657results about How to "Flexible networking" patented technology

The invention relates to an intelligent traffic control system and method based on a wireless Mesh ad hoc network. The control system comprises n traffic control nodes, m ZigBee area base stations, a mobile communication base station and a traffic control center, wherein the n traffic control nodes are positioned in all intersections, and all kinds of equipment in the n traffic control nodes are connected by an RS-232/RS-485 bus; adjacent nodes realize a wireless Mesh ad hoc communication network by a ZigBee technology and exchange traffic data in real time; remote connection is carried out between each ZigBee area base station and the traffic control center by adopting GPRS/CDMA (General Packet Radio Service/Code Division Multiple Access) data transmission equipment through the mobile communication base station; and m and n are respectively integers of 1-100 and 2-256. The system organically combines an advanced ZigBee short-distance wireless communication technology and a modern intelligent network technology; and the control method of the invention adopts a self-coordinating intelligent distribution type control algorithm and can realize the optimal traffic signal control effect.

The invention discloses a method for cell-networking, which is used for realizing the flexible planning of a cell and the cell networking in various forms, and improving the availability of a frequency spectrum or saving network resources. The method comprises cell split and cell merge. The cell split method and the cell merge method comprise cell establishment and cell deletion. The cell split method comprises the following steps: calculating the occupation situations of physical resources on a plurality of antennae corresponding to the same cell; determining the physical resources occupied being not less than the prearranged threshold value continually within the prearranged time, and determining to carry out the cell split when reaching the prearranged time; splitting the same cell into at least two cells; and respectively allocating the antennae to the two cells. The cell merge method is similar to the cell split method. The invention further discloses a device, a distributed typebase station and an internal unit thereof for planning a cell.

The invention relates to a method and a system for building a big data distributed log. The method comprises the following steps that: 1, a log transmission sub system receives log data from a service system, generates a UUID (Universally Unique Identifier) for each piece of received log data, and sends the log data with the UUID to a log storage sub system through a plurality of nodes after the load balance; 2, the log storage system receives the log data, and stores the log data in a horizontal expansion mode; and 3, a mass log processing sub system extracts the log data stored in the log storage sub system, uses a MapReduce algorithm to regularly perform mass pre-processing on the log data, and generates a report by the hour and a report by the day to be required by an external service report system. The method and the system have the advantage that the requirements on the reliability, the real-time performance, the high performance, the high expandability and the maintainability of a log system under the big data condition can be met.

The invention relates to a nuclear power station DCS debugging system and a method thereof. The system comprises: a computer server, an operation terminal and a test dolly which are connected through network communication. The operation terminal is used to receive initial condition input by a user and debugging operation information and display an operation simulation result of the computer server so as to be used for DCS debugging analysis. The computer server simulates a continuous production process of the nuclear power station according to the initial condition and the debugging operation information so as to generate dynamic test data. The test data is sent to DCS equipment through the test dolly. A DCS control instruction from the DCS equipment is received and the test data is recalculated. By using the system and the method of the invention, logic preview before nuclear power units are started can be realized so as to reduce a nuclear power unit debugging and starting risk, shorten debugging construction time and save project construction costs.

The invention provides a method and a system for the fusion of multi-source monitoring data based on a heterogeneous clustering wireless sensor network. The system comprises a plurality of monitoring nodes, a plurality of cluster head nodes, a plurality of trunk nodes, a gateway node and an upper computer. The method comprises the following steps: after the gateway node switches on the upper computer, a PAN network in conformity with the ZigBee protocol is established; after the cluster head nodes and the trunk nodes are electrified, the cluster head nodes and the trunk nodes search for and join in the PAN network to form a wireless meshed network; the cluster head nodes receive broadcast packets of the monitoring nodes to carry out correlation calculation, and provide the calculation result to the upper computer through the wireless meshed network to carry out clustering processing; and then, the monitoring nodes in the cluster acquire environmental data according to the clustering result and send the data to the cluster head nodes in the cluster, and the cluster head nodes send the acquired environmental data to the upper computer through the wireless meshed network to be subjected to corresponding processing based on different sources of the environmental data. Thus, the heterogeneous clustering wireless sensor network and the wireless meshed network are combined, and the advantages of the both can be fully used for data acquisition.

