115results about How to "Improve communication reliability" patented technology

The invention relates to the technical field of communication optimization, in particular to a wireless communication method and system of a vehicle diagnosis system. The method comprises the following steps: identifying a plurality of signal sources in an environment and three-dimensional space data of a current position of a vehicle; performing scene interference intensity comprehensive evaluation on the plurality of signal sources in the environment to obtain a current scene interference intensity evaluation value of the vehicle; environment obstacle space layout analysis is carried out on the three-dimensional space data of the current position of the vehicle, environment three-dimensional modeling is carried out, and a vehicle environment three-dimensional point cloud model is constructed; signal multi-path propagation evolution is carried out according to the current scene interference intensity evaluation value of the vehicle and the vehicle environment three-dimensional point cloud model, and optimal signal frequency band analysis is carried out, so that optimal signal frequency band parameters are extracted; and carrying out dynamic transmission frequency modulation and signal adaptive coding based on the optimal signal frequency band parameter, and constructing a dynamic signal transmission strategy. According to the invention, efficient and stable wireless communication is realized, and the vehicle-mounted communication performance is improved.

The invention relates to the technical field of network security and edge computing, in particular to a trusted asymmetric encryption communication protocol of an edge computing gateway driven by a certificate chain, which comprises the following steps of: generating node characteristic data based on edge node hardware characteristics, generating dynamic certificate chain data through edge node cooperation, and recording the dynamic certificate chain data to a block chain to form global trust data; generating global random number data in combination with the dynamic certificate chain data and a chaotic mapping algorithm, and verifying the integrity of the global random number data; generating quantum initialization vector data in combination with the global random number data and the hardware noise data, and performing block encryption on the original communication data to generate block encrypted data; a secret sharing algorithm is used to distribute a dynamic session key to a highly trusted node to ensure the security of the key; and dynamically optimizing subsequent communication parameters according to a result of decrypting the communication data. According to the method, the security, robustness and adaptability of data transmission in an edge computing scene are improved by introducing a dynamic certificate chain, a chaotic mapping algorithm, block encryption and a feedback optimization mechanism.

The invention relates to the field of multimedia communication regulation and control, and particularly discloses an intelligent scheduling type emergency command vehicle multimedia communication system which reduces the interference of the surrounding environment of an emergency command vehicle on multimedia communication by surveying the communication environment of an accident site and analyzing the suitable parking position of the emergency command vehicle. Network switching test and fault early warning are carried out on the communication equipment of the emergency command vehicle, so that the normal network communication and service are prevented from being influenced by the fault of the communication equipment; the network load of the wireless communication of the emergency command vehicle is detected in real time, and the bandwidth is dynamically adjusted and allocated according to the load condition of the network, so that the network congestion is avoided, and the stability of the multimedia communication system of the emergency command vehicle during high-load operation is ensured; the communication quality of the wireless communication link of the emergency command vehicle is monitored in real time, and the satellite communication link is switched in time when the communication quality is poor, so that the uninterrupted communication is ensured, and the communication reliability of a multimedia communication system in a complex environment is improved.

The invention discloses a CAN network optical fiber communication method supporting ring network redundancy, a ring optical fiber communication network is constructed based on a plurality of CAN network optical fiber repeaters, the ring optical fiber communication network comprises two redundancy transmission lines, in a ring network mode, all CAN network optical fiber repeaters are divided into a control node and a plurality of common nodes, and the control node is connected with the common nodes. The control node works according to a set control node working rule, and the common node works according to a set common node working rule, so that when the current transmission line works normally, data transmission is carried out on the current transmission line in a one-way transmission mode, and when the current transmission line is abnormal, data transmission is carried out on the current transmission line in a one-way transmission mode. The CAN network communication reliability is improved by constructing the redundant optical fiber ring network, and meanwhile the problems that after a traditional CAN network-to-optical fiber repeater forms the redundant optical fiber ring network, CAN data can be circularly forwarded in the optical fiber ring network in an infinite mode, network storm is generated, and network paralysis is caused are solved.

The invention discloses a data transmission method, related equipment, a storage medium and a computer product, the data transmission method is applied to sending equipment, and the method comprises the following steps: obtaining a stable state result of service data of each path in multipath data transmission; and sending the service data of each path and the stable state result of the service data of each path in the multipath channel.

