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pci中文规范... 有需要的兄弟可以下载
pci中文规范... 有需要的兄弟可以下载-pci Chinese ... there is a need to standardize the brothers can be downloaded
- 2022-02-13 01:11:34下载
- 积分：1
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CO2测量容易使用化学转导法
CO2 Measurement easy to do methode using chemical transduction
- 2023-07-25 22:35:05下载
- 积分：1
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随着TLC1549 10模拟串口控制数字8051系统
带串行控制的10位模数转换器TLC1549在8051系统中的应用-with serial control of the TLC1549 10 Analog to Digital in 8051 System of
- 2022-11-08 20:00:08下载
- 积分：1
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This article: FPGA method used to simulate the high dynamic (Global Position Sys...
本文：采用了FPGA方法来模拟高动态(Global Position System GPS)信号源中的C／A码产生器。C／A码在GPS中实现分址、卫星信号粗捕和精码(P码)引导捕获起着重要的作用，通过硬件描述语言VERILOG在ISE中实现电路生成，采用MODELSIM、SYNPLIFY工具分别进行仿真和综合。-This article: FPGA method used to simulate the high dynamic (Global Position System GPS) signal source of the C/A code generator. C/A code in GPS to achieve sub-sites, the satellite signal capture coarse and fine code (P code) lead capture plays an important role, through hardware description language Verilog in ISE to achieve circuit to generate, using MODELSIM, SYNPLIFY simulation tools were and integrated.
- 2022-02-05 10:44:00下载
- 积分：1
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车身控制模块文档部分
包含工艺文件 程序模块说明
车身控制模块文档部分
包含工艺文件 程序模块说明-body control module contains documentation process documentation procedures module Description
- 2022-09-28 14:40:03下载
- 积分：1
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摘要:基于通信技术的列车运行控制系统(CBTC)是铁路信号的发展方向，交频分复用
OFDM)是一种无线环境下的高速传输技术，它对高速列车控制信息传输中卞要受...
摘要:基于通信技术的列车运行控制系统(CBTC)是铁路信号的发展方向，交频分复用
OFDM)是一种无线环境下的高速传输技术，它对高速列车控制信息传输中卞要受到的由于多
径传播引起的快衰落所产生的影响有很强的抵抗能力.本文首先介绍了OFDM技术的发展和
基本原理，然后在计算机上用M atlal〕对其性能进行了仿真，仿真中将OFDM与传统的单载波
调制方式―i1，交振幅调制( 1frQAM)对抗多径十扰的性能进行了比较，最后分析了一者的仿真结果.
-Abstract: Based on the communication technology train operation control system (CBTC) is a railway signal direction for the development of cross-frequency division multiplexing OFDM) is a wireless environment of high-speed transmission technology, its high-speed train control information transmission Bian be subject to the Due to the spread of multi-path fast fading caused by the impact of a strong resistance to diseases. This paper first introduces the OFDM technology development and the basic principles, and then on the computer〕 M atlal use its performance simulation will OFDM with the traditional single-carrier modulation-i1, cross-amplitude modulation (1frQAM) against multi-path interference of the 10 properties were compared with a final analysis of
- 2022-08-24 10:19:13下载
- 积分：1
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Wavelets have been widely used in many sign al and image processing applications...
Wavelets have widely been used in many signal and image processing applications. In this paper, a new
serial-parallel architecture for wavelet-based image compression is introduced. It is based on a 4-tap wavelet
transform, which is realised using some FIFO memory modules implementing a pixel-level pipeline
architecture to compress and decompress images. The real filter calculation over 4 ・ 4 window blocks is
done using a tree of carry save adders to ensure the high speed processing required for many applications.
The details of implementing both compressor and decompressor sub-systems are given. The primarily analysis
reveals that the proposed architecture, implemented using current VLSI technologies, can process a
video stream in real time.-Wavelets have been widely used in many sign al and image processing applications. In this p aper. a new serial-parallel architecture for wavele t-based image compression is introduced. It is based on a 4-tap wavelet transform. whic
- 2022-01-25 17:21:14下载
- 积分：1
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在数控机床中, 通常用可编程控制器( PLC) 对机床开关量信号进行控制。PLC可靠性高, 使用方便。但在大多数数控机床, 特别是经济型数控机床中, 要求的输入...
在数控机床中, 通常用可编程控制器( PLC) 对机床开关量信号进行控制。PLC可靠性高, 使用方便。但在大多数数控机床, 特别是经济型数控机床中, 要求的输入输出点数并不多, 通常在60点以下,因此, 为了降低数控机床成本, 在基于工业PC机的数控系统中, 可以采用开关量I/O板加外接继电器,配合主机的软件对机床开关进行控制。但如果PC机采用单任务操作系统(如DOS) , 数控系统的所有任务运行都置于一个总体的消息循环中, 软件的模块化和可维护性较差, 系统故障的风险相对集中, 而且不能充分利用PC机系统资源。而采用非实时多任务操作系统(如Windows) 时, Win32 API的设计没有考虑到实时环境的开发用途, 其系统调用的效率不高,不能满足数控系统PLC控制的实时性要求。
为此, 本文提出一种基于RT - Linux操作系统的嵌入式PLC, 利用RT - Linux的开放性、模块化和可扩展性的系统结构特性和多线程/多任务的系统环境,在保证实时性的同时, 使故障风险相对分散。
-use linux to design plc
- 2022-02-03 18:12:02下载
- 积分：1
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Principle usb, organize online, and very useful!
usb的原理,网上整理的，好不容易找到的，应该对很多人都很有用处！-Principle usb, organize online, and very useful!
- 2022-02-12 02:14:20下载
- 积分：1
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该系统是一个比较简单的新科库存管理系统，详细内容可以见文档说明。
PS：本人是vc＋＋的初学者，希望能通过审核，加入这个大家庭，与大家共同学习进步！...
该系统是一个比较简单的新科库存管理系统，详细内容可以见文档说明。
PS：本人是vc＋＋的初学者，希望能通过审核，加入这个大家庭，与大家共同学习进步！
- 2022-03-06 05:21:21下载
- 积分：1
