【正文】 畢業(yè)論文（設(shè)計(jì)）基于單片機(jī)的智能電源設(shè)計(jì)學(xué) 生 姓 名： 湯妍 指 導(dǎo) 教 師 ： 陳高泉 講師 專 業(yè) 名 稱 ： 電子信息工程 所 在 學(xué) 院 ： 信息工程學(xué)院 2022 年 6 月目 錄摘 要 .......................................................ⅠABSTRACT .................................................Ⅱ第一章 前言 ................................................1 研究目的和意義 ..........................................................................................................1 直流穩(wěn)壓電源的國內(nèi)外發(fā)展現(xiàn)狀以及發(fā)展方向 ......................................................1 課題研究方法 ..............................................................................................................3第二章 主要元器件介紹 ........................................4 AT89C51 單片機(jī) .........................................................................................................4 DAC0832 芯片 .............................................................................................................6 數(shù)碼管顯示原理 ..........................................................................................................8 ADC0809 芯片介紹 ...................................................................................................10 TD07(OP07) 低噪聲高精度運(yùn)算放大器介 ..............................................................12 74LS164 芯片介紹 .....................................................................................................12第三章 設(shè)計(jì)原理與硬件電路 ...................................14 智能穩(wěn)壓電源的整體電路框圖 ................................................................................14 內(nèi)部電路及原理分析 ................................................................................................14第四章 穩(wěn)壓電源的軟件設(shè)計(jì) ...................................24 軟件流程圖的設(shè)計(jì) ....................................................................................................24 程序運(yùn)行原理 ............................................................................................................24第五章 結(jié)論 .................................................28 數(shù)據(jù)測試與分析 ........................................................................................................28 結(jié)論 ............................................................................................................................28致 謝 .......................................................30參考文獻(xiàn) ....................................................31附錄 ........................................................32摘 要眾所周知，許多科學(xué)實(shí)驗(yàn)都離不開電，并且在這些實(shí)驗(yàn)中經(jīng)常會(huì)對通電時(shí)間、電壓高低、電流大小以及動(dòng)態(tài)指標(biāo)有著特殊的要求，因此，如果實(shí)驗(yàn)電源不僅具有良好的輸出質(zhì)量而且還具有多功能以及一定的智能化，那么就省去了許多不精確的人為操作，取而代之的是精確的微機(jī)控制，而我們所要做的就是在實(shí)驗(yàn)開始前對一些參數(shù)進(jìn)行預(yù)設(shè)。這將會(huì)給各個(gè)領(lǐng)域中的實(shí)驗(yàn)研究帶來不同程度的便捷與高效。因此，直流電源今后的發(fā)展目標(biāo)之一就是不僅要在性能上做到效率高、噪聲低、高次諧波低、既節(jié)能又不干擾環(huán)境，還要在功能上力求實(shí)現(xiàn)數(shù)控化、多功能化與智能化。 本文介紹了一種基于單片機(jī)的智能穩(wěn)壓電源的設(shè)計(jì)方案，其核心技術(shù)是通過單片機(jī)控制數(shù)模轉(zhuǎn)換來改變其后的穩(wěn)壓電源模塊的輸出。該系統(tǒng)由整流濾波、初步穩(wěn)壓部分、單片機(jī)控制部分、DA 轉(zhuǎn)換部分和顯示部分組成，該穩(wěn)壓電源能連續(xù)步進(jìn)可調(diào)，并且可實(shí)時(shí)顯示，彌補(bǔ)了傳統(tǒng)穩(wěn)壓電源的不足。 本設(shè)計(jì)研究的直流穩(wěn)壓電源主要是符合智能化、數(shù)字化以及模塊化的特點(diǎn)。智能化主要是指系統(tǒng)有可編程模塊可以對系統(tǒng)進(jìn)行智能控制。數(shù)字化主要是指系統(tǒng)輸出電壓通過 7 段數(shù)碼管顯示，并且可以通過按鍵對輸出電壓進(jìn)行連續(xù)步進(jìn)數(shù)字化調(diào)節(jié)。模塊化是指系統(tǒng)由各個(gè)相關(guān)模塊組成，提高了系統(tǒng)的可靠性。關(guān)鍵詞：單片機(jī)，穩(wěn)壓電源， ADC ， DAC， 過壓過流檢測 AbstractAs is known to all, many scientific experiments need electricity, and all these experiments are usually in a special demand of live time, magnitude of voltage and current as well as dynamic index 。Therefore, if power supply not only has good experimental power output quality but also the multifunction and intelligence, then it will save many imprecise artificial operation, with the precise microputer control at the same time , and what we should do is to preset some parameters before the start of the experiment。 This will provide the experimental in research fields with different degrees of convenience and efficiency。 Therefore, one goal of dc power of future development is not only the performance of high efficiency, low noise, high harmonics with low energy and an antiinterference environment but also to realize the function in the numerical control, more functional and intelligent。This paper introduces a singlechip microputerbased Intelligent Power Supply Design program, its core technology through the MCU to control digitaltoanalog converters to change the voltage regulator module subsequent output。 The system consists of rectifier filter preliminary regulator of the MCU control of the DAC and display ponents, the power supply can be continuously adjustable stepper, and can be realtime display, made up for the shortings of traditional voltage regulator power supply。This research mainly aims at the dc voltage stabilizer with intelligent, digital and modular characteristics。 Intelligence mainly refers to the system which has programmable module and can control system intelligently。 Digital mainly refers to the system output voltage by seven digital displayers, and give output voltage continuous stepping digital adjustment through the tube buttons。 Modular refers to the system which is made up with each related modules so that it can improve the reliability of the system。Key words： Single chip, Constant voltage power supply, ADC, DAC, Pressure flow testing第一章 前言 研究目的和意義直流穩(wěn)壓電源是電子技術(shù)常用的設(shè)備之一，廣泛