47 results about "Bus" patented technology

Persistent Memory, byte-addressable non-volatile memory technologies, offer performance advantages and access similar to Dynamic Random Access Memory while having the persistence of disk. Hardware Transactional Memory support, originally designed for DRAM concurrency control, can corrupt persistent memory transactions due to cache evictions before system failure. Unifying storage and memory on the main-memory bus and accessed directly while using HTM for concurrency control has previously required the additional burden of changes to processors to prevent possible data corruption.

The present invention provides a solution for the durability of transactions to persistent memory while using HTM as a concurrency control mechanism, without any changes to processors or cache-coherency mechanisms. The invention includes a software only method and system that provides durability and ordering of HTM transactions to persistent memory. The invention also discloses a back-end memory controller that supports HTM transactions for durability to persistent memory without up-front processor changes.

The invention relates to a fuel cell power system monitoring technology. The invention particularly relates to a fuel cell power system platform upper computer monitoring method based on a CAN bus. Anupper computer is connected to a fuel cell controller, a DC/DC and a CAN network of an adjustable load through a CAN bus. A parallel processing multi-thread structure is adopted to receive messagesof the DC/DC, the adjustable load and the fuel cell controller, and display real-time data and curves and stores data of parameters and states of the DC/DC, the adjustable load and a fuel cell engine.The messages are sent to the fuel cell controller and the adjustable load by operating function buttons on an interface of the upper computer and setting control target values of related components,and then manual control, automatic control and forced manual control are conducted on the fuel cell power system platform. According to the method, state monitoring and energy control strategy debugging of the fuel cell power system platform are facilitated, the anti-interference capability is high, and the control performance is stable.

The invention discloses a finished car control model simulation method which can be used for reducing the establishment time of a simulation environment, improving the efficiency and simulating input signals including digital quantity, simulation quantity, a PMW signal and a CAN (controller area network) bus signal. The method comprises the following steps of (1) inputting the analog quantity, the digital quantity and the PWM input signal needed by a finished car control model through a signal builder, a MAT file or an Excel file of the Matlab (matrix laboratory); (2) storing and observing the analog quantity, the digital quantity and the PWM signal in a feedback signal through a scope, display or a MAT file; (3) exchanging an input/output signal of the CAN bus of the finished car control model with the Matlab via CANoe through a vector CANoe tool box.

The invention discloses a vehicle speed monitoring method, system and device, and a storage medium. The method comprises the following steps: acquiring license plate information of a vehicle, and uploading the license plate information to an upper computer system; determining an identity code of the vehicle according to the license plate information; and inquiring vehicle speed data of the vehicle in a CAN bus according to the identity code. The vehicle speed data is obtained through the following steps that bus data of a vehicle are collected through a data acquisition terminal; the data acquisition terminal is arranged on the vehicle; and the bus data and the identity code of the vehicle are forwarded to a CAN bus through the data acquisition terminal, and the bus data is analyzed through the CAN bus to obtain vehicle speed data of the vehicle. According to the vehicle speed monitoring method, the vehicle speed monitoring precision of the vehicle can be effectively improved, the vehicle speed monitoring accuracy is improved, and the human cost of vehicle monitoring can be reduced. The method, the system and the device can be widely applied to the technical field of vehicle monitoring.

The invention discloses a rechargeable-type USB (Universal Serial Bus) auxiliary power-supplying device, which comprises a shell part, a USB-interface state-detecting part and a control-circuit part, wherein the shell part comprises a shell, a female USB interface, a male USB interface, an upper cover plate and a lower cover plate; the USB-interface state-detecting part comprises a slide block, a reset spring, a stop block, a miniature travel switch and a baseplate; the control-circuit part comprises a charging circuit and a boosted circuit. The device has the advantages of no need of an external power supply, small and exquisite size and no occupation of excessive desktop space; when the quantity of user USB ports is limited, a host computer is farther from a power-supply socket, power-supply jacks are insufficient, and a double-ended USB connecting wire is not provided by mobile equipment, only the auxiliary power-supplying device needs to be connected, so that high-power USB mobile equipment can be conveniently used.

