摘要随着时代的进步和科技的发展，人们对生活水平、生活质量的要求也越来越高，而温度检测也是一个很重要的因素，室内环境温度的过高或者过低都会引起类似缺氧、呼吸困难的不适感觉，所以我们需要及时获取当前的室内温度。70318

本次主要设计的是智能语音温度计，应用于检测室内温度。本文是以单片机AT89C51为核心，利用传感器来检测室内的温湿度，当检测到的温度超出设定的上下限值时，就会通过蜂鸣器和发光二极管发出报警信号给出提示；而当温度在正常范围内时，则会在液晶上显示正常的时间温度，此时还可以启动语音播报的功能，播报当前的实时温度。语音录放芯片选用的是ISD1420，它具有极高的保真度，录音效果好，而且经济实惠，性价比高。硬件电路完成之后，还会从仿真和实物调试时方面进行验证，以确保整个系统的正确性、实用性。

该论文有图26幅，表7个，参考文献24篇。

毕业论文关键词：AT89C51  单片机  温湿度  语音播报  

Intelligent Voice Thermometer Design

Abstract With the progress of the times and the development of science and technology, the requirement of human living standards and quality of life are also getting higher and higher. Furthermore, the temperature detection is a very important factor. Too high or too low indoor environmental temperature will cause a uncomfortable sense like lack of oxygen, breathing difficultly. Hence, we need to get the current indoor temperature. 

The main design of this paper is the intelligent voice thermometer used in the detection of indoor temperature. The core of this paper is AT89C51 microcontroller and uses sensors to detect the indoor temperature and humidity. When the detected temperature is higher than the limited value which has been set, microcontroller   will give out the alerting signal and provide the hint by the buzzer and light-emitting diode. When the temperature is in the normal range, it will display the normal time temperature on the liquid crystal. Meanwhile, microcontroller can also start the function of voice broadcast and broadcast the current real-time temperature. What   the voice recording chip selects is ISD1420, which has a very high fidelity, perfect recording effect and high cost performance, and is economical and practical. After   finishing the completion of the hardware circuit, it will also verify from the aspect of simulation and adjusting the material object in order to ensure the correctness and practicability of the whole system.

This paper has 26 figures, 7 tables and 24 references.

Key Words: AT89C51  SCM  Temperature and humidity  Voice broadcast  

目  录

摘 要 I

Abstract II

目 录 III

图清单 V

表清单 VI

1 绪论 1

1.1 研究背景及意义 1

1.2 研究现状 1

1.3 课题的主要研究内容 2

2 系统的总体设计 3

2.1 设计原理 3

2.2 方案选择 3

3 硬件设计 7

3.1 单片机模块 7

3.2 温度传感器模块 9

3.3 湿度传感器模块 11

3.4 液晶显示模块