177 results about "System protection" patented technology

The invention relates to the technical field of communication equipment operation and maintenance, in particular to a serial port equipment firmware upgrading method and system. The serial port equipment firmware upgrading method comprises the steps that an upgrading task instruction issued by a remote management platform is received, and after equipment identity verification and upgrading file integrity verification are executed, system protection measures are started; creating a security isolation sandbox environment, forbidding a high-risk function module in a script execution environment, and defining addressing parameters of target serial port equipment; standard scripts are loaded, and serial port read-write, file operation and state reporting type security interaction interfaces are injected; calling a mode switching function of the standardized script, so that the serial port equipment is switched to a firmware upgrading mode from an operation mode; cyclically calling a data transmission function of the standardized script to transmit firmware data in blocks, and synchronously implementing timeout monitoring; and after upgrading is completed or abnormal interruption occurs, the security isolation sandbox environment is destroyed, the original business is recovered, and an upgrading result is reported to the remote management platform.

The invention discloses a protection setting calculation and optimization method based on an intelligent power plant management platform, and relates to the technical field of power system protection. By constructing a platform and equipment communication link, integrally collecting and preprocessing internal and external parameters, and dynamically updating topology and model parameters in combination with a switch state, the problem that a traditional static model is difficult to adapt to operation changes is solved, the timeliness and accuracy of the model are improved, a multi-scene database is constructed in a classified mode, labels are labeled, and the efficiency is improved. Fault current distribution is accurately calculated, constant value adaptability verification is carried out, constant value optimization is carried out in combination with a multi-objective optimization algorithm and sensitivity analysis, limitation of single-scene constant values is avoided, constant value conflicts under different scenes are reduced, reliability of initial constant values is guaranteed, sensitivity analysis is superposed, it is ensured that the constant values are still reliable during parameter fluctuation, and the reliability of the constant values is improved. The risk of protection operation refusal and misoperation is reduced, a constant value is issued, the device state is monitored in real time, evaluation indexes are calculated, the constant value is controllable in the whole process, and stable operation of the device is guaranteed.

An illustrative data storage management system comprises a management database that stores administrative preferences and system configurations, as well as results and / or statistics of completed secondary storage operations, i.e., information needed by the system to protect customers' data and to track and recover the protected data, including secondary copies such as backup copies, archive copies, etc. The disclosed data storage management system is configured to protect its own system data subject to a very aggressive (short) Recovery Point Objective (RPO), by using an innovative infrastructure that enables the system's storage manager to fail over to any number of other failover destination storage managers, each one comprising a destination management database. An illustrative database granularly tracks whether each and every transaction log file has been successfully applied to each and every destination management database to synchronize with the source management database.

The invention discloses an AC-DC power grid intelligent scheduling and protection control method, system and device and a medium, and belongs to the technical field of intelligent power grid operation control, and the method comprises the steps: constructing an AC-DC cooperative scheduling model, dynamically predicting new energy output and load demands, and generating a coordination instruction; establishing a multi-stage linkage protection framework based on a scheduling result, and defining alternating current and direct current system protection collaborative logic; integrating the heterogeneous operation data of the AC / DC system to construct a unified analysis model; a dynamic power flow distribution strategy is optimized in a rolling mode through a deep reinforcement learning algorithm; according to the real-time operation state, dynamically correcting protection parameters and triggering edge side fault quick response; and a closed-loop technical link is formed, and a preorder result drives a subsequent action, so that self-adaptive coordination of scheduling, protection and control is realized. According to the invention, through an AC / DC cooperative scheduling and multi-stage protection architecture, in combination with a deep reinforcement learning algorithm and a dynamic protection mechanism, a "scheduling-protection-control" three-dimensional decision-making system is constructed, and the stability of a power grid is improved.

