{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,1]],"date-time":"2025-11-01T09:34:58Z","timestamp":1761989698745,"version":"build-2065373602"},"reference-count":32,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2022,12,7]],"date-time":"2022-12-07T00:00:00Z","timestamp":1670371200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Microsystems play an important role in the Internet of Things (IoT). In many unattended IoT applications, microsystems with small size, lightweight, and long life are urgently needed to achieve covert, large-scale, and long-term distribution for target detection and recognition. This paper presents for the first time a low-power, long-life microsystem that integrates self-power supply, event wake-up, continuous vibration sensing, and target recognition. The microsystem is mainly used for unattended long-term target perception and recognition. A composite energy source of solar energy and battery is designed to achieve self-powering. The microsystem\u2019s sensing module, circuit module, signal processing module, and transceiver module are optimized to further realize the small size and low-power consumption. A low-computational recognition algorithm based on support vector machine learning is designed and ported into the microsystem. Taking the pedestrian, wheeled vehicle, and tracked vehicle as targets, the proposed microsystem of 15 cm3 and 35 g successfully realizes target recognitions both indoors and outdoors with an accuracy rate of over 84% and 65%, respectively. Self-powering of the microsystem is up to 22.7 mW under the midday sunlight, and 11 min self-powering can maintain 24 h operation of the microsystem in sleep mode.<\/jats:p>","DOI":"10.3390\/s22249594","type":"journal-article","created":{"date-parts":[[2022,12,8]],"date-time":"2022-12-08T03:35:53Z","timestamp":1670470553000},"page":"9594","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Self-Powered Long-Life Microsystem for Vibration Sensing and Target Recognition"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4833-9065","authenticated-orcid":false,"given":"Deng","family":"Yang","sequence":"first","affiliation":[{"name":"Department of Precision Instrument, Tsinghua University, Beijing 100084, China"},{"name":"Key Laboratory of Smart Microsystem (Tsinghua University) Ministry of Education, Tsinghua University, Beijing 100084, China"},{"name":"State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084, China"},{"name":"Beijing Laboratory of Biomedical Detection Technology and Instrument, Beijing 100084, China"},{"name":"Beijing Advanced Innovation Center for Integrated Circuits, Beijing 100084, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7791-9686","authenticated-orcid":false,"given":"Wenrui","family":"Duan","sequence":"additional","affiliation":[{"name":"School of Instrument Science and Opto-Electronics Engineering, Beijing Information Science and Technology University, Beijing 100192, China"}]},{"given":"Guozhe","family":"Xuan","sequence":"additional","affiliation":[{"name":"Department of Precision Instrument, Tsinghua University, Beijing 100084, China"},{"name":"Key Laboratory of Smart Microsystem (Tsinghua University) Ministry of Education, Tsinghua University, Beijing 100084, China"},{"name":"State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084, China"},{"name":"Beijing Laboratory of Biomedical Detection Technology and Instrument, Beijing 100084, China"},{"name":"Beijing Advanced Innovation Center for Integrated Circuits, Beijing 100084, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7379-1358","authenticated-orcid":false,"given":"Lulu","family":"Hou","sequence":"additional","affiliation":[{"name":"School of Instrument Science and Opto-Electronics Engineering, Beijing Information Science and Technology University, Beijing 100192, China"}]},{"given":"Zhen","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Precision Instrument, Tsinghua University, Beijing 100084, China"},{"name":"Key Laboratory of Smart Microsystem (Tsinghua University) Ministry of Education, Tsinghua University, Beijing 100084, China"},{"name":"State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6951-3419","authenticated-orcid":false,"given":"Mingxue","family":"Song","sequence":"additional","affiliation":[{"name":"School of Instrument Science and Opto-Electronics Engineering, Beijing Information Science and Technology University, Beijing 100192, China"}]},{"given":"Jiahao","family":"Zhao","sequence":"additional","affiliation":[{"name":"Department of Precision Instrument, Tsinghua University, Beijing 100084, China"},{"name":"Key Laboratory of Smart Microsystem (Tsinghua University) Ministry of Education, Tsinghua University, Beijing 100084, China"},{"name":"State Key Laboratory of Precision Measurement Technology and Instruments, Tsinghua University, Beijing 100084, China"},{"name":"Beijing Laboratory of Biomedical Detection Technology and Instrument, Beijing 100084, China"},{"name":"Beijing Advanced Innovation Center for Integrated Circuits, Beijing 100084, China"}]}],"member":"1968","published-online":{"date-parts":[[2022,12,7]]},"reference":[{"unstructured":"Lin, Y.-L., Kyung, C.-M., Yasuura, H., and Liu, Y. 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