43results about How to "Realize reading and writing" patented technology

The invention provides an automobile diagnosing device which comprises a storage, a controller area network (CAN) controller/transceiver and a processor. The storage is used for storing a Chinese character base, an automobile model parameter data base and automobile CAN messages. The CAN controller/transceiver is connected with an automobile and used for receiving the CAN messages from an automobile. The processor is used for generating and updating the automobile model parameter data base, configuring automobile model parameters in the automobile model parameter data base, generating a monitored message list according to the configured automobile model parameters, maintaining the monitored message list, monitoring the plurality of CAN messages from the automobile according to the messages in the monitored message list and conducting fault diagnosis on the automobile according to monitoring results. The automobile diagnosing device supports detection of a main line signal appointed by a user and facilitates fault detection in after-sale and researching and development processes of the automobile.

A light transmission module of tunable positive-governing type consists of tunable positive-governing laser, positive-governing control circuit, automatic light power control circuit, automatic temperature control circuit, laser switch control and performance detection circuit. It is featured as enabling to realize parameter calibration, on-line regulation and performance parameter diagnosis of digitalization module by leading in micro control unit and nonvolatile digital potentiometer.

The invention discloses an FPGA-based DDS random waveform signal generator. The random wave form realization mode of a conventional signal generator is online generation and downloading. A random waveform module is additionally arranged in such a mode, as a result, the cost is increased and inconvenience is brought to users. The conventional signal generator can merely realize signal reproduction and cannot well optimize a frequency spectrum. In the FPGA-based DDS random waveform signal generator, a whole system-on-a-chip comprises an embedded phase-locked loop, a one-out-of two data selector with a bit width of ten, a one-out-of-four data selector with a bit width of eight, a first accumulator A with a bit width of thirty two, a second accumulator B with a bit width of thirty two, a ROM_triangular wave on a chip, a ROM_square wave on a chip, a ROM_sine wave on a chip, a ROM_random wave on a chip, a scrambling generator and an NIOSII core. The FPGA-based DDS random waveform signal generator has the advantages of high versatility, simple control operation, and frequency spectrum optimization.

The invention provides a racetrack memory based on magnetic skyrmions, and belongs to the technical field of magnetic devices. The racetrack memory comprises an antiferromagnetic coupling twin-track magnetic nano belt, and the magnetic nano belt is divided into an information input part, an information storage part and an information reading part sequentially in the track direction. The magnetic skyrmions with the opposite polarity are utilized for presenting binary number zero or one, and the magnetic skyrmions move from the information input part to the information reading part in the trackdirection of the twin-track magnetic nano belt. The magnetic skyrmions are periodically generated in one of the track of the twin-track magnetic nano belt where the information input part is located,whether the polarity of the generated magnetic skyrmions needs to be changed or not is determined according to the input data, and accordingly whether the magnetic skyrmions need to be moved to the other track of the twin-track magnetic nano belt or not is determined. The information storage part is divided into a plurality of storage units in the track direction of the magnetic nano belt, and onemagnetic skyrmion is stored in one storage unit. The information reading part is used for reading the polarity of the magnetic skyrmions passing through.

The invention is applicable to the technical field of computer data storage and provides a flash memory array management method and device. The flash memory array management method comprises the steps of dividing a flash memory array into n physical working groups, wherein the same pages of all flash memories in the same physical working group are combined to form a physical combined page, and the same blocks of all flash memories in the same physical working group are combined to form a physical combined block; dividing a logic space into a plurality of logic pages according to the size of the physical combined page, dividing the multiple obtained logic pages into n logic working groups corresponding to the physical working groups, performing re-addressing according to logic addresses of the logic pages of the same logic working group to obtain logic combined pages; managing the logic combined pages in the logic working groups and the physical combined page in the corresponding physical working groups in a dynamic mapping mode so as to achieve reading and writing of the flash memory array. By means of the flash memory array management method and device, the storage space occupied by a mapping table is decreased, and write-in and amplification caused by block mapping are decreased.

The invention provides database equipment and a system, relating to the communication field. The database system comprises at least one database equipment, the database equipment obtains the data point of equipment in a corresponding zone in the network and records the data point in the form of record items in a memory address corresponding to the record type of the data point in a memory address corresponding to the equipment; the corresponding identity information of the data point in the database equipment is configured, and the corresponding relation of the identity information of the data point and the memory address is built; the identity information comprises the item name and the item number of the record item; when an access request for accessing the data point is received, the access request comprises the identity information and the record item information of the data point; in the memory address corresponding to the identity information in the access request, the record item matched with the record item information in the access request is obtained, and the obtained record item is sent to an initiator of the access request.

