基于LabVIEW和CAN总线的吸收式制冷机组数据监控系统

摘要

Absorbing refrigeration system will be an important direction of refrigeration technology. The absorbing refrigeration system has the features of long pipelines,complex equipments, numerous and dispersed monitoring points, this paper designs one distributed data acquisition and control system based on LabVIEW and CAN bus. By using CAN bus technology, CAN node is developed with analog data acquisition and control in this system. The system realizes data acquisition and control with the software of LabVIEW to dispose the data collected, which achieves real-time monitoring of the system. The control system composed by CAN bus technology is completely decentralized and simple in structure, stable in work, it makes real-time communication and monitoring between signal nodes come true.%吸收式制冷系统将是制冷技术的重要发展方向。针对吸收式制冷系统管线长、设备复杂、监控点多、监控点分散的特点，设计了一种基于LabVIEW和CAN总线的分散式参数采集和控制系统。该系统采用CAN总线技术，开发了具有模拟量采集和控制的 CAN 节点，实现了对吸收式制冷系统的数据采集和参数控制，并利用上位机LabVIEW软件对采集到的数据进行运算处理，实现对系统运行状态的实时监控。采用CAN总线技术组成的控制系统，实现了控制系统的彻底分散，使系统结构简单、工作稳定，能实现多节点信号的实时通信与监控。