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The first practical examples of mobile communications were used in many countries like
the USA, the UK and Germany in military services, and played a significant role in the
First World War to TrAnsfer important information from the front to headquarters to take
further actions. Good and secure wireless communications were an important need for all
military services – army, navy and air force. In this respect, the Second World War was a big
experimental battlefield for the development and evolution of mobile radio. It was in the
interests of governments that after the Second World War the military investment should
be paid back by civilian use, and all western European countries started their so-called first
generation of mobile communication networks.
標簽：
Multimedia
Business
Mobile
The
上傳時間：
2020-06-01
上傳用戶：shancjb
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The advent of modern wireless devices, such as smart phones and MID 1 terminals,
has revolutionized the way people think of personal connectivity. Such devices
encompass multiple applications ranging from voice and video to high-speed data
TrAnsfer via wireless networks. The voracious appetite of twenty-first century users
for supporting more wireless applications on a single device is ever increasing.
These devices employ multiple radios and modems that cover multiple frequency
bands and multiple standards with a manifold of wireless applications often running
simultaneously.
標簽：
Architectures
Wireless
Receiver
Design
and
上傳時間：
2020-06-01
上傳用戶：shancjb
-
This book is focused on designing and developing Representational State TrAnsfer (REST)
platforms in Rails. REST is the architectural style of the Web, consisting of a set of
constraints that, applied to components, connectors, and data elements, constitute the
wider distributed hypermedia system that we know today: the World Wide Web.
There are a few good reasons why it makes more sense to build platforms instead of just
products or applications. Platforms are like ecosystems interconnecting different
applications, services, users, developers, and partners. Platforms foster innovation through
the inputs of their direct collaborators. By providing application programming interfaces
(APIs) and software development kits (SDKs), platforms are more customer driven.
標簽：
Development
Building
RESTful
Rails
上傳時間：
2020-06-06
上傳用戶：shancjb
-
Introduction to Radio Frequency Identification (RFID): RFID is a
wireless modulation and demodulation technique for automatic
identification of objects, tracking goods, smart logistics, and access con-
trol. RFID is a contactless, usually short‐distance transmission and
reception technique for unique ID data TrAnsfer from a tagged object to
an interrogator (reader). The generic configuration of an RFID system
comprises (i) an ID data‐carrying tag, (ii) a reader, (iii) a middleware,
and (iv) an enterprise application.
標簽：
Chipless_Radio_Frequency_Identifi
cation
上傳時間：
2020-06-08
上傳用戶：shancjb
-
RFID (radio-frequency identification) is the use of a wireless non-contact system
that uses radio-frequencyelectromagnetic fields to TrAnsfer datafrom a tag attached
to an object, for the purposes of automatic identification and tracking [38]. The
basic technologies for RFID have been around for a long time. Its root can be traced
back to an espionage device designed in 1945 by Leon Theremin of the Soviet
Union,whichretransmittedincidentradiowaves modulatedwith audioinformation.
After decades of development, RFID systems have gain more and more attention
from both the research community and the industry.
標簽：
Infrastructure
RFID
as
an
上傳時間：
2020-06-08
上傳用戶：shancjb
-
Although state of the art in many typical machine learning tasks, deep learning
algorithmsareverycostly interms ofenergyconsumption,duetotheirlargeamount
of required computations and huge model sizes. Because of this, deep learning
applications on battery-constrained wearables have only been possible through
wireless connections with a resourceful cloud. This setup has several drawbacks.
First, there are privacy concerns. Cloud computing requires users to share their raw
data—images, video, locations, speech—with a remote system. Most users are not
willing to do this. Second, the cloud-setup requires users to be connected all the
time, which is unfeasible given current cellular coverage. Furthermore, real-time
applications require low latency connections, which cannot be guaranteed using
the current communication infrastructure. Finally, wireless connections are very
inefficient—requiringtoo much energyper TrAnsferredbit for real-time data TrAnsfer
on energy-constrained platforms.
標簽：
Embedded_Deep_Learning
Algorithms
上傳時間：
2020-06-10
上傳用戶：shancjb
-
This texts contemporary approach focuses on the concepts of linear control systems, rather than computational mechanics. Straightforward coverage includes an integrated treatment of both classical and modern control system methods. The text emphasizes design with discussions of problem formulation, design criteria, physical constraints, several design methods, and implementation of compensators.Discussions of topics not found in other texts--such as pole placement, model matching and robust tracking--add to the texts cutting-edge presentation. Students will appreciate the applications and discussions of practical aspects, including the leading problem in developing block diagrams, noise, disturbances, and plant perturbations. State feedback and state estimators are designed using state variable equations and TrAnsfer functions, offering a comparison of the two approaches. The incorporation of MATLAB throughout the text helps students to avoid time-consuming computation and concentrate on control system design and analysis
標簽：
控制系統(tǒng)
上傳時間：
2021-12-15
上傳用戶：
-
近距電能傳輸——高效安全近距電能傳輸一般基于電磁感應原理進行。在此技術基礎上，當接收器鄰近發(fā)射器時才會進行電能傳輸。電磁感應技術的歷史長達百年，多年米一直應用于各類電子產品中—如此普及全因其簡單、高效以及安全技術概覽以下將為你簡要介紹無線電能傳輸技術。System Overview(Communication)Receiver sends messagesTo provide control information to the transmitterBy load modulation on the power signaTransmitter receives messagesTo receive control information frorn the recelverBy de-modulation of the reflected loadPower Pick Up( Receiver)Secondary coil (L Serial resonance capacitor (C) for efficient power TrAnsfer Parallel resonance capacitor(C, )for detection purposes Rectifier: full bridge(diode, or switched)+ capacitor Output switch for(dis)connecting the loadReceiver modulates load by Switching modulation resistor(R,n),or Switching modulation capacitor(Ca)Transmitter de-modulates reflected load by Sensing pnmary coil curent (p)and/o Sensing primary coil voltage (V,
標簽：
qi
無線充電
上傳時間：
2022-03-31
上傳用戶：
-
The GL823K integrates a high speed 8051 microprocessor and a high efficiency hardware engine for the best data TrAnsfer performance between USB and flash card interfaces. Its pin assignment design fits to card sockets to provide easier PCB layout. Inside the chip, it integrates 5V to 3.3V regulator, 3.3V to 1.8V regulator and power MOSFETs and it enables the function of on-chip clock source (OCCS) which means no external 12MHz XTAL is needed and that effectively reduces the total BOM cost.
