34results about How to "Meet real-time processing needs" patented technology

The invention discloses an embedded intelligent monitoring and remote maintaining system of manufacturing equipment. A remote maintaining center and an embedded intelligent monitoring and maintaining unit which is installed at a different place constitute a star network, wherein the embedded intelligent monitoring and maintaining unit comprises a micro controller, a data acquisition module, a data interaction module, a man-machine interaction module and a data memory module, and the remote maintaining center comprises a system state monitor, an equipment fault diagnosis module and an equipment management module. The embedded intelligent monitoring and remote maintaining system has a man-machine interaction function, is wide in application occasion, and can well conduct real-time data processing.

The invention discloses an embedded intelligent monitoring and remote maintenance system of a powder forming machine. The embedded intelligent monitoring and remote maintenance system is composed of an on-site monitoring unit and a powder forming machine manufacturer remote maintenance center. A workshop on-site monitoring platform has the function of obtaining the important running state of the powder forming machine through real-time data interaction with a main controller of the powder forming machine and through workshop field data collected through data collection devices such as a sensor, a video collection device and an audio collection device, the function of displaying the real-time running state of the powder forming machine on a display device, the function of alarm prompt and the like. Meanwhile, the on-site monitoring unit can conduct data compression and data classification on state parameters of the powder forming machine and sends data to a remote maintenance center of a device producer and a person in charge of a certain part of the powder forming machine through an Ethernet interface, a GPRS interface and a short message sending module, and therefore online monitoring and remote fault diagnosis of the powder forming machine, and the maintenance service are achieved, and related personnel are notified. The embedded intelligent monitoring and remote maintenance system is low in cost, complete in function, high in configurability and high in tailing capability, functional modules can be increased or reduced according to the on-site running state of the powder forming machine, and the embedded intelligent monitoring and remote maintenance system has high universality.

The invention belongs to the field of radar signal processing, and discloses a missile-borne SAR sub-aperture forward squint high-order nonlinear chirp scaling imaging method. According to the method, missile-borne SAR forward squint high-order nonlinear chirp scaling imaging is achieved through sub-aperture data, and the method can be used for SAR imaging of airborne platforms or missile-borne platforms. The method mainly includes the steps of firstly, conducting distance pulse pressure and time domain walking correction on an echo signal; secondly, converting the signal into the two-dimensional frequency domain, conducting frequency domain migration correction and secondary compression, and compensating for the high order phase in the orientation direction; thirdly, leading high-order nonlinear chirp scaling disturbance factors into the orientation frequency domain, and correcting the space variability of the Doppler frequency modulation and the high-order terms in the orientation direction; fourthly, focusing an image on the orientation frequency domain through spectrum analysis. The method solves the problem of decoupling of distance orientation and the orientation focus depth problem caused by time domain walking correction, and the method can meet the requirements for different scenes and high resolution and can be used for the field of ground mapping and other fields.

The invention discloses a RapidIO-based high-speed communication method between SoC chips of an on-board system. Six transfer rates are included, based on a RapidIO 3.1 communication protocol, according to market demands, the RapidIO interface of SoC chips is configured with four transfer modes: an AXI bus mode, a DMA transfer mode, a DME transfer mode, and a doorbell mode. The communication method designs an automatic transmission method, according to the amount of data to be transmitted and destination address basic information, the most efficient transfer mode is selected from four transfermodes automatically, that transmission bandwidth is fully utilized, the problem of high speed communication between SoC chips and other connected chip-to-terminal equipment in missile guidance systemis solved, and the requirements of large data volume and small data volume are met. The transmission rate can reach 10.3125 Gbps, and the utilization ratio of transmission bandwidth can be increasedfrom 30% to 52%. The method is suitable for most hardware transmission interfaces on the market.

