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Energy Smart Room

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  1. Base Station/RFID Reader Doorway Entry Sensor Sensor Motes Energy Smart Room Department of Electrical and Systems Engineering System Overview Base Station Software Overview • Design: The Energy Smart Room is meant for simple set up in any room featuring one entry way. This means offices, conference rooms, studio apartments, bedrooms, etc.The Energy Smart Room is designed to interface with several common heating, cooling, and lighting appliances. It can be used with just heating, just cooling, just lighting, or any combination of the three, depending on what best suits the environment and needs of the user. Appliances it is designed to interface with include lamps, overhead lights with traditional wall light switches, window blinds, space heaters, and window air conditioning units. Other integrated heating or lighting units will need to have special solutions designed for them, and may not be compatible with the Energy Smart Room setup. However, if a room for example has integrated heating or cooling solutions already, the system could still be used just for lighting. • Devices: The Energy Smart Room features several devices that make it work. • A user recognition system will be installed by the doorway to the room. This will sense when a user enters or exits the room. It will also incorporate an RFID unit that will sense if a user is carrying an RFID card, and if so, use their own personal heating and lighting preferences rather than default settings. This is powered through a traditional wall outlet. • Two to three sensors will be placed across the room. These units are small and battery powered. They will monitor the heating and lighting conditions in the room and wirelessly send this data. • A base stationunit will be used to control the overall system. This will be the main processing component of the system, and where users set their desired temperature and lighting settings. It also can be used to set which users have priority. In addition, the system will keep track of time, so that heating or lighting conditions can be turned down when a user is sleeping or at work. • Finally, output devices will be incorporated into the output devices previously specified in order to control the temperature and lighting. They will also relay power consumption data back to the base station for supported output devices, so that when possible, the base station can determine the most energy efficient way to reach the desired settings. The base station is an HC11 microcontroller programmed to do most of the processing within the system. It is connected to a mote, the doorway entry sensors, and controls the power supplied to the RFID reader. The program controls the operation of almost the entire system by sending commands to the motes indicating whether outputs should be turned on or off. In addition, it takes user commands in directly through a keypad and displays the current settings and conditions on an LED display. A basic block diagram of the operation of the code is shown below: ABSTRACT This project focuses on reducing energy consumption and increasing personal comfort by monitoring the conditions present in a room and adjusting the room’s environment to meet people’s desires. The goal of the project is to create a system to implement in a room, which can sense the presence of a specific person or a general person, and adjust lighting and temperature to fit the needs of those people. This project was done using radio frequency identification to determine specific people and adjust the room to their specific conditions. There are also motion sensors to detect people who enter the room but do not have a radio frequency identification tag. In this project wireless sensor networks, or motes, are used to determine the current conditions of the room, and report these conditions to a base station. The base station analyzes the information from the motes, and sends out signals to various operators in the room, to change the room conditions. The operators control the lights, blinds, and heating or cooling devices. The main objectives of this project are to conserve energy and make the system affordable and easy to install for the average person. Hardware Components PRESENTERS The HC11 microcontroller: This is the base station of the system, and provides the main processing power. It is connected to the motes, the power supply for the RFID reader, and the doorway entry sensors PRESENTERS Charlie Bursch EE ’07 Gregory Klossner EE ’07 Tony Lombardo EE ’07 GROUP 16 MICAZ mote board: This is one of the main communication boards in the mote system. It can connect to sensor boards or output boards. On the output boards, signals can be connected to relays or other circuits to turn outputs on or off, or adjust their settings ADVISOR Dr. Insup Lee - CIS Mote Sensor Board: These take in the temperature and light readings from the room and communicate them to a MICAZ communication board. These signals are then sent on through the mote network to the base station. SPECIAL THANKS TO Sid Deliwala Philip D. Farnum GROUP 9 DEMO DATE RFID Reader: This senses RFID tags on any users entering or exiting the room. If these users are carrying an RFID tag, they will be identified by the reader. Their identity will be sent to the base station so their person settings can be applied Thursday April 19, 2007 GROUP 9