43results about How to "Realize network communication" patented technology

The invention discloses a virtual machine system and the corresponding communication method thereof, wherein, a virtual machine monitor in the virtual machine system comprises a data packet processing module at the virtual machine monitor end which is used to receive data packets with a source IP address and a target IP address as a first IP address and a second IP address respectively from a service operating system or a client operating system, and also used to transmit the data packet to a receiver according the only communication channel corresponding to the second IP address after the source IP address and the target IP address of the data packet are exchanged. The invention can realize normal network communication among a plurality of OS which uses a same IP address and is not affected by the change of the name or the IP address of the OS. The invention not only solves the problem that different virtual machines using the same IP address cannot communicate with each other, but also replaces an IP address with a specified name, so as to be easier to remember and use.

The invention discloses a network video recorder (NVR) and an automatic IPC (Internet Protocol Camera) access method thereof. The NVR comprises a device discovery module, a network configuration module and a configuration management module. The method comprises the steps: sending an ARP (Address Resolution Protocol) broadcast message, and receiving response messages fed back from all IPCs, wherein the response messages carry own IP (Internet Protocol) addresses of the IPCs, subnet masks and port numbers; judging whether the IP address of each IPC sending the corresponding response message and the IP address of an own network card of the corresponding IPC are located in the same network segment or not according to the received IPC response messages, and going to next step if the IP address of each IPC sending the corresponding response message and the IP address of the own network card of the corresponding IPC are located in the same network segment; adding a virtual IP address, which is located in the same network segment of the IP address of each IPC sending the corresponding response message, to the own network card of the corresponding IPC if the IP address of each IPC sending the corresponding response message and the IP address of the own network card of the corresponding IPC are not located in the same network segment, binding the corresponding IPC and the added virtual IP address to the corresponding own network card, and going to the next step; adding corresponding IPCs in a unicast mode. According to the NVR and the automatic IPC access method thereof, the access of the IPCs which do not support IP modification is subjected to IP removal, and the IPCs and the NVR can be in interconnected use in a zero configuration manner.

The invention discloses an underwater auxiliary oil recovery control system and a dynamic positioning method thereof. Focusing on an uncertainty problem that a motion of the underwater auxiliary oil recovery robot is interfered by ocean current, combining the manufactured underwater auxiliary oil recovery robot, the invention establishes a dynamical model based on a fluid dynamic numerical simulation identification parameter method and performs six-degree-of-freedom dynamic positioning analyzing. A position and a heading of the underwater auxiliary oil recovery robot are obtained by a sensor;a state of the underwater robot is estimated in real time by adopting an adaptive unscented Kalman particle filtering algorithm based on a hybrid genetic algorithm-Markov chain Monte Carlo method (GA-MCMC); a fast terminal reaching law is introduced into a non-singular fast terminal sliding mode control to compensate thrust, so that influence caused by interference such as the ocean current is reduced; and then a force and torque distribution strategy is designed according to a positioning error. The method has a good dynamic positioning effect, and can quickly adjust the dynamic distributionstrategy after being interfered in order to reduce the interference impact caused by random ocean current.

The new type of portable multimedia storing and broadcasting terminal equipment is accessed directly into electronic network by means of wired or wireless access technology, and performs broadcast of multimedia information and treatment of data file in on-line download mode. It has itself network connection and communication interface for connection to electronic network and receiving multimedia and data file. The storing device can maintain the received multimedia and data file in the storing medium, the multimedia and data processor completes the treating operation of multimedia and data file, and the output device outputs multimedia and data file.

