數字示波器功能強大,使用方便,但是價格相對昂貴。本文以Ti的MSP430F5529為主控器,以Altera公司的EP2C5T144C8 FPGA器件為邏輯控制部件設計數字示波器。模擬信號經程控放大、整形電路后形成方波信號送至FPGA測頻,根據頻率值選擇采用片上及片外高速AD分段采樣。FPGA控制片外AD采樣并將數據輸入到FIFO模塊中緩存,由單片機進行頻譜分析。測試表明:簡易示波器可以實現自動選檔、多采樣率采樣、高精度測頻及頻譜分析等功能。Digital oscilloscope is powerful and easy to use, but also expensive. The research group designed a low-cost digital oscilloscope, the chip of MSP430F5529 of TI is chosen as the main controller and the device of EP2C5T144C8 of Altera company is used as the logic control unit. Analog signal enter the programmable amplifier circuit, shaping circuit and other pre-processing circuit. The shaped rectangular wave signal is sent to FPGA for measure the frequency. According to the frequency value to select AD on-chip or off-chip high-speed AD for sampling. FPGA controls the off-chip AD sampling and buffers AD data by FIFO module. The single chip microcomputer receives the data, and do FFT for spectrum analysis. The test shows that the simple oscilloscope can realize automatic gain selection, sampling at different sampling rates, high precision frequency measurement and spectrum analysis.
上傳時間： 2022-03-27
上傳用戶：
資源較大，分為兩個部分，已全部上傳：第一部分：https://dl.21ic.com/download/arm-429326.html 第二部分：https://dl.21ic.com/download/arm-429325.html 本書介紹了意法半導體（STMicroelectronics，ST）公司的32位基于 ARM Cortex-M3內核的STM32單片機應用與實踐。通過“學中做、做中學”，即DIY（Do It yourself）和LBD（Learning By Doing）的方式，按照工作導向的思路展開教學與實踐學習，循序漸進地介紹和構建若干典型STM32單片機應用系統的硬件和軟件，以及相關傳感器電路，將STM32單片機的外圍引腳特性、內部結構原理、片上外設資源、開發設計方法和應用軟件編程等知識傳授給學生，對傳統的教學方法和教學體系進行創新，力求解決嵌入式系統課程抽象與難學的問題全書通俗易懂、內容豐富，可作為高等本科院校和職業技術學院的計算機、電子信息、自動化、電力電氣電子技術及機電一體化等相關專業的“32位高級單片機原理與應用”、“基于 ARM Cortex內核的單片機系統開發”等課程的教材和教學參考書，也可以作為工程實訓、電子制作與競賽的實踐教材和實驗配套教材，同時還可以供廣大從事自動控制、智能儀器儀表、電力電子、機電一體化等系統開發和設計的工程技術人員、教師者個人參考自學使用，并可作為ARM相關應用與培訓課程的參考書。
上傳時間： 2022-04-02
上傳用戶：
資源較大，分為兩個部分，已全部上傳：第一部分：https://dl.21ic.com/download/arm-429326.html 第二部分：https://dl.21ic.com/download/arm-429325.html 本書介紹了意法半導體（STMicroelectronics，ST）公司的32位基于 ARM Cortex-M3內核的STM32單片機應用與實踐。通過“學中做、做中學”，即DIY（Do It yourself）和LBD（Learning By Doing）的方式，按照工作導向的思路展開教學與實踐學習，循序漸進地介紹和構建若干典型STM32單片機應用系統的硬件和軟件，以及相關傳感器電路，將STM32單片機的外圍引腳特性、內部結構原理、片上外設資源、開發設計方法和應用軟件編程等知識傳授給學生，對傳統的教學方法和教學體系進行創新，力求解決嵌入式系統課程抽象與難學的問題全書通俗易懂、內容豐富，可作為高等本科院校和職業技術學院的計算機、電子信息、自動化、電力電氣電子技術及機電一體化等相關專業的“32位高級單片機原理與應用”、“基于 ARM Cortex內核的單片機系統開發”等課程的教材和教學參考書，也可以作為工程實訓、電子制作與競賽的實踐教材和實驗配套教材，同時還可以供廣大從事自動控制、智能儀器儀表、電力電子、機電一體化等系統開發和設計的工程技術人員、教師者個人參考自學使用，并可作為ARM相關應用與培訓課程的參考書。
上傳時間： 2022-04-02
上傳用戶：kent
為了確保最佳性能，請仔細閱讀本手冊。請將其保存在安全的地方，以備將來參考。將本機安裝在陰涼，干燥，清潔的地方-遠離窗戶的熱源，過多的振動灰塵，濕氣和冷源。避免嗡嗡聲的變壓器，電動機。為避免起火或電擊，請勿使本機遭受雨淋或浸水。絕對不要機柜。如果有東西掉入設備中，請與經銷商聯系。不要在開關，控件或連接線上用力。移動設備時，請先拔下電源插頭和與其他設備相連的電線。切勿自己拉電線。機柜上的開口可確保設備正常通風。如果這些開口被阻塞，則機柜內部的溫度將迅速升高。因此，請避免將物品放在這些開口處，并將其安裝在后方10厘米，兩側20厘米，深30厘米9通風條件確保設備的頂部面板至少留出一定空間。否則不僅會損壞設備，還會引起火災。To assure the finest performance, please read this manual carefully. Keep it in a safe place for future reference Install this unit in a cool, dry, clean place -away from windows heat sources, sources of excessive vibration dust, moisture and cold. Avoid sources of humming transformers, motors). To prevent fire or electrical shock do not expose the unit to rain or water.
