APPARATUS FOR MEASURING BRIDGE CABLE VIBRATION USING WIRELESS ACCELEROMETER

摘要

The present invention relates to an apparatus for measuring bridge cable vibrations by using a wireless accelerometer. Particularly, the apparatus includes: a bracket fixedly installed at an arbitrary position of a bridge cable; a wireless accelerometer installed on an outer side of the bracket in a perpendicular biaxial direction; a wireless communication unit for performing wireless communication with each wireless accelerometer; and a calculation unit for synchronizing an acceleration signal transmitted from the wireless accelerometer through the wireless communication unit to calculate tension, a vibration mode damping ratio, and vibration displacement of the bridge cable by using the synchronized acceleration signal. According to the present invention as described above, the wireless accelerometer is used, so that a signal line and a power line are prevented from affecting the vibration of the measurement target cable, the tension, the damping ratio, and the displacement of the cable are measured, so that a manager is provided with convenience and the measurement is performed quickly, and the synchronized acceleration signal is measured with respect to the biaxial direction of a cable section, so that actual movement such as rotation of the section is determined.