The invention discloses a lamp positioning method based on an urban lighting intelligent management system. The system comprises a remote cloud-side server, a LORA terminal arranged on the lamp, and LORA-to-NB_IOT gateways for converting a LORA network into a NB_IOT network to realize the network communication; the lamp positioning method comprises the following steps: S1, taking a lamp needing tobe positioned as a positioning center, selecting the LORA-to-NB_IOT gateways around three positioning centers, acquiring the longitude and latitude information of three selected LORA-to-NB_IOT gateways; S2, computing the distance between the positioning center and each of three LORA-to-NB_IOT gateways; and S3, computing the longitude and latitude of the positioning center according to the longitude and latitude information of three LORA-to-NB_IOT gateways and three pieces of distance information computed in the step S2. Compared with the prior art, the condition that the lamp location cannotbe determined through a GPRS when the signal is bad at the remote location or the indoor underground park is effectively solved, and the method has the beneficial effects of being high in positioningaccuracy rate, strong in generality and low in cost.

A distributed network-based scene surveillance radar redundancy control system disclosed by the present invention is equipped with a radar assembly, an Ethernet switch and a radar terminal. In order to enable the radar assembly to purposively and respectively select one of two servo controllers, one of two transmitter controllers, one of two receiver controllers, one of two distribution extension controllers, one of two signal processing controllers, one of two data processing controllers and one of two digital power supply controllers which have different types to from a main body frame, all controllers and the radar terminal are connected with the Ethernet switch as the nodes of the distributed network and are controlled by the distributed node control units respectively, thereby forming the distributed network. The distributed network adopts the distributed network topology structures as the star structures, and in the distributed network, the priority of the radar terminal is highest. The distributed network-based scene surveillance radar redundancy control system of the present invention has the characteristics of being simple and reliable, and being strong in extensible capability and flexible in redundancy switching control mode.

The invention discloses an access control method of an administrative information system based on data sharing and exchange. The administrative information system comprises a cloud data sharing center, a data management platform, a data warehouse, a senior government platform, an intermediate government platform, a primary government platform, a branch office platform and a client, the data management platform, the senior government platform, the intermediate government platform and the primary government platform all interact with a cloud data sharing center, the senior government platform, the intermediate government platform and the primary government platform are all connected with the data management platform, and the data management platform is connected with the data warehouse. According to the access control method, the established sharing and exchange platform achieves the collaborative processing, information flow and information sharing among citizens, governments and government departments at all levels, realizes network communication, data communication, and business communication, solves the problem of repeated establishment and system complexity of all levels of administrative systems, reduces the waste of resources and greatly reduces economic losses; and the data processing efficiency is high.

The invention discloses a communication connection method, device and system. The communication connection device is a prepositive server used for realizing communication among a user side, an eSIM card and an operator platform. The prepositive server comprises an information management module, a safety management module and a connection management module. The information management module is usedfor providing user information management service; the safety management module is used for providing and managing card initial authentication key management service, is responsible for managing cardend connection safety control and safely storing user identity information and card basic information; and the connection management module is used for providing connection of a user side, an eSIM card and an operator platform, and is used for receiving data, packaging data according to different LPA protocols and sending the data. By adopting the technical scheme of the invention, the network communication between the eSIM card and the operator platform can be realized on the premise of not changing the existing terminal.

The invention discloses a method used for on-chip inter-core network communication of a multi-core processor, comprising the steps of: 1) setting different MAC addresses for different cores, and adding a corresponding filtering rule to a network driver; 2) setting different IP addresses for the different cores by using a set of specific rules, so as to judge whether a destination address of a datapackage belongs to addresses of on-chip other cores or off-chip addresses when the data package is transmitted by a certain core; and 3) adding the judgement to the network driver, firstly analyzingthe destination address of the data package before the each data package is transmitted, and executing different operations according to whether the destination address belongs to the on-chip addresses or the off-chip addresses. Through adoption of the method of the invention, on-chip inter-core network communication of the multi-core processor is achieved, so that network communication of the multi-core processor can not be limited by connection failure in on-chip inter-core network, and a network standard interface can be adopted to perform communication; in addition, a user can achieve theon-chip inter-core network communication without additional processing during programming, thus the method is transparent to the user.

