283 results about "Bus mastering" patented technology

The invention provides a data synchronization method which can be applied to the technical field of computer communication. The data synchronization method comprises the steps that a synchronization request initiated by a local server is responded, a virtual disk mirror image generated by converting a target file through the local server is received through a preset transmission channel, and the synchronization request carries an editing mode identifier of the target file; mounting the virtual disk mirror image to a serial bus control port of a remote server, so that the virtual disk mirror image can be identified as a removable storage device; if the editing mode identifier represents that the target file is in an editable state, acquiring change information generated by modifying the target file by a local server and / or a remote server by monitoring a file change event on the removable storage device in real time; and dynamically updating the virtual disk mirror image based on the change information to complete modification synchronization of the target file. The invention further provides a mirror image mounting method and device and a storage medium.

The invention discloses a shared cache system applied to a real-time network terminal chip. The shared cache system comprises queue management, enqueue scheduling control, dequeue scheduling control, write bus control, read bus control, a data cache, a register module, an RXFIFO module and a TXFIFO module. According to the cache allocation strategy, the variable-length data is stored by using the fixed-length unit. The user can customize and configure the private space, the residual space is the shared space, and the storage utilization rate is high. The shared cache is mainly used for storing data packets sent by an external application layer through a host interface. And storing the received data packet, extracting frame information according to a network flow protocol, and directly discarding frames which do not meet the protocol. The shared cache is provided with a dynamic cache structure, the state of each queue can be updated in real time, frame loss is prevented, and the data stream processing capacity is improved. And meanwhile, complex hybrid scheduling of a real-time network is met. The whole shared cache is subjected to anti-radiation reinforcement, the scene requirement of space navigation application is met, and high reliability is achieved.

The invention discloses a concurrency control method and device, electronic equipment, a storage medium and a product. The method is applied to a concurrency control system comprising a processor and a bus controller, and comprises the steps that the processor responds to an atomic operation request of a target thread and sequentially sends a storage area switching instruction and a register operation instruction to the bus controller; the bus controller responds to the storage area switching instruction and the register operation instruction, executes storage area switching operation, generates a bus occupation maintaining signal and continuously executes register read-write operation in a target storage area; the processor sends a scheduling request to an operating system, so that the operating system improves the priority of the target thread to be a first priority; and the bus controller generates a bus release signal after the atomic operation of the target thread is finished. According to the scheme, through cooperation of the processor and the bus controller, atomized execution of thread Bank switching and register reading and writing is achieved, and the concurrency performance is improved while the reliability and consistency of data are ensured.

The invention discloses an anomaly detection method and device for a communication bus, the anomaly detection method and device are applied to a system-on-chip, the system-on-chip is integrated with a bus controller and a central processing unit running driving software, and the anomaly detection method comprises the steps that the bus controller monitors a clock line of the communication bus after the communication bus enters a data transmission state; under the condition that the duration of the low level of the clock line exceeds a preset duration, judging that the clock line is abnormal, and generating an interrupt signal; reporting the interrupt signal to a central processing unit; the driving software reads the state information of the bus controller through the central processing unit; analyzing the state information, and determining an expected state of the bus controller to the clock line; under the condition that the expected state is the low level, determining that the equipment causing the clock line abnormity is a bus controller; and under the condition that the expected state is the high level, determining that the equipment causing the clock line abnormity is the external equipment. Therefore, manual intervention can be reduced, and the problem solving efficiency and the system reliability are improved.

