PLC毕业设计完整版-能穿透钢介质的涡流传感器.doc

唐山学院
毕业设计
设计题目:能穿透钢介质的涡流传感器

系别: 信息工程系
班级:
姓名:
指导教师:
2011年6月4日
能穿透钢介质的涡流传感器
摘要
磁感应涡流传感器广泛应用在爬车上技术上,主要用途是准确定位,迅速停止前进并且报警。
涡流传感器是一种非接触式的线性化测量工具。具有长期工作可靠性好、测量范围宽、灵敏度高、分辨率高、响应速度快、抗干扰力强、不受油污等介质的影响等优点广泛应用于电力、石油、化工、冶金等行业和一些科研单位。尤其在石油管道运输方面有重要意义。
可编程控制器,简称PLC(Programmable logic Controller),是一种专门为在工业环境下应用而设计的数字运算操作的电子装置。它采用可以编制程序的存储器,在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作指令。
本设计《能穿透钢介质的涡流传感器》是利用通过PLC产生一个脉宽和频率可调的波形经磁感应线圈产生磁场,通过调节脉宽和频率来改变磁场穿透钢介质的能力。利用磁场接收装置整流滤波和稳压得到信号实现对在不同管道里爬行车的的定位。
关键词:磁感应可编程控制器定位
Can rate the eddy current transducer steel medium
Abstract
Widely used in ic eddy current transducer technology, climb on main purpose is to stop quickly, accurately orientation and alarm.
Eddy current transducer is a non-contact measuring tools linearization. Work with long-term good reliability and wide measuring range, high sensitivity, high resolution, and response speed and strong anti-jamming ability, not greasy, and other media influence etc widely used in electric power, petroleum, chemical industry, metallurgy, etc, and some scientific research units. Especially in the oil pipeline transport has important significance.
PLC Programmable logic, referred to as PLC Controller is a specialized in industrial application and design under the environment of puting operations of the electronic device. It adopts the program can be stored in its memory, the internal logic operation sequence execution timing, operations, and arithmetic operation instruction.
The design of the steel medium can rate the eddy current transducer is produced by PLC using a pulse width frequency adjustable ic induction coils of frequency, pulse width to change the ic steel medium through. Using ic receivers rectifier voltage signal of filter and to climb in different pipeline of driving.
Keywords: induction programmable controller positioning.
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