58results about How to "Simplify implementation difficulty" patented technology

The invention discloses a rotating transformer digital converter capable of on-line failure detection and fault-tolerant control. According to the method, an electric automobile PMSM is used for controlling matched utilization of a microprocessor DSP and the rotating transformer so as to achieve a PMSM rotor position of a drive system of the PMSM. Failures of the rotor position of the drive system of the PMSM can be detected real-timely. Meanwhile, a kalman filter is adopted for identifying errors of the rotor position, and realizing self-adaptive fault-tolerant control, and therefore precision of acquiring the rotor position is improved.

The embodiment of the invention discloses an image-text matching method and device, a storage medium and equipment, and belongs to the technical field of computers. The image-text matching method comprises the steps of obtaining an image and a text to be matched; generating a candidate instance feature set according to the image; aggregating candidate instance features in the candidate instance feature set by using a self-attention mechanism to obtain an instance feature set, each instance feature in the instance feature set corresponding to one object in the image; encoding the text to obtaina text vector; and calculating a matching degree between the image and the text according to the instance feature set and the text vector. According to the embodiment of the invention, the realization difficulty of image-text matching can be simplified, and the accuracy of image-text matching can be improved.

Disclosed is a remote wireless centralized meter reading method and a system thereof; step 1, wireless network configuration is planed and a network topological structure is stored into a computer; step 2, when reading the meter, the computer establishes a meter reading protocol packet according to the topological structure stored in the step 1, and the protocol packet is sent to a wireless concentrator through the Ethernet; and step 3, the wireless meter reading protocol packet executes routing transmission according to the topological structure recorded in the step 2. A wireless telemetering meter sends the data to a remote computer through a router and a concentrator in the GPRS way. Adopting the multilevel wireless routing communication protocol, the method simplifies the complexity and the implementing difficulty of the wireless centralized meter reading, can randomly regulate the topological structure through the computer, and improve the maintainability. The meter reading real-time property is high; the reliability is high; and the network deployment can be executed in subdistrict, city and the entire country, so as to realize that the users can read and monitor the terminal meters without going out. Adopting dual-communication, the method and the system can read the meter and also can control the meter action.

The invention discloses an audio and video synchronous control method based on a moving picture experts group (MPEG)-2. According to the method, own information dependence on a program stream (PS) and a transition stream (TS) is avoided, and system timing clock (STC) calibration is directly performed on a program timing stream (PTS) information in a packetized elementary stream (PES), so that a synchronization effect can be achieved under the condition that a program clock reference (PCR) or a system clock reference (SCR) are not accurate. According to a solution that the PS is required to be converted to the TS or the TS is required to be converted to the PS, a PCR packet of the TS or a SCR packet of the PS are not required to be rebuilt in a conversion processing program, so that the load of a system processor is reduced, and the program implementation difficulty is reduced.

The invention discloses a low-cost and low-profile broadband Massive MIMO antenna unit, comprising a conductor parasitic patch, a conductor coupling sheet, an antenna radiator and a conductor grounding layer which are arranged in turn and at intervals from top to bottom along a vertical straight line, wherein dielectric layers are arranged between adjacent parts. A vertical slot and a horizontal slot are symmetrically arranged at the center position of the conductor coupling sheet, and the vertical slot and the horizontal slot are orthogonal to each other and are used to expand the frequency bandwidth of the antenna. The antenna radiator is provided with a horizontal polarization feed point and a vertical polarization feed point with the feed directions orthogonal to each other. A first isolation slot is arranged at the center position between the horizontal polarization feed point and the vertical polarization feed point. Second isolation slots are arranged on the two sides of the horizontal polarization feed point and on the two sides of the vertical polarization feed point. The first isolation slot and the second isolation slots are used to improve the isolation between the horizontal polarization feed point and the vertical polarization feed point. The low-cost and low-profile broadband Massive MIMO antenna unit has the technical features of wide frequency bandwidth, high degree of isolation, high single-antenna gain, low cost and low profile.

The invention discloses a device with a plurality of wireless communicating systems, which comprises a wireless communicating system and at least one peripheral wireless communicating system, wherein the wireless communicating system comprises a first CPU used to send the order for controlling the communicating condition of the wireless communicating system; the antenna system is used to receiving and sending the radio-frequency signal of the wireless communicating system; the antenna switching unit is between the wireless communicating system and the antenna system; the antenna switching system connects the antenna system and the wireless communicating system by the control order.

