A new concept is suggested on tectonomagnetic research about the noise in simultaneous geomagnetic difference data caused by the effect of Sq local-time variation, together with the method of theoretical calculation. ...A new concept is suggested on tectonomagnetic research about the noise in simultaneous geomagnetic difference data caused by the effect of Sq local-time variation, together with the method of theoretical calculation. The level of the noise and its contribution to the total noises of the differences data are analyzed. The result indicates that the noise increases linearly with the increase of the distance between the two stations in the range of 40° longitude-difference, and its increasing rate is about 0.4 nT/（°）at latitude 40°N. The example calculated at a pair of sites with longitude-difference 0.357°, shows that the noise is about one fifth of the total noises of the difference data on geomagnetic quiet-day.展开更多
提升绳是矿井、电梯等系统的关键承载部件,其安全性至关重要。针对传统检测方法实时性差、误报率高的问题,构建了基于图像识别的提升绳缺陷识别-定位-联动系统。该系统通过结构先验设定ROI(Region of Interest,感兴趣区域),采用多尺度...提升绳是矿井、电梯等系统的关键承载部件,其安全性至关重要。针对传统检测方法实时性差、误报率高的问题,构建了基于图像识别的提升绳缺陷识别-定位-联动系统。该系统通过结构先验设定ROI(Region of Interest,感兴趣区域),采用多尺度融合模型提升识别精度,结合绳体几何映射与时序跟踪实现动态捕捉与稳定复核,并在控制层实现分级联动。现场验证表明,该系统识别准确率高、误报率低,具备良好的工程适应性。展开更多
基金Joint Seismological Science Foundation of China (198009).
文摘A new concept is suggested on tectonomagnetic research about the noise in simultaneous geomagnetic difference data caused by the effect of Sq local-time variation, together with the method of theoretical calculation. The level of the noise and its contribution to the total noises of the differences data are analyzed. The result indicates that the noise increases linearly with the increase of the distance between the two stations in the range of 40° longitude-difference, and its increasing rate is about 0.4 nT/（°）at latitude 40°N. The example calculated at a pair of sites with longitude-difference 0.357°, shows that the noise is about one fifth of the total noises of the difference data on geomagnetic quiet-day.
文摘提升绳是矿井、电梯等系统的关键承载部件,其安全性至关重要。针对传统检测方法实时性差、误报率高的问题,构建了基于图像识别的提升绳缺陷识别-定位-联动系统。该系统通过结构先验设定ROI(Region of Interest,感兴趣区域),采用多尺度融合模型提升识别精度,结合绳体几何映射与时序跟踪实现动态捕捉与稳定复核,并在控制层实现分级联动。现场验证表明,该系统识别准确率高、误报率低,具备良好的工程适应性。
