Rotatable OSLM Mount for Shielded and Readable Dosimeter
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Solution Overview
Problem
Existing personal radiation monitoring devices require the removal of radiation sensors from their holders for quantitative evaluation, which is inefficient and prone to mechanical errors, especially for optically stimulated luminescence (OSL) sensors that need exposure to light for analysis.
Innovation Solution
A portable dosimeter design featuring a cylindrically shaped dosimeter mount with a rotatable OSLM, allowing for a shielded configuration that protects the sensor and a reading configuration where the OSLM is exposed to light without removing it from the dosimeter housing, enabling direct analysis using a smartphone-based reader.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the OSLM is permanently mounted in the dosimeter housing, then the device complexity is reduced and handling efficiency is improved, but the OSLM cannot be removed for analysis
Solution Approach 1:
The dosimeter mount is designed to rotate between a shielded configuration (for normal wear) and a reading configuration (for analysis). This dynamic repositioning allows the OSLM to remain permanently mounted while enabling access to its exposed surface for optical stimulation and reading, resolving the contradiction between permanent mounting and analyzability.
2Ease of operation
If the OSLM exposed surface is always accessible, then reading is simplified, but the OSLM is exposed to ambient light during normal use which affects measurement accuracy
Solution Approach 1:
The rotatable dosimeter mount dynamically positions the OSLM exposed surface either toward an opening (for reading) or away from the opening (for shielding during normal use). This dynamic configuration ensures the OSLM is protected from ambient light during wear but accessible for reading, resolving the contradiction between accessibility and measurement precision.
3Reliability
If the dosimeter requires disassembly for sensor analysis, then the OSLM is protected during transport, but the analysis process becomes time-consuming and prone to mechanical errors
Solution Approach 1:
Instead of requiring disassembly, the system uses a dynamic rotation mechanism that repositions the dosimeter mount to expose the OSLM surface while it remains permanently mounted. This eliminates disassembly steps, reduces mechanical errors, and speeds up the analysis process while maintaining protection during normal use.
4Adaptability or versatility
If a rotatable mount mechanism is added, then the dosimeter can switch between shielded and reading configurations, but the device complexity increases
Solution Approach 1:
The dosimeter is segmented into distinct functional components: the dosimeter housing, the rotatable dosimeter mount, and the OSLM. This segmentation allows the mount to rotate independently to achieve different configurations without complicating the entire device structure, resolving the contradiction between adaptability and complexity.
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
This design simplifies the analysis process, reduces mechanical complexity, and allows for rapid and accurate measurement of radiation exposure without disassembly, improving productivity and handling efficiency.
Implementation Method 1
a piece of optically stimulated luminescence material (OSLM) mounted in the dosimeter mount
Data Source
AI summary
Described is a portable dosimeter that includes a piece of optically stimulated luminescence material (OSLM) mounted in a dosimeter mount that is rotatably mounted in a cylindrical recess of a dosimeter housing.