ESP8266实现低成本MQTT协议在智能家居中的应用

需积分: 0 54 浏览量更新于2024-08-04 收藏 23KB DOCX 举报

"这篇文档介绍了一种利用ESP8266实现低成本MQTT协议的方法，应用于智能家居的物联网云框架。物联网(IoT)是技术变革的重要推动力，它依赖于具有传感器功能、充足电源和互联网连接的设备。在这种背景下，轻量级、低成本和低带宽消耗的通信协议如MQTT显得尤为重要。论文中展示了如何使用ESP8266 WiFi模块作为客户端，与智能手机和笔记本电脑等其他客户端进行基于MQTT协议的通信，以监控环境条件并根据光线强度控制8*8 NeoPixel矩阵的亮度。使用的服务器（即MQTT代理或broker）是adafruit.io。" 物联网(IoT)是一种将物理世界中的各种设备联网的技术，允许它们之间交换数据和执行特定操作。在这个领域，ESP8266是一个非常受欢迎的芯片，因其内置WiFi功能和相对低廉的价格而成为许多DIY项目和商业应用的理想选择。在本文中，ESP8266被用作物联网节点，通过连接DHT11温湿度传感器和LDR光敏电阻来监测环境的温度、湿度和光照强度。 MQTT（Message Queuing Telemetry Transport）是一种发布/订阅模式的轻量级通讯协议，专为低带宽、高延迟或不稳定网络设计。它适合资源有限的设备，如ESP8266，因为它的开销小且易于实现。MQTT协议允许客户端（如ESP8266）订阅特定的主题，当有新数据发布到这些主题时，客户端会收到通知。在本文的场景中，ESP8266作为客户端发布传感器数据，并可能订阅来自其他设备（如手机或笔记本电脑）的命令，以调整LED矩阵的亮度。 adafruit.io是一个流行的物联网云服务，提供MQTT服务器功能。用户可以创建不同的“feed”来发布和接收数据，使得设备可以方便地与其他设备或服务交互。在本例中，adafruit.io作为MQTT broker，处理ESP8266和其他客户端之间的通信。通过这样的系统，可以实现远程监控和控制家庭环境。例如，根据光照条件自动调整室内照明，或者根据温度和湿度控制空调或加湿器。这种解决方案不仅成本效益高，而且由于MQTT的高效特性，即使在不稳定或网络资源有限的环境中也能保持可靠的通信。此外，MQTT的可扩展性使其能够适应各种规模的物联网应用，从小型家庭项目到大型企业级部署。

Internet of Things Cloud Framework for Smart Homes

Abstract—Technology is great growling engine of the change and Internet of Things (IoT) is the

backbone of such revolutionary engines. Basically, in the real world the things having sensor capability,

sufficient power supply and connectivity to internet makes field like Internet of Things (IoT) possible. For

such rapid growing technology, it is the necessity to have very light, inexpensive and minimum bandwidth

protocol like Message Queuing Telemetry Transport (MQTT) Protocol. Because of such non-established

protocol it is easy for the clients to publish or/and subscribe the desire topic through the host acting as

server of the network also known to be the broker. In this paper, it is shown that communication between

the low power ESP8266WiFi as client with the clients on smartphones and laptop using an MQTT protocol

becomes easier and more reliable. The WiFi enabled ESP8266 board interfaces with DHT11 sensor and

LDR sensor to monitor the ambient condition and according to the light intensity level the brightness level

of 8*8 Neopixel matrix is controlled. The adafruit.io is the MQTT server i.e, broker which also provides the

facility of monitoring system through the dashboard. The clients on smartphone and laptop subscribes to

the topics of temperature, humidity and light intensity level gets the respective update. The main objective

of the paper is to implement the idea for the smart home appliance, street light system for the smart cities,

fire alert systems, whether monitoring system and so.

I. INTRODUCTION

It is the human race to enhance the technology everyday everywhere. One of the simplest clue is to

make the environment around us wireless rather than the bulkier wired one. In our home, the power outlet

uses analog switches and bulkier circuitry within it, in addition there are chances of getting it damaged with

the time and need a replacement plus the outlet is kept in specific height in order to avoid shock to children.

What if all these problem can be resolved with the simple design and implementation using a low power,

low cost technology wherein the home lights are being controlled automatically with respect to ambient

light conditions in addition with the temperature and humidity monitoring. Also there can be provision for

user to make a decision to let the system turned ON and OFF remotely. With each user having its own

username and key the system can be made secured and the user will able to control the system anywhere in

the world having the internet connectivity.

The Smart cities is one of the major application of the Internet of Things (IoT) technology. In order to

make the cities smart, it is important to apply smart solutions to the infrastructure and services to make it

better plan by reducing the manpower, more throughput with less investments, lower cost for

redevelopment and retrofitting[9]. The street lights for such smart cities is one of the main concern and

requires system which can able to control street lights automatically so as to match the brightness level of

street lights with an environment condition providing the information of ambient light intensity level along

with the temperature, humidity of surroundings.

下载后可阅读完整内容，剩余4页未读，立即下载

陈熙昊

粉丝: 26
资源: 318

ESP8266实现低成本MQTT协议在智能家居中的应用

MQTT-ESP8266.zip

ESP8266通过MQTT协议连接OneNet云.zip

ESP8266WiFi模块与MQTT协议的结合应用

利用MQTT协议实现stm32与esp8266的通信

利用MQTT实现STM32与多个esp8266设备的分布式通信

ESP8266 Wi-Fi 数据传输：HTTP、MQTT 和 WebSocket，掌握物联网通信的奥秘

ESP8266远程固件更新方案探索

MQTT ESP8266烧录

mqtt和esp8266怎么穿数据到云平台

MQTT协议的ESP8266如何测试

最新资源