PURPOSE: A device for measuring a tension of a bridge cable by the dynamic characteristics of the cable is provided to reliably measure the tension of a cable by vibration naturally generated by wind or vehicles applied to the cable on the basis of the natural frequency of the cable. CONSTITUTION: A device for measuring a tension of a bridge cable by the dynamic characteristics of the cable includes an accelerometer(3) for measuring a vibration-acceleration on the basis of a time of the bridge cable, an amplifier for amplifying the measured vibration-acceleration, a low band pass filter(5) for blocking a frequency other than a predetermined range and filtering the amplified vibration-acceleration signal into a predetermined frequency signal required for the tension measurement, an A/D converter(6) for converting the filtered vibration-acceleration signal to a digital signal, a noise component removing part formed of Hanning Window for removing noise components from the digitalized signal, a fast Fourier transformation part(8) for converting the noise-removed vibration-acceleration signal to a vibration-acceleration signal based on the frequency for forming spectrum of the vibration-acceleration signal, a natural frequency determining part(9) for determining a natural frequency from the spectrum, and a cable tension determining part(10) for operating a valid length and tension of the cable.
展开▼
机译：用途：一种用于通过电缆的动态特性测量桥式电缆张力的装置，用于根据风速或施加在电缆上的车辆自然产生的振动来可靠地测量电缆的张力，该振动是基于电缆的固有频率。电缆。组成：一种用于通过电缆的动态特性来测量桥梁电缆张力的设备，包括用于基于桥梁电缆时间测量振动加速度的加速度计（3），用于放大所测振动的放大器-加速度;低带通滤波器（5），用于阻塞预定范围以外的频率，并将放大的振动加速度信号滤波为张力测量所需的预定频率信号; A / D转换器（6），用于转换滤波后的振动加速度信号转换为数字信号，由Hanning Window构成的噪声分量去除部件，用于从数字化信号中去除噪声分量，快速傅立叶变换部件（8），用于将去除噪声的振动加速度信号转换为振动加速度基于用于形成振动加速度信号的频谱的频率的信号，用于确定自然的固有频率确定部分（9）频谱中的频率，以及用于操作电缆的有效长度和张力的电缆张力确定部件（10）。
展开▼
