38results about How to "Realize seamless access" patented technology

The invention discloses an instant messaging communication method based on a Websocket protocol. The instant messaging communication method based on the Websocket protocol comprises the following steps: adding the Websocket protocol and a message queue service HornetQ between a network communication layer and a business logic layer to start message transmission, using network based on an open source to process a webbit frame of a netty frame and to provide a basic service of the websocket protocol, after the success of a websocket handshaking protocol, a client side is linked with a service establishing network, sending authentication logging information, after successfully authenticating, a service end starts the message queue service HornetQ, and adding logging users of the client side to a waiting for conversation queue to wait for activation of the messages. After receiving the activated messages, the messages are returned to the client side through the websocket protocol.

The invention relates to a protection method of a power distribution network for a coal mine. The protection method comprises the following steps of: if any section in the power distribution network is subjected to short circuit, respectively tripping the main protection detection fault outlet of a superior switch closest to a fault section, if failure current still exists after the inherent action time of a main protection tripping fault switch, showing that the fault switch refuses operating; and then tripping the intelligent backup protection direct outlet of a superior switch adjacent to the fault switch, and removing the fault. The method has the following beneficial effects: the current conditions of circuits in all levels are judged, thereby ensuring that backup protection of the superior protection drives tripping without time delay when a switch cabinet in each level refuses operating, effectively shortening the protective fault removal time of the superior switch when the fault switch refuses operating, being conductive to removing the fault rapidly, and being conductive to the safety of the whole power distribution network.

The invention discloses a sensor network based mobile construction truck intelligent monitoring device which comprises a construction truck mobile monitoring device and a construction site information chip. Information interaction between active chips arranged at a gate of a construction site and an exit and entrance of a car wash and an identity identifier mounted in a truck is performed to collect identity information of vehicles coming in and going out and information of whether vehicles are washed or not. By using the sensor network based mobile construction truck intelligent monitoring device, problems of the prior art are solved, data inquiry of illegal behaviors such as overloading, overspeeding, driving without cleaning, illegal toppling of construction trucks can be effectively realized, and administrative law enforcement linkage can be performed by timely pushing to related responsible authorities, so that law enforcement efficiency of grassroots monitoring is improved, and grassroots meshing and refined management capabilities are enhanced.

According to the centralized monitoring platform of the spacecraft ground measurement and control station resource pool architecture disclosed by the invention, the resource utilization rate of the satellite ground measurement and control station can be effectively improved. The invention is realized through the following technical scheme: monitoring software constructs resource pools for digitalization, signal processing, baseband processing and storage functions respectively, establishes a binding relationship of process services, takes a result of resource scheduling and resource allocation as input, and schedules customer services based on task-driven dynamic resources; after the business service module carries out coarse-grained division on services, all the services are organized in different servers through a service management deployment tool, all the service particles communicate through defined interfaces, and the centralized monitoring platform defines a resource scheduling strategy in a unified mode based on a resource recombination strategy preset in a station, so that measurement and control tasks and equipment resources are distributed, and a flow operation closed loop and an exception handling closed loop of full services from task preparation to task execution to task end are completed.

The invention provides an SNMP-based transmission network unified network management system, belongs to the technical field of power communication network management, and specifically relates to an SNMP-based transmission network unified network management system. The invention provides an SNMP-based transmission network unified network management method to well shield underlying transmission protocol differences. The method includes following steps: step 1, a management station sends a control data packet, employing an SNMP management protocol, and performs transmission through a non-connection-oriented UDP; step 2, a request queue receives the control data packet from the management station; step 3, protocol analysis is conducted on the received data packet, and a communication protocol stack, a management information model and a network management protocol type are obtained and stored in an information base; and step 4, a sub-agent module is delegated to collect and analyze information of managed equipment, the information is stored in a data processing module, and the protocol type of the managed equipment is recorded in the processing module of the management information model.

The invention relates to an automatic control system accessed to an automatic isomerous controller. The automatic control system is characterized by comprising an isomerous controller terminal and a central control room, wherein the isomerous controller terminal is provided with a client driver based on an OPC agreement, a communication channel is arranged between the isomerous controller terminal and the central control room, the isomerous controller terminal is provided with an interface which is connected with the communication channel, the data communication of the isomerous controller terminal and the central control room is carried out as an Modbus agreement which is Modbus agreement expansion, and 16 bit device addresses are arranged in the Modbus agreement. The system solves the problem of insufficient quantity of the device addresses in the same Modbus communication network and realizes that isomerous controllers supplied by different manufacturers carry out data communication with the central control room by the same communication channel. The invention also relates to the application of the automatic control system in oilfield automation.

The invention designs and realizes a modular cross-platform SDK which supports IGRS and UPnP protocols, has strong expandability and configurability and is easy to multiplex by studying the standards of the IGRS and UPnP protocols, analyzing the generality of digital media adapter (DMA) products and combining the current shared design scheme of digital home media. Based on the SDK, the application developers can effectively multiplex related modules provided by DMA-SDK and concentrate on interface development and development of related modules meeting special requirements, thus improving the development efficiency of DMA application and production speed.

The invention relates to equipment based on a VPN technology and a method and system for remotely maintaining a PLC. The equipment based on the VPN technology has the characteristic of rapid deployment, is of a plug-and-play type, and can realize remote maintenance of the PLC only by informing technicians of equipment ID numbers and IP addresses of the PLC by field personnel and matching the technicians with remote client software. The equipment does not need to be configured, and if a field local area network does not have the capability of accessing the Ethernet, the equipment can access anoperator network and is connected with a VPN server to establish a virtual tunnel. According to the invention, seamless access can be realized efficiently and quickly without changing the original network environment; automatic connection can be achieved without complex configuration, the technical requirements for field personnel can be reduced, and simplicity and convenience are achieved; through the scheme, technicians can quickly troubleshoot problems, so that user requirements are met, and the problem of pain spots of users is solved.

The invention provides an access method and device for a unified label library, and belongs to the technical field of big data, and the access method comprises the steps: generating unified label directory metadata and unified label definition metadata in a unified label directory tree according to a label file of at least one system; associating the service data corresponding to the unified labeldefinition metadata with the unified label definition metadata to obtain unified label service data in the unified label directory tree; generating a unified label directory tree according to the unified label directory metadata, the unified label definition metadata and the unified label service data, the unified label directory tree comprising sub-trees corresponding to each system; and establishing a unified label library containing the unified label directory tree. Label unification can be realized, real-time analysis of Internet access behavior data of a user is realized, and business and product marketing efficiency and accuracy are improved.

The invention discloses a distributed fault diagnosis system and method for a power transmission line. The distributed fault diagnosis system comprises a monitoring terminal, a front server and a central station server. The central station server comprises a communication micro-service unit, a core micro-service unit and a fault distance measurement micro-service unit; the front server receives the data message sent by the monitoring terminal and stores the data message in a database; the communication micro-service unit reads the data message from the database and forms a file; the core micro-service unit receives an interaction message sent by the communication micro-service unit, finds out a corresponding fault distance measurement micro-service unit based on ID information in the interaction message, and sends a file obtained from the communication micro-service unit to the fault distance measurement micro-service unit; and the fault distance measurement micro-service unit completes fault diagnosis based on the received file. According to the invention, the system access time of fault distance measurement terminals (namely fault distance measurement micro-service units) of different manufacturers can be greatly shortened, and the operation and maintenance efficiency is improved.