The invention discloses a J1939 bus data recorder. The J1939 bus data recorder comprises a master controller MCU, wherein the master controller MCU respectively reads data of a J1939 data bus and CAN bus diagnosis data of a vehicle bases on a UDS protocol through two CAN interface circuits, and reads and writes a TF card through a TF card interface circuit, and a clock signal is provided for the master controller MCU through an RTC module. The master controller MCU is an STM32 chip, and adopts a uCos-iii operation system. The invention further discloses a component layout method and a technological process of the J1939 bus data recorder; the J1939 bus data recorder can be widely applied to J1939 bus data recording aiming at commercial passenger cars and trucks so as to carry out the off-line analysis on vehicle bus data. The J1939 bus data recorder is very convenient and rapid to use, realizes the immediate recording after insertion, and recorded data files can be opened by using specific software to be used for carrying out data analysis.

The invention discloses an intelligent ODF system used in a communication machine room of a power grid. The system is mainly composed of traditional ODF functional components and intelligent functional components. The traditional functional components include ribbon optical cable entry modules, bundle optical cable entry modules, and the like. Intelligent functional components include cell frame, cell frame control board, business module, main processing unit, etc. The unit frame is used to place the control board and the service board, and the unit frame control board collects the information of the business module and is connected to the main processing unit through the data line, and the business module is used to realize functions such as wiring branching, and collects the information of the port to the The electronic tag data information is sent to the unit frame control board through the data line, the main processing unit is connected to the unit frame control board through the RS485 bus, and the port of the service module is managed centrally, and the external interface is connected to the intelligent ODN management system to receive control commands and Upload resource data information. The system is applied in the communication room of the power grid, which can realize the intelligent management of optical fiber connection and automatic collection of resource data, and the real-time performance and accuracy have been improved.

The invention discloses a file sharing method. The method comprises the steps that after a disk file is in a shared state, a virtual machine issues a disk IO request, wherein the disk IO request comprises operation objects and operation types; corresponding disk files are mounted to the virtual machine according to the operation objects; the disk files are subjected to sharing operation of the corresponding types of files according to the operation types, wherein the operation types comprise uploading, accessing, exporting, editing and downloading. Accordingly, the read-write speed of file sharing can be significantly increased, and meanwhile network bandwidth resources are occupied as few as possible. The invention further discloses a file sharing device and system and a readable storagemedium. The above-mentioned advantages are achieved.

The invention discloses a method for realizing an IEC61499 flexible function block by using an IEC61131-3 function block, which belongs to technical field of computer control, and is characterized by using characteristics of a function block with IEC61131-3 standard, namely the function block is reused completely, supports variable distribution and is suitable for completing complicated control strategy, generating a flexible function block with IEC61499 standard accorded with function requirement by configuration, downloading the flexible function block into a device of a programmable control system, executing function for realizing flexible block definition by scanning the IEC61131-3 function block. The invention has advantages of solving problem than the IEC61449 function block configuration can not complete special operation, expanding function of the IEC61499 function block, reducing program application difficulty of distribution control system, and having real meaning for application of the distribution control system based on the IEC61499 function block.

The invention provides a pipeline type serial interface flash memory access device. By realizing the pipeline specific hardware logic, the pipeline type access of a serial interface flash memory can be realized according to a user-defined pipeline access protocol. According to the pipeline type serial interface flash memory access device disclosed by the invention, with an access interface with a 2-bit I/O (Input-Output) space, the reading, writing, erasing and other operations of the serial interface flash memory can be realized; and the pipeline type serial interface flash memory access device can be matched with a corresponding arbitration mechanism, so that the off-line, in-band and out-of-band access methods can be provided, further, in the design of a hardware system, great flexibility for multi-path access of the serial interface flash memory can be greatly provided, and the system research and development cost and the debugging period of the serial interface flash memory can be reduced.

The invention discloses a character recognition method based on a humanoid robot and the humanoid robot. The method comprises the following steps that: the humanoid robot acquires a character image, and further adopts an open source computer vision library mode to perform image processing on the acquired character image to obtain a black-and-white effect image, and further performs character recognition on the obtained black-and-white effect image to recognize character information in the image. Through the method, the humanoid robot can recognize characters, and the blank of the humanoid robot in the field of character recognition is filled.

The invention discloses an intelligent comprehensive management system of an electric vehicle. The system comprises a core control device CPU (Central Processing Unit) of the entire equipment, wherein the CPU is used as the center and is connected with a big dipper GPS (Global Positioning System) dual-mode module, a GSM/GPRS (Global System for Mobile Communications/General Packet Radio Service) module, a Bluetooth circuit, an NFC (Near Field Communication) circuit, a storage module, a switch quantity input and output module and a power management module. By using the system, storage, read and write of user information and vehicle running information can be realized; vehicle information and owner information in the equipment can be read by the traffic management department by using intelligent mobile phones or other portable equipment through a near field communication mode and can respond to an owner to facilitate the law enforcement and management of a vehicle.

The invention provides an optical disc writing method and device based on nano photoetching, an optical disc reading method and device based on nano photoetching, an optical disc read-write device based on nano photoetching, an encoding method of inscribing control information, a decoding method of the inscribing control information and a method for decoding digital storage information from a reflection spectrum. According to the technical scheme, the optical disc information reading rate and the resolution capability can be effectively improved, and the storage density and the storage dimension of the optical disc are greatly improved.

