Radiation Power Control Using Multiple Thresholds for Proximity Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional radiation power control methods for electronic devices adjust antenna radiation power based on a single threshold value, leading to insufficient transmission and reception performance when a user is at a distance, as the change in capacitance is not constant when approaching or leaving the device.
Innovation Solution
A method that uses multiple threshold values to detect user proximity and adjust antenna radiation power, allowing for dynamic power setting based on entry and withdrawal thresholds to optimize communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single threshold value is used to control radiation power, then the device complexity is reduced, but the communication performance deteriorates when the user is at a distance
Solution Approach 1:
The single threshold value is segmented into multiple threshold values (first threshold value and second threshold value) that differentiate between user approach and departure scenarios. This segmentation allows the system to apply appropriate radiation power adjustments for each scenario, resolving the contradiction by maintaining simplicity while improving communication reliability.
Solution Approach 2:
The system dynamically adjusts radiation power based on the direction of user movement (approach or departure) by comparing capacitance changes against multiple thresholds. This dynamic adjustment ensures communication performance is maintained during user departure while preventing excessive radiation during approach, resolving the reliability issue without requiring complex constant monitoring.
2Object-affected harmful factors
If radiation power is reduced to protect user from electromagnetic waves, then the harmful factors are reduced, but the transmission and reception performance deteriorates
Solution Approach 1:
The radiation power is dynamically adjusted based on the direction of user movement. When the user departs and capacitance decreases below the second threshold, radiation power is increased to maintain communication performance. When the user approaches and capacitance exceeds the first threshold, radiation power is reduced to protect from electromagnetic exposure. This dynamic approach resolves the contradiction by applying different power levels based on real-time user position and movement direction.
Solution Approach 2:
The system continuously monitors capacitance changes and uses feedback from sensor circuitry to adjust radiation power. The feedback mechanism compares current capacitance values against threshold values and automatically adjusts power settings, ensuring both user protection and communication performance are maintained appropriately.
3Productivity
If radiation power is increased to maintain communication performance, then the productivity is improved, but the harmful electromagnetic radiation increases
Solution Approach 1:
Radiation power is dynamically adjusted based on user proximity and movement direction. High power is applied only when necessary (user departed beyond second threshold), while low power is used when user is nearby (capacitance above first threshold). This resolves the contradiction by minimizing harmful radiation while maintaining communication efficiency only when truly needed.
4Device complexity
If conventional single threshold control is used, then the device complexity is low, but the radiation power is insufficient when user is sufficiently away causing poor communication
Solution Approach 1:
The control mechanism is segmented into multiple threshold levels (first and second threshold values) that provide granular control over radiation power adjustments. This segmentation enables the system to distinguish between partial and complete user departure scenarios, ensuring adequate communication performance at distance while maintaining relatively simple control logic.
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 approach ensures efficient communication by adjusting radiation power according to user proximity, maintaining adequate performance even when the user is at a distance, thereby improving data transmission and reception speeds.
Implementation Method 1
when a distance to a user is detected based on a change in a capacitance of a capacitor included in an electronic device
Data Source
AI summary
An electronic device includes: a sensor circuitry configured to generate information about a user's motion, at least one processor configured to determine a plurality of threshold values to be compared with a radiation power value and set the radiation power value associated with the determined plurality of threshold values, and an antenna configured to perform a communication in accordance with power.