81 results about "Link protection" patented technology

The invention relates to a self-adaptive multi-mode switching communication method and device, and the method comprises the steps: obtaining the state information of a communication network, and judging whether the communication network meets an anomaly detection condition or not based on the state information; under the condition that the communication network meets the abnormal detection condition, calculating a switching score of the communication network, and judging whether the communication network executes network switching or not based on the switching score; under the condition that the communication network meets the network switching condition, executing a broken link protection operation, and adjusting a transmission path of a corresponding data stream; and adjusting the switched data stream through a transmission optimization mechanism to maintain the continuity of the communication session. The application has the effect of improving the communication quality.

The invention discloses a ring network link switching method and device, computer equipment and a storage medium, and belongs to the technical field of communication. The method is applied to a monitoring device, the monitoring device is provided with a main link and a standby link between the monitoring device and a detection device in a ring network, and the method comprises the following steps: under the condition that the main link is monitored to be invalid, sending a table cleaning message to a maintenance domain where the main link is located so as to indicate devices in the maintenance domain to clear configuration information of the main link; and sending a request message to the maintenance domain to indicate the equipment in the maintenance domain to learn the configuration information of the standby link, so that the communication connection between the equipment and the detection equipment is switched from the main link to the standby link. According to the method and the device, rapid switching from the main link to the standby link can be realized, high availability, stability and reliability of the network are ensured, and the method and the device are suitable for link protection and fault recovery scenes under various ring network topology structures.

The invention discloses an apartment lease management system and method, and relates to the technical field of block chains, and the method comprises the steps: generating a facial feature vector through a ResNet-50 model, encrypting identity information and the facial feature vector through a ChaCha20-Poly1305 algorithm to generate encrypted identity data, and generating a credit point identifier and an initial credit point through an SHA-256 algorithm; processing the credit point identifier based on a joint learning framework to generate an anonymous credit query token, and protecting historical lease behavior data by using a differential privacy method; comparing the facial feature vector with the real-time facial feature vector through cosine similarity, and executing identity confirmation; and generating an electronic contract draft by using a Hyperledger Fabric network and a chain code. According to the method, a biological characteristic full-link protection system is constructed by fusing a ResNet-50 model and a ChaCha20-Poly1305 dynamic encryption mechanism.

This application provides a quantum-secure quantum key management and distribution method with end-to-end quantum security. The method includes: a first proxy platform sending a first key request to a control platform and receiving a target quantum key and a unique identifier; the first proxy platform sending the unique identifier to a second proxy platform, enabling the second proxy platform to obtain the target quantum key from the control platform; the first proxy platform receiving a second key request from a first device and sending the target quantum key and the unique identifier to the first device, enabling the first device to send the unique identifier to the second device; and the second device sending a request including the unique identifier to the second proxy platform to obtain the target quantum key. This allows the first and second devices to communicate using the target quantum key; the transmission channel for the unique identifier and each key request is a quantum-secure virtual private network tunnel. Therefore, end-to-end protection of the quantum key management and distribution process can be achieved, improving the system's quantum security capabilities.

Various aspects of this disclosure relate to: receiving (1502) a configuration message for subband time-frequency configuration, wherein the configuration message indicates frequency domain resources and time domain resources of at least one subband; and determining (1504) the transmission direction of the at least one subband, wherein the transmission direction includes a downlink, an uplink, a guard band, or a combination thereof.

Various aspects of the present disclosure relate to: receiving (1502) a configuration message for a subband time-frequency configuration, wherein the configuration message indicates frequency domain resources and time domain resources of at least one subband; and determining (1504) a transmission direction of the at least one subband, wherein the transmission direction comprises downlink, uplink, guard-band, or a combination thereof.

The application relates to the technical field of data processing, and provides an API-level data flow transfer full-link protection method and device, equipment and a medium, which can collect application layer business log data and kernel state network flow data as to-be-processed data in real time by adopting a non-buried point mechanism, realizes non-intrusive full-amount data collection, identifies to-be-protected data by adopting a non-feature data supplement identification mechanism, improves the accuracy and generalization ability of data identification, solves the problem that non-feature data cannot be controlled, constructs an API-level full-link data flow transfer map according to the to-be-protected data and the to-be-processed data, provides a complete topology basis for subsequent risk detection and tracing, performs risk detection according to the API-level full-link data flow transfer map, improves the effectiveness of risk detection, performs bidirectional tracing according to the detection result and the API-level full-link data flow transfer map, obtains a tracing report, can quickly locate a data anomaly source and an influence range, and provides a complete evidence chain.

