Wireless Modal Testing with Multiple Battery-free Backscatter Sensors

Jin Mitsugi, Osamu Tokumasu, Yuusuke Kawakita

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

This paper reports the design, implementation and the result of real-world experiment of wireless modal testing with battery-free backscatter sensors. The battery-free backscatter sensor comprises a custom radio frequency integrated circuit (RFIC), a commodity micro electro-mechanical system (MEMS) accelerometer, and an antenna. Sensor data concurrency demanded in modal analysis is realized by allocating a dedicated subcarrier to each backscatter sensor. The orchestration of wireless communications in 920 MHz based on Gen2 protocol and the wireless power supply to the backscatter sensor are performed by a software defined interrogator built on Lab-VIEW communications and USRP. We developed an over the air (OTA) subcarrier frequency allocation with a sequence of WRITE commands of Gen2 protocol, and its performance was confirmed with the experiments in an indoor radio propagation. The accuracy of the proposed wireless structural modal testing was experimentally verified by comparing with a commercial modal test system with wired accelerometers. Although the phase characteristic measurement is disturbed by the instability of the clock source of RFIC, the gain characteristics of wireless modal testing matches well with that of a commercial wired modal testing system.

本文言語English
ホスト出版物のタイトル2021 IEEE International Conference on Wireless for Space and Extreme Environments, WiSEE 2021
出版社Institute of Electrical and Electronics Engineers Inc.
ページ90-96
ページ数7
ISBN(電子版)9781665403719
DOI
出版ステータスPublished - 2021
イベント2021 IEEE International Conference on Wireless for Space and Extreme Environments, WiSEE 2021 - Cleveland, United States
継続期間: 2021 10月 122021 10月 14

出版物シリーズ

名前2021 IEEE International Conference on Wireless for Space and Extreme Environments, WiSEE 2021

Conference

Conference2021 IEEE International Conference on Wireless for Space and Extreme Environments, WiSEE 2021
国/地域United States
CityCleveland
Period21/10/1221/10/14

ASJC Scopus subject areas

  • 安全性、リスク、信頼性、品質管理
  • コンピュータ ネットワークおよび通信
  • 航空宇宙工学
  • 器械工学

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