The invention provides an FPGA (Field Programmable Gate Array) implementation method for receiving and transmitting 16-path CAN (Controller Area Network) and 16-path serial port data. The FPGA implementation method comprises the following steps of: constructing a hardware architecture suitable for efficiently receiving and transmitting the 16-path CAN and 16-path serial port data by utilizing the characteristic of cooperative work of a processing system PS of XC7Z045FFG900-2 and a programmable logic PL; a CAN bus controller on the PL side is configured; configuring a serial port transceiver chip at a PL side; a ping-pong buffering function on a PL side is realized; establishing register mapping; and a double-AXI interface collaborative interaction mechanism of the PL side and the PS side is realized. The method has the beneficial effects that the ping-pong buffer technology and the parallel processing capability of the FPGA are adopted, so that efficient concurrent processing of 16-path CAN and 16-path serial port data is realized; through reasonable hardware design and register configuration, the stability of communication between the CAN bus and the serial port is ensured; based on the programmable characteristic of the FPGA, the system is flexibly configured and adjusted according to different application requirements; the advantages of an XC7Z045FFG900-2 hardware platform are fully exerted, and the resources of the PL side and the PS side are reasonably distributed and utilized.

The invention discloses an anti-interference system for a slip ring communication technology, and belongs to the technical field of communication. Aiming at the problems of electromagnetic interference, mechanical vibration and unstable contact of monocrystalline silicon furnace equipment, a collaborative solution is provided. The system comprises a conductive slip ring assembly, a dynamic shielding module, an asymmetric differential transmission module, an intelligent filtering module, an environment sensing module and a contact impedance compensation module, and real-time cooperative control is realized through a bus controller. The dynamic shielding module adopts a liquid metal micro-channel layer and a piezoelectric driving layer, the shielding density is dynamically reconstructed according to the electromagnetic interference frequency band and the vibration intensity, and broadband noise is suppressed; the asymmetric differential transmission eliminates common-mode interference through dynamic phase compensation; the intelligent filtering module adaptively adjusts parameters of a band elimination filter based on a deep learning model, and accurately suppresses time-varying interference; the carbon nanotube composite electric brush stabilizes contact impedance through a pressure feedback mechanism. The system is obviously superior to a traditional static shielding and fixed filtering scheme, and reliable communication requirements are guaranteed.

The invention relates to the technical field of servers, and discloses a conflict processing method and device. The method comprises the following steps: acquiring a state value of a first register from a bus state management chip under the condition that a first computing node determines that an access request needs to be sent to a bus arbitration chip; when the access request is a super control right access request and the state value of the first register is a second state value, a control request is sent to a bus state management chip, and the control request is used for requesting to use a bus super control right; and after the state value of the first register is updated to the first state value from the second state value and the state value of a second register corresponding to the first computing node is updated to the first state value, sending the access request to a bus arbitration chip. Therefore, effective management of the bus control authority is realized, and access conflicts are avoided.

An apparatus and a method for performing an authenticated encryption with associated data (AEAD) operation of an encrypted instruction and a golden tag stored in a memory device in an event of a cache miss are provided. The apparatus includes a bus control circuit, a block buffer, a tag buffer and an AEAD circuit. The bus control circuit receives a read address from a cache for reading the encrypted instruction and the golden tag from the memory device. The block buffer receives and stores the encrypted instruction from the bus control circuit, wherein a size of the block buffer is preset to be N times a size of one cache line. The tag buffer receives and stores the golden tag from the bus control circuit. The AEAD circuit performs the AEAD operation upon the encrypted instruction and the golden tag to check whether the encrypted instruction is tampered or not.

The invention relates to a single-machine obstacle avoidance method and system based on a millimeter wave radar and a camera, and the method comprises the steps: transmitting a frequency modulation continuous wave signal through the millimeter wave radar, collecting and preprocessing environment original data, and outputting a target list; based on the target list, when the target meets a preset signal-to-noise ratio condition and the speed exceeds a preset speed threshold value, triggering a camera to collect an image, performing real-time classification on the image through a lightweight convolutional neural network model, and outputting a classification result and a bounding box; performing space-time alignment on a target list and a classification result, dynamically allocating weights of radar data and visual data by adopting a confidence weighted fusion algorithm, associating the same target through distance calculation, and outputting a fused target attribute; based on the fused target attributes, constructing a three-dimensional decision matrix, and generating an obstacle avoidance strategy according to a preset priority rule; and converting the obstacle avoidance strategy into a bus control instruction, and controlling the vehicle to execute a corresponding alarm or brake response action.

