和电路

Most of Chinese GPR have not as good performances as ones abroad. In the paper, the GPR system developed by us employs several optimization techniques to enhance the system performances, including antenna, sampling-hold circuit, orientation wheel, function of system software, multithreading, and signal processing algorithms. As the result the system works more well with these techniques, and its azimuth and distance resolution of 10 cm has been achieved with detection depth of more than 50 cm.

本文根据探地雷达系统工作原理，在电子科技大学探地雷达系统样机研制的基础上采用了各种有效的优化技术，包括探测前端、采样保持电路的优化，定位轮、目标定位、多线程技术的应用，数据采集处理和控制软件功能的拓展、各种有效的信号预处理算法的应用等，显著提高了系统的探测性能和增强了探测效果，使得系统方位、距离分辨率均达到了10cm，探测深度大于50cm，其性能指标达到国外先进水平，为进一步的实用化奠定了重要的基础。

Secodely , introduces the FPGA implementation of the DVB-T coder and modulator , some of the core arithmetic , such as , inner coding , inner-interleaving ( bit-wise / symbol interleaver ), signal constellations and mapping , OFDM frame structure are detailed .

然后，详细描述了DVB-T信道编码调制器中的部分核心算法的FPGA电路设计、调试和实现，包括内编码、内交织(包括比特交织和符号交织)、星座映射、帧形成等。

The method is to draw incident power and reflection power of radar system through directional coupler and bridge circuit,and carries out pretreatment for gathered data with micro control unit,then calculates standing wave ratio.

文中提出一种驻波比在线测试方法，该方法通过定向耦合器和电桥电路将雷达系统的入射功率和反射功率提取出来，然后用单片机对所采集到的数据进行预处理，从而计算出驻波比。

This paper presents a technology for ZJ19A cigarette maker's reconstruction. According to the analysis of the weight control system for ZJ19A cigarette maker, a weight controller is designed based on DSP TM5320LF2407A. The method of designing motion controller based on DSP and peripheral equipment are introduced. Furthermore, the transplanting of μC/OS-Ⅱ real time embedded operating system to the system and the creating of tasks are explained at the end. The design actualizes digitalization and miniaturization.

介绍了ZJ19E机组电控系统升级改造中，重量控制系统的设计技术；对ZJ19E机组重量控制系统的工作原理进行了分析，设计出一种基于DSP的重量控制器，给出了重量控制器的设计需要满足的要求，详细介绍了DSP芯片TMS320LF2407A作为控制器的系统及其电路设计，说明了嵌入式实时操作系统μC/OS-Ⅱ在TMS320LF2407A上的移植和抢占式多任务的建立；实现了系统设计的数字化和小型化。

The main drive system and drive circuit design, chip select and hardware for research and design.

主要是对驱动系统和驱动电路的设计、芯片选择和硬件实现进行研究设计。

With a team of technicians experienced in LED display cover development and PCB circuit design.

我司主要管理和技术人员均具有丰富LED显示外壳的开发和配套PCB电路设计的丰富经验。

This paper introduces the application of the computer monitor and control technique in the drive control system of paper machine, and puts forward a scheme of the master system and the slave system, the scheme and structure of hardware, key circuit used the slave system are discussed, the software system fit to the drive control system of paper machine is designed . In allusion to request of system,design the configure software and human-machine interface of the master system.

文中介绍了计算机监控技术在纸机传动控制系统的应用概况，提出了在纸机传动控制系统中上位机系统和下位机系统的设计方案，并对下位机系统的硬件方案、结构以及关键电路进行了分析，设计了符合纸机传动控制需要的软件系统，针对控制系统的要求，设计了上位机系统的组态软件和画面。

This article introduced based on the DSP heart electricity meter development and the development, mainly includes the hardware electric circuit and the software procedure.

本文介绍了基于DSP的心电仪的研制和开发，主要包括硬件电路和软件程序。

Yidong Electronic Group - precision connector, electronic connector and plug, FPC material and products, backlight for display industry, terminals and bezels for LCD

奕东集团-精密连接器和显示器件，电子连接器与接插件、挠性印制电路基材与产品、光电显示领域的背光源、液晶显示器用金属端子和模块铁框

The first and the second chapters will discuss the significance of reseach, and system plan of the Marine SHARS, including the design of system function, the selection of inertial devices and design of system function, and A/D convertors and the construction of hardwares and softwares of the Marine SHARS.

第一部分讨论了舰载捷联式航向姿态基准系统的选题意义、系统总体方案的设计思想，其中包括系统功能的方案设计、惯性仪表和模/数转换电路的选择、导航计算机系统硬件和软件的方案设计等。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。