선택한 단어 수는 입니다.
최소 단어 이상 선택하여야 합니다.
최소 단어 이상 선택하여야 합니다.
선택한 단어 수는 30입니다.
최대 10 단어까지만 선택 가능합니다.
최대 10 단어까지만 선택 가능합니다.
제안 방법
- Two hundred 5-year-old cherry trees were considered in our experiment. After setting the trees for which no deterrent system was installed last year as the non-treatment group and the trees for which the deterrent system was installed this year as the treatment group, the effect of the proposed system was investigated by comparing the damages in each year. According to the evaluation results, last year's non-treatment group exhibited a damage rate of 3.
- In this study, the authors designed a bird deterrent system with increased speaker sound pressure and a rotating speaker to enhance the deterrent effect of the conventional acoustic (adversarial sounds) bird deterrent system and evaluated the deterrent effect of the improved system. The improvement in speaker sound pressure was verified by the improvement in sound effect distance from approximately 30 m in the conventional design to a maximum of 60 m based on 70 dB(A), and the rotating structure improved directionality from coverage only in the forward direction to coverage in all directions without directionality, thereby increasing the deterrence area of the deterrent system.
- In this study, the authors propose a bird deterrent system that can be applied at actual farming sites by adding an acoustic unit and a laser generator with a 360° rotating structure to expand the deterrence area of a previously proposed bird deterrent system[9].
- The improved bird deterrent system consists of a rotating speaker to improve the directionality of sound and a rotating laser module in the top portion of the system to add visual deterrence. Furthermore, this improved system employs a photovoltaic (PV) module so that users need not have to replace the system battery.
- The improved bird deterrent system has been designed with a 360° rotating structure comprising an acoustic unit that generates sounds associated with adversaries of birds; the sound pressure level has been improved by changing the speaker specifications, and a laser module has been added to provide a visual deterrent effect in order to maximize the deterrent effect on birds and increase the deterrence area.
- The improved bird deterrent system was installed on a cherry farm with severe bird damage to verify its deterrence effect. Two hundred 5-year-old cherry trees were considered in our experiment.
- According to the arbitration cases of the National Environmental Dispute Resolution Commission, the sound exposure criteria for ornamental birds is 50 dB(A), while the criteria for the effect of deterrent sound is 70 dB(A) for actual farmhouses with an open environment in all directions considering the scattering effect of sound. We determined the deterrence area of the deterrent sounds by measuring the distance to the reference decibel in all directions and calculating the accordingly based on the decibel measurement information along each speaker direction and distance. Fig.
대상 데이터
- The laser module comprises four 5-mW laser elements installed in the top portion of the deterrent system at an angle of 90°, and this module is designed to generate various visual patterns through a combination of control over the revolutions per minute (RPM) of rotation and that over the laser blinking frequency in the module.
- In the power unit of the improved bird deterrent system, a PV module has been included so that users need not replace the system battery. The specifications of the PV module include 18 V and single crystal structure and those of the internal battery include 12V and 10.2 AH. When fully charged, this battery can power the system for about 3 days based on the current control cycle in the absence of power generation from the PV module.
- The improved bird deterrent system was installed on a cherry farm with severe bird damage to verify its deterrence effect. Two hundred 5-year-old cherry trees were considered in our experiment. After setting the trees for which no deterrent system was installed last year as the non-treatment group and the trees for which the deterrent system was installed this year as the treatment group, the effect of the proposed system was investigated by comparing the damages in each year.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.