STC89C58单片机蓝牙的温湿度多点测量系统设计+电路图
毕业论文关键词：STC89C58 温湿度测量 蓝牙传输
Multi-point Temperature and Humidity Measuring System Based on Bluetooth
Abstract：In people's daily production and life, the monitoring of temperature and humidity is becoming more and more important. For example, in the greenhouse to produce higher economic benefits for the people, showing the film screening room, computer room and other control operation. Temperature and humidity monitoring way past basically rely on people to sweep through the handheld thermometer, mercury thermometer to observe, it not only waste a lot of time and manpower, and error. The design is based on the temperature and humidity of Bluetooth multi points measuring system. The design of the system consists of STC89C58 microcontroller, HC-06 Bluetooth module, LCD12864 LCD display, DHT11 temperature and humidity sensors, real-time clock chip DS1302, buzzer and keys. The measurement accuracy of DHT11 is used to measure the temperature and humidity is high. DS1302 real time clock chip can provide power-off protection, provide accurate time. In the design of the key can modify the time and the temperature and humidity limit. The most important in the design of the STC89C58 microcontroller, through the comparison of the sensor for transmission over the upper limit and to control the buzzer and LED lamp. Temperature and humidity sensor measurements of temperature and humidity on the LCD display and transmitted to the mobile phone through the Bluetooth module. The design of low cost, simple operation, stable operation and accurate and reliable. With a high promotional value.
Keyword：STC89C52 Temperature and humidity measurements Bluetooth
目录
1 绪论 .1
1.1 前言 .1
1.2 课题来源 ..2
1.3 国内外测量温湿度现状趋势及挑战 .2
1.4 研究的目的、意义及主要内容 ...3
2 单片机温湿度测量系统总体思路 ..4
2.1 基于蓝牙多点测温湿系统的功能设计 .4
2.2 基于蓝牙传输多点测温湿系统的设计思路及流程 5
3 系统硬件电路的设计 ...6
3.1 控制模块的设计 6
3.2 温湿度传感器设计 7
3.2.1 DHT11的简介 8
3.3.2 引脚说明 8
3.3 蓝牙传输模块设计 9
3.4 LED显示电路设计.. 10
3.4.1 12864液晶显示屏工作范围与显示特性 . 10
3.4.2 12864液晶显示屏引脚说明 .. 11
3.5 按键电路设计 . 12
3.6 报警电路设计 . 12
4 系统软件部分的设计 . 13
4.1 系统工作流程 ... 13
4.2 开发软件keil的使用 . 17
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