System Monitoring and Control for Cluster of Climate Chambers
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摘要: 使用触摸屏、可编程控制器（PLC）、树莓派微型计算机、组态王、集散控制系统（SCADA）、高清摄像头、影像存证服务以及传感器、执行机构开发了一个人工气候室群智能化测控系统，管理由30个单元组成的人工气候室群。本系统中触摸屏负责采集各单元的环境状态数据，提供人工气候室单元的人机交互界面；PLC完成温室单元的控制逻辑，控制温室加湿、除湿、补光、气调等装置；树莓派微型计算机运行多个定制软件，实现计划库管理、权限分配、协议转换服务、空调控制等功能；组态王运行在管理房微机上，用于人工气候室群的本地管理、配置和数据记录；远程管理依托于基于ClearSCADA构建的设施农业总控中心，实现远程管理、数据采集、存储和配置；各模块间通过网络连接，采用ModbusTCP协议；配套的高清摄像头和影像存证服务提供了内部场景的实时查看和图片记录功能。该系统有效实现了人工气候室群的环境状态采集、环境控制、运行计划管理、远程测控、照片存证等功能，扩展性强，运行稳定。Abstract: Amonitoring and control system was developed for the operation of a cluster of 30 climate chambers. The system employed touch screens, a programmable logic controller (PLC), a Raspberry Pie microcomputer, Kingview software, an SCADA distributed control system, HD cameras, animage recording system, sensors, and actuators. The touch screen devicescollected environmental real-time data from each chamberfor man-machine interface operations. PLC controlled the humidity and other environmental conditions in the chambers according to the pre-determined criteria for a planned test.Customized software installed on the Raspberry Pie microcomputer ran managementplan, executed authority assignment, served protocol conversion, and controlled environmental conditions for each individual chamber. Kingview covered local management, configuration, and data recording. Data acquisition, storage and configuration wereremotely managed by a master control center built with Clear SCADA. TheModbusTCP protocolconnected all modules via the TCP network. High definition cameras installed at strategic locations captured images providing real-timedisplay and record-keeping functions. Thus, an entire cluster of climate chambers could be reliably and simultaneously monitored and controlled with ease for conducting experimentations.
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Key words:
- climate chamber cluster /
- control system /
- remote control
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图 2 人工气候室测控系统硬件组成结构
Figure 2. Schematic diagram of control systemfor a cluster of climate chambers
图 3 人工气候室测控系统软件模块与数据流
Figure 3. Software and data links of control system for a cluster of climate chambers
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