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.
上傳時間： 2022-03-27
上傳用戶：
LED 線陣顯示裝置, 分為 LED 線性旋轉顯示主機和圖文錄入器兩部分。主機用直流電機帶動由紅綠 LED 組成的線陣旋轉, 同時線陣按照時序依次切換顯示狀態, 在固定區域利用視覺暫留效果形成 16×16 點陣, 用以顯示圖文;圖文錄入器用 HMI 觸控屏作為人機交互界面, 實現圖文錄入和回放功能。主機與圖文錄入器通過無線通信方式進行信息交互,可由圖文錄入器控制主機切換不同工作任務, 以及改變線陣顯示內容。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.
標簽： stc12c5a60s2 單片機 led
上傳時間： 2022-03-28
上傳用戶：jiabin
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,
上傳時間： 2022-03-31
上傳用戶：
高通藍牙芯片QCC5144 詳細規格手冊datasheet （共99頁）含各個接口說明，應用原理圖等信息。 QualcommTrueWireless? stereo earbuds (無線雙耳） Features（特點） ■ Qualifiedto Bluetooth v5.2 specification （藍牙協議標準5.2） ■ 120 MHz Qualcomm ? Kalimba ? audio DSP （120MHz 的音頻DSP處理器） ■ 32 MHz/80MHz Developer Processor for applications ■ Firmware Processor for system ■ Flexible QSPI flash programmable platform （可編程的QSPI外掛存儲器） ■ High-performance 24?bit audio interface （高性能的24位音頻接口） ■ Digital and analog microphone interfaces （含 數字 及模擬 MIC接口） ■ Flexible PIO controller and LED pins with PWM support ■ Serial interfaces: UART, Bit Serializer (I2C/SPI), USB 2.0 （支持串口，I2C， SPI，USB 接口） ■ Advanced audio algorithms （高級的音頻算法） ■ ActiveNoise Cancellation: （支持ANC 主動降噪功能） Hybrid, Feedforward, and Feedback modes, using Digital or Analog Mics, enabled using license keys available from Qualcomm? ■ Qualcomm ? aptX ? and aptX HD Audio （支持獨特的aptx 功能）
上傳時間： 2022-04-07
上傳用戶：
高通藍牙芯片QCC3040 詳細規格手冊datasheet （共96頁）QualcommTrueWireless? stereo earbuds (無線雙耳）Features（特點）■ Qualifiedto Bluetooth v5.2 specification （藍牙協議標準5.2）■ 120 MHz Qualcomm ? Kalimba ? audio DSP （120MHz 的音頻DSP處理器）■ 32 MHz Developer Processor for applications （32MH的 應用處理器）■ Firmware Processor for system■ Flexible QSPI flash programmable platform （可編程的QSPI外掛存儲器）■ High-performance 24?bit audio interface （高性能的24位音頻接口）■ Digital and analog microphone interfaces （含 數字 及模擬 MIC接口）■ Flexible PIO controller and LED pins with PWM support■ Serial interfaces: UART, Bit Serializer (I2C/SPI), USB 2.0 （支持串口，I2C， SPI，USB 接口）■ Advanced audio algorithms （高級的音頻算法）■ ActiveNoise Cancellation: （支持ANC 主動降噪功能）Hybrid, Feedforward, and Feedback modes, using Digitalor Analog Mics, enabled using license keys available from Qualcomm?■ Qualcomm ? aptX ? and aptX HD Audio （支持獨特的aptx 功能）
上傳時間： 2022-04-09
上傳用戶：slq1234567890
該步進電機驅動器又稱為EasyDriver，EasyDriver能夠為兩級步進電機提供大約每相750mA（兩極一共1.5A）的驅動。它默認設置為8步細分模式（所以如果你的電機是每圈200步，你使用EasyDriver時默認為每圈1600步），更多細分模式可以通過將MS1或MS2兩個接腳接地進行設置。這是一種基于Allegro A3967驅動芯片的細分斷路器。對于此設計的完整規格，請查閱A3967的參數表。它的最大每相電流從150mA到750mA。可以采用的最大驅動電壓大概是30V，其中包括板載5V的調壓器，所以只需要一個電源。質優價廉，這玩意兒只要十幾美元，比你自己制作電路板更便宜。步進電機驅動器設計特色：· A3967 Microstepping Driver· MS1 and MS2 pins broken out to change microstepping resolution to full, half, quarter and eighth steps (defaults to eighth)· Compatible with 4, 6, and 8 wire stepper motors of any voltage· Adjustable current control from 150mA/phase to 700mA/phase· Power supply range from 6V to 30V. The higher the voltage, the higher the torque at high speeds
上傳時間： 2022-04-27
上傳用戶：
為解決移相全橋電路驅動及相角控制問題,設計了一種數字控制的移相全橋驅動電路.以TPL521為光耦隔離、IR2110為柵極驅動芯片.由DSP產生PWM信號,經過光耦隔離和邏輯電路后送至IR2110進行相角控制.文章對IR2110驅動電路原理進行分析及參數進行設計,對TMS320F28335進行設置并給出部分代碼.實驗結果表明：通過TMS320F28335可產生的不同相角的PWM波形,滿足了移相全橋對不同相角控制的要求.In order to solve the problem of phase-shifted full-bridge circuit driving and phase angle control,a digitally controlled phaseshifted full-bridge driving circuit was designed. TPL521 optocoupler isolation,IR2110 gate driver chip. PWM signals are generated by the DSP and sent to the IR2110 for phase angle control after optocoupler isolation and logic circuits. This text carries on the analysis to the principle of IR2110 drive circuit and parameter design,set up and give out some code to TMS320F28335. The experimental results show that the PWM waveforms with different phase angles generated by TMS320F28335 can meet the requirements of phase-shifted full-bridge control for different phase angles.
