LED 線陣顯示裝置, 分為 LED 線性旋轉(zhuǎn)顯示主機(jī)和圖文錄入器兩部分。主機(jī)用直流電機(jī)帶動(dòng)由紅綠 LED 組成的線陣旋轉(zhuǎn), 同時(shí)線陣按照時(shí)序依次切換顯示狀態(tài), 在固定區(qū)域利用視覺暫留效果形成 16×16 點(diǎn)陣, 用以顯示圖文;圖文錄入器用 HMI 觸控屏作為人機(jī)交互界面, 實(shí)現(xiàn)圖文錄入和回放功能。主機(jī)與圖文錄入器通過無線通信方式進(jìn)行信息交互,可由圖文錄入器控制主機(jī)切換不同工作任務(wù), 以及改變線陣顯示內(nèi)容。The LED linear array display device is divided into two parts:the one is the main unit used to display content,and the other one is used to input the contents.The main unit is driven by a DC motor to rotate the linear array composed by red and green light emitting diodes.At the same time,the 16×16 dot matrix that switching the display state according to the time sequence on the main unit displays pictures and texts in the fixed area,by using the visual temporary effect.The HMI touch screen is used as human machine interface to realize the function that input and playback pictures and texts.The two parts of the device communicate with each other through wireless communication.The image and text input controller can control the main unit to switch different tasks and change the content of linear array displayed.
標(biāo)簽： stc12c5a60s2 單片機(jī) led
上傳時(shí)間： 2022-03-28
上傳用戶：jiabin
為設(shè)計(jì)高效率、低損耗的PFC電路,本文基于UCC28019進(jìn)行電路設(shè)計(jì)。以UCC28019輸出的PWM波形來控制Boost升壓斬波為核心電路,使電路中的電容交替地充放電、電感交替的儲(chǔ)存和釋放能量,最后實(shí)現(xiàn)在輸入AC20V~24V電壓情況下穩(wěn)定輸出DC38V。測(cè)試結(jié)果表明,系統(tǒng)實(shí)現(xiàn)效率為95%左右,電壓調(diào)整率小于1%,電源功率因數(shù)0.99。交流輸入電壓為19.0-25.8 V時(shí),輸出直流電壓穩(wěn)定性較好,電感無明顯嘯叫且紋波小,具有一定的帶負(fù)載能力和實(shí)用性。In order to design the PFC circuit with high efficiency and low loss,this paper designs the circuit based on UCC28019.The PWM waveform output by UCC28019 is used to control boost chopper as the core circuit,which alternately charges and discharges capacitors,stores and releases energy by inductors,and finally achieves stable output of DC38 V under the input voltage of AC20 V~24 V.The test results show that the system achieves about 95% efficiency,the voltage adjustment rate is less than 1%,the power factor is 0.99,and the AC input voltage is 19.0-25.8 V.The output DC voltage stability is good,the inductance has no obvious whistle and the ripple is small,so it has certain load capacity and practicability.
標(biāo)簽： ucc28019 pfc 電路設(shè)計(jì)
上傳時(shí)間： 2022-04-03
上傳用戶：
高通(Qualcomm)藍(lán)牙芯片QCC5144_硬件設(shè)計(jì)詳細(xì)指導(dǎo)書（官方內(nèi)部培訓(xùn)手冊(cè)）其內(nèi)容是針對(duì)硬件設(shè)計(jì)、部分重要元器件選擇(ESD，F(xiàn)ilter）及走線注意事項(xiàng)的詳細(xì)說明。2 Power management 2.1 SMPS 2.1.1 Components specification 2.1.2 Input power supply selection 92.1.3 Minimize SMPS EMI emissions 2.1.4 Internal LDOs and digital core decoupling 2.1.5 Powering external components 2.2 Charger 2.2.1 Charger connections.2.2.2 General charger operation2.2.3 Temperature measurement during charging 2.3 SYS_CTRL 3 Bluetooth radio3.1 RF PSU component choice 3.2 RF band-pass filter3.3 Layout (天線 走線的注意事項(xiàng))4 Audio4.1 Audio bypass capacitors 4.2 Earphone speaker output4.3 Line/Mic input 4.4 Headphone output optimizition5 LED pads 5.1 LED driver 5.2 Digital/Button input 5.3 Analog input5.4 Disabled 6 Reset pin (Reset#)7 USB interfaces7.1 USB device port7.1.1 USB device port7.1.2 Layout notes 7.1.3 USB charger detectionA QCC5144 VFBGA example schematic and BOM B Recommended SMPS components specificationB.1 Inductor specifition B.2 Recommended inductors B.3 SMPS capacitor specifition
上傳時(shí)間： 2022-04-07
上傳用戶：默默
介紹一種萬能模擬信號(hào)輸入采集電路,可以同時(shí)支持電壓、電流、熱電偶、熱電阻等常見的工業(yè)類型信號(hào),方便后級(jí)電路的測(cè)量。該研究成果通過不斷優(yōu)化和完善,已成功應(yīng)用到了中控儀表的新產(chǎn)品中。The paper introduces a collection circuit of universal signal input. The circuit support voltage, current, thermocouple, thermal resistance and other common industrial type signal. The research results, which has been continuous optimized and improved, has been successfully applied to the new production of Zhejiang Supcon Instrument Co., Ltd.
