For the problem of bad accuracy due to the strong noise from the analog signal transmitting and the strong temperature output in fatigue damage monitoring
a digital fatigue sensor based on the ADuC845 is introduced.It has temperature compensation
nonlinear calibration and communication. Also there are voltage regulators
high precision and low temperature coefficient reference and power supply circuits on the sensor.Experiments prove that the resolution of the system reaches 0.001Ω and the time drift is less than 0.002Ω/h.So it completely can meets the requirements of fatigue monitoring.
Statistical analysis of online strain response and its application in fatigue assessment of a long-span steel bridge [J] . Z.X. Li,T.H.T. Chan,R. Zheng. Engineering Structures . 2003 (14)
STRUCTURAL HEALTH MONITORING OF AN AIRCRAFT JOINT [J] . T. MICKENS,M. SCHULZ,M. SUNDARESAN,A. GHOSHAL,A.S. NASER,R. REICHMEIDER. Mechanical Systems and Signal Processing . 2003 (2)
Fatigue analysis and life prediction of bridges with structural health monitoring data — Part I: methodology and strategy [J] . Z.X. Li,T.H.T. Chan,J.M. Ko. International Journal of Fatigue . 2001 (1)