Microphone Array를 이용한 고압설비의 고장위치인식 알고리즘

다국어 초록 (Multilingual Abstract)

This study receives the noise transmitted in a constant audio frequency range through a microphone array in which the noise (like grease in a pan) occurs on the power supply line due to the troublesome partial discharge (arc). Then by going through a series of signal processing of removing noise, this study measures the distance and direction up to the noise caused by the troublesome partial discharge (arc) and monitors the result by displaying in the analog and digital method. After these, it determines the state of each size and judges the distance and direction of problematic part. When the signal sound transmitted by the signal source of bad insulator is received on each microphone, the signal comes only in the frequency range of 20 ㎑ by passing through the circuit of amplification and 6th low pass filter. Then, this signal is entered in a digital value of digital signal processing (TMS320F2812) through the 16-bit A/D conversion. By doing so, the sound distance, direction and coordinate of bad insulator can be detected by realizing the correlation method of detecting the arriving time difference occurring on each microphone and the algorithm of detecting maximum time difference.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 도달시간차 알고리즘
• 3. 위치인식 알고리즘
• 4. 실험 및 결과
• 5. 결론
• 감사의 글
• 참고문헌
• 저자소개

참고문헌 (Reference)

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