The invention provides an EEG collection-based method and a system for monitoring the classroom teaching process, particularly for monitoring the fluctuation condition of students' brain waves during the classroom teaching process. The collection terminals of the system collect the brain wave data of students via brain wave sensors. After being processed and framed, the brain wave data of students are transmitted to a server from a wireless local area network by means of a WiFi module. The monitoring terminal of the system acquires data from the database of the server via the local area network and then displays the brain wave data of all the collection terminals. In this way, the individual fluctuation information and the overall fluctuation information of the collected brain wave data of students can be displayed in real time. The system can provide the real and objective reactions of students during the listening process for teachers, and can also perfectly reproduce the classroom teaching situation for teachers and teaching managers. Therefore, the system provides a real and quantitative data support for the improvement and the evaluation of the classroom training process.

The invention discloses a gateway based on a LoRa wireless technology, and belongs to the technical field of wireless communication equipment. The gateway is in a communication connection with at least one data acquiring node of an Internet of things perceptive level, and used for transmitting relevant data acquired by each data acquiring node to relevant equipment on a network layer of Internet of things. The gateway comprises a LoRa communication module, a remote communication module, a main control module and a power module, wherein the LoRa communication module is connected with each data acquiring node; the remote communication module is connected with the LoRa communication module; the LoRa communication module is connected with the remote communication module through the main control module, and used for controlling the LoRa communication module and the remote communication module; and the power module is connected with the LoRa communication module, the remote communication module and the main control module. The gateway has the beneficial effect that a LoRa wireless communication technology is adopted, and a license-free frequency band is utilized, so that free and wireless communication is realized. The gateway also has the advantages of simple installing process, no need of advanced wiring, high mobility, low communication cost, long communication distance, low power consumption and high interference resistance.

The invention discloses an analog simulation system of a complex power distribution network containing multiple voltage grades and 8 modules, which integrates the analog simulation technologies of an integrated power grid power supply, a distributed power supply, an accident, a circuit, an AC and DC power distributor, a diverse load and other analog simulation technologies, aiming at the simulated test demand of an active power distribution net technology with the characteristics of interaction and intelligence. The analog simulation system comprises 5 modules such as a power grid simulator which reflects the primary and secondary parts of a power grid, a power supply simulator, a load simulator, a control simulator and a protective simulator, further comprises 3 additional modules such as an event/detection simulator beneficial for the simulation test, an interface module, and a synchronous simulator. The analog simulation system provided by the invention comprises an integrated simulation test of steady state, transient state and multistage power distribution network including new elements such as a distributed power supply, a diversified load, an intelligent equipment/system, an automatic/information system, an AC/DC hybrid grid, closed loop operation, etc.

This invention relates to one new wireless communication network form method based on relay technique, which lowers the base station requires through setting relay station and expends its coverage range to reduce near station interference and provides sparse gains to make the next generation of wide band near one and to simplify the next generation of network design to improve system frequency spectrum rate. The technique is characterized by the following: a, relay points adopt antenna; b, in coverage range, relay point fulfills range coverage function; c, in bad area of signal quality the relay point provides one sparse gains function.

The invention discloses an energy-storage type alternating current and direct current mixed micro-grid and a control method thereof. The energy-storage type alternating current and direct current mixed micro-grid comprises an alternating current micro-grid, a direct current micro-grid, a battery energy-storage system and an energy management system EMS, which are connected with an external grid control center. The control method of the energy-storage type alternating current and direct current mixed micro-grid comprises the following steps of initializing the EMS to acquire information data of the alternating current micro-grid, the direct current micro-grid and the battery energy-storage system; acquiring information data of an external public grid in real time; regulating and controlling the alternating current micro-grid, the direct current micro-grid and the battery energy-storage system according to the acquired data. The energy-storage type alternating current and direct current mixed micro-grid and the control method thereof have the advantages that the energy utilization efficiency can be improved, the size of a transformer can be reduced, networking and controlling are more flexible, the cost is reduced, and the power supply reliability of the whole system is improved.