The invention belongs to the technical field of new energy power, and particularly relates to an unmanned aerial vehicle hydrogen fuel cell hybrid power system and a control method thereof. The system comprises a fuel cell stack which is used for providing a reference power supply and has adjustable power output; the super capacitor bank is used for outputting peak current when transient high power is needed, and has the characteristics of high power density and quick response; the lithium iron phosphate battery pack is used for providing an emergency power supply when the fuel cell fails; the dynamic bus controller integrates the voltage hysteresis comparator and the CAN bus communication module and is used for controlling energy output of the fuel cell stack, the super capacitor bank and the lithium iron phosphate battery pack; the LSTM neural network prediction module is used for predicting a future power demand according to the flight attitude, the meteorological data and a historical load curve and triggering power climbing of the fuel cell in advance; and the Buck-Boost circuit is used for the fuel cell to directly charge the super capacitor bank, so that the dynamic response speed and the system stability of the unmanned aerial vehicle in a violent maneuvering state are remarkably improved.

The embodiment of the invention provides an equipment management method, device and system based on a bus technology, a bus controller does not need to initiate, bus equipment can actively send own equipment information to the bus controller after being powered on, and the bus controller sends the equipment information of the bus equipment to the bus controller after receiving the equipment information of the bus equipment. The address space of the bus is allocated to the bus equipment according to the equipment information of the bus equipment, so that the time delay of finding the bus equipment by the bus controller is reduced, and the efficiency of managing a bus network by the bus controller is improved.

Provided in the present disclosure is a connector port multiplexing apparatus, comprising: a latch reset circuit, which is electrically connected to a first voltage source and a power terminal of a universal serial bus connector, and is configured to output a control signal on the basis of a first voltage that is output by the first voltage source and a second voltage from the universal serial bus connector; and an analog switch circuit, a control terminal of which is electrically connected to an output terminal of the latch reset circuit, a first terminal of which is electrically connected to a first signal transmission terminal of a universal serial bus controller, a second terminal of which is electrically connected to a second signal transmission terminal of the universal serial bus controller, and a third terminal of which is electrically connected to a multiplexing signal transmission terminal of the universal serial bus connector, wherein the analog switch circuit is configured to establish, on the basis of the control signal, a connection path between the first terminal and the third terminal of the analog switch circuit or a connection path between the second terminal and the third terminal of the analog switch circuit.

The invention discloses a communication link automatic selection and concurrent transmission method under a helicopter limit condition, and relates to the technical field of aerospace. Comprising the following steps: firstly combing airborne communication link information, retaining four types of links including a satellite, an ultra-short wave, a short wave and a data transfer radio, and collecting parameters by means of a bus controller; filtering the data by using a Kalman filtering algorithm, and removing abnormal data through threshold verification; and finally outputting stabilized data. Determining a task scene and an environment scene based on the stabilization data in combination with airborne control screen task selection and environment sensor data; according to the technical key points, a fault precursor monitoring technology is adopted, a standby link pre-activation technology is combined, a seamless switching mechanism is matched, the defect that an existing system depends on manual switching is overcome, the automatic switching time of the link is shortened to be within 0.5 second, the communication interruption rate under the limiting condition is reduced to be lower than 5% from 30% or above, the real-time communication requirements of rescue, patrol and the like are met, and the real-time communication efficiency is improved. Good use prospects are realized.

The invention discloses a communication conflict detection control method and device, equipment and a storage medium. The method comprises the following steps: controlling a bus slave station module to send a request signal containing a unique feature identifier to a bus; the control bus master station module monitors the bus in real time; controlling the bus master station module to identify the bus slave station modules participating in the conflict; controlling the bus master station module to distribute different sending time slots for the identified conflicting bus slave station modules; the control bus master station module broadcasts a control frame comprising a conflict slave station module list and a corresponding sending time slot; controlling each conflict slave station module to perform local clock synchronization according to the distributed sending time slot after receiving the control frame; controlling each conflict slave station module to send data to the bus in the synchronized sending time slot; and the control bus master station module enters the next round of monitoring period after each conflict slave station module completes data transmission. According to the invention, accurate positioning and identification of bus communication conflicts can be realized, communication resource allocation is optimized, and communication efficiency is improved.

