258results about How to "Prevent overload" patented technology

The invention provides an information polling method, apparatus and system thereof, wherein a message gateway receives an information polling request from an application in an application client, and according to the received information polling request, the message gateway acquires at least one message requested by the application and calculates a reference polling cycle of the application, and sends the acquired message requested by the application and the reference polling cycle to the application. The application determines a polling cycle of a next poll according to a load condition of the application client and the received reference polling cycle. According to the invention, efficiency and quality of the information polling is improved, while the system is ensured to run normally, reducing the cases of message blocking and system breakdown which may occur in the existing situations.

The invention relates to a pipeline detection robot. The pipeline detection robot mainly comprises a laser detection mechanism (1), a traction mechanism (2), an electromagnetic ultrasonic detection mechanism (3) and an electronic cabin (4), all of which are connected through connecting hinge shafts; the traction mechanism (1) adopts a single-motor all-drive mode and is driven by a turbo-worm synchronous belt to supply a walking power to the robot; the laser detection mechanism (2) comprises a laser displacement sensor, a rotating arm, a counterweight, a support body and the like and is used for measuring surface corrosion and deformation of a pipeline; the electromagnetic ultrasonic detection mechanism (3) comprises a support assembly, a probe and a fixing plate and is used for measuring the wall thickness and the crack defect of the pipeline; the electronic cabin (4) is used for carrying auxiliary components, such as a stepping motor controller, a servo motor driver, a power supply and an FPGA (Field Programmable Gate Array) control panel. The pipeline detection robot disclosed by the invention can be used for finding the defects, such as pipeline corrosion, cracks and deformation, carrying out in-service detection on an oil and gas pipeline in a working process, carrying out targeted repair, maintenance and replacement according to a detection result, reducing the maintenance cost and guaranteeing safe and stable operation of the oil and gas pipeline.

A dust collection unit for a vacuum cleaner includes a dust collection container for collecting foreign objects contained in air introduced therein, covers defining a top and bottom of the dust collection container, and a filter-cleaning unit having a plurality of brushes rotating around the porous filter unit to remove the foreign objects clogging the outer surface of the porous filter unit.

Disclosed is a clothes dryer having a heat pump, the clothes dryer capable of enhancing energy efficiency by recovering waste heat to the maximum in correspondence to a capacity of the heat pump, capable of enhancing reliability by preventing overheating of a compressor and a heat exchange means, and capable of shortening drying time. The clothes dryer includes a body, a tub rotatably installed in the body, a suction duct installed at the body, and configured to suck external air and to supply the external air into the tub, an exhaustion duct configured to exhaust air having passed through the tub to outside of the body, and a heat pump having a heat exchange means for recovering waste heat by heat-exchanging air passing through the exhaustion duct, wherein part of the air exhausted via the exhaustion duct is heat-exchanged with the heat exchange means of the heat pump.

The embodiment of the invention discloses a multi-carrier peak clipping module which can carry out peak clipping processing to a multi-carrier non-main BCCH carrier according to the input power control information of each carrier of a next time slot so as to obtain the output power of the next time slot of each carrier after the peak clipping and further obtain the new power control information of each carrier of the next time slot. The embodiment of the invention also discloses a multi-carrier control method and a base station. By not carrying out the peak clipping to the main BCCH carrier in a GSM multi-carrier channel, the method for carrying out the peak clipping processing to the non-main BCCH carrier can reduce the total output power of a multi-carrier power amplifier under the condition that the power exceeds ration, thus forming stable GSM network coverage when protecting the reliable operation of a main device so as to guarantee the performance stability of the GSM network.

The invention provides a scheduling method and device of CDN servers. According to elements in an acquired resource request, server scheduling information corresponding to the resource request is determined, and therefore the corresponding CDN servers are distributed to users according to the server scheduling information. According to the scheme for scheduling the CDN servers, on one hand, an existing mode that the CDN servers are scheduled only according to the IP addresses of the users can be expanded, so that more differential scheduling modes are achieved; on the other hand, division of the users of the CDN servers can be achieved, overload of the CDN servers is avoided, and the purpose of load balancing is achieved.