上傳時間： 2022-05-03
上傳用戶：zhanglei193
以STM32F103C8T6為核心,設計了無刷直流電機控制器硬件電路。電路主要包括IR2310構成的PWM驅動電路、IRF3808構成的逆變電路、增量式旋轉編碼構成的速度反饋電路。控制器具有CAN和RS232通信接口,可與計算機或PLC構成速度或位置伺服系統。利用由xPC目標搭建的半實物仿真平臺對PI參數進行整定。測試了控制器的速度伺服響應性能,給定速度為2400rpm時,控制器響應時間為0.32s。實驗結果表明,系統工作可靠,穩定性好,響應速度快,可以滿足上肢康復機器人的機械臂速度控制性能要求。The hardware circuit of Brushless DC motor controller is designed by taking STM32F103C8T6 as the core,which mainly includes PWM driving circuits made up of IR2310,inverter circuit formed by IRF3808,speed feedback circuit composed of incremental rotary encoder and so on.Speed servo control system or position servo control system can be composed of BLDM controller with computer or PLC through CAN communication interface or RS232 serial communication interface.By using the hardware in the loop simulation platform built by xPC target,the PI parameters are set up.The Speed servo response performance of the controller is tested.When the speed is 2 400 rpm,the response time of the controller is 0...
上傳時間： 2022-05-07
上傳用戶：
基于DSP28035的高速永磁無刷直流電機驅動系統，包括論文和軟硬設計資料。摘要參賽作品為基于DSP28035的高速永磁無刷直流電機驅動系統。該系統以一臺額定轉速60 krpm的高速永磁無刷直流電機、交錯并聯的Buck電路以及全橋電路為硬件平臺，以DSP28035為控制核心，實現了調壓調速功能和基于坐標變換的無位置傳感器新技術。為實現該系統要求，本作品充分利用了DSP28035的資源例如：CLA模塊，模擬比較器、HPWM模塊以及AD轉換模塊等。AbstractThis work is the drive system for a high speed permanent magnet burshless dc motor based on DSP28035. The hardware platform consists of a BLDC motor(rated speed is 60000rpm), a Buck circuit and an inverter. Under the control of DSP28035, this system can achieve the goal of adjusting the motor’s speed with voltage and the function of sensorless control based on the coordinate transformation. By making full use of resources of the core, such as CLA, analog comparator, HPWM and AD converters, the whole system can meet the requirements.1 引言高速永磁無刷直流電機驅動系統由于基波頻率較高（一般在1kHZ以上），利用逆變橋斬波進行調速的控制方式通常會受到開關管開關頻率的限制，因此該系統多采用三相全橋前級加Buck電路進承擔調壓調速的功能，而三相全橋主要承擔邏輯換相的功能。然而，傳統Buck電路所需電感的體積較大，增加了系統的體積，降低了系統的功率密度。
上傳時間： 2022-05-08
上傳用戶：bluedrops
說明： CMSIS—DAP下載器源碼，在STM32F103C8T6上實現，支持cortex全系單片機下載調試(CMSIS-DAP downloader source code, implemented on STM32F103C8T6, support cortex full-system MCU download and debug)
上傳時間： 2022-05-17
上傳用戶：kingwide
