设计简介：
项目名：环境监测
项目编号：mcuclub-dz-143
单片机类型：STC89C52
具体功能：
1、通过DHT11检测温湿度，当温湿度不在设置的上下值之间，声光报警，并通过蓝牙发送提示信息“温度过高”、“温度过低”、“湿度过高”、“湿度过低”
2、通过MQ-135检测有害气体值，当有害气体值大于设置最大值，声光报警，并通过蓝牙发送提示信息“有害气体浓度过高”
3、通过GP2Y10检测PM2.5浓度，当PM2.5浓度大于设置最大值，声光报警，并通过蓝牙发送提示信息“PM2.5浓度过高”
4、通过按键可设置各阈值
5、通过LCD1602显示各测量数据
6、通过蓝牙，可将所有监测数据发送到手机端
总字数：17381
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基于单片机的多功能环境监测与报警系统设计与实现
摘要
本论文旨在设计和实现一款基于STC89C52单片机的多功能环境监测与报警系统。该系统通过集成多种传感器，能够实时监测室内温湿度、有害气体浓度和PM2.5浓度等关键环境参数。一旦监测数值超出事先设定的安全阈值，系统将自动触发声光报警，并利用蓝牙通信功能向用户的手机发送相应的预警信息，提示用户环境异常。系统的硬件设计涵盖了多个方面：温湿度传感器DHT11、有害气体传感器MQ-135、PM2.5传感器GP2Y10等的接口设计和数据采集，LCD1602的数据显示，蓝牙模块的通信接口，以及按键用于阈值设置。在软件设计方面，系统实现了针对不同传感器的监测与报警算法，允许用户通过按键进行阈值设定，并在LCD1602上实时显示监测数据。蓝牙通信协议的设计使系统能够与用户的手机进行无线通信，将实时监测数据和预警信息传输到手机端，让用户能够及时了解室内环境状况。系统的实验结果验证了其稳定性和可靠性，同时测试了温湿度、有害气体浓度以及PM2.5浓度的监测与报警功能，以及阈值设置和蓝牙通信功能。本论文的研究成果对于室内环境监测和安全预警领域具有实际应用价值，为用户提供了一个方便有效的手段来监测和管理室内环境质量，为健康和舒适的居住环境提供保障。
关键词：单片机；家居无线测控系统；DHT11；MQ-2；声光报警；LCD1602；蓝牙通信
Abstract
This paper aims to design and implement a versatile environment monitoring and alarm system based on the STC89C52 microcontroller. The system integrates various sensors to achieve real-time monitoring of indoor temperature, humidity, harmful gas concentration, and PM2.5 concentration, among other critical environmental parameters. When monitored values exceed pre-set safety thresholds, the system automatically triggers audio-visual alarms and utilizes Bluetooth communication to send corresponding warning messages to the user’s mobile phone, alerting them of abnormal environmental conditions.The hardware design of the system encompasses multiple aspects, including interface design and data acquisition for sensors such as the DHT11 temperature and humidity sensor, the MQ-135 harmful gas sensor, and the GP2Y10 PM2.5 sensor. Additionally, the hardware includes the LCD1602 for data display, the Bluetooth module for communication, and buttons for threshold configuration. In terms of software design, the system employs monitoring and alarm algorithms tailored to each sensor type. Users can set threshold values through buttons and view real-time monitoring data on the LCD1602 display.The design of the Bluetooth communication protocol facilitates wireless communication between the system and the user’s mobile phone. This enables the transmission of real-time monitoring data and warning messages to the mobile device, allowing users to promptly become aware of indoor environmental conditions. Experimental results demonstrate the system’s stability and reliability, validating the functionality of monitoring and alarming for temperature, humidity, harmful gas concentration, and PM2.5 concentration. Furthermore, the feasibility of threshold configuration and Bluetooth communication is confirmed.The research outcomes of this paper hold practical value in the field of indoor environment monitoring and safety alert systems. The proposed system offers a convenient and effective means for users to monitor and manage indoor environmental quality, thus ensuring a healthy and comfortable living environment.
Keywords: Microcontroller; Home Wireless Measurement and Control System; DHT11; MQ-135; Audio-Visual Alarm; LCD1602; Bluetooth Communication.
目录
基于单片机的多功能环境监测与报警系统设计与实现
摘要
Abstract
第一章 绪论
第二章 设计思路与方案选择
第三章 硬件设计
第四章 系统程序设计
第五章 仿真测试
第六章 实物测试
第七章 总结与展望
致谢
参考文献
附录