標簽：
GL823K
SCH
上傳時間：
2022-04-27
上傳用戶：qdxqdxqdxqdx
-
軟件小工具清單 設計工具類：AutoPOL for Windows(鈑金展開專家)FTI BlankWorks 2015(鈑金分析插件) 選型工具類恒星減速機三維選型軟件 V1.0官方版 查詢工具類LED代碼查詢 V1.1綠色版晶體管查詢軟件 v1.0rj數(shù)碼管段碼速查 V2.0綠色版 圖形工具類電路圖繪制工具(Circuit Diagram) v3.1官方免電氣原理圖設計軟件(QElectroTech) v0.51電氣原理圖繪制軟件(ProfiCAD) v8.0.2中文版 CAD插件類實體設計(CAXA 3D ) v2016官方版（試用） 格式轉換類單片機程序轉換工具TrAnsfer V1.43雕刻機NC轉換器(NCesc) 2.0綠色版功率電平轉換軟件 綠色版 其他BOAC串口調試助手v1.0官方版CAN口波特率計算工具(Brt01 for philips CANcccam數(shù)控車曲線宏程序生成器 v7.0官方版HART智能儀表組態(tài)軟件 v3.02cLED多功能自由分區(qū)（帶網(wǎng)口）IEC8705(電力規(guī)約分析器) 1.0 綠色版Led多功能自由分區(qū)2012綜合版軟件LM317計算器 綠色版MSP430仿真器降級程序(FET430UIF FW V3 to V2PCB布局工具(Diy layout Creater) v1.0免費版PCB彩色抄板軟件 Quick2005 v3.0免安裝版pic單片機定時初值計算器 1.0綠色版pwm計算工具 1.0綠色免費版R_C 模型計算器 2.0.1.1中文版smith圓圖軟件 2013綠色中文版Sunrise PIPENET VISION (管網(wǎng)流體計算模擬分UC384X振蕩器計算工具 綠色版zdqjs艾碼CRC16校驗工具 v1.0綠色版變壓器磁心功率快速估算工具 1.06綠色版變壓器數(shù)據(jù)計算 v1.0綠色版超級單片機工具 綠色版串口調試助手3 v3.04綠色版串口小工具 v0.60c綠色版單片機下載器(ISPlay) v1.5綠色版電容器相關計算軟件 v1.0電源線電壓衰減計算工具-強弱電施工小助手 v1.0多諧振蕩器周期計算器 V1.0 綠色版惠普終端仿真軟件 1.4.02中文版簡易單路邏輯分析儀 1.0 綠色版開關電源設計軟件 v2.0專業(yè)版模企寶 v8.0官方版三菱PLC to 51單片機HEX軟件 1.0綠色版數(shù)碼管計算器 1.0綠色免費版天線計算器 v0.2綠色版貼片電容阻值計算器 綠色版小功率濾波電容計算器 V1.0 綠色版小羊串口工具 v3.5綠色版液晶漢字模提取工具 綠色版圓形鐵心截面疊積尺寸計算工具 1.0綠色版駐波比與回波損耗換算器 V1.0綠色版駐波儀仿真器(SiteMaster Emulator) v2.2綠色GUIBuild(觸摸屏組態(tài)軟件) V5.10中文版IDq電力電氣工程綜合設計軟件 v6.0中文完整版LEDEasyShow(LED電子顯示屏設計軟件) v5.24中LED胸牌編輯軟件(MiniLED Display HID) v10.0MICROMETALS(電感設計軟件) v1.0綠色版NCEdit數(shù)控刀具 1.0免費中文版NE555芯片智能電路設計軟件 v1.2NUT電子讀寫頻軟件 1.10官方版PCB版圖設計工具(FreePCB) v1.359官方免費版Power World電力系統(tǒng)可視化設計軟件v8.0電氣線束線纜(E3.series2015version) v16.01分光比自動計算程序 V1.5免費版好易通TC600對講機寫頻軟件 1.21中文版機加工藝報價系統(tǒng) v12.6網(wǎng)絡版科智補償器輔助設計軟件 V1.2.20150520輪廓測量儀軟件 V1.0正式版
標簽：
電子計算軟件
eTools
上傳時間：
2022-06-13
上傳用戶：