A lossless encoder and decoder are provided for transmitting a multichannel signal on a medium such as DVD-Audio. The encoder accepts additionally a downmix specification and splits the encoded stream into two substreams, such that a two-channel decoder of meagre computational power can implement the downmix specification by decoding one substream, while a multichannel decoder can decode the original multichannel signal losslessly using both substreams. Further features provide for efficient implementation on 24-bit processors, for confirmation of lossless reproduction to the user, and for benign behaviour in the case of downmix specifications that result in overload. The principle is also extended to mixed-rate signals, where for example some input channels are sampled at 48 kHz and some are sampled at 96 kHz

A method and base transceiver station (BTS) for preventing paging channel overload in a wireless communication system. Paging channel occupancy level is measured and compared to different threshold levels. Each threshold level is associated with one or more types of paging messages. If the measured occupancy level of the paging channel reaches a first threshold level of occupancy, the BTS switches to a state in which the BTS allows initial transmission of paging messages of a first type but blocks retransmission of paging messages of the first type. If the measured occupancy level of the paging channel reaches a second threshold level of occupancy, the BTS switches to a second state in which the BTS allows initial transmission of paging messages of the first type and paging messages of a second type but blocks retransmission of paging messages of the first type and paging messages of the second type.

The embodiment of the invention provides a CDN file storage method, a file distribution control center and a system thereof, and relates to the field of network multimedia technology. According to the invention, reasonable storage modes can be flexibly allocated for files according to types of the files. Thus, visit pressure of a content distribution system is balanced; system resources are utilized reasonably; network congestion is relieved; system overloads are avoided; and performance of a CDN system is raised. The method comprises the following steps: the file distribution control center acquires files to be stored; the file distribution control center judges types of the files to be stored; if the files to be stored are cold-spot files, the file distribution control center sends a first file storage message to a storage node so as to make a server of the storage node store the cold-spot files; and if the files to be stored are hotspot files or ultra-hotspot files, the file distribution control center sends a second file storage message to the storage node and an edge node so as to make the storage node and the edge node store the hotspot files or ultra-hotspot files.

The invention relates to a packet switched mobile telecommunication system, a rate controlling means in said system, a method and a computer program product. The system comprising at least a first rate controlling means residing in a Radio Controlling Entity, RCE, arranged for controlling bit rates of a first radio link to a first mobile terminal and a second rate controlling means arranged for controlling bit rates of a second radio link to a second mobile terminal. The first rate controlling means comprises means for notifying the second rate controlling means about a change of the bit rates of said first radio link, the first and the second rate controlling means comprise means for negotiating a corresponding change of the second radio link layer bit rate, and the first and the second rate controlling means comprise means for notifying their respective mobile terminals to modify their application layer bit rates accordingly.

The invention discloses a dynamic upstream and downstream flow unloading method and system based on heterogeneous network convergence, and relates to the field of heterogeneous network convergence. According to the method, a convergence protocol frame is built, a refined adjusting and controlling mode on a multi-mode base station side is adopted, upstream data multiplexing and downstream data demultiplexing between different heterogeneous network links are carried out, combined dispatching and control over resources between different wireless access network system are achieved, network overloading is avoided, and the service experience of users is improved.

A headlamp is provided with a lamp unit provided in a lamp housing formed by a lamp body and a transparent cover for covering a front side of the lamp body. The lamp unit is supported in the lamp housing in a suspending state in such a condition that the lamp unit can be swung in vertical and horizontal directions. An output shaft coupled to a lower end of the lamp unit can be rotated around its axis and slide in a direction perpendicular to the axis. A rotation of the output shaft around its axis is transmitted to the lamp unit. By a movement of the output shaft in the direction perpendicular to the axis, a rotation between the output shaft and the lamp unit causes.