The invention relates to a domestic trusted dual-system protection method and system oriented to industrial control, and belongs to the technical field of industrial control security, and constructs a dual-system architecture based on hardware isolation: a domestic operation subsystem executes service logic, and a protection subsystem realizes independent security control through a TCM / TPCM trusted root. And the protection subsystem has a one-way access permission to form a hardware-level protection barrier. When the system is started, UBoot, a kernel and an application program are measured step by step through a TPCM chip, and a trusted chain is constructed; during operation, the active monitoring module calculates a process hash value in real time, compares the process hash value with the reference library, and executes security policies such as process termination / network blocking. The executable file, the network port and the source IP access control are covered by adopting a white list technology of encrypted signature. The full-period active protection of the terminal from starting to running is realized, the defect that a traditional scheme depends on kernel safety is overcome, the safety and reliability of a system are remarkably improved, and the requirement of an industrial control system for protection 2.0 is met.

The utility model discloses a terrestrial magnetism acquisition device, and belongs to the field of instruments and meters. A shell of the geomagnetic acquisition device is of a cylindrical sleeve structure and comprises a top cover, a middle section and a bottom cover. The battery is arranged between the bottom cover and the middle section; the bracket is arranged above the battery and is positioned in the top cover; the PCB is arranged on the bracket and is connected with the battery; the geomagnetic sensor is arranged on the PCB and is used for collecting geomagnetic signals; the communication unit is arranged on the PCB and used for outputting geomagnetic signals. A cylindrical sleeve structure is adopted to improve the system protection level and facilitate mounting and dismounting; the low-power-consumption design ensures that the long-term outdoor working time is more than 10 years, and the maximum power consumption during working is only 2mA; the geomagnetic sensor collects magnetic field data in real time, the magnetic field data is processed by the communication unit and then output and uploaded to the cloud, efficient collection and transmission of the geomagnetic data are achieved, and the overall performance of the system is improved.

This invention discloses a protection and control method and system for a high-pressure feedwater pump system during the start-up and shutdown process of a gas turbine unit, belonging to the field of intelligent control of gas turbine units. It includes a first subtraction module, a first less than comparison module, a second less than comparison module, a third less than comparison module, a first quality judgment module, a second quality judgment module, a first NOT module, a second NOT module, a third NOT module, a first AND module, a second AND module, a third AND module, a fourth AND module, a first delay module, a second delay module, a third delay module, and a first OR module. The main functions of this invention include: achieving adaptive protection throughout the start-up and shutdown process, multi-system collaborative control, improving the safety and reliability of pump unit operation, reducing the intensity of manual intervention, and adapting to the operational needs of frequent start-up and shutdown and rapid load changes of the unit.

The application discloses a method for digital storage of relay protection setting value single, which comprises the following steps: combing the style of a PDF setting value single, making different analysis templates, converting table data in the PDF into JSON array data, storing the distance of each upper left corner, i.e. latitude and longitude, the width and height of each itself and the grid content in the JSON data, obtaining corresponding data through position characteristics, and performing structured storage. Through the digital storage of the protection setting value single, the application verifies the correctness of the protection setting value of the relay protection setting system and the protection signal system, so as to ensure the consistency and accuracy of the setting value between the systems.

The embodiment of the invention provides a motor torque monitoring method and device, equipment and a medium, and relates to the technical field of vehicles. The method comprises the following steps: in a first processing unit in a motor controller, obtaining a functional layer estimation torque through an electromagnetic torque algorithm based on a three-phase current signal; in a second processing unit in the motor controller, a safety layer estimation torque is obtained through a power torque algorithm based on the bus voltage signal and the bus current signal, and the first processing unit and the second processing unit are physically isolated; and determining the state of the torque based on the comparison of the estimated torque of the motor function layer and the estimated torque of the safety layer, and executing a corresponding system protection strategy based on the torque state. According to the method, the problem that the vehicle safety is affected due to the fact that torque monitoring is prone to misalignment when equipment abnormity or working condition abnormity occurs in motor torque monitoring in the related technology is effectively solved.

