18results about How to "Avoid data loss" patented technology

This application provides a data transmission method, a network interface card (NIC) for a data receiving end, an electronic device, and a storage medium. The data transmission method is applied to the NIC of the data receiving end. The NIC writes data to the host memory of the data receiving end via a bus. The data transmission method includes: if the bus bandwidth resources required for the NIC to write the target data to the host memory exceed the bus bandwidth resources available to the NIC, then writing a portion of the target data to the NIC's NIC buffer; the NIC buffer includes a first memory buffer configured for the NIC based on its on-chip memory and a second memory buffer configured for the NIC based on its onboard memory; the data sending end sends the target data to the data receiving end via remote direct memory access; and a portion of the data is written from the NIC buffer to the host memory. The solution of this application can better avoid data packet loss problems when facing sudden traffic surges.

The application provides a vehicle hibernation method, medium, vehicle and product, relates to the technical field of vehicle control, and the method comprises the following steps: generating a hibernation preparation instruction and sending the hibernation preparation instruction to an electronic control unit on the vehicle under the condition that the vehicle meets hibernation conditions; receiving confirmation information fed back by the electronic control unit based on the hibernation preparation instruction, performing state detection on the vehicle based on the confirmation information, and obtaining a detection result; wherein the confirmation information is used to indicate that the electronic control unit has completed a hibernation preparation task indicated by the hibernation preparation instruction; and if the detection result indicates that the vehicle is in a standby state, performing a whole-vehicle hibernation operation. The technical scheme of the application sends a hibernation preparation instruction to the electronic control unit first, so that the electronic control unit has sufficient time to complete the hibernation preparation task, effectively avoids the task execution risk caused by direct forced hibernation, improves the reliability and robustness of the vehicle hibernation process, and guarantees the integrity and safety of the vehicle function.

This invention belongs to the field of laser processing modification technology, and relates to a teaching-free laser shock strengthening method and system based on a 3D model and laser point cloud. The system includes a 3D modeling module, a point cloud acquisition module, a point cloud processing module, a path planning module, and a control module. It identifies the area to be strengthened using a 3D information model and plans the initial processing path. High-precision point clouds are acquired using a line laser sensor and monocular vision fusion method, and the deviation matrix of the workpiece to be processed is calculated through registration. Based on the deviation matrix, the initial processing path is transformed and corrected point by point, ultimately generating a robot execution program to control the laser processing device to complete the automated laser shock strengthening operation. This invention achieves fully automated operation from 3D information model to robot operation, effectively solving the problems of traditional methods such as reliance on manual teaching, low positioning accuracy, and difficulty in assessing accessibility.

The invention relates to a power failure protection method and system for storage server equipment and a computer device, and the method comprises the steps: monitoring an output signal of a power supply unit through a CPLD, and generating a non-shielding interruption signal when the output signal of the power supply unit is recognized to be abnormal; the power supply switching control unit controls a power supply mode to be switched from the power supply unit to the battery backup unit, controls related necessary hardware to enter a core closing mode through the ACPI and hardware cooperation module, and interrupts power supply to unnecessary hardware; controlling a dirty data identification unit to read a dirty data bitmap marked by the storage server equipment, and positioning dirty data to be protected in a memory of the storage server equipment; the dirty data transferred and stored in the preset storage unit are verified through the cyclic redundancy check unit, when the dirty data passes verification, the storage server device is controlled to execute the shutdown process, and when the power-on signal is received again, the dirty data are read from the preset storage unit and recovered to the memory cache.

The application provides a channel quality sensing-based adaptive modulation method and system for satellite-ground communication, and relates to the technical field of satellite-ground broadband communication.The method comprises the following steps: acquiring a set of link state parameters of a satellite-ground communication link in real time and performing normalization processing to generate a channel state feature vector; performing fusion evaluation on the channel state feature vector through a channel quality evaluation model to output a channel quality evaluation index; inputting the channel quality evaluation index into an adaptive modulation reconstruction model and judging a corresponding quality grade interval, and determining a modulation mode according to the quality grade interval; indexing modulation order parameters and channel coding rate parameters corresponding to the modulation mode in a modulation parameter configuration table, and generating a corresponding modulation switching instruction; and based on the modulation switching instruction, performing interleaving slice processing on to-be-downloaded remote sensing data to generate independent slice data and evenly distribute the independent slice data to baseband processing threads for parallel modulation and transmission, so that a dynamic balance among spectral efficiency, transmission rate and stability is achieved.

This application discloses a multi-vehicle positioning device for intelligent driving testing, relating to the technical field of intelligent driving testing. The device includes a fixed base station installed at the test site, and master vehicle positioning components and slave vehicle positioning components installed on master and slave test vehicles. The fixed base station receives satellite signals and provides position references for the test vehicles. The slave vehicle positioning components feed back slave vehicle position information to the master vehicle positioning components, and the master vehicle positioning components feed back the master and slave vehicle position information to a host computer. Both master and slave vehicle positioning components are equipped with an automatic power switching module, which connects to a main power supply and a backup power supply. This module automatically switches to the backup power supply when the main power supply fails, ensuring stable power supply. The technical solution in this application can automatically switch power during testing, avoiding data transmission interruptions caused by power outages, reducing testing risks and uncertainties, and meeting the requirement for continuous positioning during intelligent driving testing.

