Hot Cell Barcode Scanner via Mirror and Conduit
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Solution Overview
Problem
Scanning systems face challenges in accurately reading labels within shielded enclosures in radioactive environments due to radiation interference, making it difficult to track radionuclide generators effectively during manufacturing.
Innovation Solution
A scanning system comprising a camera positioned exterior to a hot cell with a mirror and conduit allowing light to travel between the camera and the mirror, enabling barcode scanning without exposing the camera to radiation, thus preventing radiation leakage and allowing for accurate image generation of barcodes within the radioactive environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a camera is placed inside the shielded enclosure to scan barcodes, then barcode scanning capability is improved, but the camera is exposed to radiation which reduces its service life and reliability
Solution Approach 1:
The system divides the scanning function into two separate locations: a mirror inside the hot cell that reflects light, and a camera outside the hot cell that captures the reflected image. This segmentation allows the camera to perform barcode scanning without being exposed to radiation, resolving the contradiction between scanning capability and device reliability.
Solution Approach 2:
A mirror serves as an intermediary element between the barcode and the camera. The mirror is positioned inside the hot cell to reflect light from the barcode through the radiation shielding to the camera outside, enabling the camera to scan barcodes without direct exposure to the radioactive environment.
2Reliability
If radiation shielding is added to protect the camera, then camera protection is improved, but the complexity of the shielding structure increases
Solution Approach 1:
The camera is extracted from the radioactive environment and placed outside the hot cell. By removing the camera from the shielded enclosure, the need for complex internal shielding structures is eliminated, while the radiation shielding of the hot cell itself provides sufficient protection.
3Illumination intensity
If a conduit is created for light to travel through the wall, then light transmission is improved, but radiation leakage through the conduit may occur
Solution Approach 1:
The mirror acts as an intermediary that directs light through a controlled path. The conduit is designed with a reflective interior surface that guides light from the barcode to the camera while preventing radiation from escaping through the opening in the radiation shielding.
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 reliable and accurate tracking of radionuclide generators by preventing radiation exposure to the camera and maintaining image quality, extending the service life of the scanning system and ensuring precise barcode reading within hot cells.
Implementation Method 1
a mirror, and a conduit extending through a wall of the hot cell for light to travel between the camera and the mirror
Data Source
AI summary
A system for manufacturing radionuclide generators includes an enclosure defining a radioactive environment. The enclosure includes radiation shielding to prevent radiation within the radioactive environment from moving to an exterior of the enclosure. The system also includes a barcode positioned on an object within the enclosure and a scanning system for scanning the barcode. The scanning system includes a camera on the exterior of the enclosure, a mirror, and a conduit extending through a wall of the enclosure for light to travel between the camera and the mirror.