[논문]Embedded 기술을 이용한 COS MEMS 시스템 설계

Hong, Seon Hack; Lee, Seong June; Park, Hyo Jun

doi:10.18770/kepco.2020.06.04.405

Embedded 기술을 이용한 COS MEMS 시스템 설계
COS MEMS System Design with Embedded Technology 원문보기

KEPCO Journal on electric power and energy, v.6 no.4, 2020년, pp.405 - 411

Hong, Seon Hack (Department of Computer Electronics, SEOIL University) , Lee, Seong June (Department of Computer Electronics, SEOIL University) , Park, Hyo Jun (Department of Computer Electronics, SEOIL University)

Abstract ▼ AI-Helper

In this paper, we designed the COS MEMS system for sensing the falling detection and explosive noise of fuse link in COS (Cut Out Switch) installing on the power distribution. This system analyzed the failure characteristics and an instantaneous breakdown of power distribution. Therefore, our system strengths the industrial competence and guaranties the stable power supply. In this paper, we applied BLE (Bluetooth Low Energy) technology which is suitable protocol for low data rate, low power consumption and low-cost sensor applications. We experimented with LSM6DSOX which is system-in-module featuring 3 axis digital accelerometer and gyroscope boosting in high-performance mode and enabling always-on low-power features for an optimal motion for the COS fuse holder. Also, we used the MP34DT05-A for gathering an ultra-compact, low power, omnidirectional, digital MEMS microphone built with a capacitive sensing element and an IC interface. The proposed COS MEMS system is developed based on nRF52 SoC (System on Chip), and contained a 3-axis digital accelerometer, a digital microphone, and a SD card. In this paper of experiment steps, we analyzed the performance of COS MEMS system with gathering the accelerometer raw data and the PDM (Pulse Data Modulation) data of MEMS microphone for broadcasting the failure of COS status.

주제어

표/그림 (19)

그림 Fig. 1. Structure of COS and COS MEMS System.
그림 Fig. 2. LSM6DSOX pin connection.
그림 Fig. 3. Sound acquisition system.
그림 Fig. 4. Block diagram of SD card.
그림 Fig. 5. A valid command format of SD Card
그림 Fig. 6. SD Card software stack.
그림 Fig. 7. Hardware structure of COS MEMS system.
그림 Fig. 8. Architecture of BLE.
그림 Fig. 9. Frequency spectrum and RF channels in BLE.
그림 Fig. 10. Software driver structure of COS MEMS system.
그림 Fig. 11. Driver architecture of COS MEMS system.
그림 Fig. 12. Format of a basic 8-bit response.
그림 Fig. 13. Format of the 40-bit response.
그림 Fig. 14. SoftDevice architecture of nRF5x.
그림 Fig. 15. Software flow of COS MEMS system.
그림 Fig. 16. PCB artwork of COS MEMS system.
그림 Fig. 17. Testbed for COS MEMS system.
그림 Fig. 18. Waveform of Audio, FFT analysis and Accelerometer data.
그림 Fig. 19. COS MEMS system housing.

참고문헌 (21)

Seon Hack Hong, "Embedded system Design with COS LoRa technology," Korea Society of Digital Industry and Information Management, 3rd 14, pp.29-38, 2018.
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Hong Yeong Lee, "The study of 22.9kV distribution COS quality improvement," Univ. of DaeJeon Industry, Korea, 05.2000.
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STMicroelectronics, MP34DT05-A Datasheet, Geneva Switzerland, 01.2019.
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Mohammad Afaneh, "Intro To BLUETOOTH LOW ENERGY, The fastest way to learn BLE," NovelBits, 02. 2018.
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원문보기 상세보기
STEVAL-MKI109V3 User Manual, 4, 2019. Available at www.st.com
Sei Hyun Lee, Doo Kee Park, Kyung Wan Koo & Sang Ok Han, Dept. of Electrical Eng., Chun Nam National University. "Analysis of Electrical Field Distribution in an Insulator of COS using FEM," 12, 1996.
STEVAL-MKI109V3 Professional MEMS Tool motherboard for MEMS adapter, 10. 2018.

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