Computed Indoor Agriculture

An Ultraviolet C-Band LED device for disinfection of air, articles and indoor environment

Abstract

Background: Commonly used items like wallets, keys, and phones are both tricky and impractical to disinfect from the dangers of harmful microbes. This study demonstrates the efficacy of UVC-LED technology in creating an efficient, useful, and practical solution.

Methods: As a demonstration of the efficacy of the UVC-LED light (275 nm), a panel of UVC LEDs was fabricated and was driven with a constant current electronic driver. Staphylococcus aureus and Escherichia coli were placed on Petri dishes, and placed 38 cm away from the UVC-LED panel. UVC ux measured at the petri dishes was 0.093 mW/cm2 . The method involved exposing both the bacteria to UVC treatment for 4 and 8 minutes. For each petri dish, the number of colony forming units were compared before and after the treatment and compared to the control.

Results: A signi cant reduction in colony forming unit (cfu) counts was found in all samples for both sets of bacteria: 97.9% in the 4 minutes treat- ment(22.3 mJ/cm2), and 99.9% in the 8 minutes treatment(44.6 mJ/cm2).

Conclusion: UVC-LED technology o ers an e ective, simple and inexpen- sive approach for disinfection. Keywords: UV-LED, UVC, Disinfection, Sanitization, Biotechnology

Other Posts

J1939: Why having electric trucks and buses speak the same language is good for fleets

As fleet electrification picks up pace, many more automakers, or OEMs (original equipment manufacturers) are entering the scene, with new battery-electric offerings in the medium and heavy-duty space. Successful uptake of these EVs will require fleets to optimize how the vehicles are deployed and managed, both of which will require the vehicles to support data collection.

Electronics Still Thrives as a Hobby

Though the tools and components have changed radically since its hobbyist beginnings, the fascination and passion for electronics remains if the Maker Faire can serve as a judge.

ELECTRONIC COMPONENT SHORTAGES UPDATE — 2020 AND BEYOND

Electronic component shortages have been a hindrance on a booming electronics marketplace throughout 2018, 2019, and into 2020. While new orders roll in and production remains steady, there simply haven’t been enough capacitors, resistors and other parts to go around.