基于DSP的数字电视收视率调查系统

发布时间：2018-03-22 06:18

本文选题：数字电视　切入点：DSP　出处：《湖南大学》2009年硕士论文　论文类型：学位论文

【摘要】：电视收视率是深入分析电视市场的科学基础,是节目评估的主要指标,是媒介计划的制定与评估、提高广告投放效益的有力工具。本文在分析传统电视收视率缺陷和不足基础上,致力于数字电视收视率调查研制工作,开发出一种基于DSP的数字电视收视率调查系统。 (1)通过分析数字电视收视率的研究现状和发展趋势,指出了传统电视收视率调查功能的数据不精确性和延时性,阐述了基于DSP的数字电视收视率调查系统在数字电视收视率调查中应用的优势。并在此基础上研究了DSP系统频谱变换的技术基础——滤波器、FFT运算和频谱比较等。 (2)根据项目的功能要求,提出了基于DSP的数字电视收视率调查系统的总体方案。设计实现了系统DSP模块、单片机控制模块、液晶显示模块、DS1302计时电路模块等硬件电路。详细阐述了系统各模块电路的组成原理和实现方法,给出了整个电路系统的原理图。 (3)阐述了软件的总体设计思想,结合硬件电路,设计实现系统的底层程序,详细论述了DSP系统通信程序,单片机控制LCD进行液晶显示程序和单片机控制DS1302计时程序,并给出了系统的软件设计流程及代码实现。 (4)采用三知的DSP系统开发实验平台结合DSP开发软件CCS,验证了DSP系统的和单片机系统之间的通信。采用伟纳电子的ME300B单片机开发实验平台结合单片机开发软件KeilC,验证了单片机系统的液晶显示功能和计时功能。测试结果表明,所设计的系统实现了DSP模块和单片机控制模块间的通信、单片机控制模块的液晶显示和硬件计时功能,同时设计充分考虑了系统功能扩展、升级的可能性,可方便地在其基础上进行进一步开发。
[Abstract]:Television ratings are the scientific basis for in-depth analysis of the television market, the main indicators for program evaluation, and the formulation and evaluation of media plans. On the basis of analyzing the defects and shortcomings of traditional TV ratings, this paper devotes to the investigation and development of digital TV ratings, and develops a digital TV rating investigation system based on DSP. 1) by analyzing the present situation and development trend of the digital TV ratings, the paper points out the data inaccuracy and delay of the traditional TV rating survey function. This paper expounds the advantages of the digital TV rating survey system based on DSP in the investigation of the digital TV ratings, and then studies the technical foundation of the spectrum transformation of the DSP system-FFT operation and spectrum comparison, etc. According to the functional requirements of the project, the overall scheme of the digital TV rating investigation system based on DSP is put forward. The system DSP module and the MCU control module are designed and implemented. The hardware circuit of liquid crystal display module such as DS1302 timing circuit module is described in detail, the principle and realization method of each module circuit of the system are described in detail, and the schematic diagram of the whole circuit system is given. This paper expounds the general design idea of the software, designs and implements the bottom program of the system combining with the hardware circuit, discusses in detail the communication program of the DSP system, the MCU controls the LCD to carry on the liquid crystal display program and the single-chip microcomputer controls the DS1302 timing program. The software design flow and code implementation of the system are also given. The communication between DSP system and single-chip computer system is verified by using the three-knowledge DSP system development experiment platform and DSP development software. The ME300B single-chip microcomputer development experiment platform with Weiner electron is used to develop the experiment platform combined with the single-chip computer development software KeilC. The liquid crystal display function and timing function of single-chip computer system are proved. The test results show that the system realizes the communication between the DSP module and the MCU control module, and the LCD display and hardware timing function of the MCU control module. At the same time, the possibility of the expansion and upgrade of the system function is fully considered in the design. It is convenient for further development on its basis.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2009
【分类号】：TN949.197

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