International Business Machines Corporation

Envision Digital International Pte. Ltd.

Shanghai Envision Digital Co., Ltd.

Shu Xi Wei

Ye Qing Chen

Ning Wang

Ting Jiang

Qingsheng Zhao

Yong Ai

Ruo Meng Hao

Zhongji Yin

Ruomeng Hao

Youmiao Zhang

Ke Zhao Li

Weiyu Cui

Zhimeng Wang

Dong Ao

A method and apparatus for inspecting a wind turbine blade. The method includes: acquiring a sound signal generated by an impingement of wind on the wind turbine blade using a sound acquisition device; generating a frequency spectrogram corresponding to the sound signal; and obtaining a damage recognition result of the wind turbine blade from the frequency spectrogram by performing image recognition on the frequency spectrogram based on a damage recognition model. With the method, a damage type of the wind turbine blade is accurately recognized based on the frequency spectrogram without manual inspection. Therefore, human resources are saved. In addition, the health state of the wind turbine blade can be monitored in real time.

Method and apparatus for inspecting wind turbine blade, and device and storage medium thereof

Disclosed are a method and apparatus for detecting a yaw-to-wind abnormality. The method includes: acquiring a wind direction deviation angle within a specified time period; calculating a power performance index, wherein the power performance index is a dimensionless number used to characterize power generation performance of a wind turbine; determining an optimal wind direction deviation angle based on the power performance index; determining a current wind direction deviation angle according to probability distribution of the wind direction deviation angle; and if a difference between the optimal wind direction deviation angle and the current wind direction deviation angle is greater than a preset threshold, determining that a yaw-to-wind abnormality is detected. Compared with the related technology in which yaw-to-wind detection is performed through a power fitting curve, in the technical solution according to the embodiments of the present disclosure, a power index is directly used, which avoids the problem of poor power curve fitting effect and improves the accuracy of yaw-to-wind detection.

Method and apparatus for detecting yaw-to-wind abnormality, and device and storage medium thereof

Managing data security on a mobile device. Data associated with a mobile device is received; the data includes an identification (ID) of the mobile device and a location of the mobile device relative to one or more location sensor devices. A path is determined, relative to the one or more location sensor devices, through which the mobile device has traveled. An electronic security key is communicated to the mobile device based on determining that the path corresponds to a defined path associated with the mobile device.

Protecting sensitive data in a security area

The present invention provides a mechanism for generating an initial copy in replication initialization. A request is received to replicate a source volume from a source node to a target node so as to generate the initial copy of the source volume in the target node. With respect to a current source data block of at least one source data block contained in the source volume, a search in the target node is performed for a target data block corresponding to the current source data block. Responsive to identifying the target data block, the initial copy of the source volume in the target node is updated using the target data block with the information from the current source data block.

Generating initial copy in replication initialization

Managing data security on a mobile device. Data associated with a mobile device is received; the data includes an identification (ID) of the mobile device and a location of the mobile device relative to one or more location sensor devices. A path is determined, relative to the one or more location sensor devices, through which the mobile device has travelled. An electronic security key is communicated to the mobile device based on determining that the path corresponds to a defined path associated with the mobile device.

A data storage system, and a method for accessing data in a data storage system, wherein the data storage system comprises at least a first volume and a second volume, and the first volume and the second volume remain consistent by a synchronous copy relationship, the method comprising: setting a virtual unique identifier of the second volume as a unique identifier of the first volume; creating a first path from a host to the first volume and a second path from the host to the second volume by using the unique identifier of the first volume; accessing data by using the first path from the host to the first volume; and setting the second path from the host to the second volume as unavailable.

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Shanghai, China

Shu Xi Wei