Building a robot and enabling it to sense its environment is a wonderful way to take your Arduino knowledge to the next level. In writing this book, I have brought together my love for invention and my experience with electronics, robotics and microcontrollers. I hope you have as much pleasure building and enhancing your robot as I did developing the techniques contained in this book.
標簽： Arduino-Controlled Robot Make an
上傳時間： 2020-06-09
上傳用戶：shancjb
Signals convey information. Systems transform signals. This book introduces the mathe- matical models used to design and understand both. It is intended for students interested in developing a deep understanding of how to digitally create and manipulate signals to measure and control the physical world and to enhance human experience and communi- cation.
標簽： Interpretation Structure and Signals Systems of
上傳時間： 2020-06-10
上傳用戶：shancjb
近年來反季節種植已成火熱趨勢,溫室大棚的普及十分迅速,而溫室大棚對自動化、智能化的要求也越來越迫切,本系統將溫室大棚的溫濕度、二氧化碳濃度各個方面的檢測,通風、澆灌、溫度、噴灑農藥等各個方面的控制進行綜合系統研究,實現溫室大棚對自動化、智能化的要求。這一系統是基于單片機控制的智能檢測,控制系統包含單片機主控模塊、感應檢測模塊、傳感模塊,顯示、控制模塊等[1]。從而提高溫室大棚的種植效率,減少勞動力,提高利潤等。In recent years,counter-season planting has become a hot trend featuring the rapid popularization of greenhouse and urgent requirement for the automation and intellectualization of greenhouse.This paper offers a comprehensive and systematic study of the monitoring of temperature,humidity and carbon dioxide concentration in the greenhouse and the control of ventilation,irrigation,temperature and pesticide spraying in order to achieve automation and intellectualization in greenhouse.This system is based on the intelligent detection controlled by single chip computer with the control system including the main control module,induction detection module,sensing module,display and control module of single chip computer,which is effective in improving planting efficiency of greenhouse,reducing labor force and increasing profits.
上傳時間： 2022-03-27
上傳用戶：
靜電放電（Electrostatic Discharge，ESD）是構成集成電路可靠性的主要因素之一，存在于生產到使用的每一個環節，并成為開發新一代工藝技術的難點之一，近年來，對ESD的研究也因而越來越受到重視，仿真工具在ESD領域的應用使得ESD防護的研究變得更為便利，可大幅縮短研發周期然而，由于ESD現象復雜的物理機制，極端的電場及溫度條件，以及ESD仿真中頻繁的不收斂現象，都使得FSD的仿真變得極為困難本文詳細闡述了ESD的來源、造成的危害以及如何測試集成電路的防靜電沖擊能力，并基于 Sentaurus軟件，對ESD防護器件展開了的分析、研究，內容包括1）掌握ESD保護的基本理論、測試方法和防護機理2）研究了工藝仿真流程的步驟以及網格定義在工藝仿真中的重要性，并對網格定義的方法進行了探討3）硏究了器件仿真流程以及器件仿真中的物理模型和模型函數，并對描述同一物理機制的的各種不同模型展開對比分析.主要包括傳輸方程模型、能帶模型、各種遷移率退化模型、雪崩離化模型和復合模型4）研究了雙極型晶體管和可控硅（Silicon Controlled rectifier，SCR）防護器件的仿真，并通過對仿真結果的分析，研究了ESD保護器件在ESD應力作用下的工作機理關鍵詞：靜電放電；網格；器件仿真；雙極型晶體管；可控硅
上傳時間： 2022-03-30
上傳用戶：
在傳統智能小車驅動電路設計中,較多考慮使用直流電機還是步進電機,電機功率、能耗等性能參數。使用具有armCortexM4內核的STM32嵌入式平臺控制四輪的4個直流電機。文章基于PWM技術及PID算法,對四輪進行精準地速度、轉向及啟停控制,實驗表明此小車具有優越各種地形適應能力。In the traditional intelligent car drive circuit design,DC motor or stepping motor,motor power,energy consumption and other performance parameters are considered.The four DC motors with four wheels are controlled by STM32 embedded platform with arm Cortex M4 kernel.Based on the PWM technology and PID algorithm,the accurate ground speed,steering,and start-stop control of the four wheels are carried out.The experiment shows that the vehicle has the superior adaptability to all kinds of terrains.
上傳時間： 2022-04-02
上傳用戶：
以單片機控制A/D轉換器TLC549為例,對A/D轉換器的主要技術指標進行了分析研究,在Proteus平臺下,完成了A/D轉換電路的構建,采用器件工作時序方式進行程序編寫,借助仿真圖表、虛擬儀器等工具對A/D轉換的數據進行測量并對失調誤差、增益誤差、微分非線性、積分非線性和轉換時間等重要參數進行了詳細分析。結果表明:使用Proteus軟件可對A/D轉換過程進行定性分析,將抽象的A/D轉換器技術指標直觀化、形象化展現出來,有助于學生更好地理解A/D轉換過程。The main technical indicators of A/D converter were analyzed and studied with an example from A/D converter TLC2543 which is controlled by using SCM.It was completed the construction of the A/D converter circuit under the Proteus software.The programming based on the operation sequence of the chip is put forward.With the aid of the simulation tools such as virtual instrument,simulation charts provided by Proteus,the important parameters of circuit such as offset error,gain error,differential nonlinearity(DNL),integral nonlinearity (INL) and conversion time are analyzed detailedly.Simulation results show that the A/D conversion process can be qualitatively analyzed and visualized the abstract indicators of A/D.The system can help students better to understand the SCM conversion process.
