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  • 半導體制冷溫度控制系統的設計研究

    在半導體制冷技術的工作性能及其優缺點研究的基礎上,設計了以單片機為核心控制元件,以TEC1-12706為執行元件的半導體制冷溫度控制系統。采用高精度分段式PID控制算法配合PWM輸出控制的方法實現溫度控制;選擇數字傳感器DS18B20為溫度檢測元件,還包含1602液晶顯示模塊、按鍵調整輸入模塊和H橋驅動模塊等。實際測試表明,該系統結構簡單易行,操作方便,工作性能優良,同時針對該系統專門設計的溫控算法,使半導體制冷器能更好地適應不同工況而充分發揮其制冷制熱工作特性。Based on the study of the performance and advantages and disadvantages of thermoelectric cooler(TEC)technology,a thermoelectric cooling temperature control system with single-chip microcomputer as the core control element and TEC1-12706 as the executive element was designed. High precision piecewise PID control algorithm combined with PWM output control method is adopted to realize temperature control. The digital sensor DS18B20 is selected as the temperature detection element. It also includes 1602 LCD module,key adjustment input module and H bridge drive module. The actual test shows that the system has simple structure,convenient operation and excellent performance. Meanwhile,the temperature control algorithm specially designed for the system can make the semiconductor cooler better adapt to different working conditions and give full play to its refrigeration and heating characteristics.

    標簽: 半導體 溫度控制系統

    上傳時間: 2022-03-27

    上傳用戶:

  • 基于單片機的紅外測溫裝置設計

    溫度控制如今已成為當代社會研究的熱點之一,而溫度檢測在現代設備參數檢測中也是一項極其重要的技術,應用十分廣泛。與傳統的測溫方法相比,紅外測溫方法具有時間短、精度高、使用簡單方便等優點。本文以環境溫度為被測對象,設計了以STC89C52單片機為控制中心的紅外測溫裝置,能夠實現對目標溫度的實時采集、處理、顯示和報警等功能。本設計主要是由STC89C52單片機、紅外測溫傳感器、LCD1602液晶顯示器、按鍵和蜂鳴器等部分組成,采用非接觸的方式對目標溫度進行實時檢測。Temperature control has become one of the hotspots in contemporary social research,and temperature detection is an extremely important technology in modern equipment parameter detection.Compared with traditional method,the infrared temperature measuring method has advantages of short time,high precision and convenient operation,etc.This paper consider environment temperature as research objects and designs an infrared temperature measuring device which employs the STC89C52singlechipas-control center,and it can realize timely collection,processing,display and alarm function of the target temperature.The design is mainly composed of STC89C52 singlechip,infrared temperature sensor,LCD1602monitor,keys and buzzer,etc.This design detects the target temperature by non-contact method.

    標簽: 單片機 紅外測溫

    上傳時間: 2022-03-27

    上傳用戶:jiabin

  • 磁致伸縮位移傳感器的設計與實現

    本文設計了一種磁致伸縮位移傳感器,介紹了該磁致伸縮位移傳感器的測量原理,通過結構優化設計提高了儀器的性能,詳述了硬件電路設計及實現方法,完成了軟件設計,實現了高壓充電、問詢脈沖加載、時間測量及濾波等功能,并通過實驗對其性能進行了驗證。所研制的磁致伸縮位移傳感器具有測量精度高、長期穩定性好等特點,滿足了大量程、高精度、惡劣環境等測量的要求。A kind of sensor based on magnetostrictive principle is designed.The measuring principle of the magnetostrictive displacement sensor is introduced,the performance of the instrument is improved by the structural optimization design,and introduced the hardware circuit design and the realization method,completed the software design,realized the functions of the high voltage charging,inquiries pulse loading,time measurement and filtering,and its performance is verified through the experiment.The magnetostrictive displacement sensor has the characteristics of high measuring precision.The sensor meets the requirements of large range,high precision,poor environment and so on.

    標簽: 位移傳感器

    上傳時間: 2022-04-06

    上傳用戶:

  • 高精度雙向DC電源電流采樣電路設計

    為適應雙向DC/DC功率變換的電流采樣需求,一種高精度高邊電流采樣電路被提出。其基本思想是在功率電路的高邊串入采樣電阻,借助電流鏡原理并引入偏置電流電路,將雙向電流均轉換為正向電壓輸出。通過理論分析與仿真結合的方法對電流鏡采樣原理及4種不同的偏置電流電路方案進行對比,最后通過實驗數據驗證了高精度高邊電流采樣電路的有效性。實驗數據表明,該采樣電路可在-25~75℃的溫度工作范圍內,針對-10~+10 A范圍內的電流采樣實現優于5%的采樣精度。Current sensing plays an important role in controlling,monitoring or protection functions of power systems.To meet the current sensing requirement of bidirectional DC/DC converters,a high-accuracy bidirectional current sensing circuit is proposed.The proposed current sensing circuit inserts a resistor in the path of the current to be sensed,while the current mirror and biased current circuit are introduced.Therefore,the bidirectional current can be expressed by positive voltage.By theoretical analysis and simulation,the sampling theory is analyzed and four biased current circuits are compared.At last,experimental results verified the proposed method.It is demonstrated that the proposed current sensing circuit can achi...

