19results about How to "Implement automatic recovery" patented technology

The invention is suitable for the technical field of artificial intelligence, and provides a block chain-based park face recognition security system, which comprises a data processor used for obtaining ciphertexts of face features of all employees of a corresponding enterprise, and uploading the ciphertexts to an enterprise block chain of the corresponding enterprise; the block chain module is used for synchronizing the ciphertext in each enterprise block chain to other enterprise block chains through a consensus mechanism, and synchronizing the ciphertext in each enterprise block chain to the park block chain of the park through a smart contract; and the block chain module is also used for comparing the hash value of the park block chain with the hash value of each enterprise block chain through the smart contract, and if the hash value of the park block chain is inconsistent with the hash value of any enterprise block chain, determining a main chain used as a data synchronization standard, and synchronizing the ciphertext stored in the main chain to other chains. The access system can be prevented from being paralyzed when the park access system is successfully attacked, and the personal data security of employees is effectively protected.

The utility model belongs to the field of home decoration, particularly relates to a modular combined type rapid furniture installation structure, and provides the following scheme aiming at the problems that an existing modular combined type rapid furniture installation structure is inconvenient to carry after being integrally assembled, and most damaged seats cannot be repaired or the maintenance cost is too high, the modular combined type rapid furniture installation structure comprises an air spring and a plurality of supporting legs, the top of a push rod of the air spring is fixedly connected to the bottom of the cushion, a plurality of inserting grooves are formed in the circumference of the bottom of the air spring, the circumference of the air spring is sleeved with a limiting ring, the base is located above the base, a plurality of notches are formed in the circumference of the limiting ring and the circumference of the base, and one side of each supporting leg is fixedly connected with an inserting block. All parts at the bottom of the seat are mutually matched and connected through the inserting blocks, the notches, the inserting grooves and the positioning pins, the parts can be more conveniently installed and replaced, the adjusting assembly achieves angle adjustment and automatic recovery under the action of the teeth and the force bearing plate, the back support is pushed by the threaded rod to move front and back, the back is supported, and back fatigue of a user is relieved.

The present invention relates to a brushless DC motor control circuit and method with overcurrent protection, which belongs to the field of brushless DC motor commutation technology, and solves the problems of large switch loss and motor loss in the existing motor commutation control circuit. It includes: a commutation control logic circuit, which is used to receive and process a direction control signal, a PWM signal, a position Hall signal output by a brushless DC motor, an overcurrent protection signal, and a signal after a position Hall signal and a direction control signal are subjected to a non-logical operation, and generate a commutation control logic signal adapted to the H‑ON_L‑PWM modulation mode; a drive circuit, which is used to amplify the commutation control logic signal and obtain a drive signal; a power main circuit, which is used to perform an H‑ON_L‑PWM modulation process based on the drive signal, output a motor input control signal, and use the input control signal to drive the brushless DC motor to work; and is also used to output an overcurrent signal when the brushless DC motor is detected to be overcurrent; an overcurrent protection circuit, which is controlled by the overcurrent signal and generates an overcurrent protection signal.

The present invention belongs to the technical field of electret porous membranes, and specifically discloses a method for preparing a charge self-restoring electret composite porous membrane and its application, comprising the following steps: S1, dispersing water-soluble particles and polytetrafluoroethylene particles in a curable polymer liquid in a certain proportion, and obtaining a mixed solution A after uniform mixing; S2, preparing a lower porous membrane by an electrostatic spinning method; S3, dispersing the mixed solution A obtained by S1 on the upper surface of the lower porous membrane obtained by S2 for high-temperature curing, and preparing an upper porous membrane on the lower porous membrane; S4, subjecting the upper porous membrane obtained by S3 to a high-temperature water bath to obtain a composite porous membrane; S5, corona charging the composite porous membrane obtained by S4 to obtain an electret composite porous membrane. The present invention adopts the above-mentioned method for preparing a charge self-restoring electret composite porous membrane and its application, which is simple to operate and has stable properties, and solves the problem that traditional electret porous membranes are easily ineffective and difficult to apply in high-humidity environments and water conditions.

