CMOS Detector Staggered Array Module for Sub-Terahertz Imaging on Conveyor Belt System
A complementary metal–oxide–semiconductor (CMOS) detector array is proposed to improve the sub-terahertz imaging resolution for objects in the conveyor belt system. The image resolution is limited to the implemented configuration, such as the wide spacing in the detector array, the high conveyor bel...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/23/3/1232 |
| _version_ | 1797623287472193536 |
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| author | Moon-Jeong Lee Ha-Neul Lee Ga-Eun Lee Seong-Tae Han Dong-Woo Kang Jong-Ryul Yang |
| author_facet | Moon-Jeong Lee Ha-Neul Lee Ga-Eun Lee Seong-Tae Han Dong-Woo Kang Jong-Ryul Yang |
| author_sort | Moon-Jeong Lee |
| collection | DOAJ |
| description | A complementary metal–oxide–semiconductor (CMOS) detector array is proposed to improve the sub-terahertz imaging resolution for objects in the conveyor belt system. The image resolution is limited to the implemented configuration, such as the wide spacing in the detector array, the high conveyor belt speed, and the slow response of the signal conditioning block. The proposed array can improve the image resolution in the direction perpendicular to the movement of the belt, which is determined by the size and interval of the detector pixel, by configuring the array into two replaceable columns located at the misaligned horizontal positions. Replaceable detector unit pixels are individually attached to the motherboard after measuring and evaluating the detection performance to construct the proposed array. The intensities of 32 detector pixels placed under the conveyor belt with a width of 160 mm were initially calibrated in every image, including the beam pattern of 0.2 THz signals generated from the gyrotron. The image resolution of the perpendicular direction obtained from the proposed array was measured to be approximately 5 mm at a conveyor belt speed of 16 mm/s, demonstrating a 200% improvement in resolution compared to the conventional linear array under the same conditions. |
| first_indexed | 2024-03-11T09:26:32Z |
| format | Article |
| id | doaj.art-d171c244d45b440a9596db2db5138f98 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T09:26:32Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-d171c244d45b440a9596db2db5138f982023-11-16T17:58:03ZengMDPI AGSensors1424-82202023-01-01233123210.3390/s23031232CMOS Detector Staggered Array Module for Sub-Terahertz Imaging on Conveyor Belt SystemMoon-Jeong Lee0Ha-Neul Lee1Ga-Eun Lee2Seong-Tae Han3Dong-Woo Kang4Jong-Ryul Yang5Department of Electronic Engineering, Yeungnam University, Gyeongsan 38541, Republic of KoreaDepartment of Electronic Engineering, Yeungnam University, Gyeongsan 38541, Republic of KoreaDepartment of Electronic Engineering, Yeungnam University, Gyeongsan 38541, Republic of KoreaElectrophysics Research Center, Korea Electrotechnology Research Institute, Changwon 51543, Republic of KoreaAI Compact SoC Research Section, Electronics and Telecommunications Research Institute, Daejeon 34129, Republic of KoreaDepartment of Electronic Engineering, Yeungnam University, Gyeongsan 38541, Republic of KoreaA complementary metal–oxide–semiconductor (CMOS) detector array is proposed to improve the sub-terahertz imaging resolution for objects in the conveyor belt system. The image resolution is limited to the implemented configuration, such as the wide spacing in the detector array, the high conveyor belt speed, and the slow response of the signal conditioning block. The proposed array can improve the image resolution in the direction perpendicular to the movement of the belt, which is determined by the size and interval of the detector pixel, by configuring the array into two replaceable columns located at the misaligned horizontal positions. Replaceable detector unit pixels are individually attached to the motherboard after measuring and evaluating the detection performance to construct the proposed array. The intensities of 32 detector pixels placed under the conveyor belt with a width of 160 mm were initially calibrated in every image, including the beam pattern of 0.2 THz signals generated from the gyrotron. The image resolution of the perpendicular direction obtained from the proposed array was measured to be approximately 5 mm at a conveyor belt speed of 16 mm/s, demonstrating a 200% improvement in resolution compared to the conventional linear array under the same conditions.https://www.mdpi.com/1424-8220/23/3/1232array layoutCMOS detectorconveyor belthigh-resolutionreplaceable arraysub-terahertz imaging |
| spellingShingle | Moon-Jeong Lee Ha-Neul Lee Ga-Eun Lee Seong-Tae Han Dong-Woo Kang Jong-Ryul Yang CMOS Detector Staggered Array Module for Sub-Terahertz Imaging on Conveyor Belt System Sensors array layout CMOS detector conveyor belt high-resolution replaceable array sub-terahertz imaging |
| title | CMOS Detector Staggered Array Module for Sub-Terahertz Imaging on Conveyor Belt System |
| title_full | CMOS Detector Staggered Array Module for Sub-Terahertz Imaging on Conveyor Belt System |
| title_fullStr | CMOS Detector Staggered Array Module for Sub-Terahertz Imaging on Conveyor Belt System |
| title_full_unstemmed | CMOS Detector Staggered Array Module for Sub-Terahertz Imaging on Conveyor Belt System |
| title_short | CMOS Detector Staggered Array Module for Sub-Terahertz Imaging on Conveyor Belt System |
| title_sort | cmos detector staggered array module for sub terahertz imaging on conveyor belt system |
| topic | array layout CMOS detector conveyor belt high-resolution replaceable array sub-terahertz imaging |
| url | https://www.mdpi.com/1424-8220/23/3/1232 |
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