An article storage cabinet of fingerprint type is prepared as setting a numbers of doors on cabinet; arranging one ARM9 embedded computer host board in cabinet; connecting embedded computer host board to power supply, information-identifying module, infrared object sensing module, voice prompting module, liquid crystal display and multiple electromagnetic phase-lock; setting one infrared object sensing probe in front side of cabinet and erecting one or multiple infrared sensing probe separately in each door of cabinet.

The invention provides a single-frequency network-based passive radar system and a signal processing method for the same. A plurality of illumination sources for the system are used for simultaneously transmitting the same signals at the same frequency, and namely work in a single-frequency network system. A plurality of transmission stations and one or more receiving stations form a MISO (multiple-input single-output) or MIMO (multiple-input multiple-output) detection system, wherein the MIMO system is provided with a fusion center for performing communication and data transmission with each receiving station through a communication link and fusing processing results of each receiving station, and works at the same frequency; each transmission station is in the same form, and each receiving station is in the same form. A one-stop space-domain processing and single-frequency network defuzzification method is adopted for the signal processing method. According to the system and the method, a conventional broadcasting single-frequency network is used under the condition of no interference on broadcasting, so that the problems of severe clutter caused by the single-frequency network and fuzziness of the single-frequency network are solved, and the advantages of single-frequency network detection in frequency power reduction, hardware saving, detection stability and tracking continuity are fully exerted.

The invention relates to a fireman individual-soldier system on the basis of a wireless Mesh network framework. The system consists of a wireless monitoring mainframe, a plurality of wireless individual-soldier sub-machines and a plurality of wireless repeaters, wherein the wireless monitoring mainframe consists of a monitoring module and a wireless center node module; and each wireless individual-soldier sub-machine consists of a central processing unit module, a positioning module, a vital sign detection module, a distress call module, an environment condition detection module, a carried equipment detection module and a wireless terminal node module. When the fireman individual-soldier system is applied particularly, firemen wear the wireless individual-soldier sub-machines to enter a fire site or other accident sites and a chief officer monitors information such as postures, motion tracks, vital signs, environment conditions, carried equipment conditions and the like through the wireless monitoring mainframe, so that the intelligence support of a command decision is provided for the chief officer in time and a scientific basis can also be provided for daily tactical training. By the fireman individual-soldier system, the modernization, automation and intellectualization levels of a fire command are improved and the battle damage rate of the firemen can also be effectively reduced.

The device includes following parts. The protection switches of 4 multiplexing segments are utilized to change optical fiber line. Two pair of wavelength division multiplexer/wavelength demultiplexer combines multiple optical signals with different wavelengthes onto one optical fiber; or separates the optical signals, which is combined from multiple different wavelengthes. N pieces of matrices with 4 in and 4 out of the optical switches are utilized to change the propagation direction or protect the channel needed. 2n pieces of optical power equalizers are used to balance the power of the optical signals. 2n+2 pieces of monitors are used to monitor and detect faults. The invention provides the flexible protection for channel faults, line faults and node device fault.

The invention relates to a multi-protocol industrial Ethernet adapter, which is characterized in that: the multi-protocol industrial Ethernet adapter comprises a processor, an Ethernet controller, an external expanding memory, a serial-port controller, a coupled isolation filter, an RJ45 interface, a DB9 joint and direct-current power supply. The connection relationship of the circuits is as follows: the processor serves as a center and is interconnected with the Ethernet controller, the external expanding memory and the serial-port controller and the Ethernet controller is interconnected with the coupled isolation filter; the coupled isolation filter is interconnected with the RJ45 interface and the serial-port controller is interconnected with the DB9 joint. The multi-protocol industrial Ethernet adapter further comprises a communication protocol software and a PC-based configuration software. The adapter is provided with an Ethernet port and a serial port. The Ethernet side simultaneously delivers the support for the Modbus/TCP and EtherNet/IP two protocols and the serial port side delivers the support for the Modbus RTU protocol and can access the field device of the Modbus interface to the Modbus/TCP or Ethernet/IP industrial Ethernet, thus resulting in the equipments being more flexibly networked and simplifying and lowering the workload and cost for accessing the original industrial equipments to the new industrial Ethernet.

