毕业设计(论文)题目:基于 51 单片机家用温湿度语音播报系统设计姓 名 学院 名 专 业 指导老师 月 日 诚信承诺 本人__________申明,本论文及其讨论工作是由本人在导师指导下独立完成,论文所利用一切资料均符合论文著作要求,且在参考文件中列出。 署名: 日期:摘要本系统是一个基于单片机 AT89C51 语音播报系统设计,用来测量环境温湿度,整个设计系统分为 5 部分:单片机控制、DHT11 温湿度传感器、液晶显示、语音播报和键盘控制电路,整个设计是以 AT89C51 为关键,选择 DHT11 温湿度传感器,LED12864 液晶显示器实现。当测量温湿度超出设定温度上下限时,开启蜂鸣器和指示灯报警。语音录放选择集成块是 ISD1420 芯片,其保真度高,录音效果好,而且经济实惠。LCD 实行是 LCD12864,它含有功耗低、体积小、显示内容丰富、超薄轻巧等优点,应用越来越广泛。整个设计关键在于编程,因为其外围电路相对比较简单,实现轻易。在本论文中附带了软件实现步骤图和部分子程序和多种硬件电路图。关键词:液晶显示;语音播报; ISD1420ABSTRACTThis system is a design of the speech thermometer according to the microprocessor AT89C51,which is used to measure the environment temperature, The whole design system is divided into 5 parts: A microprocessor control, temperature sensor,the LCD display, the speech report and the keyboard control circuit, at the same time ,The whole design take AT89C51 as the core, choose to single bus digital temperature sensor DS18B20, DS1302 serial clock chip, RT1602 LCD monitor realization, LCD display the current date, time, weeks and temperature. When measuring temperature over set temperature fluctuation limit, start with light alarm buzzer. Temperature display stability, and temperature measurement error acuities 1℃, plus or minus temperature the decimal part retained two significant digits. Increased Celsius temperature conversion contrast with Fahrenheit and sets up a display function beep voice automatically broadcast time temperature, manual real-t...