A solid-state power controller, by setting up a power supply voltage acquisition module, a load voltage acquisition module, and a current detection module, and in conjunction with the analysis and judgment function of a signal processing module, can quickly output control commands when abnormal states such as overvoltage, overcurrent, or short circuit occur in the power supply and load. This drives the control switch module to cut off the output circuit in a timely manner, improving the system's protection capability and safety. Fault information from the power supply voltage acquisition module, load voltage acquisition module, and current detection module is simultaneously uploaded to the host computer, enabling rapid identification of the fault source.

The invention discloses a refrigeration enthalpy increasing control method and system based on intermediate pressure and multi-parameter coupling. The method comprises the steps that the intermediate pressure, the operation frequency of a compressor and the temperature of a coil pipe are collected in real time; the basic enthalpy increasing opening degree is determined on the basis of the intermediate pressure, a dynamic compensation value is calculated on the basis of the coil pipe temperature, the basic enthalpy increasing opening degree is combined with the dynamic compensation value, and the target opening degree of the electronic expansion valve for enthalpy increasing is determined; and the electronic expansion valve for enthalpy increasing is adjusted according to the target opening degree of the electronic expansion valve for enthalpy increasing, and therefore refrigeration enthalpy increasing control is achieved. According to the invention, rapid response, accurate adjustment and system protection of enthalpy increase control are realized.

This invention relates to the field of industrial internet security technology, and discloses a method and system for evaluating industrial internet data security protection capabilities. The method includes acquiring network traffic logs and system response records; performing time-series correlation analysis and sequence causal relationship completion based on the logs and records to obtain a dynamic evolution sequence of attack behavior; constructing an attack path graph model and parsing the correlation structure based on the sequence to obtain an attack path correlation structure; identifying high-latency paths and calculating response time differences to obtain a set of high-latency paths; extracting time feature vectors and quantifying the similarity of protection effectiveness from this set to obtain a quantitative score for path protection effectiveness; combining the score and difference index to perform a comprehensive risk assessment of physical topology mapping and node cascade failure analysis to obtain the system's comprehensive protection weaknesses; and performing adaptive scenario reconstruction closed-loop verification based on the weaknesses. This method can achieve accurate evaluation and dynamic verification of system protection weaknesses in complex adversarial scenarios.

The signal dynamic gain control system provided by this invention constructs an adaptive gain adjustment path through a first operational amplifier circuit and a feedback control circuit. This allows for real-time adjustment of the pre-amplification factor based on the signal strength at the front end of the analog-to-digital converter, avoiding signal overload caused by fixed gain and improving the system's adaptability to dynamic audio input. Furthermore, a comparison circuit composed of a voltage comparator and a programmable reference voltage source enables real-time judgment of high and low level logic signals, facilitating the construction of a control feedback link with a response time in the microsecond range and enhancing the system's protection sensitivity.

PROTECTION SYSTEM WITH A CALIBRATED CLAMPING SYSTEM The invention comprises a rail (100) including a shaft (102) carrying a first shoe (104) and having a passage (106), a slide (108) with a first end mounted to slide within the shaft (102) through the passage (106) and a second end (108a) having a bore (110), a locking means (112) for the slide (108) relative to the shaft (102), a threaded rod (114) inserted into the bore (110) and carrying a second shoe (116), and a nut (118) screwed onto the threaded rod (114), wherein the rail (100) further includes a spring (150) fitted around the threaded rod (114) between the nut (118) and the slide (108), and a secondary shaft (152) arranged around the spring (150) between the nut (118) and the slide. Fig. 1

Methods and systems are provided for securing vehicle access from cyberattacks via a keyless system. In an embodiment, a method for a vehicular keyless entry system is provided, comprising processing, at a vehicle, a keyless-entry transmission carrying an identification (ID) code portion; decrypting the ID code portion of the keyless-entry transmission using a private key of the vehicle; detecting whether the decrypted ID code portion matches one of a plurality of predetermined function codes of the vehicle; and executing a functionality of the vehicle corresponding with a function code of the vehicle that matches the decrypted ID code portion.

