10 results about "Power line network" patented technology

This invention provides a power line carrier intelligent distribution network method, device, and handheld terminal. The distribution network method includes the following processes: S1, network discovery to obtain a list of all node IDs; S2, synchronous broadcast phase, the master control node polls and broadcasts; S3, node execution process: when acting as a broadcast source, it sends a probe signal; when acting as a listener, it records the signal quality to a local list; S4, distributed voting, where each node autonomously selects the node with the best signal as the cluster head; S5, cluster head reporting, where all nodes report the selected cluster head ID to the master control; S6, global decision, where the master control counts all reported cluster head IDs and announces the node with the most votes as the final gateway. This invention utilizes the existing power line network as a data transmission carrier, automatically senses the line environment, and adaptively forms a network. Simultaneously, through point-to-point NFC interaction between the handheld terminal and the device, it achieves zero-configuration, accurate, and reliable parameter writing and identity authentication.

The invention discloses a 5G ship confined space communication system and method, and the system comprises a 5G signal access unit, a power line communication unit and a cabin terminal communication module, the 5G signal access unit is disposed on a deck, receives a private network 5G signal through a 5G CPE, converts the 5G signal into IP data, accesses the ship power line communication unit through a gateway, and communicates with the cabin terminal communication module through the power line communication unit. The power line communication unit modulates IP data into high-frequency signals and superposes the high-frequency signals on a power line by using an original alternating-current power supply system of a ship, the cabin terminal communication modules are deployed in cabins, receive signals of the power line communication unit and restore the signals into standard IP data, and the standard IP data are used by terminal equipment through local area WiFi, so that 5G service access in cabins is realized; according to the 5G ship confined space communication system, the original power line network of the ship serves as an information transmission medium, 5G signals are transmitted to all cabins in the ship from the deck, efficient and reliable communication coverage is achieved, and the 5G ship confined space communication system is suitable for various application scenes such as intelligent ships, remote monitoring and Internet of Things equipment connection.

The invention relates to a power line communication network topology reconstruction method and device for single-port missing. The method comprises the following steps: receiving and transmitting a preset detection signal through a plurality of known tail ports in a power line network, determining the distance between the plurality of known tail ports according to a signal transmission moment and a signal first arrival moment, and constructing an initial topology network according to the distance; receiving and transmitting virtual signals through a plurality of virtual ports of the initial topology network, and determining the position of an unknown branch point according to the signal difference between a real signal and the virtual signals; receiving and transmitting virtual swept-frequency signals through a plurality of known tail ports and a plurality of virtual ports, and determining an unknown branch length according to a signal difference between a real swept-frequency signal and the virtual swept-frequency signal; and updating the initial topology network according to the position of the unknown branch point and the unknown branch length to obtain the topology network of the power line network. The power line communication network topology can be accurately reconstructed under the condition of single-port missing.

The application provides a data transmission method and device and a storage medium, relates to the technical field of communication, and is used for solving the problem of high cost of data transmission in general technology. The method can be applied to a target node. The target node is any node in a power line network. The method comprises the following steps: in the process of obtaining target data, the target node can obtain a data packet transmitted by a neighboring node through a power line. The data packet comprises to-be-transmitted data and routing information. When the routing information meets a preset routing rule, the target node determines the to-be-transmitted data as the target data.

This application relates to a method and apparatus for topology reconstruction of power line communication networks with a single port missing. The method includes: transmitting and receiving preset detection signals through multiple known end ports in the power line network; determining the distance between the known end ports based on the signal transmission time and the signal arrival time; and constructing an initial topology network based on the distance; transmitting and receiving virtual signals through multiple virtual ports in the initial topology network; determining the location of unknown branch points based on the signal difference between the real and virtual signals; transmitting and receiving virtual frequency sweep signals through the multiple known end ports and multiple virtual ports respectively; determining the length of unknown branches based on the signal difference between the real and virtual frequency sweep signals; and updating the initial topology network based on the location and length of the unknown branch points to obtain the power line network topology. This method can accurately reconstruct the topology of a power line communication network under conditions of a single port missing.

