液位光纤检测系统设计.pdfVIP

摘 要 实现易燃易爆液体液位的测量,对现代测量技术的发展很重要。本文设计一种 利用浮子式光纤传感器与单片机组成的液位测量系统,它利用传统磁浮子液位测量 与光纤传感器的结合实现对液位的测量,并同时可以增大测量的安全性。文中详细 论述了液位检测、电路处理的原理,给出了整体电路设计框图和软件流程。 系统主要由光源、液位检测装置、光纤传感器(探头) 和信号处理部分(二次仪 表) 组成。采用光纤传感器采集液位高度变换信号,经光电转换放大后,实现单片机 将数据处理显示,这种系统特别适用于易燃易爆油田领域的液位检测。 关键词：浮子测量， 光纤传感器， 光码盘， 单片机 I Abstract Measurement to the liquid level of the inflammable and explode liquid, is an important of the development of modern measurement technology. In this paper, the design of level measurement system with the use of Fiber-optic sensors Float Level and a single chip microcontroller. Sensing technologies of advanced optical fiber and principle of traditional power balance are adopted in the optical fiber liquid-level Meter and can increase the security of measurement at the same time. Discussed in detail level detection, handling the circuit theory, given the overall circuit diagram and software design process.System is mainly composed of light, liquid level detection devices, optical sensors (the probe) and signal processing of the (secondary instrument). Level using fiber optic sensor acquisition signals a high degree of transformation, After the photoelectric conversion to enlarge, SCM will achieve data processing display, System is particularly applicable to oil fields of flammable and explosive detection level. Key words ：float measurement, optical Fiber Sensor ,the light code dish,single chip microcomputer. - Ⅱ - 目 录 第一章 前言 1 1.1 选题背景 1 1.2 研究意义 1 1.3 浅谈光纤传感器技术的发展 2 1.4 目前国内外液位检测技术发展概况 4 1.5 本设计研究的基本内容 6 第二章 总体设计方案7 2.1 系统总体结构框图 7 2.2 系统工作原理 7 第三章 液位传感系统的设计 9 3.1 储罐液位检测技术 9 3.1.1 接触式测量