59results 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 provides a millimeter wave substrate integrated waveguide dual-circularly polarized low sidelobe common caliber array antenna. The antenna comprises a first metal copper cladding layer,a first medium layer, a second metal copper cladding layer, a second medium layer and a third copper cladding layer which are sequentially laminated from up to down. Two spaces generated by a 90-DEG coupler based on integrated waveguide and a common caliber parallel plate long seam array antenna are made to be orthogonal, for line polarization waves with phase difference 90 DEG, through an integrated substrate waveguide unequal power feed network, one-dimensional H-face low sidelobe forming for each line polarization self directional graph is carried out, through the circular polarization directional diagram synthesis principle, low sidelobe of the two orthogonal surfaces of a dual-circularly polarized directional graph is realized. The antenna is advantaged in that the one-dimensional forming technology is utilized to realize low sidelobe of two dual-circularly polarized orthogonal planes, realization difficulty of the feed network is simplified, a parallel plate long seam array modebased on the integrated waveguide is employed to realize low sidelobe dual-circularly polarized common caliber generation, and easy processing, low profile and high integration degree are realized.

The invention relates to a coreless abrasive machining measurement and control system and a corresponding coreless abrasive machining method. Combining with the fact that the coreless abrasive machining workpiece errors are mainly caused by the abrasion of a grinding wheel and a guide wheel, the coreless abrasive machining method samples and processes error signals through a workpiece error detection system in a coreless abrasive machining system, and sends the error signals to a PC computer system through a communication interface converter, and the PC computer system calculates the adjustedquantity and outputs signals to control a grinding wheel finisher, a guide wheel finisher and a feed mechanism driving system so as to achieve the finishing of the grinding wheel and the guide wheel and the adjustment of the feed mechanism. The measurement and control system and the method are mainly used for solving the problems that the prior system and the implement method thereof have a complex control method and are designed integrally.

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 provides a method for manufacturing a terahertz waveguide preform of an acute angle structure by means of a 3D printing technology. The method comprises the steps that firstly, computer cartographic software is adopted for drawing a stereo structure of the terahertz waveguide preform, then, and printing is performed by means of a 3D printer piece by piece to form the terahertz waveguide preform. The method is applicable to a majority of terahertz waveguide materials including metal or polymer and composite metamaterials thereof. Terahertz waveguide (shown in the figure) of various special-shaped cross-section structures of the acute-angle structure such as a triangle and a pentagram, the structural design freedom degree is increased, embedding of high-melting metal wires is facilitated, and the longitudinal structure of the waveguide can also be changed. The method is simple, convenient to implement and low in cost, the cross-section structures of the manufactured waveguide are abundant, the performance is excellent, and the method is applicable to large-scale industrial production and laboratory investigation, exploration and application.

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 relates to a preparation method of multi-arm acrylate block copolymer. The preparation method includes the steps of preparing hydroxyl terminated acrylate macromolecular initiator, preparing hydroxyl terminated acrylate block copolymer and preparing the multi-arm acrylate block copolymer. The preparation method has the advantages that an ARGET ATRP method is adopted to synthesize the multi-arm acrylate block copolymer, so that composition and structure of arms can be controlled accurately; dispersity of the copolymer is controlled through ATRP, so that regularity of the block copolymer is improved greatly, and product yield is increased; polymerization reaction can be performed in relatively open space, amount of catalyst is smaller than 500ppm, and the product can be used directly without removing the catalyst, and the preparation method is high in efficiency and low in cost as compared with conventional methods; reaction of hydroxy and isocyanate base is utilized to connect the arms on polyisocyanate in a keyed manner to form a multi-arm structure using polyisocyanate as the center and acrylate block copolymer as the arms; an arm-first core-second method is utilized to simplify the process and implementation.

