• 제목/요약/키워드: Infrared: imaging

검색결과 765건 처리시간 0.023초

초점면 배열 방식 열상 카메라 시스템의 화질 개선 연구 (A Study on the Improvement of Image Quality for a Thermal Imaging System with focal Plane Array Typed Sensor)

  • 박세화
    • 한국산학기술학회논문지
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    • 제1권2호
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    • pp.27-31
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    • 2000
  • 대상 물체의 온도분포를 해석하고 계측하기 위해 열상 장비가 구현된다. 시스템의 주요한 부분은 초점면 배열 형태의 센서가 적용된 열상 카메라이다. 적용된 열상 센서는 중파장 적외선 영역의 신호를 검출하며 열상을 형성하기 위한 기본 신호를 출력한다. DSP가 활용되어 센서 신호처리를 통해 열상을 구성하고 NTSC 신호 및 디지털 신호 출력을 한다. 열상의 화질을 개선하기 위해 이점 교정법을 적용한다. 이는 낮은 온도와 높은 온도를 기준으로 하여 초점면 배열 센서 화소 신호의 공간적인 비균일함을 교정하는 것으로서 실험 결과를 통해 열상의 화질이 개선됨을 보인다.

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적외선 열화상을 활용한 리튬 이온 ESS의 방열설계 성능평가에 관한 연구 (A Performance Evaluation of a Heat Dissipation Design for a Lithium-Ion Energy Storage System Using Infrared Thermal Imaging)

  • 김은지;이경일;김재열
    • 한국기계가공학회지
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    • 제19권5호
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    • pp.105-110
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    • 2020
  • The global battery market is rapidly growing due to the development of vehicles(EV) and wireless electronic products. In particular logistics robots, which hielp to produce EVs, have attracted much interest in research in Korea Because logistics sites and factories operate continuously for 24 hours, the technology that can dramatically increase the operation time of the logistics equipment is rapidly developing, and various high-level technologies are required for the batteries used in. for example, logistics robots. These required technologies include those that enable rapid battery charging as well wireless charging to charge batteries while moving. The development of these technologies, however, result in increasing explosions and topical accidents involving rapid charging batteries These accidents due to the thermal shock caused by the heat generated during the charging of the battery cell. In this study, a performance evaluation of a heat dissipation design using infrared thermal imaging was performed on an energy storage systrm(Ess) applied with an internal heat conduction cooling method using a heating plate.

초정밀 열 영상 현미경 광학계 개발 (Development of the Ultra Precision Thermal Imaging Optical System)

  • 양순철;원종호
    • 한국정밀공학회지
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    • 제27권12호
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    • pp.15-21
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    • 2010
  • Recently, there is a demand for a thermal imaging microscope in the medical field as well as the semi-conductor industry Although the demand of the advanced thermal imaging microscope has been increased, it is very difficult to obtain the technology of developing a thermal camera, because it is used for defense industry. We developed the ${\times}5$ zoom microscope which has $3\;{\mu}m$ spatial resolution to research the design and fabrication of the IR (Infrared) optical system. The optical system of the IR microscope consists of four spherical lenses and four aspheric lenses. We verified individual sensitivity of each optical parameter as the first order approach to the analysis. And we also performed structure and vibration analysis. The optical elements are fabricated using Freeform 700A. The measurement results of surface roughness and form accuracy using NT 2000 and UA3P are Ra 2.36 nm and P-V $0.13\;{\mu}m$. Finally we ascertained resolution power of $3\;{\mu}m$ using USAF (United State Air Force) 1951 IR resolution test chart.

