基于单片机的家用热水器控制器设计毕业设计论文.docx

1、基于单片机的家用热水器控制器设计毕业设计论文优秀论文 审核通过未经允许 切勿外传摘 要 我的毕业设计题目是：基于单片机的家用热水器控制器的设计。目前热水器已成为日常生活中不可缺少的家用电器，设计制造更实用、更方便、更安全、更节能的热水器是产品设计师和生产厂商不断追求的目标1。家用热水器具有体积小、使用安全、安装方便等优点。系统硬件电路设计包括加热控制、温度检测等电路的设计。电热水器是一种可供洗手间、厨房、浴室使用的家用电器，具有无污染、安全、保温时间长、使用方便等优点。随着人民生活水平的不断提高和我国电力工业的不断发展,电热水器得到不断普及。本文给出了一种基于51单片机实现的热水器电加热器的设

2、计方案。本文运用以AT89S51为控制核心的方法，提出了利用DS18B20来实现温度检测，并设计一个由继电器控制的电路，利用继电器来改变小电流控制的电路功率，构建了一个加热控制电路，从而得出了可以实现加热以及保温的结论。关键字：热水器，单片机，DS18B20温度检测器，继电器 Micro-controller of water AbstractMy graduation project topic is: the design of micro controller-based the daily life of and manufacture of more practical, more

3、convenient, safer, more energy-efficient water including circuit design.Electric water available toilet, kitchen, bathroom and , safe, long this paper, based on 51 single-chip design of the auxiliary this paper, AT89S51 as the control core, DS18B20 temperature detection, and to design a relay contro

4、l circuit, use the relay to change the small-current control circuit power to build a order to get conclusion of water be achieved and the keeping of temperature.Keywords： Water Instrumentation,2010(7):24-2710 李章勇,官方勇.太阳能热水器智能控制器研制J.2008年家用自动控制器技术国际研讨会,2008（11):11 苗红蕾.一款新型的智能家用电热水器J.邢台职业技术学院学报,2005(

5、11):60-6312 郁玉龙,赵宁卢,洪武.用AT89C51单片机设计智能家用电热水器J.实用电子制作,2007(10):33-3513 蔡满军,吴磊.智能温度控制器的设计J.自动化仪表,2010(10):68-7514 Huang Dinp jin,Fei Han，Li Liang，Zhu Yun zhou.Design for N+I Fault-tolerant Integrated Solar ControllerJ.AutomationInstrumentation,2010(10): 15 Surachai Panich.Development of Fuzzy Controll

6、er for Water Level in Stream Boiler TankJ.Journal of Computer Science,2010(11):附录一 原理图附录二 PCB图、附录三 仿真图附录四 程序*头文件*#include reg52. = P22; *定义LCD控制端口*bit flag=0;sbit p15 = P15; sbit p16 = P16; sbit p30 = P30; sbit p31 = P31; sbit k0 = P10; sbit k1 = P11; sbit k2 = P12; sbit k3 = P13; uchar table1 = che

7、n bei bei ;uchar table2 = TEMP:00.0C ;uchar table3 = SET TEMP: ;uchar table4 =H:60C L:40C;uchar table;uchar H = 60,L = 40;*1MS为单位的延时程序*void delay_1ms(uint x) uchar j; while(x-) for(j=0;j125;j+) ; *1602函数*void write_com(uint com) lcdrs=0; rw=0; P0=com; delay_1ms(1); lcden=1; delay_1ms(1); lcden=0;voi

8、d write_date(uint date) lcdrs=1; rw=0; P0=date; delay_1ms(1); lcden=1; delay_1ms(1); lcden=0;void lcd_init() lcden=0; write_com(0x38); write_com(0x0c); write_com(0x06); write_com(0x01); write_com(0x80);void set(uchar add,uchar dat) uchar shi,ge; shi = dat10; ge = dat%10; write_com(0x80+0x40+add); wr

9、ite_date(0x30+shi); write_date(0x30+ge);延时函数void delay(unsigned int i) while(i-);void keyscan() uchar i,j; write_com(0x80); for(i = 0;i16;i+) write_date(table3i); delay_1ms(2); write_com(0x80+0x40); for(i = 0;i0;i-) DQ = 0; 给脉冲信号 dat=1; DQ = 1; 给脉冲信号 if(DQ) dat|=0x80; delay(4); return(dat);写一个字节Writ

10、eOneChar(unsigned char dat) unsigned char i=0; for (i=8; i0; i-) DQ = 0; DQ = dat&0x01; delay(5); DQ = 1; dat=1; 读取温度ReadTemperature(void) unsigned char a=0; unsigned char b=0; unsigned int t=0; float tt=0; Init_DS18B20(); WriteOneChar(0xCC); 跳过读序号列号的操作 WriteOneChar(0x44); 启动温度转换 Init_DS18B20(); Wri

11、teOneChar(0xCC); 跳过读序号列号的操作 WriteOneChar(0xBE); 读取温度寄存器等（共可读9个寄存器） 前两个就是温度 a=ReadOneChar(); b=ReadOneChar(); t=b; t=8; t=t|a; tt=t*0.0625; 将温度的高位与低位合并 t= tt*10+0.5; 对结果进行4舍5入 return(t);void write_sfm(uchar add,uint date) uchar bai,shi,ge,dat; dat = date10; bai = date100; shi = date%10010; ge = date%

12、10; write_com(0x80+0x40+add); write_date(0x30+bai); write_date(0x30+shi); write_com(0x80+0x40+3+add); write_date(0x30+ge); if(LdatH) p15 = 0; p30 = 1; p31 = 0; if(datL) p16 = 0; p30 = 0; p31 = 1; void main() uint temp_buff; uchar i; p15 = 1; p16 = 1; p30 = 0; p31 = 0; lcd_init(); Init_DS18B20(); keyscan(); write_com(0x80); for(i = 0;i16;i+) write_date(table1i); delay_1ms(2); write_com(0x80+0x40); for(i = 0;i16;i+) write_date(table2i); delay_1ms(2); while(1) temp_buff=ReadTemperature(); *读取当前温度* write_sfm(7,temp_buff); delay_1ms(500);