The invention relates to the field of avionics system time synchronization methods, in particular to an avionics integrated test time synchronization system based on a satellite simulator and a synchronization method thereof.The system comprises a multi-system satellite navigation simulator, a satellite navigation antenna, an anti-interference processor, a comprehensive task processor and testing and excitation/simulation equipment; the method comprises the following specific steps: S1, a time frequency module of the multi-system satellite navigation simulator receives external clock input; s2, outputting a 1PPS (pulse per second) signal; s3, the anti-interference processor transmits the time signal to a comprehensive task processor in a second pulse signal or high-speed RS-422 data form; s4, the comprehensive task processor transmits the time signal to the airborne avionics equipment through the FC optical fiber bus and the GJB289A bus; time synchronization between avionics system products, between joint test environment devices and between products and devices is achieved, and timeliness of information interaction and software scheduling and synchronism of data recording are effectively guaranteed.

The invention discloses an efficient insulation electric leakage detection circuit and an insulation electric leakage detection method. The efficient insulation electric leakage detection circuit comprises a high-voltage bus which comprises a positive bus and a negative bus, a battery pack which is connected with one side between the positive bus and the negative bus, a load which is connected with the other side between the positive bus and the negative bus, and an insulation resistor which comprises an inherent insulation resistor Rp1 between the positive bus on the end of the battery pack and the shell ground, an intrinsic insulation resistor Rn1 arranged between the negative bus on the end of the battery pack and the shell ground, an intrinsic insulation resistor Rp2 arranged between the positive bus on the end of the load and the shell ground, and an intrinsic insulation resistor Rn2 arranged between the total negative bus on the end of the load and the shell ground.

The invention provides a CAN (Controller Area Network) bus communication control system and a communication system, the communication system is based on an SoC (System on Chip) framework consisting ofan MCU (Microprogrammed Control Unit) kernel and an FPGA (Field Programmable Gate Array) kernel which are integrated in the same system on chip, and a CAN bus controller module, an MCU bus mapping module and a CAN bus interrupt signal mapping module are arranged on the basis of logic resources in the FPGA kernel; the CAN bus between the MCU and the off-chip external CAN equipment is integrated inthe chip, the number of the CAN buses can be dynamically configured, and priority classification control of the MCU kernel on each CAN bus controller module is realized, so that the expansibility andusability of the MCU are improved, the design and application complexity of mounting the external CAN equipment by the MCU is reduced, a user can quickly apply the CAN buses, the dependence of the CAN bus priority on the CAN equipment node is reduced, and the controllability of the MCU on the CAN equipment node priority is enhanced. The invention also provides a method for dynamically configuringthe priority of each equipment node of the CAN bus.

Systems and methods for data acquisition utilizing spare or unused databus capacity are provided. In one example aspect, the system includes a vehicle that includes an engine and a controller. The controller generates a data file indicative of Continuous Engine Operation Data (CEOD). The data file is transmitted over a serial databus to a bus recorder. Particularly, the data file is continuously generated by the controller and stored in a buffer. The available bandwidth of a transmission frame for the serial databus is determined. A portion of the data file is retrieved from the buffer based at least in part on the determined bandwidth. The portion of the data file is divided into relatively small transmission payloads and packed into the available bandwidth of the transmission frame. This process is repeated on a continuous basis and the bus recorder records the data. The data file is then reconstituted and decoded.

The invention belongs to the technical field of computers, and particularly relates to a key generation method and device, a computer readable storage medium and terminal equipment. The method is applied to a first node in a preset controller local area network, the first node is any node in the controller local area network, and the method comprises the following steps: generating a first bit sequence; sending the first bit sequence in a bus of the controller area network; receiving a superimposed bit sequence in a bus of the controller area network, wherein the superposed bit sequence is a bit sequence formed by superposing the first bit sequence and the second bit sequence, the second bit sequence is a bit sequence generated by a second node, the length of the second bit sequence is equal to that of the second bit sequence, and the second bit sequence and the first bit sequence are sent in a bus of the controller local area network at the same time; and generating a key according tothe superposed bit sequence.

The invention relates to a system for measuring millisecond return response time of a CAN bus product, and belongs to the field of industrial control design. The system comprises a to-be-tested product, a calculation conversion module, a test module, a first timing module, a second timing module, a return analysis module and a response time calculation module. The method is specially used for solving the problem of CAN bus products, and is applied to measure the situation that various tested devices give a return response in millisecond time. The reaction time of the tested equipment is obtained by judging the time difference between the first moment and the second moment, and the unit is 0.1 millisecond; the method provided by the invention is relatively accurate, and meets the requirement of applying the CAN bus product to test and measure the return response time of the tested equipment of which the millisecond level is less than or equal to millisecond level.

