• Title/Summary/Keyword: 건전지

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개인화기 조준경 개발방향

  • Song, Seong-Seok
    • Defense and Technology
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    • no.5 s.267
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    • pp.42-51
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    • 2001
  • 주.야간 겸용 영상 증폭장비는 주간 광학계가 복합 설계되어 야간 전용보다 무겁고 부피가 크며 탐지능력이 떨어져 야간전용으로 개발이 요구되었고, 열상장비는 악천후시 탐지능력은 우수하나 무겁고 부피가 크며 건전지 소요가 과다함으로 개인화기 조준경으로는 부적합하다는 결론을 도출하였다. 따라서 이 글에서는 전자광학장비중 야시장비의 개발현황 및 발전추세를 살펴보고 운용시험평가 결과분석을 토대로 향후 우리 군이 어떤 방향으로 야간 전투력을 극대화 할 수 있을 것인가에 대한 무기체계 소요제기와 작전운용성능을 설정할 것인가를 논해보고자 한다.

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The Removal of Silver in the Fixer Wastewater of X-ray Film Using Manganese Dioxide (이산화망간을 이용한 x-ray 필름 정착폐액중의 은 제거)

  • 박정호;오성훈;전용보;임찬섭;박승조
    • Resources Recycling
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    • v.6 no.4
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    • pp.11-16
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    • 1997
  • The wastewater resulted from the process of developing and fuing for x-ray film manufachlring contains a lot of silvercomponent. The average concentation of silver-component is about 1,500 mgA. The wastewater contained silver-component is toxic when it is discharged to the natural ecosystem. So that we must to do pretreatment of wastewater prior to discharge. There are electrolysis. chemical precipitation, and metallic replacement as conventional lreabent proccss of fixer wastewater of x-ray film. Adsorption of silver-component in x-ray fkcr wastewater was carricd out this study. 'Ille manganese dioxide (MDO) reagent and the recovered manganese dioxide (RMDO) from the waste dry-cell were used for adsarbents. Adsorption of silvercomponent was wrried out at the batch and continuous type experimental equipment. The adsorption experiment results were obtained bom silver-component have some diifcrences according to adsorhents. The adsorption results of manganese dioxide reagent (MDO) were better ihan those of waste dry-ccU (RMDO), but the manganese dloxide recovered fmm waste dry-cell (RMDO) will be able la recognized as good adsorbent too.

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Adsorption Behaviors of Nickel Ion on the Manganese Dioxide Powder (이산화망간 미립자(微粒子)의 니켈이온 흡착(吸着) 거동(擧動))

  • Baek, Mi-Hwa;Kim, Min-Kyung;Kim, Dong-Su;Sohn, Jeong-Soo
    • Resources Recycling
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    • v.17 no.1
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    • pp.59-65
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    • 2008
  • The adsorption features of nickel ion in wastewater on manganese dioxide from spent batteries were investigated for its usage as an adsorbent. The aquatic behavior of nickel ion was characterized by MINTEQ program and the considered influential variables on the adsorption of nickel ion were its initial concentration, reaction temperature, the amount of adsorbent, and pH. The adsorption ratio of nickel ion decreased with increasing its initial concentration and thermodynamic estimation has been carried out based on the adsorption characteristics of nickel ion depending on temperature. In addition, the adsorption of nickel ion was shown to be promoted according to the amount of manganese dioxide and a lot of nickel ions were adsorbed as the solution pH was raised.

Measurement of Environmental Radiation Using Medical Scintillation Detector in Well Counter System (의료용 우물형 섬광계수기를 이용한 환경 방사선 측정)