The invention relates to bolt tightening devices, in particular to a torque-control multishaft bolt tightening machine which comprises a driving device, a gear box, an intermediate shaft, torque limiters and a tightening head, wherein one end of the intermediate shaft is connected with the driving device, and the other end penetrates out of the gear box; the outputs of the gear box are provided with transmission shafts, each transmission shaft is connected with an output shaft through the torque limiter, the other end of each output shaft is provided with a fixed plate, the output shaft at the end is connected with one end of a universal shaft after penetrating through the fixed plate, the other end of the universal shaft is connected with a template, and the tightening head is connected with the universal shaft through the template; and the template is provided with a limit switch, and one side of the limit switch is provided with a sensor fixedly connected on the template. The invention has the advantages of high efficiency, simple structure, high integration level, strong adaptability, wide application range and the like, and can realize multiple functions of reverse rotation, control on magnitude of moment, speed regulation and the like.

The invention discloses a heterogeneous Hadoop cluster-based task scheduling method. According to the method, tasks in task queues in Hadoop are scheduled by considering matching degrees between eachnode and different tasks according to real-time performance of each node in clusters. According to the method, the defects that existing scheduling technology only aims at big data center isomorphismclusters, and existing scheduling algorithm is low in cluster resource utilization rate, imbalanced in cluster node load and relatively long in operation completion time are solved.

The invention relates to a bolt tightening force coefficient measuring method, and especially is suitable for tightening force coefficient measuring of an iron tower galvanizing bolt. The method comprises the following steps: demarcating a pressure transducer, connecting an iron tower bolt tightening force coefficient simulation testing device, installing the simulation testing device in a tensile testing machine, acquiring pre-tightening force data, and calculating a tightening force coefficient. The method can be realized in a laboratory; the operation is easy; the test result is accurate; and the guiding significance is provided to the iron tower integral structure and stability assessment.

The invention discloses a safety automatic control method suitable for a main transformer of a transformer station during the tripping process. The method is characterized in that on the transformer stations with three and more running main transformers, the buses at the high-voltage sides of the main transformers run in parallel, and the buses at the middle and low voltage sides of the main transformers run in parallel; after the electrical characteristics of the main transformers and the buses meet the charging conditions of spare power automatic switching, the spare power automatic switching is enabled, and if the main transformers trip at the moment through detection, the spare power automatic switching of the transformer station is realized according to the running modes of the main transformers and the bus-tie circuit breakers or the section switches at the medium-voltage sides or the low-voltage sides of the main transformers; and when the electrical characteristics of the main transformers and the buses meet the discharging conditions of spare power automatic switching, the spare power automatic switching of the transformer station is locked. The invention has the advantages that the method can effectively solve the problems of capacity release of the main transformers of the transformer station and the reliability of power supply of the transformer station during the process of trip fault of the main transformers.

The invention discloses a method and device for distributing a resource acquisition request, and belongs to the technical field of data transmission. The method includes the steps: receiving a resource acquisition request of a target service resource, determining the resource attribute of the target service resource; selecting a target cache server in the background service system according to theidentifier information of the target service resource when the resource attribute is a static non-hotspot resource; selecting the target cache server according to real-time load conditions of all cache servers in the background service system when the resource attribute is a dynamic resource or a static hotspot resource; and sending the resource acquisition request of the target service resourceto the target cache server. By adopting the invention, the method can improve the hit rate of the cached resource, and the cache server overload can be avoided.

The invention relates to a Charging-load space dispatching system for electric automobile and method therefor. The system comprises an electric vehicle ordered charging controller, a power dispatching unit and an electric vehicle dispatching center. Dispatching of the charging load space of an electric vehicle is achieved based on a charging request command, position information of the vehicle, and the residual electric quantity and the rated capacity of a vehicle cell, provided by the electric vehicle ordered charging controller, and also on a command about whether charging loads of all charging stations are uniformly distributed or not, provided by a power grid dispatching department. The problems of partial overloading and line congestion of power grids are solved.

The invention discloses a method of using deep learning for movie recommendation based on emotion analysis. Movie online-comments of a user and movie status information are acquired, and cleaning operations and pre-processing are carried out on movies and comment information thereof; structure and feature information extraction of data is carried out, and emotion analysis is carried out on featureinformation through deep learning; and then a user interest model is established on the basis of emotion analysis data, then interest degrees of the user on movies are calculated, and movie recommendation is carried out. According to the method, a Bagging algorithm and a bi-directional long short-term memory (Bi-directional LSTM) network are used as a method of emotion inclination analysis, subjective emotion expressed by the user in the text information is mined, the effective user interest model is constructed, accuracy of a recommendation system is improved, and quality of movie recommendation is optimized.