The invention relates to the field of circuit protection and electric automobiles, in particular to an electrical loop protection device which comprises a first excitation fuse and a first mechanical switch, the first excitation fuse can be connected into an electrical loop in a series connection mode, and the first mechanical switch and the first excitation fuse are connected in parallel to form a first reset branch; in an initial working state, the first excitation fuse is in a conducting state, and the first mechanical switch is in a normally open state; when the electrical loop has a fault current or the current exceeds a threshold value for the first time, the first excitation fuse acts according to a received trigger signal and disconnects the electrical loop for the first time, and when the electrical loop reaches a reset condition, the first mechanical switch is closed according to a received closing instruction, so that the first reset branch is connected to the electrical loop in a conducting manner, and the electrical loop is reset. And the electrical loop is conducted again for the first time. According to the electrical loop protection device, disconnection and resetting of an electrical loop can be achieved, the maintenance and replacement time is shortened, and the working efficiency and economic benefits are improved.

The invention belongs to the technical field of vehicle-mounted networks, and discloses a 10BASE-T1S network fault rapid positioning method and system, and the method comprises the steps: constructing a fault management sub-layer which comprises a master node and slave nodes; the master node receives health frames sent by the slave nodes according to a preset period, and the master node constructs a node sequence mapping table when receiving the health frames; determining a fault suspicious interval according to the fault initial judgment result; the sequence breakpoint analysis comprises single node breakpoint analysis, continuous node breakpoint analysis and sequence jump anomaly analysis; determining a target fault node; determining a fault node type to which the target fault node belongs based on a self-checking feedback result; and executing a hierarchical recovery strategy according to the fault node type. According to the method, the fault type is accurately judged, the troubleshooting efficiency is high, the fault recovery does not need manual intervention, the bandwidth occupation is small, and the problems that the fixed polling frequency is adopted and the bandwidth occupation is uncontrollable are avoided.

The invention discloses a microstructure multilayer material recovery method and system, and the method comprises the steps: constructing a SpongCage-based multilayer microstructure material model, taking each layer of material as a volume medium, and enabling no interface to exist between layers; the optical property of each layer of medium is determined through a phase function; the material parameters and the chartlet of each layer of medium are used as input values of a multilayer microstructure material model based on SpongCage; the multi-layer microstructure material model based on the SpongCage is rendered, and the multi-layer microstructure material model based on the SpongCage outputs a three-dimensional rendered image; calculating a loss function between the three-dimensional rendering image and the image shot by the camera in the rendering process, updating the material parameter of each layer of medium by using an optimizer according to the loss function value, gradually approaching the real material parameter, and outputting the material parameter of each layer of medium when the set iteration frequency is reached, and obtaining a simulation material model of the real multi-layer microstructure material sample.

The application discloses a kind of external storage device mounting function real-time monitoring and automatic recovery processing method and system, it is related to car field, including: by listening to the mounting process message reported on underlying drive, detect the mounting success or failure event of external storage device;In mounting success with the way of input-output error information in the form of timing query or monitoring system log detects read-write exception;If mounting failure or read-write exception is detected, then by writing control instruction to operating system hardware control interface simulates physical plug-in action, triggers device reenumeration and re-executes mounting;Retry number is recorded, and it is repeated above-mentioned step without threshold, and after threshold, fault prompt is sent to upper layer.The application also discloses corresponding system.The application adopts dual-mode monitoring of message and polling and pure software simulation plug-in reset, without manual intervention, can automatically recover the mounting and read-write exception of external storage device, improves the stability and user experience of car system.

The application discloses a kind of adaptive radio frequency interference cancellation method and system in full duplex system, including from the transmission link of full duplex system coupling out part transmission signal, as self-interference reference signal;Self-interference reference signal is fed into at least one adaptive adjustment branch;Each adaptive adjustment branch is independently digitally adjusted to the amplitude and phase of self-interference reference signal based on the control word generated by control algorithm, generates a cancellation signal;The received signal obtained from receiving antenna is synthesized with cancellation signal, to generate synthesis signal;By adjusting the amplitude and phase of cancellation signal, it is equal to the amplitude of self-interference component in received signal and opposite phase, so that the self-interference component in synthesis signal is cancelled, to realize the self-interference cancellation of radio frequency domain;The application significantly improves the self-interference suppression capability of radio frequency domain of full duplex system.

