Most air quality monitors and lighting fixtures are currently separate, with air quality monitors typically being stand-alone devices that require separate power supplies and mounting locations. This not only occupies valuable space but also complicates their use and management. The emergence of air quality monitoring ceiling lights in smart homes aims to address this issue. However, many existing ceiling light designs do not consider heat dissipation, which can lead to performance issues, reduced lifespan, and even fire hazards. To tackle these challenges, this study presents the design of an intelligent ceiling lamp for air quality monitoring utilizing air duct technology. Equipped with a seven-in-one air quality sensor, the ceiling lamp collects indoor air data and performs real-time intelligent control and anomaly identification through a cloud-side-end synergy approach. The incorporation of air ducts enhances the sensitivity and accuracy of air quality monitoring, facilitates thermal convection, and improves heat dissipation efficiency, ultimately enhancing performance and longevity. Physical product design and field tests conducted on the cloud-side-end platform demonstrate that the ceiling lamp's air quality monitoring and anomaly identification have an average inference time of less than 1 millisecond with an identification accuracy of over 98%. Furthermore, the air duct design improves thermal efficiency by approximately 28%. Overall, this intelligent ceiling lamp represents a practical, efficient, and intelligent multi-functional indoor lighting solution.
This paper revisits the thorny issue of energy consumption and carbon emissions associated with the Ethereum blockchain, introducing the Ethereum network's strategic resolution for improving energy consumption and carbon footprint - the Merge. The main focus is transitioning from a Proof of Work (PoW) to a Proof of Stake (PoS) consensus algorithm. Theoretically, we dissect the feasibility of transitioning from PoW to PoS consensus algorithms in ameliorating energy efficiency and carbon emissions. Additionally, we have amassed and curated data from relevant research bodies about this issue. Both theoretical analyses and institutional data underscore that Ethereum has begun to reduce energy consumption and carbon emissions significantly.
Blockchain technology represented by cryptocurrencies has increasingly become the focus of social attention. The consensus protocol is the foundation for how the blockchain works. PoW, as the most widely used protocol, received more attention from researchers. This paper analyzes the defects of PoW, the most popular public chain consensus protocol in Blockchain, from five perspectives and points out the natural defects of PoW in high energy consumption, electronic waste, carbon footprint, expensive transaction fees, and centralization. This paper encourages the use of PoS and DPoS protocols instead of PoW protocols as they reduce the intensity of competition and may address the root cause of the aforementioned issues.
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