基于虚拟仪器技术的钢丝绳张力检测方法的研究

采用非接触方式检测钢丝绳的股波信号,通过相关法相位差测量算法获得应变大小,实现了钢丝绳张力的非接触式在线定量检测。利用相关和正弦函数的性质,使部分噪声分量被有效地与有用信号分离,从而提高了抗随机干扰能力和检测的准确度。基于虚拟仪器技术,以灵活的软件功能代替硬件处理电路,有效地提高了检测系统的可靠性、检测精度和自动化程度。

Study on Tension Detection Method of Wire Ropes Based on Virtual Instrument Technology

With no-contact tension detection technique,the strand fluctuating signal of wire ropes is implemented through measuring the phase difference by correlation analysis algorithm.Cross-correlation functions of two measured signals are directly computed and some properties about correlation and sine function are adopted to separate the part noise and the useful signal.And so the capability to resist random disturbance and the measurement accuracy is improved.With virtual instrument technology and the application of special software module to replace hardware unit,the detection system is more reliable and accurate,and higher automatization.