上傳時間： 2022-04-04
上傳用戶：
為了實時檢測血氧量,能使缺氧特別敏感的腦組織或心臟類疾病患者得到及時治療,采用近紅外雙波長透射式光電脈搏血氧測定法,以H橋電路對發射光源進行控制及通用運算放大器搭建濾波電路。運用參數理論計算和計算機仿真結果相對比的方法,通過Mu ltisim軟件對所設計電路進行仿真,仿真結果與理論參數計算相吻合,證明了電路參數設計的可行性,為血氧儀的實物制作提供參考。For real-time detection of oxygen saturation for timely treatment of the brain or heart,which are very sensitive to oxygen inadequacy,the near-infrared wavelengths double photoelectric pulse oximeter transmission method is adopted.The illuminant is controlled with the H bridge circuit and the filter circuit is built with general op-amps.Parameters by theoretical calculation is compared with the computer simulation results in Multisim and satisfactory results are obtained.It is shown that the design of the circuit parameters is feasible and can be a help in making the physical blood-oxygen monitor.
上傳時間： 2022-05-12
上傳用戶：
文章首先闡述了整個方案的工作原理，給出LDO設計的指標要求；其次，依據系統方案的指標要求和制造1藝約束，實現包含誤差放大器、基準源和保護電路等了模塊在內的電壓調整器：此外，文章還著重探討了“如何利用放大器驅動100pF數量級的大電容負載"的問題；最后，給出整個模塊總體電路的仿真驗證結果。LDO的架構分析和設計以及基準源的設計是本文的核心內容。在LDO架構設計部分，文章基于對三種不同LDO拓撲的分析，選擇并實現了含緩沖器級的LDO./設計中通過改進反饋網絡，采用反饋電容，實現對LDO的環路補償。同時，為提高誤差放大器驅動功率管的能力、適應LDO低功耗發展的需求，文章探討了如何使用放大器驅動大負載電容的問題，基于密勒定理和根軌跡原理，本文通過研究密勒電容的作用，采用MPC（Miller-Path-Compersation）結構，實踐了兩級放大器驅動大負載電容的方案，并把MPC補償技術推廣到三級放大器的設計中。文章設計的CRF（CRF：Current Re ference controlled by Feedback）電流基準是基于對傳統自啟動基準電流源的改進實現的。CRF基準電流源架構中存在一條阻性的電流道路，確保其在加載電源電壓的過程中能夠實現快速啟動，響應速度達到1ps：而傳統自啟動基準電流源在相同的設計參數下，響應速度長達120us.CRF基準電流源突破了響應速度對其應用的限制。
上傳時間： 2022-06-23
上傳用戶：
摘要：本系統以ICL8038集成塊為核心器件，制作一種函數信號發生器，制作成本較低。適合學生學習電子技術測量使用。ICL8038是一種具有多種波形輸出的精密振蕩集成電路，只需要個別的外部元件就能產生從0.001Hz~30KlHz的低失真正弦波、三角波、矩形波等脈沖信號。輸出波形的頻率和占空比還可以由電流或電阻控制。另外由于該芯片具有調制信號輸入端，所以可以用來對低頻信號進行頻率調制。關鍵詞：函數信號發生器頻率調制Abstract：The system ICL8038 integrated block as the core device，producing a kind of function signal generator，producing low cost.Suitable for students to learn the use of electronic technology measurement.ICL8038 is a kind of multi-precision oscillator waveform output integrated circuits，a separate external components only need to be able to generate from the 0.001Hz ~30KHz low-distortion sine wave，triangle wave，square wave pulse signal，etc..Output waveform of the frequency and duty cycle can also be controlled by a currentor resistance.In addition，as the chip has a modulated signal input terminal，it can be used to low-frequency signal is frequency modulation.
上傳時間： 2022-07-04
上傳用戶：zhanglei193
Agenda■Motor Types Overview■BLDC Motor Applications■Comparison of DC to Brushless DC Motors■Hall Sensors■Six-Step Commutation■Sensorless Commutation with Back-EMFVector Motor Control basicsClosed-Loop Speed Control■Introduction to BLDC Motor Control Evaluation Kit■SummaryAll the popular motor types have their specific applications, and all can be controlled with microcontrollers.We wll talk about Brushless DC motors as it is the fast growing motor type today.Motors used in modern Air conditioners, home appliances, tools, even electric bikes are all going to Brushless DC.
上傳時間： 2022-07-07
上傳用戶：
