Abstract：Deflection monitoring is an important aspect of health monitoring system, and inclined angle measurement can real-time (RT) and precisely obtain the structural deflection. The relation between inclined angle and deflection is deduced based on cantilever and simply supported beam. Then the deflection is integrated and fitted though inclined angle by MATLAB and this method is compared with the direct deflection measurement during a test of a steel beam under loads. Finally, a health monitoring engineering project is introduced to show inclinometers implication on the deflection monitoring. The analysis shows that the relationship between incliner angle and deflection is reasonable, while the boundary conditions should be considered with regard to different structures. The deflection integrated though incliner angle is nearly identical with the deflection measurement. If the inclinometers are used on the health monitoring system, then the RT deflection and deflection at an arbitrary time point of the structures can be obtained.
2013, Vol. 32 