The invention belongs to the technical field of vehicle control, and discloses a networked automobile CAN bus control method and system, and the method comprises the steps: analyzing multi-source data of a networked automobile, constructing a multi-level control architecture based on an analysis result, setting a condition threshold value between control levels, and employing a genetic algorithm to dynamically optimize the condition threshold value as a control threshold value; constructing a threshold prediction model by using a time sequence prediction algorithm, predicting the state and operation scene change of an electronic control unit in the networked automobile by combining the obtained historical multi-source data, and generating a control prediction threshold; and in combination with the control threshold value and the control prediction threshold value, generating a cooperative control value through a cooperative recommendation strategy, and formulating a corresponding control strategy. According to the invention, a multi-level control architecture is constructed through multi-source data analysis, a communication threshold is dynamically optimized in combination with a genetic algorithm, the CAN bus load is reduced, the communication efficiency and real-time performance are improved, key message delay is avoided, and the stability and resource utilization capability of a vehicle-mounted network are enhanced.

This invention relates to the field of vehicular network testing technology, and discloses a domain controller network testing system, method, and apparatus. The system includes multiple vehicular Ethernet converters, Ethernet switches, and bus controllers. Each vehicular Ethernet converter is connected to a domain controller under test, and each vehicular Ethernet converter is also connected to the Ethernet switch. Each domain controller under test is also connected to the bus controller. The Ethernet switch and the bus controller are both connected to a host computer. The host computer is configured to: receive on / off configurations for the channels between the Ethernet switch and at least one of the domain controllers; receive test requests and send test signals to the bus controller; and acquire messages transmitted and received at a specified bus listening port or mirror port to obtain test results. This invention enables arbitrary channel configuration between domain controllers, meeting various testing requirements.

The present invention discloses a data conversion circuit and method between an external bus and an OSP bus, wherein the data conversion circuit comprises: an MCU-side conversion module and a node-side conversion module; wherein the MCU-side conversion module comprises: a processor module, an on-chip bus, an external bus controller and a first OSP controller; the node-side conversion module comprises: a UART controller, a protocol conversion module and a second OSP controller; the processor module is connected to the external bus controller and the first OSP controller via the on-chip bus, the processor module reads data in the external bus controller and the first OSP controller via the on-chip bus, and realizes conversion between the external bus and the OSP protocol after data processing; the present invention can realize data conversion and transmission between the external bus and the OSP bus by providing the first OSP controller with only one group of OSP ports.

A semiconductor device includes a bus control circuit that controls access to a slave shared by a plurality of masters. The bus control circuit includes a plurality of priority determination circuits corresponding to the plurality of masters. The priority determination circuit is configured to, when receiving an urgent access from a corresponding master, change a priority level signal included in an access request from the corresponding master to allocate a high priority level for emergency and allocate a low priority level to a master other than the corresponding master.

This application discloses a method and apparatus for detecting anomalies in a communication bus, applied to a system-on-a-chip (SoC). The SoC integrates a bus controller and a central processing unit (CPU) running driver software. The method includes: after the communication bus enters a data transmission state, the bus controller monitors the clock line of the communication bus; if the clock line remains low for a preset duration, it determines that the clock line is abnormal and generates an interrupt signal; the interrupt signal is reported to the CPU; the driver software reads the status information of the bus controller through the CPU; analyzes the status information to determine the desired state of the clock line for the bus controller; if the desired state is low, the device causing the clock line abnormality is identified as the bus controller; if the desired state is high, the device causing the clock line abnormality is identified as an external device. This reduces manual intervention, improves problem-solving efficiency, and enhances system reliability.