Embodiments of the present disclosure provide a dynamic link protection method and apparatus, a storage medium, and an electronic apparatus. The method comprises: when a first network device is attacked by a first packet, the first network device performing session information matching on a received second packet on the basis of a protection list, wherein session information of an established dynamic link is recorded in the protection list; and when session information matching the second packet is present in the protection list, processing the second packet on the basis of a set bandwidth and a set priority so as to protect a first dynamic link corresponding to the second packet from being influenced by the attack of the first packet.

The invention belongs to the technical field of data security, and particularly relates to an Internet of Things data information secure transmission method. In order to solve the problems of limited resources and many transmission potential safety hazards of Internet of Things equipment, the method constructs full-link protection: generating a dynamic equipment fingerprint based on a physical unclonable function and behavior characteristics, and ensuring identity credibility; an improved elliptic curve Diffie-Hellman algorithm is adopted to generate a shared key, and the shared key is adaptive to lightweight equipment and is resistant to attacks; based on information entropy dynamic fragmentation, encrypting and embedding redundant data according to sensitivity differentiation; data fragmentation is transmitted through multiple paths; and carrying out fragmentation-level verification and accurate retransmission, and carrying out alarm isolation if the verification fails for more than three times. The method gives consideration to safety and high efficiency, comprehensively resists the threats such as counterfeiting, eavesdropping and cracking, guarantees the integrity and reliability of data transmission, and is adaptive to the complex application scene of the Internet of Things.

The present application relates to the technical field of subway, and discloses an intelligent guiding robot for coping with large passenger flow of subway, which comprises a subway platform, a main control cabinet, a monitoring camera, a charging cabin, a guiding mechanism and a blocking mechanism; the monitoring camera is installed at the top of the main control cabinet; a plurality of charging cabins are arranged at intervals in the outer area of the subway platform; the guiding mechanism is arranged in the interior of one of the charging cabins; and a plurality of blocking mechanisms are arranged in the interiors of the remaining charging cabins. The intelligent guiding robot for coping with large passenger flow of subway is characterized by intelligent cooperation, dynamic adaptation and full-scene protection, can flexibly adjust the number of channels according to passenger flow and platform layout, realizes the change from original single guiding to full-link protection, combines physical isolation and sound-light reminding, provides a feasible technical scheme for efficient and safe operation of the subway transportation hub, and is suitable for the large passenger flow dredging requirement of the subway peak period of a super large city, and has wide popularization value.

The utility model discloses a radio frequency protection device, a radio frequency protection system and radio frequency protection equipment. The radio frequency protection device comprises a first filtering module and a second filtering module, the first filtering module is respectively connected with the radio frequency link and the second filtering module, and the second filtering module is connected with the signal ground; the first filtering module is used for transmitting a first radio frequency signal of which the frequency is not in a first frequency band in an input signal to the second filtering module when the input signal is received, the input signal is input into a radio frequency link through the antenna interface, and the first filtering module is coupled with the radio frequency link; and the second filtering module is used for transmitting a second radio frequency signal of which the frequency is not in the second frequency band in the first radio frequency signal to the signal ground. According to the utility model, dual-band equivalent open circuit can be realized through the first filtering module and the second filtering module, and the grounding loop formed by the first filtering module and the second filtering module releases the signals except the first band and the second band in the input signals through the signal ground, thereby realizing dual-band radio frequency link protection.

The present application provides a link protection switching implementation method and system. In a ring network composed of multiple stacking systems, the connection links between the multiple stacking systems include RPL links and ordinary links. The default state of the RPL link is a blocking state. Each stacking system includes a connected main board and a backup board. When the main board in the stacking system of the ordinary link senses that the ordinary link has failed, it will back up the processing results of the G8032 signal and protocol message to the backup board of the same stacking system. In addition, the main board will notify the stacking system of the RPL link to enable the stacking system of the RPL link to switch the RPL link to the on state, thereby realizing link protection switching. This solution can suppress loops through the RPL link on the one hand to ensure the normal network environment. On the other hand, it can quickly perform protection switching when an abnormality occurs in the link to ensure the reliability of the network.

The invention discloses a link protection switching method, electronic equipment, a readable storage medium and a computer program product, and belongs to the technical field of communication. The method comprises the following steps: acquiring a first link quality parameter of a target link; determining a first health degree score of the target link according to the first link quality parameter, the first health degree score being used for indicating a current link stability state of the target link; according to the first link quality parameter and the first health degree score, obtaining a dynamic switching threshold parameter according to a preset switching threshold obtaining strategy; and performing a link switching decision on the target link according to the dynamic switching threshold parameter.