The invention relates to the technical field of unmanned aerial vehicle communication, and particularly provides a communication method and system for a mooring unmanned aerial vehicle and a vehicle-mounted end, a medium and equipment, and the method can comprise the steps: monitoring whether the current communication links of the vehicle-mounted end and an airborne end are normal in communication or not; under the condition that the communication of the current communication link is abnormal, the current communication link is switched to a next communication link in a plurality of communication links for communication, each communication link in the plurality of communication links is sorted according to the priority, the communication modes of the communication links are different, and the next communication link is switched to the next communication link in the plurality of communication links according to the priority. The priority of the current communication link is higher than that of the next communication link. According to some embodiments of the invention, normal communication between the vehicle-mounted end and the airborne end can be ensured through a plurality of links.

The invention relates to the technical field of integrated energy system control, in particular to an integrated energy system monitoring control method and an operation system, data is collected in real time, data preprocessing is carried out, a distributed computing architecture is utilized, data collection tasks are dispersed to a plurality of computing nodes, and a memory carries out classified storage on the data; the database server analyzes and processes the data, and establishes and optimizes an economic operation mode optimization model SOM and a safe operation mode optimization model EOM; and the optimized control scheme model parameters are fed back to a control end in real time, the scheme parameters are analyzed and calibrated and fed back to a processor, and the processor issues a detailed operation parameter command to the energy consumption equipment, so that the energy consumption equipment adjusts the operation parameters to achieve an optimized operation state. And the data processing capability, the communication reliability and the data storage and management efficiency of the system are improved, so that the efficient, stable and optimized operation of the comprehensive energy system is ensured.

The embodiment of the invention discloses an in-vehicle machine diagnosis method based on multi-channel communication, the method is applied to an in-vehicle machine diagnosis system, and the method specifically comprises the following steps: acquiring networking information of an in-vehicle machine diagnosis instrument, and judging whether each diagnosis module in the in-vehicle machine diagnosis instrument is in a network available state according to the networking information; a diagnosis module in a network available state is selected to be added into a to-be-started sequence, and the vehicle diagnostic apparatus performs to-be-diagnosed agenda arrangement in the to-be-started sequence; acquiring vehicle-mounted machine diagnosis information of each diagnosis module, and judging whether the vehicle-mounted machine diagnosis instrument is in a diagnosis function operation state or not according to the vehicle-mounted machine diagnosis information; a diagnosis module in a diagnosis function operation state is selected to be added into a diagnosis program arrangement column, and the diagnosis module performs diagnosis agenda arrangement in the diagnosis program arrangement column; and sending an in-vehicle diagnostic repair instruction to the in-vehicle matched with the in-vehicle diagnostic apparatus. According to the method provided by the embodiment of the invention, two independent wireless communication channels are configured, so that the system has communication redundancy capability, and the communication stability and reliability in the diagnosis process are remarkably improved.

The invention provides a substrate integrated trapped wave mirror image dielectric waveguide S-shaped circularly polarized antenna, which belongs to the field of antennas and comprises an S-shaped dielectric radiator, a metalized through hole, a microstrip feeder line, a first metal grounding plate, a first dielectric substrate, a second metal grounding plate and a second dielectric substrate, the S-shaped dielectric radiator is embedded in the first dielectric substrate and located in the center of the antenna, the lower surface of the S-shaped dielectric radiator is tightly attached to the second metal grounding plate, the upper surface of the S-shaped dielectric radiator is not covered, a plurality of metalized through holes penetrate through the first dielectric substrate and are arranged on the periphery of the S-shaped dielectric radiator in an array mode, and a gap is formed in the second metal grounding plate. The microstrip feeder is located on the lower surface of the second dielectric substrate and is perpendicular to the gap. The end, away from the gap, of the microstrip feeder is connected to a feed port in the second dielectric substrate. Circular polarization is easy to realize by combining the bent dielectric structure with the slot coupling feed at the bottom, and the radiation efficiency of the antenna is improved by using the notch mirror image structure in the antenna design.

