基于msp430單片機數控恒流源的設計(已修改)
2025-06-08 15:13 本頁面
【正文】 I 基于 MSP430 單片機數控恒流源的設計 摘 要 本直流穩(wěn)流電源，利用反激式開關穩(wěn)壓電源供應整個系統(tǒng)的電能，在此基礎上，以MSP430F1232 超低功耗單片機作為主控核心，由 12 位 DAC851 16位 AD7790、可調穩(wěn)壓芯片 LM317 實現參考電壓的設定及監(jiān)測電流采樣電阻兩端的微弱電壓經集成運放 OP07 放大若干倍的電流轉電壓值。通過三個獨立按鍵和一塊四位共陽極數碼管共同完成，用戶對本系統(tǒng)的設定和交互。簡言之，本系統(tǒng)在負載一定變化范圍內實現了恒流輸出，即通過控制加載于負載上的輸出電壓和采樣輸出的電流 與給定電流值得比較達到穩(wěn)流。 關鍵字：反激式開關穩(wěn)壓電源；恒流源； MSP430F1232；電壓、電流采樣電路 Stabilized DC Power Supply ABSTRACT The stabilized DC power supply, the use of power flyback switching regulator power supply of the entire system, on this basis, to MSP430F1232 ultralow power MCU as the master core, from 12 DAC8512, 16 位 AD7790, adjustable regulator LM317 chip reference voltage to achieve weak voltage setting and monitoring the current sampling resistor at both ends of the integrated operational amplifier OP07 amplified by several times the currenttovoltage value. Through three separate buttons and a total of four digital tube anode jointly pleted, the user setting and interaction of the system. Briefly, the present system must change over the load range to achieve a constant output, by controlling the output voltage and the load current is sampled at the output of the load current with a given steady flow reaches worth paring. Keyword: Flyback switching power supply。 Constant current source。 MSP430F1232。 Voltage and current sampling circuit II 目 錄 目 錄 ................................................................................................................................................ II 第一章 引言 .................................................................................................................................. 1 第二章 方案設計 .......................................................................................................................... 1 .......................................................................................................................... 1 .......................................................................................................................... 2 .................................................................................................... 2 第三章 系統(tǒng)硬件與軟件設計 ......
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