The invention discloses an I2C bus control chip and an I2C bus control method, and the I2C bus control chip comprises a control processor which is connected with a main device, and the main device is connected with the control processor through a clock signal line and a data signal line; each control circuit is connected with the corresponding master device and slave device, and the control end of each control circuit is connected with the control processor; wherein the slave device and each master device are respectively connected with the I2C bus control chip through a clock signal line and a data signal line of the I2C bus, the control processor accesses the corresponding master device to the I2C bus through the control circuit according to a switching instruction, and the switching instruction is composed of a specific clock signal and a specific data signal. It can be ensured that only the single master device is allowed to establish effective connection with the slave device at any time, and the problem of bus competition is solved.

The invention relates to a wireless jacquard warp knitting integrated control method and integrated control system based on double buses, and the method comprises the steps: importing a process file into an application interface, adjusting the analyzed process data to meet a preset rule, assembling data protocols of different movement mechanisms, carrying out the step-by-step matching, and outputting the data protocols to a controller of a warp knitting machine. The jacquard mechanism is driven in a dual-bus control mode; different movement mechanisms are controlled to complete actions; an application interface of an upper computer of the system is provided with a process file extraction assembly, a process file encoding and decoding unit analyzes a process file and encodes process data, an interface unit calls a motion mechanism, and the application interface displays and adjusts an analysis result of the process file through an editable tag card; the jacquard mechanism is controlled by double buses, and other movement mechanisms are controlled by buses. According to the invention, the analysis of overall process data is realized, the process development flexibility is improved, the richness of jacquard products is expanded, the stability of a jacquard mechanism is improved, the machine speed is improved, and the failure rate is reduced; and the threading efficiency of the warp knitting equipment is improved.

The invention relates to the technical field of dust explosion prevention in the textile industry, in particular to a dust explosion prevention method and system in the textile industry and a storage medium. The explosion-proof method comprises the steps that a bus communication architecture based on a two-wire system power line carrier is constructed, a multi-host communication mode adopting a private protocol is established between a controller and a plurality of detection probes, and a message structure of the private protocol comprises a function code field, a number field, a data field and a CRC verification field, wherein the function code field definition comprises 01H alarm coding, 02H parameter modification coding and 03H heartbeat request coding. According to the invention, a multi-host communication architecture based on a private protocol is constructed, dynamic distribution of bus control right and dust flow feature detection are deeply coupled, and a zero-latency master-slave switching mechanism when an alarm event is triggered is realized.

The invention relates to the technical field of automobile electronic testing, in particular to a script-based vehicle-mounted radio frequency receiving module automatic testing method. The method comprises the following steps: constructing a test execution environment configuration structure by integrating an equipment list, physical connection information and historical test records; performing test case parameter extraction, multi-channel operation time sequence arrangement and mapping of RS232 and CAN bus control commands to generate a configuration structure capable of driving script execution; binding a high-frequency test scene and a control channel, expanding a specific instruction sequence, controlling the triggering of a power supply and a radio frequency signal, and completing the collection of test response data; and performing timestamp alignment, protocol analysis and statistical comparison on the response data, generating a test report and updating a test case execution record. According to the method, whole-process automation of test environment modeling, script driving configuration, test execution and result analysis is achieved, the test efficiency and reliability are remarkably improved, and good reusability is achieved.

The application relates to the field of motion control, in particular to an intelligent slave station based on a dispensing application and a control method, which converts parameter information obtained from an internal bus control module into trigger signals corresponding to glue valves, cameras and needle valves in a dispensing system through a position comparison module, accurately controls the timing of glue opening through dispensing control of the glue valves, photographing timing of the cameras and needle valve needle matching, realizes accurate control of the glue valves, realizes different glue covering effects through control of the motion speed of the glue valves and the spraying frequency of the glue valves, and realizes position point number setting through setting of a data buffer FIFO, removes position data after comparison and trigger output from the data buffer FIFO, leaves space for subsequent position data, and realizes efficiency improvement and position point number setting increase.