A VDCOL and current-limiting protection coordination-based power grid cascading failure blocking method comprises the steps of S1, constructing an improved CSEE-FS simulation model containing multi-loop direct current and new energy in MATLAB / SIMULINK, adopting a double-fed fan wind power plant as the model, accessing current-limiting protection to the wind power plant at a grid-connected point, adopting a conventional high-voltage direct-current power transmission system as a model direct-current module, and adopting a traditional VDCOL control strategy; s2, based on the improved CSEE-FS simulation model containing multi-loop direct current and new energy, a multi-inflection-point scheme is adopted, a traditional VDCOL control strategy is subjected to multi-section processing, and the parameter limitation range of the improved VDCOL is analyzed and set by considering the wind power plant low-voltage off-network protection limitation, whether current limiter protection is input or not and the wind power plant low-voltage ride-through limitation; and S3, based on the power grid cascading failure simulation data and the parameter limitation range of the improved VDCOL, solving through a DCS algorithm to obtain an improved VDCOL parameter. According to the design, the cascading failure of the alternating-current and direct-current hybrid power grid containing new energy can be effectively evaluated and blocked.

The invention discloses distribution network automation optical switch type optical fiber bypass equipment, which relates to the technical field of optical fiber link protection, and comprises an optical fiber bypass switch main body, and the signal output end of the optical fiber bypass switch main body is connected with a signal transceiving assembly and a self-control alarm assembly. The signal transceiving assembly comprises a photoelectric signal converter, a signal amplifier, a signal processing controller and a signal antenna. According to the optical fiber bypass switch, the optical fiber bypass switch body serves as a core, the signal output end of the optical fiber bypass switch body is connected with the signal receiving and transmitting assembly and the self-control alarm assembly, a complete system integrating signal transmission, fault monitoring and alarm is formed, and fault signals are rapidly sent to a control center; and meanwhile, the multi-information channel alarm assembly is controlled to send out alarm signals in multiple modes, so that a maintainer can quickly determine the position of a damaged node, and the time required for maintenance is shortened.

A Multi-Link Device, MLD, (110; 120) with a plurality of affiliated access points, APs, (113a, b) or non-AP stations (123a, b) is disclosed for communication via a plurality of links (115a, b) with a further MLD (120; 110) with a plurality of affiliated non-AP stations (123a, b) or APs (113a, b). The MLD (110; 120) is configured to generate a link protection key for each of the plurality of links (115a, b) with the further MLD (120; 110) and encrypt and / or digitally sign at least a portion of one or more frames based on the link protection key of the plurality of link protection keys associated with a selected link of the plurality of links (115a, b). Moreover, the MLD (110; 120) is configured to transmit the one or more frames to the further MLD (120; 110) via the selected link. The MLD (110; 120) provides an improved per-link security.

The embodiment of the application discloses a test data processing system, an algorithm graph generator, a storage chip automatic test device, a link protection code generation method, a test data processing method and a computer program product, and belongs to the technical field of storage chip testing. The system comprises: a configuration register group, used for storing static preset parameters of a current test mode, wherein the static preset parameters at least comprise a storage interface protocol rule used by the current test mode; a burst context extraction circuit, used for detecting a start signal of burst transmission in a dynamic running process of an algorithm graph generator, extracting dynamic burst information and original test data of current burst transmission; and a link protection code generation circuit, used for analyzing the dynamic burst information and the original test data according to the storage interface protocol rule obtained from the configuration register group, and dynamically generating a link protection code of current burst transmission. The application can greatly reduce test complexity and significantly improve test efficiency.

The invention discloses a ring network link protection and switching method. A ring network link comprises at least one master control node, at least two common nodes and a bidirectional link between the nodes. The master control node and the common nodes learn message forwarding paths in each preset scene in advance; wherein the preset scene comprises each link fault polling scene, and each link fault polling scene is a scene in which each bidirectional link has physical faults in sequence; receiving service data, determining a current scene of the looped network link, and comparing the current scene with each preset scene; and if the comparison is successful, forwarding the service data according to the message forwarding path corresponding to the successfully compared preset scene. According to the method and the device, the looped network static forwarding table path is learned in advance, and when the fault occurs, the message forwarding path table corresponding to the fault scene can be quickly refreshed, so that the sending of the flooding message in the vehicle-mounted network is avoided, and meanwhile, the condition that a user sets the forwarding table path by himself or herself to mismatch or mismatch is avoided.