上傳時間： 2022-04-02
上傳用戶：
在全球氣候變暖和石油資源短缺的形勢下,推動新能源汽車的發展將成為汽車行業一種新的發展方向。在大力發展新能源電動汽車行業的同時還應兼顧電動汽車充電設施的發展,因此對電動汽車充電樁的設計與研究顯得十分必要。對電動汽車直流充電樁的硬件系統進行設計,主要的硬件電路包括安全監測電路、總壓采集電路、溫濕度檢測電路、語音電路。軟件包括主要流程圖和溫濕度檢測流程圖。Under the situation of global warming and shortage of petroleum resources,promoting the development of new energy vehicles will become a new development direction for the automotive industry.While vigorously developing the new energy electric vehicle industry,we should also take into account the development of electric vehicle charging facilities.Therefore,the design and research of electric vehicle charging piles is very necessary.The hardware system of the electric vehicle DC charging pile is designed.The main hardware circuits include safety monitoring circuit,total voltage collecting circuit,temperature and humidity detecting circuit,voice circuit and CAN communication.The software includes a main flow chart and a temperature and humidity detection flow chart.
標簽： 電動汽車
上傳時間： 2022-04-03
上傳用戶：jason_vip1
實驗教學一直是工科教學中不可或缺的組成部分,對培養學生的動手能力,獨立思考能力,創新思維與發散思維具有重要的作用。針對目前電路教學實驗中電路仿真實驗與實物電路實驗各自獨立,無法統一問題,提出將仿真電路實驗與實物電路實驗有機的結合同步操作,并使用Web發布實現遠程實驗操作。采用Multisim作為電路實驗仿真平臺,NI Eiviss II作為實物電路實驗硬件平臺,運用LabVIEW整合Multisim電路仿真實驗與實物電路實驗,實現仿真與實物實驗有機結合,兩種實驗可同步進行。學生在仿真實驗中先可探索實驗,然后做實物實驗。同時運用LabVIEW開發出實驗過程人機交互操作接口界面,使用過程中效果良好。Experimental teaching has always been an indispensable part of engineering education.And it always plays an important role in cultivating students'practical ability,independent thinking ability,innovative thinking and divergent thinking.But simulation experiment and physical experiment cannot be unified in the circuit teaching experiment at present.In order to solve this problem,this paper proposes to combine organically the simulation circuit experiment with physical circuit experiment,and synchronously operate them.This paper uses the WEB publishing to achieve remote experimental operation.Multisim is used as the circuit simulation platform,and NI Eiviss II is used as the physical circuit hardware platform.Multisim circuit simulation experiment and physical circuit experiment are implemented by LabVIEW to realize the combination of simulation experiment and physical experiment.Students do explore experiments in simulation experiment firstly,and then do physical experiment.And this paper uses LabVIEW to develop the experimental man-machine interface.
