12 results about "SpaceWire" patented technology

A kind of SpaceWire bus network time delay measurement method and device based on FPGA, SPW-EOP interrupt module is added in the interface controller of SpaceWire bus time delay network, and connect time delay measurement FPGA module, data sending end host CPU controls interface controller to send variable length data packet according to fixed cycle, when the end of each data packet leaves the host interface of interface controller, SPW-EOP interrupt module is triggered to generate interrupt signal, and is sent to time delay measurement FPGA;Data packet is forwarded to receiving end interface controller through SpaceWire bus, also triggers the interrupt signal generated by the SPW-EOP interrupt module of interface controller, and is sent to time delay measurement FPGA;Time delay measurement FPGA calculates transmission time delay in interrupt signal.This application realizes high-precision measurement of SpaceWire link data transmission delay on physical layer, and the measured data is accurate and has strong universality, and the measurement method is efficient, which provides reliable basis for time planning of spacecraft data transmission task.

This invention provides a method and system for transmission line inspection and analysis based on digital twins. The method involves: using a digital twin object identifier as the core, uniformly solidifying the transmission line structure and constructing an initial static line structure model; based on continuously collecting multi-source sensing data and forming a time-series operational observation set, constructing a multi-physics coupled evolution model that simultaneously characterizes icing and melting, thermal equilibrium response, and mechanical evolution; identifying hidden risks by jointly discriminating the state evolution trajectory of key state variables and their historical reference distribution; and conducting parameterized perturbations and multi-scenario simulations to assess operational reliability risks. Finally, the risk development trend is reflected back into the spatial line model, generating forward-looking inspection and analysis results. This invention can perform line inspections on transmission lines that are under long-term alternating thermo-mechanical coupling conditions of icing and melting.

This invention discloses a power system frequency prediction method based on coupled state recursive constraints and deep Koopman modeling. The steps include: acquiring simulated frequency data and performing data preprocessing to obtain local fast-changing frequency deviation signals; constructing phase space trajectory vectors through time-delay embedding processing; building a deep Koopman model; using an encoder to elevate the phase space trajectory vectors to the observable space; performing linear state evolution of the frequency state vectors in the observable space using a linear Koopman operator matrix; and projecting the observable space states back to the original state space using a decoder to output predicted values ​​of the local fast-changing frequency deviation data; constructing the total loss; acquiring frequency trajectory data output by grid-following and grid-connected equipment; and training the deep Koopman model; and obtaining the frequency prediction results based on the trained deep Koopman model. This invention can replace full-order electromagnetic transient simulation for rapid analysis in large-scale scenarios, improving computational efficiency.

The application discloses a kind of water conservancy structures cloud three-dimensional collaborative reinforcement design method based on space surface and space line, comprising: according to the characteristics of water conservancy structures complex concrete structure three-dimensional model, construct the geometric modeling device of supporting heteromorphous structure surface, space line analysis and editing;Based on cloud architecture, construct server and browser client, realize cloud three-dimensional collaborative modeling and design environment using communication technology;Define the operating object of three-dimensional reinforcement;Based on structure entity space surface reinforcement, through the constraint of reinforcement direction, the start point of reinforcement area, and offset structure entity surface protective layer distance to construct reinforcement;Based on structure entity space line reinforcement, through the constraint of structure entity space surface, reinforcement path and the start point of path, and offset structure entity line specified distance to construct reinforcement.The application provides a new design method for design engineer by complex space surface, space line based on cloud three-dimensional collaborative reinforcement of arbitrary structure.

The invention discloses a self-check error code multicast system based on SpaceWire, a routing table comprises a group of self-adaptive registers, and each register can request a bit to determine a data packet sending SpaceWire port arbitrated by a logic address; the multicast register group plays a role in configuring the multicast of the SpaceWire ports 2-n; the data packet backup module is used for backing up data packets sent each time and making preparations for subsequent error code calculation; the SpaceWire data receiving error counter group plays a role in counting the quantity of error data at a destination port when the destination port has an error; the bit error rate calculation module cooperates with the SpaceWire data receiving error counter group and the data packet backup module and is used for calculating the bit error rate of each packet of data; the SpaceWire port for receiving the data packet comprises one port, and the SpaceWire port for sending the data packet comprises 2-n (nlt; and the number of the ports is equal to 31. The functional system is based on multicast, is efficient and practical, and can automatically detect the bit error rate of a data packet in real time in the SpaceWire multicast data transmission process.

The present application belongs to the technical field of space-borne synthetic aperture radar, and particularly relates to a space-borne SAR scene matching curve imaging electromechanical collaborative wave control optimization method based on Bernstein polynomial. Aiming at the problem that the mechanical scanning angle and its angular velocity, angular acceleration and endpoint constraint are difficult to meet throughout the whole process, and are difficult to approach the ideal beam pointing under the constraint, the ideal beam pointing three-axis angle sequence and the mechanical scanning / electric scanning constraint are obtained, the mechanical scanning three-axis angle is parameterized by Bernstein basis function, the linear mapping of the angle and its first and second derivatives and Bernstein coefficients is established, and the above mechanical scanning constraint is uniformly converted into coefficient space linear equation / inequality constraint to form a convex feasible region, and the mechanical scanning sequence is solved by minimizing the fitting error in the 2-norm or infinite norm; then, the distance and azimuth electric scanning angle sequences are calculated according to the electromechanical geometric relationship, the control instructions generated are sent to the attitude and antenna control system, and are used for scene matching imaging beam scanning.