This application relates to a method, apparatus, computer equipment, medium, and product for protecting a power transmission system. The method includes: acquiring the position signals of a bypass breaker and a bypass disconnector, wherein both the position signals of the bypass breaker and the bypass disconnector include one of a closed position signal and an open position signal; acquiring a first current value on the bypass breaker, acquiring a second current value on the neutral bus, and acquiring a third current value on the positive bus; and determining whether to control the bypass breaker to close to protect the power transmission system based on the position signals of the bypass breaker, the bypass disconnector, the first current value, the second current value, and the third current value. Thus, through verification under the above multiple conditions, the closing status of the bypass switch can be accurately controlled, avoiding malfunctions of the bypass switch and improving the reliability of the power transmission system.

The invention relates to a fuel cell system protection control system and method based on cooperative judgment of working condition stability and performance degradation rate, and the system comprises a multi-parameter detection module, a working condition stability judgment module, a performance degradation rate calculation module and a protection logic control module. The method comprises the following steps: acquiring a working condition parameter signal of the fuel cell system in real time; judging whether the current fuel cell system is in a working condition stable state or not according to the collected working condition parameter signals, and calculating the performance attenuation rate of the fuel cell system in the working condition stable state; and according to the calculated performance attenuation rate, in combination with a current attenuation rate threshold, judging whether to trigger protection, and executing a hierarchical protection strategy. Compared with the prior art, the method has the advantages that the problem that the fuel cell system is lack of timely protection due to short-time rapid reduction of the performance in a toxic gas environment can be solved through dual criteria of the working condition stability and the performance degradation rate, and rapid protection response can be realized without depending on a gas sensor.

The invention discloses an antenna system of an unmanned aerial vehicle interference gun, which relates to the technical field of antennas, and comprises a multi-frequency-band radiation unit covering common frequency bands of an unmanned aerial vehicle, a beam control module for realizing beam orientation and scanning, a polarization adjustment module for switching polarization modes, and a feed matching module for guaranteeing low-loss transmission of signals. The installation adaptation module provides fixation and angle adjustment, the radiation enhancement module enhances signal focusing, the grounding protection module guarantees safety and electromagnetic compatibility, the multi-unit cooperation module coordinates multi-frequency-band work, the broadband adaptation module expands the bandwidth, and the state monitoring module feeds back the working state of each module. According to the invention, the frequency band coverage range is expanded, and the beam pointing precision and polarization adaptation efficiency are improved; the system is reliable in protection, adapts to different application scenes and unmanned aerial vehicle types, has fault redundancy capability, and gives consideration to practicability and compatibility.

The application relates to the technical field of power system protection equipment, and discloses a circuit breaker which comprises a base and a cover body, the base comprises a bottom plate and two fixed plates, the bottom plate and the two fixed plates enclose a containing groove, the cover body is provided with first fixed blocks aligned with the fixed plates, and the base is provided with a first isolation structure; the first isolation structure comprises a plurality of first isolation strips arranged at one end of the bottom plate facing the fixed plates, a first insulating baffle arranged at the upper end of the fixed plate, and a first isolation block arranged at the upper end of the cover body, the upper end of the first isolation strip is provided with a first insulating baffle, a multi-pole main loop structure is arranged in the containing groove, and the multi-pole main loop structure is located between the first isolation strip and the adjacent first isolation strip / fixed plate; the multi-pole main loop structure comprises a shell, a first conductive terminal is arranged in the shell, the first conductive terminal extends upwards out of the shell and is located between the first isolation strip and the adjacent first isolation strip / fixed plate. The application has the advantages of reducing the failure probability of flashover and short circuit.

A kind of pipeline's sacrificial anode boost power cathodic protection system, in order to solve the problem that pipeline protection distance is shorter when pipeline without external power supply is often used in sacrificial anode protection, cannot realize synchronous power-off test and cathodic protection and corrosion parameter remote monitoring, detection and other automation management, the technical scheme adopted is: using DC / DC boost module to increase the voltage between sacrificial anode and grounding body as power supply, to improve the protection potential of pipeline and realize each automation management function.Pipeline protected by sacrificial anode boost power cathodic protection system can be adjusted to the upper limit of protection potential to increase the length of cathodic protection of pipeline under the premise of meeting cathodic protection criteria, and realize the automation management functions such as synchronous on-off test, cathodic protection and corrosion parameter remote monitoring, detection of pipeline without external power supply cathodic protection with low cost. Figure 1 is the abstract drawing of the present application.

