基于TRIZ的提升机钢丝绳缺陷检测系统设计

Design of defect detection system for wire rope of mine hoist based on TRIZ

针对矿井提升钢丝绳人工检测效率低、劳动强度大、抽样检测易漏检等不足,运用TRIZ(Theory of the Solution of Inventive Problems)理论设计了一套矿井提升机钢丝绳缺陷检测系统。该系统包括登录信息填写、缺陷识别算法和自动报表生成3个主要模块。利用缺陷识别算法可生成金属截面积损失(LMA)和局部缺陷(LF)的波形图,利用EMD(Empirical Mode Decomposition)生成重构后的LMA及LF波形图,根据LMA图中的波峰信号判断钢丝绳断丝位置,结合重构后图谱中的峰值高度来确定断丝数量。

In view of the problems during manual inspection for mine hoist wire rope,such as the low efficiency,high labor intensity and easy omission of sampling inspection,the paper designed a system of wire rope defect detection for mine hoist by using TRIZ(Theory of the Solution of Inventive Problems)theory.This system included three main modules:login information filling,defect recognition algorithm and automatic report generation.The oscillograms of LMA and LF could be generated by using the defect recognition algorithm,and the reconstructed LMA and LF oscillograms could be generated by EMD(Empirical Mode Decomposition).Meanwhile,the position of broken wire of the wire rope could be identified according to the wave peak signal in the LMA diagram,and the number of broken wires could be identified by combining the peak height in the reconstructed diagram.