• Title/Summary/Keyword: thermal imaging

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Design and Diagnosis Case of Energy Eefficiency Diagnostic Solution based on IoT (사물인터넷 기반 에너지 효율 진단 솔루션의 설계 및 진단 사례)

  • Cho, Kwangmoon
    • Journal of Internet of Things and Convergence
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    • v.6 no.1
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    • pp.23-30
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    • 2020
  • This paper proposes energy management directions to discover the factors of energy loss in homes and buildings and to find ways to improve them. We designed a diagnostic content app for everyday life so that not only housing experts but also the general public can use the detachable thermal imaging camera, which is a strong point of popularity and convenience. The diagnostic results using the app were analyzed using Energy Finder, an energy efficiency diagnostic solution. The survey was conducted on the senior center which is in the blind spots and facilities of the energy welfare area. The target of diagnosis was energy efficiency diagnosis by selecting 30 senior centers for over 15 years from 600 locations located in Naju City, Jeollanam-do. The overall diagnosis was good, but it is considered that the place classified as 7th grade needs to be supplemented to improve energy efficiency.

Direct-Aluminum-Heating-Induced Crystallization of Amorphous Silicon Thin Film (비정질 실리콘 박막의 알루미늄 직접 가열 유도 결정화 공정)

  • Park, Ji-Young;Lee, Dae-Geon;Moon, Seung-Jae
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.36 no.10
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    • pp.1019-1023
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    • 2012
  • In this research, a novel direct-aluminum-heating-induced crystallization method was developed for the purpose of application to solar cells. By applying a constant current of 3 A to an aluminum thin film, a 200-nm-thick amorphous silicon (a-Si) thin film with a size of $1cm{\times}1cm$ can be crystallized into a polycrystalline silicon (poly-Si) thin film within a few tens of seconds. The Raman spectrum analysis shows a peak of 520 $cm^{-1}$, which verifies the presence of poly-Si. After removing the aluminum layer, the poly-Si thin film was found to be porous. SIMS analysis showed that the porous poly-Si thin film was heavily p-doped with a doping concentration of $10^{21}cm^{-3}$. Thermal imaging shows that the crystallization from a-Si to poly-Si occurred at a temperature of around 820 K.

Fabrication of Piezoelectric Cantilever with Microcone Tip for Sensing Local Stiffness of Biological Tissue (생체 조직의 국소 강도 측정을 위한 마이크로 콘 팁을 가진 압전 캔틸레버 제작)

  • Roh, Hee Chang;Yang, Dasom;Ryu, WonHyoung
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.41 no.11
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    • pp.743-748
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    • 2017
  • For diseases that are difficult to detect by conventional imaging techniques, the development of a diagnostic method that allows sensors to be inserted into the human body to aid the diagnosis of local spots of the target tissue, is highly desirable. In particular, it is extremely difficult to determine whether vulnerable plaque can later develop into atherosclerosis using only imaging techniques. However, vulnerable plaques are expected to have slightly different mechanical properties than healthy tissue. In this study, we aim to develop a piezoelectric cantilever-type sensor that can be inserted into the human body and can detect the local mechanical properties of the target tissue. A piezoelectric polymer composite based on $BaTiO_3$ nanoparticles was optimized for fabrication of a piezoelectric cantilever. Next, a micro-cone tip was fabricated at the end of the piezoelectric cantilever by thermal drawing. Finally, stiffness of biological tissue samples was measured with the piezoelectric cantilever sensor for verifying its functionality.

Defect Detection of Impacted Composite Tubes by Lock-in Photo-Infrared Thermography Technique (위상잠금 열화상기법을 이용한 복합재 튜브 충격 손상 결함 측정)

  • Kim, Kyoung-Suk;Jeon, So-Young;Jung, Hyun-Chul
    • Journal of the Korean Society for Nondestructive Testing
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    • v.31 no.2
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    • pp.139-143
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    • 2011
  • The problem of delamination of composite tubes by impact has been acknowledged in aerospace and automobile industry. Non-destructive testing(NDT) methods in composite material structure are important to evaluate reliability of composite structure. There are many kinds of NDT methods which can detect the inside defect of the composite material such as Infrared Thermography(IRT). Infrared thermal imaging of object is different from that of a defect, in heated composite tubes with an internal defect, and then location and size of a defect can be measured by the analysis of thermal imaging pattern. In this study, Lock-in Infrared thermography detect internal defects of Impacted composite tubes by the inspection of infrared lay radiated from the surface of composite tubes.