Embodiments of the present application provide a message consistency transmission method and device of a communication group and a storage medium, and relate to the technical field of device queuing. The method comprises: receiving a message package carrying a target message sent by a sending end node in a target communication group; parsing the message package to obtain a current round identifier and a message sequence number corresponding to the target message; and in response to the current round identifier being the same as a local round identifier, determining a message sequence position of the target message in the current round according to the message sequence number. The method replaces physical clocks with round identifiers and message sequence numbers to sort messages, and when a clock jump occurs in a terminal in a satellite communication environment, a receiving end node can determine a round to which a message belongs according to a comparison result of a current round identifier and a local round identifier, and then determine a sequence position of the message in the current round according to a message sequence number, so that the consistency of message sequences of nodes in a group can be ensured without relying on physical clocks, and the reliability of group communication is improved.

The utility model discloses a remote real vehicle test system for a nitrogen-oxygen sensor, which belongs to the technical field of sensor test and comprises a nitrogen-oxygen sensor test mechanism, an installation protection assembly, a server and a mobile terminal, and the nitrogen-oxygen sensor test mechanism is installed on a vehicle through the installation protection assembly. The nitrogen and oxygen sensor testing mechanism is in wireless connection with the server, the server is in wireless connection with the mobile terminal, all detection data are received through the signal conversion assembly and transmitted to the CAN bus-to-4G equipment, the CAN bus-to-4G equipment transmits CAN bus data to the server through a 4G network, and therefore remote monitoring is achieved; and the GPS positioning device converts the position information of the vehicle into a CAN bus format through an RS485 interface to a CAN bus, and finally sends the position information in a 4G signal form, so that the overall communication reliability of the system is improved, the test distance is increased, and more comprehensive data is provided.

An indoor terrace type cable laying closed system comprises a plurality of subunit systems, an alternating current switch screen and a screen cabinet, subunits are arranged on the front side and the rear side of the screen cabinet at intervals and located below an indoor electrostatic floor, each subunit is divided into two layers, a weak current groove box is arranged on the first layer of a support formed by angle steel, and a weak current groove box is arranged on the second layer of the support. The second layer of the angle steel bracket is provided with direct-current strong-current groove boxes which are arranged in a staggered manner; the subunits are provided with groove boxes of the same type in front of and behind the screen cabinet, and are matched with bridge interfaces of the weak current groove boxes which are arranged at intervals. According to the utility model, the routing requirements of cables with different types and different purposes in important functional rooms of a transformer substation are met, conflicts and overlapping of different cable paths are avoided, the passing degree of various cables is improved, the communication reliability between communication equipment is improved, and the convenience of later maintenance is improved; and a more flexible double-side wiring mode is provided, and the device can be popularized and expanded to other fields.

The present application provides a layer information feedback method, receiving method, device, communication node and medium. The method receives configuration information of a first communication node; determines the layer information of the first communication node according to the configuration information; and feeds back the layer information to the first communication node.

This invention provides a wireless communication link selection method and a half-duplex communication system for selecting multiple physical wireless communication links between a transmitter and a receiver in a half-duplex communication system. Both the transmitter and receiver are equipped with switching switches and antennas. The method includes: the transmitter and receiver synchronously and sequentially switching their respective antennas into working states according to their pre-stored switching switch timing sequences; when any transmitter antenna and any receiver antenna are simultaneously in working states, a wireless communication link is formed, and each wireless communication link is traversed at least once; during the transmission period of any wireless communication link, the receiver transmits unidirectional heartbeat packets or time-division bidirectional heartbeat packets with the transmitter through the current wireless communication link; the transmitter and / or receiver that receives the heartbeat packet selects the optimal wireless communication link from the multiple wireless communication links based on the signal strength and packet error rate during the heartbeat packet transmission process.

The invention provides a PRIME protocol identification and adaptive switching method and system based on signal detection, and the method comprises the steps: monitoring effective PRIME signals in a power line environment through a physical layer protocol, detecting BEACON signals in the effective PRIME signals, identifying a current PRIME protocol version through the protocol analysis of the BEACON signals, and carrying out the adaptive switching of the current PRIME protocol version. The method comprises the following steps of: pre-storing two pieces of firmware which respectively accord with PRIME v1.3.6 and v1.4 protocol versions in an internal program storage area of the electric energy meter, calling firmware updating and self-starting related processes based on the identified versions, running the firmware of the corresponding protocol version, and realizing self-adaptive switching and running of the electric energy meter equipment in the current PRIME v1.3.6 and / or v1.4 network; therefore, the self-adaptive compatibility of the network and the equipment of the two PRIME protocol versions can be realized without manual intervention.

