75results about How to "Improve fault tolerance" patented technology

The invention discloses a computer system based on multi-module redundancy embedded software, which is composed of three redundancy modules: a system management module used for initializing system start; a data IO module used for receiving the data of the external redundant input; a voting module used to realize the synchronization and data exchange of the three redundancy modules and voting output, fault detection and system reconfiguration; a flight control module used for command processing and control rule solving; a recorder used to recording and storing data, and performing data exchangewith the host computer. The invention also discloses a design method thereof, comprising the following steps: S1, the redundancy modules are deployed; S2, reading the input data by the data IO moduleafter synchronization; S3, three redundancy modules interact with one other to input data; S4: the voting module performs input data voting and output right voting. The whole software system adopts athree-module redundancy architecture, and the FPGA also adopts the three-module redundancy architecture, which can realize the high reliability of the system in case of failure.

The invention provides a dual-redundant CAN bus communication system. The dual-redundant CAN bus communication system comprises two CAN buses and a plurality of redundant nodes, wherein the plurality of redundant nodes are simultaneously connected to the two CAN buses; a main-spare type hardware architecture is adopted in each redundant node, wherein each redundant node comprises a redundancy functional module; the redundancy functional module executes: node IDs of all the redundant nodes are sorted according to the size, such that a token ring is established; each redundant node sends an online monitoring message; according to the size sorting of the node IDs, except the node having the maximum node ID, each node sends the online state monitoring message to the node, the node ID value of which is greater than that of the self and the difference value of which is minimum; the node having the maximum node ID in a network sends the online state monitoring message to the node having the minimum node ID; each redundant node judges the state of any channel among the self and other redundant nodes on the CAN bus through the received online monitoring message; once the fact that a default channel of a certain node cannot be used for communicating is found, the default channel is instantly switched to a spare channel to perform bus communication; and thus, normal transmission of network data is ensured.

A combined navigation method based on an INS (inertial navigation system)/GPS (global position system)/SAR (synthetic aperture radar) comprises steps as follows: an INS receiver, a GPS receiver and an SAR sensor are mounted in appropriate positions of an unmanned aerial vehicle in parallel; image matching is performed, and position navigation deviation of the INS is obtained and taken as an observed quantity to be input into a filter, and the observed quantity and other observed quantities are jointly filtered; GPS measuring deviation is obtained and taken as an observed quantity to be input into the filter, and the observed quantity and other observed quantities are jointly filtered; the filter integrates the measuring deviation from the GPS and the position navigation deviation, obtained through image matching, from the INS, and a navigation error estimated value is calculated. Topographic features are automatically and reliably extracted from an SAR image, a map image is formed in a digital map, and the SAR topographic features are automatically predicted; topographic deviation is accurately estimated and integrated; capture and matching are automatically initialized; the fault tolerance capability, the autonomy and the reliability of navigation are high.

The invention discloses an augmented reality three-dimensional plotting system and method based on gesture recognition. According to the method, an effect of fusing virtual three-dimensional plottingand a real scenario is achieved on a concept of augmented reality, so that real-time interaction can be performed on a computer and a user. By virtue of real-time gesture recognition and hand motion track recognition, according to the system and method disclosed by the invention, the user is allowed to perform translation, three-dimensional rotation and far and near stretching operations on a two-dimensional plotting plane, and the virtual three-dimensional space is fused with an actual three-dimensional space, so that the effect of plotting in the real three-dimensional space is achieved. Thesystem and method disclosed by the invention can be applied to artistic creation, children education and work demonstration.

A method for improving a large-size peer-to-peer network streaming-media system provides a solving proposal of the transmission problem of large and medium-size P2P (peer-to-peer network) streaming media by using an improved Chord (with chord ring topology) structure model and solves the problem of streaming-media service in the large-size network environment by making use of the P2P network technology and the streaming-media dispatching technology. The method constructs a streaming-media system firstly according to the system construction method in a node and resource organization and management method; user nodes join or depart from the streaming-media system according to a node joining or departing strategy. After running for a period of time, the system appears hotspot resources centralized by user requirements; the system processes the hotspot resources with a hotspot resource processing method to keep a balance of load of the system. Once a user node sends requirements for file resources, the streaming-media system executes location search according to the node resource requirements and location requirement strategy, gives search results back to users and saves the search results on the return path simultaneously.

