Temperature Sensor Compensation for Internal Heat Noise
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Solution Overview
Problem
Temperature sensing systems in electronic devices are affected by internal heat-generating components, which introduce noise and inaccuracies in temperature measurements due to thermal energy dissipation, necessitating a correction technique to improve measurement accuracy.
Innovation Solution
The implementation of an internal heat-generating component noise correction technique that leverages multiple sensors and power management strategies to estimate and compensate for thermal noise, using power dissipation models and temperature compensation methods to adjust temperature sensor data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If temperature sensing systems are integrated into electronic devices with heat-generating components, then the device functionality is enhanced, but measurement precision deteriorates due to thermal noise from internal components
Solution Approach 1:
The patent divides the temperature sensing system into multiple independent temperature sensors positioned at different locations within the electronic device. This segmentation allows the system to distinguish between internal heat-generating components and external temperature sources by comparing readings from multiple sensors, thereby maintaining measurement precision while preserving device functionality.
Solution Approach 2:
The patent introduces computational processing as an intermediary between the raw temperature sensor readings and the final temperature measurement. The processor analyzes data from multiple sensors, applies algorithms to filter out thermal noise from internal components, and produces corrected temperature measurements, thus resolving the contradiction between integrated functionality and measurement accuracy.
2Measurement precision
If multiple temperature sensors are used to compensate for thermal noise, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent combines multiple temperature sensors and their processing functions into an integrated temperature sensing system that operates as a unified entity. By merging the sensors and centralizing the computational processing, the system achieves improved measurement precision while managing complexity through integration rather than proliferation of separate components.
Solution Approach 2:
The patent designs the temperature sensing system to perform multiple functions: measuring internal component temperatures, measuring external ambient temperatures, and compensating for thermal noise. This multi-functionality allows the system to achieve high measurement precision across different scenarios without requiring separate dedicated systems for each function, thereby controlling overall device 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
Enhances the accuracy of temperature measurements by reducing the impact of internal heat-generating components, enabling precise estimation of internal and external temperatures, including body temperature, through continuous and condition-dependent measurement correction.
Implementation Method 1
a first temperature sensor may be disposed within a housing of the electronic device and may be configured to detect a first temperature
Implementation Method 2
the processor may dissipate thermal energy. This dissipated thermal energy may influence measurements acquired by a temperature sensing system
Implementation Method 3
the thermal energy may cause a temperature measurement to fluctuate based on the thermal energy
Data Source
AI summary
An internal heat-generating component noise correction technique can be used to improve accuracy of temperature sensing. In some examples, a method includes at an electronic device including a first temperature sensor and a first heat-generating component, measuring a first temperature using the first temperature sensor, and in accordance with a determination that one or more criteria are satisfied, compensating the first temperature based on a first estimate of heat generated by the first heat-generating component to generate a second temperature, and estimating a third temperature external to the electronic device using the second temperature.