The Design of Remote Automating Control System of Energy Saving Lamps Life Test

介绍了节能灯寿命实验远程控制系统的构成、性能、特点,分析了系统的软件和硬件的实现方法。The article introducd the composition and characteristics of life-test remote automating control system of an energy saving lamps, and described the implementation of the software and hardware of the system

Design of the UPS Remote Supervision System Based on SMS

介绍利用现有的GSM(全球移动通信系统)网络资源,应用移动通信中SMS(短消息业务)来传输数据,采用微控制器,设计一个基于SMS通信的UPS(不间断电源)远程监控系统。该系统已投入使用,监控中心能够随时查询UPS的状态信息,出现故障时远程监控点能够正常报警。介绍了该系统的组成原理和实现功能、监控中心的软硬件工作原理以及远程监控点的软硬件工作原理。Using existing GSM network resource,data transmission method of SMS in mobile communication business and the microcontroller,a UPS remote supervision system based on SMS communication is designed.The System has already been used.The supervision centre can get the needed data at any time and the remote supervision unit will send the messages to the staff when the UPS is abnormal.In this paper, we introduce the principle and function of the system first,then the software and hardware principle of the supervision center and supervision unit in detail.国家自然科学基金资助项目(60672046

The Design of Mobile Digital TV Set-top Boxes

目前,有线电视早已普及,而移动数字电视还处于发展阶段.为此,本文设计了一种DMB-TH地面数字电视机顶盒,即移动数字电视机顶盒.首先,介绍了硬件设计方案,其中主芯片采用ST公司出品的STM5105,该芯片具有主频高、反应速度快等优点.其次,详细介绍了红外接收模块、OSD模块、频道搜索模块和解复用模块等模块的软件设计.由于采用了快速检测频道搜索的反馈信号、短时间内强制退出搜索子系统等创新技术,使频道搜索速度和频道切换速度大为提高.该机顶盒能够成功地播放广电发送的地面数字电视.Nowadays,the cable TV is already universal,but mobile digital TV is still in the development stage.In this paper,DMB-TH terrestrial digital TV set-top boxes are studied.Firstly,this paper introduces the hardware design module.The main chip is STM5105 which is produced by ST.It has high frequency and reaction speed.Secondly,this paper introduces the software design which includes infrared receiving module,OSD module,channel searching module,demultiplexing module and so on.Using the innovative technique such as the rapid detection of the feedback signals sent by the channel searching module and mandatory rapid exit from the channel searching module,the channel searching speed and the channel switching speed are greatly improved.As a result,the set-top boxes designed in the paper can be successfully used to broadcast the terrestrial digital broadcast television.国家自然科学基金(60672046)资

Design of the Remote Control Aging Testing System of Energy Saving Lamps

介绍一种采用控制管理软件来实现计算机智能化远程控制的节能灯检测系统的设计.利用 PC机、单片机和传感器控制电路,通过RS 485总线远程控制老化实验室内的节能灯老化检测实验灯盘,实现按各种测试标准模式进行节能灯老化实验,同时对实验检测的所有数据和事件自动进行检测、传输、处理,并存储在数据库中,自动形成各种报表和实验数据的统计分析报告,提高老化实验的精确度和管理自动化.讨论了系统的构成、性能特点,详细分析了系统的软件和硬件的设计和实现方法.The article discusses the design of the remote control aging testing system of energy-saving lamps.The system based on the control and managed software makes use of the computer,SCM and sensor control circuit to control remotely the experiment lamp plates in the other labs with RS-485 and control the experimental process in terms of all kinds of test standards.The system also automatically tests,transmits,processes and stores all kinds of data and accidents which occur in the experimental process.The system can create various report forms which are based on all kinds of data analyses.The system can provide many decision-making after having analysed the data and increases the experimental definition and managing automatization.It discusses the implements of the software and hardware of the system,analyses the design and carrying out of the software and hardware of the system

Design of Digital Tuning System of Vehicle Sound Equipment

介绍了车载音响中数字调谐系统的设计,概述了PLL(锁相环)频率合成的原理,给出了利用凌阳单片机实现车载音响数字调谐功能的方法,阐述了数字调谐中低通滤波电路的设计原则和自动搜索功能的实现流程。In this paper, a design of digital tuning system of vehicle sound equipment is introduced. After introducing principle of PLL frequency synthesizer, the method of using Lingyang MCU to realize digital tuning is introduced. The design principle of the lowpass filter circuit is discussed, and also, the flow chart of auto-searching is presented

The Simulation Study of the Cooperative Diversity Based on ofDM Modulation

协作分集在无线通信中应用极其广泛,正交频分复用技术(OfdM)鉴于自身优势,在系统的频谱利用率、功率利用率、系统复杂性等方面具有很强的竞争力.首先介绍了协作分集中的两种协作方式与OfdM系统框架,对比分析了解码转发与放大转发在实现各自转发上所具有的优缺点;对比分析了CrC编码OfdM系统与卷积码编码OfdM系统仿真性能,决定采用卷积码实现OfdM协作分集中解码转发法(dECOdE And fOrWArd,dAf)的编解码,并对OfdM协作分集的两种协作方式进行了系统仿真.仿真结果表明,加入协作分集的OfdM系统,获得了显著的分集增益,系统性能得到提高.Cooperative diversity is widely used in wireless communication.On the other hand,orthogonal frequency division multiplexing(ofDM) is highly competitive due to its advantages in systematic spectral efficiency,power utilization and the systematic complexity.In this paper,two methods to realize cooperative diversity in ofDM systems and the frame of the ofDM are proposed;compared the CRC coding ofDM system with the convolutional coding ofDM system,and analyzed the performance of the CRC coding ofDM system and convolutional coding ofDM system,we decide to adopt the convolutional codes to achieve the DAF of the cooperative diversity.Two cooperative protocols in ofDM cooperative diversity system are simulated.As is showed in the simulation results,the performance of the ofDM system with the cooperative diversity accesses to a significant diversity gain.国家自然科学基金资助项目(60672046);福建省青年创新基金资助项目(2009J05155);厦门市科技计划项目(3502Z20093008);厦门大学“985”二期信息创新平台项