53 results about "Local failure" patented technology

In one embodiment, a system comprises a plurality of nodes. On each node, a storage virtualization component may receive the I / O operations generated from local applications on the node. The storage virtualization component may transmit the I / O operation, and detect any failures that occur in the I / O operations. If a failure is detected, the storage virtualization component may cooperate with other storage virtualization components on other nodes to successfully complete an I / O operation that experiences a failure. In one embodiment, if the I / O operation is successful on a remote node, the storage virtualization component may migrate the application that sourced the I / O operation to the remote node. In other embodiments, the storage virtualization component may monitor I / O operations and migrate the application after a pattern of local failures and successes on the remote node.

Alternate multicast / broadcast paths may be calculated in a routed network to enable broadcast / multicast traffic to be transmitted around a local failure in the routed network until the routing system reconverges on a new network topography. According to an embodiment of the invention, the nodes on a multicast tree or a broadcast tree may compute alternate paths for each of the downstream nodes in the multicast / broadcast tree or for select nodes in the multicast / broadcast tree. The select nodes may be those nodes that have advertised membership in the multicast or a set number of hops downstream on the branch affected by the failure. The alternate paths may be unicast paths from the node to the other nodes on the multicast / broadcast tree. U-turn nodes may be used where there is no regular loop-free alternate network path to a node on the downstream multicast / broadcast tree.

The invention relates to a heating element (20), in particular for heating user contact surfaces of a passenger compartment of a vehicle, comprising at least one heating area (100) wherein at least one electric conductor strand (1), which is used to heat, is arranged, at least one additional conductor strand (2) which is used to feed electric energy into at least one conductor strand (1) which is used to heat the heating area (100), at least one contact area (200) wherein the conductor strand (2), which is used to feed electric energy, is connected in an electrically conductive manner to the at least one conductor strand (1) which is used to heat the heating area (100). According to the invention, at least one additional conductor (3) which forms at least one part of an electrically bridging line which bridges the failure point on a failure point during local failures of at least one of the conductor strands (1, 2), is provided.

Fault tolerance is provided in a distributed system. The complexity of replicas and rollback requests are avoided; instead, a local failure in a component of a distributed system is tolerated. The local failure is tolerated by storing state related to a requested operation on the component, persisting that stored state in a data store, such as a relational database, asynchronously processing the operation request, and if a failure occurs, restarting the component using the stored state from the data store.

The invention relates to a system for managing contents of a plurality of websites at the same time, which consists of a plurality of subsystems; the subsystems can be connected in a loose coupling manner according to the logic; each subsystem comprises a safety management system, an operation management system, a content management system and a website management system; and each subsystem comprises a plurality of modules. According to the system, the updating of contents, frames, expression styles and the like of large and medium websites and the right management control of operating users are achieved, the combination of function separation and loose coupling in the system is realized through modular design, and certain local failures do not affect the normal work of the other parts.

In one embodiment, a system comprises a plurality of nodes. On each node, a storage virtualization component may receive the I / O operations generated from local applications on the node. The storage virtualization component may transmit the I / O operation, and detect any failures that occur in the I / O operations. If a failure is detected, the storage virtualization component may cooperate with other storage virtualization components on other nodes to successfully complete an I / O operation that experiences a failure. In one embodiment, if the I / O operation is successful on a remote node, the storage virtualization component may migrate the application that sourced the I / O operation to the remote node. In other embodiments, the storage virtualization component may monitor I / O operations and migrate the application after a pattern of local failures and successes on the remote node.

Techniques are disclosed for implementing wireless fallback of wireline service. Network interface units [405] may be installed in subscriber buildings in a residential or business neighborhood. The NIUs [405] may include a wireless transceiver [407] and a switch [410]. During normal operation, the switch provides the subscribers with wireline network connectivity. In the event of a local failure of the wireline connectivity, the NIUs may provide fallback network connectivity through the wireless transceiver [407], which communicates with other wireless transceivers installed at other local subscriber locations.

