Geomagnetic Sensor Compensation via Temperature Linear Fitting
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Solution Overview
Problem
Conventional methods for compensating geomagnetic sensing data in electronic devices require specialized equipment and can result in significant compensation errors due to environmental differences between measurement and actual use conditions.
Innovation Solution
An electronic device with a memory and processor that stores temperature and geomagnetic value variations, performs linear fitting, computes errors, and determines a compensation scheme to adjust geomagnetic values based on detected temperature changes in heating areas, allowing for precise compensation without prior geomagnetic sensor information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods are used to compensate for geomagnetic sensing data by initially measuring compensation data during development, then compensation can be performed, but specialized equipment is required and significant compensation errors occur due to environmental differences
Solution Approach 1:
The electronic device performs self-diagnosis and self-compensation by using its own temperature sensors and geomagnetic sensor to collect data and generate compensation information autonomously, eliminating the need for external specialized equipment
Solution Approach 2:
The system changes the parameter being measured from static initial compensation data to dynamic temperature-geomagnetic correlation data, allowing the device to adapt to varying environmental conditions by continuously monitoring temperature changes and their corresponding effects on geomagnetic sensor readings
2Reliability
If initial compensation data is measured during development, then compensation can be applied, but significant compensation errors occur due to environmental differences between measurement and actual use
Solution Approach 1:
The system establishes a feedback loop where temperature data from temperature sensors is correlated with geomagnetic sensor data, and this correlation information is used to dynamically adjust and refine compensation values based on actual operating conditions
Solution Approach 2:
The compensation system transitions from static initial compensation values to dynamic compensation that adapts in real-time to environmental changes by continuously monitoring temperature variations and their impact on geomagnetic readings across different heating areas
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 accurate and reliable geomagnetic sensing data compensation by applying different compensation equations to each axis of the geomagnetic sensor, reducing errors and improving performance across varying environmental conditions.
Implementation Method 1
perform linear fitting using the temperature and the variation in the geomagnetic value stored in the memory
Data Source
AI summary
Disclosed are an electronic device for compensating for geomagnetic sensing data and a method for controlling the same. According to an embodiment of the disclosure, an electronic device may include a processor configured to store, in a memory, a temperature of each of a plurality of heating areas and a variation in a geomagnetic value sensed by a geomagnetic sensor, perform linear fitting using the temperature and the variation in the geomagnetic value, compute an error between the variation in the geomagnetic value and an estimated value for the variation in the geomagnetic value, based on a result of the linear fitting, determine a scheme for compensating for the geomagnetic value based on the computed error, and compensate for the geomagnetic value sensed by the geomagnetic sensor using the determined scheme when a variation in temperature is detected for at least one heating area in the plurality of heating areas.