基于PLC的测长称重机

作者：冯新文1,杨林1,王红霞2 日期：2008-02-25/span> 浏览：3291 查看PDF文档

基于PLC的测长称重机

冯新文1,杨林1,王红霞2
（1.沈阳工业大学 机械工程学院,辽宁 沈阳 110023; 2.青海油田机械厂,甘肃 敦煌 736200）

摘要：测长称重机用于钢管自动生产上，主要负责采集管体长度和重量数据并发送到计算机上。基于此，设计了基于PLC控制的测长称重机。该设备采用伺服系统和带有重量变送器的称重传感器，实现了长度和重量测量，提高了测量精度和系统稳定性。并通过接口转换器将RS232串口转换成RS485串口，实现了PLC与计算机、计算机与外围设备之间的通信，使数据传输更加稳定，提高了系统的可靠性。
关键词：可编程序逻辑控制器；伺服系统；称重传感器；RS485总线
中图分类号：TP274;TF325.3文献标识码：A文章编号：1001-4551(2008)02-0025-03

Measuring and weighing machine based on PLC
FENG Xinwen1, YANG Lin1, WANG Hongxia2
（1.College of Mechanical Engineering, Shenyang University of Technology, Shenyang 110023, China;
2.The Machine Manufacturing Factory of Qinghai oilfield, Dunhuang 736200, China)
Abstract: The measuring and weighing machine is used in the productionline of steel pipe for acquiring the length and weight data and sending the data to the computer. The measuring and weighing machine based on programmable logic control (PLC) was designed. The measurement of length and the weight was realized, using the servo system and the weight sensor with weight transducer. In this way, the measurement accuracy and the system stability were improved. The system communication between the PLC, computer and peripheral device was implemented through the RS485 net which was converted from RS232 by the interface converter, the system reliability can be improved.
Key words: programmable logic control (PLC); servo system; weight sensor; RS485 bus
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