The invention relates to the field of boiler systems, and discloses a temperature adjusting system for a last-stage reheater of a boiler, which is used for improving the operation safety and reliability of the last-stage reheater of the boiler. Comprising the steps of collecting real-time temperature data of key parts of a boiler by connecting a power plant SIS or DCS system, and additionally installing a thermocouple enhancement data set to generate a temperature data set containing spatial position information. And calculating to obtain the three-dimensional temperature field distribution of the pipeline by using a model considering the dynamic change of the oxide skin. And based on the distribution, monitoring overtemperature points in real time, and generating temperature state evaluation and overtemperature early warning information. According to the invention, an equipment life prediction model is established, the damage accumulation degree of the pipeline material is evaluated, the residual life is predicted, a preventive maintenance strategy is made, and a maintenance plan suggestion is generated and integrated to a power plant maintenance plan system to guide equipment maintenance management.

The utility model relates to the field of power electronics, especially low voltage crossing device, it includes voltage monitoring unit, compensation voltage generating system and overhauling isolation device. In the utility model, the device is in series between power supply and protected load, carries out real -time power grid voltage monitoring through bridge circuit, and carries out difference calculation, and the required compensation voltage is accurately generated on this basis, once finds that power supply voltage deviates from rated voltage level, generates a suitable compensation voltage injection system through energy storage device and IGBT inverter system, and the purpose of this compensation voltage is to offset the drop of power grid voltage, thereby realizes the effective management of voltage sag, guarantees load side voltage stability, ensures that sensitive load still can be unaffectedly operated when power grid voltage is abnormal.

The application discloses a kind of unmanned plane nest integrated charging and communication switching control method and device, comprising: when being in charging state and detecting data to be transmitted, initiate data exchange request with unmanned plane, and carry out the data exchange request check, obtain check detection result;According to check result, control duplex communication module to enter invalid level, and maintain predetermined time;After maintaining invalid level in predetermined time, the duplex communication module is switched to low level state, and after the confirmation signal of the unmanned plane is sent, it is switched to data transmission state, and data transmission is started;Wherein, the synchronization message is used to align state with unmanned plane after mode switching.The application compared with prior art, significantly improve the switching reliability of unmanned plane nest charging and communication mode and data transmission efficiency, overcome the poor technical defects of traditional scheme cooperation.

A method for fault cross-system propagation analysis based on performance model, the first step: multi-domain system performance model construction; based on Modelica, the construction, integration and verification of each domain system model are completed; the second step: fault mode and influence analysis; the typical fault mode of components in each domain system and the fault influence relationship between components are identified, and the fault propagation path is determined; the third step: fault propagation analysis based on directed graph; the edge betweenness of each directed edge is calculated and taken as the fault propagation characteristic parameter on the structure level; the fourth step: fault cross-system propagation analysis based on performance model; based on the function failure logic table, the performance influence simulation between multi-domain components is carried out, the performance influence degree of the fault source component on the affected component is analyzed, and the performance characteristic parameter describing the components between each domain is obtained; the fifth step: fault cross-system propagation strength evaluation; the fault propagation structure characteristic parameter and the performance characteristic parameter are normalized and fused, a fault cross-system propagation strength model is constructed, and the key propagation path is identified.

The present disclosure provides an audio data processing method, system, electronic device and program product. The audio data processing method of the present disclosure is applied to a second device, comprising: establishing a first connection with a first device; receiving audio data sent by the first device according to the first connection, the audio data being collected by the first device for environmental sound or conversation sound; storing the audio data to a local storage space; and sending the stored audio data to a network side for storage.

The utility model relates to the technical field of power supplies, and discloses a self-locking power supply control circuit based on a self-resetting switch, which is connected with an equipment master controller and is used for controlling the on-off between a power supply input end and a power supply output end, and the equipment master controller is connected with the power supply output end and is used for accessing an input signal and generating an output signal. The self-locking power supply control circuit comprises a first MOS switch which is connected between a power supply input end and a power supply output end and is used for outputting an input signal, an NPN switch which is connected with the first MOS switch, the power supply input end, the power supply output end and an equipment master controller so as to access an output signal, and a self-resetting switch which is connected with the power supply output end, the equipment master controller and the first MOS switch. The second MOS switch and the first MOS switch are connected in parallel between the power supply input end and the power supply output end and are connected with the NPN switch; and the third MOS switch is connected with the power supply input end and the NPN switch.