The invention discloses a Doppler frequency offset processing method between a low-orbit satellite and a ground terminal; the processing method comprises the steps that an upper computer calculates the time origin; step 2, a servo sub-machine feeds back the accurate time information of the starting time of a successful satellite to the upper computer; step 3, the upper computer calculates relevantinitialization parameters; step 4, the upper computer transmits relevant initialization parameters to a DSP, and the DSP transmits the quantized parameter information to an FPGA; step 5, the FPGA performs quantitative calculation of Doppler frequency offset according to the initialization parameter information transmitted by the DSP, and a transceiver carries out separate calculation according todifferent carrier frequencies; and step 6, according to the calculated Doppler frequency offset estimation value, pre-distortion is carried out on an emission sub-machine, and post-compensation is carried out on a receiving sub-machine. According to the method, the stable carrier synchronization is realized; the difficulty of satellite decoding is reduced; the hardware implementation difficulty of Doppler frequency offset calculation is simplified, so that complex algorithm design in the FPGA is avoided; and the pre-distortion and compensation conditions of the bottom-layer Doppler frequencyoffset are monitored in real time.

The invention relates to a method for constructing a superblock by the subdivision information of in-out edge relation. In a dynamic binary translator, abundant subdivision information is obtained in a way of dynamically recording the executing time of each basic block, the corresponding relation between an in-edge and an out-edge in the basic block and the executing time of each out-edge corresponding to certain in-edge, and based on the subdivision information, the superblock is constructed, so as to optimize the program performance. The subdivision information obtained by the invention is more detailed and exacter and can reflect the executing condition of a basic block during a whole source program, thereby reducing the executing performance loss which is required to be cost during the process of obtaining the subdivision information, providing exact and abundant information for the subsequent process for constructing the superblock and ensuring the obvious optimization effect. A mechanism is flexible and variable and can provide different information for dynamic construction and static construction selectively, and the optimization effects of different intensities are obtained.

The invention discloses a multiple frame trunking system, a central exchanging frame and a method capable of achieving data exchange, and belongs to the technical field of communication. The system comprises at least one user frame, external intersecting inter-working equipment and the central exchanging frame. The interior of the central exchanging frame comprises at least one exchanging net plate. The exchanging net plate in the central exchanging frame and the user frame are connected with the external intersecting inter-working equipment. User data of the user frame are intersected in the external intersecting inter-working equipment. The exchanging net plate in the central exchanging frame is used for conducting data exchange of the user data in the user frame through the external intersecting inter-working equipment. The exchanged data are sent to the user frame through the external intersecting inter-working equipment. The user frame and the central exchanging frame are connected through the external intersecting inter-working equipment so as to enable the exchanging net plate in the central exchanging frame to conduct the data exchange of the user data in the user frame through the external intersecting inter-working equipment, and therefore capacity of the trunking system is improved, realizing difficulty of the central exchanging frame is simplified, and system cost is reduced.

The invention provides an image foreground and background segmenting method and device, wherein the method comprises the following steps of: segmenting a target frame image into a plurality of blocks; determining the motion states of all the blocks, wherein the motion states include a static state and a dynamic state; counting the static state time of the block in the static state; refreshing a background image of the block in the static state when the static state time of the block is larger than a first preset threshold; and extracting a foreground image from the target frame image according to the refreshed background image. By using the image foreground and background segmenting method and device, the segmentation processing course of a foreground and a background of the image can be simplified, the real-time processing requirement of an embedded device is met, the image segmenting accuracy is improved, resources are saved, and the processing efficiency is increased.

The invention relates to a method for one-step synthesis of carboxylic acid with two extended carbon chains from olefin, which comprises the following steps: under the protection of inert gas, sequentially adding an olefin substrate, a photocatalyst, a hydrogen atom transfer reagent, alpha-haloacetic acid, a reducing agent, a solvent and protonic acid into a reactor, and reacting at normal temperature under the irradiation of 25W blue light to obtain a reaction product; diluting, alkalizing, washing, acidifying and extracting the reaction product to obtain an organic phase; and finally, carrying out reduced pressure distillation and column chromatography on the organic phase to obtain a carboxylic acid product with two extended carbon chains; or carrying out reduced pressure distillation and column chromatography on the reaction product to obtain a carboxylic acid product with two extended carbon chains. The invention is simple to operate, direct synthesis conditions are mild, mutual conversion among various functional groups in the traditional carboxylic acid compound synthesis process is avoided, and the atom and step economy of the reaction is improved. Meanwhile, the method disclosed by the invention can also be applied to the simplified synthesis of the medicines cinacarbazide and tirofiban.

