Abstract: A setting and coordination calculation method for protection setting value of DC system is introduced. A protective template library is built by classifying the DC system protections to various protective areas and classifying each protective area. Based on project configuration, a mathematical model of converter station is built, the parameters of equipment components and locations of short circuit are given. The short-circuit current value and the parameters of equipment component are regarded as process parameters during the setting and coordination. The electromagnetic transient simulation is carried out at first in this method. And a specified and standard project of the setting and coordination is formed by abstracting and standardizing the process of the setting and coordination, which makes present setting and coordination of DC transmission engineering independent of the electromagnetic transient simulation software.

Abstract: An electronic device and method determines redundant data by obtaining a reference data patch and a comparative data patch, selecting at least one reference data point from the reference 3D data patch and at least one comparative data point from the comparative 3D data patch, and combining the reference data point and the data points in the reference 3D data patch which are adjacent to a pixel coordinate of the reference data point to form a triangular patch. A determination is made whether a distance between the reference data point and the comparative data point in a pair of nearest points is greater than a second distance threshold to determine the redundant data.

Abstract: The present invention is applicable to the field of image processing technology, provides a three-dimensional facial reconstruction method and system comprising: arranging three-dimensional imaging units with the same configuration on both of left side and right side of a target human face; implementing binocular calibration to the three-dimensional imaging units; establishing a polynomial relation between 3D point cloud coordinates captured by the three-dimensional imaging units and corresponding phases according to a result of the binocular calibration and determining the transformation relation among the 3D point cloud coordinates captured by two three-dimensional imaging units; capturing image sequences on the left side and right side of the target human face by the three-dimensional imaging units to obtain absolute phases of the image sequences; mapping the absolute phases of the image sequences to the 3D point cloud coordinates by using the polynomial relationship; unifying the 3D point cloud coordinate

Abstract: The present invention discloses a 3D scanning control apparatus based on FPGA, for controlling a 3D scanner to scan. The apparatus comprises: a first projection control module, for controlling a structured light generation unit to project to an object; a first image acquisition control module, for controlling a shooting unit to capture a projection image of the object when the first projection control module is projecting; a second projection control module, for controlling another structured light generation unit to project to the object for one more time; a second image acquisition control module, for controlling a corresponding shooting unit to capture the projection image of the object for one more time when the second projection control module is projecting; and a data processing module, for processing the captured projection images with at least one of the Bayer color rendition, color space conversion and phase unwrapping, by using algorithm in the FPGA.

Abstract: The present invention discloses a fastening structure based on ratchet mesh. The fastening structure includes a ratchet sleeve shaft comprising at least one first ratchet portion set on an outer surface thereof, an adjustable sleeve shaft sleeved in the adjustable sleeve shaft and being rotatable around a central axis thereof, and an elastic ratchet plate separately sleeved on the ratchet sleeve shaft. The elastic ratchet plate includes a second ratchet portion corresponding to the first ratchet portion and at least one end fixed to the adjustable sleeve shaft.

Abstract: The present invention generally relates to carbophosphates and other compounds. Such compounds may be used in batteries and other electrochemical devices, or in other applications such as those described herein. One aspect of the invention is generally directed to carbophosphate compounds, i.e., compounds containing carbonate and phosphate ions. For example, according to one set of embodiments, the compound has a formula Ax(M)(PO4)a(CO3)b, where M comprises one or more cations. A may include one or more alkali metals, for example, lithium and/or sodium. In some cases, x is greater than about 0.1, a is between about 0.1 and about 5.1, and b is between about 0.1 and about 5.1. In certain embodiments, the compound may have a unit cell atomic arrangement that is isostructural to unit cells of the minerals sidorenkite, bonshtedtite, bradleyite, crawfordite, or ferrotychite.

Abstract: The present invention generally relates to carbophosphates and other compounds. Such compounds may be used in batteries and other electrochemical devices, or in other applications such as those described herein. One aspect of the invention is generally directed to carbophosphate compounds, i.e., compounds containing carbonate and phosphate ions. For example, according to one set of embodiments, the compound has a formula Ax(M)(PO4)a(CO3)b, where M comprises one or more cations. A may include one or more alkali metals, for example, lithium and/or sodium. In some cases, x is greater than about 0.1, a is between about 0.1 and about 5.1, and b is between about 0.1 and about 5.1. In certain embodiments, the compound may have a unit cell atomic arrangement that is isostructural to to unit cells of the minerals sidorenkite, bonshtedtite, bradleyite, crawfordite, or ferrotychite.

Abstract: Disclosed is a method for synthesizing a lithium transition metal oxide nanostructure for the cathode material LiCoO2, by using a molten salts/hydroxides flux method, and a device thereof.