The invention discloses a perimeter defense system based on a wireless sensor network. The perimeter defense system comprises a wireless monitoring node, a sensor network central control node, a monitoring central server and a portable monitoring terminal. Information collected by the wireless monitoring node through an external expanded sensor and the collected information is sent to the sensor network central control node by the wireless monitoring node in a wireless mode; the sensor network central control node is used for building wireless communication networks, receiving the information sent by the wireless monitoring node and processing the information by utilizing a data diffusion method, and transmitting the processed monitoring data to the monitoring central server in a wired mode; the monitoring central server is used for storing and analyzing the monitoring data and displaying monitoring information, when a defended object is invaded, the monitoring central server alarms and sends the monitoring information and alarm information to the portable monitoring terminal in the wireless mode; and the portable monitoring terminal visits data in the monitoring central server in the wireless mode. The perimeter defense system based on the wireless sensor network has the advantages of being low in cost, low in power consumption, flexible in arrangement, wide in monitoring surface and good in applicability.

The invention discloses a smart electric window group control system based on a CAN bus and a method for the smart electric window group control system. The smart electric window group control system comprises ,The invention beneficial effects: modular design, installation flexibility, occupies small volume, convenient maintenance, can realize the different types of electric window group control.

The invention provides a low power consumption parking management system based on a wireless sensor network, and wireless network nodes, wherein the parking management system includes a display control device, a guide device and wireless network nodes. The wireless network nodes work based on three modes, namely a high energy consumption detection mode, a low energy consumption sleep mode and a monitoring mode. Every wireless network node is responsible for the management of the corresponding stall, a plurality of wireless network nodes constitute an area, each area has one wireless network node serving as the monitoring node which work in the monitoring mode, other wireless network nodes serve as detection nodes which all work in a high energy consumption detection mode or all work in a low energy consumption sleep mode. Due to the adoption of the wireless network nodes with the three working modes, the detection and the monitoring of the stalls can be realized, data about left available stalls can be updated in a real-time manner in the display control device, and the guide device is controlled to guide vehicles into the left available stalls. Therefore, the stalls can be completely managed.

The invention relates to a wireless sensor network system used for environmental monitoring inside a spacecraft. The wireless sensor network system comprises: a local network, that is, a data collection and transmission network, which employs a wireless networking technology to collect and transmit an environmental parameter inside a spacecraft; a gateway, which is used for carrying out bridging between the local network and a spaceborne data network/bus so as to realize data exchange between the local network and the spaceborne data network/bus; the spaceborne data network/bus, which is used for realizing communication between terminals on the bus and between a terminal and a spaceborne computer; and the spaceborne computer, which is used for carrying out processing on sensor data collected by the local network and emitting an appropriate instruction according to a result.

The invention provides a system for communication between a mobile terminal and the Internet, which comprises a grid local area network, a grid access device and a mobile communication network, wherein the grid local area network is used for receiving data sent by the mobile terminal and sending the data to the grid access device; the grid access device is used for grouping the received data and forwarding the grouped data to the mobile communication network by link parallel transmission technology; and the mobile communication network is used for receiving the data sent by the grid access device and transmitting the data to the Internet. The invention provides a method for communication between the mobile terminal and the Internet. The method provides stable and high-speed wireless network access for the mobile terminal; the system has the characteristics of convenient deployment, flexible network deployment and easy maintenance; and the link parallel transmission technology flexibly adjusts bandwidth of the grid local area network accessing the Internet, so that the bandwidth accessing the Internet is wide, and has load balancing capacity.