The invention discloses a positioning method and device, and the method is used when first electronic equipment carries out the positioning of to-be-positioned detected electronic equipment which can carry out wireless communication. The method comprises the steps: scanning at least one piece of second electronic equipment in a set range through the first electronic equipment, wherein the second electronic equipment can communicate with the first electronic equipment in a wireless manner; building a first positioning reference, which at least comprises the feature information of the first and second electronic equipment, through at least one piece of first feature information of the second electronic equipment; controlling the electronic equipment in the first positioning reference to detect the detected electronic equipment, and obtaining the second feature information of the detected electronic equipment; carrying out the analysis of the second feature information based on the first positioning reference, and positioning the detected electronic equipment. According to the scheme of the invention, there is no need of any special hardware equipment for support, so the implementation difficulty of positioning is reduced.

The invention discloses a hemispherical resonant gyro frequency control circuit based on a force balance mode, which includes a hemispherical resonant gyro head, an analog-to-digital converter and a digital-to-analog converter, and also includes CORDIC quadrature demodulation, arctangent, delayer, differential device, loop controller, frequency controller, digital frequency synthesis, digital-to-analog converter, use the CORDIC algorithm to perform quadrature demodulation and arctangent operation on the input signal to solve the phase of the input signal, use the delay device and the difference device to The calculated phase signal is differentially calculated to obtain frequency difference information, and the loop controller is used to correct the frequency difference signal to improve loop performance, and the frequency controller is used to control the frequency of the CODIC modulator. The resonant frequency of the hemispherical resonant gyroscope can be locked by using this loop, and the frequency locking precision and frequency locking rate of this loop can be adjusted through the frequency controller, and the high precision of frequency locking and the convenience of loop adjustment can be realized at the same time.

The invention discloses a control method and system for a bidirectional vehicle-mounted charger, and the method comprises the steps that a PFC control module recognizes the input mode of the system ina charging mode, and informs the vehicle control unit of the input mode through an LLC control module and an application layer interface module; the vehicle control unit sends a charging enabling instruction to the application layer interface module, the LLC control module and the PFC control module according to the input mode; the application layer interface module, the LLC control module and the PFC control module start corresponding charging operation; in the discharging mode, the vehicle control unit sets the output mode of the system according to the output load type and sends a discharging enabling instruction to the application layer interface module, the LLC control module and the PFC control module; and the application layer interface module, the LLC control module and the PFC control module start corresponding discharge operations. According to the invention, logic loopholes and hidden fault points are avoided when the system works, and the reliability of the bidirectional charger is enhanced.

The invention discloses a method and device for realizing a one-step mode of a precise time protocol message, and a storage medium; the method comprises the steps: recording the message time; then identifying the PTP message, judging whether the PTP message is a one-step message or not, if the PTP message is the one-step message in the receiving direction, storing an arrival timestamp, and storing the arrival timestamp of the message in a register in a PHY; then in the transmitting direction, reading the arrival timestamp of the message and calculating the residence time by using the departure timestamp and the arrival timestamp, and then modifying the correction domain field of the PTP message by using the residence time. According to the invention, the PHY records the entering and departure time of the message at the MDI, and the correction domain of the PTP message is modified while forwarding; therefore, the one-step mode processing of the PTP message on the TC is realized, and the time delay error on the PHY is eliminated; besides, the upper layer module does not need to participate in processing of the PTP message forwarded by the local TC, so that the implementation difficulty of the TC is simplified. Meanwhile, extra network bandwidth occupation in a two-step mode is avoided, and the development and maintenance cost of the product is also reduced.

The embodiment of the invention provides a software product detection device, system and method and a storage medium. The device comprises a software product obtaining module used for obtaining to-be-merged products of software; a software product grouping module which is used for grouping the contents of the to-be-combined products of the software according to a preset grouping rule; a software product storage space detection module which is used for comparing the storage space occupied by each group of content with the storage space threshold corresponding to the group, wherein the sum of the storage space thresholds corresponding to the groups does not exceed the storage space threshold corresponding to the software, and if the storage space occupied by at least one group of contents exceeds the storage space threshold corresponding to the group, it is indicated that the to-be-merged products of the software are not allowed to be merged. According to the scheme provided by the embodiment of the invention, products which do not meet the admission condition can be effectively prevented from being combined.