The invention relates to the technical field of application of near-panoramic digital images, in particular to a close-range image traffic violation and road condition photogrammetry system based on Wifi signals, which comprises an automobile, a base station and an automobile administration office, the base station is laid at a position with more traffic flows, and a data bus for transmitting bigdata is laid between the base station and the automobile administration office, the vehicle administration office is built in each city, a vehicle-mounted wifi router is installed on the vehicle, multiple adjustable transmitting antennas are movably arranged on the outer walls of the four corners of the top of the vehicle-mounted wifi router, and a data line interface is formed in the outer wall of one side of the vehicle-mounted wifi router. The beneficial effects of the invention are that the system achieves the real-time detection of the automobile through the panoramic look-around system of the automobile, transmits the data obtained through the central computer database and the data obtained through the control center to the base station at the same time, determines a violation detection result through comparison, is more accurate, and brings convenience to related workers and drivers.

The invention discloses a low-current grounding fault positioning method and a related device. The method comprises the following steps: dividing a fault line into a fault trunk line and a fault branch line according to a current fault point; respectively acquiring first half-wave absolute values of transient zero-sequence voltages of an upstream section and a downstream section of the current fault point based on the fault trunk line and the fault branch line; performing function fitting operation according to the absolute value of the first half wave of the transient zero-sequence voltage and the bus electrical distance to obtain two transient zero-sequence voltage distribution functions; solving the bus electrical distance by combining two transient zero-sequence voltage distribution functions; and determining the position of the fault point on the fault line according to the bus electrical distance. The applicatino can solve the technical problems that the application of the fault detection technology is limited and the result reliability is affected due to the fact that the requirements for the sampling rate and the line parameters are high in the prior arts.

The invention discloses a digital quantity acquisition and communication transmission system. The system comprises a first digital quantity acquisition and communication transmission subsystem and a second digital quantity acquisition and communication transmission subsystem which are arranged in parallel, wherein the first digital quantity acquisition and communication transmission subsystem is used for comparing the sampled data in the first digital quantity acquisition and communication transmission subsystem to obtain a first result whether the data is consistent or not; the second digitalquantity acquisition and communication transmission subsystem is used for comparing the sampled data in the second digital quantity acquisition and communication transmission subsystem to obtain a second result whether the data is consistent or not; and the first digital quantity acquisition and communication transmission subsystem is used for transmitting the data sampled by the first digital quantity acquisition and communication transmission subsystem through the communication bus under the condition that the first result shows that the data is consistent. According to the digital quantityacquisition and communication transmission system provided by the embodiment of the invention, the security (correctness) and the reliability (availability) can be ensured.

The invention discloses a low-noise anti-eddy current bus bridge which comprises a bus bridge body and a plurality of fixing beams arranged in the bus bridge body. The bus bridge body is made of aluminum-coated zinc plates, and the fixing beams are made of stainless steel. Aiming at the technical problem that a fixed beam of an existing bus bridge is easy to generate heat due to eddy current, the invention provides the low-noise anti-eddy current bus bridge which adopts stainless steel made of a non-magnetic material as the fixed beam, so that the problem of heat generation due to eddy current can be reduced.

A system LSI includes: a first group including a first CPU and a first module; a second group including a second CPU and a second module having the same configuration as the first module has; and a shared memory including a first area for which cache coherency is maintained by an access from the first group, and a second area for which cache coherency is maintained by an access from the second group, the shared memory electrically connected to the first group and the second group. The first group includes a first bus through which cache coherency is maintained between the first CPU and the first module, and a second bus which electrically connects the first bus and the first module to each other. The second group includes a third bus through which cache coherency is maintained between thesecond CPU and the second module, and a fourth bus which electrically connects the third bus and the second module to each other.

The invention provides a portable system for reading and writing a PCMCIA memory card. The portable system comprises a PC card adapter board (1), a transmission cable (2), a PC card driver (3) and a PCMCIA memory card interface, wherein the PC card adapter board (1), the transmission cable (2), the PC card driver (3) and the PCMCIA memory card interface are connected to a computer ISA bus; the PC card adapter board (1) is provided with a driving chip for driving signals, and the PC card driver (3) is provided with a filter circuit and a PC card slot control chip; an address signal line and a control signal line of the ISA bus are connected to a PC card slot control chip through a driving chip of the PC card adapter board (1), the matching resistor (4), the transmission cable (2) and a filter circuit of the PC card driver (3) in sequence; a data signal line of the ISA bus is connected to the PC card slot control chip through a matched resistor (4); and the PC card slot control chip is used for converting the ATA interface of the PCMCIA card into a bus signal. According to the invention, the reliability of long-distance reading and writing of the PCMCIA memory card by the computer is improved.