  • Lyu, Kwang Yeul;Park, Yeon-joon;Kim, Min-jeong;Ham, Eun-hye;Yoon, Ji-yeol;Kim, Hyun-jin;Min, Jung Hwan;Park, Hoon-Hee
    • Journal of radiological science and technology
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    • v.38 no.4
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    • pp.337-345
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    • 2015
  • After the Fukushima nuclear accident in 2011, concerns about radiation by people are increasing rapidly. If people could know how much they will be exposed by radiation, it may help them avoiding it and understand what exactly radiation is. By doing this, we were helping to reduce the anxiety of radiation contamination. In this study, we have researched figures of radioactivity with 'Captus-3000 thyroid uptake measurement systems' in well counter detector system. The materials were measured with Briquette, Shiitake, Pollock, Button type battery, Alkaline battery, Topsoil, Asphalt, Gasoline, Milk powder, Pine, Basalt stone, Pencil lead, Wasabi, Coarse salt, Tuna(can) Cigar, Beer, and then we categorized those samples into Land resources, Water resources, Foodstuff and Etc (Beer classified as a water resources has been categorized into Foodstuff). Also, we selected the standard radiation source linear 137Cs to measure the sensitivity of well counter detector. After that, we took cpm(counter per minute) for the well counter detector of thyroid uptake system's sensitivity. Then we compared the results of each material's cpm and converted those results to Bq/kg unit. There were a little limitation with the measurement equipment because it has less sensitivity than other professional equipment like 'High purity germanium radiation detector'. Moreover, We didn't have many choices to decide the materials. As a result, there are macroscopic differences among the rates of material's spectrum. Therefore, it had meaningful results that showed how much each material had emitted radiation. To compare the material's cpm with BKG, we've compounded their spectrums. By doing that, we were able to detect some differences among the spectrums at specific peak section. Lastly, Button type battery, Alkaline Battery, Briquette, Asphalt and Topsoil showed high value. There were classified emitting high radiation Group A and emitted lower radiation Group B. The Group A, alkaline battery showed higher rate of radiation by 7.67 %, and Button type battery was yield 4.65 % higher rate than BKG. Additionally, Asphalt (8.03 %), Topsoil (3.76 %), Briquette (7.46 %) were yield for higher values. Several samples of the daily supplies were yield little higher, but it seems safe to use in daily lives. In the case of the 'Foodstuff', all of the samples were safe and they were under the radiation limits of the Ministry of Food and Drug Safety for Food; thus, we highly recommend this study to you as a reference of common daily routine.

Development of the Electric Lancing Device and the Lancet to Prevent the Secondary Contamination by Needlestick Injury (채혈바늘에 의한 2차 감염 방지기능을 갖는 랜싯과 전동식 채혈기의 개발)

  • Hong, Sung-Chul;Jang, Seok-Jin;Kang, Shin-Han
    • Proceedings of the KAIS Fall Conference
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    • 2010.11b
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    • pp.820-823
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    • 2010
  • 본 연구는 채혈바늘에 의해 발생하는 2차 감염을 방지하기 위한 안전 랜싯(Lancet)을 설계 개발하고 연속하여 채혈하는 경우에 쉽게 그리고 편리하게 사용할 수 있도록 무선 전동방식의 채혈기를 설계제작을 목적으로 한다. 안전랜싯은 채혈침과 보호캡이 일체형으로 설계되어 채혈 순간을 제외하고는 채혈침이 항상 보호캡 속에 있도록 하여 채혈바늘에 의한 사고를 방지하도록 하였다. 전동 채혈기는 충전건전지를 전원으로 하고 솔레노이드의 작동으로 랜싯을 타격하여 채혈하도록 설계되었으며, 연발 타격 또는 단발타격의 기능을 선택하도록 설계 제작되었다. 이 채혈기는 한방병의원의 사혈기로도 사용되도록 제작되었다.

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Energy-Balanced Distributed Computing Model for Sensor Network (센서 네트워크의 에너지 균형을 고려한 분산 컴퓨팅 모델)