The invention discloses a self-repairing system and a self-repairing method for an optical fiber distributed sensor network. The system consists of a plurality of optical fiber grating sensors, a self-repairing controller, an optical fiber grating demodulator and a PC. The method is to arrange the self-repairing controller inside an optical fiber network, judge local failure of the optical fiber network after damage by a granularity calculation method, and perform recombination repair on a failed local network by a graph theory method so as to guarantee that the optical fiber network can be operated normally when partial optical fibers fail locally. When an optical fiber sensing system is damaged and partially fails, the self-repairing system and the self-repairing method can automatically recombine the network and repair the functions of the network, make an intelligent material structure capable of realizing self-repairing, and improve the reliability of the optical fiber intelligent structure in engineering application.

The invention provides a method and a device for realizing data pre-fetching. A pre-fetcher device comprises: a memory access mode recognition unit divides a global failure address flow into a local failure address flow, records information of two addresses with caching failure happening lately in the local failure address flow as history memory access information according to a time sequence, and captures a spanning memory access mode according to the record and generates a corresponding pre-fetching address. According to the invention, the storage utilization efficiency of a difference value related pre-fetcher is improved and the redundancy pre-fetching having no contribution to pre-fetcher performance improvement is reduced, so that the pre-fetcher can obtain a better performance optimization effect under the condition of same storage expense, and the cached bandwidth requirement and power consumption expense on a pre-fetcher access sheet are reduced effectively.

The invention discloses a connection node construction of a concrete-filled square steel tube column and a rectangular section steel beam. The connection node construction is formed by the concrete-filled square steel tube column, the rectangular section steel beam, a right-angle connecting plate, a T-shaped triangle rib plate, a high-strength bolt, and a toggle pin on the top face of the steel beam. The connection node construction is simple, and the stress is clear. The amount of the steel for the connection node construction is less, and the connection node construction is only installed at one side of the column provided with the beam, so the composite cost is lower. The design of the beam column connection node is the ductile failure mode that the beam end is damaged by the tension, the obvious symptom and the duration time are existent before the damage, and the whole structure cannot be collapsed by the local failure. The connection of the steel beam and the concrete-filled steel tube column is firm, the integrality is good, the node rigidity is large, the assembly is simple and the construction period is short. New building rubbishes are not generated, and the requirements of housing industrialization and environmental protection are satisfied. The connection node construction is a novel node connection mode suitable for the connection of the current lower-layer and multi-layer light steel frame housing construction beam columns.

A system for sorting and classifying users of an image information management system is disclosed. The system for sorting and classifying users of an image information management system according to the present invention comprises some identical sub-systems, and every two sub-systems are interconnected. The sub-system comprises a user information encoding module, a user information decoding and authority identifying module, a user sorting module, a user classifying module, a command performing module, an authorized user collection database and a resource information database. The resource information database comprises real-time images, history images and control right commands of cradle heads and lens of cameras. The present invention resolves the problem of ordered accessing and utilizing of image information in a super-large-scale advanced real-time monitoring information management system, and realizes the object that local failures do not affect the normal work of the other parts by connecting every two sub-systems to each other and arranging the user identification entrance in each one of sub-systems.

The invention belongs to the technical field of structural engineering, in particular to a large height-width ratio combined steel plate shear wall; the large height-width ratio combined steel plate shear wall comprises a frame beam, concrete slabs and steel plates, and is characterized in that: the middle parts of the steel plates are weakened, which causes the cross sections of the middle parts to be smaller than those of connecting parts at two ends; the height to width ratio is more than 1; in order to prevent excessively centralized stress, transition zones are respectively arranged at variation parts of the cross sections of the middle parts and the two ends of the steel plates; the steel plates are connected with the concrete slabs through bolts. By adopting the large height-width ratio steel plate shear wall, the need for arranging walls among the windows in the buildings is met, and components are mainly bent rather than sheared in structure. The steel plates are connected with the concrete slabs through bolts, the steel plates with large height-width ratio are limited by the concrete slabs, and the cross sections of the middle parts of the steel plates with large height-width ratio are weakened, thereby avoiding local failures of the supports occurs before the whole steel plates are bent, and ensuring an excellent ductility. The large height-width ratio steel plate shear walls can be widely used in the residential systems with various architectural layouts and multi-story steel structures.

