• 한국경영과학회지
• /
• 제41권3호
• /
• pp.75-96
• /
• 2016

This paper investigates the usefulness of drones in an urban delivery system. We define the vehicle and drone routing problem with time window (VDRPTW) and present a model that can describe a dual mode delivery system consisting of drones and vehicles in the metropolitan area. Drones are relatively free from traffic congestion but have limited flight range and capacity. Vehicles are not free from traffic congestion, and the complexity of urban road network reduces the efficiency of vehicles. Using drones and vehicles together can reduce inefficiency of the urban delivery system because of their complementary cooperation. In this paper, we assume that drones operate in a point-to-point manner between the depot and customers, and that customers in the need of fast delivery are willing to pay additional charges. For the experiment datasets, we use instances of Solomon (1987), which are well known in the Vehicle Routing Problem society. Moreover, to mirror the urban logistics demand trend, customers who want fast delivery are added to the Solomon's instances. We propose a hybrid evolutionary algorithm for solving VDRPTW. The experiment results provide different useful insights according to the geographical distributions of customers. In the instances where customers are randomly located and in instances where some customers are randomly located while others form some clusters, the dual mode delivery system displays lower total cost and higher customer satisfaction. In instances with clustered customers, the dual mode delivery system exhibits narrow competition for the total cost with the delivery system that uses only vehicles. In this case, using drones and vehicles together can reduce the level of dissatisfaction of customers who take their cargo over the time-window. From the view point of strategic flexibility, the dual mode delivery system appears to be more interesting. In meeting the objective of maximizing customer satisfaction, the use of drones and vehicles incurs less cost and requires fewer resources.

• 항공우주정책ㆍ법학회지
• /
• 제35권2호
• /
• pp.281-312
• /
• 2020

최근 경제활동이 어려움에도 불구하고, on-line 시장이 off-line 시장을 추월하고 있다. 미국의 아마존 최고경영자인 제프 베조스가 드론을 이용한 택배 서비스가 가능하다는 것을 언급한 이래 드론활용에 관한 지금껏 보지 못한 새로운 관점과 가치를 창출하고 있다. 드론은 다양한 영역에서 활용 중에 있다. 그중 드론을 이용한 택배 서비스는 4차 산업혁명과 맞물려 우리나라의 미래 성장 동력이 될 것이다. 하지만, 드론이 실용화됨에 따라 공중충돌이나 추락으로 인한 인명과 재산피해, 개인정보보호 같은 문제가 예상되기도 한다. 미래 드론의 실용화는 선택이 아니라 필연이다. 드론의 실용화를 위한 방안으로서 첫째, 드론 이용에 따른 안전성 확보와 드론 안전성에 대한 최소한의 기준 체계인 국가인증 체계 확보, 둘째, 드론 사용 활성화를 인한 각종 인프라 확보, 셋째, 항공규제 및 개인정보보호 등 법·규정 면에서 보완이 필요하다.

• 대한임베디드공학회논문지
• /
• 제14권3호
• /
• pp.157-163
• /
• 2019

As the drone industry has grown greatly in recent years, drones are being used or developed in many industrial fields such as image shooting, pesticide application, delivery service, food delivery etc. In this paper, therefore, we developed a program that takes a user's desired area at a certain height using a camera-equipped drone and obtains the area of the zone the user wants through image processing. The first user selects an area or a path. Afterwards, the drone flies and takes pictures, and then measures the user's needs. A digital image taken at a constant height and with the same resolution is composed of pixels, the area can be calculated easily if we know the number of pixels in the zone the user wants. Particularly, it is easy to calculate the area of various shaped zones, not terrain shapes such as triangles and squares. In addition, the total area of specific places of the entire zone can be calculated. With the program of this paper, anyone can easily calculate the area of the place the user wants using a drone rather than calculating the area through difficult formulas or specialized equipment.

