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Passive wireless antenna sensor for strain, temperature, crack and fatigue measurement
Passive wireless antenna sensor for strain, temperature, crack and fatigue measurement
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机译:无源无线天线传感器,用于应变,温度,裂纹和疲劳测量
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摘要
An apparatus and method is provided for monitoring a condition of a structure using a passive wireless antenna sensor having a known resonant frequency when mounted on the structure. A signal is transmitted with sweeping frequencies around a known resonant frequency to the passive wireless antenna sensor. A signal is received from the passive wireless antenna sensor and a resonant frequency of the passive wireless antenna sensor is determined based on the received signal. The determined resonant frequency is then compared to the known resonant frequency, whereby a change in the resonant frequency indicates a change in the condition of the structure.
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