中国农业科技导报 ›› 2023, Vol. 25 ›› Issue (12): 103-110.DOI: 10.13304/j.nykjdb.2022.0035
• 智慧农业 农机装备 • 上一篇
刘鹏菊1(), 柳平增1(
), 张大磊2, 张艳1, 李辉1, 刘力宁1, 丁方军3
收稿日期:
2022-01-13
接受日期:
2022-04-12
出版日期:
2023-12-15
发布日期:
2023-12-12
通讯作者:
柳平增
作者简介:
刘鹏菊 E-mail: 2841430017@qq.com;
基金资助:
Pengju LIU1(), Pingzeng LIU1(
), Dalei ZHANG2, Yan ZHANG1, Hui LI1, Lining LIU1, Fangjun DING3
Received:
2022-01-13
Accepted:
2022-04-12
Online:
2023-12-15
Published:
2023-12-12
Contact:
Pingzeng LIU
摘要:
为实现设施黄瓜温室风口开度大小的精准控制,对温室内温度变化趋势进行了预测研究。将温室风口开度大小状态和温室内外各环境因子作为输入因子,利用逐步回归的方法构建温室温度预测模型,模型决定系数R2 最小为0.941。采用主成分分析方法建立黄瓜长势关系表达式,然后利用Lasso回归构建基于环境因子的设施黄瓜生长模型。将温室温度预测模型与设施黄瓜生长模型相结合,最终构建了设施黄瓜温室专用风口控制模型,实现了温室风口开度大小的自动控制,提升了设施黄瓜温室的智能化管理水平。
中图分类号:
刘鹏菊, 柳平增, 张大磊, 张艳, 李辉, 刘力宁, 丁方军. 基于环境因子的设施黄瓜通风控制模型[J]. 中国农业科技导报, 2023, 25(12): 103-110.
Pengju LIU, Pingzeng LIU, Dalei ZHANG, Yan ZHANG, Hui LI, Lining LIU, Fangjun DING. Ventilation Control Model of Cucumber in Facility Based on Environmental Factors[J]. Journal of Agricultural Science and Technology, 2023, 25(12): 103-110.
指标 Index | Y | X1 | X2 | X3 | X4 | X5 | X6 | X7 | X8 | X9 |
---|---|---|---|---|---|---|---|---|---|---|
Y | 1 | |||||||||
X1 | 0.987 | 1 | ||||||||
X2 | -0.819 | -0.856 | 1 | |||||||
X3 | 0.738 | 0.756 | -0.704 | 1 | ||||||
X4 | -0.177 | -0.177 | -0.021 | 0.07 | 1 | |||||
X5 | 0.778 | 0.789 | -0.664 | 0.513 | -0.482 | 1 | ||||
X6 | -0.634 | -0.657 | 0.764 | -0.555 | -0.049 | -0.575 | 1 | |||
X7 | 0.295 | 0.297 | -0.306 | 0.271 | -0.051 | 0.281 | -0.269 | 1 | ||
X8 | 0.109 | 0.122 | -0.154 | 0.109 | -0.022 | 0.142 | -0.177 | -0.147 | 1 | |
X9 | 0.842 | 0.802 | -0.806 | 0.671 | -0.013 | 0.567 | -0.567 | 0.351 | 0.059 | 1 |
表1 环境指标相关性
Table 1 Correlation analysis of environmental indicators
指标 Index | Y | X1 | X2 | X3 | X4 | X5 | X6 | X7 | X8 | X9 |
---|---|---|---|---|---|---|---|---|---|---|
Y | 1 | |||||||||
X1 | 0.987 | 1 | ||||||||
X2 | -0.819 | -0.856 | 1 | |||||||
X3 | 0.738 | 0.756 | -0.704 | 1 | ||||||
X4 | -0.177 | -0.177 | -0.021 | 0.07 | 1 | |||||
X5 | 0.778 | 0.789 | -0.664 | 0.513 | -0.482 | 1 | ||||
X6 | -0.634 | -0.657 | 0.764 | -0.555 | -0.049 | -0.575 | 1 | |||
X7 | 0.295 | 0.297 | -0.306 | 0.271 | -0.051 | 0.281 | -0.269 | 1 | ||
X8 | 0.109 | 0.122 | -0.154 | 0.109 | -0.022 | 0.142 | -0.177 | -0.147 | 1 | |
X9 | 0.842 | 0.802 | -0.806 | 0.671 | -0.013 | 0.567 | -0.567 | 0.351 | 0.059 | 1 |
风口开度Opening size/% | 回归自变量Regression independent variable | ||||||||
---|---|---|---|---|---|---|---|---|---|
X1 | X2 | X3 | X4 | X5 | X6 | X7 | X8 | X9 | |
0 | 20.388 | 5.084 | 11.127 | 1.510 | 14.771 | 12.126 | 1.308 | 1.385 | 3.542 |
25 | 15.705 | 22.809 | 5.077 | 13.338 | 6.074 | 20.151 | 1.423 | 1.523 | 7.074 |
50 | 14.171 | 5.278 | 10.296 | 2.985 | 2.357 | 4.846 | 1.116 | 1.177 | 2.380 |
75 | 3.551 | 6.218 | 1.835 | 2.801 | 2.902 | 5.543 | 1.110 | 1.108 | 2.275 |