The invention relates to a method for realizing network connection based on bidirectional NAT of a proxy node. The method comprises the steps of receiving an access request transmitted by a client, and obtaining an initial source address and a proxy destination address in the access request; performing DNAT conversion and SNAT conversion on the access request, and respectively converting the proxydestination address and the initial source address into an actual destination address and a proxy source address; sending an access request to the server based on the actual destination address and the proxy source address, wherein the proxy source address is a port address for data interaction with the server in a proxy server. The proxy server compatible with DNAT and SNAT is introduced as a connection bridge between two independent subnets, so that any node (i.e., a client) in the two independent subnets can access any node (i.e., a server) in the other subnet, and a multipoint-to-multipoint networking scheme of two intranet is realized.

The invention discloses a cloud variable operation method in a graphical programming tool, and an electronic device. The method comprises the following steps: A. after a compiling program is started,establishing, by a terminal device, a communication connection with a cloud server; B. when a cloud variable is set by a browser of the terminal device, synchronizing a setting condition to the cloudserver; and C. when the compiling program is started again, reading, by the terminal device, the corresponding cloud variable from the cloud server. In the cloud variable operation method disclosed bythe invention, a player can store the data generated in the program in the cloud in real time, and by storing the data, the network communication between different devices can be realized, and the game playing method and the program type for writing the program are expanded.

The invention belongs to an intelligent measurement and control module and specifically relates to an intelligent measurement and control module applied to a ground DC power supply. The module includes a one-chip microcomputer used for calculation. The one-chip microcomputer is connected with an external signal conditioning circuit electric signal through an AD conversion function. The one-chip microcomputer is connected with an external keyboard input circuit through a keyboard input function. The one-chip microcomputer is connected with a liquid-crystal display driving circuit through a display function. The one-chip microcomputer is connected with a power module circuit through a power control function. The one-chip microcomputer is connected an external alarm circuit through an alarm judgment function. The one-chip microcomputer is connected with an external RS422 interface circuit through a serial port. The one-chip microcomputer is connected with an external Ethernet interface through a network communication function. The one-chip microcomputer is connected with an external storage calling module through a storage calling function. The beneficial effects of the module are that the intelligent measurement and control module applied to the ground DC power supply is capable of satisfying independence of a ground power supply and use of access networks and meeting short range and remote control and power supplying demands of a ground measurement and control system.

The invention discloses an intelligent management system for pledge files. The system includes a server, a packaging system, a handover system and a warehouse management system, the encapsulation system comprises a client computer, a high-speed scanner, a packaging area card reader and a file bag with an RFID tag, and the handover system comprises a handover area computer, a display, a camera, a handover area card reader, an identity card reader, a fingerprint identifier and a face identifier, the warehouse management system is composed of an internet access 485 converter and a plurality of intelligent storage cabinets, and the intelligent storage cabinets are connected with the server through the internet access 485 converter, and a power supply module, a 485 communication circuit, a system program control circuit, an electric control lock control circuit and a plurality of unit components are arranged in each intelligent storage cabinet. The system has the characteristics of identityrecognition, electronic information and image information binding and storage in a server, information comparison, video signal recording and storage in the server, online query, statistics and accurate positioning.

The invention discloses a system for achieving wire communication of no-address identification devices based on a serial port. The system for achieving wire communication of no-address identification devices based on the serial port comprises a PC, an interface convertor, a communication controller and a plurality of no-address identification devices. The communication controller comprises a single-chip microcomputer minimal system, a first level converting circuit, an address selecting circuit, an address identification circuit and a second level converting circuit. The PC is bidirectionally connected with the first level converting circuit inside the communication controller through the interface convertor, the first level converting circuit is bidirectionally communicated with a single-chip microcomputer of the single-chip microcomputer minimal system, and a first circuit of the single-chip microcomputer is in circuit connection with the level converting circuits through the address selecting circuit, a second circuit of the single-chip microcomputer is bidirectionally connected with the address identification circuit, a third circuit of the single-chip microcomputer is bidirectionally connected with the address identification circuit, the level converting circuits are in communication connection with the no-address identification devices, and the level converting circuits send received communication control signals of the no-address identification devices to the address identification circuit.