The method and system for identifying new energy power supply under asymmetric fault based on sequence impedance difference, the protection device collects three-phase current and three-phase voltage in real time, and calculates to obtain negative sequence current voltage, zero sequence current voltage and positive sequence current voltage; after the protection is started, the asymmetric fault type is judged; when the ground fault occurs, the modulus difference and impedance angle difference of the negative sequence impedance and the zero sequence impedance are compared to judge the fault characteristics of the power supply behind the protection; when the phase-to-phase fault occurs, the modulus difference of the negative sequence impedance and the positive sequence impedance is compared, and the impedance angle difference of the negative sequence impedance and the positive sequence impedance and the difference between the line positive sequence sensitive angle are combined to judge the fault characteristics of the power supply behind the protection; it is determined that the power supply behind the protection is a new energy power supply, the identification of the new energy power supply under asymmetric fault based on sequence impedance difference is realized, and the safety and reliability of the relay protection under the new energy access to the power system are improved.

The utility model relates to industrial automation equipment vision system protection technical field, concretely relates to a kind of high protection degree industrial camera protection device.The device includes drive unit and protection unit, protection unit is used to cover industrial camera imaging face when protecting state;Drive unit includes drive box, pneumatic mechanism and linear variable rotary motion mechanism are provided in drive box, linear variable rotary motion mechanism includes linear motion piece and rotary motion piece, pneumatic mechanism drives linear motion piece linear motion, linear motion piece drives rotary motion piece rotation, rotary motion piece protection unit is rigidly connected by connecting piece, rotary motion piece swings the protection unit by connecting piece, to open and close industrial camera imaging face.Pneumatic mechanism cooperates linear variable rotary motion mechanism, drives protection unit swing, without complex connecting rod structure, protection unit overturning can be realized, automation drives protection unit cover industrial camera imaging face, without manual opening and closing, ensure operation efficiency.

The invention discloses a short-circuit current calculation method based on a power frequency model, and belongs to the technical field of power system analysis. The method comprises the following steps: collecting basic parameters of a power system under power frequency, wherein the basic parameters comprise system rated voltage, impedance parameters of each element and a system topological structure; constructing a power frequency equivalent model of the power system based on the power frequency parameters, and forming equivalent circuit representation; determining the type and position of a short-circuit fault; based on a power frequency equivalent model, a short-circuit current value is calculated through a circuit analysis technology, an asymmetric fault is processed by adopting a symmetric component method, and the influence of transition resistance can be considered; and outputting a short-circuit current calculation result for system protection or equipment verification. According to the method, the calculation process is simplified, the calculation efficiency is improved, the calculation precision under the power frequency is ensured, and the method has high engineering practical value.

The utility model discloses a shock absorber with a shock absorption system protection device, which belongs to the technical field of shock absorber protection and is characterized in that one end of a shock absorber body is slidably connected with a piston rod, the shock absorber body and the outer side of the piston rod are movably sleeved with a shock absorption spring, and one end of the piston rod is fixedly connected with an extrusion plate; according to the shock absorber with the shock absorption system protection device, through the arrangement of the abutting plate and the extrusion plate, when a piston rod of the shock absorber is extruded, one end of the piston rod does not collide with the interior of the shock absorber body, meanwhile, the extrusion position of a shock absorption spring can be limited, the shock absorber is protected, and the shock absorption system protection device is convenient to use. According to the shock absorber, the service life of the shock absorber is prolonged, through the arrangement of the fixing base and the supporting column, the abutting plate and the adjusting base can be supported and limited, meanwhile, the height position of the adjusting base can be adjusted, and then the elastic strength of the shock absorption spring is adjusted.

