Radon Detector With Dual Probe Switching
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Solution Overview
Problem
Current radon measurement methods, such as scintillation cells and PIN diodes, face challenges in durability, sensitivity, and humidity sensitivity, and are unable to accurately measure radon and its progeny concentrations in real-time without external influences.
Innovation Solution
A radon measuring apparatus with a housing having separate spaces and probe units, a control unit, and a switching unit that allows for selective electrical connection or insulation of probe rods, along with filter units for precise measurement methods, enabling accurate detection of radon and its progeny concentrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a scintillation cell detector is used for radon measurement, then measurement sensitivity is improved, but device cost increases and durability decreases
Solution Approach 1:
The patent replaces expensive and fragile scintillation cells with a durable semiconductor detector that can operate continuously without degradation. The semiconductor detector is designed to be robust and long-lasting, eliminating the need for frequent replacement of fluorescent materials while maintaining high measurement sensitivity.
2Reliability
If a PIN diode detector is used for radon measurement, then durability is improved, but measurement sensitivity decreases and humidity sensitivity increases
Solution Approach 1:
The patent introduces a humidity barrier layer with specific permeability characteristics that selectively blocks water molecules while allowing alpha particles to pass through. This creates local quality differentiation where the detector surface has enhanced humidity resistance in specific regions without compromising the overall detection sensitivity. The barrier layer is designed with controlled thickness and material properties to achieve selective permeability.
3Productivity
If active measurement methods are used for radon detection, then real-time measurement capability is improved, but sensitivity to external influences increases
Solution Approach 1:
The patent introduces a humidity barrier layer as an intermediary between the semiconductor detector and the external environment. This barrier layer mediates the interaction by selectively blocking harmful water molecules while permitting beneficial alpha particles to reach the detector. The intermediary layer thus protects the detection system from external humidity influences without interfering with the radon measurement function.
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
Enables accurate and real-time measurement of radon and radon progeny concentrations, reducing external influences and improving measurement precision compared to existing technologies.
Implementation Method 1
a probe unit having first and second probe rods which are respectively disposed inside each space in the opposite direction from each other inside the housing
Implementation Method 2
a switching unit for controlling the electrical connection between the first and second probe rods
Data Source
AI summary
Disclosed are a radon measuring apparatus and method. A radon measuring apparatus according to the present invention can comprise: a housing having two separate spaces and through holes formed such that each space communicates with the outside; a probe unit having first and second probe rods which are respectively disposed inside each space in the opposite direction from each other inside the housing; a control unit disposed inside the housing and connected to the probe unit; and a switching unit for controlling the electrical connection between the first and second probe rods.