The invention provides a ship navigation signal lamp control system and method, and belongs to the technical field of ship electrical control, and the system comprises a control unit which is used for determining the navigation state of a ship, and generating a control instruction of a target lamp combination according to a pre-stored collision avoidance rule mapping table; the adaptive communication unit is connected to the control unit and a power line network of the ship, and is used for selecting a target power line carrier modulation mode according to the communication quality parameters of the power line network, and transmitting a control instruction through the power line network based on the target power line carrier modulation mode; the at least one intelligent lamp terminal is in communication connection with the self-adaptive communication unit and the control unit through a power line network and is used for receiving and executing the control instruction through the power line network, detecting state information of the corresponding lamp in real time and feeding back the state information to the control unit through the power line network; wiring simplification, intelligent control and state monitoring can be considered, and the ship navigation safety and maintenance efficiency are improved.

The invention provides an intelligent household equipment control method and system based on power line carrier communication, and belongs to the technical field of intelligent household control, a power line carrier gateway and a three-phase converter cooperate with an intelligent control terminal to control the whole household equipment, and a local wireless communication module and a power line carrier module are equipped for transmission and control of the household equipment. Power line carrier modules between terminal devices in different rooms are matched with power lines to transmit control signals, the system has the advantages of being high in anti-interference capacity and reliability of a wired system, the control signals are only transmitted between the devices in the same room through wireless Bluetooth, voice, infrared and other modes in the local wireless communication module, control is sensitive, and the system is convenient to use. When the whole system is installed, an existing power line is used as a communication trunk, no control bus needs to be additionally arranged, seamless coverage of a whole house power line network is achieved through access of the three-phase converter, the user experience degree is greatly improved, the assembling and installing cost is saved, and the intelligent home control efficiency is improved.

The invention discloses a power line communication network troubleshooting method and device, and the method comprises the steps: enabling a portable HPLC (High Performance Liquid Chromatography) fault diagnosis instrument to be connected into a to-be-detected power line network, and obtaining a source end equipment identifier and a network identifier of a current network node; sending a carrier request message carrying the reading instruction to a target ammeter through the source end equipment identifier and the network identifier; receiving a response signal fed back by a target ammeter for the carrier request message, and extracting a received signal strength indication and signal-to-noise ratio data from a physical layer data frame of the response signal; and comparing the received signal strength indication and the signal-to-noise ratio data with a preset communication quality threshold, if the received signal strength indication and the signal-to-noise ratio data are lower than the preset communication quality threshold, determining that a line attenuation fault occurs, and displaying a diagnosis result containing a fault type on an interactive interface of the diagnostic instrument. According to the method, the line attenuation fault can be automatically detected, the fault diagnosis accuracy and efficiency are improved, and high real-time performance and reliability are achieved.

The invention relates to the technical field of intelligent power grid equipment, and discloses a positioning method and device based on dual-mode communication and electronic equipment, hierarchical positioning is realized by fusing power line carrier communication (HPLC) and a Bluetooth technology, room-level coarse-grained positioning is provided by utilizing an inherent topological structure of a power line network, sub-meter-level accurate positioning is realized by combining the Bluetooth technology, and the positioning accuracy is improved. According to the invention, the hybrid positioning effects of low deployment cost, high precision, time synchronization and strong anti-interference capability are achieved, and the special requirements of power industry scenes are met.

The present disclosure provides a system and method for supplying power to consumers in an electrical power line network. The system provides automated integration and networking logic for electrical assets. Further, the system provides consumer indexing in an electrical power-line network and facilitates an integrated drive and drone sensor data collection system for surveying and mapping service providers and consumers. The system generates virtual ground control points (GCP's) to form models of an electrical power-line network or grid extending from power generation sites to the end consumer sites.