The invention provides a high speed communication architecture and method based on trunking. The high speed communication architecture comprises a plurality of trunking communication nodes and a shared storage system. The multiple trunking communication nodes are mutually connected to form an annular trunking communication node communication structure; the multiple trunking communication nodes are each connected with the shared storage system. Compared with the prior art, the high speed communication architecture and method based on the trunking have the advantages that trunking communication is expanded to the multiple trunking communication nodes, calculation devices among the trunking communication nodes of a trunking communication system and calculation devices within the trunking communication nodes achieve calculation load balance, high fault tolerance of the trunking communication system is guaranteed, and therefore the overall operating efficiency of the trunking communication system is improved and task processing time is largely shortened.

The invention discloses a disc type double-stator hybrid excitation motor. According to the hybrid excitation motor designed in the invention, based on the principle of magnetic field modulation, the combination of a disc type permanent magnet motor and an electric excitation system is realized. The hybrid excitation motor has the characteristics of high power density, high moment density, a short axial size and a compact structure and also has the advantages of flexible adjustment of an excitation magnetic field and a wide speed regulation range, and thus the hybrid excitation motor can be applied to the field of electric vehicle hubs. The motor comprises two stators and one disc type rotor. An excitation winding and an armature winding are respectively arranged at the stators at two sides, and a permanent magnet pole and a core pole are distributed on the rotor. By using the magnetic field modulation technology, the permanent magnet on the rotor and the excitation winding on an inner stator generate a magnetic field same with an armature winding pole pair number at an external air gap, and a permanent magnet pole and an iron pole are uniformly distributed on the rotor. By using the magnetic field modulation technology, the permanent magnet on the rotor and the excitation winding on the inner stator generates a magnetic field same with the armature winding pole pair number at the external air gap, and thus the electromechanical energy conversion is realized. The back EMF waveform is improved through the design of a multi-phase structure and a three-layer fractional-slot integrated winding, and the reliability and fault tolerance of the motor are improved at the same time.

The invention relates to a DSL bond method of multi users, wherein the twisted-pair line of nearby users is bonded into one multi-input multi-output (MIMO) logic channel; the digit user line bonded at the client terminal device (GPE) and the local terminal is accessed into the physical layer and data chain layer of multiplex device (DSLAM); the invention uses one spatial code method to integrate multi user data flows into one code bit flow to be distributed into several independent physical channels to be sent; at the same time, for reducing the interference on the same-cable line, based on multi-channel test and the estimate result of sending data flow, processing the data flow smooth access with dynamic sub carrier wave restrain, bit load adjustment and code increment control.

The present invention provides an automatic charging equipment used for a mobile robot and a using method thereof. The equipment comprises the mobile robot, an electric conduction head, a flexible adaptation mechanism, a protruding mechanism, a power conversion module, a controller, a control device and a robot detection device. A charging part of the mobile robot is contacted with the electric conduction head, the electric conduction head is located on the flexible adaptation mechanism, and the flexible adaptation mechanism is located on the protruding mechanism, the controller is located onthe side of the protruding mechanism, and the power conversion module, the robot detection device and the control device are all connected with the controller via cables. The equipment can be used forrobot automatic charging, and the equipment has the advantages of high success rate of charging, high adaptability and effective reduction of labor cost.

The invention discloses a wireless sensor network isomerism information fusion decision-making system which is divided into a physical layer, an interface layer, a service layer and an application layer. A sensor data dictionary is built through a data package structure and a data pattern of the sensor, the sensor data package is analyzed, and a decision-making level data fusion mode is adopted to be used as the data fusion mechanism of the system to achieve the information fusion decision of the sensor network. The wireless sensor network isomerism information fusion decision-making system adopts laminated design, not only shields isomerism of the physical equipment at the bottom layer and data, but also greatly increases expansibility and flexibility of the system, in addition, the adoption of decision level fusion improves fault tolerance of the system.

