RF Power Interrupter Control for Worker Exposure Mitigation
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Solution Overview
Problem
Conventional methods for mitigating RF radiation exposure, such as signs and barriers, are inadequate as they do not accurately inform personnel of current radiation levels and can interfere with network performance, posing risks of exposure and legal liability.
Innovation Solution
An RF infrastructure sentry system with sensors, a processor, and a power interrupter that detects human presence and automatically adjusts power to RF radiation sources, using AI cameras and machine learning to distinguish humans, and includes communication interfaces for alerts and logging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional signs and barriers are used to warn personnel of RF radiation exposure, then regulatory compliance is attempted, but the signs do not accurately inform personnel of current radiation levels and workers may intentionally climb over barriers or unknowingly enter hazardous areas
Solution Approach 1:
The system dynamically adjusts the state of the RF radiation source based on real-time detection of human presence. The RF source transitions between active and inactive states depending on whether a human is detected in the hazardous area, providing real-time protection rather than static warning signs.
Solution Approach 2:
The system implements a feedback loop where sensors continuously monitor for human presence, the processor analyzes this information, and the RF radiation source is controlled accordingly. This closed-loop system ensures that protection measures are actively adjusted based on current conditions.
2Object-affected harmful factors
If barriers are placed around RF radiation sources to prevent access, then some protection is provided, but barriers interfere with network performance and do not prevent determined workers from entering hazardous areas
Solution Approach 1:
Instead of static barriers that continuously block access, the system dynamically controls the RF radiation source itself, deactivating it only when human presence is detected. This maintains network performance during normal operation while providing protection when needed.
Solution Approach 2:
The patent replaces mechanical barriers with an automated detection and control system using sensors, processors, and electronic control of the RF source, eliminating the need for physical obstacles that interfere with network operations.
3Reliability
If permanent signage is used to warn of RF radiation hazards, then regulatory compliance is attempted, but signs do not tell personnel whether the site is currently operational and a hazard exists
Solution Approach 1:
The system provides dynamic, real-time information about hazard status by actually controlling the RF source operation based on detected human presence, rather than using static signs. The hazard information is inherent in the operational state of the RF source itself.
Solution Approach 2:
The RF radiation source system itself provides the hazard information through its operational state - when deactivated due to detected human presence, it inherently communicates the hazard condition without requiring separate signage or complex additional systems.
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
Effectively mitigates RF radiation exposure by temporarily interrupting power to RF sources when humans enter hazardous areas, reducing the need for permanent signage and barriers, and ensuring compliance with regulatory standards.
Implementation Method 1
a power interrupter, such as a relay, disposed on an electrical path between the electrical input and the electrical output. The relay is configured to selectively connect or disconnect the electrical input and the electrical output through the electrical path.
Data Source
AI summary
An RF infrastructure sentry system includes one or more sensors configured to detect that an object has entered an area of concern proximate to an RF radiation source and an RF mitigation system operatively connected to the one or more sensors. The RF mitigation system includes an electrical input operatively connected to a power supply for the RF radiation source; an electrical output operatively connected to the RF radiation source; a relay disposed on an electrical path between the electrical input and the electrical output and configured to selectively connect or disconnect the electrical input and the electrical output through the electrical path; and a processor operatively connected to the relay and configured, at least in response to detection by the one or more sensors that the object has entered the area of concern, to open the relay to temporarily interrupt power to the RF radiation source.