The invention belongs to the technical field of data privacy protection, and discloses a privacy protection method based on data confusion between users and a terminal data aggregation system. Data aggregation is completed by participating in matching and data mixing between users. And the users are paired through an authentication center, and part of information segmented by the users is interacted for mixing and uploaded to an aggregation center for matching and aggregation. Each participant user is semi-trusted, and data aggregation is completed under the condition that individual information is not leaked. Compared with a homomorphic encryption data processing method, the method has the characteristic of simple calculation, the problem of aggregation failure caused by failure of a certain link is solved, and the aggregation of other parts is not influenced by local failure. Compared with a secure multi-party computing method, an additional server is not needed, it can be guaranteedthat an aggregation center is not conspired with users, and information leakage is prevented.

The invention provides a method for analyzing a shale fracturing mode based on a digital image. The method comprises the following steps: characterizing the heterogeneity of shales caused by the shape, size and distribution of calcite minerals in the shales by using a digital image processing technology on a microscopic scale, mapping the heterogeneity to finite element grids, establishing a numerical model which can accurately reflect the micro structure of the shales in combination with a rock fracturing process analysis system RFPA2D-DIP based on a micro structure, implementing uniaxial compression numerical tests on the shales by using the model, and studying the influence of the micro structures of the shales on the compressive strength and destroy modes of the shales under the load in different directions. Therefore, the problem that the stress distribution heterogeneity caused by the own heterogeneity of the shales on a microscopic scale and the local failure caused thereby is rarely involved in the existing studies on the compressive strength and destroy modes of the shales, and the nature of brittle failure mechanisms of the shales is hard to get can be solved. The method provided by the invention belongs to the field of rock mechanics.

The invention discloses a photovoltaic system fault arc detection method under the common-mode signal interference condition. The nonzero differential signal output between adjacent photovoltaic clusters through gain calibration, the situation that input signals of a direct-current fault arc detection device are influenced by differential factors except the fault arc events is excluded, detection signals between any adjacent photovoltaic clusters of a photovoltaic system are processed through differential conversion, the fault arc detection is conducted through the direct-current fault arc detection device by means of the differential signals, fault photovoltaic modules are cut off when fault arcs happen, and the photovoltaic system unceasingly runs till the balance gain exceeds the set range. The method solves the problem that when the direct-current fault arc detection module detects the electricity quantity of a normal line, due to the influences of common-mode signals, maloperation is caused. It is avoided that the full system stops running when local fault arcs happen, and the fault arc positioning and protecting capacity of the system under the interference of the common-mode signals is improved.

The present invention discloses a double-reflecting surface satellite antenna rotation missing area tracking system and method for solving the problems existing in the automatic tracking system of a satellite antenna. The system comprises a main reflecting surface, a sub-reflecting surface, and a feeding source wherein the main reflecting surface is provided with a servo tracking unit and a main control unit. The main reflecting surface, the sub-reflecting surface and the feeding source are arranged concentrically with either the main reflecting surface or the sub-reflecting surface capable of rotating around an axis and provided with a rotation mechanism; the rotating main reflecting surface or the sub-reflecting surface is provided with a signal local failure region in a biased manner. Compared with step tracking, the system and the method of the invention has high precision and responds quickly. In contrast with cone scanning and tracking, the main reflecting surface and the sub-reflecting surface are coaxially arranged, which reduces the side lobe, interference from adjacent star and increases the applicability. Compared with mono-pulse, through the use of a signal local failure region for rotation and biased signals, it is possible to obtain sinusoidal like signals whose type and strength change periodically. Simple in structure, the manufacturing cost of the system is also low.

The invention discloses an Ethernet tunnel subsection protection method, which comprises that: a domain edge bridge (DEB) sends connectivity check message to the DEB of the opposite end through a main section and a dead section in a protective area to perform state detection respectively; and when the main section or the dead section occupied by traffic transmission fails, the DEB executes protective switching of traffic by state detection of the main section and the dead section in the protective area. The invention also discloses an Ethernet tunnel subsection protection device. The method and the device effectively realize Ethernet tunnel subsection protection, only protect the partial sections to be protected, and solve the disadvantage that the whole Ethernet tunnel is switched in local failure in the prior art so as to improve the utilization rate and the reliability of the network; and the method and the device have good flexibility on networking implementation protection, and meet the requirement of actual networking.