Effects of the Acupuncture Therapy in Combination with Soyeom Pharmacopuncture Therapy on Acute Whiplash Injury by Traffic Accident (소염약침 복합치료가 교통사고로 인한 초기 경추 편타 손상에 미치는 영향)

  • Im, Jeong-Gyun;Lee, Jin-Bok;Lee, Hyung-Geol;Yook, Tae-Han;Kim, Jong-Uk
    • Journal of Acupuncture Research
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    • v.28 no.4
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    • pp.9-18
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    • 2011
  • Objectives : This study was performed to evaluate the effects of the acupuncture therapy in combination with Soyeom pharmacopuncture therapy on acute whiplash injury by traffic accident. And thermal change of posterior neck and shoulder was observed. Methods : The clinical study was conducted to 20 cases of acute whiplash injury patients who had been admitted in Dept. of Acupuncture and Moxibusion, Woosuk University Hospital from December 1, 2010 to May 31, 2011. The patients were randomly divided into two groups. In one group(test group), patients were treated with the acupuncture therapy in combination with Soyeom pharmacopuncture therapy. And in the other group(control group), patients were treated with acupuncture therapy only. To estimate the efficacy of treatments, visual analog scale(VAS), neck disability index(NDI) of posterior neck pain were checked. And also thermal change of posterior neck and shoulder was observed by digital infrared thermographic imaging(DITI). Results : Both group represented effective improvement in VAS and NDI of posterior neck pain. Especially, test group is more effective than control group in VAS comparison, statistically. In test group, temperature of posterior neck and shoulder was decreased after treatments. But there was no significant difference between two groups on thermographic change. Conclusions : Through this study, Soyeom pharmacopuncture therapy is considered to be effective for reducing pain in acute whiplash injury patients. And after Soyeom pharmacopuncture therapy, temperature of posterior neck and shoulder show a tendency to decrease.

Clinical Case Study of Facial Nerve Palsy Using Facial Acupuncture (안면 성형침을 이용한 안면신경마비 치험 2례)

  • Chu, Min-Gyu;Jo, Hee-Guen;Choi, Jin-Bong;Kim, Sun-Jong;Park, Kyung-Mi;Cho, Gook-Ryung;Lee, Hyun
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.23 no.5
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    • pp.1188-1192
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    • 2009
  • Facail nerve palsy is a common disease in the face. This disease is treated by many methods. But it is not treated by Facial Acupunture. Therefore we performed to evaluate the effect of Facial Acupuncture with oriental dedical treatment in facail nerve palsy. This clinical study was carried out 2 caese of facail nerve palsy which had been admitted our hospital. In this study the patients were treated by Facail Acupuncture. Other treatment were herbal medication, regabilitative therapy. H-B scale(House-Brackmann facial nerve grading system) and Digital Infrared Thermal Imaging were measured from admission to discharge. After being treated by our methods, Patients' H-B scale and Inequality of Facial DITI were improved in cases compared to existing. In the study, The treatment of facial nerve palsy using Facial acupuncture was more effective, especially H-B scale, Digital Infrared Thermal Imaging and treatment period, compared to existing.

Effects of Hyeong points' Acupuncture of Three Foot-eum Collaterals on Abdominal Thermography of Healthy Human Beings (족삼음경(足三陰經) 형혈(滎穴) 자침(刺鍼)이 흉복부(胸腹部)의 체열변화(體熱變化)에 미치는 영향(影響))

  • Shin Jong-Keun;Kim Jae-Hyo;Park Sung-Sub;Park Kui-Jong;Kim Kyung-Sik;Sohn In-Chul
    • Korean Journal of Acupuncture
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    • v.20 no.4
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    • pp.1-16
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    • 2003
  • Objectives : This study was examined for effects of acupuncture of Hyeong points' Acupuncture of Three Foot-eum Collaterals on the abdominal thermography of health subject. Methods : The volunteers who participating in this study had taken rest for 20 - 30 minutes in room temperature $(23-25^{\circ}C)$ before the examination and informed them what to prohibit smoking, drinking and administration of drug for the previous day. The thermography of abdomen including a below part of the chest was taken using Infra-Red Imaging System (IR 2000, MEDI-CORE Co., Korea) by time interval of 15 minutes at 15 minutes before, just before and 15 minutes after, 30 minutes after and 45 minutes after acupuncture stimulation. Acupuncture was applied to the left Hyeong points' Acupuncture of Three Foot-eum Collaterals for 30 minutes. Results : The results showed that acupuncture of Hyeong points had more potencies of changes on all the ROIs of abdominal thermography than those of control group. Also, it was observed that the quantities of thermal changes following acupuncture of Hyeong points been increased comparing that of control group at all the ROIs (region of interest). Observed the thermography classified by ROI, however, it was failed that acupuncture of Hyeong points could modulate the specific areas concerning to the abdominal pathway of Three Foot-eum Collaterals. Conclusions : These results suggest that acupuncture of Hyeong points may modulate thermal distributions and changes of abdominal areas including the below of chest.