    標簽: 雙向DC電源 電流采樣

    上傳時間: 2022-04-22

    上傳用戶:

  • 基于AD2S1210的高精度RDC電路設計

    本文提出基于AD2S1210的旋變信號轉換電路,給出了具體的電路實現方法和配置方法.相比以往的RDC方案,本系統具有精度高,設計靈活,可靠性高等特點,可廣泛應用于各種伺服系統中.In this paper, the switching signal conversion circuit based on ADS1210 is proposed, and the specific circuit implementation and configuration method are given. Compared with the previous RDC scheme, this system has the characteristics of high precision, flexible design and high reliability, and can be widely used in various servo systems.

    標簽: ad2s1210

    上傳時間: 2022-05-04

    上傳用戶:

  • 基于TMS320F28335的超聲波流量計硬件原理圖+軟件源碼

    基于TMS320F28335的超聲波流量計硬件原理圖+軟件源碼本文以TMS320F28335 處理器為核心,設計一種用于管道流量測量的超聲波流量計。系統硬件由核心板,超聲波發射和接收電路,切換電路,超聲換能器,基于ADS805 的高速信號采集電路,人機交互以及電源等模塊構成。采用時差法進行管道流量測量,時差測量采用SCOT 加權的廣義互相關時延估計算法。本論文設計的超聲波流量計具有測量速度快、準確性好、成本低等優點。關鍵字:C2000,超聲波,流量,廣義互相關算法AbstractA kind of ultrasonic flowmeter using for the pipe flow measurement is designed based onTMS320F28335 in this paper. The system hardware consists of the following parts: the core board,ultrasonic signal transmitter and receiver circuits, switch circuit, ultrasonic transducer, signalacquisition circuit based on ADS805, human-computer interaction module and power supplymodule, etc. The system use the method of time difference for pipeline flow measurement and thetime difference is calculated by the time-delay algorithm of SCOT weighted generalizedcross-correlation. The ultrasonic flowmeter has the features of high testing speed, high precisionand low cost, etc.Keywords: C2000,Ultrasonic, Flow, Generalized Cross-Correlation Algorithm

    標簽: tms320f28335 超聲波流量計

    上傳時間: 2022-05-06

    上傳用戶:

  • 基于DSP28335的永磁同步電機調速系統設計

    基于DSP28335的永磁同步電機調速系統設計摘要(中英文)     本控制系統的設計是為了實現基于TMS320F28335的永磁同步電動機的調速系統,并把它引用到全電動注塑機當中。本系統使用SVPWM的控制方法,通過采樣電機電流和旋轉變壓器的位置信息,實現速度、電流雙閉環控制。通過TMS320F28335的硬件浮點處理核心,實現應用于永磁同步電機的浮點算法,去取代過去的定點算法,提高代碼效率。 Abstract: The control system is designed to realize TMS320F28335 based on the permanent magnet synchronous motor speed control system, and put it to quoting all electric of injection molding machine. The ystem of the control method used SVPWM, through the sampling motor current and rotating transformer 1.        引言1.1 設計背景及目的    本永磁同步電機調速系統是全電動注塑機的其中一個應用部分。全電動注塑機憑借著其節約能源、清潔、噪聲少、速度控制效果好、精度高、可重復性高、成本低等眾多優點,成為了當下高端注塑機發展的一個方向。    全電動注塑機的所有運動機構都采用交流伺服電動機驅動,一個穩定高效的永磁同步電動機驅動方案成為了全電動注塑機性能的一個總要部分。本次設計以適用于全電動注塑機的永磁同步電動機控制系統為目標進行設計,采用TI公司的TMS320F28335作為控制核心。憑借TMS320F28335高速的運算能力,適用于電動機控制的各種外設,以及TMS320F283XX特有的硬件浮點運算能力,進行永磁同步電動機的調速控制系統的設計。

    標簽: dsp28335 永磁同步電機

    上傳時間: 2022-05-08

    上傳用戶:

  • 血氧儀核心硬件電路設計及Multisim仿真

    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.

