自动喷雾系统是房主或小型企业控制成年蚊子的便捷方式。向Anastasia蚊子控制区(AMCD)提供了一个这样的系统,用于评估以控制笼中的埃及伊蚊。该系统由3个喷雾罐组成,2台泵,水位传感器,和流量计,并通过装有专用控制软件的Android平板电脑进行控制。系统的评估包括校准测试,液滴表征,在开放的领域喷雾分散,以及使用生物测定笼进行死亡率评估的有效性测试。对于这些测试,使用总共120m的管将14个相距4m的喷嘴的环连接并保持在1m的高度。所有喷嘴均布置在东西方向的16×12m矩形中。在13.0、15.5和18巴的压力下喷洒水用于校准和液滴尺寸测量;在18巴的压力下喷洒水和10%红色染料溶液用于喷雾分散,在18bar压力下喷洒0.17%的均衡器20-20溶液进行死亡率测试。所有3次重复测试均在上午9:00至11:30之间进行。在此期间,温度范围为21-26°C,相对湿度从54-95%,风速为0-2公里/小时。来自所有14个喷嘴的组合流速受到压力的显著影响,并且与机器计算的流速一致。所有喷嘴的流速相似,标准误差为0.82mL/min。由DV0.1、DV0.5和DV0.9表示的液滴特性不受喷嘴的影响,但如预期的那样随着压力的增加而降低。卡片上的覆盖率,喷雾分散的指示器,范围从20-100%,发现风向增加。蚊子死亡率在风向上表现出相似的增加趋势,范围为30%至100%。笼子的位置对蚊子的死亡率没有影响。这些结果表明,这种喷雾的有效性取决于风向。结果,然而,没有风时可能会有所不同,这可能是在进行这些申请的时候的情况。
Automated misting systems are a convenient way for homeowners or small businesses to control adult mosquitoes. One such system was presented to the Anastasia Mosquito Control District (AMCD) for evaluation to control caged Aedes aegypti. The system consisted of 3 spray tanks, 2 pumps, water level sensors, and flow meters, and was controlled through an Android tablet loaded with dedicated control software. The evaluation of the system included calibration tests, droplet characterization, spray dispersion in the open field, and effectiveness testing using bio-assay cages for mortality assessment. For these tests, a loop of 14 nozzles 4 m apart was connected and held at 1 m height utilizing a total of 120 m tube. All nozzles were arranged in a 16 × 12 m rectangle laid in the East-West direction. Water was sprayed for calibration and droplet size measurements at pressures of 13.0, 15.5, and 18 bar; water and 10 % red dye solution for spray dispersion at 18 bar pressure, and 0.17 % solution of equalizer 20-20 was sprayed at 18 bar pressure for mortality tests. All 3 replicated tests were conducted in the morning between 9:00 and 11:30am. During this time, temperature ranged from 21 to 26 °C, relative humidity from 54 to 95%, and wind speed from 0 - 2 km/hr. The combined flow rate from all 14 nozzles was significantly affected by pressure and was in agreement with the machine-calculated flow rate. There was a similar flow rate from all nozzles, indicated by a standard error of 0.82 mL/min. The droplet characteristics represented by DV0.1, DV0.5, and DV0.9 were not affected by nozzles but decreased with an increase in pressure as expected. The percentage of coverage on the cards, an indicator of spray dispersion, ranged from 20 -100%, and it was found to increase in the direction of the wind. Mosquito mortality showed a similar trend of increasing in the wind direction and ranged from 30 to 100 %. There was no effect of the location of cages on mosquito mortality. These results indicate that the effectiveness of this spray depends upon wind direction. The results, however, may be different when there is no wind, which may be the case during the times these applications are made.