Journal
ACS NANO
Volume 14, Issue 2, Pages 2475-2482Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.9b10142
Keywords
self-powered system; vibration threshold monitoring; triboelectric nanogenerator; real-time alarm system; dual-model structure
Categories
Funding
- National Key RAMP
- D Project from the Minister of Science and Technology [2016YFA0202704]
- National Natural Science Foundation of China [61774016, 51432005, 515 1101243, 51561145021]
- Beijing Municipal Science AMP
- Technology Commission [Z171100000317001, Z17 11 00002017017, Y3993113DF]
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Vibration sensor is very necessary for monitoring the structural health of constructions. However, it is still a major challenge to meet simultaneously real-time monitoring, continuous assessment, and early incident warning in a simple device without a complicated power and analysis system. Here, we report a self-powered vibration sensor system to achieve real-time and continuous detection of the vibration characteristics from a dual-mode triboelectric nanogenerator (AC/DC-TENG), which can produce either alternating current (AC) or direct current (DC) within different operation zones. Within the vibration-safe region, the AC/DC-TENG with AC output not only can continuously assess the vibration characteristics but also can power the signal transmission. More importantly, once the vibration amplitude crosses the danger threshold, the AC converts immediately to DC, meanwhile triggering the alarm system directly to accurately predict the danger of construction. Our self-powered vibration sensor system can serve as a facile tool for accurately monitoring the structural health of constructions.
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