    標簽: multisim 光電二極管 濾波器

    上傳時間: 2022-05-12

    上傳用戶:

  • 基于滑模觀測器與分數階鎖相環的無傳感器PMSM矢量控制

    Abstract: A sliding mode observer and fractional-order phase-locked loop (FO-PLL) method is proposed for the sensorless speed control of a permanent magnet synchronous motor (PMSM).The saturation function is adopted in order to reduce the chattering phenomenon caused by the sliding mode observer. In this proposed FO-PLL, method, a regulable fractional order r is involved, which means that the FO-PLL provides an extra degree of freedom. In fact, the conventional phase-locked loop (PLL) applied in sensorless PMSM control can be seen as a special case of the proposed FO-PLL. By selecting a proper fractional order r a better performance may be achieved. The computer simulation results demonstrate the effectiveness of the proposed method.Key words: fractional calculus; fractional order phase-locked loop; sensorless control; sliding mode observer; permanent magnet synchronous motor; speed controll

    標簽: 滑模觀測器 傳感器 pmsm 矢量控制

    上傳時間: 2022-06-18

    上傳用戶:

  • VIP專區-嵌入式/單片機編程源碼精選合集系列(36)

    VIP專區-嵌入式/單片機編程源碼精選合集系列(36)資源包含以下內容:1. C51 I2C 驅動程序 含頭文件.2. arm芯 ucos 下的開發框架.3. c8051f***的程序源代碼.4. 新華龍單片機的flash用法.5. 用C8051F300設計鋰離子電池充電器的解決方案.6. c8051f系列單片機 用過采樣和求均值提高ADC分辨率.7. C6000指令集 是對C6000指令集的文檔.8. VxWorks 編程手冊 VxWorks 編程手冊.9. proteus 6.7及其破解(絕對好用).10. iic總線資料.11. 手機游戲禮包包 原理圖采用OrCad軟件或PowerPCB軟件打開 好玩的很  快來試試吧.12. 紅外測溫計 紅外線測溫   自動化設計 原理圖采用OrCad軟件或PowerPCB軟件打開 很完美.13. 9智能機器人禮包 智能機器人  單片機實現   功能齊全  運動流暢.14. 哈哈!終于找到了最新版本的UCGUI! 增加了不少的功能.15. Nios II是一個用戶可配置的通用RISC嵌入式處理器,這個文檔詳細介紹這個處理器的用法.16. 這是一個c語言寫的a/d轉換程序。利用i2c總線實現對24c02的存和取.17. 學DSP時.18. 漢字液晶子程 液晶屏分為4行*12列漢字.19. 這是一個c語言描述的8位led顯示的源代碼.20. We demonstrate a method for encoding and decoding the [24,12,8] extended binary Golay code using a s.21. Training embedded apps to process speech may be as easy as finding the right 8-bit micro. Don t let.22. The CC1000 RF transceiver is very easy to interface with a microcontroller. The chip is configured.23. One of the most important issues affecting the implementation of microcontroller software deals wi.24. AVR單片機開發中.25. 作基于日立公司superh系列微處理器嵌入式操作系統bootloader源代碼.26. touchsceen_test ├─ main.c C語言主源文件 ├─ AscII6x8.c Ascii字符6x8點陣顯示格式數據 ├─ lcd.c LCD顯示函數源文件 ├─.27. iic_test ├─ main.c C語言主源文件 ├─ iic.c IIC總線操作和24C040擦寫函數源文件 └─ iic.h IIC總線操作和24C040寫定義頭文件.28. Nexperia系統聲音實現的源碼.29. 89C516RD+的兩個AD轉換程序,89C51是22.1184MHZ,有64KB Flash 256B(DataRAM)+1024B(Ext.RAM)的性價比很高的MCU.30. 網上收集的VC多線程開發、嵌入式開發文檔.31. ucos-2在lpc2100上的移制例子。.32. mcf5307實驗源代碼.33. CPLD對DUSH的讀寫控制,LINUX下運行.解壓即可..34. HART協議由Rosemount公司開發且已向每個使用者開放HART協議采用標準的Bell 202頻移鍵控信號以1200波特通信以低電平加載于4mA~20mA模擬信號上.35. 中文MODBUS協議(完整版)涵蓋協議基本內容。不用我多說了吧!自己看好了。.36. μC_OS-II在Nios上的移植(共同學習ucosII).37. SST28F040讀寫源程序,C語言編寫,方便移植.38. 基于ARM 的PDA拼音輸入法源程序,c語言編寫,方便移植.39. Cypress公司的USB芯片開發資料.40. at91 sam 系列arm7單片機程序下工具.

    標簽: 自動變速器

    上傳時間: 2013-06-18

    上傳用戶:eeworm

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