项目编号：mcuclub-dz-319
设计简介：
项目名：环境监测
项目编号：mcuclub-dz-319
单片机类型：STC89C52
具体功能：
1、通过DHT11检测温湿度，当温度高于设置值，进行制冷；当温度低于设置值，进行加热；当湿度高于设置值，进行除湿；当湿度低于设置值，进行加湿
2、通过MQ-2检测烟雾值，当烟雾值大于设置最大值，进行声光报警，并启动通风
3、通过MQ-7检测CO值，当CO值大于设置最大值，进行声光报警，并启动通风
4、通过按键设置各阈值
5、通过LCD1602显示屏显示测量值
总字数：15188
实物链接：点击跳转
仿真链接：点击跳转
设计说明书链接：点击跳转
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基于单片机的温湿度烟雾CO测控系统设计
摘 要
在当今社会，人们对于室内环境的质量和安全性越来越关注。尤其是在家庭和办公场所，确保温度、湿度、空气质量以及烟雾和一氧化碳等有害气体的控制至关重要。室内环境的不适和安全问题可能对居民的健康和生活产生不利影响。因此，设计一种智能的温湿度、烟雾和CO测控系统具有重要的实际意义。
本论文介绍了一种基于STC89C52单片机的多功能温湿度、烟雾和CO测控系统的设计与实现。该系统旨在实现对环境参数的实时监测和自动控制，以提高室内环境的质量和安全性。系统包括温湿度传感器(DHT11)、烟雾传感器(MQ-2)、CO传感器(MQ-7)、按键控制和LCD1602显示屏。具体功能如下：首先，通过DHT11传感器，系统实时监测室内温度和湿度。当温度高于用户设置的阈值时，系统自动启动制冷装置，以维持舒适的温度；而当温度低于设置值时，系统启动加热装置以提供额外的热量。同时，当湿度高于设定值时，系统进行除湿操作，以确保湿度保持在理想范围内；当湿度低于设置值时，系统会启动加湿装置，以增加湿度。其次，通过MQ-2传感器，系统监测室内烟雾浓度。一旦检测到烟雾浓度超过用户设定的最大值，系统会触发声光报警，同时启动通风装置，以及时提醒用户和排除潜在的火灾风险。另外，通过MQ-7传感器，系统监测室内CO浓度。当CO浓度超过用户设定的最大值时，系统会同样触发声光报警和通风操作，以确保室内空气质量安全。此外，系统提供按键设置功能，使用户能够根据个人需求和环境条件自定义各种阈值和参数。最后，LCD1602显示屏用于实时显示温度、湿度、烟雾浓度、CO浓度和系统状态等测量值，使用户能够轻松监控室内环境情况。
综上所述，这一基于STC89C52单片机的温湿度、烟雾和CO测控系统不仅提供了高效的环境监测和控制功能，还提高了室内安全性，为用户提供了更加舒适和健康的生活环境。此设计在智能家居系统和室内空气质量管理领域具有广阔的应用前景。
关键词：智能家居系统；温湿度监测；空气质量管理；烟雾检测；一氧化碳
Abstract
In today’s society, people are increasingly concerned about the quality and safety of indoor environments, particularly in homes and workplaces. Ensuring control over parameters such as temperature, humidity, air quality, as well as the detection of harmful gases like smoke and carbon monoxide (CO) is crucial. Issues related to discomfort and safety in indoor environments can have adverse effects on the health and well-being of occupants. Therefore, the design of an intelligent temperature, humidity, smoke, and CO measurement and control system holds significant practical significance.This paper introduces the design and implementation of a multi-functional temperature, humidity, smoke, and CO measurement and control system based on the STC89C52 microcontroller. The system aims to provide real-time monitoring and automatic control of environmental parameters to enhance indoor environmental quality and safety. The system components include a DHT11 temperature and humidity sensor, an MQ-2 smoke sensor, an MQ-7 CO sensor, keypad controls, and an LCD1602 display screen. The specific functions of the system are as follows:Firstly, the DHT11 sensor is employed to continuously monitor indoor temperature and humidity. When the temperature exceeds user-defined thresholds, the system automatically activates the cooling system to maintain a comfortable temperature. Conversely, when the temperature falls below the set values, the heating system is engaged to provide additional warmth. Simultaneously, if humidity levels surpass the user-defined thresholds, the system initiates dehumidification to ensure humidity remains within the desired range. Conversely, when humidity is lower than the set values, the system activates the humidification system to increase moisture levels.Secondly, the MQ-2 sensor is utilized to monitor indoor smoke concentrations. Upon detecting smoke concentrations exceeding the user-defined maximum values, the system triggers both audio and visual alarms while initiating the ventilation system, promptly alerting users and mitigating potential fire hazards.Additionally, the MQ-7 sensor is employed to monitor indoor CO concentrations. When CO concentrations surpass the user-defined maximum values, the system similarly triggers audio and visual alarms and initiates the ventilation system, ensuring the safety of indoor air quality.Furthermore, the system provides keypad controls, allowing users to customize various thresholds and parameters based on their individual preferences and environmental conditions.Finally, the LCD1602 display screen offers real-time visualization of temperature, humidity, smoke concentration, CO concentration, and system status, facilitating easy monitoring of indoor environmental conditions.
In summary, this STC89C52 microcontroller-based temperature, humidity, smoke, and CO measurement and control system not only provides efficient environmental monitoring and control functions but also enhances indoor safety and comfort. This design has broad application prospects in the fields of smart home systems and indoor air quality management.
Keywords: Smart Home System; Temperature and Humidity Monitoring; Air Quality Management; Smoke Detection; Carbon Monoxide.
目 录基于单片机的温湿度烟雾CO测控系统设计
摘 要
Abstract
1.绪论
1.1 研究背景及其研究意义
1.2 国内外研究现状
1.3 研究目标
2.系统方案设计
2.1 整体方案设计
2.2 主要器件选型选择
2.2.1 主控芯片方案选择
2.2.2 温湿度检测模块方案选择
2.2.3 CO检测模块方案选择
2.2.4 烟雾检测模块方案选择
3.硬件电路设计
3.1 单片机最小系统
3.2 CO检测模块电路
3.3 温湿度模块电路
3.4 烟雾检测模块
3.5 显示模块电路
3.6 继电器模块电路
3.7 独立按键模块电路
3.8 声光报警模块电路
4 系统程序设计
4.1 编程软件介绍
4.2 系统主流程设计
4.3 独立按键
4.4 A/D模数转换子流程
4.5 LCD1602液晶显示子流程
4.6 温湿度检测模块子流程
5.实物调试
5.1 实物总体设计
5.2 温度测控实物测试
5.3 湿度测控实物测速
5.4 烟雾浓度测控实物测试
5.5 CO测控实物测试
总结与展望
参考文献
致谢
附录
附录A：原理图
附录B：PCB
附录C：程序