METHOD OF AUTOMATIC CONTROL OF TEMPERATURE-LIGHT REGIME IN GREENHOUSE Russian patent published in 2010 - IPC A01G9/26 

FIELD: agriculture.

SUBSTANCE: invention relates to agricultural machinery, namely to methods and systems of automatic control of temperature and light regime in greenhouses or other structures of a protected ground. The method includes splitting the vegetation period of plants in greenhouse at equal intervals, which duration an order of magnitude smaller than the constant time of the most high-velocity perturbation, calculation for each time interval of optimum temperature and this optimal temperature maintenance constant during the whole period of time. Then the air humidity, air temperature and illumination in the greenhouse are measured to obtain signals from the sensors of air, temperature and light, respectively, the age of plants are measured to obtain a signal from the counter device of plant age, at that these data enter the computer set point adjuster which calculates the average night temperature, then determines and sets the multidimensional optimum daily temperature at the criterion of productivity in the greenhouse.

EFFECT: invention enables to improve significantly the efficiency of light energy use and to increase productivity of plants themselves.