Digital Infrared Thermal Imaging of Crape Myrtle Leaves Infested with Sooty Mold

  • Kim, Jiyeon;Kweon, Si-Gyun;Park, Junhyung;Lee, Harim;Kim, Ki Woo
    • The Plant Pathology Journal
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    • 제32권6호
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    • pp.563-569
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    • 2016
  • The spatial patterns for temperature distribution on crape myrtle leaves infested with sooty mold were investigated using a digital infrared thermal imaging camera. The mean temperatures of the control and sooty regions were $26.98^{\circ}C$ and $28.44^{\circ}C$, respectively. In the thermal images, the sooty regions appeared as distinct spots, indicating that the temperatures in these areas were higher than those in the control regions on the same leaves. This suggests that the sooty regions became warmer than their control regions on the adaxial leaf surface. Neither epidermal penetration nor cell wall dissolution by the fungus was observed on the adaxial leaf surface. It is likely that the high temperature of black leaves have an increased cooling load. To our knowledge, this is the first report on elevated temperatures in sooty regions, and the results show spatial heterogeneity in temperature distribution across the leaf surface.

Microphone Array와 열화상 카메라를 이용한 고압설비 고장검출 (Malfunction Detection of High Voltage Equipment Using Microphone Array and Infrared Thermal Imaging Camera)

  • 한순신;최재영;이장명
    • 제어로봇시스템학회논문지
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    • 제16권1호
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    • pp.25-32
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    • 2010
  • The paper proposes a hierarchical fault detection method for the high voltage equipment using a microphone array which detects the location of fault and the thermal imaging and CCD cameras which verifies the fault and stores the image, respectively. There are partial arc discharges on the faulty insulators, which generates a specific pattern of sound. Detecting the signal using the microphone array, the location of the faulty insulator can be estimated. The 6th band-pass filter was applied to remove noise signal from wind or external influence. When the mobile robot carries the thermal and CCD cameras to the possible place of the fault insulator, the fault insulators or power transmission wires can be detected by the thermal images, which are caused by the aging or natural erosion. Finally, the CCD camera captures the image of the fault insulator for the record. The detection scheme of fault location using the microphone array and the thermal images have been proved to be effective through the real experiments. As a result of this research, it becomes possible to use a mobile robot with the integrated sensors to detect the fault insulators instead of a human being.

열화상카메라를 이용한 산불 화재 대응시스템 연구 (Forest Fire Response System Using Thermal Imaging Camera)

  • 윤원섭;김연규;김승준
    • 한국산업융합학회 논문집
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    • 제24권6_2호
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    • pp.927-935
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    • 2021
  • This study conducted a study to improve the problems of the existing fire sensor system. In the case of the existing system, it took more than 3 minutes to detect a fire even at a short distance, making it difficult to extinguish the initial fire. In order to improve these problems, in this study, a fire detection system using an infrared thermal imaging camera was studied. The infrared image-based fire detection system is relatively wide and can detect fire over a long distance, so it has the advantage of being applicable to many fire detection systems. As a result of conducting a field test using the fire detection system, a fire that occurred about 2 km ahead was detected within about 10 seconds. Since the fire detection function of this system can detect within 10 seconds from a distance of about 2 km, it was applicable to forest fires that occur frequently in spring and autumn.

적외선 검출기 개발가능성 및 대안 분석 연구 (A Study on Feasibility Analysis and Alternatives for Infrared Detector Development)

  • 김경수;민성기;김철환
    • 시스템엔지니어링워크숍
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    • 통권4호
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    • pp.123-134
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    • 2004
  • This paper deals with the feasibility analysis and alternatives for infrared detector development. The purpose of this paper analyze development requirement and feasibility study in both technology and cost. We get raw input data for system engineering process from development and technical expert, and then analyze cost and technology for development feasibility, and alternative study. Infrared Detector is core component of Thermal Imaging System and developed by ADD from 2006 to 2008 year. Technical level is analyzed by TRL(Technical Readiness Level) and AOA(Analysis of Alternative) is done by development and production cost estimate. We use SEER-H tool for cost estimate, that is parametric cost estimate tool based on Knowledge Base. Also this paper presents risk analysis for project management because it is necessary to risk driver management during the infrared detector development. The result of IR Detector feasibility and alternative study will be used in technical and cost analysis. This study can help those who are related to the cost analysis and development feasibility of other weapons

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