Smart Homes Chip Free Light Switch
Basim Abdul Kareem Farhan
Department of Computer Techniques Engineering, Imam Al-Kadhum University College (IKC), Baghdad, Iraq
Nawar Banwan Hassan
Department of Computer Techniques Engineering, Imam Al-Kadhum University College (IKC), Baghdad, Iraq
Wisam Ali Hasan
Department of Computer Techniques Engineering, Imam Al-Kadhum University College (IKC), Baghdad, Iraq
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http://doi.org/10.37648/ijps.v11i01.001
Abstract
Recent advancements in wireless sensor technology have surpassed the capabilities of conventional light switches, leading to the development of chipless RFID light switches (CLS). This novel CLS is designed to be passive, operate without batteries, and maintain portability while preserving the familiar tactile experience of physical buttons for controlling devices such as light bulbs.
The CLS architecture incorporates toggle switches connected to radiofrequency spiral resonators. These resonators passively communicate the switch status through activation or deactivation by manipulating the switches. To construct the CLS tag, an FR4 substrate with a thickness of 1 mm was utilized. This substrate comprised two identification resonators and two measurement resonators (MRs) for transmitting the status information.
Experimental findings demonstrated resonant frequencies of 1115 and 1220 MHz for the identification resonators, whereas the MRs exhibited 848 and 971 MHz frequencies. Successful toggling of the switches between the ON and OFF states resulted in the corresponding activation or deactivation of MRs.
Keywords: light switches; CLS; smart homes; wireless sensors; chipless
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