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Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 30, No. 2, pp.99-104

ISSN: 2508-5107 (Online)

Print publication date 15 Apr 2021

Received 29 Jan 2021 Revised 27 Feb 2021 Accepted 03 Mar 2021

DOI: https://doi.org/10.7735/ksmte.2021.30.2.99

Battery-free Digital Tooling Head using Wireless Power Transmission

Seohee Jang^a ; Juhye Shin^a ; Axel Lefebure^a ; Jihye Jeong^a ; Dongha Shim^a^{, *}

aDepartment of MSDE, Seoul National University of Science & Technology (SeoulTech)

Correspondence to: ^*Tel.: +82-2-970-7287 E-mail address: dongha@seoultech.ac.kr (Dongha Shim).

Abstract

This study demonstrates a battery-free digital tooling head (BF-DTH) for real-time monitoring of a rotating machine tool. As tooling heads include more digital electronics and consume more power with improved functionalities, replacement and management of batteries become major issues. A BF-DTH using wireless power transmission is proposed to resolve these issues. The BF-DTH is composed of a transmitter/receiver (TX/RX) coil pair, converters, a wireless microcontroller and thermal sensor. The microcontroller, powered by a wirelessly transmitted and converted DC voltage, measures the tool’s temperature and continuously transmits data from the rotating BF-DTH to an external wireless terminal. The delivered RX power was measured to be 32 mW at 15% efficiency, with the RX converter providing a constant DC voltage regardless of spindle speeds of up to 1200 RPM. The BF-DTH system could be effectively used for emerging smart factory applications, where smart DTHs consume moderate to high power.

Keywords:

Digital tooling head, Battery-free, Wireless power transmission, Wireless terminal, Smart factory

Acknowledgments

This study was supported by the Research Program funded by SeoulTech (Seoul National University of Science & Technology).

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Seohee Jang

Undergraduate student in the Department of MSDE, SeoulTech.His research interest is Manufacturing Systems and Design Engineering.

E-mail: wkdtjgml7410@naver.com

Juhye Shin

Graduate student in the Department of MSDE, SeoulTech.Her research interest is Manufacturing Systems and Design Engineering.

E-mail: juhye0806@gmail.com

Axel Lefebure

Undergraduate student in the Department of MSDE, SeoulTech.His research interest is Manufacturing Systems and Design Engineering.

E-mail: lefebure.axel@gmail.com

Jihye Jeong

Undergraduate student in the Department of MSDE, SeoulTech.Her research interest is Manufacturing Systems and Design Engineering.

E-mail: wisdom5394@gmail.com

Dongha Shim

Professor in the Department of MSDE, SeoulTech.His research interest is the design and implementation of multi-disciplinary engineering systems.

E-mail: dongha@seoultech.ac.kr