The invention relates to an online self-adaptive virtual resource allocation algorithm based on service prediction and belongs to the field of mobile communication. The algorithm is online dynamic resource scheduling carried out by taking the minimum network slice resource mapping cost as a target on the premise of guaranteeing QoS of virtual network slices. The service of each network slice is predicted on a large time scale through a self-regression sliding average model, and the optimal buffer space size which is reserved in the next period is selected according to the predicted maximum probability load value; and the priority of each network slice is adjusted on a small time scale according to a queue overflow probability or a residual time value of each network slice, and appropriatephysical resource blocks are allocated to each network slice to ensure the service rate of each network slice on the premise of guaranteeing the queue overflow probability of each network slice. According to the online dynamic self-adaptive virtual resource allocation method provided by the invention, the QoS of each network slice can be effectively guaranteed, and meanwhile, the resource mappingcost of the network slices is minimized.

The disclosed method includes steps: Node B broadcasts information of shared channels through broadcast channel; Node B sets up time interval of reporting dispatch information; Node B transfers serial number of shared channels through down going DPCH of UE in sequence to selected UE; after receiving serial number of shared channels, UE sends dispatch information through up going enhanced shared channel; after receiving dispatch information of all UE, Node B determines UE to be dispatched and assignation information for dispatch; the said assignation information for dispatch through EU-SCCH related to EU-SICH is sent to UE needed to dispatch. Using signaling in physical layer combines transmission format of DCH transmission of UE in subzone, the invention controls transmission time, time slot and transmission codes so as to realize quick dispatching for DCH transmission of UE in subzone.

A power output device includes a bridged output stage, a reference voltage generator and a detecting unit to compare the output voltages from the aforementioned two units. The bridged output stage may be implemented by a full-bridge or a half-bridge configuration. The reference voltage generator is symmetric to the bridged output stage to generate a reference voltage, which is served as a reference voltage range for the voltage difference of the two terminals of the turned-on transistors in the bridged output stage during operation. When the detecting unit detects the voltages across the two terminals of the turned-on transistors in the bridged output stage exceed the reference voltage range, all the transistors are turned off and no power is outputted to the load. Therefore, the circuit is capable of preventing damages caused by a large current due to overload or short circuit.

The liquid ejection head drive circuit includes: a drive voltage application device which applies drive voltage between a drive electrode and a common electrode of a piezoelectric element arranged in a liquid ejection head; a detection device which detects a current flowing in a common line which is electrically connected to the common electrode; an abnormal insulation determination device which determines a status of abnormal insulation of the piezoelectric element according to a detection result of the detection device; and a current limitation device which limits the current flowing in the common line within a prescribed range where the abnormal insulation determination device is enabled to determine the status of abnormal insulation, when the current flowing in the common line exceeds a reference value which is determined so that at least one of the detection device and the drive voltage application device is prevented from being overloaded.

The present invention relates to a method of performing register functions in Session Initiation Protocol (SIP) load balancer and an SIP load balancer performing the method, and more particularly, to a method and apparatus for registering information of a user agent in at least one real SIP server by the SIP load balancer. According to the present invention, the number of messages transmitted and received by a user agent is decreased, thereby notably reducing the amount of information processed by the user agent.

The present invention relates to a spinning device used for melting a plurality of single filaments.filaments. The spinning device is provided with a nozzle bracket and a detachable spinning nozzle assembly. The spinning nozzle assembly is held to a fusant connector of the nozzle bracket through at least one fusant inlet. For fixing the spinning nozzle assembly, a holding ring which surrounds the fusant connector is provided. The holding ring is connected with the nozzle bracket and is movably held in the axial direction relatively to the fusant connector through the spring component. Hereon, the spinning nozzle assembly and the holding ring are connected so that the fusant inlet is held to the fusant connector under the pre-tightening function caused by the spring component. For realizing enough pre-tightening force, the holding ring has screw thread at a free end, wherein the screw thread cooperates with a corresponding screw thread on the spinning nozzle assembly.

