| Our country is the biggest protect culture country in the world, however the greenhouse is its important part. All sorts of greenhouse has the side ventilation-windows and the roof ventilation-windows. Through the opening and closing of them, using the natural ventilation can achieve several basic control desire goal of environment such as temperature, humidity, CO2 etc. on different circumstance.In the controlled environment, organizing the protect culture production process is the important technique guarantee for achieving high quality, high yield, high efficiency and sustainable development. On according of reducing energy consumption, reducing expenses, increasing the output benefit and realizing best utilizing of resource, adopting the controlled nature ventilation to adjust the dynamic temperature in greenhouse is a better solution, which can greatly improved the thermal humidity environment (especially in East-china area). Furthermore the research and development of greenhouse environment intelligence synthesize adjusting control system is the key items of our country agricultural and society development in "the tenth five years development layout" periods.Except for the simple greenhouse using the manual mechanism of rolling plastic film for the operation of ventilation windows at domestic and abroad, all mechanisms are adopted the equipment composing of electromotor, reducing device, gear and rack or mechanism of connecting rod etc., but this mechanism is complexity. Therefore it- is important parting of greenhouse intelligence synthesize adjusting control system, to develop and perfect the greenhouse intelligence control system of opening and closing ventilation-windows, which can auto control the ventilation-windows opening and closing, its opening and closing area, and the controlled natural ventilation.With the continuous improvement of the needs for food security, green vegetable, protect environment and sustainable development, adopting clean source of power, clean transmission medium and new type transmission mechanism to developing the intelligent control pneumatic mechanism for the operation of opening and closing ventilation-windows has distinctness advantages, which can economize energy, protect environment and have highly price performance ratio. These belong to advancing research fields and made innovation in this subject at domestic and abroad.The item of "the system of intelligent pneumatic operation of ventilation-windows for the dynamic regulate and control of temperature in a natural ventilation greenhouse", introduced the pneumatic technique; the intelligent control and signal detecting system thatadopted auto control technique was developed; the dynamic temperature control model of natural ventilation condition was found and its experimentation, simulation and appraise were finished; the pneumatic operations of roof and side ventilation-windows were designed, experimented and simulated; the model of control system and its software were developed. The pneumatic operations system of ventilation-windows could auto control its opening and closing, regulate the extent of opening, and achieve the dynamic control of temperature in greenhouse according it's scheduled precision. The specific contents were as follows:(1) This main work of the project was the East-china type multi-span plastic greenhouse. Using energy and mass balance theory, applying hydromechanics theory, the dynamic temperature control model of natural ventilation was set up, which has relations with multifactor such as climate out of greenhouse, greenhouse's geographical position and structure, the time and so on. According this, the intelligent pneumatic operation system of ventilation-windows was designed; the temperature in greenhouse was controlled or forecasted by the opening of ventilation-windows; and the optimum opening position of ventilation-windows was decided. The experiment and analysis showed the greenhouse temperature forecasted by the model had good agreement with the temperat...
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