The utility model relates to the technical field of compensation devices, and discloses an automatic recovery pipeline self-adaptive compensation device which solves the problem that an existing compensation device is poor in protection effect and comprises a compensator body and a protection assembly installed at the top end of the compensator body. The compensator body is composed of a first flange plate, a second flange plate, an elastic corrugated pipe, an axial limiting sleeve, a plurality of first limiting assemblies and a plurality of second limiting assemblies, the elastic corrugated pipe is connected between the first flange plate and the second flange plate, the elastic corrugated pipe is sleeved with the axial limiting sleeve, the first limiting assemblies are connected between the first flange plate and the axial limiting sleeve, and the second limiting assemblies are connected between the second flange plate and the second flange plate. The second limiting assembly is connected between the second flange plate and the axial limiting sleeve, and the first limiting assembly and the second limiting assembly are each composed of a support, a long screw, an open threaded sleeve, a closed threaded sleeve and a positioning sleeve. The compensation device can be self-adaptive to axial thermal expansion and cold contraction of the pipeline, and has a protection effect at the same time.

The invention discloses a centralized control center signal abnormity intelligent discrimination and recovery method based on multi-system linkage, and relates to the technical field of monitoring, and the method comprises the steps: obtaining multi-source real-time signals from a scheduling SCADA system, a plant station DCS system and a protection monitoring system, and aligning the signal data of each system based on timestamps to form a synchronous data stream; performing joint detection on the synchronous data flow by adopting a time sequence consistency analysis and electrical physical constraint model, identifying abnormal states of signal mutation, loss or drifting, and generating an abnormal mark; performing cross validation by using multi-system redundant signals, constructing a signal credibility matrix according to signal source quality score and time continuity analysis, and selecting an optimal data source to complete abnormal signal recovery; and when all source signals are detected to be abnormal, starting a virtual signal prediction model, combining historical data and a system physical model to generate a replacement signal, and inputting the replacement signal into a monitoring system. The embodiment of the invention effectively reduces manual intervention and ensures safe and stable operation of a power system.

The application discloses a flexible anti-falling device for power transmission line inspection and relates to the technical field of power transmission line inspection.The device comprises a shell, a plurality of adjusting rods one and two are slidably connected to the top of the shell, an opening and closing assembly is rotatably connected to the bottom of the adjusting rods one and two, a swing rod is rotatably connected to the top of the adjusting rod two, and an opening and closing guide plate is fixedly connected to the top of the adjusting rod one.The bottom of the support frame is first contacted by the inclined surface of the opening and closing guide plate at the front end of the lower adjusting rod during the movement, the reaction force forces the adjusting rod to move downward, the opening and closing turntable is further pushed to rotate, the upper swing rod and the adjusting rod are lifted through the connecting rod, and preparation for avoidance is made, then, the avoidance guide plate inclined surface at the front end of the swing rod contacts the upper connecting rod of the support frame, the swing rod and the clamping wheel assembly at the top are deflected to one side, and thus the obstacle is smoothly bypassed, the process depends on the mechanical action of physical contact and the guide inclined surface, and no additional sensor or control is needed, and the structure is simple and reliable.

The present application relates to cable technical field, specifically said is special anti -pressure cable, including: inner layer structure, outer layer structure and the anti -pressure layer between inner layer structure, outer layer structure, the anti -pressure layer includes anti -pressure piece and band, the anti -pressure piece includes the multiple arc -shaped pieces that are evenly distributed in circumference, the band is wound in the anti -pressure piece, both ends of the band are connected to the outer layer structure, the anti -pressure piece includes anti -pressure state and flexible state, the band is tightened or relaxed in response to external pressure, the present application sets up the anti -pressure piece with anti -pressure state and flexible state, corresponds the laying stage and service stage of cable respectively, and is provided with the band that is wound in the anti -pressure piece simultaneously, when external pressure acts on the cable, the cable is flattened to form oval along the direction of pressure, the band is automatically tightened and applies the hoop force that is radially inward to the anti -pressure piece, so that the anti -pressure piece can be switched from flexible state to anti -pressure state passively based on external pressure.

