Magnet Sensor Unit Temperature Compensation
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Solution Overview
Problem
Magnetic field-sensitive sensor units with movable permanent magnets face impairments in detection accuracy due to temperature-related changes in magnetic field strength, which are not effectively compensated by existing technologies.
Innovation Solution
Incorporating a temperature sensor and storing magnetic field temperature compensation data in the parameter memory, allowing the computer to process output data and compensate for temperature-related changes in the magnetic field, thereby enhancing detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If temperature compensation is not implemented, then the device structure remains simple, but measurement precision deteriorates due to temperature-related changes in magnetic field strength
Solution Approach 1:
A temperature sensor is introduced as an intermediary component to detect temperature changes and provide data to the computer for compensation calculations. This mediator enables the system to measure and compensate for temperature effects without fundamentally redesigning the magnetic field sensing mechanism, thus improving measurement precision while adding only minimal structural complexity.
Solution Approach 2:
The system changes the operational parameter by incorporating temperature as an additional measurement parameter. The computer uses temperature data from the temperature sensor to adjust and compensate the magnetic field measurements, transforming a single-parameter system into a multi-parameter compensation system that maintains accuracy across varying temperature conditions.
2Measurement precision
If temperature compensation is implemented, then measurement precision improves, but device complexity increases due to additional temperature sensor and compensation mechanisms
Solution Approach 1:
The computer serves multiple functions: it processes magnetic field data from the sensor element, reads temperature data from the temperature sensor, performs compensation calculations, and outputs corrected measurement values. By making the computer multi-functional, the system achieves temperature compensation without adding separate dedicated compensation hardware, thus improving measurement precision while limiting the increase in device complexity.
Solution Approach 2:
The temperature compensation function is merged with the existing data processing operations in the computer. Rather than implementing compensation as a separate standalone mechanism, the compensation calculations are integrated into the computer's existing data processing workflow, combining multiple functions into a single processing unit and reducing overall system complexity.
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
Significantly improves measurement accuracy by accounting for temperature-induced changes in magnetic field strength, ensuring precise output data and higher system performance.
Implementation Method 1
The sensor unit (1) has at least one temperature sensor (6) for temperature detection
Implementation Method 2
The variable sensed by the sensor unit is determined on the basis of the magnetic field strength detected by the at least one sensor element of the sensor unit from the permanent magnet assigned to the sensor unit
Data Source
Figure 1
AI summary
The invention relates to a magnetic field-sensitive sensor unit configured to interact with at least one permanent magnet movable relative to the sensor unit, wherein the sensor unit comprises at least one magnetic field-sensitive sensor element, at least one computer, at least one parameter memory for storing setting parameters of the sensor unit, and at least one output interface, wherein the computer is configured to read magnetic field data detected by the sensor element due to the magnetic field of the permanent magnet and to process it into output data taking into account setting parameters of the parameter memory, and to output the output data via the output interface, wherein the sensor unit comprises at least one temperature sensor for temperature detection and magnetic field temperature compensation data are stored in the parameter memory, wherein the computer is configured toThe invention relates to processing the magnetic field data read by the sensor element, taking into account the temperature detected by the temperature sensor and the magnetic field temperature compensation data, into output data such that temperature-related changes in the magnetic field of the permanent magnet are at least substantially compensated in the output data. The invention also relates to the use of such a sensor unit.