The invention belongs to the technical field of transformers and particularly relates to an electronic monitor for content of fault gas in a transformer gas relay. The electronic monitor for the content of the fault gas in the transformer gas relay comprises a gas relay, and is characterized in that the gas relay is internally provided with a gas sensor; the gas sensor is connected with a microprocessor; and the microprocessor is connected with a contact for outputting an alarming signal through an electronic relay. The electronic monitor has the beneficial effects that the content of the collected fault gas can be analyzed in real time, and signals including fault gas content increasing early warning, excessive alarming and the like are sent according to requirements; networking communication of monitored data is realized, and the transformer can be conveniently and intensively monitored; the electronic monitor has small volume, high precision, strong anti-interference capability, low power consumption and convenience for operation; and the aims that the content of the fault gas in the gas relay is remotely monitored in real time, and faults possibly happening in the transformer are found in real time are realized.

The present application discloses a self-rescue method and device for a damaged file system. The method includes: a fault warning message is sent to a background server when it is found during boot of a device that a file system is damaged; the device receives an acknowledgement message from the background server, wherein the acknowledgement message contains a path and file name of a backup version selected by the background server according to a product type; and the device downloads a version file and reboots from the version file. The device, when finding during the boot that the file system is damaged, implements network communications between the foreground and the background prior to switching to a large version, in order to acquire a version from the background server actively and reload it, so that the damaged file system is self-repaired automatically without manual interference.

The invention discloses a novel electric power electronic transformer. The novel electric power electronic transformer comprises a high-frequency transformer and electric power electronic converters, wherein the electric power electronic converters comprise an electric power electronic converter I and an electric power electronic converter II and are arranged between the high-frequency transformer and a power supply and between the high-frequency transformer and a load respectively; the electric power electronic converter I connected to the side of the power supply is used for converting power frequency alternating current on the side of the power supply into high-frequency alternating current at the input end of the high-frequency transformer; and the electric power electronic converter II connected to the side of the load is used for converting high-frequency alternating current at the output end of the high-frequency transformer into electric energy required for the load. The novel electric power electronic transformer can provide the functions such as reactive power compensation, voltage regulation, intelligent energy management and plug-and-play.

The invention relates to a movable hotspot device and a security monitoring system. The device comprises a routing module, a wireless communication module, a storage module and an Internet of Things card module. The routing module is connected with at least one monitoring device through at least one network port, and is used for allocating an IP address to the at least one monitoring device through an Onvif protocol, and acquiring streaming data of the at least one monitoring device locally; accessing a network through the wireless communication module, receiving remote connection and controlof an application program in the control terminal through a streaming media protocol, and returning streaming data to the application program. The Internet of Things card module is used for uniquely identifying the user identity information for a network to identify the user identity, and recording the networking cost on an account corresponding to the uniquely identified user identity information. The technical problems that important information is lost, maintenance is troublesome, wireless equipment is replaced, and the cost is too high due to the fact that a network cable is damaged in a traditional mode are effectively solved.

The invention discloses health detection equipment. The health detection equipment comprises a storage box body, a lifting driving mechanism and a bottom supporting mechanism. Two drawer windows are formed in the front side of the storage box body, and an instrument storage drawer and a medicine storage drawer are installed in the two drawer windows through drawer sliding rails respectively. A temporary placement groove, a function key keyboard, a number key keyboard and a microphone are arranged at the top of the storage box body. The lifting driving mechanism is stably supported by the bottom supporting mechanism. The height of the storage box body is adjusted by the lifting driving mechanism. According to the health detection equipment, the instrument storage drawer and the medicine storage drawer can be used for separately storing detection instruments and medicines, and daily use can be facilitated; by means of the function key keyboard and the number key keyboard, health detection data can be conveniently input and stored; and by means of a WiFi module, the equipment can conveniently access the network and realize the network communication with a control center.