487results about How to "Reduce load pressure" patented technology

The invention relates to an improved bone screw for use in orthopaedic surgery, in particular with external fracture fixation devices, of the type which comprises ahead (3), a shank (4), and a threaded portion (5) tapering towards a tip (2) at the opposite end from the head (3). Advantageously, the threaded portion (5) has at least one constant pitch section comprising threads (9) which have a triangular cusp-like profile in cross section and are separated from each other by a shaped bottom land with a concave profile (10) defined by two countersloping planes.

The invention provides a wind energy and solar energy grid-connected generation system and a control method thereof. The wind energy and solar energy grid-connected generation system comprises a generation unit, an inversion unit, a grid-connecting unit, a main control unit and a detection unit. Each unit is effectively controlled by an integrated control unit which is formed by a digital signal processor (DSP), and operating state parameters of the system are predicted by a neural network, so the defect that the grid-connected system changes due to execution delaying of a control instructionis overcome, and the operating stability of the system is improved. Island detection adopts an active and passive detection mode, so the capacity for anti-island operation of the system is improved. The invention has the advantages that: inverted electric energy is supplied to an electricity grid and can be locally supplied to local alternating current and direct current loads, so the load pressure of the electricity grid is reduced, and the capacity for stable operation of the electricity grid can be improved; and when the output electric energy of the system is smaller than a local load, the electricity grid can supply power to the local load of the system, so the local load is supplied with power doubly by power supplies of the system and the electricity grid, and the time for uninterrupted power supply of the power supplies is prolonged.

The invention discloses a cloud-aided intelligent warehouse management robot system and method. The system and the method support a cloud platform, apply a software definition network, realize human-machine interaction, and realize a real-time access function of a whole warehouse under the interaction, self organization and coordination of multiple robots. In the operating process, the robots assist in planning pickup paths via the cloud platform, search and analyze customer orders in a database, and acquire information of goods to be carried. The robots confirm goods by scanning RFID (Radio Frequency Identification) labels, scan surrounding information by using self cameras, upload the information to a cloud end for processing and analyzing to plan operating tracks, and accurately deliver the goods to a packing place for packing. Meanwhile, the robots can share knowledge bases, control modes and network modes and interact with each other via the cloud platform to realize group sensing intelligence, so that each robot not only can independently complete a task, but also can jointly complete various tasks by cooperation.

The invention belongs to the technical field of security and protection equipment manufacture, and particularly relates to an intelligent security and protection system for a smart new town. An accesscontrol system is a 4G face capturing camera deployed on the inspection spot position of a key area for realizing ultrahigh-density face capture; under a condition that the system is not in direct contact with equipment, the camera collects face dynamic pictures at fixed frequency, and a face recognition algorithm is applied to each frame of detected face image; an intelligent face recognition algorithm module is embedded into the 4G face capturing camera to realize face recognition on the front end of the camera; the 4G face capturing camera with the built-in face recognition algorithm module nearby processes and collects data on front-end camera equipment on an edge side; and near-end service is provided on one side of a data source, an application is initiated on the edge side, a quicknetwork service response can be generated, a time delay and transmission cost are reduced, and the transmission cost of a broadband and a load stored on the China Unicom cloud can be lowered.

The invention provides a wireless resource allocation method based on network slices. A centralized wireless resource manager periodically allocates wireless resources to each slice in a network, and sends information of the wireless resources allocated to each slice to a wireless resource manager of each slice; the wireless resource manager of the slice allocates the wireless resources to each terminal equipment in the slice, and periodically performs distributed negotiation based on a matching process with the wireless resource managers of other slices in the network; resources of the matched slices are shared finally; furthermore, the wireless resource manager of a resource contribution slice periodically adjusts the proportion of the shared resources in the resource pool of the slices to dedicated resources; and in addition, the wireless resource manager of each slice also can re-allocate the wireless resources of the slices between the terminal equipment so as to be suitable for the time-varying performance of a channel and the mobility of the terminal equipment. Due to autonomous management of the wireless resources by the slices, the load pressure of the centralized wireless resource manager is reduced.