The invention discloses a marine floating type drilling riser flexible hander which mainly comprises a chuck-universal joint assembly, a motion compensation device, a guide mechanism and a hydraulic power unit. The chuck-universal joint assembly is combined by adopting an embedded structure, suspension and up-down of a water string can be achieved, and it is ensured that the chuck swings by a certain angle along with a riser; a distance-increasing type motion compensation hydraulic cylinder is adopted on the motion compensation device to drive the chuck-universal joint assembly to do compensation motion. The guide mechanism ensures that the chuck-universal joint assembly does rectilinear motion along a guide rail through sliding fit of a sliding block installed on the chuck-universal joint assembly and the guide rail, and the radial load of the riser is borne. The hydraulic power unit provides power and control for the whole device. On the basis of achieving the conventional suspension and up-down operation function, the system structure height is lowered, the riser suspension operation step is simplified, suspension time is shortened, the variation amplitude of the load in the riser is lowered, and the suspension performance and reliability of the riser are improved.

The invention provides a switching and scheduling method and switching and scheduling equipment for multiple CDN services. The switching and scheduling method and the switching and scheduling equipment monitor availability of the CDN service offering service, automatically make the abnormal CDN service be off-line from a service point and switch to the suitable CDN service for a user quickly according to server dispatching information when discovering that the CDN service offering service is abnormal and cannot offer service normally, can avoid the problems that all business is affected because the service is not available once the CDN service fails when the user only uses one single CDN service and the other CDN services cannot be switched to quickly and intelligently, and realize disaster tolerance of the CDN services; in addition, the existing CDN service switching and scheduling method is extended, thereby implementing the more intelligent and rapid switching and scheduling method; moreover, the switching and scheduling method and the switching and scheduling equipment can realize user diversion for the CDN services, avoid overload of one single CDN service, achieve the purpose of load balancing, effectively improve the utilization efficiency of system resources, and improve the quality of user experience.

The invention discloses a time-limited automatic processing method for multi-source heterogeneous mass data. The method comprises the following steps of building a data processing operation environment based on a container technology; establishing data acquisition task scheduling management; analyzing and optimizing a design data file; performing distributed parallel processing on data processing;enabling the modular design processing flow arrangement to be controllable; automatically optimizing data processing and monitoring; designing events and messages; optimizing storage and data accessdesign; optimizing data acquisition management. Through the automatic optimization design of the data processing flow and the optimization design that the process can be flexibly controlled, the analysis, processing and processing efficiency of the semi-structured data file is greatly improved, and the association and fusion efficiency of massive historical data and real-time data is greatly improved.

The invention discloses a faceted search system and method based on water conservancy object classification labels. The system comprises a label module and a search module, wherein the label module is used for carrying out classification labeling processing on a metadata object in a water conservancy resource metadatabase and simultaneously managing the classification label in the system; and the search module is used for carrying out search query on metadata information according to a search request of a user and faceted selection. The faceted search system and method provides a "label" management function for a water conservancy information resource catalogue service system on the basis of the water conservancy information resource catalogue service system and carries out faceted search expansion on the simple search of the water conservancy information resource catalogue service system so as to lower the requirements of the user on knowledge in a relevant field, avoid the problem that user search gets lost and improve search efficiency.

The invention discloses a streaming media system of Internet network TV, comprising: a live media distribution unit, used for generating streaming media during live broadcast service; a media storage and transmission unit, used for storing and transmitting the streaming media generated by the live media distribution unit; And a media control unit for managing the streaming media generated by the live media distribution unit and stored and transmitted by the media storage and transmission unit. Simultaneously, the invention also discloses a method for creating the streaming media system of the Internet network TV by the streaming media system. Through the present invention, the overload of a certain IPTV streaming media server is avoided, the performance of the IPTV system is improved and the construction cost of the system is reduced, which helps to increase the income of IPTV operators, improves customer satisfaction and retains customers, and is beneficial to IPTV business development and promotion.