Certain aspects of a method and system for improved fault tolerance in distributed customization controls using non-volatile memory are disclosed. Aspects of one method may include mapping an input control signal to a plurality of input logic circuits within a security processor. A plurality of independent processing paths may be defined between each of the plurality of input logic circuits and an output logic circuit. Each of the plurality of independent processing paths may comprise one or more logic circuits. The input control signal may be routed via at least a portion of the plurality of independent processing paths. The portion of the plurality of independent processing paths may be combined in the output logic circuit to generate the input control signal.

The invention relates to a blockchain technology, and discloses a server, a blockchain-based defrauding client information sharing method and a storage medium. The method comprises the following steps: after an application for uploading defrauding client information is received, calling a data verification intelligent contract initiating transaction, and verifying the defrauding client information; after the defrauding client information passes through the verification, signing an owner identifier of an uploader by using a digital certificate, and encrypting the defrauding client information;after an application of checking the defrauding client information is received, calling a data inquiry intelligent contract initiating transaction, extracting signature information corresponding to arequester in the transaction, acquiring authorization information, and verifying whether the requester is authorized to check the corresponding defrauding client information or not; and if YES, acquiring the corresponding encrypted defrauding client information, and decrypting the defrauding client information to acquire the defrauding client information. The blockchain-based defrauding client information sharing method realizes secure and controlled sharing of insurance defrauding data and can be comprehensively and effectively applied to anti-fraud identification.

A communication apparatus of the embodiment is provided with a first IF card that performs a relay process of a data frame in a first direction of a ring network, a second IF card that performs a relay process of a data frame in a second direction of the ring network, a communication-status determination unit that monitors the communication status from the first IF card to the second IF card, a block control unit that sets a new block point to either the first IF card or the second IF card when the communication status is abnormal, and a ring protocol processor that notifies other communication apparatuses that constitute the ring network of information for notifying the switching of a block point in the ring network, which indicates that the new block point has been set.

The invention provides a voltage dip data analysis method based on a cloud computing technology and belongs to the technical field of electric energy quality analysis. The voltage dip data analysis method comprises the steps of adopting a cloud computing platform based on hadoop1.1.2 to transfer waveform data in a relationship-based data base to a KV data base through a MapReduce programming mechanism and a transferring tool Sqoop and memorizing data with specific cyclic waves in a key value mode; reading one key value pair (key, value) serving as an input from the KV data base through each Mapper (mapping class); traversing one cyclic wave data and calculating an RMS (root-mean-square) value; sorting output results of all of Mapper (mapping class); combining RMS data curves of the same phase of the same event through a Reducer and traversing the curves to calculate dip characteristic values. The voltage dip data analysis method enables relevant data of voltage dip to be directly and parallelly calculated in multiple computers through the Hadoop cloud computing platform, really achieves superposition of computing capacity of multiple physical computers, accordingly improves the computing efficiency greatly and fault tolerance of the cloud computing platform and also improves the reliability of dip calculation results.

The method includes following steps: multi units are set in the communication system above, which are divided into N main data units and M standby data units. Multi data regions are set in each unit. The data region in main units is used as main data region, and the data region in standby data unit is used as standby data region. A main control unit Z is set to control all data regions; when system has failure, the main control unit Z starts standby data region in standby unit to replace main data region and to be as main data region

The invention discloses a multi-sensor-based trackless omnidirectional mobile robot system and a control method thereof. The system comprises a control panel, a PC (personal computer), an inertial navigation sensor, a two-dimensional code recognizer, a laser sensor, an odometer, a motor driver and an omnidirectional moving chassis connected with the motor driver, wherein the PC is used for transmitting control signals to the control panel, and the inertial navigation sensor, the two-dimensional code recognizer, the laser sensor, the odometer and the motor driver are connected to the control panel separately. The control board reads the data information of the inertial navigation sensor, two-dimensional code recognizer, laser sensor and odometer and obtains a corresponding control signal after control calculation and processing in order to control a motor to drive a mobile robot to run along a designated path. The control method achieves accurate locating by combining the odometer witha two-dimensional code on the basis of an inertial navigation algorithm. The method achieves position state correction and accurate locating of the trackless omnidirectional mobile robot and improvesthe adaptability and stability of the trackless omnidirectional mobile robot in a man-machine hybrid environment.

