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LoRa와 USRP 기반 Micro-Doppler Radar를 이용한 모션 인식 기반 원격제어 시스템 구현
황의혁(Ui Hyeog Hwang),홍용기(Yong-Gi Hong),박재현(Jae Hyun Park) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.2
본 논문은 Micro-Doppler 레이더를 활용하여 모션 인식에 시스템을 구현하였으며, 이를 통해 인식한 모션 정보를 저전력 원거리 통신 기법인 LongRange (LoRa) 통신을 활용하여 IoT 시스템 등을 제어하는 모션인식 기반 원격 제어시스템을 구현하였다. 구체적으로 USRP와 GNU Radio를 이용하여 Micro-Doppler Radar를 구현하였으며, 이 레이더를 활용하여 수집된 모션의 Micro-Doppler Signature를 Linear Discriminant Analysis를 활용하여 사람의 3가지 손동작에 대하여 판별할 수 있는 알고리즘을 구현하였다. 끝으로 이를 통해 획득한 모션 정보를 전달하는 LoRa 통신 시스템을 구현하였고, 이는 원거리에서 원격으로 RC car 또는 드론 등을 제어할 수 있는 저전력 원격 제어 시스템에 활용할 수 있다.
임한종,채종일,민득영,조승렬,엄기선,홍성종,손문목,용태순,윤청하,황의혁,Im, Han-Jong,Chae, Jong-Il,Min, Deuk-Yeong,Jo, Seung-Ryeol,Eom, Gi-Seon,Hong, Seong-Jong,Son, Mun-Mok,Yong, Tae-Sun,GiovanniDeodato,HanneStrandgarrd,BounlayPhom 한국건강관리협회 2005 한국건강관리협회지 Vol.3 No.1
In order to investigate the epidemiological situation of intestinal parasite infections in Lao PDR, parasitological surveys were carried out on a national scale including 17 Provinces and the Vientiane Municipality. A total of 29,846 stool specimens were collected from primary schoolchildren in May 2000 June 2002 and examined once with the cellophane thick smear technique. The cumulative egg Positive rate For intestinal helminthes was 61.9%, BV species, the rate for As caris lumbricoides was 34.9%, hookworm 19.1%, Trichuris trichiura 25.8%,Opisthorchis viverrini 10.9%, Taenia spp. 0.6% and Hymenolepis spp. 0.2%. The northern mountainous regions suck as Phongsaly, Huaphan or Saysomboune Province showed higher prevalence(over 70%) of soil- transmitted helminthes. The regions along the Mekong River such as Khammuane, Saravaue or Savannakhet Province showed higher prevalence(over 20%)of fish-borne parasites. On the other hand, Schistosoma mekongi eggs were detected from1.7% of schoolchildren only in Champassak Province, a previously known endemic area. The highest prevalence was noted in Phongsaly Province(96.0%) and the lowest in Bolikhamxay Province(27.5%). An additional smal1-scale survey by cellophane anal swab detected Enterobius vermicularis eggs in 35.7% of 451 schoolchildren aged 6-8 in Khammuane, Vientiane, Champassak Province and the Vientiane Municipality. Meanwhile, the mean blood hemoglobin level of hootrworm-infected children was not lower than that of hookworm-uninfected children, suggesting that nutritional factors are more important than parasite infection per se. Nevertheless, the above results indicate that a nationwide parasite control project is necessary to reduce possible morbidity of parasitic diseases in the country.