Classroom air conditioner automatic control through online schedule

Classroom management is one of the challenge tasks of the staff in a faculty or school. Their duties are not only about arranging each classroom's schedule but also monitoring electrical appliances usage. An air conditioner is one of the electrical appliances which consume a lot of energy power, that might lead to energy waster and cause high utility bill expense. The solution could be done by replacing in-used air conditioners with new Wi-Fi air conditioners or using a smart product that can control an air conditioner through an application. Unfortunately, none of the smart products are designed for classroom while they allow only one air conditioner control through the application at a time. This research aims to create the system that allows a staff or user to real-time control infrared air conditioners in each classroom through the web-based classroom schedule. Raspberry Pi is selected because it is cheap, easy to implement, and can control infrared air conditioner in real-time. This research objectives are 1) to implement Raspberry Pi as an infrared remote control for operating any legacy air conditioner through the web application, 2) to implement the web service on the Raspberry Pi that will receive and forward commands from the web application to an air conditioner, 3) to implement the web application that provides classroom schedule in which manual or automatic air conditioner control can be done on it, and 4) to allow multiple air conditioners control through the same web application. After implementing and testing the system, we can conclude that this system can control legacy infrared air conditioners due to the fact that Raspberry Pi is able to learn each air conditioners remote control through the web application. The system also allows multiple air conditioner control through the web application at a time; this makes RACOS the only one system that can control many rooms' air conditioners through the web-based room schedule. While comparing to other smart products intends to control air conditioners through their applications, RACOS provides much reasonable price control device.课堂管理是院系或学校教职员工面临的挑战性工作任务之一。其工作职责不仅涵盖各教室的课表编排，还包括对用电设备的使用情况进行监控。空调作为高能耗用电设备之一，不仅会造成能源浪费，还会导致高额的水电费支出。对此，可通过将在用空调更换为新型Wi-Fi空调，或是使用可通过应用程序控制空调的智能产品来解决该问题。但遗憾的是，目前尚无针对教室场景设计的同类智能产品，且多数产品仅支持单次通过应用程序控制一台空调。 本研究旨在开发一套系统，使教职员工或用户能够基于网页端课表，对各教室内的红外空调进行实时控制。本研究选用树莓派（Raspberry Pi）作为控制终端，因其成本低廉、部署简便且可实现红外空调的实时控制。本研究的具体目标如下：1）将树莓派搭建为红外遥控器，通过网页应用程序操控任意旧式红外空调；2）在树莓派上部署网页服务，用于接收并转发来自网页应用的控制指令至空调设备；3）开发具备课表展示功能的网页应用，支持通过手动或自动模式完成空调控制；4）实现单网页应用同时控制多台空调的功能。 经系统搭建与测试后可得出结论：本系统可实现对旧式红外空调的控制，这是因为树莓派能够通过网页应用学习各空调的红外遥控信号。本系统同时支持单网页应用同时控制多台空调，这也使得RACOS成为首款可基于网页端房间课表控制多间教室空调的系统。相较于其他需通过专属应用控制空调的智能产品，RACOS的控制装置具备更高的性价比。