針對(duì)當(dāng)前安檢力學(xué)試驗(yàn)機(jī)所能完成的試驗(yàn)種類單一、自動(dòng)化程度低等問題，提出一種以ATmega128單片機(jī)為核心控制器的安檢力學(xué)試驗(yàn)機(jī)的設(shè)計(jì)。詳細(xì)闡述了該安檢力學(xué)試驗(yàn)機(jī)各個(gè)組成部分的設(shè)計(jì)原理和方案，并且給出了各部分的軟件設(shè)計(jì)思想和操作流程。經(jīng)過大量測(cè)試試驗(yàn)表明：設(shè)計(jì)的安檢力學(xué)試驗(yàn)機(jī)可以完成多達(dá)十余種的力學(xué)安檢試驗(yàn)，完全符合相關(guān)國(guó)家標(biāo)準(zhǔn)，并且具有數(shù)據(jù)采集精度高、傳輸速度快、操作安全簡(jiǎn)便等特點(diǎn)，實(shí)現(xiàn)了安檢設(shè)備的多功能化、數(shù)字化和自動(dòng)化。 Abstract: Currently， many Mechanical security testing machines have only one function. The degree of automation of them is low. To solve those problems， a new kind of Mechanical security testing machine， using ATmega128 micro-controller as its core controller， has been advanced. It describes the components of the machine. The principles and the scheme in the designing processes are presented in detail， and the software architecture and the operation processes of each part are given. After having done many testing， we have reached the following conclusions: the Mechanical security testing machine presented can do over ten Mechanical security tests complying with related national standards. It has high data acquisition accuracy and high transmission speed. The operation of the machine is simple and safe. In general， this machine is a multi-functional， highly automatic， digitalized security testing device.
標(biāo)簽： ATmega 128 安檢 試驗(yàn)機(jī)
上傳時(shí)間： 2013-11-05
上傳用戶：a67818601
Information in this document is subject to change without notice and does notrepresent a commitment on the part of the manufacturer. The software describedin this document is furnished under license agreement or nondisclosureagreement and may be used or copied only in accordance with the terms of theagreement. It is against the law to copy the software on any medium except asspecifically allowed in the license or nondisclosure agreement. The purchasermay make one copy of the software for backup purposes. No part of this manualmay be reproduced or transmitted in any form or by any means, electronic orMechanical, including photocopying, recording, or information storage andretrieval systems, for any purpose other than for the purchaser’s personal use,without written permission.
上傳時(shí)間： 2014-12-27
上傳用戶：Tracey
CAT5110/18/19/23/24/25 linear-taper digitally programmable potentiometers perform the same function as a Mechanical potentiometer or a variable resistor. These devices consist of a fixed resistor and a wiper contact with 32-tap points that are digitally controlled through a2-wire up/down serial interface.
上傳時(shí)間： 2013-11-22
上傳用戶：541657925
Xilinx is disclosing this user guide, manual, release note, and/or specification (the "Documentation") to you solely for use in the developmentof designs to operate with Xilinx hardware devices. You may not reproduce, distribute, republish, download, display, post, or transmit theDocumentation in any form or by any means including, but not limited to, electronic, Mechanical, photocopying, recording, or otherwise,without the prior written consent of Xilinx. Xilinx expressly disclaims any liability arising out of your use of the Documentation. Xilinx reservesthe right, at its sole discretion, to change the Documentation without notice at any time. Xilinx assumes no obligation to correct any errorscontained in the Documentation, or to advise you of any corrections or updates. Xilinx expressly disclaims any liability in connection withtechnical support or assistance that may be provided to you in connection with the Information.
標(biāo)簽： Virtex FPGA PCB 設(shè)計(jì)手冊(cè)
上傳時(shí)間： 2014-01-13
上傳用戶：竺羽翎2222
Xilinx is disclosing this user guide, manual, release note, and/or specification (the “Documentation”) to you solely for use in the development of designs to operate with Xilinx hardware devices. You may not reproduce, distribute, republish, download, display, post, or transmit the Documentation in any form or by any means including, but not limited to, electronic, Mechanical, photocopying, recording, or otherwise, without the prior written consent of Xilinx. Xilinx expressly disclaims any liability arising out of your use of the Documentation. Xilinx reserves the right, at its sole discretion, to change the Documentation without notice at any time. Xilinx assumes no obligation to correct any errors contained in the Documentation, or to advise you of any corrections or updates. Xilinx expressly disclaims any liability in connection with technical support or assistance that may be provided to you in connection with the Information.
