NDLI: Self-powered wireless digital tachometer scheme without sensors for measuring spin of Yo-yo

Content Provider	IEEE Xplore Digital Library
Author	Asakura, I. Tanaka, A. Nishikawa, H. Douseki, T.
Copyright Year	2013
Description	Author affiliation: Ritsumeikan Univ., Kusatsu, Japan (Asakura, I.; Tanaka, A.; Nishikawa, H.; Douseki, T.)
Abstract	A wireless yo-yo system with a digital tachometer function has been developed. The system consists of a self-powered wireless yo-yo and a receiver. The yo-yo contains a micropower generator and a wireless transmitter. Ultralow-power wireless on-off-keying modulation synchronized to the AC output of the generator makes it possible to determine the maximum rotational frequency of the yo-yo from the minimum period of the pulses detected by a receiver without sensors. Another advantage of the antenna of the transmitter of the yo-yo is that the receiver can detect transmitted pulses at any location around the yo-yo, even though the antenna is directional. The antenna acts as a rotational polarization antenna as it rotates along with the yo-yo. This type of antenna makes it possible for the receiver to detect transmitted pulses once every rotation of the antenna. To verify the effectiveness of our self-powered wireless yo-yo with digital tachometer scheme, we made a wireless yo-yo system consisting of a wireless yo-yo with a micropower generator and a receiver with a PC. When the yo-yo is thrown, the PC calculates the maximum rotational frequency and displays the result on the screen at a distance of up to 3 meters.
Starting Page	1
Ending Page	5
File Size	1173439
Page Count	5
File Format	PDF
ISBN	9781467346429
ISSN	19300395
DOI	10.1109/ICSENS.2013.6688526
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-11-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless communication Generators Transmitting antennas Wireless sensor networks Receiving antennas Antenna radiation patterns
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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