The invention provides a multi-mode collaborative lithium battery protection circuit control method. The method comprises the following steps: acquiring voltage, current and surface temperature of a battery pack and a relay state signal in real time, and constructing a standardized time sequence tensor through preprocessing; inverting the core temperature of each single battery based on an electricity-heat-aging coupling model; the aging rate index is dynamically calibrated by combining the joint extended Kalman filtering and the real-time core temperature; a dynamic adjacency matrix is constructed through voltage correlation and temperature gradient, and a topological weakness risk is identified by using a lightweight graph convolutional network; according to the core temperature, the aging index, the risk score and the SOC difference, a protection mode is dynamically switched in a multi-mode logic state machine, and a control instruction is generated; and finally, the time sequence of a power tube is adjusted through PWM phase compensation, and a distributed model prediction control algorithm is adopted to drive an equalization circuit, so that lithium battery system protection with safety, service life and performance collaborative optimization is realized.

The utility model discloses an electric power system protection device optical fiber test automatic plugging tool comprising a clamping assembly and locking mechanisms, the clamping assembly is provided with a plurality of clamping holes, and the clamping holes are respectively used for accommodating the plurality of locking mechanisms; and the locking mechanism is provided with a locking hole for the optical fiber cable to pass through. According to the utility model, the integrated plugging of the optical fiber cable in an automatic test state is realized, and the board card test efficiency is improved.

The utility model discloses a subway track laying fastener system protection structure which comprises a buffering base plate, inserting holes are formed in the four corners of the buffering base plate, fastening bolts penetrate through circular connecting grooves of the protection structure into the inserting holes on the buffering base plate, the protection structure is installed, an arc-shaped transparent plate faces upwards while installation is conducted, and the arc-shaped transparent plate faces downwards. The installation condition of the internal structure of the fastener system is conveniently observed, meanwhile, the side edge of the protection structure can be elastically connected through the addition of the elastic connecting belt, the fastener system is further protected, one end of the elastic connecting belt penetrates through the installation groove in one end to the installation groove in the other side, and therefore the two sides of the protection structure are connected. The side edge structure of the fastener system can be protected conveniently; and after installation is completed, the protection structure is manually heated from the outside till the thermal shrinkage layer on the outer layer of the protection structure shrinks and deforms till the thermal shrinkage layer is completely attached to the surface of the fastener system, and then installation and use of the device are completed.

The invention relates to an abnormal behavior processing method, electronic equipment and a vehicle, and is applied to the technical field of vehicles. The abnormal behavior processing method comprises the steps that under the condition that a resource access interface of a cabin operation system initiates an operation event, original data of the operation event is obtained through a safety monitoring program, and the safety monitoring program is mounted on a kernel layer of the cabin operation system; behavior monitoring is carried out on the operation event based on the original data through a safety protection process, a behavior monitoring result of the operation event is determined, and the safety protection process runs in a user layer of a cabin operation system; and under the condition that the behavior monitoring result is an abnormal behavior, processing the operation event through a security monitoring program or a security protection process. According to the method and the device, the problem of lack of effective interception capability for malicious behaviors of which the highest permission of the system is acquired is solved, and the processing real-time performance of abnormal behaviors and the effectiveness of cabin operating system protection are improved.

The invention discloses an implementation method for circuit breaker state monitoring fused with functions of a protection device, and relates to the field of power system protection, circuit breaker state monitoring is realized by the protection device, and the protection device comprises a circuit breaker control loop, a control loop current signal acquisition loop and a control loop voltage signal acquisition loop. The circuit breaker control loop is provided with current and voltage input and output ends, a control loop current signal acquisition loop is connected in series in the current input and output ends for switching on and tripping, and a control loop voltage signal acquisition loop is connected in parallel in the voltage input and output ends, so that hardware multiplexing is realized; according to the state monitoring method, breaker tripping and closing voltage and current signals and system signals are collected in a single sampling window at the same time, a performance evolution curve is constructed after digital fusion processing, protection logic verification and closed loop feedback are carried out based on the performance evolution curve, and state monitoring and early warning are achieved in combination with recording data analysis. And the operation safety and reliability of the power system are improved.