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A Study on the interface of information processing system on Human enhancement fire fighting helmet (휴먼 증강 소방헬멧 정보처리 시스템 인터페이스 연구)

  • Park, Hyun-Ju;Lee, Kam-Yeon
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2018.10a
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    • pp.497-498
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    • 2018
  • In the fire scene, it is difficult to see 1m ahead because of power failure, smoke and toxic gas, even with thermal imaging camera and Xenon searchlight. Analysis of the smoke particles in the fire scene shows that even if the smoke is $5{\mu}m$ or less in wavelength, it is difficult to obtain a front view when using a conventional thermal imaging camera if the visual distance exceeds 1 meter. In the case of black smoke with a particle wavelength of $5{\mu}m$ or more, a space permeation sensor technology using various sensors other than a single sensor is required because chemical materials, gas, and water molecules are mixed. Firefighters need a smoke detection technology for smoke detection and spatial information visualization for forward safety view.In this paper, we design the interface of the information processing system with 32bit CPU core and peripheral circuit. We also implemented and simulated the interface with Lidar sensor. Through this, we provide interface that can implement information processing system of human enhancement fire helmet in the future.

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High Efficiency AMOLED using Hybrid of Small Molecule and Polymer Materials Patterned by Laser Transfer

  • Chin, Byung-Doo;Suh, Min-Chul;Kim, Mu-Hyun;Kang, Tae-Min;Yang, Nam-Choul;Song, Myung-Won;Lee, Seong-Taek;Kwon, Jang-Hyuk;Chung, Ho-Kyoon;Wolk, Martin B.;Bellmann, Erika;Baetzold, John P.
    • Journal of Information Display
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    • v.4 no.3
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    • pp.1-5
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    • 2003
  • Laser-Induced Thermal Imaging (LITI) is a laser addressed patterning process and has unique advantages such as high-resolution patterning with over all position accuracy of the imaged stripes of within 2.5 micrometer and scalability to large-size mother glass. This accuracy is accomplished by real-time error correction and a high-resolution stage control system that includes laser interferometers. Here the new concept of hybrid system that complement the merits of small molecule and polymer to be used as an OLED; our system can realize easy processing of light emitting polymers and high luminance efficiency of small molecules. LITI process enables the stripes to be patlerned with excellent thickness uniformity and multi-stacking of various functional layers without having to use any type of fine metal shadow mask. In this study, we report a full-color hybrid OLED using the multi-layered structure consisting of small molecules and polymers.

Implementation of BSCT $320{\times}240$ IR-FPA for Uncooled Thermal Imaging System (비냉각 열 영상 시트템용 BSCT $320{\times}240$ IR-FPA의 구현)

  • Kang, Dae-Seok;Shin, Gyeong-Uk;Park, Jae-U;Yoon, Dong-Han;Song, Seong-Hae;Han, Myeong-Su
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.39 no.11
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    • pp.7-13
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    • 2002
  • BSCT 320${\times}$240 IRFPA detector module is implemented, which is a key component in uncooled thermal imaging systems. The detector module consists of two parts, infrared sensitive pixel array and read-out integrated circuit(ROIC). The BSCT 320${\times}$240 pixels are made by laser scribe process and 10-${\mu}m$ micro-bump to satisfy 50-${\mu}m$ pitch and 95-% fill-factor. The ROIC has been designed to electrically address the pixels sequentailly and to improve signal-to-noise ratio with single transistor amplifier, HPF, tunable LPF and clamp circuit. The fabricated hybrid chip of detector and ROIC has been mounted on the TEC built-in ceramic package for more stable operation and tested for lots of electrical and optical properties. The IRFA sample has shown successful properties and met with good results of fill-factor, detectivity and responsivity.