【摘要】 针对交联聚乙烯电缆绝缘料纯净度检测的问题,研制了基于线阵CCD技术的高速扫描测量系统.该系统在平行光的照射下,通过线阵CCD控制电路获得电缆材料缺陷信号,使用虚拟示波器DSO-2902对缺陷信号进行采集、传输,借助于计算机进行分析处理,从而精准地检测出缺陷.由数据采集系统对计算机内的信号数据进行处理,在保留杂质信息的前提下大幅度减少了待处理数据,从而实现对缺陷具体尺寸和所处位置的检测.结果表明,该系统能够准确地测出交联聚乙烯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20μm,误差小于5%,杂质的检出率达100%.更多还原

【Abstract】 To solve the crossing-linkable polyethylene(XLPE) insulation compound purity evaluation problem,a high speed scanning measurement system is designed according to Linear CCD technology.The inspecting system of defects in cable materials based on CCD obtains signals of defects in cable materials with irradiation of parallel light,by using linear array CCD control circuit.The defect signals are collected and transferred by using virtual oscillograph DSO-2902,and the defect signals are analyzed and processed by using computer.The defects are precisely figure out.The data of signals memorized in computer are processed by using software system of data collecting,the data quantity to be processed is decreased greatly,while the contamination information data are reserved.Thereby,the inspection of precise size and location of defects are achieved.The experiment results show that the proposed system can measure both the transverse and the longitudinal size of the XLPE contamination particle well and truly,and also detect the accurate positions and the number of a certain kind of impurity particle.The acuity of this system can reach 20 μm and the error ratio is less than 5%.The detecting ratio of the contamination particles can be high up to 100%.更多还原