A variator assembly comprising a variator of the toroidal-race rolling-traction type. The assembly has input and output discs and rollers which are acted on by hydraulic roller control actuators. They are positioned between the discs to transmit torque from one disc to the other. Hydraulic end loading means supplied with fluid at an end load pressure to apply an end load to bias the discs and the rollers toward each other, thereby enabling the transmission of torque. Reaction pressure supply means are connected to the roller control actuators to cause them to apply an adjustable reaction force to the rollers. The assembly also has hydraulically influenced valve means which serve to compare an input related to the end load pressure with an input related to the reaction pressure and to control the end load pressure in dependence upon the comparison, thereby maintaining a relationship between the end load and reaction pressures. Adjustment means are provided to adjust the relationship between the end load and reaction pressures.

The invention discloses an intelligent hash data layout method, a cluster storage system and a cluster storage method. The intelligent hash data layout method is used for laying out storage nodes in a data volume. Data is distributed through a hash distribution method by taking a directory as a basic unit. The parent directory of a file utilizes extended attributes to record the mapping information of the storage nodes. Sub-files are distributed in the storage nodes to which the parent directory belongs. The distribution method of the sub-files in the storage nodes to which the parent directory belongs specifically comprises one of the following situations that: the sub-files are distributed in the storage nodes to which the parent directory belongs through the hash distribution method; the sub-files are distributed in the storage nodes to which the parent directory belongs through a zonal two-level distribution method; the sub-files are distributed in the storage nodes to which the parent directory belongs through a duplicate two-level distribution method; and the sub-files are firstly distributed in the storage nodes to which the parent directory belongs through the zonal two-level distribution method and then are distributed through a duplicate three-level distribution method. The system and the methods provided by the invention have the advantages that the extensibility, the performance, the availability and the applicability of the cluster storage system can be remarkably improved, and the load pressure of a storage server can be greatly decreased.

The invention provides a game system comprising a game server and a game client connected with the game server, wherein the game system further comprises a live broadcast access server used for accessing live broadcast service provided by a live broadcast platform in the game client, wherein the live broadcast access server comprises a live broadcast hall service unit used for obtaining a live broadcast list of the live broadcast platform according to a preset rule, and allocating a corresponding game live broadcast room to at least a part of live broadcast rooms of the live broadcast platformin the live broadcast list; and a game live broadcast room service unit used for creating a corresponding game live broadcast room according to the allocation of the live broadcast hall service unit;and the live broadcast hall service unit is further used for sending live broadcast data obtaining address to the game players in the game live broadcast room via the game server, so that the game client receives live broadcast data. The game system has the advantages of high stability and high data transmission efficiency.

The invention discloses a hostile attack preventing method and a network system. The method comprises the steps that a second server receives first data sent by client sides, wherein the first data are connection request data from all the client sides; the second server obtains a filter rule, wherein the filter rule comprises a request address list and a parameter rule; the second server filters the first data through the filter rule, and the first data meeting the filter rule are sent to a first server. The network system comprises at least one client side, the first server and the second server. For illegal requests with request parameter filtering not meeting the rule, error information is directly returned at the second server, the information does not directly enter the first server for parameter legalization verification, the load pressure of the first server can be reduced, and some hostile attacks are prevented.

The invention provides a message pushing method, device and system. The message pushing method comprises the steps of: receiving a notification message sent by an application server, wherein the notification message comprises pushing content information and identification information of a terminal device; obtaining current network access state information of the terminal device, which corresponds to the identification information; and according to the network access state information, sending the notification message to the terminal device. According to the invention, according to different network access states of the terminal device, whether the notification message from the application server is pushed in real time to the terminal device is determined, the busy degree of a network can be relieved, and the load of the mobile network is reduced.

