基于嵌入式系统的半导体激光器驱动设计

发布时间：2018-05-14 15:59

本文选题：半导体激光器 + 安卓(Android)　；参考：《南京大学》2013年硕士论文

【摘要】：半导体激光器具有体积小、重量轻、效率高以及成本低廉等优点,在工业生产和科学研究领域具有广阔的应用前景。然而传统的半导体激光器驱动存在电路结构复杂、功能简单、控制精度较低且控制方式单一等缺陷,限制了半导体激光器应用领域的进一步扩展。本论文在参考现有半导体激光器驱动设计的基础上,针对这些设计的缺陷,提出了一种基于嵌入式系统的半导体激光器驱动实现方案。在该方案中,整个驱动电路被划分为上层嵌入式控制系统与底层驱动系统两个部分。其中上层嵌入式控制系统以S3C6410处理器为核心,搭载安卓操作系统管理整个驱动电路的运行,实时监测和显示半导体激光器的工作状态。基于可扩展标记语言设计了实用的GUI界面,为用户提供丰富的控制和数据显示模式。底层驱动系统则以单片机为协处理器,对各个外设驱动模块进行控制。使用压控恒流模块WLD3343和温度控制模块WTC3243优化系统电路结构,配合高精度的ADC和DAC电路显著提高了系统对半导体激光器驱动电流和工作温度的控制精度。由软件实现的延时上电、温度报警和驱动电流限制等功能与各种硬件保护电路协同工作,最大程度上保证激光器的运行安全。软硬件两个方面的测试结果显示,本文所提出的半导体激光器驱动运行良好,无论是在控制精度还是在长期工作稳定性方面都有较好的表现,能够精确、快速、稳定地控制半导体激光器的工作过程,保证激光器的安全,完全达到了预期的设计目标。同时该驱动设计可以为用户提供便捷的设置方式和丰富的数据监测、记录功能,特别适合各种现场环境下的实际应用。
[Abstract]:Semiconductor lasers have many advantages, such as small size, light weight, high efficiency and low cost. However, the traditional semiconductor laser drive has the disadvantages of complex circuit structure, simple function, low control precision and single control mode, which limits the further expansion of semiconductor laser applications. In this paper, a scheme of semiconductor laser driver based on embedded system is proposed, which is based on the existing semiconductor laser driver design. In this scheme, the whole drive circuit is divided into two parts: the upper embedded control system and the bottom drive system. The upper embedded control system uses S3C6410 processor as the core, runs on the Android operating system to manage the operation of the whole driving circuit, and monitors and displays the working state of the semiconductor laser in real time. A practical GUI interface based on extensible markup language is designed to provide users with rich control and data display modes. The bottom drive system uses single chip microcomputer as coprocessor to control each peripheral driving module. The circuit structure of the system is optimized by using the voltage control constant current module (WLD3343) and the temperature control module (WTC3243). The high precision ADC and DAC circuits are used to improve the control accuracy of the system to the driving current and working temperature of the semiconductor laser. The functions of delay power up, temperature alarm and driving current limitation realized by software work in cooperation with various hardware protection circuits to ensure the safety of laser operation to the greatest extent. The test results of hardware and software show that the semiconductor laser drive proposed in this paper works well, and has good performance in both the control accuracy and the long-term working stability, and can be accurate and fast. The work process of semiconductor laser is controlled stably and the safety of laser is guaranteed. At the same time, the driver design can provide users with convenient setting mode, rich data monitoring and recording functions, especially suitable for practical applications in various field environments.
【学位授予单位】：南京大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TN248;TP368.1

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