The invention discloses a comprehensive water quality intelligent supervision method based on the Internet of things (IOT) and a system thereof. On one hand, a fixed water quality monitoring station and a mobile water quality monitoring station are combined, the water quality data in a supervision area is collected in real time, the data is instantly transmitted to an IOT water quality data cloudplatform and a back-end server to carry out operation and feedback on the collected data, and a mode of Internet access is used to realize the real-time remote monitoring of water quality. On the other hand, through inputting river basic data of the supervision area, a two-dimensional hydrodynamic-water quality coupling model is used to carry out long-term water environment prediction to obtain migration, diffusion and transformation of pollutants of unexpected pollution accidents, the early warning and planning prediction of the unexpected pollution accidents are realized. At the same time, based on the two-dimensional hydrodynamic-water quality coupling model, combined with the water quality data monitored in real time, an emission source is tracked, and the tracing function of an abnormal emission source is achieved.

The invention provides an install and play-type online monitoring realization system and method. The install and play-type online monitoring realization system comprises online monitoring nodes, a wireless communication gateway and a control software system, wherein the control software system is used to adopt a dynamic encryption method to perform connection security verification on each online monitoring node through the wireless communication gateway, acquisition of a parameter key and an instruction key is included, and the data communication security is improved; and the online monitoringnodes comprise a collector, a data conversion module, a pre-buffer, a processor, a communication buffer, a wireless transmission module, a battery system and a reset circuit. The install and play-type online monitoring realization system and the method have the advantages that the health statuses of power devices in a substation and a power supply station area can be monitored in real time, and install and play for online monitoring can be realized; through rapid construction of an information acquisition device on the spot, remote and real-time monitoring on the power device can be realized,the operation efficiency of the system can be improved, the manpower and the material resources can be reduced, and the cost can be saved; and thus, the arrangement speed is quick, the system networking is flexible, the cost is low, the power consumption is low, and the extensibility is strong.

The invention discloses a smart home LED lamp with the security function. The smart home LED lamp with the security function comprises a power supply module, a sensor array module, a signal conditioning module, a master control module, an LED driving module, an LED light source assembly, a sound-light alarm module and a wireless receiving and transmitting module. The sensor array module is connected to the master control module through the signal conditioning module, and the master control module is connected with the LED light source assembly through the LED driving module. The sound-light alarm module and the wireless receiving and transmitting module are connected with the master control module. The power supply module supplies power to the sensor array module, the signal conditioning module, the master control module, the LED driving module, the LED light source assembly, the sound-light alarm module and the wireless receiving and transmitting module. The sensor array module comprises a temperature sensor, an illuminance sensor and a security detection sensor. The lamp integrates the security function, and thus the security imperceptibility can be improved to a large extent. The wireless receiving and transmitting module can be connected with a router in the home of a user conveniently, and thus remote control is easy to achieve.

The invention discloses a method for realizing cell networking, which is used for realizing flexible planning of a cell and cell networking in multiple forms and increasing the frequency spectrum utilization ratio or saving network resources. The method comprises the steps of cell splitting and cell merging. The cell splitting method and the cell merging method comprises cell establishment and cell deletion. The cell splitting method comprises the following steps of: making a statistics on an occupying situation of physical resources on a plurality of antenna on the same cell; determining that the physical resources occupied in the preset time are not less than a preset threshold value persistently and determining that cell splitting needs to the carried out when reaching the preset time; and splitting the same cell into at least two cells, and respectively allocating the plurality of antenna to the at least two cells. The cell merging method is similar to the cell splitting method. The invention also discloses a device for cell planning, a distributed base station and internal units thereof.

The invention discloses an LED landscape city building facade cluster light Internet control system, which comprises a centralized control terminal, a server terminal and node terminals, wherein the centralized control terminal is configured to be in communication connection with the server terminal and the node terminals through a wired and / or wireless network, so as to control the node terminal to combine or integrally link a node LED lamp, the server terminal is configured to receive data information sent by the centralized control terminal and send the data information to the node terminals, and monitor the work states of the node terminals in real time and feed the work states of the node terminals back to the centralized control terminal, and the node terminals are configured to control the data uploading, downloading and lighting of verious node LED lamps according to the received data information. The Internet control system provided by the invention can meet the linkage control and remote control on multi-node building facade cluster light, and has high flexibility.