The invention discloses an excavator controller and a program protection method thereof. The controller comprises a PCB integrated with a microswitch, a processor and a communication interface. A trigger point of the microswitch is higher than the surface of the PCB, and the shell is pressed to be closed when being assembled; the processor is used for detecting switch states; when it is continuously detected that the switch is switched off, it is judged that the shell is detached, specific data in a program storage area is modified immediately to achieve program locking, and the output power of an engine is reduced; and the locked program cannot run in the local machine and also fails when being copied to other processors. An instruction is sent by a special unlocking tool through a communication interface, so that the modified program data can be recovered, and the controller is recovered to be normal; according to the method, full-link protection from physical detection, active locking to safety recovery is achieved, the controller program is effectively prevented from being illegally stolen or tampered, and the method has high reliability, high safety and maintainability.

This terminal comprises: a communication unit that receives, from a base station, information pertaining to a time division duplex (TDD) pattern in a non-terrestrial network (NTN); and a control unit that determines, on the basis of the information pertaining to the TDD pattern, a TDD pattern in which one cycle is configured in the order of a downlink, a guard period, and an uplink, and which has a cycle that is an integral multiple of a radio frame. The communication unit executes transmission and reception with the base station by applying the determined TDD pattern.

The invention discloses a ship wireless transmission link protection method, which comprises the following steps of 1, performing risk assessment, performing risk assessment on a ship wireless transmission link, obtaining risk assessment information, and formulating a protection scheme according to the risk assessment information; 3, performing technology deployment, namely deploying and using the protection scheme; 3, carrying out real-time monitoring and early warning, deploying a sensor and a monitoring tool for monitoring, and establishing an early warning mechanism at the same time; 4, emergency response and recovery are carried out, an emergency plan is made, data backup and recovery are carried out, and system isolation and recovery are carried out; and 5, performing network security awareness evaluation on the sailors, and performing skill training on the sailors with abnormal network security awareness evaluation. According to the invention, more comprehensive ship wireless transmission link protection can be carried out.

The invention relates to the technical field of safety ropes, and particularly discloses a safety belt, a safety belt lock catch alarm device and an alarm method.The safety belt lock catch alarm device comprises a lock catch alarm device body, a safety belt body, a hanging ring, a tower climbing rope and a hook. The safety belt wearing state is verified through a metal conducting strip in a hanging ring, and the foundation anchor point is reliable; the double hooks integrate metal conduction and mechanical pressing double switches, effective mounting of a metal or nonmetal area of the iron tower is accurately recognized, and the misjudgment defect of a traditional single detection mode is eliminated; the main control box is fused with multi-source signals to establish a grading decision, and when it is detected that a hanging ring is not fixed, double hooks are not mounted or single hook communication fails, sound-light alarm and internet-of-things remote early warning are triggered. According to the alarm method, the false alarm rate can be compressed to be nearly zero, the accident response efficiency is remarkably improved, and a fixed end-dynamic end-equipment end full-link protection system is constructed.

This invention relates to the field of drive system control, and discloses an electric drive fault control method, device, computer equipment, and vehicle. The method includes: responding to a fault trigger signal output by the hardware layer of the electric drive system; monitoring the low-level duration of the fault trigger signal through the software layer of the electric drive system, and determining the fault type of the electric drive system based on the low-level duration; and controlling the electric drive system to perform corresponding actions based on the fault type. This invention solves the problem in the prior art where the fixed fault analysis time makes it impossible to distinguish between intermittent noise and continuous real faults, resulting in frequent false alarms and missed alarms in drive link protection.

The invention provides a method for rapidly switching vrrp main and standby services on a switch. The method comprises the following steps: step 1, acquiring quintuple information of each actual service flow message; step 2, detecting quintuple information of each response flow message based on a service flow message tracking mechanism, and if the quintuple information of the corresponding response flow message cannot be detected within a specified time, recording that the service flow message is lost once; and step 3, judging the fault condition of the three-layer main switch according to the loss condition of the service flow message, and executing the main / standby switching operation of the three-layer switch after the fault of the three-layer main switch is confirmed. According to the method, whether a link protection mechanism needs to be started or not is judged by tracking actual service data messages and quintuple information, normal work of a multilayer protection mechanism can be achieved without additional detection messages, and when networking is conducted with external equipment, due to the fact that only service flow messages of the switch equipment are tracked, external support is not needed, and the network access efficiency is greatly improved. And network stability is improved.