The invention relates to an active power distribution network fault positioning method based on an improved artificial fish swarm algorithm. The method comprises the steps of 1) making a power distribution network be equivalent to a fault vector formed by three integers according to an improved integer programming model of the power distribution network after a fault; 2) based on the improved artificial fish swarm algorithm, generating an initial fish swarm by using the fault vector obtained in the step 1), wherein each fish represents an expected state of each section of the power distribution network, and iterative optimization is started; and 3) evaluating advantages and disadvantages of an artificial fish position through a food concentration, updating iteration till that an end condition is satisfied, and obtaining a positioned fault position. Compared with the prior art, the method of the invention is suitable for fault positioning of active power distribution networks of different scales, and has a higher fault tolerance capability for distortion information and the other advantages.

The invention provides a novel two-section type seven-phase permanent magnet fault-tolerant motor and belongs to the technical field of permanent-magnet synchronous motors. The motor comprises a motor shell, two rotor assemblies, two stator assemblies, a rotary shaft, a bearing, a bush, an insulating sleeve, a magnet isolating board and an end cover. The two stator assemblies and the two rotor assemblies are coaxially installed on the same shell. The two stator assemblies are a three-phase winding and a four-phase winding respectively and connected with the rotary shaft through the rotor assemblies respectively, so that a three-phase permanent magnet fault-tolerant motor section and a four-phase permanent magnet fault-tolerant motor section are formed. The magnet isolating board is installed between the two motor sections. Phase windings of the stator assemblies are in a concentrated single-layer winding mode and are embedded separately through teeth. Power is supplied to each phase winding through an independent H-bridge driving mode. The novel two-section type seven-phase permanent magnet fault-tolerant motor is good in physical isolation capacity, magnetic field isolation capacity, thermal field isolation capacity and electric isolation capacity and can effectively restrain short circuit currents of the permanent magnet motor, greatly improve the reliability of the permanent magnet motor and satisfy the requirements for primary fault work, secondary fault work and third fault safety.

The invention discloses a device for cleaning the inner wall of a sewage drainage pipe. The device for cleaning the inner wall of the sewage drainage pipe comprises a machine shell, a water tank wallis arranged in the machine shell, a sliding space is arranged in the water tank wall, and a water storage tank is slidably connected into the sliding space. A water storage top pressure spring is connected between the lower side of the water storage tank and the bottom wall of the sliding space. Compared with a traditional sewage drainage pipe, the sewage drainage pipe is cleaned through the gap between the sewage storage and sewage drainage, and in order to completely clean the inner wall of the drainage pipe once in the gap, the weight of the sewage storage tank is used for controlling the discharge and storage of sewage. The fault tolerance rate is improved by a water flow speed limiter, the cleaning effect is improved through multidirectional cleaning of the inner wall of the sewage drainage pipe and help of a detergent, and the life of the sewage drainage pipe is prolonged.

The invention discloses a construction method of a heterogeneous network system based on a converged communication system, and the heterogeneous network system is constructed by taking a broadband carrier protocol stack as a main part and a micro-power wireless protocol stack as an auxiliary part, and adding a mixed Mesh routing protocol. According to the heterogeneous network system, communication is carried out through a mixed topology path formed by broadband carrier waves and wireless when network access fails in a broadband carrier wave mode or agency change is not completed, and communication is carried out by continuously using a broadband carrier wave path after network access of nodes is carried out again in a carrier wave mode or agency change is completed. According to the method, a broadband carrier protocol stack is used as a main part, a low-speed micro-power wireless protocol stack is fused as an auxiliary part, physical layers in a broadband carrier communication scheme and a low-speed micro-power wireless communication scheme are subjected to superior and disadvantage complementation, and a mixed Mesh routing protocol is combined, so that the fault tolerance of the network is improved, the network congestion is reduced, and finally a stable communication link is formed; and any node can normally communicate at any moment.