100 | 5.978 | 8.135 | 2.024 | 3.564 | 5.510 | 6.482 | 1.054 | 1.076 | 2.605 |
表2 不同风口开放下环境因子的VIF
Table 2 VIF of environment fact under different opening size
风口开度Opening size/% | 回归自变量Regression independent variable | ||||||||
---|---|---|---|---|---|---|---|---|---|
X1 | X2 | X3 | X4 | X5 | X6 | X7 | X8 | X9 | |
0 | 20.388 | 5.084 | 11.127 | 1.510 | 14.771 | 12.126 | 1.308 | 1.385 | 3.542 |
25 | 15.705 | 22.809 | 5.077 | 13.338 | 6.074 | 20.151 | 1.423 | 1.523 | 7.074 |
50 | 14.171 | 5.278 | 10.296 | 2.985 | 2.357 | 4.846 | 1.116 | 1.177 | 2.380 |
75 | 3.551 | 6.218 | 1.835 | 2.801 | 2.902 | 5.543 | 1.110 | 1.108 | 2.275 |
100 | 5.978 | 8.135 | 2.024 | 3.564 | 5.510 | 6.482 | 1.054 | 1.076 | 2.605 |
风口开度Opening size/% | 变量名称 Variable | 非标准化系数Denormalization coefficient | 标准化系数Normalization coefficient | 显著性 Significance | |
---|---|---|---|---|---|
回归系数 Regression coefficient | 标准误差 Standard Error | ||||
0 | 常量Constant | 1.772 | 2.107 | — | 0.401 |
X1 | 0.560 | 0.043 | 0.557 | 0.000 | |
X3 | 0.105 | 0.011 | 0.311 | 0.000 | |
X5 | 0.412 | 0.063 | 0.231 | 0.000 | |
X6 | 0.036 | 0.006 | 0.204 | 0.000 | |
X9 | 0.026 | 0.002 | 0.253 | 0.000 | |
X2 | 0.071 | 0.010 | 0.157 | 0.000 | |
X4 | -0.313 | 0.057 | -0.065 | 0.000 | |
25 | 常量Constant | -4.117 | 0.979 | — | 0.000 |
X1 | 0.909 | 0.026 | 0.898 | 0.000 | |
X9 | 0.054 | 0.003 | 0.364 | 0.000 | |
X2 | 0.070 | 0.006 | 0.284 | 0.000 | |
50 | 常量Constant | -0.217 | 0.815 | — | 0.490 |
X1 | 0.799 | 0.013 | 0.800 | 0.000 | |
X9 | 0.085 | 0.003 | 0.305 | 0.000 | |
X2 | 0.102 | 0.007 | 0.241 | 0.000 | |
X5 | -0.061 | 0.008 | -0.130 | 0.000 | |
X4 | -0.077 | 0.012 | -0.058 | 0.000 | |
X8 | 0.003 | 0.001 | 0.033 | 0.000 | |
75 | 常量Constant | -0.799 | 0.651 | — | 0.220 |
X1 | 0.842 | 0.012 | 0.787 | 0.000 | |
X9 | 0.066 | 0.002 | 0.319 | 0.000 | |
X2 | 0.054 | 0.005 | 0.143 | 0.000 | |
X7 | -0.134 | 0.025 | -0.044 | 0.000 | |
X8 | -0.002 | 0.001 | -0.034 | 0.000 | |
X4 | -0.035 | 0.009 | -0.040 | 0.000 |
表3 基于不同风口开度的温度预测模型系数
Table 3 Temperature prediction model coefficients based on different opening size
风口开度Opening size/% | 变量名称 Variable | 非标准化系数Denormalization coefficient | 标准化系数Normalization coefficient | 显著性 Significance | |
---|---|---|---|---|---|
回归系数 Regression coefficient | 标准误差 Standard Error | ||||
0 | 常量Constant | 1.772 | 2.107 | — | 0.401 |
X1 | 0.560 | 0.043 | 0.557 | 0.000 | |
X3 | 0.105 | 0.011 | 0.311 | 0.000 | |
X5 | 0.412 | 0.063 | 0.231 | 0.000 | |
X6 | 0.036 | 0.006 | 0.204 | 0.000 | |
X9 | 0.026 | 0.002 | 0.253 | 0.000 | |
X2 | 0.071 | 0.010 | 0.157 | 0.000 | |
X4 | -0.313 | 0.057 | -0.065 | 0.000 | |
25 | 常量Constant | -4.117 | 0.979 | — | 0.000 |
X1 | 0.909 | 0.026 | 0.898 | 0.000 | |
X9 | 0.054 | 0.003 | 0.364 | 0.000 | |
X2 | 0.070 | 0.006 | 0.284 | 0.000 | |
50 | 常量Constant | -0.217 | 0.815 | — | 0.490 |
X1 | 0.799 | 0.013 | 0.800 | 0.000 | |
X9 | 0.085 | 0.003 | 0.305 | 0.000 | |