The invention provides a non-deadlock self-adaptation routing method based on a fault-tolerant computer network structure. The method includes the following steps: numbering each node in the fault-tolerant computer network structure, and setting a span direction of a link for each link according to numbers of an initial node and an arriving node of each link; determining shortest paths from source nodes to target nodes according to the numbers of the source nodes and the target nodes, and using the shortest paths as initial alternative paths; judging if each node is a local safe node, and generating a local failure information table; screening the initial alternative paths according to a negative priority strategy and the local failure information table of each node, if a useable transmission path exists in the initial alternative paths, using the transmission path; if a useable transmission path does not exist, finding a transmission path by adopting a detouring route selecting strategy. Under the condition that a virtual channel is not used, the non-deadlock self-adaptation routing method can effectively avoid deadlock, improves routing efficiency, and improves robustness and stability of the computer network structure.

A structurally efficient rod-stiffened panel incorporating pretressing benefits is provided, the prestress provided by pultruded rod which is already in the system. The pultruded rods being retained in either tension or compression stresses apply prestressing via interfacial behavior. The new system improves the efficiency of structural composites by tailoring the stress system within structure to fully utilize the structural potential of various components, and to avoid premature local failures within composite structures. A method for producing a prestressed rod stiffened composite structure is also provided.

The present invention provides a method for on-line controlling the successive failure of a large electric network and chain failure of different location. The system of the invention comprises a dispatching central station, a main control station, a control substation and a control actuating station. The dispatching central station on-line calculates the control strategy and transmits to the main control station. The main control station takes charge of the determination to the failure of different location and the coordination of the control strategies. The control substation takes charge of the determination and control of the local failure. The control actuating station takes charge of the actuating of the control strategy. The control substation and the control actuating station execute the area control. The main control station executes the control to the failure of different location and coordination of the insufficiency of the area control quantity. The dispatching central station takes charge of the calculation of the on-line control strategy and the coordination of the control strategies between different main control stations. The invention adopts an on-line control framework of ''centralized coordination and layered control''. The determination and control coordination of the successive failure and chain failure of different location are effectively realized. The on-line control to the successive failure of large electric network and chain failure of different locations are realized.

In one process, a mechanical stress (quasi-static or dynamic) or thermal stress is introduced into a local area of a structure where damage is suspected. A standard (or high speed for some dynamic stress approaches) video recording is made of the area under test. The video is processed using a motion amplification algorithm which magnifies extremely small motions. The motion amplification can reveal strains (for static or thermal loading) or wave patterns (for dynamic loading) generated on the surface of the part. If there is damage or structural change, the resulting surface strains will indicate it, or the surface waves in that area will change in phase, amplitude, or both, and will be indicated in the video images. In another process, motion magnification is used to highlight local failure events during structural testing.

The invention discloses an intelligent health monitoring self-repairing system and method for a fiber grating sensor network, belonging to the field of engineering structure health monitoring technology. Aiming at the reliability of an intelligent health monitoring system of a fiber grating sensor in a large-scale engineering structure, the functions of information acquisition, extraction, analysis, evaluation and the like of a conventional distributed fiber grating intelligent health monitoring system are transformed into intelligent agents that can sense the own bodies and the environments and can communicate and mutually cooperate with other agents by adopting multi-agent cooperation and decision-making techniques, failure sensors are subjected to functional compensation based on the fiber grating sensor which is survived near a damaged area through the mutual cooperation among the agents, and thus the whole intelligent health monitoring system can be restored to normal work without changing the fiber grating sensor network in a monitored object, the functional compensation for local failure of the fiber grating sensor network can be achieved, and finally, the intelligent evaluation of the health state of the monitored object can be achieved with higher accuracy and reliability.

