基于PLC的传感测速应用设计  

Design of System of Sensing Velocity Measuring based on PLC

作　　者：程民利[1] 

机构地区：[1]西安铁路职业技术学院电子信息系,陕西西安710014

出　　处：《新技术新工艺》2015年第5期26-29,共4页New Technology & New Process

基　　金：陕西省教育厅2013年科学研究计划(自然科学专项)资助项目(2013JK0964)

摘　　要：结合专业教学需求,基于现有PLC型号设计了传感测速系统,并且分析了3种测速方法,设计出测速系统的组成图以及硬件检测和显示电路,依据测速方法编写了对应于3种不同测速方法的梯形图程序。针对不同的测速程序,定性分析了对应测速误差产生的原因,并提出了针对性的改善措施。该系统采用软硬件结合的方式实现测速,可通过设置程序中的参数来改变测速精度。Combining with the teaching requirements, This paper designed a sensing velocity measuring system based on existing models of PLC, analyzed the three velocimetry, and designed a composition diagram of velocity-easuring system, hardware detection and display circuit. According to velocimetry, ladder diagram program of the three different speed meas uring method was woritten. Aimed at the different speed program, the reasons of the velocity error were analyzed, corresponding improvement measures were put forward. A software and hardware implementation of velocity-measuring could change the velocity-measuring precision by setting the parameters in the program.

关 键 词：测速方法 传感器 定时器 计数器 梯形图程序 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]