The invention discloses a hybrid precoding method based on a PAST algorithm in a millimeter-wave massive MIMO system, and belongs to the technical field of electrical communication. In the hybrid precoding of millimeter-wave massive MIMO system, the method first simplifies the total achievable rate, decomposes it into a series of sub-rate optimization problems, and uses the SIC idea to maximize each sub-rate in turn. In the optimization process of each sub-rate, the optimal unconstrained hybrid precoding of each sub-rate is estimated by the PAST algorithm, and finally the constrained hybrid precoding matrix is ​​calculated according to the estimated result. This method can obtain almost the same performance as the SVD-based hybrid precoding algorithm in the HC system structure, and with the increase of the number of transmit antennas, the complexity and time-consuming of this method are much lower than that of the SVD-based hybrid precoding algorithm. Meet the real-time processing requirements of the algorithm. At the same time, the method can be applied in three system structures of FC, SC and HC, and has good universality.

The present invention discloses a method, an apparatus, and a system for scheduling a processor core in a multiprocessor core system, which relate to the field of multiprocessor core systems, and can meet the demand for real-time network I / O processing, thereby improving the efficiency of the overall multiprocessor core system. The method for scheduling a processor core in a multiprocessor core system includes: obtaining, in the running process of the multiprocessor core system, a first control parameter, a second control parameter, a third control parameter, and a fourth control parameter; transferring a packet of a data flow that enters the multiprocessor core system to an idle processor core for processing based on the first control parameter, the second control parameter, and the third control parameter; and switching over the processor core in the multiprocessor core system between an interruption mode and a polling mode based on the fourth control parameter. The present invention is mainly applied to schedule a processor core.

The invention provides a real-time processing method for cancellation of direct wave and clutter of an external radiation source radar on a graphic processing unit (GPU), a high-efficiency parallel processing process is built, and the real-time processing capacity of an algorithm is improved. The method comprises the steps: (1), conducting parallel processing on signal in a section mode, and sectioning a signal to be processed in T seconds; (2) adopting a BLMS method to conduct cancellation processing on the signal of each section, wherein the signal of each section is parallel processed through the step (1); (3) adopting the GPU to conduct parallel processing on the signal, processed through the step (1), of each section, conducting processing on data in each section through a fast Fourier transform (FFT) algorithm in a multithreading mode, removing an overlapping region on an output result, conducting splicing, at the same time, outputting a filter coefficient of a last block of data, and serving the filter coefficient as an initial weight coefficient of subsequent data processing; and (4) serving an iterative finally-obtained filter coefficient w (n) as an initial filter weight value of data in a next second, namely, iterating the data of a first section for K times, and processing the subsequent data only once.

The invention discloses an FPGA-based solid-state power controller inverse time over-current protection device, mainly solving the problems that the existing time over-current protection device is poor in reliability, high in power consumption, low in accuracy and poor in strong electromagnetic interference resistance. In the invention, a clock management module, a multiple data register group module, an FSM control module, an inverse time over-current protection module and an output control module are arranged in the interior of FPGA; wherein the multiple data register group module receives an FSM control module address signal and outputs data to the FSM control module which judges the data, the judged data enters the inverse time over-current protection module, result calculated by the inverse time over-current protection module is returned to the FSM control module which compares the returned data, the comparison result is sent to the output control module which outputs a control signal to an outside circuit, and the clock management module provides a system clock for all modules. The invention has the advantages of high accuracy, strong reliability, strong electromagnetic interference resistance, low power consumption and the like.

The invention discloses a field programmable gate array-based (FPGA-based) vehicle vibration signal wave filtering device, which is characterized in that: a reference noise signal x(n) is switched into an input end of a first register, a noisy vibration signal d(n) is switched into an input end of a second register, an output signal x(n) of the first register is switched into an input end of a wave filter, an error signal e(n-1) outputted by a subtracter is respectively switched into an input end of a third register, a second input end of the wave filter and an input end of a variable step size factor calculation circuit, an output signal variable step size factor Mu(n-1) of the variable step size factor calculation circuit is switched into a third input end of the wave filter, an output signal d(n) of the second register is switched into an input end of the subtracter, a filtered reference noise signal y(n) which is outputted by the wave filter is switched into another input end of the subtracter, and the third register outputs a vehicle vibration signal after being filtered. An algorithm referred by the device has the advantages of fast calculating speed, fast convergence speed, high real-time performance, good filter effect and the like, so the real-time processing requirement of the signal can be satisfied.