Design an Intelligent Environment Control System for GreenHouse Based on RS485 Bus

Abstract

As control equipments used in industry can hardly be transplanted to greenhouse environment control directly and the greenhouse control systems designed in the past are not that adaptable in practice, a new greenhouse control system based on RS485 bus is realized in this paper. When the system is running normally, the control targets are fulfilled by smart modules distributed in every greenhouse, while data collecting, state monitoring and remote login are accomplished by upper PC. If manual control is needed, auto-control will be isolated in two levels, which ensures the greenhouses can be controlled if system malfunction or extreme climate happens.

The Solving of Bias Resistor and Its Effect on the RS485 Fieldbus

“…In paper [5], the RS485 bus was used to monitor the distributed navigation light fault, on the other hand, it is used to control the modules in the integrated with a small-sized strap-down inertial navigation system (INS) [6]. Besides that, RS485 fieldbus is also used in Environmental monitoring field [7][8] and instrument and meter [9].…”