• 한국컴퓨터정보학회논문지
• /
• 제22권3호
• /
• pp.147-153
• /
• 2017

The main subject of year 2016 Davos forum was "The 4th Industrial Revolution." Recently, interests and investment in drone market, so called industrial revolution in the sky is growing in many countries around the world. Before, drone was used for military purpose such as reconnaissance or attacking but today, it is used in various private sectors such as unmanned delivery service, agriculture, leisure activities, etc. Presently, many major countries in the world are already involved in the 'war without gunfire' to be dominant in this drone industry. Korean government also has announced an extreme relaxation of regulations for growing drone industry by opening a conference with Ministers related to economics. During the conference, business scope of drone which was limited to agriculture, photographing, and observation was expanded to all the fields except for cases hindering national safety and security. In terms of shooting purpose drone its process of receiving approval for flight and shooting is simplified to online registration. What is more, drone delivery service will be allowed in island areas such as Goheung, Yeongwol, etc from first term of year 2017. Finding the way to apply drone in criminal investigation is also speeding up. Recently, Public Safety Policy Research Center in Korean National Police University has inquired for research service and its result will be out around November. Likewise, although more and stronger foundation for supporting drone industry is made but there are still, some opinions saying that we should take a careful approach in consideration to the side effect such as abuse in crime. One may also try terror by placing a dangerous substance. If drone falls, it may hurt any civilians. Moreover, if shopping purpose drone is hacked, it may result in violation of privacy. Compared to America, Europe, and China, we are at the very beginning stage of drone industry and it is necessary to reorganize legal issues to grow this industry. This can be thought from two perspectives; first, the growth of drone industry is blocked by difficult regulations on Aviation Law and Radio Regulation Law. The second issue is the safety and privacy that are required for operating drone. For the advanced technologies to make human life more profitable, more active and proactive actions are required by criminal law side. In preparation to the second mechanical era where man and machines should go together, I hope that responsible preparation is required in all fields including the criminal law.

• 한국전자통신학회논문지
• /
• 제10권9호
• /
• pp.973-978
• /
• 2015

전 세계적으로 드론을 이용한 택배서비스가 새로운 주요사업으로 떠오르고 있다. 미국의 DHL 운송업체는 이미 드론을 이용한 택배서비스를 시작하였으며 구글과 아마존, 그리고 중국의 알리바바, 바이두에서도 드론 택배사업에 적극적으로 나서고 있다. 그러나, 이러한 사업이 아직 활성화 되지 못하는 이유는 운영하는데 있어서 몇가지 문제점을 가지고 있기 때문이다. 사람들이 활보하는 거리 위에서 무거운 물건들을 배송하는 일이기 때문에 다양한 보안성과 안전성을 고려해야만 한다. 드론 간에 원활한 네트워크를 구성하여 서로 충돌을 회피할 수 있도록 드론 간에 정보를 교환함으로써 이러한 문제점을 해결할 수 있다. 이를 위해, 효율적인 망성능이 필수적이며 본 논문에서는 옵넷 시뮬레이터를 통하여 드론 간의 원활한 통신을 위한 효율적인 라우팅 프로토콜을 비교함으로써 이러한 문제점을 보완하고자 한다. 드론 간 통신을 위한 MANET을 구성하고 이를 시뮬레이션을 통하여 효율적인 라우팅 프로토콜을 제안하고자 한다.

• International Journal of Internet, Broadcasting and Communication
• /
• 제9권4호
• /
• pp.31-37
• /
• 2017

Recently Drone technology is emerging as an alternative new way of distribution systems services. Amazon, Google which are global network chain distribution companies are developing an idea of Drone based delivery service and applied for patent for Drone distribution systems in USA. In this paper, we investigate a way to adopt Drone system to Air Cargo logistics, in particular, drone system based on combination of Light ID and RFID technology in the management procedure in stock warehouse. Also we explain the expected impact of Drone systems to customs declaration process. In this paper, we address the investigated limitations of Drone by the Korean Aviation Act as well as suggest the directions of future research for application of Drone to Air logistics industry with investigated limitations.

