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Divya, G.
- Design of Various PFD and Charge-Pump Architectures for a PLL-A Survey
Abstract Views :171 |
PDF Views:4
Authors
Affiliations
1 Tamilnadu College of Engineering, Coimbatore, IN
2 Department-ECE, Sri Krishna College of Engineering & Technology, Coimbatore, IN
3 Anna University, Coimbatore, IN
1 Tamilnadu College of Engineering, Coimbatore, IN
2 Department-ECE, Sri Krishna College of Engineering & Technology, Coimbatore, IN
3 Anna University, Coimbatore, IN
Source
Digital Signal Processing, Vol 5, No 8 (2013), Pagination: 284-287Abstract
With the advent of portable and high-density microelectronic devices, the power dissipation of very large scale integrated (VLSI) circuits is becoming a critical concern. Accurate and efficient power estimation during the design phase is required in order to meet the power specifications without a costly redesign process. This paper presents the survey of the performance of several architectures for the Phase Frequency Detector (PFD) and Charge Pump (CP). PFD plays a significant role on the whole Phase Locked Loop system (PLL). PFD has an advantageous function over the Phase detector (PD) and Frequency detector (FD) by detecting phase and frequency detection at a time. The performance of charge pumps depends heavily on the ability to efficiently generate high voltages on-chip while meeting stringent power and area requirements.Keywords
Phase Frequency Detector, Charge Pump.
- Real-Time Information Display System for Indian Railways Using RFID
Abstract Views :212 |
PDF Views:7
The proposed system employs broadcasting of station information from a unit at station to the unit in train engine wirelessly upon the entry of that train to a station. The engine unit then updates this information in the LED units at each coach in real time.
Authors
Affiliations
1 Dept. of Information Technology, Adi Shankara Institute of Engineering and Technology, Kerala, IN
2 Dept. of Information Technology, Information Technology, Adi Shankara Institute of Engineering and Technology, Kerala, IN
1 Dept. of Information Technology, Adi Shankara Institute of Engineering and Technology, Kerala, IN
2 Dept. of Information Technology, Information Technology, Adi Shankara Institute of Engineering and Technology, Kerala, IN
Source
Journal of Network and Information Security, Vol 5, No 2 (2017), Pagination: 23-25Abstract
Passengers travelling in night trains usually wake up early to know which station the train currently passed by. During early morning hours or at night the visibility of outside railway station boards at stations are not clear from travelling trains. Passengers are often frustrated with wanting to know the details regarding the station. The proposed idea is to develop an information system using LED boards in coaches for providing real time information regarding the current station passed by. This cost effective approach enhances user experience by not disturbing the passenger’s sleep in night trains as they need to wake up much early to avoid their destination been passed. Currently travellers rely on wakeup call service using 139 services or manually search the place using other map services using GPS. Map services by Google rely completely on availability of Internet services like 3G and above networks which is not a reliable network during train travels and consumes huge battery power and packet data.The proposed system employs broadcasting of station information from a unit at station to the unit in train engine wirelessly upon the entry of that train to a station. The engine unit then updates this information in the LED units at each coach in real time.
Keywords
Display Systems, Indian Railways, RFID.References
- https://en.wikipedia.org/wiki/Radio-frequency_identification
- https://www.impinj.com/about-rfid/types-of-rfid-systems/
- http://www.rfidjournal.com/
- https://www.techwalla.com/articles/advantages-disadvantages-of-rfid
- https://www.buzzle.com/articles/advantages-and-disadvantages-of-rfid-technology.html
- R. Ramesh, G. Divya, D. Divya, M. K. Kurian, and V. Vishnuprabha, “Big data sentiment analysis using hadoop,” International Journal for Innovative Research in Science & Technology, vol. 1, no. 11.
- Quarantine Tracker
Abstract Views :105 |
PDF Views:0
Authors
Affiliations
1 Department of Information Technology, Adi Shankara Institute of Engineering and Technology, Kalady, Kerala, IN
2 Department of Computer Science and Engineering, Adi Shankara Institute of Engineering and Technology Kalady, Kerala, IN
1 Department of Information Technology, Adi Shankara Institute of Engineering and Technology, Kalady, Kerala, IN
2 Department of Computer Science and Engineering, Adi Shankara Institute of Engineering and Technology Kalady, Kerala, IN
Source
International Journal of Business Analytics and Intelligence, Vol 9, No 1&2 (2021), Pagination: 24-33Abstract
As we all know, the world is still facing a massive number of deaths due to the COVID-19 pandemic. Although governments all over the world have taken measures to slow down the spread of the virus, the number of deaths keep increasing on a large scale. In order to prevent this situation, geofencing technology is used to efficiently track the people under quarantine. Geofencing is a technology in which an app or a software uses Wi-Fi, GPS, or cellular data to trigger an alert whenever a person under quarantine exits the geofence. In this project, we are using the Wi-Fi range of the user’s home location to detect whether the user exits the geofence or not. Geofence is set up by using the exact latitude and longitude of the quarantined individual’s home location, which creates a virtual circular or rectangular boundary around the user’s home location. Whenever the user exits the boundary, an alert will be sent to the server side of the application, which in turn helps the health officials to take the necessary action against the user.Keywords
Alert, COVID, Geofence, Home, Quarantine, Track, User, Watch.References
- Braithwaite, I., Callender, T., Bullock, M., & Aldridge, R. (2020). Automated and semi-automated contact tracing: Protocol for a rapid review of available evidence and current challenges to inform the control of COVID-19. medRxiv. doi:10.1101/2020.04.14.20063636
- Curran, D., Demmel, J., & Fanshier, R. A. (2012, February). Geo-fence with minimal false alarms. U.S. Patent no. 8,125,332.
- Hong Kong Government. (2020, February 8). Cap. 599C compulsory quarantine of certain persons arriving at Hong Kong regulation. Retrieved from https://www.elegislation.gov.hk/hk/cap599C
- Newton, C. (2020). Why Bluetooth apps are bad at discovering new cases of COVID-19. The Verge.
- Papiewski, J. (n.d.). The disadvantages of bluetooth technology. Techwalla. Retrieved from https://www.techwalla.com/articles/the-disadvantag es-of-bluetooth-technology
- Piguillem, F., & Shi, L. (2020). Optimal COVID-19 quarantine and testing policies. EIEF Work. Paper Series.
- Walk, T. (2017). The limitations of bluetooth trackers. Medium. Retrieved from https://medium.com/turtler/the-limitations-of-bluetooth-trackers-368e943f4964
- Wilder-Smith, A., & Freedman, D. O. (2020). Isolation, quarantine, social distancing and community containment: Pivotal role for old-style public health measures in the novel coronavirus (2019-nCoV) outbreak. Journal of Travel Medicine, 27(2). doi:taaa02. https://doi.org/10.1093/jtm/taaa0
- World Health Organization. (2020, May 10). Contact tracing in the context of COVID-19. (Interim Guidance). Retrieved from https://www.who.int/publications-detail/contact-tracing-in-the context-of-covid-19
- World Health Organisation. (2020). Coronavirus disease 2019 (COVID-19): Situation report, 1, 2 and 61.
- Youssef, M., & Agrawala, A. (2005). The Horus WLAN location determination system. In Proceedings of the Third International Conference on Mobile Systems, applications, and services (MobiSys ’05) (pp. 205-218). New York, USA: ACM Press.