The invention relates to a reservoir data acquisition system and method based on a peer-to-peer looped network. The system comprises a plurality of looped network data acquisition units, an intelligent central station and a monitoring platform, each looped network data acquisition unit is used for acquiring real-time data of a plurality of sensors and is in communication connection with an adjacent looped network data acquisition unit or an intelligent center to form a peer-to-peer communication looped network; and filtering the data of the peer-to-peer communication ring network based on a dual-event triggering mechanism, the intelligent central station is used for performing consistency verification on the data of the peer-to-peer communication ring network through infinite-dimensional norm consensus filtering; uploading the data passing the consistency verification to a monitoring platform; and the monitoring platform is used for carrying out trend analysis and early warning analysis on the received data and visualizing an analysis result. According to the invention, through an annular redundant topological structure, data redundancy and link redundancy are realized, high-speed real-time response and big data transmission of the system are ensured, and reliability and consistency of system communication are improved.

The invention relates to the technical field of communication buoys, in particular to a multi-source buoy adaptive communication device and method. A satellite antenna module is arranged at the front end of the multi-source buoy adaptive communication device; one end of the sliding rod is located below the satellite antenna module, the other end of the sliding rod is connected with the instrument cabin, and the sliding rod is sleeved with the front-section shell; one end of the transducer mounting rack is mounted at one end, far away from the sliding rod, of the instrument cabin, and the other end of the transducer mounting rack is connected with an acoustic transducer of the underwater acoustic communication module. Through software and hardware design, the multi-source buoy self-adaptive communication device can be compatible with two communication links of Beidou and Tiantong, fusion of multiple communication links and independent selection of the links are achieved, an intelligent retransmission mechanism is achieved through query feedback, and through the design that a sliding rod is additionally arranged on the structure, the water outlet posture of the buoy is stabilized, and the service life of the buoy is prolonged. The adaptive capacity of the buoy to complex sea conditions can be greatly improved, and the communication success rate and reliability under different sea conditions are improved.

This invention provides a multi-UAV sensor data acquisition trajectory planning method based on deep reinforcement learning, comprising the following steps: S1, establishing the basic framework of a UAV-assisted sensor data acquisition model in a land scenario; S2, constructing a persistent trajectory planning strategy based on an improved deep reinforcement learning algorithm according to the basic framework, and generating a UAV flight trajectory map that satisfies energy balance constraints and maximizes data acquisition value based on velocity vectors. This invention introduces a feature extraction unit module containing self-attention weight calculation to extract spatiotemporal differential features of sensor observations based on traditional multi-agent deep reinforcement learning algorithms, and combines a packet retransmission mechanism and an energy balance coefficient to optimize UAV flight energy consumption while improving the value and reliability of data acquisition. This system improves the processing efficiency of UAVs for dynamic monitoring tasks.

The application provides a vehicle-machine application method and system based on screen recognition and instruction reconstruction; including: receiving natural language operation instructions of a vehicle driver and preprocessing; combining the current position of the vehicle, the operation period and the industrial operation task context, using multi-level matching rules, named entity recognition models and local instruction templates to perform business multi-level analysis and instruction reconstruction on the instructions, identify application identifiers, instruction types, control parameters and business priorities, and construct structured business instruction objects; sending the instructions through at least two communication channels with different protocol characteristics and according to the channel health state and business priority; the vehicle-machine end selects an online or offline mode according to the network state, determines the control mode according to the analyzed instruction type, and controls the application in a multi-modal way of URI Scheme, broadcast, business message and OCR screen recognition, dynamic coordinate scaling and barrier-free service simulated clicking.

The invention discloses a TTE and standard Ethernet fusion-based full-localization solid-state power distributor. The TTE and standard Ethernet fusion-based full-localization solid-state power distributor comprises a control module, a state acquisition module, a TTE interface module and a power distribution module, wherein the control module is used for receiving a standard Ethernet power distribution instruction and analyzing the standard Ethernet power distribution instruction to obtain a power distribution module control instruction; the power distribution channel current and voltage data receiving module receives power distribution channel current and voltage data and transmits the power distribution channel current and voltage data to the TTE interface module; the TTE interface module is used for receiving a standard Ethernet power distribution instruction of an external controller and transmitting the standard Ethernet power distribution instruction to the control module; receiving the current and voltage data of the power distribution channel, and transmitting the current and voltage data of the power distribution channel to an external controller; the power distribution module receives the power distribution module control instruction and isolates and drives a power distribution channel switch according to the power distribution module control instruction; and the state acquisition module acquires current and voltage data of the power distribution channel and transmits the current and voltage data of the power distribution channel to the control module. According to the invention, the reliability and real-time performance of the communication system are improved.

