基于单片机的电子声音报温温度计设计_毕业设计.doc

第四届电子设计大赛（论 文） 基于单片机的电子声音报温温度计设计 摘要 环境温度的获取对工业、农业、商业都有很大的影响。传统的测温仪测量费时，准确度也较低，而数字温度计相比于传统温度计，具有读数速度快，测温范围广等优势，其输出温度采用数字显示，便于用户使用。 随着单片机技术的不断发展，单片机在日用电子产品中的应用越来越广泛，本设计数字温度计基于89C51单片机平台，使用数字测温传感器DS18B20，用数码管实现温度显示，利用DS18B20和一片89C51单片机即可构成一个简洁但功能强大的低电压温度测量系统，温度显示稳定，设定了定时语音自动播报温度，手动实时播报温度功能，温度达到预设上限启动继电器，以便驱动外接设备。 关键词：DS18B20；数码管显示；语音播报 Abstract The environment temperature acquisition has great effect on the industrial, agricultural, commercial. Thermometer to measure the traditional time-consuming, the accuracy is low, and compared with the traditional thermometer digital thermometer readings, with fast speed, wide temperature range and other advantages, digital output temperature display, user-friendly. With the continuous development of SCM technology, SCM applications in the field of electronic products is more and more widely, the design of digital thermometer based on 89C51 microcontroller platform, the use of digital temperature sensor DS18B20, with digital temperature display, is a simple but powerful low voltage temperature measurement system using DS18B20 and a 89C51 single chip computer. Stability, temperature display, set to automatically report temperature timing voice, manual real-time broadcast functions of temperature, the temperature reaches the preset limit starting relay, to drive an external equipment. Keywords: DS18B20; digital tube display; voice broadcast 目录 TOC \o 1-3 \h \z \u 1 2 3 4 5 6 7 8 9 不亮 - uchar code scan_con[4]={0x7f,0xbf,0xdf,0xef}; //列扫描控制字 uchar data temp_data[2]={0x00,0x00}; //读出温度暂放 uchar data display[5]={0x00,0x00,0x00,0x00,0x00}; //显示单元数据，共4个数据和一个运算暂用 void delay_ISD1420(unsigned int ms) //延时K*1ms,12.000mhz { int j; while(ms--) {for(j=0; j125; j++); } } void speak_isd1420(unsigned char addr) //语音播报子程序 addr播音地址 { ISD1420IO = addr; //写地址 playe = 1; playe = 0; //开始播音 delay_ISD1420(800); } void speak_temp(unsigned int temp_t) //语音播报温度子程序 { int digit1,digit