查询词典 digital control

the digitized mapping technique is to combine the field data collection system with the computer assisted mapping system in surveys by computer technology.it aims to realize the information collected and processed digitally and automaticaity.the digitized mapping technique can cut short the working time,lighten the labor intensity and enhance the precision of the productions.the system consists of three parts,such as data input,data processing and data output.the survey-record digitized mapping technique is widely used in the digitized mapping working pattern.for its superiority over traditional plane-table mapping in accuracy and efficiency,the large scale digital mapping is becoming more and more popular.compared with traditional analogue mapping,digital mapping has more quality control pivotai points,and its contents and methods are more complex.with the appearance of new technology gps ,the coordinate of different levels controlling points may be surveyed in high precision and it has been applied widely in topographic survey.the operation process of gps electronic tachometer is introduced and its application in topographic survey is br

计算机应用论文，计算机论文， rtk ，全站仪，数字测图，地形测量， gps论文摘要：数字测图是在测量工作中利用电子计算机技术将野外数据采集系统与内业机助制图系统相结合，其目标是实现信息采集处理的数字化、自动化、信息化。数字测图可以缩短作业时间，减轻劳动强度，提高成果精度。数字测图系统主要由数据输入、数据处理和数据输出3部分组成，数字测图作业模式中测记式数字测图应用最为广泛。大比例尺数字测图正以其测图精度高，成图速度快等优势逐步的取代传统的，以平板仪为主的模拟测图。与传统的模拟测图相比，数字测图的质量控制关键点更多、内容与方法更为复杂。gps 新技术的出现，可以高精度并快速地测定各级控制点的坐标，在地形测量中已得到广泛地应用。本文介绍了gps 配合全站仪的作业流程，简要阐明了其在地形测量中的应用。在利用实测数据成图的过程中，解决一些常见的问题，并给出解决的办法及依据，同时给出一些有益的结论，以适应实际使用的需要。

This article main research liquid crystal module character and the digital demonstration, controls the monolithic integrated circuit through the wireless remote control, thus realizes the preinstall character and the digital liquid crystal display.

本文主要研究液晶模块字符和数字的显示，通过无线遥控来控制单片机，从而实现预设字符和数字的液晶显示。

MSP430F169 microcontroller was the core components of control and measurement function of an electromagnetic relay characteristic parameter tester. The tester also included DC power module, power amplifier module, constant current source module, keys, and digital tube display module. The tester could test the data of 943-1C-12DS electromagnetic relays including the minimum pull-in voltage, maximum release voltage, relay coil voltage rating when the pull-contact time, release time as well as the contact value of the contact resistance. The system could complete automatic measurement parameters to achieve all the basic requirements of design. And all of the test data was displayed through the 74HC573 digital tube.

摘 要：以MSP430F169单片机作为控制和测量的核心部件，辅以直流稳压电源模块、功率放大电路模块、恒流源模块、按键和数码管显示模块等组成一个电磁式继电器特性参数测试仪，完成对943-1C-12DS电磁式继电器最小吸合电压、最大释放电压、继电器线圈电压为额定值时的触点吸合时间、释放时间以及触点接触电阻值的测试，该系统能够实现成套参数自动测量，所有测试数据通过74HC573数码管进行显示。

The main features of the system are: the communications line is not only used for data transmission but also responsible for the system control and management; only one analogue to digital converter is needed for the whole system; a digital trimmer which is analogous to the adjustable resister in function is installed to each sub—system.

本文所进行的数字型条干均匀度测试仪的系统设计，采用了多微处理器的分布式并行结构，提出了一种数字信号的总线结构，采取了数据预处理和数字微调等措施，其主要特点为：半双工异步通信线不但用于数据传输，而且还负责系统的控制和管理；整个系统只需一路模数转换器；各子系统均设有数字微调装置，其功能类似于模拟电路中的电位器，可独立进行参数调整。

Digital signal processor DSP and realizes each kind of digital signal processing algorithm prominent merit fast by its unique structure, in the correspondence, the radar, the sound navigation and ranging, voice signal processing, the imagery processing, the high-speed control and the instrumentation equipment and so on numerous domains has obtained the widespread application.

数字信号处理器DSP以其独特的结构和快速实现各种数字信号处理算法的突出优点，在通信、雷达、声纳、语音信号处理、图象处理、高速控制和仪器设备等众多领域获得了广泛应用。

Digital proofing system is based on digital publishing business card printing and membership card production system is based on the use of the same page the Teletext by computers and related equipment and software to reproduce color graphics and text information and control business card printing and membership card production quality of the production process.