The invention discloses a reinforcement method for a key driving program of an Android operating system. The reinforcement method includes registering a safety module to an LSM (Linux security module) frame to achieve an LSM frame interface serving as an isolating layer; filtering driving parameters and checking parameter types through the LSM interface to ensure that a user process shall be subjected to LSM interface detection when calling the key driving program; tracking and recording kernel resources utilized by the key driving program in codes of the LSM interface; when some system resource occupied by the key driving program of the Android operating system exceeds a preset corresponding threshold value, rejecting calling of the user process to the key driving program of the Android operating system to complete reinforcement of the specific driving program. By the reinforcement method, the fault-tolerant capability of the driving program in the Android operating system can be improved, illegal driving program calling can be prevented, and viciously-called user processes can be detected.

Embodiments of the invention disclose a device arbitration method and device. The method comprises: a first storage device sends an arbitration request message to an arbitration server; according to the arbitration request message, registration information of the first storage device and the situation that a second storage device does not take over host services, the arbitration server sends an instruction message to the first storage device to instruct the first storage device to take over the host services and deletes the registration information of the second storage device. The first storage device sends a reservation request message to the arbitration server and instructs the arbitration server to prohibit the second storage device from registering. The method and the device can avoid the possible situation that data is out of sync because a plurality of devices take over the host services at the same time, and improve the fault tolerance, reliability and security of a dual active arbitration system.

The invention discloses a modularized switch flux disc motor and a system. The modularized switch flux disc motor comprises a stator, a rotor and two sets of windings, wherein the stator comprises two stator disks; each stator disk comprises k stator modules; each stator module comprises m stator units and m connection blocks; the connection blocks are arranged between any two stator units; the stator units and the connection blocks are arranged along the circumferential directions of the disks; and each stator unit comprises two first laminated segments, a second laminated segment and two permanent magnets, the second laminated segment is arranged between two first laminated segments and the permanent magnets are arranged between the first laminated segments and the second laminated segment. According to the modularized switch flux disc motor, each stator disk is divided into k stator modules, each stator module comprises m stator units and each stator unit comprises two first laminated segments and one second laminated segment, so that magnetic circuit coupling of each phase of winding is reduced and the fault-tolerant ability and the utilization efficiency of the permanent magnets are improved.

The invention discloses an ETC and MTC hybrid lane system and a control method. The system comprises a hybrid lane controller, a front-end toll display, a back-end toll display, a front-end lane antenna, a back-end lane antenna, a card reader, and a vehicle detector. The vehicle detector, the front-end toll display, the back-end toll display, the front-end lane antenna, the back-end lane antenna and the card reader are connected with the hybrid lane controller. The front-end toll display is disposed at the back end of the front-end lane antenna. The back-end toll display is disposed at the back end of the front-end toll display. The card reader is disposed between the front-end toll display and the back-end toll display. The back-end lane antenna is disposed at the back end of the back-end toll display. ETC transaction and MTC transaction can be realized using one hybrid lane controller. ETC is carried out twice, and ETC transaction is carried out again if ETC transaction does not succeed at the first attempt. The efficiency of toll collection is improved.

The invention provides an oblique insertion protection system of a display driving circuit and an oblique insertion protection method. The system comprises a first circuit board and a second circuit board. The first circuit board is provided with a detection control module, an output module electrically connected to the detection control module, and a first connection module electrically connectedto the detection control module. The second circuit board is provided with a second connection module which forms pairing connection with the first connection module. When the first connection moduleand the second connection module form pairing connection, the detection control module emits a detection signal to the first connection module, and whether the first connection module and the secondconnection module are obliquely inserted is determined according to whether the detection signal can be transmitted back to the detection control module. When oblique insertion is achieved, the detection control module sends a protection signal to the output module so as to make the output module stop working so that a condition that the display driving circuit is burnt due to the oblique insertion is avoided.