The invention discloses a hybrid hydraulic excavator, which comprises a control system. The control system comprises a first energy release valve block (1), a second energy release valve block (2), a first energy accumulator (4), a second energy accumulator (3), a first rotary energy recovering valve block (5), a second rotary energy recovering valve block (6), a rotary motor (7), a movable arm oil cylinder (8), a movable arm energy recovering valve block (9), a guide control valve block (10), a pump-controlled system valve block (11), a multi-way valve (12), a guide hydraulic pump (13), a first main hydraulic pump (14), a second main hydraulic pump (15), a hydraulic oil tank (16) and a hybrid controller (17). The hydraulic excavator can automatically judge and recover braking energy to a rotary system motion state at a deceleration braking energy recovering stage and simultaneously enable an engine to always work at an efficient interval.

The invention provides a data buffering device, the network memory system and the buffering method adopting the data buffering device. The buffering device includes a network interface; an EMS memory connected with the network interface and used for memorizing the data requested by computational nodes; a computational node interface protocol transformation module connected with the EMS memory, used for transforming the request of the computational nodes into the request of a peripheral equipment and then submitting the request to a processing unit and used for transmitting data together with buffering memory media; a processing unit connected with the computational node interface protocol transformation module, the network interface and the EMS memory and used for controlling the transmission of data and confirming the buffering relationship of data; buffering memory media connected with the computational node interface protocol transformation module and used for buffering data according to the buffering relationship confirmed by the processing unit. The invention can reduce the independence of the computational nodes on visiting memory nodes through the network, reduce network load and reduce the network load pressure of the whole system at a given time.

The invention discloses a zero-delay disaster recovery switching method and system of an active standby source based on a content distribution network, and the method and system can be used for enabling the disaster recovery switching to satisfy the seamless switching and reducing the loading pressure of a source station. The technical scheme provided by the invention is as follows: the method comprises the following steps of: carrying out a feedback source request on edge nodes of the content distribution network; monitoring and judging a feedback source server by a node source station and sending a request to a source server; carrying out different operations based on the state of a main source server; if the main source server is normal, responding the request and continually monitoring a node source station server; and if the main source server is abnormal, finishing the response of the request by a standby source server and carrying out the disaster recovery switching.

The invention provides a rapid data recovery method and system based on crossed code correction and deletion. The method comprises the steps that calculation is performed according to an LRC encoding mode when data is written in, global encoding blocks are grouped in pairs, the global encoding blocks in each group are divided into two parts, after being subjected to exclusive-or operation, the second half part of one global encoding block and the first half part of the other global encoding block are written into the second half part of the current global encoding block, when the first global encoding block is lost, the second half part of the data block is read, the two second half parts, obtained before the exclusive-or operation is performed, of the lost data block are obtained, the first half part of the lost data block is obtained after the second half part, obtained after exclusive-or operation is performed, of the other global encoding block is subjected to exclusive-or operation, the data obtained before exclusive-or operation of the lost data block and the first half part of the other global encoding block are subjected to exclusive-or operation to obtain the second half part of the lost data block; the data is brushed back to a corresponding magnetic disk in a stripe mode to be stored, and after the data is written into a storage server, asynchronization longitudinal encoding calculation is performed.

An embodiment of the present invention provides a message processing method and device, and an electronic device. A plurality of timing queues are provided, and the plurality of timing queues correspond to a plurality of preset delay levels respectively. The message processing method includes: receiving a timing message, and writing the timing message into a data file; storing index information ofthe timing message in the corresponding timing queue according to the delay level of the timing message; separately monitoring the plurality of timing queues to determine whether there is a timing message that satisfies a preset delivery condition; delivering the index information of the timing message that satisfies the preset delivery condition to a target queue if there is a timing message that satisfies the preset delivery condition so as to allow the user to acquire the timing message that satisfies the preset delivery condition through the index information. The invention improves the timing message stacking capability, and when the number of timing messages is large, the timing message delay errors can be reduced, and the timing messages are guaranteed to be delivered on time to agreater extent.

