Automatic Adjustment and Remote Control of Agricultural Greenhouse

• Main Authors: CHEN,JIAN-CHENG, 陳建成
• Other Authors: MI,CHE-MIN
• Format: Others
• Language: zh-TW
• Published: 100
• Online Access: http://ndltd.ncl.edu.tw/handle/56206994753416050298

碩士 === 南台科技大學 === 電機工程系 === 99 === Automatic adjustment and remote control of agricultural greenhouse are focusing on the use of a wide range of digital technology, through a variety of sensors to detect and control the greenhouse environment parameters. The purpose is to use the existing control technologies and network protocol, effectively manage and integrate the related digital equipment and devices. With the ever-changing technology, this paper attempts to use Mitsubishi Q series PLC combined with open field network CC-Link as research basis for human machine interface and programming languages VB to provide a shared technology platform for the graphic monitoring technology of PLC. Automatic adjustment of agricultural greenhouse provides a shared technology platform to detect the signal and image and execute local or remote control depending on the actual situation through Internet. This study uses closed loop PID temperature control, through specific A/D conversion or MODBUS communication module to get necessary data from temperature controller. The Temperature control can be achieved by PLC programming and tuning of PID parameters. In general, as regards to software of PLC programs or human machine interface, data processing or the establishment of the database is more inconvenient. This study use software package of MX Sheet and programming language VB to dynamic link the application software such as Excel, Access etc. to construct a complete set of automatic adjustment and remote control of agricultural greenhouses.