The invention discloses a light-weight binaural speech enhancement method based on a Fourier network, which recovers pure speech from a noisy binaural signal through a light-weight deep complex network architecture. The method comprises the following steps: firstly, generating robust acoustic representation by utilizing a double-path feature coding and fusion module and combining short-time Fourier transform features and psychoacoustic-based Gammatone features; then, through a global adaptive Fourier modulator backbone network, a long-time-sequence context is efficiently modeled with extremely low calculation cost, and meanwhile, phase information is kept through a real number gating mechanism; and finally, performing intelligent correction on an enhancement result through a dynamic optimization gate. According to the method, a long time sequence dependence modeling task is converted into a Fourier domain adaptive filtering process, so that the speech enhancement performance and the spatial clue fidelity are maintained, the model parameter quantity and the calculation complexity are reduced, and the problem that the performance and the efficiency of resource-constrained equipment are difficult to consider at the same time in the prior art is solved.

The device comprises a mother board, a serial port, a programmable power supply interface, an SPI (Serial Peripheral Interface), a CAN (Controller Area Network) bus interface, a 1553B bus interface, a Spacewire interface, a PCIE (Peripheral Component Interface Express) interface, a mother board slot, a network port, a daughter board, a microprocessor, a DDR (Double Data Rate) clamp, a Flash, an SD (Secure Digital) card slot, a test computer and a daughter board slot. The device provided by the invention can be used for evaluating the suitability of the operating system of the microprocessor in the aerospace high-reliability field, and can be used as an evaluation platform for key performances such as task management, memory management and time management when the selected microprocessor operates the operating system in an aerospace application scene; the method can be used for evaluating the suitability index of the operating system of the aerospace microprocessor in a full temperature range.

This disclosure discloses a method, apparatus, device, storage medium, and program product for drawing spatial lines, relating to the field of computer technology, and particularly to the field of intelligent transportation. The specific implementation scheme is as follows: based on the three-dimensional coordinates of the endpoints of the line to be drawn and the mesh partitioning information of the spherical space, the mesh encoding information of the endpoints is determined; based on the mesh encoding information of the endpoints, a spatial line including the endpoints is drawn in the spherical space. The technical solution of this disclosure improves the efficiency and quality of spatial line drawing.

The embodiment of the application provides a space line position calculation method, a movable robot and electronic equipment, which are applied to the field of information technology, can obtain at least two image frames; a first line segment corresponding to a target space line in a first frame of two target image frames is subjected to coordinate feature extraction; a first grid region matched with the first line segment is identified according to the coordinate feature of the first line segment; a second grid region in a second frame of the two target image frames corresponding to the position of the first grid region in the target image frame is identified; the coordinate features of each line segment in the second grid region are identified, and the coordinate feature of the first line segment is matched with the coordinate features of each line segment in the second grid region to obtain the coordinate feature of a second line segment matched; and the space position of the target space line is calculated according to the coordinate feature of the first line segment and the coordinate feature of the second line segment. Thus, the calculation amount of the matching process is reduced, and the matching efficiency is improved.

The invention relates to a device (20) for enabling verification of the signal quality of a Space Wire connection, wherein the device (20) comprises a first 9-pin MicroD PCB connector (10) and a second 9-pin MicroD PCB connector (12), wherein the first 9-pin MicroD PCB connector (10) has a contact pin side with pins (1-9) and a second side with PCB contacts, wherein the second 9-pin MicroD PCB connector (12) has a MicroD socket side and a second side with PCB contacts, wherein at least one common PCB (14) is arranged between the two 9-pin MicroD PCB connectors (10, 12), wherein the two MicroD PCB connectors (10, 12) are each connected to the PCB (14) via their PCB contacts, and wherein the two MicroD PCB connectors (10, 12) are connected to each other via conductor tracks (15) on the circuit board (14),wherein the conductor tracks (15) are connected to contact points (16).

This application discloses a positioning information determination device, vehicle, method, and program product, relating to the field of positioning technology, for quickly, robustly, and with high precision determining positioning information. This application obtains each first line segment contained in an image and its planar line features, and obtains each second line segment contained in point cloud data and its spatial line features. Each second line segment is projected onto the image, and the second line segment equation parameters of each projected second line segment are determined. For each second line segment, based on the standard deviation between the second line segment equation parameters of the second line segment and the first line segment equation parameters of each first line segment, a first matching line segment is determined. Based on the spatial line features of the second line segment and the planar line features of the first matching line segment, first comprehensive feature information of the first matching line segment is determined. Positioning information is determined based on the first comprehensive feature information, enabling quick, robust, and high-precision positioning information determination.