The invention provides a distributed cache method based on Redis. The method comprises the following steps: 1, a client establishes a connection with a healthy access point; 2, the client initiates aread / write request to a certain access point, and the access point forwards the read / write request to a target data slicing node after receiving the read / write request; 3, the target data slicing nodeprocesses the read / write request and returns result information to an access machine, and then the access machine returns the result information to the client; 4, an application center, an access machine cluster and a Redis cluster aggregate monitoring indicator data into a monitoring data storage center, a monitoring module analyzes and reports the data to a monitoring center of an external component. 5, a management module provides management configuration for a configuration cluster, the access machine cluster and the Redis cluster, and provides a unified management portal and a visible page; and 6, a synchronization center obtains the data through a unified data access layer and synchronizes the data to the Redis cluster through the access machine cluster. The distributed cache method provided by the invention has the advantages of facilitating the distribution of applications.

Recovery of an Internet Protocol (IP) address allocated to a client using Dynamic Host Configuration Protocol (DHCP) is provided. Media Access Control (MAC) address and the IP address of the client are stored. When the client is determined as being offline, MAC address and IP address of the client are determined and a DHCP release message carrying the IP address of the client is sent to an address allocation server. The client is determined as being offline based on a shutdown status of a port to which the client is connected. The port may be on the relay device, or an access device that connects the client and the relay device.

The invention discloses an asynchronous caching method, server and system, and relates to the technical field of caching. According to the technical scheme provided by the invention, data requested by a user are read from the asynchronous caching server and a source server, and are returned to the user, asynchronous caching data is formed by setting logic expiration time for source data while a response to a user request is completed, and the asynchronous caching data are stored into the asynchronous caching server, so that the update of the asynchronous caching server is realized; and meanwhile, whether the asynchronous caching data expire or not is judged by taking the logic expiration time as a reference, the source data are read after the asynchronous caching data expire, and the update is performed again in the asynchronous caching server. Through the two-time update of the asynchronous caching data, it can be ensured that 80%-90% of user requests only need to access to the asynchronous caching server and do not need to read the source server. With the adoption of the technical scheme provided by embodiments of the invention, the availability and stability of a system can be remarkably improved.

The invention relates to a method for quickly building online company, wherein it comprises that: user terminal of local network sends online company build request to the group server with online company information; said group server based on said information builds group and group structure, and feedbacks response message to the user terminal; the user terminal sends inform about access invitation to other user terminal of local network; the user terminal receives said inform and prompts user to select access or not into the online company. The invention also provides a method for accessing into online company. The invention can save bandwidth and reduce cost.

The invention discloses a multicenter data task processing method, a multicenter data task processing device and a multicenter data task processing system. The processing method comprises the steps: A, collecting data task information; B, generating a data task model graph according to the data task information, cutting the data task model graph, namely grouping all nodes in the data task model graph, wherein each node of the data task model graph is one data task; and C, allocating data tasks of different groups into corresponding data centers. By means of the multicenter data task processing method, the device and the system, through the establishment of a model reflecting the correlations among data tasks, multicenter task allocation is performed based on the model, and thus the task allocation is visual, accurate and balanced. Transfer and redundancy of large amount of data are avoided, data volume transmitted among each center is small, therefore pressure of network load is reduced, overall data processing efficiency is improved, and loads in all the data centers are basically the same.