The invention relates to the technical field of old people restraint, in particular to a clinical old people restraint device based on the senile disease department, the clinical old people restraint device comprises a bed board, a supporting component is fixed to the bottom end of the bed board, the clinical old people restraint device further comprises a hand and foot restraint mechanism, and the hand and foot restraint mechanism comprises two hand rings and two foot rings which are arranged on the bed board and used for restraining wrists and ankles. Self-adaptive adjustment can be carried out according to the thicknesses of wrists and ankles of the old people through an arc-shaped protection plate and a connecting spring, the comfort and safety of the restraint device are ensured, skin injuries and pressure sores caused by too tight fixation are prevented, meanwhile, a conducting strip can be driven to move on a resistance plate through the arc-shaped protection plate and a detection rod, and the safety of the restraint device is improved. According to the device, the stress condition of the wrist and the ankle in the initial state is detected, then the electric telescopic rod is correspondingly controlled to drive the anti-skid plate to restrain the connecting plate so as to restrain movement of the wrist and the ankle, and the restraining force on the connecting plate can be dynamically adjusted according to the magnitude of force applied by movement of the old.

This application provides a method, device, and storage medium for controlling the operation of rail vehicles, including: acquiring basic parameters of the rail vehicles, information on delayed rail vehicles, and information on normally operating rail vehicles; acquiring the interval category between rail vehicles based on the information on delayed and normally operating rail vehicles; and controlling the operating status of all rail vehicles according to the interval category to conform to the planned operation schedule. This technical solution, addressing the situation where trains are delayed and the operation order of the line system is disrupted, sets different interval categories to make effective emergency dispatching and operational adjustments in real time, establishes a collaborative mechanism between individual trains within the system, and then achieves automatic restoration of train operation order by constructing self-organizing rules for train operation adjustments.

The invention provides an emergency material transportation robot, and belongs to the technical field of robots. Comprising a plate body, clamping assemblies are symmetrically installed on the two sides of the inner wall of the plate body, the clamping assemblies are used for fixing an emergency material box, and the clamping assemblies are connected with the plate body; and the lifting assembly is used for facilitating automatic unloading, and the lifting assembly is connected with the plate body. By arranging the clamping assembly and the lifting assembly, the clamping assembly and the lifting assembly are arranged on the inner wall and the bottom of the plate body correspondingly, and the clamping assembly can clamp and fix the emergency material box and can further clamp and support the emergency material box when the emergency material box moves downwards due to bumping in the advancing process of the robot; and the lifting assembly not only can buffer and stabilize the robot after stopping, but also can pull the clamping assembly in the descending process, and therefore manpower can be replaced to achieve automatic unloading of the emergency material box.

The utility model discloses a central air conditioning air supply adjusting device, including the shell, the shell is inserted with the butt joint frame, the inner wall of shell is fixedly connected with the support frame, the butt joint frame and the support ring between abutment have the filter screen, the butt joint frame is fixedly connected with the equal interval distribution's air deflector, the four corners of butt joint frame all is provided with the through slot, the through slot of butt joint frame is fixedly connected with the fixed column, the fixed column sliding connection has the limit hook, the limit hook with spring no.

The application discloses a kind of long-time assembly task planning method and system of robot based on reversibility constraint. For the problem of step irreversibility in assembly task, high failure cost, reversibility and failure semantics of assembly subtask are explicitly modeled in task planning layer, a subtask irreversible risk measurement model is constructed, and on this basis, risk-aware assembly task sequence planning is carried out, so as to reduce the probability of irreversible failure. In the execution phase, for each assembly subtask obtained by planning, a visual-language-action model is used to directly control the robot to complete specific operations, achieving effective collaboration between high-level planning and low-level operations. The application can significantly improve the safety and success rate of the robot in complex assembly tasks, and is suitable for long-time, multi-step industrial assembly scenarios.

The invention relates to the technical field of radio frequency electronics, and discloses a multi-channel radio frequency signal source device and an implementation method, and the device comprises a satellite receiver, a frequency reference source, a clock signal source, a multi-channel radio frequency signal source, a frequency monitoring module and a phase monitoring module. The frequency reference source locks a satellite signal generation benchmark; the clock signal source generates a driving clock based on a reference; the multi-path radio frequency signal source generates multi-path radio frequency signals by using a driving clock based on a direct digital frequency synthesis principle; the phase monitoring module measures signal phase difference through IQ phase discrimination and feeds back the signal phase difference, and realizes closed-loop phase locking in cooperation with multiple paths of radio frequency signal sources. A two-stage driving framework is adopted, synchronous frequency modulation of multiple paths of signals can be achieved by adjusting a clock, the phase relation is not changed, and automatic phase recovery after independent frequency modulation can be achieved through phase compensation. The invention has the advantages of continuous frequency modulation phase, stable amplitude, no need of automatic level control, low phase noise, high phase resolution and the like.