Wireless Power Control Using Proximity-Based Power Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices face challenges in efficiently managing wireless power transmission due to low signal-to-noise ratios caused by unnecessary power restrictions to comply with electromagnetic wave exposure standards, leading to ineffective communication when a human body is in close proximity.
Innovation Solution
An electronic device equipped with a transceiver, measurement circuit, converter, and controller that detects the presence of an object using frequency domain data of transmission/reception power ratios, adjusting transmission power based on detection to comply with exposure standards and enhance communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If transmission power is reduced to comply with electromagnetic wave exposure standards, then human body safety is improved, but signal-to-noise ratio deteriorates
Solution Approach 1:
The system performs preliminary detection of human body proximity using a sensor before transmission occurs. Based on this advance detection, the controller pre-adjusts the transmission power to appropriate levels, preventing both excessive exposure and unnecessary power reduction that would degrade signal quality
Solution Approach 2:
The system continuously monitors transmission conditions and adjusts power levels dynamically based on real-time feedback from proximity sensors. When a human body is detected within a predetermined distance, the system feedback-controls the transmission power to comply with exposure standards; when no human body is present, power is increased to maintain optimal signal-to-noise ratio
2Object-affected harmful factors
If transmission power is restricted without detecting human body presence, then exposure standard compliance is ensured, but communication effectiveness deteriorates
Solution Approach 1:
The system dynamically adjusts transmission power based on real-time detection of human body presence. The power level is not fixed but changes adaptively: reduced when a human body is detected within the predetermined distance to ensure exposure compliance, and increased when no human body is present to maximize communication effectiveness
Solution Approach 2:
The system changes the transmission power parameter based on detection results. When the sensor detects a human body within the predetermined distance, the power parameter is changed to a lower level for safety compliance; when no human body is detected, the power parameter is changed to a higher level for optimal communication performance
Data Source
AI summary
An electronic device is provided. The electronic device includes: a transceiver configured to transmit and receive a wireless signal; and a processor configured to: control a measurement circuit to identify a transmission/reception power ratio of the wireless signal; control a converter to transform the transmission/reception power ratio into frequency domain data; detect whether an object is adjacent the electronic device, based on the frequency domain data and an adjustable threshold; and control the transceiver based on whether the object is detected adjacent the electronic device.