Wirelessly Powered an Alarm Clock ANENG HTC-1

Chaari, Mohamed Zied

doi:10.1109/icce-asia57006.2022.9954690

Cited by 2 publications

(1 citation statement)

References 21 publications

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“…The twin-patch antenna was engraved on an FR-4 substrate with thickness h = 1.6 mm, dielectric constant r = 4.6, and loss tangent δ = 0.02. This structure was influenced by the twin-patch antenna published in our previous work [40,41] and similar works [42]. This work aims to increase the bandwidth of this antenna without increasing its occupied area or fabrication costs.…”

Section: Twin-patch Antennamentioning

confidence: 99%

Energizing Emergency Exit Signs with Wireless Energy Transfer

Chaari¹,

Pereira²,

Abdelfatah³

et al. 2023

Energies

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Emergency exit lights in public buildings are necessary for safety and evacuation. International safety standards require such lighting in many public places, like airports, schools, malls, hospitals, and other spaces, to prevent human casualties in emergencies. Emergency exit lights have become an essential part of casualty reduction projects. They can pose several application problems, including fire safety concerns. The issue of providing a safe way and operating emergency exit lights along one side of a long path arises during an emergency. Many studies in this field consider the case in which emergency exit lights’ battery or main power fails. Power failures in dangerous situations such as fires or terrorist attacks make it difficult for people to escape. The lighting in open areas and stairwells during an emergency should be at least 2 lux. This work proposes an innovative technique for wirelessly powering emergency lights using microwave energy. Specifically, the study designed and fabricated a new wirelessly powered emergency lighting prototype. This prototype’s wireless power transfer (WPT) base comprises an RF/DC converter circuit and an RF microwave transmitter station. The device can harvest RF microwave energy to energize the emergency light. This research aimed to develop a compact device that captures maximum RF strength to power emergency lights. As a prototype, the proposed device was designed to provide sufficient microwave energy to power an emergency light at 3 W over a 62 m distance.

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Section: Twin-patch Antennamentioning

confidence: 99%