標(biāo)簽： 采集電路
上傳時(shí)間： 2022-04-21
上傳用戶：slq1234567890
如果在調(diào)諧器或電視機(jī)附近使用本機(jī)或任何其他使用微處理器的電子設(shè)備，則可能會(huì)產(chǎn)生圖像的噪聲或干擾。如果發(fā)生這種情況，請(qǐng)采取以下步驟將本機(jī)安裝在盡可能遠(yuǎn)離調(diào)諧器或T的地方。遠(yuǎn)離調(diào)諧器或T，遠(yuǎn)離本機(jī)的電源線和輸入/輸出連接電纜。尤其在使用室內(nèi)天線或300歐姆饋線。我們建議使用室外天線和75 Q / ohm同軸電纜Noise or disturbance of the picture may be generated if this unit or any other electronic equipment using microprocessors is used near a tuner or TV If this happens, take the following stepsInstall this unit as far away as possible from the tuner or T Run the antenna wires from the tuner or T away from this unit ' s power supply cord and input/output connection cables. Noise or disturbance tends to occur particularly when using indoor antennas or300 ohm feeder wires. We recommend using outdoor antennas and 75 Q/ohm coaxial cables
標(biāo)簽： 功放
上傳時(shí)間： 2022-04-22
上傳用戶：
超聲波換能器作為一種實(shí)用的檢測(cè)手段，能實(shí)現(xiàn)聲波所攜帶的信息和電能之間轉(zhuǎn)換。它的性能優(yōu)良，價(jià)格低廉，操作方便，易于調(diào)試，因此在工農(nóng)業(yè)生產(chǎn)中發(fā)揮著重要的作用。但目前換能器驅(qū)動(dòng)電路的發(fā)射頻率多為40 kHz，本文針對(duì)1 MHz的超聲波換能器電路進(jìn)行了設(shè)計(jì)，主要介紹了它的發(fā)射驅(qū)動(dòng)電路和接收驅(qū)動(dòng)電路的設(shè)計(jì)方案，并對(duì)它們的功能進(jìn)行了詳細(xì)地說明。最后搭建實(shí)驗(yàn)平臺(tái)，并對(duì)電路的輸入、輸出模塊進(jìn)行了測(cè)試。實(shí)驗(yàn)結(jié)果表明，換能器電路運(yùn)行良好，可以為超聲波高精度測(cè)量領(lǐng)域的應(yīng)用提供參考。As a practical means of detection, ultrasonic transducer can realize the conversion between theinformation carried by sound wave and electric energy.It has the advantages of excellent performance,low cost, convenient operation and debugging, so plays an important role in industrial and agriculturalproduction.However, the transmitting frequency of the driving circuit for most transducer is 40 kHz.Thecircuit of 1 MHz ultrasonic transducer is designed In this paper. It mainly introduces the emissive drivingcircuit and the receiving circuit design and the detailed function of them. Finally, the experimentalplatform is built, and the circuit of input and output were tested. Experiments show that the transducer＇ s...
