Hall Sensor Remote Transmitter for Analog Meter Signal Conversion
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Solution Overview
Problem
Existing analog measuring devices face difficulties in converting their mechanical displays into electrical signals due to complex assembly and calibration processes, and existing methods are prone to disruptive influences from friction and coupling, making integration into process monitoring systems challenging.
Innovation Solution
A method using an application-specific integrated circuit with a Hall sensor to detect the magnetic flux density parallel to the surface, converting the angle of rotation of a pointer's magnet into a proportional electrical output signal, allowing for contactless conversion and simplifying the assembly process by mounting the circuit on a viewing window with external connections for power and signal pickup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical coupling assembly is used to convert analog display to electrical signals, then electrical output signals can be provided, but the assembly and calibration become very difficult
Solution Approach 1:
The patent replaces the mechanical coupling assembly with a magnetic field-based detection system. A magnet is attached to the pointer, and a Hall sensor detects the magnetic flux density to determine the pointer's angular position. This substitution eliminates the need for complex mechanical couplings and simplifies both assembly and calibration processes while maintaining reliable electrical signal output.
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the mechanical pointer and the electrical sensing system. The magnet on the pointer creates a magnetic field that the Hall sensor detects, allowing non-contact transmission of position information. This intermediary approach avoids direct mechanical coupling while enabling accurate position detection for electrical signal generation.
2Reliability
If mechanical coupling is used for conversion, then electrical signals can be obtained, but disruptive influences from friction and mass affect the signal
Solution Approach 1:
The patent eliminates mechanical coupling components that introduce friction and mass effects by using a magnetic field-based detection system. The Hall sensor detects the magnetic field from the pointer's magnet without physical contact, completely avoiding friction-induced disruptions and mass-related inertial effects that would otherwise corrupt the electrical output signal.
Solution Approach 2:
The patent extracts and removes the mechanical coupling elements from the system, retaining only the essential function of position detection. By taking out the mechanical transmission components, the system eliminates the harmful effects of friction and mass while preserving the ability to convert pointer position into electrical signals.
3Ease of operation
If Hall sensor is positioned parallel to the plane of rotation, then contactless detection is achieved, but positioning simplicity needs to be optimized
Solution Approach 1:
The patent designs the Hall sensor system to be universally applicable to various pointer configurations. The sensor is positioned parallel to the plane of rotation at a location where it can detect the magnetic flux density from the pointer's magnet regardless of the specific pointer design. This universal positioning approach simplifies installation while maintaining contactless detection capability across different applications.
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 solution enables straightforward integration of analog measuring devices into monitoring systems, providing reliable and standardized electrical signals independent of mechanical and electrical input positions, suitable for applications like pressure and temperature monitoring, with reduced susceptibility to disruptive influences.
Implementation Method 1
an application-specific integrated circuit with a Hall sensor that can detect the magnetic flux density parallel to the surface of the integrated circuit
Data Source
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Figure 3A~3B
AI summary
The method involves positioning an application-specific integrated circuit with a hall sensor, which is arranged for detecting a magnetic flux density parallel to a surface of the integrated circuit. An angle of rotation of magnets is measured by the application-specific integrated circuit with the hall sensor. Electric signals are output according to the angle of rotation of the magnets. The integrated circuit is attached to a viewing glass, which is arranged for mounting and/or assembling at the measuring device. Independent claims are also included for the following: (1) a remote transmitter for an analog measuring device (2) a measuring device comprising an angle of a rotation transmitter.