Dynamic Sensor Threshold Correction for Proximity Detection
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Solution Overview
Problem
Existing electronic devices, such as notebook computers, face misjudgments in determining the proximity of a human body due to changes in the relative position of components affecting the electromagnetic field, leading to improper adjustments in antenna transmission power.
Innovation Solution
A sensor correction method that identifies the angle value between the main screen and auxiliary screen of a notebook computer, dynamically adjusts the decision threshold based on this angle, ensuring accurate detection of human proximity and adjusting antenna power accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the antenna transmission power is adjusted based on a fixed decision threshold, then the device complexity is reduced, but the measurement precision of human body proximity detection deteriorates due to component position changes
Solution Approach 1:
The patent applies dynamics by transforming the fixed decision threshold into a dynamic one that adapts to component position changes. The decision threshold is no longer static but varies according to the angle between the first and second bodies, allowing the system to maintain high measurement precision across different configurations without requiring overly complex real-time recalibration mechanisms.
Solution Approach 2:
The patent changes the parameter of the decision threshold from a fixed value to a variable that depends on the angle between components. By introducing angle as a parameter that influences the threshold, the system achieves adaptive proximity detection that compensates for component position changes, thereby maintaining measurement precision without excessive complexity.
2Measurement precision
If the decision threshold is dynamically adjusted based on angle value, then the measurement precision of human body proximity detection is improved, but the device complexity increases
Solution Approach 1:
The patent implements feedback by using the angle detection result to adjust the decision threshold. The angle between the first and second bodies is measured, and this measurement feeds back into the threshold adjustment mechanism, creating a closed-loop system that automatically compensates for position changes and maintains high detection accuracy.
Solution Approach 2:
The patent introduces the angle value as an intermediary parameter that mediates between the physical component positions and the decision threshold. Rather than directly adjusting the threshold based on complex positional data, the angle serves as a simplified intermediary that captures the essential geometric relationship and translates it into threshold adjustments.
3Reliability
If the angle value is used to correct the sensor threshold, then the reliability of antenna power adjustment is improved, but the difficulty of detecting and measuring increases
Solution Approach 1:
The patent applies segmentation by separating the threshold adjustment process into distinct stages: first measuring the angle between components, then using that angle to determine the appropriate threshold. This segmentation allows each measurement task to be optimized independently, reducing overall complexity while improving reliability.
Data Source
AI summary
One embodiment provides a method, including: identifying, using at least one sensor, an angle value between a first body and a second body of an electronic device; determining, using a processor, whether the angle value between the first body and the second body is greater than a predetermined threshold value; and correcting, responsive to determining that the angle value between the first body and the second body is greater than the predetermined threshold value, a decision threshold. Other aspects are described and claimed.