基于PROFIBUS总线的工业质谱仪电流变送系统  

PROFIBUS-based Current Transmitting System for Industrial Mass Spectrometer

作　　者：严奉轩[1] 陆平[1] 陈宁[1] 凌大鹏[1] 赵加鹏[1] 

机构地区：[1]中国船舶重工集团公司第七一八研究所,河北邯郸056027

出　　处：《仪表技术与传感器》2014年第8期27-29,共3页Instrument Technique and Sensor

摘　　要：为实现工业质谱仪测量结果的多路4～20 mA电流信号输出,设计了一套基于PROFIBUS总线的电流变送系统.系统中使用配制为DP从站的可编程控制器（PLC）,用数字I/O口模拟SPI通信接口与数/模转换芯片（DAC）进行通信,实现了多路电流变送功能.实践证明：该系统能实现预计功能,并具有良好的扩展性,市场前景广阔.A PROFIBUS-based current transmitting system was introduced to deliver measuring resuhs of an industrial mass spectrometer via muhi-4 - 20 mA signals. A programmable logic controller （PLC） , which was configured as a DP slave, was used to communicate with a digital/analog convertor （DAC） via PLC＇ s digital I/O ports in simulated SPI pattern, and multiple current signals transmitting was achieved. Practice had been proved that the system fulfilled the design goal, and had excellent expansibili- ty. Also a good market and economic future is expected.

关 键 词：质谱仪 PROFIBUS MAX5742 PLC 4~20 MA 现场总线 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]