The invention belongs to the technical field of solar cells, and particularly relates to a wide preparation window and a preparation method of a spontaneous textured perovskite solar cell. Firstly, anelectron transport layer is prepared, and then a perovskite layer, a hole transport layer and an electrode are prepared. The perovskite layer is obtained through the steps of perovskite solution coating, wet film reduced pressure distillation, annealing and the like. The perovskite solution is obtained by dissolving perovskite precursors (cesium iodide, lead iodide, lead bromide, formamidine iodide and methylamine bromide) into a mixed solvent composed of a high-volatility solvent and a low-volatility solvent. In the reduced pressure distillation process, the high volatile solvent is removed,the remaining low-volatility solvent and the perovskite precursors form a complex, so that the stability of an intermediate-state thin film is improved, an annealing window can be greatly prolonged,a suede can be spontaneously formed on the surface of perovskite in the annealing process, the perovskite thin film with the suede can provide a light trapping effect, and the long-wave response of the cell is improved.

The invention discloses a static commodity statistics method, which comprises the following steps of: performing target detection and feature extraction on video data according to a target detector toobtain a detection target list and a tracking target list, and calculating a speculative position of a tracking target according to the tracking target list; performing optimal weight matching according to the detection target list and the tracking target list; if the detection target is matched with the tracking target, updating the tracking target list, and if the detection target is not matched with the tracking target, establishing new tracking information for the detection target, adding the new tracking information to the tracking target list, and updating the current position of the tracking target; and deleting the tracking targets which are matched and identified for multiple times in the tracking list, and after the video data processing is completed, counting the types and thenumber of the tracking targets appearing in the tracking process. Thus, through video dynamic tracking identification, the types and the number of the commodities are accurately counted in real time,and the positions of the commodities are confirmed.

The invention discloses a hardness measuring device for automobile part production based on a Rockwell hardness tester, and relates to the technical field of automobile part production. The hardness measuring device for automobile part production based on the Rockwell hardness tester comprises a mounting box, wherein a mounting box is welded and mounted at the bottom of the inner side of the mounting box; and a mounting block is welded and mounted at the bottom of the inner side of the mounting box. Through cooperative use of a fixing plate, a second sliding block, a hydraulic rod, a crossingblock, a hinge rod, a first clamping block, a second clamping block, a first vertical block, a second vertical block, a clamping block, an inserting block and an inserting rod, two groups of automobile parts can be clamped and fixed at the same time; on one hand, a worker does not need to hold the automobile parts by hands for hardness measurement; on the other hand, two groups of measurement values can be obtained through the arrangement of the two groups of automobile parts for comparison, so that the possibility of measurement errors is reduced; and the automobile parts with different sizesand different shapes can be fixed, so that the error-tolerant rate of the device is further enhanced.

The invention discloses a method and system for remotely controlling a terminal and the controlled terminal. In the method, an Android system and the same application software are installed on a control terminal and a controlled terminal. The method comprises the following steps that a controlled terminal obtains a screen capture picture of a current software interface of application software on the controlled terminal in real time, packages the screen capture picture into a data packet and forwards the data packet to the control terminal through a cloud server. And the application software ofthe controlled terminal receives the data packet forwarded by the cloud server, and obtains the control instruction from the data packet. Wherein the control instruction is generated based on the operation of a user on the screen capture picture displayed on the control terminal after the control terminal obtains the screen capture picture from the data packet and comprises an operation action and an operation parameter, and the operation action and the operation parameter are sent to the cloud server by application software on the control terminal. And the application software on the controlled terminal obtains the operation action and the operation parameter from the control instruction and executes the operation action and the operation parameter. The method can conveniently realize remote control under the condition that the method is not limited by the authority of the Android system.

The invention belongs to the technical field of expert systems and discloses an intelligent lawyer expert response method. The method comprises the steps of obtaining input case information; performing word segmentation on the case information; extracting a keyword by adopting a TFIDF method; by adopting a cosine similarity matching method, based on the keyword, matching case questions with casesin a corpus library; and outputting answers of 3 questions with relatively high cosine similarity, wherein the corpus library is established based on historical case processing information of lawyers.The invention provides an efficient lawyer expert system response method.