基于虚拟仪器的电缆材料杂质测量的研究

The Study of Cable Materials Impurity Testing Based on Virtual Instrument

运用TCD132D芯片,建立了杂质检测系统。通过虚拟示波器DSO2902对系统采集的数据进行分析和处理,从而有效的识别杂质颗粒的存在与否并能够准确的计算出存在杂质颗粒的尺寸、位置等。结果表明,该系统能够准确的测出XLPE电缆料的杂质颗粒的横向与纵向尺寸,并能够确定该杂质颗粒所处的准确位置与杂质颗粒的个数等特性,其分辨力可达到20?m,误差小于10%,杂质的检出率达100%。

We set up the impurity testing system using the TCD132D chip and design the hardware driving circuits. Process the acquisition data using the virtual oscilloscope DSO2902. The method can discriminate whether the impurity particles exist or not effectively. The result shows that this system can measure the size of impurity particles of XLPE cable materials correctly, it also can find out the accurate location and numbers of impurity particles, The resolving power of this method can reach 20？m and the error is less than 10%.The possibility that the impurity particles can be checked out is up to 100%.