作物生長(zhǎng)需要一個(gè)適宜的環(huán)境，在可控環(huán)境下，可以不分季節(jié)、不分地區(qū)地種植所需的作物。控制系統(tǒng)為實(shí)現(xiàn)這一目標(biāo)提供了基礎(chǔ)。控制系統(tǒng)設(shè)計(jì)采用主從模式，基于RS-485 總線協(xié)議，設(shè)計(jì)全數(shù)字化傳感器和測(cè)控輸入輸出模塊；采用COM 組件技術(shù)設(shè)計(jì)應(yīng)用軟件的數(shù)據(jù)采集、控制算法和控制輸出組件。整個(gè)系統(tǒng)經(jīng)過(guò)測(cè)試和運(yùn)行，證明滿足可控環(huán)境調(diào)控要求。
關(guān)鍵詞：現(xiàn)場(chǎng)總線，分布式系統(tǒng)，COM 組件，可控環(huán)境，智能節(jié)點(diǎn)

Abstract: The crop growth requires a favorable environment. Crops can be grown at different districts, and different seasons in controlled environments. In order to realize this goal, a new control system based on RS-485 bus is designed in the light of the master/slave mode. The design method of intelligent sensors and I/O modules is given, and the program methodology using COM component techniques is described in developing application software with data collection, control algorithm and control output modules. The system passes testing and the
operation shows designed control system can be true of controlled environments.
Key words: field bus , distributed system, COM component, controlled environment, intelligent node