The Journal of the Convergence on Culture Technology (문화기술의 융합)

The International Promotion Agency of Culture Technology (국제문화기술진흥원)
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Experimental Analysis of the Effects of Spray Nozzle Variations on Agricultural Pest Control Drones

농업용 방제 드론의 분사 노즐 변화에 따른 실험적분석

  • Wooram Lee (Dept. of Unmanned and Autonomous Vehicle Engineering, Kyungwoon Universitiy)
  • 이우람 (경운대학교 무인기공학과)
  • Received : 2024.08.15
  • Accepted : 2024.11.05
  • Published : 2024.11.30
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Abstract

An agricultural drones are the increasing demand for the use of multicopters in spraying operations, there is a growing emphasis on high operational efficiency, convenience, and applicability. In agricultural spraying tasks, efforts to address the issue of spraying drift have led to experimental validation of various nozzle designs aimed at reducing drift through comparative analysis with prior research. This study aims to experimentally validate the characteristics of drift associated with different nozzles and predict application performance by evaluating the target areas post-spraying. The results showed that the DG nozzle achieved a relatively higher coverage rate. As flight speed increased, coverage rate decreased relatively. This was due to reduced downward wind resulting from changes in the aircraft's tilt and increased rotor thrust, which enhanced drift and reduced the number of droplets reaching the target area. This was because higher flight altitude resulted in a wider effective spraying distance, which reduced the droplet deposition per unit area. Similarly, as flight altitude increased, the coverage rate also decreased relatively. This decrease in coverage was due to the wider effective spraying distance at higher altitudes, resulting in reduced droplet deposition per unit area. These findings allow for the derivation of optimal spraying conditions(flight altitude and speed) and aim to minimize drift in pest control operations, thereby applying these optimal conditions to improve the spraying process.

최근 멀티콥터를 적용한 농업용 방제 작업에 대한 수요가 높아짐에 따라 높은 작업 효율, 편의성 및 적용성 등에 관한 요구가 높아지고 있다. 농업용 방제 작업의 경우 비산 현상에 관한 문제를 개선하기 위해 선행연구와 비교분석을 통해 다양한 노즐에 대한 비산 현상 저감 방안에 대한 실험적 검증을 수행하였다. 본 연구에서는 노즐 변화에 따른 비산 현상에 관한 특성을 실험적으로 검증하는 것을 목적으로 하며, 살포 후 감수지에 대한 평가를 통해 도포성능을 예측할 수 있다. 실험 결과 DG 노즐이 피복률이 상대적으로 높게 나타났으며, 비행 속도가 증가함에 따라 피복률은 상대적으로 감소하였다. 이는 비행 속도를 증가하기 위해 기체의 기울기 변화 및 로터의 추력 증가에 따라 하향 풍이 상대적으로 감소하여 비산 현상에 대한 영향을 증가시켜 목표 지점에 낙하 입자를 감소시켰다. 비행 고도가 증가함에 따라 피복률은 상대적으로 감소하였다. 이는 비행 고도가 높아짐에 따라 유효 살포 거리가 넓어지며, 단위면적당 낙하 입자의 부착량이 감소하였다. 이를 통해 적절한 분사 조건(비행 고도 및 속도)을 도출할 수 있으며, 방제 작업의 비산 현상을 최소화하여 최적의 방제 작업 공정에 적용하고자 한다.

Keywords

Acknowledgement

이 연구는 2024년도 경운대학교 교내학술연구비 지원으로 연구되었음.

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