基于仪表通讯的流量计卡控系统  

The Design of Flowmeter Card Control System Based on Instrument Communication

作　　者：潘浩 

机构地区：[1]中国石油大学信息与控制工程学院,山东青岛266580

出　　处：《自动化技术与应用》2013年第9期39-42,共4页Techniques of Automation and Applications

摘　　要：根据流量计费系统的升级需求,提出了采用PIC24FJ64GA108单片机和原有流量计通讯,通过射频卡进行扣费和充值管理的方案,着重介绍了IC卡读写、阀门控制、液晶等硬件构成和软件设计流程。用LDB电磁流量计进行测试,系统能正确采集流量及扣费,同时将余额、流量等数据通过MODBUS RTU协议传输到上位机中,系统运行可靠,值得推广。According to the flow measure system upgrade requirements, a RF card control scheme based on the microprocessor PIC24FJ64GA108 is introduced in the paper. It is focused on the hardware composition of IC card, valve control, LCD modules and software design process. Finally LDB electromagnetic flowmeter is connected to the system, it shows that the system can read flow, complete deduction and transfer the balance and flow to upper computer by Modbus RTU protocol. It runs reliably and is worth promoting.

关 键 词：射频卡 RS485通讯协议 PIC24FJ64GA单片机 MODBUS RTU 

分 类 号：TP216.2[自动化与计算机技术—检测技术与自动化装置]