数码打样编制因此数字不入书制卡和会员卡制息编制为本原，诳骗同一页面图文新闻由计算机及其不关摆设与软件来表现不黑白图文新闻，并把持制卡和会员卡制息不入产历程的质量。

This dissertation is mainly concerning digital image watermarking problems. In Chapter 2, a detailed survey on digital image watermarking is presented. In Chapter 3, an optimal scheme is proposed to use Human Visual System model to compute masking function. It will be used to control the strength of watermark signal for optimal embedding. In Chapter 4, we propose a novel watermarking scheme based on lattice vector quantization.

本文讨论了数字图像水印及其在多媒体安全中的应用，主要围绕下列问题进行研究和创新： 1、优化的水印嵌入模型：本文对基于直接序列扩频技术的水印算法进行了改进，根据人类视觉系统感知模型，提出了优化的水印嵌入模型，在不可感知性条件的限制下，使水印的鲁棒性达到最高。

Embedded Multimedia System can be used in people's life and work in all its aspects, in the industrial control and business management areas, such as smart industrial equipment, POS / ATM machines, such as IC card; in the family field, such as digital set-top boxes, digital television, WebTV, network refrigerators, air-conditioning and other networks and consumer electronics products, in addition, the system is still embedded multimedia electronic medical equipment, multimedia mobile phones, handheld computers, vehicle navigation, entertainment, military and other fields has great prospects.

嵌入式多媒体系统可应用在人们生活与工作的各个方面，在工业控制和商业管理领域，如智能控设备、 POS／ ATM机、C卡等；在家庭领域，如数字机顶盒，数字式电视、WebTV、网络冰箱、网络空调等消费类电子产品，此外，嵌入式多媒体系统还在医疗类电子设备、多媒体手机、掌上电脑、车载导航器、娱乐、军事方面等领域有着巨大的应用前景。

This system mainly contains the front-end pulse interception and back-end software analysis. In the first part, we used a non-invasive infrared measurement method based on the dual channel simultaneous measurement technique. We measured the photo-plethysmograph from the subject's fingers and toes simultaneously, then used an analog circuit and central control unit to process the signals. Finally, the digital volume pulse data is processed by a personal computer. Because the characteristic points of digital volume pulse always occur in sharp variations, this paper proposes two algorithms to solve this problem. First, we find the pacemaker and percussion wave peak from transient slope variation, and then locate the dicrotic notch and dicrotic wave peak by using the wavelet transformation algorithm. When we analyze the data, we use the Visual Basic graphical user interface, which together with the Matlab is the core of the system.

本系统主要包含前端脉波撷取及后端软体分析两部分，其中前端脉波撷取部份是以非侵入式的红外线量测方式，双通道同步量测受测者手指与脚趾的光容积变化描记图，同时将此讯号经类比处理电路及中央控制单元输出成为数位容积波，再传送至个人电脑中；而在后端软体分析部份，因数位容积波之特徵点皆出现於波形中急剧变化的部份，故本论文以瞬间斜率变化量来定位脉波讯号中的起搏点及主波峰顶点，并利用小波转换演算法（wavelet transformation algorithm）来分析重搏切迹与重搏波顶点；程式撰写主要以Matlab为核心，结合Visual Basic的图形化使用者操作介面，增加系统与使用者间的亲和力。

Both of the principles and their algorithms are tested by digital simulating tests. Finally, in order to simulatively test the protective property of microcomputerbased relay protections, a new power swing digital model is established using the calculation of BPAEMTP. New principles have been put forward in this process to solve two problems: One is to set up a new voltage simulating and control module for a multi-machine system in TACS of BPAEMTP.

应用系统振荡模型可以准确地模拟多机系统的任意实际振荡过程；应用BPAEMTP的振荡中故障模型可以计算任意网络、任意系统振荡过程中的任意故障（任意时刻、任意位置、任意故障类型），还很好地解决了初始稳态问题，此外模型可以计算任意长的数据窗。

Looking to bounce back from defeat against Cesena last weekend, the Calabrian boss will be sticking to his tried and tested 4-3-3, with Lopez and Sedivic joined up front in Giampaolo's absence by either Nanni or Plasmati.

鉴于上周末对切塞纳的比赛中反败为胜，这支南方球队将会更坚持其一贯而有效的4-3-3阵型，洛佩斯和塞德维奇将取代受伤缺席的詹保罗，和纳尼或者帕斯马蒂中的一个搭档锋线。

Meanwhile, their exposure to the more freewheeling ways of the West broadened dramatically.

另外，西方较自由的生活方式对年轻人的影响增大。