표면탄성파를 이용한 chipless 무선 전압 전류 센서 시스템 개발
Development of chipless wireless voltage and current sensor system using surface acoustic wave
- 주제(키워드) 전압 전류 센서 , 표면탄성파 , GMI 센서
- 발행기관 아주대학교
- 지도교수 이기근
- 발행년도 2018
- 학위수여년월 2018. 8
- 학위명 석사
- 학과 및 전공 일반대학원 전자공학과
- 실제URI http://www.dcollection.net/handler/ajou/000000028139
- 본문언어 영어
- 저작권 아주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
A wireless passive chip-less power sensor consists of a current sensor and a voltage sensor. Current sensing systems utilize giant magneto-impedance (GMI) sensors and voltage sensor systems utilize static capacitors, resistors, one-port SAW reflection delay lines, and antennas. One-port SAW reflection delay line replaces the existing transceiver system consisting of thousands of transistors to achieve chip-less, passive and wireless operation. We confirm that the amplitude of the SAW reflection peak varies greatly due to the change in impedance of the GMI sensor due to the current through the conductor and the change in charge accumulated on the capacitor by the input voltage. For current sensor, currents in the range of 0-12 A shows good linearity and 0.72 dB/A sensitivity were observed. For voltage sensor, voltages in the range of 0-5 V shows good linearity and sensitivity of 1.85 dB/V. Coupling of mode (COM) modeling and impedance matching analysis also predicts device performance in advance and compares them to experiments.
more목차
Chapter 1. Introduction 1
Chapter 2. Operating principles 4
2.1 GMI Sensor 4
2.1.1 The theoretical explanation of the GMI effect of monolayer film 4
2.1.2 Theoretical Explanation of the GMI Effect of Sandwich Films 7
2.2 Overall sensor system 10
Chapter 3. Theoretical modeling using Coupling-of-modes (COM) 13
Chapter 4. Explanation implement of current sensor system 17
4.1 GMI sensor 17
4.2 One-port SAW reflection delay line 23
4.3 SU-8 platform 27
4.4 Antenna and wireless test 29
Chapter 5. Explanation implement of Voltage sensor system 32
5.1 Voltage sensor design and set up 32
5.2 Testing Result 34
5.3 Test results in terms of parameters 35
Chapter 6. Overall sensor integration and measurement 39
6.1 sensor system integration 39
6.2 Result and discussions 42
Chapter 7. Summary 45
References: 46