The invention discloses a medium frequency power supply linkage protection control system, comprising at least two linkage protection control modules with the same circuit structure, each linkage protection control module is coupled to its corresponding medium frequency power supply mainboard, and is coupled to other linkage protection control modules through a linkage signal line; the linkage protection control module comprises a conversion unit and a control unit; the conversion unit comprises a signal conversion circuit, inputs a fault signal of the linkage signal line to the control unit, or receives a fault signal of the control unit and converts it to the linkage signal line; the control unit comprises a control circuit and a plurality of levels of switch circuits with the same circuit structure coupled to the control circuit, each level of the switch circuit is respectively coupled to a rectifier or inverter unit control end of the medium frequency power supply, and the control circuit is used to control the switch circuit to turn off the power supply of the rectifier or inverter unit control end after receiving a mainboard fault signal output by the signal conversion circuit, or sends a fault signal output by any level of the switch circuit to the conversion circuit after receiving it.

The invention discloses an anti-theft verification method and system, and relates to the technical field of information security, a linked protection system is formed through three-level cooperative verification of a driving layer, a system layer and an application layer, and in the driving layer, an identification interface with read-only attributes is strongly coupled with hardware peripherals, so that the security of the system is improved. A unique identification code is generated through hard coding of a hardware register address, mirror image transplantation is blocked from a bottom layer, a hidden self-starting service of a system layer is operated preferentially at the initial stage of equipment starting, an unauthorized device cannot load a system function by detecting existence of an interface and legality of the identification code, and an application layer performs secondary verification before a core function is called. The sensitive operation is forbidden, the multi-level verification mechanism enables an attacker to simultaneously break through three levels of hardware binding, system startup protection and application function limitation, full-link security protection for preventing extraction, startup and use is constructed, and the uniqueness of the system and the application is effectively guaranteed.

To provide a terminal and a communication method using time division duplex (TDD) in a non-terrestrial network (NTN) environment.SOLUTION: In a radio communication system, a terminal has: a communication section that receives information on a TDD pattern from a base station in a NTN environment; and a control section that, on the basis of the information on the TDD pattern, determines the TDD pattern having one period formed of a downlink, a guard period, and an uplink in this order and having a period being the integral multiple of a radio frame. The communication section applies the determined TDD pattern to execute transmission and reception to and from the base station.SELECTED DRAWING: Figure 6

The application provides a low-voltage transfer protection device for the end of a DC power supply line of rail transit, comprising a voltage transmitter A, a voltage transmitter B, a low-voltage protection measurement and control unit and a transfer cable, the input end of the voltage transmitter A is connected with the positive pole and the negative pole of the end of the DC power supply line respectively, and the output end is connected with the low-voltage protection measurement and control unit, the input end of the voltage transmitter B is connected with the positive pole of the end of the DC power supply line and the ground wire respectively, and the output end is connected with the low-voltage protection measurement and control unit, and the output end of the low-voltage protection measurement and control unit is connected with the DC distribution system in the traction substation through the transfer cable. And a protection method, whether the voltage measured by the two voltage transmitters exceeds the setting value is judged respectively, if the setting value is exceeded, the DC distribution system controls the corresponding line circuit breaker to transfer. The application significantly improves the reliability, speed and sensitivity of the over-current protection of the DC line, reduces the engineering investment and the operation and maintenance cost.

The invention discloses a high-concurrency access method of a local password service interface and a multi-platform adaptation device, and solves the problems of poor high-concurrency performance and difficulty in cross-platform adaptation of a traditional scheme. The high-concurrency access end is used for constructing an API gateway through asynchronous non-blocking I / O, after protocol analysis and safety verification, a request is input to a four-level priority intelligent task queue, and expenditure is dynamically optimized in combination with a throughput model; tasks are distributed based on a dynamic load balancing mechanism of indexes such as CPU utilization rate and queue length, asynchronous processing and intelligent caching (the hit rate is larger than or equal to 85%) are matched, the throughput is improved by more than two times compared with a traditional scheme, and real-time task millisecond-level response is achieved. And the multi-platform adaptation end is used for generating a feature report through full-dimensional platform detection, matching an optimal algorithm and a hardware module by a self-adaptive execution engine, and unifying an interface to hide a bottom layer difference. Full-link protection and exception handling guarantee that the core service interruption rate is smaller than 0.005%, and the method is suitable for the key fields of finance, power grid dispatching and the like.

The invention relates to the technical field of fire alarm circuits, in particular to a display control link protection circuit of a fire alarm system, which can obviously enhance the electromagnetic compatibility of a display unit, and comprises a system control circuit, a power supply circuit, a communication circuit and a TFT (Thin Film Transistor) screen driving interface circuit, the communication circuit comprises an isolated transceiver U11 with the model of TDA51S485HC, the TFT screen driving interface circuit comprises a TFT screen driving circuit and a TFT screen interface circuit, the TFT screen interface circuit comprises a TFT screen interface J6, and magnetic beads are connected in series on a data bus and a control signal link, which are connected with the TFT screen interface J6, of the single chip microcomputer U1.