8results about How to "High reliability transmission" patented technology

The invention provides an inter-satellite laser data transmission method and system under background light interference, and the method comprises the steps: a satellite calculates an inter-satellite visible arc segment according to the GNSS information of the satellite and a link building satellite, generates an inter-satellite link building work task package according to an inter-satellite visible effective communication window, and forwards the inter-satellite link building work task package to a laser communication terminal; the laser communication terminal analyzes the inter-satellite link establishment work task package, completes single-machine power-up through autonomous program control, carries out scanning, capturing and tracking, and turns to an autonomous tracking stage; calculating an included angle between the background light vector and the optical axis in real time, judging whether the included angle is smaller than an autonomous avoidance angle, if so, performing autonomous avoidance operation by the laser communication terminal, and finishing a reset capturing and tracking task; if not, the satellites perform inter-satellite data transmission, the background light interference condition is judged in real time during transmission, a shutdown program is executed autonomously after inter-satellite communication is finished, and next inter-satellite link establishment transmission is waited. According to the invention, inter-satellite laser visible calculation, link establishment planning, sun-sun autonomous forecast and avoidance and autonomous program control data transmission are realized.

The invention provides a data transmission method and device and a storage medium, relates to the technical field of communication, and is used for reasonably allocating transmission resources to guarantee low-delay and high-reliability transmission of data. The method comprises: according to a transmission requirement of a target logical channel, determining transmission configuration information of the target logical channel, the transmission configuration information of the target logical channel being used for configuring a transmission resource of the target logical channel; and sending the transmission configuration information of the target logical channel to the second communication node, so that the second communication node sends data of the target logical channel on the transmission resource of the target logical channel.

The application discloses a high-reliability multi-node cooperative in-situ communication system and method. The system comprises multiple transceivers, one of which is a master node and the rest are slave nodes. The master node comprises a channel collision management and control demodulation and signal modulation unit, a digital AGC compensation control unit, a special working condition signal-to-noise ratio switching unit and a process autonomous ending unit. The slave nodes each comprise a signal transmitting unit, a signal receiving unit and a control unit. The application realizes effective screening and control of multiple access nodes in deep space exploration activities such as lunar exploration, solves the problem of advanced planning caused by a large number of nodes in the lunar near space, and maximally supports flexible communication between lunar nodes.

This invention discloses an orthogonal frequency division multiplexing (OFDM) transmission method based on dirty paper coding, belonging to the field of wireless communication technology. At the transmitting end, at least two layers of frequency domain symbols to be transmitted are generated. A first-layer OFDM signal is generated from the first-layer frequency domain symbols and non-negatively clipped in the time domain to generate first-layer clipped noise. The cumulative clipped noise from the first layer to the (h-1)th (h≥2)th layer is used as interference signal to perform dirty paper coding pre-coding on the h-th layer of the frequency domain symbols to be transmitted, generating pre-coded frequency domain symbols, and then generating the h-th layer OFDM signal. The OFDM signals of each layer are superimposed and transmitted. At the receiving end, after performing a fast Fourier transform on the received signal, the received frequency domain symbols of each layer are extracted from the received frequency domain signal and decoded independently. This invention eliminates deterministic interference between layered signals through dirty paper coding pre-coding at the transmitting end, eliminating the need for serial interference cancellation at the receiving end, avoiding error propagation problems, and significantly reducing the computational complexity at the receiving end.

The application discloses a kind of non-transparent bridge PCIe exchange circuit dynamic burn-in device and method, adopt root complex CPU, endpoint device, port mode configuration line, port interconnection bus and device state indication line, cover the physical layer of circuit, data link layer and transaction layer and non-transparent bridge address conversion and exchange function, so that circuit is carried out dynamic burn-in according to normal working frequency and bus interface rate during burn-in;The application does not need to be externally connected root complex CPU and numerous PCIe endpoint devices for each non-transparent bridge PCIe exchange circuit, and only one root complex CPU is needed on the whole burn-in board, the connection mode of root complex CPU greatly saves the cost of components on burn-in board;The application improves the density of burn-in device on the same area burn-in board because of the reduction of peripheral PCIe device, more circuits can be burn-in in the same burn-in high-temperature box, and test cost is saved.

The utility model belongs to bus communication technology, specifically relates to a CAN bus communication equipment and communication system, wherein CAN bus communication equipment includes: microcontroller module, signal isolation module, serial port data processing unit, one end is linked with microcontroller module, the other end is as the receiving end of CAN bus communication equipment, CAN bus unit, one end is connected with microcontroller module through signal isolation module, the other end is as the sending end of CAN bus communication equipment, and first input channel pin, second output channel pin of signal isolation module are connected with serial port signal sending pin, serial port signal receiving pin of microcontroller module electricity respectively, and its first output channel pin, second input channel pin are connected with CAN signal input pin, CAN signal output pin of CAN bus unit electricity respectively.

This invention discloses an IoT-based MES management system, specifically relating to the fields of industrial automation and information technology. The invention comprises a four-layer architecture: a perception layer, a network layer, a platform layer, and an application layer. The perception layer utilizes various types of IoT sensing terminals to achieve high-precision, multi-dimensional data acquisition across the entire production process. The network layer constructs a heterogeneous converged communication architecture, ensuring millisecond-level high-fidelity data transmission and enabling intelligent traffic scheduling and in-depth security protection. The platform layer integrates multiple modules to complete terminal management, data storage and processing, equipment health prediction, and digital twin visualization. The application layer, based on real-time analysis and prediction results, dynamically optimizes production scheduling and resource allocation through intelligent algorithms. This invention solves the problems of data silos, scheduling lag, and lack of predictive control in traditional MES systems, achieving full-process digitalization, visualization, and intelligence in production, significantly improving production efficiency and management level.