Disclosed are a rotation missing plot tracking system and method for a double-reflection-surface satellite antenna, which are used for solving the deficiency of an existing satellite antenna automatic tracking system, characterized by comprising a main reflection surface, a secondary reflection surface and a feed source, wherein the main reflection surface is provided with a servo tracking unit and a main control unit; the main reflection surface, the secondary reflection surface and the feed source are coaxially arranged; one of the main reflection surface and the secondary reflection surface can rotate around an axial centre and is provided with a rotation mechanism; and the rotating main reflection surface or secondary reflection surface is eccentrically provided with a signal local-failure zone. Compared with stepped tracking, the present invention has a high precision and is quick in response; compared with conical scanning tracking, a main reflection surface and a secondary reflection surface are coaxially arranged, thereby decreasing a side lobe, reducing the interference of an adjacent satellite and improving the applicability; and compared with single-pulse tracking, by using a rotating and eccentrical signal local-failure zone, a quasi-sinusoidal signal of a model intensity period change can be acquired, which has a simple device and a low cost.

A method of operating a root node in a multipoint-connection with a plurality of leaf nodes, the method including transmitting / receiving traffic with the plurality of leaf nodes via a working path, receiving, from a leaf node, a message indicating an occurrence of a failure on a path of the leaf node from among the plurality of leaf nodes, recognizing an occurrence of a local failure on the path connected to the leaf node, and transmitting information about the failure to the leaf node.

The invention relates to auxiliary equipment for concrete detection, in particular to an ultrasonic detection aid for a concrete pier. The aid comprises a bushing with a bolt which is closely attached to a pier; 90 DEG bending pipes which are sleeved at both ends of the bushing with the bolt, as well as lining airbags and acoustic pipes which are arranged at vertical sections of the 90 DEG bending pipes and closely attached to the pier, wherein the 90 DEG bending pipe and the bushing with the bolt are in telescopic connection; the lining airbags are connected with airbag gas inflation pipes for inflating; and the acoustic pipes are suspended in semi-circle pipes of the lining airbags through key slot suspension riveting heads of horizontal sections of the 90 DEG bending pipes. The aid can gradually upward detect along with construction progress, can also be applied according to the comprehensive evaluation of detected data of the top part and two end parts or the combination with the prior method after the completion, has the advantages of convenient application, low detection cost and random sampling of the selection of detection surfaces, cannot cause local failure to concrete, and truly realize non-constructive detection.

The invention relates to an automatic hydraulic deviation correction device for coal seam hydraulic drilling, belonging to the technical field of drilling devices. The device of the present invention first fixes the drill pipe in the positioning sleeve through the drill pipe buckle, then turns on the power, opens the console, starts the motor to transmit power to the drill pipe joint to drive the drill pipe, and calculates the offset situation through the information transmitted by the pressure sensor , and control the air pressure in the air cushion to adjust the direction of the drill pipe, and at the same time control the hydraulic machine to make the water flow in the water storage tank inject the jet port from the jet channel, and form a high-speed jet flow in the opposite direction of the drill bit deflection, and perform directional and local damage to the rock, so that the The rock becomes relatively "softer", and the borehole will be drilled in this direction, that is, drilled in the opposite direction of the borehole's deviation, correcting the direction of deviation.

The invention discloses a strength evaluation method for a tangential inclined connecting pipe under a pipeline load effect, and belongs to the technical field of pipeline load strength evaluation methods. The method comprises the steps: establishing a three-dimensional solid model of a tangential oblique connection pipe structure in a DM module of the ANSYS Workbench simulation platform; selecting a Solid186 secondary unit in the Meshing module to divide grids; adopting an ideal elastic-plastic material constitutive relation, a small-deformation theory and equal-proportion loading in a Stretch module to carry out limit load analysis on the tangential oblique connecting pipe structure under the design condition; carrying out the elastic stress analysis under the design condition on the tangential oblique connecting pipe structure in the Stretch module by adopting a linear elastic material constitutive relation and a small deformation theory, and carrying out the evaluation for preventing local failure on a key part on the basis of the sum of three-way principal stress of a thin film and bending; in the Stretch module, adopting a linear elastic material constitutive relation and a small deformation theory to carry out elastic stress analysis on a tangential oblique connecting pipe structure under an operation condition, and extracting primary and secondary stress of a stress classification line from a key part to evaluate ratchet wheel failure prevention.