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 an optical link linearization method. The optical link linearization method comprises step 1, obtaining an optical signal from an optical link and detecting and recovering a distorted electrical signal from the optical signal; step 2, building a compensation signal according to the distorted electrical signal; step 3, performing compensation on the distorted electrical signal through the compensation signal so as to enable the optical link to be linearized. According to the optical link linearization method, the optical link is an incoherent intensity modulation direct detection link and the simultaneous inhibition of IMD3 (Third-order Intermodulation Distortion) and XMD (Cross-over Modulation Distortion) is implemented by an optical down-conversion and digital post-processing combined nonlinear compensation algorithm; the operation complexity of the existing coherent detection technology experiment is reduced and the system stability is increased; meanwhile the accurate estimation on link parameters or the careful construction on a compensation light path when nonlinear compensation signals are established in a digital domain in the existing technical scheme is avoided and the implementation difficulty of the existing nonlinear inhibition algorithm is simplified.

The invention discloses a concourse transmission method for multi-path E1 data with offset frequency in SDH signal, and the steps are: (1) builds first-in first-out buffer corresponding with every E1 signal, and judges the offset frequency of E1 signal according to the number and changing situation of stored data in every buffer; (2) builds the concourse processing module; processes the data transmission in concourse module according to the offset frequency situation in step (1) between the E1 signal and the transmission clock; (3) processes the data transmission in concourse module according to the offset frequency situation in step (1) between the E1 signals. The invention provides that it can solve the concourse problems of multi-path E1 signals with offset frequency and the concourse transmission method in multi-path E1 data with offset frequency according to the offset frequency of E1 signal to self-adaptive SDH signal STM 1.

The invention discloses a universal driving system and method for a component serial interface, solves the problem that an existing upper computer is difficult to drive a satellite component interface, and belongs to the technical field of interface driving. The method comprises the steps of obtaining configuration information of a to-be-driven component, and determining interface configuration information and protocol configuration information according to the configuration information; wherein the interface configuration information comprises an interface baud rate, byte check information and byte stop bit length; wherein the protocol configuration information comprises a frame header identification code, a frame type identification length, frame type information, a frame length and frame verification information; setting a serial port register according to the interface configuration information; writing the data needing to be sent to the component into a sending register for sending; and receiving the data packet sent by the component by the receiving register, and sequentially carrying out the frame header verification and frame type verification on the received data packet according to the protocol configuration information, if the verification results are consistent, continuously carrying out data frame receiving and data frame verification, and otherwise, receiving a new data packet.

The invention discloses a pulse ultra wide band signal detection method based on compressed sensing. The pulse ultra wide band signal detection method based on compressed sensing includes the steps: utilizing random sampling in the compressed sensing theory to sample on received signals at a signal detection end, greatly reducing sampling rate which is needed by detection, and meanwhile arranging a stop condition which conducts part reconfiguration on the emitted pulse ultra wide band signals according to a specific parameter of a pulse ultra wide band emitter. The pulse ultra wide band signal detection method based on compressed sensing effectively reduces calculation cost of a detection method, utilizes a weighting least square estimation method to continuously reduce influence of an abnormal sample which corresponds to a position with a large residual value after the previous iteration, effectively improves rate of convergence of part reconfiguration process, guarantees orthogonality of the residual value and a chosen optimal vector, improves robustness of the detection method, obviously improves detection success rate under the condition of low signal-to-noise ratio, finally conducts detection judgment of signals by directly processing a part reconfiguration value through compressed sampling and simplifies achieving difficulty of the detection process.

The invention discloses a method and a device for realizing precise time protocol (PTP) message synchronization, and a storage medium. The method comprises the following steps: recording message time, identifying a PTP message, and judging whether the PTP message is a one-step Sync message; in a receiving direction, carrying out correction field modification processing on a one-step Sync message, and reading a timestamp recorded in a starting timestamp field OriginTimestamp when a new correction field is modified; and processing a one-step Sync message in a sending direction, and setting a start timestamp OriginTimestamp as a departure timestamp. According to the invention, the PHY records the entering and leaving time of the message at the MDI, and the one-step mode processing of the Sync message on the TC is realized by modifying the correction domain and the starting timestamp field of the PTP message while forwarding, so that the realization difficulty of the TC is simplified; extra network bandwidth occupation is avoided, and the time precision is also improved; and according to the invention, one-step Sync message modification is realized in the physical layer, the time precision is improved, the development difficulty of the system is reduced, and the development and maintenance cost of the product is also reduced.

