Compact Radiation Detector Using Cylindrical Filter and Vacuum Pump
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Solution Overview
Problem
Existing real-time airborne radiation detection apparatuses face limitations in sensing efficiency and are not compact or lightweight, making them inconvenient for real-time measurements and maintenance.
Innovation Solution
A compact and lightweight real-time airborne radiation detection apparatus is designed with a cylindrical filter that uses negative pressure formed by a pump to collect aerosol, and a detector located within the filter to detect radiation, allowing for efficient aerosol collection and radiation detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a filter collects aerosol from air discharged from an outlet of an aerosol concentration sensor, then real-time radiation measurement is achieved, but sensing efficiency deteriorates
Solution Approach 1:
The patent inverts the conventional aerosol collection approach by placing the filter at the inlet rather than the outlet of the sensor. Air is drawn through the filter from the inlet side, allowing aerosol collection before it reaches the sensor chamber, thereby improving sensing efficiency while maintaining real-time measurement capability
Solution Approach 2:
The device is divided into distinct functional modules: an aerosol collection unit with filter, a sensor chamber, and a radiation detector. This segmentation allows each component to perform its function optimally - the filter captures aerosol efficiently while the detector measures radiation from collected particles
2Weight of moving object
If the apparatus structure is simplified for compactness, then portability is improved, but maintenance difficulty increases
Solution Approach 1:
The apparatus is designed with detachable modules that can be separated for maintenance. The filter element can be removed and replaced independently, and the radiation detector can be accessed by detaching the sensor chamber, maintaining compactness while enabling easy maintenance of critical components
Solution Approach 2:
Critical components such as the filter and radiation detector are designed to be extractable from the compact housing. This allows maintenance personnel to access and replace these components without disassembling the entire apparatus, balancing compact design with maintenance ease
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
The apparatus achieves improved sensing efficiency and convenience in maintenance by using a vacuum pump to maintain negative pressure, ensuring continuous operation even with high aerosol collection, and allowing detachable coupling of components for easy measurement and maintenance.
Implementation Method 1
negative pressure is formed by a pump in an inner space in a cylindrical filter
Implementation Method 2
aerosol collected on the surface of the cylindrical filter due to flow of fluid formed by the negative pressure
Implementation Method 3
a detector located in the inner space in the cylindrical filter detects radiation emitted from aerosol collected on the surface of the cylindrical filter
Data Source
AI summary
Disclosed is a technology related to a compact radiation detection apparatus used to measure airborne radiation. The compact radiation detection apparatus includes a cylindrical filter, a detector assembly coupled to one end of the cylindrical filter, and a pump assembly coupled to the other end of the cylindrical filter. Negative pressure is formed in an inner space in the cylindrical filter by a vacuum pump, and accordingly, aerosol is continuously collected on the surface of the cylindrical filter. A detector located in the inner space in the cylindrical filter detects radiation emitted from the collected aerosol.