Radio Frequency Identification Gate System to Identify Misused Personal Dosimeters.
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| Title: | Radio Frequency Identification Gate System to Identify Misused Personal Dosimeters. |
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| Authors: | Tamura, Megumi1 sawatamu@hiroshima-u.ac.jp, Kawamoto, Takeshi2, Ishifuro, Minoru3,4, Tamura, Takayuki5, Masumoto, Yoshifumi1, Kenjo, Masahiro6, Kiguchi, Masao1, Awai, Kazuo7, Nagata, Yasushi6,8 |
| Source: | Journal of Medical Systems. 10/18/2023, Vol. 47 Issue 1, p1-6. 6p. 1 Black and White Photograph, 3 Diagrams, 2 Charts. |
| Subjects: | Industrial safety, Wearable technology, Protective clothing, Occupational exposure, Radio frequency identification systems, Electromagnetic fields, Dosimeters, Research funding, Radiation doses, Descriptive statistics, Sensitivity & specificity (Statistics) |
| Abstract: | The use of two personal dosimeters, one worn over and one worn under a protective apron, provides the best estimate of effective dose. However, inappropriate positioning of dosimeters is a common occurrence, resulting in abnormally high or low radiation exposure records. Although such incorrect positioning can be identified by radiation exposure records, doing so is time-consuming and labor-intensive for administrators. Therefore, a system that can identify incorrect locations of dosimeters without burdening administrators must be developed. In this study, we developed a radio frequency identification (RFID) gate system that can differentiate between two RFID-tagged dosimeters placed over and under a metal apron and identify misused dosimeters. To simulate the position of the RFID-tagged dosimeters, we designed four dosimeter-wearing classes, including "proper use" and three types of "misuse" (i.e., "reversed," "both under," and "both over"). When the system predicts "misuse" based on the tag reading, the worker is alerted with lights and alarms. The system performance was evaluated using a confusion matrix, with an overall accuracy of 97.75%, demonstrating high classification performance. The safety of the system against life support devices was also investigated, demonstrating that they were not affected by the electric field at 0.3 m or more from the antenna of the system under any transmit powers tested. This RFID gate system is highly capable of identifying incorrectly positioned dosimeters, enabling real-time monitoring of dosimeters to manage their positioning. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | The use of two personal dosimeters, one worn over and one worn under a protective apron, provides the best estimate of effective dose. However, inappropriate positioning of dosimeters is a common occurrence, resulting in abnormally high or low radiation exposure records. Although such incorrect positioning can be identified by radiation exposure records, doing so is time-consuming and labor-intensive for administrators. Therefore, a system that can identify incorrect locations of dosimeters without burdening administrators must be developed. In this study, we developed a radio frequency identification (RFID) gate system that can differentiate between two RFID-tagged dosimeters placed over and under a metal apron and identify misused dosimeters. To simulate the position of the RFID-tagged dosimeters, we designed four dosimeter-wearing classes, including "proper use" and three types of "misuse" (i.e., "reversed," "both under," and "both over"). When the system predicts "misuse" based on the tag reading, the worker is alerted with lights and alarms. The system performance was evaluated using a confusion matrix, with an overall accuracy of 97.75%, demonstrating high classification performance. The safety of the system against life support devices was also investigated, demonstrating that they were not affected by the electric field at 0.3 m or more from the antenna of the system under any transmit powers tested. This RFID gate system is highly capable of identifying incorrectly positioned dosimeters, enabling real-time monitoring of dosimeters to manage their positioning. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 01485598 |
| DOI: | 10.1007/s10916-023-02002-6 |
