side of the conductor, thus building up an excess of negative electrical charges on this side of the conductor and producing subsequently a voltage between those two sides.
Data Source
AI summary
A Hall probe comprising a Hall effect sensing element. The probe is capable of precisely measuring the strength of a magnetic field in high-voltage and vacuum environments.