The invention is suitable for the technical field of satellite communication, and provides an AI-based satellite-ground integrated unmanned aerial vehicle communication channel management method and system, and the method comprises the steps: obtaining the real-time temperature of a radio frequency front-end module of a current unmanned aerial vehicle satellite communication terminal under the condition of determining that a reference temperature node exists, and when the real-time temperature exceeds the reference temperature node, cooling measures of the unmanned aerial vehicle are controlled based on the temperature node, so that the temperature of the radio frequency front-end module is adjusted to be below the reference temperature node in a future time period. According to the method, existing communication links and cooling hardware structures are not changed, the communication stability and reliability after low-orbit satellite link switching can be improved only through control strategy optimization, the risks of short-time link falling and performance degradation are reduced, finer and more intelligent satellite-ground integrated unmanned aerial vehicle communication channel management is achieved, and the method has remarkable engineering practical value.

The invention provides a channel phase extraction method, system and device based on a preamble symbol and a pilot symbol, and a storage medium, and relates to the technical field of wireless communication of the mobile Internet of Things. The method comprises the following steps: a receiver on a gateway receives a LoRa signal sent by a transmitter of a transmitting end node; the receiver determines carrier frequency offset and window time offset according to a lead code symbol and a start frame separator in the received LoRa signal; performing compensation on the received LoRa signal to eliminate phase offset caused by carrier frequency offset and window time offset; determining a sampling frequency offset according to a spectrum peak interval between adjacent lead code symbols in the compensated signal; and performing compensation on the compensated signal to eliminate phase offset caused by sampling frequency offset so as to obtain a re-compensated signal, and determining the channel phase of the channel of the LoRa signal according to the spectrum peak phase of a plurality of pilot symbols with known coding values in the re-compensated signal.

The invention discloses a three-way orthogonal coil receiving and signal merging method and a three-way orthogonal coil receiving and signal merging system for a rotary permanent magnet mechanical antenna, and belongs to the field of magnetic induction communication. The method comprises the following steps: performing analog conditioning and analog-to-digital conversion on received magnetic induction signals in each space direction, performing Hilbert transform on digital signals in each space direction, extracting instantaneous phase information of each channel, and obtaining complex signals in each space direction; and performing amplitude and phase coherence degree estimation on the complex signals in each spatial direction, determining a weight coefficient of each spatial direction based on the coherence degree between the complex signals in each spatial direction, and combining the complex signals in each spatial direction based on the weight coefficient of each spatial direction to obtain a combined signal. The signal amplitude of a receiving end signal is effectively improved, the signal-to-noise ratio is improved, and the direction robustness and the communication reliability of the system in a complex environment are enhanced.

The invention belongs to the technical field of wireless communication, and discloses a frequency collision array signal separation method based on a channel matrix, which comprises the following steps: two radiation sources emit signals with the same symbol rate, and two antennas receive frequency collision signals according to a symbol period; establishing a convolution matrix based on a channel tap coefficient, and constructing a channel matrix according to the convolution matrix; constructing a frequency collision array signal model received by the two antennas according to the channel matrix, the sending signal sequences of the different radiation sources and the additive white Gaussian noise matrix; and carrying out pseudo-inverse on the convolution matrix in the frequency collision array signal model received by the two antennas, and separating the sending signal sequences of the two radiation sources. Based on the channel matrix, the method solves the problem that the communication is limited due to the fact that single-channel frequency collision signals cannot be demodulated independently, simplifies the calculation process of signal separation, and improves the communication reliability when the frequency is crowded.