上傳時間： 2022-04-05
上傳用戶：
最近經理通知要做項目了，讓我選型一個LCD開始試著做下。這是我用仿真實現的一個smt32的硬件SPI1來驅動的ST7735R，難度挺小的，因為大部分的代碼LCD的廠商已經給我們提供了，我們主要修改成硬件SPI來驅動就好了。 此次仿真上面有2個問題，不知道是代碼的問題還是仿真圖上的問題。第一個問題是仿真運行時有時會出通信數據傳輸問題，導致指令越界報警，這個可能是SPI不穩定導致的；第二個問題是在改用SPI2或者SPI3來驅動沒有任何反應，猜測是代碼時鐘沒開對或者仿真圖上面還要加上具體晶振。 代碼工程和仿真工程都已壓縮打包，可放心下載。。。先貼上仿真實現圖： 再貼上部分代碼：/**ST7735驅動**/#include "ST7735.h"#include "usart.h" u16 BACK_COLOR, POINT_COLOR; //背景色，畫筆色 void WriteCommand_7735(u8 CmdData) //寫指令{SPI_LCD_CS_LOW; //片選SPI_LCD_COMMAND_W;//寫指令SPI_I2S_SendData(LCD_SPIx,CmdData);while (SPI_I2S_GetFlagStatus(LCD_SPIx, SPI_I2S_FLAG_TXE) == RESET){}SPI_LCD_CS_HIGH;} void WriteDate_7735(u8 Data) //寫8位數據{SPI_LCD_CS_LOW; //片選SPI_LCD_DATA_W;//寫數據SPI_I2S_SendData(LCD_SPIx,Data);while(SPI_I2S_GetFlagStatus(LCD_SPIx, SPI_I2S_FLAG_TXE) == RESET){} SPI_LCD_CS_HIGH; } void WriteDate16(int data) //寫16位數據{WriteDate_7735(data>>8);WriteDate_7735(data);} 字符限制了，貼不了多少，2積分即可下載。。。
標簽： stm32 硬件 spi 驅動 tft lcd proteus
上傳時間： 2022-04-12
上傳用戶：
針對目前MSP430單片機實驗裝置較少、實驗內容少,而且無MSP430高端產品的實驗裝置,研制了基于MSP430F5529單片機的綜合實驗裝置,主要包括MSP430 Launch Pad和母板兩部分。較傳統的單片機實驗裝置增加了模擬電路的設置,設計的實驗能夠利用單片機的所有外設,可進行模塊基礎實驗和綜合實驗兩大類實驗,非常適合自動化和電氣信息類大學生學習使用。Concerning with the lack of experimental equipment and content based on MSP430,and especially,the experimental equipment of MSP430 senior products,an experimental equipment based on MSP430F5529 microcontroller is developed. It mainly consists of two parts： MSP430 Launch Pad and main board. Compared with traditional microcontroller experiment equipment,a few analog circuits were added. The experiment we set up takes advantage of all microcontroller peripherals. Students can do two kinds of experiments： module experiment and complex experiment.Therefore it fits university students in automation and electrical major very well.
標簽： msp430f5529 單片機
上傳時間： 2022-04-13
上傳用戶：
S32K1xx Series Reference Manual 用戶手冊--2029頁 Supports S32K116, S32K118, S32K142, S32K144, S32K146, and S32K148S32K是一款符合AEC-Q100規范、基于32位ARM Cortex-M4F和Cortex-M0+內核的MCU，適用于通用汽車和高可靠性工業應用。The S32K1xx product series further extends the highly scalable portfolio of Arm? Cortex?-M0+/M4F MCUs in the automotive industry. It builds on the legacy of the KEA series, while introducing higher memory options alongside a richer peripheral set extending capability into a variety of automotive applications. With a 2.70–5.5 V supply and focus on automotive environment robustness, the S32K product series devices are well suited to a wide range of applications in electrically harsh environments, and are optimized for cost-sensitive applications offering low pin-count options. The S32K product series offers a broad range of memory, peripherals, and package options. It shares common peripherals and pin counts, allowing developers to migrate easily within an MCU family or among the MCU families to take advantage of more memory or feature integration. This scalability allows developers to use the S32K product series as the standard for their end product platforms, maximizing hardware and software reuse and reducing time to market
標簽： S32K116 S32K118 S32K142 S32K144
上傳時間： 2022-04-16
上傳用戶：jason_vip1
隨著電磁閥在工業和日常應用的增多,其功耗越來越被人們所重視。通過對電磁閥驅動電路的研究,設計一套電磁閥節能驅動電路。不僅提高了電磁閥的響應時間,更重要的是降低了功耗,使電磁閥由工作在大電流狀態下,變成大電流啟動小電流維持的工作狀態。減少了由電流過大引起的電磁閥線圈過熱,增加了電磁閥的安全性。The power consumption of an electromagnetic valve is drawing increasingly more attentiori as it is widely used in industrial production and daily life. In this study, an energy - saving driving circuit of electromagnetic valves was designed. It can make an electromagnetic valve to start with a high current while work with a low current; thereby the power consumption can be reduced. Besides, it can shorten the response time of an electromagnetic valve and improve the security of the valve.
上傳時間： 2022-04-16
上傳用戶：
