User Terminal Electromagnetic Exposure Measurement and Warning
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Solution Overview
Problem
There is a public concern about exposure to electromagnetic waves from various sources, including mobile communication base stations and wireless devices, as existing methods lack accurate and user-friendly ways to measure and assess exposure levels, leading to anxiety and uncertainty.
Innovation Solution
A user terminal and method that analyze signals from various wireless services to measure electric fields and specific absorption rates (SAR), providing exposure indices and warnings when these exceed human body protection standards, allowing users to assess their electromagnetic wave exposure levels conveniently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If professional organizations measure electromagnetic wave exposure, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The user terminal itself performs the measurement of electromagnetic wave exposure using its built-in reception function, eliminating the need for external professional measurement devices. The terminal measures signals from wireless services and calculates exposure indices autonomously, making the system self-sufficient and removing complex external measurement equipment.
Solution Approach 2:
The patent uses the user terminal's existing signal reception capability to copy or simulate the function of professional electromagnetic wave measurement devices. By processing communication signals already received for normal usage, the terminal derives exposure information without requiring separate specialized measurement hardware.
2Measurement precision
If multiple wireless services are monitored, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent combines measurements from multiple wireless services (mobile communication, WiFi, broadcasting) into a single integrated exposure index. By merging signal reception and processing functions across different service types, the system achieves comprehensive exposure assessment without proportionally increasing complexity, as the same hardware resources are utilized for multiple measurement purposes.
3Reliability
If exposure information is provided in real-time, then reliability is improved, but use of energy increases
Solution Approach 1:
The system continuously monitors electromagnetic wave exposure by leveraging the ongoing signal reception that already occurs during normal terminal operation. Since the terminal must continuously receive signals for communication services anyway, the exposure measurement utilizes this continuous useful action without requiring additional energy-intensive measurement operations.
Data Source
AI summary
A method of providing an amount of exposure to electromagnetic waves, and a user terminal are provided. The method may include receiving a signal of each of a plurality of wireless services, extracting a measured electric field and a reference level of electric field strength from a signal associated with each of the plurality of wireless services, and determining an exposure index of each of the plurality of wireless services, based on the measured electric field and the reference level of electric field strength, the exposure index being measured outside a body of a user.