摘要液位是工业领域的比较重要的测量参数之一。液位的测量广泛应用到工业、医学、天文、军事乃至日常生活等诸多领域。 针对针剂及口服药液的装量检测， 目前，国内制药企业普遍还采用人工检测的方法，检测人员劳动强度大、易疲劳。因此针剂及口服药液装量的光电检测方法研究有着重要的意义和应用前景。本文提出了用CCD成像的方法来对静态的和传动过程中的安瓿瓶的液位进行检测。68220

本文首先介绍了CCD光学成像系统的设计以及检测系统的软硬件设计，通过Lab VIEW编程实现了数据的自动采集与处理和实验结果的自动判别与输出。然后就安瓿瓶静态和动态两种情况进行了液位的检测实验，初步实验结果符合预期。针对安瓿瓶容量及所装液光学性质的不同，对检测实验方案进行了改进与优化。最后对外界环境对信号采集的干扰进行了分析和解决，提高检测的精度和效率。

毕业论文关键词  液位 线阵CCD 传动 噪声

毕业设计说明书（论文）外文摘要

Title    Research on a Photoelectric Detecting Method for the Filling Quantity of Injection and Oral Liquid                      

Abstract

Liquid level is one of the most important measured parameters in the industrial circle. Liquid level measurement is widely used in industry, medicine, astronomy, military and even daily lives. In terms of the detection of the filling quantity, domestic pharmaceutical enterprises generally adopt the method of manual measurement at present. Testing personnel face the problem of high labor intensity and easy fatigue.  Therefore it is of great importance that we do research on a photoelectric detecting method for the filling quantity of injection and oral liquid. The article has presented a solution to detect the liquid level of static ampoule bottles and those in the process of transmission by using CCD imaging devices. Firstly, the article introduces both the software and hardware design of the detecting system as well as the CCD imaging system. It realizes the automatic acquisition and processing of data and automatic identification and output of experimental results. Afterwards, we do research on the liquid level both in the static and the dynamic state, and then we optimize the experimental scheme according to the different conditions of ampoule bottles. Lastly, we analyze and solve the problem that external environment has an effect on the signal collection to improve the accuracy and efficiency.

Keywords  liquid level   linear array CCD  transmit  noise

目   录

1   绪论  1

1.1 液位测量的主要方法 1

1.2 针剂及口服药液装量的主要检测方法 2

1.3 本课题的提出与本文的主要研究内容 3

2   基于线阵CCD的液位光电检测系统光学结构的设计 4

2.1  基于线阵CCD的液位光电检测系统概述 4

2.2  光源的选择 4

2.3  检测光路的设计 6

3  基于线阵CCD的液位光电检测系统的硬件与软件设计 8

3.1  系统的硬件设计 8

3.1.1  CCD工作原理简介  8

3.1.2  线阵CCD驱动电路的设计 10

3.1.3  A/D采集卡的选择 12

3.2  系统的软件设计13

4  基于线阵CCD的液位光电检测系统的可行性分析  15

4.1  静态液位检测的研究15

4.2  动态液位检测的研究16

4.3  液位测量系统噪音的来源与抑制措施  17