The invention discloses a peer-to-peer network caching system based on an Ares protocol and a method for realizing the system. The system comprises a protocol analyzer, an index server and a caching server, wherein the protocol analyzer is used for recognizing a Hash search request message according to a deep data packet detection technology, analyzing the message, extracting a source address, downloading resource identification information and transmitting the information to the index server; the index server is used for returning information such as a searched Intranet node list owning a resource, the list address of the cache server and the like; the protocol analyzer is used for configuring a Hash search return result message according to the returned information and transmitting the result to an Ares client, so that a peer-to-peer network user can download resources from an Intranet node and the caching server; and if needed file information is not inquired in the index server, the protocol analyzer is informed of not processing the Hash search request message of the user, the caching server is informed of downloading a file to be shared by an Intranet user, and an index service module is informed of updating the information after the file is downloaded.

The invention discloses a method for data synchronization between heterogeneous relational databases. The method comprises the following steps of: respectively determining a synchronous source data, asynchronous target database, database types and referred database table according to business demands; compiling a function code of a synchronization service and packaging a deployable jar file; respectively erecting Tomcat services at the source database and the target database, deploying and constructing an independent message queue service queue and establishing a synchronization recording table in the source database; compiling a trigger script and executing the trigger script in a source database engine; periodically querying the synchronization recording table, obtaining non-synchronized records in batches, packaging the records and delivering the packaged records into the message queue service queue; after a synchronization service A is successfully delivered, modifying the synchronization recording table; and periodically pulling synchronization records from the message queue service queue in batches by a synchronization service b, analyzing the synchronization records and executing the synchronization records to realize synchronization. The method for data synchronization is capable of supporting Sqlserver, Oracle and Mysql, and adopts protogenetic trigger mechanism of relational databases without using too much middleware or third-party software.

The invention relates to a network connecting method of a mobile communication device terminal, in particular a network automatic switching method for the mobile communication device terminal. The method comprises the following steps of: (11) executing a step (12) while detecting that a base station to which the current mobile communication device terminal is accessed is changed from a non-first base station to a first base station; (12) judging whether a historical available WLAN (Wireless Local Area Network) exists under a base station vector ID of the first base station, and if so, executing a step (13), and otherwise, executing the step (11); and (13) switching the mobile communication device terminal to the historical available WLAN. The invention is applicable to the mobile communication device terminals like mobile phones, handheld networking devices and ubs (Universal Serial Bus) networking cards, can save GPRS (General Packet Radio Service) dial-up networking cost and reduce a load pressure of a mobile base station because the terminals automatically select the WLAN for access.

The invention provides a control system and a control method for photovoltaic auxiliary grid-connected power generation. The system comprises a direct current voltage boosting module, a direct current limited power voltage transformation module, a grid-connected inverter, a direct current compensation module, an alternating current inverse module, an alternating current switching module, a monitoring module and a control module. The method comprises the following steps that a photovoltaic module is opened to perform power generation; whether a public supply network loses power is judged, if the public supply network loses power, the photovoltaic module is used for independently supplying power to a user load; if the public supply network does not lose power, and the generated energy of the photovoltaic module is larger than that of the user load, the photovoltaic module is used for independently supplying power to the user load, at the same time, surplus electric energy is input into the public supply network in a grid-connected way; and if the generated energy of the photovoltaic module is smaller than that of the user load, the public supply network performs direct current compensation to electric energy output by the photovoltaic module. By adopting the control system and the method, the energy use efficiency is high during photovoltaic power generation, and the system is stably operated.

The invention relates to a direct-broadcast flow transmission method and apparatus. The method comprises: a current state of a client is obtained; on the basis of the obtained current state of the client, statistics of a ratio of the number of clients in a freezing state to the total number of clients is carried out; when the ratio exceeds a first threshold value, a current code rate of a direct-broadcast flow is obtained; and when the current code rate is higher than a predetermined code rate threshold value, the client is notified to adjust a transmission strategy to improving the transmission capability and enhance a proportion of direct-broadcast flow data obtained by the client from a content distribution network (CDN) server to direct-broadcast flow data obtained by a point-to-point (P2P) data transmission mode. According to embodiments of the invention, the transmission strategy of the client is adjusted based on the direct-broadcast flow code rate and the client state, so that the service and bandwidth resources are saved and the direct broadcasting smoothness is guaranteed.

