6results about How to "Avoid updating" patented technology

The invention discloses background layer updating during coding. A method performed by an image processing apparatus for updating a background layer during encoding of a scene is provided. A scene is encoded based on classifying objects depicted in the scene as foreground or background. The background is divided into ranked background layers, wherein each background layer is associated with a respective depth model. The method comprises detecting (S102) a change in an image portion of a background layer. The method comprises calculating (S104) a difference between the image portion and a corresponding image portion of a background layer ranked behind the one background layer. The method comprises selecting (S106a) the background layer ranked behind the one background layer to represent the image portion when the difference is less than a threshold.

The invention discloses a power distribution network user self-discipline voltage regulation method and system based on responsibility definition, and the method comprises the steps: firstly obtaining a power distribution network topological structure, time-of-use electricity price information and photovoltaic power and load prediction data at a day-ahead stage, and constructing an economic dispatching model with the minimization of system network loss cost and reactive service cost as a target; the decision variables comprise tap gears of an on-load voltage regulating transformer, reactive power output of a power distribution substation and reactive power output of each photovoltaic user, and solving to obtain a day-ahead scheduling scheme; establishing a reference operation state based on the scheme, and establishing a corresponding linearization voltage sensitivity relationship; in the intraday operation stage, the actual active power output of each photovoltaic user is collected, and the node voltage deviation caused by the deviation between the actual photovoltaic power output and the predicted value is calculated by using the node self-sensitivity coefficient; according to the voltage sensitivity relation, reactive compensation amount required for stabilizing the voltage deviation is determined, and quantitative definition of voltage regulation responsibility is achieved; each photovoltaic user autonomously updates the reactive power output to complete the self-discipline regulation, and the distribution network dispatching center monitors whether the operation state after the self-discipline voltage regulation meets the safety operation requirement or not.

The invention relates to the technical field of educational information processing, in particular to a question bank knowledge point screening method and system based on text analysis. The method comprises the following steps: extracting a plurality of candidate nodes corresponding to old nodes mounted on test questions to be processed in a new outline map, and obtaining test question text vectors of the test questions; generating a unique feature vector according to the unique vocabulary, different from other candidate nodes, of each candidate node; determining text similarity according to the test question text vector and each unique feature vector; determining a topological matching degree according to a matching relationship between a historical associated node set constructed based on historical test paper records and a topological neighborhood set of each candidate node; generating a mutual exclusion identifier according to whether each candidate node belongs to a historical associated node set; the text similarity, the topological matching degree and the mutual exclusion identification are fused, and a comprehensive cost value is determined; and comparing the minimum comprehensive cost value with a preset cost threshold value, and determining to execute node updating or isolation operation on the test questions according to a comparison result, so that accurate screening of the stock test questions is realized.

The application provides an island micro-grid energy storage configuration method and device for wind, light, storage and bundling, and the method comprises the following steps: constructing an energy storage configuration constraint condition, which is used for constraining the rated power and rated energy of the configured energy storage device; solving an optimization problem based on the constraint condition to obtain an energy storage configuration result of the island micro-grid, wherein the energy storage configuration result comprises the rated power and rated energy of the energy storage device, and a target function of the optimization problem is determined based on the cost corresponding to the energy storage configuration result; wherein the island micro-grid comprises a plurality of energy management nodes, each energy management node corresponds to a turbine generator, and the photovoltaic power generation device, the wind power generation device and the energy storage device in the island micro-grid are connected to the AC grid connection point of the turbine generator in the energy management node through a converter. The application can reduce the energy storage configuration cost of the offshore island micro-grid.

The application provides a battery management system information updating method and device. The method comprises the following steps: connecting all external devices requiring information updating to a multi-channel switch module and a first communication channel; for each current external device requiring information updating, performing the following steps: A. controlling the multi-channel switch module to turn on the channel switch between the power supply end of the current external device and an external power supply; B. establishing a communication connection with the current external device by means of the first communication channel through the current identity ID of the current external device, and sending the updating information corresponding to the current external device to the current external device, so that the current external device updates the information.

The invention relates to the technical field of webpage reconstruction, and provides a webpage reconstruction method for a mobile terminal and related equipment, and the method comprises the following steps: constructing a virtual node tree of an original webpage; for each virtual node, calculating an information density weight of the virtual node, and determining a region type corresponding to the virtual node according to the information density weight; and defining a page template of the mobile terminal, and injecting the attribute of each virtual node into the page template of the mobile terminal according to the region type corresponding to each virtual node to obtain a reconstructed webpage of the mobile terminal. According to the method, the accuracy of webpage reconstruction of the mobile terminal can be improved.