標(biāo)簽： CPLD
上傳時(shí)間： 2013-10-22
上傳用戶：李哈哈哈
The field of microelectroMechanical systems (MEMS), particularly micromachinedMechanical transducers, has been expanding over recent years, and the productioncosts of these devices continue to fall. Using materials, fabrication processes, anddesign tools originally developed for the microelectronic circuits industry, newtypes of microengineered device are evolving all the time—many offering numerousadvantages over their traditional counterparts. The electrical properties of siliconhave been well understood for many years, but it is the Mechanical properties thathave been exploited in many examples of MEMS. This book may seem slightlyunusual in that it has four editors. However, since we all work together in this fieldwithin the School of Electronics and Computer Science at the University of Southampton,it seemed natural to work together on a project like this. MEMS are nowappearing as part of the syllabus for both undergraduate and postgraduate coursesat many universities, and we hope that this book will complement the teaching thatis taking place in this area.
上傳時(shí)間： 2013-10-16
上傳用戶：朗朗乾坤
機(jī)電類比法是一種把機(jī)械量通過一定的計(jì)算等效類比為電量的方法，其在對(duì)電子機(jī)械系統(tǒng)的分析中應(yīng)用非常廣泛。它能夠把一個(gè)較復(fù)雜的機(jī)械系統(tǒng)類比為我們熟知的電路系統(tǒng)來進(jìn)行分析，從而使問題的分析得到簡(jiǎn)化。本文通過對(duì)振弦式傳感器的分析介紹了機(jī)電類比法，并對(duì)使用電路進(jìn)行了相關(guān)的分析。 Summary：The electroMechanical analogy is assort of analysis which is to analogize the Mechanical system by using circuit system , it applied widely in the filed of analysis the electronic-Mechanical system. The analysis can take a complex Mechanical system analogous to a circuitry that we well-known, which can simplify the problems. In the paper, the electro-Mechanical analogy method is briefly introduced by analysis the vibrating wire sensor，and have a correlation analysis about the circuit we used.關(guān)鍵詞： 機(jī)電類比法 振弦式傳感器 頻率 振蕩 反饋Keyword：electro-Mechanical analogy method，vibrating wire sensor，frequency, oscillation, feedback 0 引言振弦式傳感器是屬于頻率式傳感器的一種。所謂頻率式傳感器就是能直接將被測(cè)量轉(zhuǎn)換為振動(dòng)頻率信號(hào)的傳感器，這類傳感器一般是通過測(cè)量振弦、振筒、振梁、振膜等彈性振體或石英晶體諧振器的固有諧振頻率來達(dá)到測(cè)量引起諧振頻率變化的被測(cè)非電量的目的，其也稱為諧振式傳感器[1]。在分析該類傳感器中，由于其涉及到頻率，就容易讓人聯(lián)想到在電子技術(shù)中接觸到的RLC振蕩電路。因此可以嘗試著用類比的方法使之對(duì)應(yīng)起來分析,即機(jī)電類比法分析。
上傳時(shí)間： 2013-11-16
上傳用戶：paladin
Xilinx is disclosing this user guide, manual, release note, and/or specification (the "Documentation") to you solely for use in the developmentof designs to operate with Xilinx hardware devices. You may not reproduce, distribute, republish, download, display, post, or transmit theDocumentation in any form or by any means including, but not limited to, electronic, Mechanical, photocopying, recording, or otherwise,without the prior written consent of Xilinx. Xilinx expressly disclaims any liability arising out of your use of the Documentation. Xilinx reservesthe right, at its sole discretion, to change the Documentation without notice at any time. Xilinx assumes no obligation to correct any errorscontained in the Documentation, or to advise you of any corrections or updates. Xilinx expressly disclaims any liability in connection withtechnical support or assistance that may be provided to you in connection with the Information.
標(biāo)簽： Virtex FPGA PCB 設(shè)計(jì)手冊(cè)
上傳時(shí)間： 2013-11-11
上傳用戶：zwei41
MP3 portable players are the trend in music-listening technology. These players do not includeany Mechanical movements, thereby making them ideal for listening to music during any type ofactivity. MP3 is a digital compression technique based on MPEG Layer 3 which stores music ina lot less space than current CD technology. Software is readily available to create MP3 filesfrom an existing CD, and the user can then download these files into a portable MP3 player tobe enjoyed in almost any environment.
上傳時(shí)間： 2013-11-23
上傳用戶：nanxia
Xilinx is disclosing this user guide, manual, release note, and/or specification (the “Documentation”) to you solely for use in the development of designs to operate with Xilinx hardware devices. You may not reproduce, distribute, republish, download, display, post, or transmit the Documentation in any form or by any means including, but not limited to, electronic, Mechanical, photocopying, recording, or otherwise, without the prior written consent of Xilinx. Xilinx expressly disclaims any liability arising out of your use of the Documentation. Xilinx reserves the right, at its sole discretion, to change the Documentation without notice at any time. Xilinx assumes no obligation to correct any errors contained in the Documentation, or to advise you of any corrections or updates. Xilinx expressly disclaims any liability in connection with technical support or assistance that may be provided to you in connection with the Information.
標(biāo)簽： CPLD
上傳時(shí)間： 2014-12-05
上傳用戶：qazxsw
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