《基于单片机的数控稳压电源设计》10000字

基于单片机的数控稳压电源设计摘要近些年来随着我国的科技技术的不断发展以及我国国民经济的高速健康发展，人们对电子产品的要求也相应的变高。而电源部分的研发又是电子产品研发过程中一个炙手可热的领域。本文设计了一款基于单片机的数控稳压电源，该款数控稳压电源采用单片机作为控制芯片。具有稳定电压输出、电压可调、实时显示等功能。本设计包含硬件电路的设计和构建，软件电路的编程与调试以及稳压电源的总体调试和运行。硬件电路中采用按键电路设置数控稳压电源输出值,数控稳压电源的输出电压范围设为0~24V,输出功率为30W,设计以0.1V为按键步进值来进行输入电压上下调整,显示电路采用LCD1602实时显示输出电压值,采用单片机STC89C52进行采集数据并且输出数字量,而输出的数字量会经数模转换器TLC5615，转换后被称为输出模拟电压,然后采用双运算放大器LM358对其模拟电压进行隔离放大,放大后电压经过串联稳压电路进行稳压处理，最后输出的电压就是我们所预设的稳定直流的电压。软件程序部分在Kill5中进行主程序的软件编程，并对主程序和子程序源文件进行编译和调试，最终实现数控稳压电源的各项功能。经过最后的调试本次设计的数控稳压电源操作方便，工作稳定，可以正常实现其功能，实用价值高，适用于各种稳定的直流低电压场合供电。关键词：STC89C52；数控；可调；稳压电源；TLC5615目录第1章引言 附录附录A：原理图附录B：封装图附录C：仿真图附录D：实物图附录E：电子元器件表20K电阻1R11220uH电感1PL122pF瓷片电容2C1,C22K电阻1R133.9K电阻1R165K电位器1RP17824稳压芯片1IC59014三极管1Q1整流桥1BR1连接座2J1,J21N4007二极管1D1TLC5615芯片1IC8LCD1602液晶屏1LCD1红色LED3LD1,LD2,LD3LM2576芯片1PIC4LM358芯片1IC21K排阻1RL14芯插针1CN1STC89C52单片机1IC16x6按键6S6，S1，S2，S3，S4，S5散热器1TIP41三极管1Q2TL431基准芯片1IC3电路板1锡线1连线1附录F：系统程序#include<reg52.h>//头文件#include<intrins.h>#defineucharunsignedchar//宏定义#defineuintunsignedint//宏定义sbitSCLK=P2^1;//TLC5615时钟线sbitCS=P2^2;//TLC5615片选sbitDIN=P2^0;//TLC5615数据线sbitADDKEY=P1^0;sbitSUBKEY=P1^1;sbitS0V=P1^2;sbitS5V=P1^3;sbitS12V=P3^5;/**///LCD1602接口定义#define LCD_DATAP0 //P0低四位与LCD高四位（D4-D7）一一相对应相接sbit LCD_RS=P0^0; //数据指令sbit LCD_EN=P0^1; //使能端floatbase=0.0048828,TopVol=0,LowVol=0,PI=0,DO=0,RO=0;#defineClearLCD0x01#defineReturn0x02#defineEntryMode0x06#defineDisplayOn0x0c#defineFunctionSet0x28#defineDisplayOff0x08codeunsignedintVData[242]= //输入电压对应的DA值{0,4,8,12,16,20,24,28,31,35,39,43,47,51,55,59,63,67,71,75,79,83,87,91,94,98,102,106,110,114,118,122,126,130,134,138,142,146,150,154,157,161,165,169,173,177,181,185,189,193,197,201,205,209,213,217,220,224,228,232,236,240,244,248,252,256,260,264,268,272,276,280,283,287,291,295,299,303,307,311,315,319,323,327,331,335,339,342,346,350,354,358,362,366,370,374,378,382,386,390,394,398,402,406,409,413,417,421,425,429,433,437,441,445,449,453,457,461,464,468,472,476,480,484,488,492,496,500,504,508,512,516,520,523,526,531,535,539,543,547,551,555,559,563,567,571,575,578,582,586,590,594,598,602,606,610,614,618,622,628,630,634,638,642,645,649,653,657,661,665,669,673,677,681,685,689,693,697,701,704,708,712,716,720,724,728,732,736,740,744,748,752,756,760,764,767,771,775,779,783,787,791,792,799,803,807,811,815,819,823,827,831,834,838,842,846,850,854,858,862,866,870,874,878,882,886,889,893,897,901,905,909,913,917,921,925,929,933,937,941,945};/**///函数声明voidLCD_init(void); //液晶初始化voidLCD_en(void); //输入使能voidLCD_clr (void); //液晶清屏voidLCD_cmd(unsignedcharcmd); //指令输入voidLCD_dat(unsignedchardat); //数据输入voidLCD_delay(unsignedcharm,unsignedcharn); //延迟时间voidLCD_pos(unsignedcharx,unsignedchary); //液晶定位voidLCD_printc(unsignedcharx,unsignedchary,unsignedcharc); //字符定位输出voidLCD_prints(unsignedcharx,unsignedchary,unsignedchar*s); //字符串定位输出/**///延迟时间12us-130000usvoidLCD_delay(unsignedcharm,unsignedcharn){unsignedchartempm,tempn=n;do{tempm=m;while(--tempm);}while(--tempn);}/**///液晶初始化voidLCD_init(void){ LCD_cmd(0x28); LCD_en(); LCD_cmd(0x28); //四线显示 LCD_cmd(0x0c); //显示打开 LCD_cmd(0x01); //显示清屏 LCD_clr(); LCD_delay(2,249); //2000-2us LCD_delay(2,249); //2000-2us LCD_delay(2,249); //2000-2us}/**///输入使能voidLCD_en(void){ LCD_EN=1; LCD_delay(1,1); //12us LCD_delay(1,1); //12us LCD_delay(1,1); //12us LCD_EN=0; LCD_delay(1,1); //12us LCD_delay(1,1); //12us}/**///指令输入voidLCD_cmd(unsignedcharcmd){ unsignedchari=0,j=0; LCD_delay(15,1); //40us LCD_delay(15,1); //40us LCD_delay(15,1); //40us LCD_RS=0; //指令 LCD_delay(15,1); //40us LCD_delay(15,1); //40us i=LCD_DATA&0x0f; j=cmd&0xf0; LCD_DATA=j|i; //写高四位 LCD_en(); j=cmd<<4; //低四位移到高四位 LCD_DATA=j|i; LCD_en();}/**///数据输入voidLCD_dat(unsignedchardat){ unsignedchari=0,j=0; LCD_delay(15,1); //40us LCD_delay(15,1); //40us LCD_delay(15,1); //40us LCD_RS=1; //指令 LCD_delay(15,1); //40us LCD_delay(15,1); //40us i=LCD_DATA&0x0f; j=dat&0xf0; LCD_DATA=j|i; //写高四位 LCD_en(); j=dat<<4; //低四位移到高四位 LCD_DATA=j|i; LCD_en();}/**///液晶清屏voidLCD_clr(void) { LCD_cmd(0x01); LCD_delay(2,249); //2000-2us LCD_delay(2,249); //2000-2us LCD_delay(2,249); //2000-2us}/**///液晶定位voidLCD_pos(unsignedcharx,unsignedchary){ if(y) LCD_cmd(x|0xc0); else LCD_cmd(x|0x80);}/**///字符定位输出voidLCD_printc(unsignedcharx,unsignedchary,unsignedcharc){ LCD_pos(x,y); LCD_dat(c);}/**///字符串定位输出voidLCD_prints(unsignedcharx,unsignedchary,unsignedchar*s){ LCD_pos(x,y); while(*s) { LCD_dat(*s); s++; }}/*****************************************************/voidDAConvert(uintData)//DAC转换程序{uchari;Data<<=6;//数据左移6位，右边对齐SCLK=0;CS=0;for(i=0;i<12;i++)//{if(Data&0x8000) DIN=1;elseDIN=0;SCLK=1;Data<<=1;SCLK=0;}CS=1;}voiddelayms(uintms) //延时xx毫秒{ uchari; while(ms--) { for(i=0;i<120;i++); }}/*****************************************************/voidmain(void){ unsignedinti=0,temp=0; delayms(100);LCD_init(); LCD_clr(); LCD_prints(0,0,"SetVoltage"); LCD_prints(0,1,"5.0V"); LCD_printc(15,0,''); DAConvert(VData[50]); i=50; while(1) { if(ADDKEY==0) { delayms(20); if(ADDKEY==0) { if(i<240)i++; DAConvert(VData[i]); if(i<100) { LCD_printc(6,1,i/10+'0'); LCD_printc(7,1,'.'); LCD_printc(8,1,i%10+'0'); LCD_printc(9,1,''); } else { LCD_printc(6,1,i/100+'0'); LCD_printc(7,1,i%100/10+'0'); LCD_printc(8,1,'.'); LCD_printc(9,1,i%10+'0'); } } while(ADDKEY==0); } if(SUBKEY==0) { delayms(20); if(SUBKEY==0) { if(i>0)i--; DAConvert(VData[i]); if(i<100) { LCD_printc(6,1,i/10+'0'); LCD_printc(7,1,'.'); LCD_printc(8,1,i%10+'0'); LCD_printc(9,1,''); } else { LCD_printc(6,1,i/100+'0'); LCD_printc(7,1,i%100/10+'0'); LCD_printc(8,1,'.'); LCD_printc(9,1,i%10+'0'); } } while(SUBKEY==0); } if(S0V==0) { delayms(20); if(S0V==0) { i=0; DAConvert(VData[i]); if(i<100) { LCD_printc(6,1,i/10+'0'); LCD_printc(7,1,'.'); LCD_printc(8,1,i%10+'0'); LCD_printc(9,1,''); } else { LCD_printc(6,1,i/100+'0'); LCD_printc(7,1,i%100/10+'0'); LCD_printc(8,1,'.'); LCD_printc(9,1,i%10+'0'); } } while(S0V==0); } if(S5V==0) { delayms(20);