Trans. Korean Soc. Noise Vib. Eng., 25(11) : 787~797, 2015 한국소음진동공학회논문집 제25 권 제11 호, pp. 787~797, 2015 http://dx.doi.org/10.5050/KSNVE.2015.25.11.787 ISSN 1598-2785(Print), ISSN 2287-5476(Online) Trans. Korean Soc. Noise Vib. Eng., 25(11) : 787~797, 2015 ┃ 787 압축센싱 한 달팽 리기반 필터뱅크 실험적 검증 An Experimental Study of the Cochlea-inspired Artificial Filter Bank(CAFB) for Compressed Sensing 허  희 * ․ 전 준 용 † ․ 전 승  ** Gwanghee Heo, Joonryong Jeon and Seunggon Jeon (Received October 16, 2015 ; Revised November 16, 2015 ; Accepted November 16, 2015) Key Words : Structural Health Monitoring(조 건전도 모니터링), Cochlea-inspired Artificial Filter Bank(달팽 리기반 필터뱅크), Band-pass Filter Optimizing Algorithm(대역통필터 최적화 알리듬), Peak-picking Algorithm(첨두 색출 알리듬), Wireless Multi-measurement System(선 다종  시스템), Compressed Sensing(압축센싱) ABSTRACT In this paper, a cochlea-inspired artificial filter bank(CAFB) was developed in order to efficiently acquire dynamic response of structure, and it was also evaluated via dynamic response experiments. To sort out signals containing significant modal information from all the dynamic responses of struc- ture, it was made to adopt a band-pass filter optimizing algorithm(BOA) and a peak-picking algorithm (PPA). Optimally designed on the basis of El-centro and Kobe earthquake signals, it was then em- bedded into the wireless multi-measurement system(WiMMS). In order to evaluate the performance of the developed CAFB, a vibration test was conducted using the El-centro and Kobe earthquake signals, and structural responses of a two-span bridge were obtained and analyzed simultaneously by both a wired measurement system and a CAFB-based WiMMS. The test results showed that the compressed dynamic responses acquired by the CAFB-based WiMMS matched with those of the wired system, and they included significant modal information of the two-span bridge. Therefore this study showed that the developed CAFB could be used as a new, economic, and efficient measurement device for wireless sensor networks(WSNs) based real time structural health monitoring because it could re- construct the whole dynamic response using the compressed dynamic response with significant modal information. * 1. 서 론 최근 건설분야에서는 거 심된 조 설 와시 기술에서 벗어나 지 및 리를 한 건 전도 모니터링(structural health monitoring; SHM) 에 대한 기술 대두되 다 (1,2,12,14~16) . 때 기 존 건설조 건전도 모니터링 한 조 답  대부분 선 시스템에 존하 다 (3,4) . 여기서 선 시스템 설와 동에 제약 따르, 특히 조답 종류에 따라 독립 또는 개별된 데터 로거를 사용해야하기 때에  † Corresponding Author ; Member, Civil Eng., Konyang University E-mail : jrjeon@kyu.ac.kr * Member, Civil Eng., Konyang University ** Civil Eng., Chungnam National University ‡ Recommended by Editor Hyung Jo Jung ⓒ The Korean Society for Noise and Vibration Engineering