MARCH TOWARDS THE WORLD WITH RIGHT TITLES AND JUSTIFIABLE STATUS

Two years ago, Dongguan started to implement ma-chine account mechanism for processing trade as thecountry’s experimental municipality. The machine ac-count mechanism was overall carried out in the province onJuly 1, 1996. Has processing trade been influenced underthe new policy? What about the actual operation of machineaccount mechanism?According to statistics of each municipal foreign tradeand economy comission, from the end of November of 1995to the end of October of 1997, the provice approved a totalof 250,000 processing trade contracts worth $ 157.93 bil-lion. According to statistics of the provincial Bank of China,183,733 contracts and $ 115.6 billion were put on recordduring the period, with 96,174 contracts canceled after veri-

面向桥式起重机运行状态检测DCNN边缘云系统

桥式起重机械是现代工业生产不可或缺的特种生产设备,需检测及监测起运行状态。提出面向桥式起重机运行状态检测DCNN边缘云系统,包括边缘端DetectNet部件定位网络、云端多任务Mask R-CNN识别网络,对起重机关键部件定位、分割及关键点精确提取,结合基于PnP问题求解的坐标重建技术,获得部件关键点坐标,完成基于深度学习与图像传感器运行状态量小车位移、吊具倾斜角度的定量测量。以一种通用式吊钩桥式起重机为试验对象,展示DCNN边缘云系统的识别效果,以测量工具所测结果为约定真值分析小车位移、吊具倾斜角度测量误差,结果表明小车位移测量相对误差为2.80%,吊具倾斜角度测量绝对误差平均值为0.0698 rad,满足工业监测准确度需求。