The utility model provides a kind of winding mechanism and label printer of printable label, belong to label production technical field.It solves the problem that printable label cannot effectively separate from spool when the existing winding mechanism of printable label unwinds.The winding mechanism of the present application, including spool, the compacting structure for compacting the tail end of printable label is arranged on spool, the tail end of printable label enters the gap between compacting structure and spool in initial state, the tail end of printable label is compacted by compacting structure actively or under the action of printable label covered on compacting structure during winding, printable label drags spool to rotate reversely during unwinding, so that printable label is gradually released, and compacting structure can completely release the tail end of printable label when it is released to the tail end of printable label.By mechanical compacting, the risk of abnormal bonding caused by environmental factors is eliminated, and the tail end of label can be reliably separated during unwinding;Reduce equipment maintenance cost and consumable loss, improve printing efficiency.

The invention provides a file merging method and device, equipment, a storage medium and a program product, and particularly relates to the technical field of data processing. The method comprises the steps that small files, stored in a distributed storage system, of a target data table are recognized, and format information of all the small files is recorded; according to the recorded format information, combining the small files through a distributed computing framework to generate a plurality of aggregation files; and writing the aggregation file into the temporary storage directory, and migrating the aggregation file to a formal storage directory of the target data table after the aggregation file passes the integrity verification. The method is used for achieving the effects that efficient small file merging is achieved, and meanwhile continuous access of streaming data is supported.

The invention provides a data sensing device of a vehicle, and belongs to the technical field of data processing of vehicles. According to the application, the same data transmission interface is configured for the image acquisition module, the environment data acquisition module and the controller, and the unified preset data transmission protocol is set, so that the hardware adaptation difficulty and the device structure complexity can be reduced. Furthermore, after the image acquisition module acquires the visual data and the environment data acquisition module acquires the spatial state data of the object, the visual data and the spatial state data can be directly transmitted to the controller according to a preset data transmission protocol through a uniform interface of the system. Because the two types of data adopt the same transmission standard, a controller does not need to carry out multi-protocol conversion, and the real-time performance and the stability of data transmission are improved. According to the scheme, interfaces and protocols of different data acquisition units or modules can be unified, the problems of analysis delay and data packet loss caused by protocol conversion are avoided, and potential safety hazards in the vehicle driving process are reduced.

The invention provides a pulse signal frequency adaptive acquisition method and system based on a KDE algorithm, and the method comprises the steps: carrying out the isolation protection and voltage conversion of an external pulse signal, and obtaining a TTL level signal; tTL (transistor-transistor logic) level signals are accessed to a GPIO (general purpose input / output) pin with a timer multiplexing function of the MCU module for pulse counting; entering a timer interrupt function after a pulse rising edge of a TTL level signal is triggered, capturing a current timer capturing register value of two continuous rising edges, calculating a difference value, performing conversion in combination with a timer set frequency to complete primary frequency measurement, and storing frequency data into a global variable array; processing the acquired frequency data through a KDE algorithm to obtain frequency distribution of the current pulse input signal; and determining a sampling frequency and a frequency threshold by using a peak index fast search algorithm, and performing signal capture according to the sampling frequency. Through the KDE algorithm, the frequency of the input pulse signal is adaptively acquired, and the interference of the high-frequency signal is inhibited.

The utility model discloses an anti-misplug positioning column communication connector comprising a connecting seat, one end of the connecting seat is plugged with a connecting head, the connecting head is fixedly connected with a semicircular positioning column, the upper part of the connecting head is fixedly connected with an anti-misplug block, the connecting seat is provided with a flanging part, and the flanging part is fixedly connected with the semicircular positioning column. A mistake-proofing slot is formed in the flanging part, a socket panel is fixedly connected to the connecting seat, and a semicircular positioning hole is formed in the socket panel. By introducing the design that the semicircular positioning columns are accurately matched with the semicircular positioning holes in the connecting seat, the risk of misplug is greatly reduced, in addition, the misplug-proof block is combined with the misplug-proof slot formed in the flanging part, the misplug-proof capability of the connector is further enhanced, and the misplug-proof capability of the connector is improved even under the condition of insufficient light or limited operation space. And correct plugging can also be ensured.

The invention discloses a storage device management method based on fault prediction and automatic recovery, which dynamically calculates health scores of storage modules and automatically switches the modules into a normal mode, a degradation mode and an isolation mode according to the scores. When the module enters the degradation mode, the controller divides the data into a plurality of data segments which can be independently moved, the data segments are sequentially migrated to the healthy module according to the risk sequence, and the local logic mapping table is updated in real time after each segment is migrated. In the migration process, the controller evaluates a health score in real time, and if the score rises to a preset threshold, the residual data segment migration and new data writing rate is adjusted until the module is recovered to a normal mode; if the health score is continuously lower than the threshold, the module is permanently switched to an isolation mode, writing is forbidden, and data logic is mapped to other health modules. By means of the method, active protection and automatic recovery of SSD data security can be achieved, the reliability of a storage system is improved, and the service life of the storage system is prolonged.