Implementation of a Low Cost Home Energy Saver Based on OpenWrt
This paper introduces a system that can effectively save home energy by applying a small embedded system through remote control. We used a wireless router based on OpenWrt for the platform to develop an embedded system and a smart phone for the remote LED
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Abstract This paper introduces a system that can effectively save home energy by applying a small embedded system through remote control. We used a wireless router based on OpenWrt for the platform to develop an embedded system and a smart phone for the remote LED light control. The system was implemented by connecting a wireless router with an OS of OpenWrt installed and an interface board with an LED attached. The smart phone, which was the remote control device, was implemented by TCP/IP programming. The operation of the remote control system was verified by socket communication between the smart phone and the wireless router, and by USB communication between the wireless router and the interface board. Keywords OpenWrt
Wireless router Energy saving Smart phone
S.-H. Park ReSEAT Program, Korea Institute of Science and Technology Information, Daejeon, Korea e-mail: [email protected] H.-J. Shin C.-G. Kim (&) Department of Computer Science, Namseoul University, Cheonan, Korea e-mail: [email protected] H.-J. Shin e-mail: [email protected] M.-S. Kim Department of EECS, The Henry Samueli School of Engineering, University of California, Irvine, CA, USA e-mail: [email protected]
K. J. Kim and K.-Y. Chung (eds.), IT Convergence and Security 2012, Lecture Notes in Electrical Engineering 215, DOI: 10.1007/978-94-007-5860-5_91, Ó Springer Science+Business Media Dordrecht 2013
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1 Introduction Nowadays, wireless networks are everywhere and even in home 802.11 wireless networks are popular, avoiding wiring costs and providing connectivity for all rooms. Therefore, we can find low cost wireless router easily and they can be utilized for low cost embedded Linux platform using OpenWrt which targeted at the Linksys WRTG54 initially, but now targets many embedded wireless devices including equipment from Asus, D-Link, NetGear, Soekris, Viewsonic, and Linksys [1]. Primarily, OpenWrt is an operating system used on embedded devices to route network traffic. The main components are the Linux kernel, uClibc and BusyBox. All components have been optimized for size, to be small enough to fit the limited storage and memory available in home routers [2]. In this paper, we take advantage of the wireless router with OpenWrt as the home energy saver with remote control feature. Over the years, as the number of electric and electronics devices increase dramatically at home and in buildings, it was difficult to manage the waste of energy due to the inefficient light control and illumination distribution [3]. In addition, it is not practical to rely on users to directly control the light switch to save energy. To this end, this paper introduces a remote LED control system which is based on OpenWrt. The system was implemented by porting a wireless router to OpenWrt and by connecting an interface board to an LED. Also, the system communicated with a smart phone via socket communication to control the LED. This paper includes: introduction in Sect. 1, system components and operation in Sect. 2, e
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