The invention discloses a hemispherical resonant gyro force balance control circuit based on a force balance mode, and relates to the field of inertial sensors. The loop includes a hemispherical resonant gyro, an analog-to-digital converter, a signal demodulator, a low-pass filter, an average noise reducer, a loop controller, a signal modulator, and a dual digital-to-analog converter. Use the CORDIC algorithm to demodulate and modulate the signal, use the low-pass filter to extract the desired signal in the demodulation result, use the average noise reducer to reduce the signal noise, use the loop controller for correction control, and use the dual digital-to-analog converter The digital-to-analog conversion of the digital signal at the same frequency can conveniently greatly increase the number of digits of the digital-to-analog conversion, and improve the resolution of the feedback control signal while maintaining the dynamic range of the loop. The loop can greatly improve the control accuracy of the hemispherical gyroscope force balance loop, and is suitable for the high-precision hemispherical resonant gyroscope force balance mode.

The invention provides a member leaving management method and a system based on an IGMPv2 protocol. The method comprises the following steps: S1, a multicast member sending an IGMP leaving group message to an IGMP interrogator router and other multicast members in the multicast group; S2, if other multicast members in the multicast group still need to receive the traffic of the multicast group, sending an IGMP report message to the IGMP inquiry router; otherwise, ignoring the IGMP leaving the group message; S3, after the IGMP interrogator router receives the IGMP leaving group message sent bythe multicast member, If the IGMP report message sent by other multicast members in the multicast group is received, maintaining the multicast member table entry; if the IGMP report message sent by other multicast members in the multicast group is not received, deleting the multicast member table entry. The invention optimizes the IGMP member leaving group mechanism defined in RFC2236, reduces theprotocol message interaction frequency when the IGMP member leaves, saves the impact of the protocol message on the equipment, and effectively simplifies the implementation difficulty of the equipment to the protocol.

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 relates to a balance control method for common-mode voltage and neutral point voltage of a T-type three-level inverter, which comprises the following steps of: firstly, dividing a three-phase space vector of the T-type three-level inverter into six large sectors, and classifying each vector into a large vector, a medium vector, a small vector and a zero vector according to the amplitude; then selecting six medium vectors, one zero vector and six virtual small vectors as basic vectors of a novel virtual vector modulation strategy, dividing a three-phase space vector into twelve sectors again through the novel virtual vectors, adopting five-section symmetrical wave sending, and establishing overall calculation in a 60-degree coordinate system. Compared with the prior art, the method has the advantages that the implementation difficulty of suppressing the common-mode voltage is simplified, the voltage fluctuation of the neutral point is well suppressed, and the overall calculation amount is small.

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.

The invention relates to communication field, disclosing a service ability interaction management system and method in communication network, implementing a function of multi-service ability interaction management. And it processes inter-AS service interaction by setting logic function of service broker; sets dynamic produced and cancelled arbitrator and global manager module in the service broker, where the arbitrator is used to make inter-AS service interaction arbitration and the manager is used to maintain call related information, manage transfer of control right and provide arbitrator inquiry information and configure arbitrating rules; and introduces service status transfer mechanism and service interaction model, comprising statuses of hanging, inserting, interrupt, and mutual exclusion, and multi-service interaction implementing mechanism established based on these statues.

The invention discloses a method, a device and a storage medium for realizing a delay request message of a precise time protocol, including recording the message time, identifying a PTP message, and judging whether it is a one-step Delay Req message according to the identified PTP message type information; The correction field field of the Delay Req message is processed in the receiving direction for a one-step Delay Req message, and the start timestamp is set as the arrival time stamp; the start time is read when a new correction field is set for a one-step Delay Req message in the sending direction. The arrival timestamp of the record in the stamp field. The present invention realizes the one-step mode processing of the Delay Req message on the TC. The delay error on the PHY is eliminated, and the upper-layer module does not need to participate in the processing of the PTP Delay Req message forwarded by the local TC, which simplifies the implementation difficulty of the TC. The modification of the PTP Delay Req message on the TC is implemented in the physical layer, which improves the time accuracy and does not require the upper-layer module to participate in the PTP message processing, which reduces the difficulty of system development and reduces product development and maintenance costs.