標(biāo)簽： 換能器 驅(qū)動(dòng)電路
上傳時(shí)間： 2022-04-28
上傳用戶：
數(shù)字頻率計(jì)是電工電子中常用的測(cè)量?jī)x器,數(shù)字頻率計(jì)通過用輸入待測(cè)信號(hào)對(duì)一特定長(zhǎng)度的信號(hào)進(jìn)行計(jì)數(shù),從而得出頻率并通過數(shù)碼管直觀的顯示出來。本文提出了一種與輸入同步的數(shù)字頻率計(jì)的設(shè)計(jì),提高了頻率計(jì)的精度,設(shè)計(jì)采用Multisim軟件進(jìn)行設(shè)計(jì)和仿真的過程,介紹了其工作原理,硬件電路設(shè)計(jì)和仿真的過程。設(shè)計(jì)采用了Multisim軟件進(jìn)行設(shè)計(jì)和仿真,設(shè)計(jì)結(jié)果得到的驗(yàn)證。Digital frequency counter is used to measure the frequency of a signal.It is common to use a multivibrator to generate a standard 1 second time base signal and count input signal gated by this signal.However,the asynchronous of this time base signal with input signal will bring errors.In this paper,a high precision frequency counter which use synchronized time base signal generator is proposed.This frequency counter is designed and simulated by Multisim tools and result is verified.
標(biāo)簽： multisim
上傳時(shí)間： 2022-05-08
上傳用戶：
CH7525 is a low-cost, low-power semiconductor device that translates the DisplayPort signal to HDMI/DVI. This innovative DisplayPort receiver with an integrated HDMI Transmitter is specially designed to target the notebook/ultrabook, tablet device and PC market segments. Through the CH7525’s advanced decoding / encoding algorithm, the input DisplayPort high-speed serialized multimedia data can be seamlessly converted to HDMI/DVI output.
上傳時(shí)間： 2022-06-02
上傳用戶：
ATS2819/ATS2819P標(biāo)準(zhǔn)應(yīng)用方案主要分為以下功能模塊：Power Supply，BlueTooth，Audio Input/Output（包括codec、I2C、SPDIF），F(xiàn)M Receiver，disaplay（LED&LCD），USB，SPI NOR Flash Memory，SD/MMC/MS Card等。1.2原理圖設(shè)計(jì)總體原則1原理圖設(shè)計(jì)需要按照方案規(guī)格的要求實(shí)現(xiàn)各項(xiàng)硬件功能，盡量避免功能模塊相互間的資源沖突。如果存在I/O復(fù)用，接收復(fù)用等情況，除了需注意檢查I/O上電狀態(tài)，接口時(shí)序等，還需要注意復(fù)用的SIO工作頻率與工作電壓域是否符合要求(如WIO)，確保功能設(shè)計(jì)正確實(shí)現(xiàn)。2原理圖設(shè)計(jì)要求性能達(dá)到要求。如穩(wěn)定性，啟動(dòng)電壓，功耗，ESD，EMI等。要注意檢查模塊電源開關(guān)狀態(tài)，選擇的原件標(biāo)稱及精度、材質(zhì)，接口保護(hù)元件和EMI濾波器等。3系統(tǒng)時(shí)鐘26MHZ，要求CL為7~9PF，精度為+-10PPM。這樣才能保證系統(tǒng)能正常工作。4當(dāng)設(shè)計(jì)PCB受限于模具大小時(shí)，各個(gè)模塊無法保證均能得到最優(yōu)的布局布線(如濾波電容要求靠近IC、走線上要求盡量少的過孔與盡可能短的走線)。因?yàn)樵诖私o出一個(gè)模塊優(yōu)先級(jí)以供設(shè)計(jì)人員參考，從而提高方案設(shè)計(jì)的效率，增加一版work的可行性。將優(yōu)先級(jí)以阿拉伯?dāng)?shù)據(jù)排列
標(biāo)簽： ats2819 tws 藍(lán)牙音箱
上傳時(shí)間： 2022-06-07
上傳用戶：
ICN6201/02 is a bridge chip which receives MIPI? DSI inputs and sends LVDS outputs. MIPI? DSI supports up to 4 lanes and each lane operates at 1Gbps maximum; the totally maximum input bandwidth is 4Gbps; and the MIPI defined ULPS(ultra-low-power state) is also supported. ICN6201 decodes MIPI? DSI 18bepp RGB666 and 24bpp RGB888 packets.The LVDS output 18 or 24 bits pixel with 25MHz to 154MHz, by VESA or JEIDA format.ICN6201/02 support video resolution up to FHD (1920x1080) and WUXGA (1920x1200).ICN6201 adopts QFN48 package and ICN6202 adopts QFN40 package
標(biāo)簽： icn6202
上傳時(shí)間： 2022-06-10
上傳用戶：kingwide
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