The invention discloses an IC card management device with card identification and determination, counting and storage functions. The IC card management device comprises a case, a card issuing mechanism, a card guiding mechanism, a card pushing mechanism, a card box and a control mechanism. The card guiding mechanism is provided with a card guide wheel, a card guide channel and a channel sensor installed on the card guide channel; the card guiding mechanism guides an IC card issued by the card issuing mechanism to the card pushing mechanism through the card guide channel by the card guide wheel; and the card box is arranged right above the card pushing mechanism. Besides, the device also includes a card reader and a card counting device; and the card reader is installed on the card guide channel and is connected with the control mechanism. The card reader can read IC card data and determine the quality of the card. The card pushing mechanism is used for pushing a good-quality card into the card box and leading a bad-quality card out of the device. The card counting device is arranged inside the card box. Therefore, functions of card quality identification and determination, counting and storage can be realized.

The invention relates to the technical field of information processing, in particular to a storage content access method and device, electronic equipment and a computer storage medium. The method comprises the following steps: when a virtual machine of a first host runs, obtaining a storage address of to-be-accessed storage content from a logic virtual disk loaded by the virtual machine; Wherein the storage address adopts a storage format defined by a first access protocol; And based on the obtained storage address, accessing the storage content of the virtual machine in a target storage device through a first access protocol interface. Through the storage content access scheme provided by the embodiment of the invention, the virtual machine does not need to directly access the real physical storage space, so that the access mode of the virtual machine to the real physical storage space can be shielded.

The present invention discloses a method for transmitting a compressed coding result of video, which comprises: a. setting a maximum capacity and a output threshold value of a First-In First-Out (FIFO) memorizer; b. receiving the input current frame data, compressing and coding the received data, inputting the coding result into the FIFO; every time the readable data capacity in FIFO arriving at the threshold value, controlling the output of the coding result data in FIFO; c. after accomplishing the coding of the current frame data, controlling the output of the remnant coding result data in FIFO, returning to the step b until outputting all the frame coding data of the video. The present invention also discloses a device for transmitting a compressed coding result of video, which includes: a buffer unit, a coding unit, a FIFO and a transmission control unit. Application of the method and device disclosed in present invention can make full use of bus resources occurred in the vacant time between coding the data and outputting the data, and can save system resources occupied in whole coding and outputting process.

The invention belongs to the field of intelligent Internet of things management and particularly relates to a portable pig breeding information recorder. The portable pig breeding information recorder of the invention comprises an ear tag read-write module, an information display module, an information processing module, a keyboard input module, a power management module and a communication interface module. The ear tag read-write module is used for read-writing information inside ear tags; the information display module is used for information displaying and operation prompting; the information processing module is the control center of the whole recorder; the keyboard input module is used for transferring operation of a user to the information processing module; the power management module can effectively manage power supply of the instrument; and the communication interface module is mainly used for transferring the read-written ear tag information to a data storage center and receiving modification information of the user. By adopting the instrument, all kinds of breeding information about pig breeding links can be effectively recorded, the production efficiency can be greatly improved, the labor intensity of workers can be reduced, and the level of intelligent management on agriculture and animal husbandry is promoted.

The invention discloses a real-time data archiving system based on a GIS. WHICH COMPRISES PROJECTION CONSTRUCTION MANAGEMENT DATABASE, the output end of the project construction management database isconnected with a project list correlation table; the output end of the engineering list correlation table is connected with a metering payment correlation table; the output end of the metering payment correlation table is connected with an experiment detection system database, an image-text management system database and a GIS database. The output ends of the experiment detection system database,the image-text management system database and the GIS database are connected with a service use right configuration information table; the output end of the public operation database is connected with a Windows service data interface, a Web service data interface and a 4G service data interface. According to the GIS-based real-time data archiving system, part of attributes are selected accordingto user requirements or system function requirements, and data reading, writing, querying and browsing are facilitated.

The invention discloses an information collection system suitable for power system equipment. The system comprises an information collection device, which comprises a control unit, an RFID transceiverunit, a Bluetooth communication unit, a charging interface, a communication interface and a power carrier unit; the RFID transceiver unit, the Bluetooth communication unit, the power carrier unit, the charging interface and the communication interface are all electrically connected with the control unit; the RFID transceiver unit is configured to read and transmit relevant information on the radio frequency label of the field equipment to the control unit; and the Bluetooth communication unit is configured to realize information transfer between the information collection device and an external smart phone. The invention integrates information collection, network communication and equipment charging into a body, which reduces the complexity of the equipment, realizes sharing of a device by a plurality of pieces of equipment to implement communication with the system host, avoids repeated authorization operations of the system management department on a plurality of collection devices,and alleviates the work pressure of the system management department.