  • Kim, Jong-Hwa;Choi, Jong-Moo
    • Proceedings of the Korean Information Science Society Conference
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    • 2007.06d
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    • pp.440-444
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    • 2007
  • 센서 네트워크를 구성하는 각 노드는 AA형 건전지를 사용하여 2년 6개월 이상 동작하는 것을 목표로 하며, 따라서 저전력을 고려하여 설계되어야 한다. 본 논문에서는 저전력 센서 네트워크를 위한 분산 컴퓨팅 모델을 제안한다. 제안된 모델은 우선 센서 노드에서 처리를 위한 에너지 소비와 통신을 위한 에너지 소비의 크기를 분석한다. 그리고 처리 에너지 비용을 지불하여 통신 에너지 감소라는 이득을 얻을 수 있음을 보인다. 한편, 이 기법은 특정 센서 노드의 에너지를 집중적으로 소비할 수 있음을 보이고, 이를 해결할 수 있는 에너지 균형 분산 컴퓨팅 모델을 제안한다. 시뮬레이션 기반 실험 결과 제안된 모델이 전체적인 에너지 소비를 낮추었을 뿐 아니라 센서 노드들 간에 에너지 균형도 이루고 있음을 알 수 있었다.

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A Performance Testing Device of Drycell (건전지의 성능평가 장치)

  • Jeong, Heon
    • Journal of Institute of Control, Robotics and Systems
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    • v.17 no.2
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    • pp.171-175
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    • 2011
  • In this paper, I have developed a high-speed and high-resolution measuring device in order to check the performance of drycell. The system is developed for the drycell manufacturing plant. Measuring time is one of key factors to inference on the production speed. So the developed system is designed to generate the classified result up to 1200ea/min. In the other words, each product can be classified within 25ms. There have been many studies to estimate both state of charge as well as state of health, such as OCV (Open Circuit Voltage), SC (Short Circuit) and measuring impedance with frequency pulse. But those methods take a few second due to surface discharge. To overcome the phenomenon, I developed the method to engage the reverse current to two electrodes of battery. As a result, I could achieve to measure the indigenous capacity without the problem of surface discharge.

Beta Gamma Survey Meter (베타 및 감마선 계측용 서어베이 미터)

  • 박인용;이병선
    • Journal of the Korean Institute of Telematics and Electronics
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    • v.8 no.1
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    • pp.1-8
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    • 1971
  • A survey meter which is used a G-M counter sensitive to beta and gamma radiation is studied. This device is completely transistorized, operated with battery, and can be read directly the 3 full-scale meter range: 2.5, 25 and 250 MR/HR respectively. The collector-coupled monostabel multivibrator consisting of a counting-rate meter circuit, and the astable blocking oscillator consisting of a dc-de converter for power supply are analyzed and derived the design dquations. To improve the resolving time of the G-M counter the device is designed to be triggered by low pulse in the order of 0.5v.

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Efficient TCP/IP Transmission Technology in Wireless Sensor Network for ITS Applications (ITS용 무선센서네트워크에서 효율적인 TCP/IP 전송기술)

  • Oh, Jong-Taek
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.8 no.1
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    • pp.76-81
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    • 2009
  • The transmitting node in WSN for ITS would be small and operated by battery, and the MCU in the node would be low speed with small sized memory and low power consumption. In this paper, the post-checksum method in which the checksum field is added to the tail of the TCP segment for ITS applications, is proposed to reduce data processing time and power consumption, and so there is no limitation of the transmitting data size.

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리튬전지 전용 고속 자동 블리스터 포장기 가상시제품 개발과 동특성에 관한 연구

  • 정상화;이경형
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2004.05a
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    • pp.220-220
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    • 2004
  • 최근 들어 블리스터 포장방식은 제품을 뜯어보지 않고 제품을 확인할 수 있는 장점을 가지고 있어 여러 가지 상품포장에 이용되고 있다. 대부분의 건전지의 포장 역시 블리스터방식을 이용하여 포장을 하고 있다 그런데 카메라 및 각종 휴대용 전자장치에서 널리 사용되고 있는 리튬전지의 경우에서는 전지 자체가 가지고 있는 폭발위험성 때문에 블리스터 포장을 할 때 각별한 주의가 필요하다. 그러나 국내를 비롯한 국외에서도 일반 알카라인 전지 포장기계를 구조 변경하여 사용하고 있고 리튬전지 특성을 고려한 리튬전지 전용 블리스터 포장기는 개발되지 않고 있다.(중략)

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