X2 | 0.102 | 0.007 | 0.241 | 0.000 | |
X5 | -0.061 | 0.008 | -0.130 | 0.000 | |
X4 | -0.077 | 0.012 | -0.058 | 0.000 | |
X8 | 0.003 | 0.001 | 0.033 | 0.000 | |
75 | 常量Constant | -0.799 | 0.651 | — | 0.220 |
X1 | 0.842 | 0.012 | 0.787 | 0.000 | |
X9 | 0.066 | 0.002 | 0.319 | 0.000 | |
X2 | 0.054 | 0.005 | 0.143 | 0.000 | |
X7 | -0.134 | 0.025 | -0.044 | 0.000 | |
X8 | -0.002 | 0.001 | -0.034 | 0.000 | |
X4 | -0.035 | 0.009 | -0.040 | 0.000 |
风口开度Opening size/% | 变量名称 Variable | 非标准化系数Denormalization coefficient | 标准化系数Normalization coefficient | 显著性 Significance | |
---|---|---|---|---|---|
回归系数 Regression coefficient | 标准误差 Standard Error | ||||
100 | 常量Constant | -3.319 | 0.400 | — | 0.000 |
X1 | 0.763 | 0.019 | 0.707 | 0.000 | |
X9 | 0.075 | 0.003 | 0.308 | 0.000 | |
X5 | 0.138 | 0.018 | 0.109 | 0.000 | |
X2 | 0.076 | 0.010 | 0.156 | 0.000 | |
X6 | -0.042 | 0.007 | -0.105 | 0.000 |
表3 基于不同风口开度的温度预测模型系数 (续表Continued)
Table 3 Temperature prediction model coefficients based on different tuyere openings
风口开度Opening size/% | 变量名称 Variable | 非标准化系数Denormalization coefficient | 标准化系数Normalization coefficient | 显著性 Significance | |
---|---|---|---|---|---|
回归系数 Regression coefficient | 标准误差 Standard Error | ||||
100 | 常量Constant | -3.319 | 0.400 | — | 0.000 |
X1 | 0.763 | 0.019 | 0.707 | 0.000 | |
X9 | 0.075 | 0.003 | 0.308 | 0.000 | |
X5 | 0.138 | 0.018 | 0.109 | 0.000 | |
X2 | 0.076 | 0.010 | 0.156 | 0.000 | |
X6 | -0.042 | 0.007 | -0.105 | 0.000 |
主成分 Principal component | 特征值 Eigenvalue | 贡献率 Contribution/% | 累计贡献率 Cumulative contribution/% |
---|---|---|---|
P1 | 5.751 | 95.845 | 95.845 |
P2 | 0.221 | 3.688 | 99.530 |
P3 | 0.019 | 0.312 | 99.842 |
P4 | 0.007 | 0.110 | 99.952 |
P5 | 0.006 | 0.048 | 100.00 |
P6 | 5.431e-6 | 9.052e-5 | 100.00 |
表5 黄瓜生长指标与贡献值
Table 5 Growth index and contribution value of cucumber
主成分 Principal component | 特征值 Eigenvalue | 贡献率 Contribution/% | 累计贡献率 Cumulative contribution/% |
---|---|---|---|
P1 | 5.751 | 95.845 | 95.845 |
P2 | 0.221 | 3.688 | 99.530 |
P3 | 0.019 | 0.312 | 99.842 |
P4 | 0.007 | 0.110 | 99.952 |
P5 | 0.006 | 0.048 | 100.00 |
P6 | 5.431e-6 | 9.052e-5 | 100.00 |
因变量Dependent variable | 自变量Variable | 估计值Estimate | 标准误差Std. Error | 显著性Significance |
---|---|---|---|---|
黄瓜长势 Cucumber growth | 常数项Intercept | -4.48 | 1.024 275 8 | P<0.001 |
X10 | 0.952 | 0.018 762 4 | P<0.001 | |
X11 | 0.043 | 0.007 364 2 | P<0.001 | |
X12 | 0.060 | 0.013 774 9 | P<0.001 |
表6 基于Lasso回归的设施黄瓜生长模型分析
Table 6 Analysis of greenhouse cucumber growth model based on Lasso regression
因变量Dependent variable | 自变量Variable | 估计值Estimate | 标准误差Std. Error | 显著性Significance |
---|---|---|---|---|
黄瓜长势 Cucumber growth | 常数项Intercept | -4.48 | 1.024 275 8 | P<0.001 |
X10 | 0.952 | 0.018 762 4 | P<0.001 | |
X11 | 0.043 | 0.007 364 2 | P<0.001 | |
X12 | 0.060 | 0.013 774 9 | P<0.001 |
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