Research And Development Of Remote Communication Interface For Greenhouse Data Acquisition System

With the intensive and scale development of modern greenhouses and the advancement of their intelligent management, present-day greenhouse technology is witnessing a trend of integration of greenhouse production and its management through remote communication. The development of modern sensor technology, communication technology, automation technique and computer technique add fuel to the fire for this trend. The remote communication interface for greenhouse data acquisition system is designed and discussed in this paper as the research focus.The first chapter discusses the application of Distributed Control System and Field Control System in the field of greenhouse monitoring and control, and analyzes their respective advantages and disadvantages. In light of latest progresses in Ethernet technology in industrial sector, the paper has set up as its goal the study of greenhouse monitoring and controlling system based on the application of Ethernet technology.In the second chapter, Many designs of the remote communication interface for greenhouse data acquisition system is compared, and a hardware design by integrating an ordinary 8 bit MCU and a Ethernet controller chip is described in detail, for the purpose of connecting the top networking of information.In the third chapter, the design of Ethernet control chip driver is discussed and TCP/IP protocols are tailored as an embedded application in view of the limited resource of MCU system. Problems with this system is also analyzed, a solution with refitting protocols is proposed as well.In the fourth chapter, a remote monitor platform based on web is implemented by Java network programing language, which replaces the host computer software in traditional Distributed Control System and avoids the isolation of bottom control networking from top information networking. A preliminary design for such seamless integration is also discussed..In the fifth chapter, a simulation on greenhouse data acquisition system is designed with Labview platform as a virtual instrument technique to the advantage of efficient debugging and examination in the development process of remote communication interface, which significantly quickens the debugging and development of the system.The last chapter summarizes the paper, and discusses the application prospect of this interface.