The present invention is a spherical metamorphic robot and an environmental information monitoring system based on the robot. The robot includes a control unit, a spherical shell and a plurality of telescopic feet evenly distributed on the spherical shell. The axes of all the telescopic feet intersect at the center of the spherical shell. The telescopic feet can be extended and retracted along the radial direction of the spherical shell. All the telescopic feet can be completely wrapped in the spherical shell or extend out of the spherical shell. The system includes a self-organizing network communication module, an environmental information collection component, a host computer, a positioning module and a plurality of metamorphic robots; the plurality of metamorphic robots are arranged at various positions in the area to be detected, and each metamorphic robot is equipped with a self-organizing network communication module, a positioning module and an environmental information collection component; the self-organizing network communication module communicates with the host computer, and the self-organizing network communication module on each robot can communicate bidirectionally with the self-organizing network communication modules on the other robots. The environmental information monitoring system has three modes to realize all-weather, all-round and fully autonomous intelligent dynamic monitoring.

The invention discloses an OCDM channel estimation method based on deep learning. Firstly, an OCDM communication system is built, and a data set is generated; constructing a channel estimation model by using a convolutional neural network (CNN); inputting the data set into a neural network channel estimation model, and training the model; an Adam optimizer and a mean square error function are used for optimization to promote fitting convergence; and finally, inputting a result into an equalizer to complete signal recovery. According to the method, the precision and the accuracy of channel estimation are effectively improved, the problem of low channel estimation precision caused by a small number of cyclic prefixes and pilot frequencies is solved, and the anti-interference capability and the communication reliability of the system are enhanced.

The invention provides a communication method of a power supply system, host equipment, slave equipment and the power supply system. The method comprises the following steps: receiving a second feedback message sent by a second slave device based on an inquiry message of a host device; wherein the power supply system comprises a host device and a plurality of slave devices, and the first slave device is any one of the plurality of slave devices; the second slave equipment is slave equipment except the first slave equipment; the inquiry message is a message broadcasted by the host device to a plurality of slave devices; determining a first communication starting moment of the first slave device based on the first sequence identifier of the first slave device and the second sequence identifier of the second slave device; wherein the sequence identifier is used for indicating a message sending sequence among the plurality of slave devices; and starting to send a first feedback message of the first slave equipment from the first communication starting moment. The mode improves the communication reliability of the power supply system.

The utility model aims to provide the high-voltage cable anti-theft and anti-cutting and joint temperature measurement integrated monitoring device which is low in cost, small in size, high in protection level and capable of being flexibly configured. A single-chip microcomputer module (1) used for analog-to-digital conversion, data processing and communication control is arranged in the shell. The hardware watchdog module (2) is connected with the single chip microcomputer module and is used for automatically resetting the system when detecting that the single chip microcomputer works abnormally; the CAN bus interface (3) is connected with the single chip microcomputer module and is used for communicating with superior master equipment and subordinate similar slave equipment and providing a power supply for the monitoring device; a vibration sensor module (4) connected with the single-chip microcomputer module and used for monitoring vibration signals; a plurality of temperature measurement sensors (5) used for sensing the temperature of the cable joint; and the temperature signal conditioning module (6) is communicated with the temperature measuring sensor and is connected to the single chip microcomputer module after preprocessing the temperature analog signal. The device is applied to the technical field of power cable on-line monitoring.

The invention discloses a communication method, a communication device, an air conditioner and a cloud server, the communication method is applied to the air conditioner, the air conditioner is in communication connection with the cloud server through a network, the method comprises the steps that state data is obtained, and the state data represents operation state information and / or operation environment information of the air conditioner; a state data packet carrying state data is generated according to a preset time interval, a first serial number is added into the state data packet, the state data packet is sent to the cloud server, and the first serial number is a preset initial serial number or is obtained by adding a serial number in a previous state data packet; and when a control instruction data packet returned by the cloud server is received and it is determined that the second serial number carried in the control instruction data packet is the same as the first serial number, executing the control instruction carried in the control instruction data packet. According to the embodiment, the communication reliability between the air conditioner and the cloud server can be improved, and control logic errors caused by network fluctuation are avoided.

The invention provides a multi-master and one-slave multi-channel data acquisition method, and aims to solve the problem of communication conflict when a plurality of master stations copy and read the same slave device at the same time. According to the method, based on the Bayesian decision theory, the priority of each uplink channel is dynamically adjusted by combining important parameters in an actual communication environment, such as the communication success rate, the communication frequency and the number of master stations, so that efficient data forwarding and processing are ensured.