CAJ | 학술논문

桁架式超声雾化栽培器的根域雾场及温度场对雾化栽培效果的影响极大,甚至决定了雾培的成败.应用NI PCI-6110数据采集卡在Labview平台上,构建了温湿度的实时采集系统;以PIC16F877A芯片为核心构建了喷雾控制系统;应用四因素五水平的二次回归正交旋转组合设计试验方法,研究了出风口面积、室内温度、雾化率和喷雾时间对桁架式雾化栽培器栽培管道内雾滴沉积量、温度和湿度变化的影响,建立了雾滴沉积量和温湿度的二次回归模型,为该型雾化栽培器实现根际雾场以及温湿度最优控制提供了试验依据.结果表明:喷雾时间、雾化率以及出风口面积和室内温度的交互作用对上下管道内雾滴沉积量的影响显著;出风口面积,室内温度、雾化率和喷雾时间对上下管道内温度影响显著;出风口面积和室内温度的交互作用对上管道内温度影响显著;出风口面积,室内温度和喷雾时间对上下管道内湿度的影响显著.
항가식초성무화재배기적근역무장급온도장대무화재배효과적영향겁대,심지결정료무배적성패.응용NI PCI-6110수거채집잡재Labview평태상,구건료온습도적실시채집계통;이PIC16F877A심편위핵심구건료분무공제계통;응용사인소오수평적이차회귀정교선전조합설계시험방법,연구료출풍구면적、실내온도、무화솔화분무시간대항가식무화재배기재배관도내무적침적량、온도화습도변화적영향,건립료무적침적량화온습도적이차회귀모형,위해형무화재배기실현근제무장이급온습도최우공제제공료시험의거.결과표명:분무시간、무화솔이급출풍구면적화실내온도적교호작용대상하관도내무적침적량적영향현저;출풍구면적,실내온도、무화솔화분무시간대상하관도내온도영향현저;출풍구면적화실내온도적교호작용대상관도내온도영향현저;출풍구면적,실내온도화분무시간대상하관도내습도적영향현저.
Temperature and humidity in root zone were crucial even vital factors that influence aeroponic efficiency of truss ultrasonic atomization cultivator. A real time acquisition system of temperature and humidity based on Labview with data acquisition card NI PCI-6110 and a spray control system with micro computer unit PIC16F877A were developed. How these factors of the wind outlet area, temperature in truss tube, atomization rate and spray time influenced the deposition of spraying droplets, temperature and humidity in cultivation pipes of truss ultrasonic atomization cultivator were investigated. Quadratic regression rotation combination orthogonality experiment design of four factors and five levels was adopted to study quadratic regression model of deposition of spraying droplets, temperature and humidity. According to regression equations of temperature and humidity of upper and lower layer pipeline, when the wind outlet area was 1174, 2205 and 2640 mm2, respectively, the corresponding spray time was 6.3, 5.9, 7.1h, indoor temperature 25 , corresponding℃atomization rate one, two and three, the temperature of prediction 25 ,℃ and humidity was 100%. And the corresponding temperature which we measured was 24.16, 24.25, 24.08 ,℃ and corresponding humidity was 98.96%, 98.58%, 99.23%, respectively. All control relative errors were less than 5%. Therefore, these regression equations could be used to predict the temperature and humidity of this type of ultrasonic atomization cultivator and be applied to the optimal control of temperature and humidity of plant root zone of this type of ultrasonic atomization cultivator. The results showed that the interaction of spray time, atomization rate, the wind outlet area and temperature had significant influence on the deposition of spraying droplets of upper and lower layer pipeline. The wind outlet area, temperature, atomization rate and spray time had significant influence on the temperature of upper and lower layer pipeline. The interaction of the wind outlet area and temperature had significant influence on the temperature of upper layer pipeline. The wind outlet area, temperature and spray time had significant influence on the humidity of upper and lower layer pipeline. This research provides experimental references for optimal controlling of truss ultrasonic atomization cultivator.