The invention relates to a multi-level load forecasting and flexible cloud resource configuring method and a flexible cloud resource configuring system based on monitoring and forecasting. According to the multi-level load forecasting and flexible cloud resource configuring method and the flexible cloud resource configuring system based on monitoring and forecasting, a cloud resource monitoring system is of a two-layer structure, the complexity of the cloud resource monitoring system is reduced, and the load pressure of a single monitoring server is reduced. In a load forecasting process, a forecasting algorithm with the lower time complexity is utilized. Thus, the system resource forecasting cost is reduced. In a flexible resource configuring process, a multi-level forecasting and resource configuring mechanism is utilized to dynamically adjust cloud resources in different time accuracy. Thus, the utilizing rate of the cloud resources is improved.

The invention discloses a method and a device for acquiring the on-line state of a terminal, which relate to the technical field of electrical communication and are invented for solving the problem of high load pressure of a database. The method comprises: detecting the on-line state of a terminal, wherein the on-line state comprises an "on-line" state and an "off-line" state; comparing the current on-line state with the on-line state detected last time; if the on-line state of the terminal is changed, modifying state information of the terminal; and sending the modified state information to a database. The method and the device are mainly applied to a process of acquiring the on-line state of the terminal.

The invention provides a distribution thought based message service middleware system used for distribution and forward services of various messages and aiming to lower pressure of a server for receiving message request tasks and improve efficiency of processing different request tasks of multiple requesters on the basis of application services. The system comprises a message service subscription module (1), a message service distribution module (2) and a message service release module (3). By the system, the problem that subscribers frequently find addresses of different service providers and even cannot find out the addresses of the service provides can be solved; number of times that the server receives the request tasks can be reduced effectively, probability of repeated data release is lowered, and data release efficiency is improved effectively; the problem about the bottleneck of massive request task processing of the server is solved.

The invention provides a boiler coal combustion-improving desulfurizing agent composition. The composition comprises the following components in parts by weight: 3-9 parts of sodium carbonate, 1-2 parts of sodium acetate, 3-9 parts of calcium carbonate, 4-9 parts of aluminium hydroxide, 2-5 parts of ferric trichloride, 3-10 parts of ferric oxide, 8-22 parts of potassium permanganate, 8-22 parts of potassium chlorate, 15-40 parts of activated attapulgite clay, 7-13 parts of manganese oxide, 4-8 parts of copper oxide, 4-8 parts of alumina, 3-8 parts of copper carbonate, 3-10 parts of zinc oxide, 3-10 parts of zinc nitrate, 4-11 parts of sodium dichromate, 0.5-1.5 parts of barium molybdate, 0.5-1.5 parts of vanadium pentoxide, 0.2-0.5 part of cerium oxide and 1-3 parts of dispersing agent JFC. The composition is an additive suitable for coal-fired boilers in the petroleum, chemical, power, thermoelectricity and metallurgy industries, can absorb and solidify sulfur dioxide generated in the combustion process, adsorbs dust and other harmful substances in quantity and simultaneously removes smoke dust scales and jelly adhering to the inner walls of combustors, thus inhibiting the concentration of flue gas emission.

The invention discloses a data updating method, a distributing node and a mass storage cluster system. The distributing node comprises an order control module and a distributing module, wherein the order control module is used for receiving an updated order sent by a thread receiving and managing device; and the distributing module is used for reading the updated order from the order control module via a plurality of reading threads, and respectively distributes data to the corresponding data nodes according to the updated order. The data updating method, the distributing node and the mass storage cluster system are characterized in that only one updating thread is required to receive the updated order, thereby avoiding the lock problem that multiple threads are simultaneously updated in the prior art, and improving the integral processing efficiency of the system. Meanwhile, a plurality of reading threads read the updated orders, data are distributed to a plurality of updated orders simultaneously, and the data distributing efficiency is improved.