| 摘要 |
The air humidity control device in a climate chamber relates to electrical engineering and can be used for physiological and biomedical characterization of plants in the course of their selection for heat-resistance. The device comprises two circuits consisting of a temperature sensor, a linearizing circuit, a delay unit and a relative humidity sensor, a linearizing circuit, a delay unit in series connected. The first of them is connected with an adder unit and the first and second multipliers and the second is connected with a multiplier and an adder unit, the multipliers are connected between them and with an adder unit and comprise an indicating unit. In it there is an additional control unit, a humidity unit and a drying unit. Herewith an adder unit output is connected with an indicating unit input and with control unit input; the first output being connected to a humidity unit and the second is connected to a drying unit. The device provides with automatic, long term and uniform support of programmed level of relative air humidity in the closed artificial climate chamber volume to increase reliability of its application. |