Systems, methods, and apparatuses for industrial equipment diagnostics are disclosed. Specifically, a bus controller operatively connected to a processor is physically connected to two or more controller area network (CAN) buses, wherein each CAN bus operates according to a different protocol. The bus controller is configured to control the rate at which messages are received on certain buses by adjusting parameters such as a baud rate and sample rate. The bus controller is further configured to filter or mask certain CAN bus messages based on identifiers within the messages. The bus controller is operatively connected to a remote processing system for processing the CAN bus messages from their raw data format into a useable format. The remote processing system performs diagnostic analysis on the processed CAN bus messages, and furthermore performs predictive analytics on the processed CAN bus messages to identify patterns or discrete events indicative of future system failures.

The invention discloses a 1553B bus test system, a test method and an aviation maintenance system, and belongs to the technical field of network communication, the test system is in communication connection with a plurality of remote terminals and comprises a bus control end and a user-defined bus function, and the user-defined bus function is obtained through secondary packaging development based on an original bus function; wherein when the BC2RT function is started, the bus control end sends first test data to the remote terminal, and receives feedback information of the remote terminal to verify a data transmission function from the bus control end to the remote terminal; and when the RT2BC function is started, the bus control end sends a receiving instruction, receives second test data transmitted by the remote terminal, and verifies a data transmission function from the remote terminal to the bus control end according to the second test data. The self-defined bus function is developed through secondary packaging, the data interaction test of the bus control end and the remote terminal is realized, the test process and parameter configuration are simplified, and the test complexity is reduced.

Provided in the embodiments of the present application are a bus circuit for two master devices, and a bus control method and apparatus for two master devices. The bus circuit comprises a first master device, a first bus buffer, a second master device, a second bus buffer, an input / output expander, a watchdog, a NOT gate and a bus control chip, wherein the first master device is connected to the first bus buffer by means of an integrated circuit bus, and the first bus buffer is connected to the bus control chip by means of the integrated circuit bus; the second master device is connected to the second bus buffer by means of the integrated circuit bus, and the second master device is further connected to the input / output expander by means of the integrated circuit bus; the input / output expander is further connected to the first master device, and the input / output expander is further connected to the watchdog; the watchdog is further connected to the NOT gate; the NOT gate is further connected to the first bus buffer; and the watchdog is further connected to the second bus buffer. By means of the present application, the conflict problem in the related art of two master devices competing for bus control rights is solved.

1. The name of this design product: bus controller. 2. Purpose of this design product: used as a bus controller. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The invention provides a universal bus control system and method, and the system comprises a user interface which is used for transmitting an initialization configuration signal, receiving an initialization configuration completion signal, and transmitting and receiving data; the bus main system is connected with the user interface and is used for completing configuration according to the initial configuration signal, so that the bus main system meets a communication protocol corresponding to the interface type of the target interface; the N level transceivers are connected with the bus main system; the level transceiver connected with the target interface is used for completing configuration according to the initialization configuration signal, so that the level transceiver meets a communication protocol and a level type corresponding to the interface type of the target interface; and under the condition that the bus main system and the N level transceivers finish configuration according to the initialization configuration signal, the user interface realizes data transceiving with the M target interfaces through the bus main system and the N level transceivers. According to the invention, multiple types of communication protocols and interfaces can be realized at the same time or in a time-sharing manner under one set of bus system.

This invention relates to the field of EtherCAT bus control, and more particularly to a multi-axis compliant interpolation synchronization method based on EtherCAT. This invention calculates the maximum distribution quantity d. max The maximum distribution L during the increasing phase of the distribution is below. ac The maximum distribution L during the decreasing phase of the distribution de According to L ac +L de With l rem The invention determines the starting segment number N0, ending segment number N1, ending segment number N2, and total interpolation segment number N3 based on the magnitude of the distribution increase. It then calculates the required main axis distribution for the first N interpolation cycles and uses this calculated main axis distribution to calculate the slave axis distribution. This invention improves the speed smoothness of the cutting machine, reduces interpolation cycles while maintaining cutting accuracy, increases operating speed during intermediate interpolation cycles, and does not affect the vibration caused by corner speed changes at the transition points.