• 전자통신동향분석
• /
• 제38권3호
• /
• pp.11-19
• /
• 2023

Drones, which were early operated by remote control, have evolved to enable autonomous flight by combining various sensors and software tools. In particular, autonomous flight of drones was possible since the application of GNSS-RTK (global navigation satellite system with real-time kinematic positioning), a precision satellite navigation technology. For instance, unmanned drone delivery based on GNSS-RTK data was demonstrated for pizza delivery in Korea for the first time in 2021. However, the vulnerabilities of GNSS-RTK should be overcome for delivery drones to be commercialized. In particular, jamming in the navigation system and low positioning accuracy in urban areas should be addressed. Solving these two problems can lead to stable flight, takeoff, and landing of drones in urban areas, and the corresponding solutions are expected to establish a hybrid positioning technology. We discuss current trends in hybrid positioning technology that can either replace or complement GNSS-RTK for stable drone autonomous flight.

• 한국콘텐츠학회논문지
• /
• 제21권12호
• /
• pp.375-383
• /
• 2021

COVID-19로 인해 사람들은 외출과 모임 자제로 온라인 쇼핑, 온라인 여행, 화상회의 등 새로운 라이프 스타일을 구축하고 있다. 이러한 급격한 사회의 변화는 새로운 문제들을 야기시킴과 동시에 기존의 문제들을 심화시키고 있다. 특히 온라인 소비가 크게 증가함에 따라 생활물류산업에서는 교통체증, 대기오염, 배송기사의 과중한 업무 등이 심화되고 있으며 대면배송이 새로운 문제점으로 나타나고 있다. 4차 산업혁명의 등장으로 드론에 인공지능, 자율주행 등을 활용한 무인 배달이 기존 생활물류산업의 대체산업으로 떠오르고 있으나 드론의 비행에 따른 물류시설의 공간과 추가적인 물류부지 확보가 해결되어야 하는 새로운 문제점으로 나타난다. 따라서, 기존의 문제들과 새롭게 생겨난 문제들을 해소할 수 있는 드론을 위한 물류시설의 공간으로 기존 운수 사업인 지하철을 활용하여 물류 이동과 보관, 배송 등과 같은 부가적인 서비스를 연계하고자 한다.

• 전기전자학회논문지
• /
• 제22권3호
• /
• pp.747-753
• /
• 2018

Currently, many companies have succeeded in logistics delivery experiments utilizing drone and report it. When a drone is used commercially, long-term flight is an important performance that a drone should have. However, unlike vehicles operated on the ground, drone is a vehicle that continues to consume energy when maintaining the current altitude or moving to the destination. Therefore, the drones can fly for a long time as the capacity of the battery is large, but the batteries with large capacity are restricted by heavy weight and it acts as a limiting factor in a commercial use. To address this issue, we attempt to compare how far we can fly than forward flight based on the flight pattern with the same energy consumption condition. In this paper, the comparison of energy consumption was performed in three flight pattern, forward flight without altitude change and forward flight with altitude change, by computer simulation and it shows the increasing of flight distances when the quadrotor fly with altitude change from high altitude to low altitude.

• 한국전자통신학회논문지
• /
• 제16권5호
• /
• pp.969-974
• /
• 2021

우리나라는 국토교통 7대 신산업 중 하나로 무인 항공기의 하나의 종류인 드론 산업을 선정하여 드론 산업활성화를 위해 드론특별자유화구역을 선정하고 드론 관련 법안을 신설, 개정하는 등의 노력을 하고 있다. 이러한 노력을 통해 향후 드론 택배, 드론 택시 등이 운용될 것으로 보인다. 이에 드론과 고정익, 회전익 등의 기존 항공기들과의 다자간 충돌 회피 시스템을 구축하여 발생 가능한 드론과 항공기간 공중 충돌에 대비하여야 한다. 이에. 그 방안을 제시하려 한다.