122results about How to "Short communication distance" patented technology

The invention belongs to the field of intelligent household, relates to an intelligent household control system, and particularly to an intelligent household control system based on ZigBee and cloud computing. A main structure includes an information acquisition and equipment control module, a ZigBee wireless sensing network, a household intelligent gateway, an RFID device, a cloud server, and a mobile terminal device, the information acquisition and equipment control module includes an environment information acquisition sensor and a household equipment controller, a ZigBee coordinator node, a ZigBee router node, and a ZigBee terminal node form a ZigBee three-level tree-shaped wireless sensing network to form an intelligent household network frame. The ZigBee network performs the intelligent regulation and control on the household equipment, the user data is stored and processed via the cloud server, the users' behavior habit is deeply tapped, so that a household control scheme based on the users' behavior habit is generated, the indoor wireless signal radiation maintains at a low level, the main structure is simple, the design conception is ingenious, the application environment is friendly, and the market prospect is wide.

Disclosed is a cable identifying system for accurately discriminating one cable from another on site over a long period of time, the system enabling a cable layer or a cable user, when laying out an RFID built-in cable, to do without manually writing any information in the RFID tags built in the cable. One cable having RFID tags built therein can be accurately realized. The individual ID's of the RFID tags are read and stored in a storage apparatus. When a part of the cable is cut, the ID's of the RFID tags nearest to the both end of the cable are read out, and the ID-related data of the RFID tags in the cut-out cable are recorded on a desired medium or electronic information medium.

The embodiment of the invention provides a wireless network connection establishing method and terminal equipment. According to the embodiment of the invention, wireless network information for accessing a wireless network where first terminal equipment is located is acquired through the first terminal equipment, the wireless network information is sent to second terminal equipment in an NFC method to enable the first terminal equipment to receive a first request message sent by the second terminal equipment according to the wireless network information, and a wireless network connection with the second terminal equipment is established according to the first request message. By making use of the characteristics of NFC such as communication convenience, short communication distance and high reliability, the problems of complex operation and error proneness of configuration in the prior art are avoided, and efficiency and reliability of configuration are improved.

An interrogator with an antenna that allows information exchanges with multiple transponders in a shorter distance of communication, by securing an intensified and uniform electromagnetic energy concentrated on areas near antenna elements. The interrogator is furnished with a sleeve antenna that includes a monopole conductor of ¼ wavelength (free space wavelength) continuously connected to a core wire of a coaxial cable on one end thereof, and a feed point on the other end, in which the sleeve antenna is grounded at the feed point. The interrogator has a plurality of the transponders arrayed near the antenna, and a plurality of the antennas selected by RF signal selectors. The interrogator antenna allows movable body identification such as in a goods management system for identifying multiply arrayed goods.

An object is to reduce power consumption of an analog-digital converter circuit. An analog potential obtained in a sensor or the like is held in a sample-and-hold circuit including a transistor with an extremely low off-state current. In the sample-and-hold circuit, the analog potential is held in a node which is able to hold a charge by turning off the transistor. Then, power supply to a buffer circuit or the like included in the sample-and-hold circuit is stopped to reduce power consumption. In a structure where a potential is held in each node, power consumption can be further reduced when a transistor with an extremely low off-state current is connected to a node holding a potential of a comparator, a successive approximation register, a digital-analog converter circuit, or the like, and power supply to these circuits is stopped.

The invention relates to a wireless intelligent light control system, comprising a main controller, a first bridge connector and a light controller, the first bridge connector and the light controllerhave the function of transmitting and receiving ZigBee wireless signals, wherein, the main controller connected with the first bridge connector is used for transmitting light control command to the first bridge controller; the first bridge controller is used for converting the light control command into a ZigBee wireless light control signal which is transmitted to the light controller; and the light controller is used for receiving the ZigBee wireless light control signal and setting light scene according to the commands, which are used for operating the keys and / or buttons on the light controller, contained in the ZigBee wireless light control signal, and preset correspondence of the keys and / or buttons on the light controller and the light scene. The wireless intelligent light controlsystem of the invention can meet the requirements of short communication distance, small transmission data volume, multiple nodes, flexible networking and low power consumption of the wireless systemin home environment.

A multimedia sensor network data transmission cooperative processing method mainly relates to a method for processing the superfluous environmental data among sensor nodes and occupying network resources reasonably. The data processing method is based on the isomerism of wireless sensor network nodes, requires that the functions of nodes can be dispersed to a maximum extent. The nodes can be divided into the following varieties: an ordinary sensing node 1, a video sensing node 2, an audio sensing node 3, a multimedia cluster head node 4, a base station node 5 and an access node 6. The invention can not only save energy, but also can establish a function dispersing cooperative processing mechanism in a wireless network, which leads the heterogeneous nodes in the whole network not to be interfered with each other, thereby being easy to maintain; besides, the homogeneous nodes can cooperate with each other, thereby being capable of occupying the network resource more reasonably and satisfying the demand of actual application more effectively.

A protection circuit is designed to operate when the level of a DC power supply potential which is generated in a rectifier circuit is equal to or greater than a predetermined level (a reference level), so as to decrease the level of the generated DC power supply potential. On the other hand, the protection circuit is designed not to operate when the DC power supply potential which is generated in the rectifier circuit is equal to or less than the predetermined level (the reference level), so as to use the generated DC power supply potential without change. A transistor of the protection circuit includes an oxide semiconductor layer, which enables a reduction in the off-state current of the transistor and a reduction in power consumption of the protection circuit.

There is provided an antenna device used in a radio-communication between a radio communication apparatus and a data carrier within a short communication range. The antenna device comprises first and second leakage transmission lines, and a switch for selectively connecting the first and second transmission lines to the radio communication apparatus when carrying out the radio communication. The first transmission line has an opened end terminal. The second transmission line has a short-circuited end terminal. The first and second transmission lines are arranged in parallel and end terminals thereof are aligned.

The present invention provides a communication restriction control system and a communication restriction control method capable of performing communication restriction control depending on circumstances of communication restriction control area. The mobile terminal transmits a response request signal to a radio response equipment provided in the communication restriction control area which transmits a response signal including identification information as a response to the response request signal. A communication system discriminating equipment which is provided with a database in which the identification information is associated with one of allowed communication circumstances, and allowed communication circumstance is determined by referring to the database according to the identification information, and communication restriction control of the mobile terminal according to the determined result is performed.

The invention discloses a short distance active radio frequency identification system, comprising an electronic tag and a reader-writer. The electronic tag works in a passive working mode, and is suspended under a sleep mode; if a receiving circuit of the electronic tag receives an amplitude modulation signal transmitted by the reader-writer when approaching the reader-writer, a micro controller of the electronic tag is waken up; the awaken micro controller of the electronic tag receives command codes transmitted by the reader-writer and modifies a coupling coefficient of an antenna by means of adjusting antenna impedance of the receiving circuit and returns data to the reader-writer; the reader-writer is in an interval working state, namely searching cards at intervals and getting into sleep state thereafter. The electronic tag and the reader-writer of the invention are small in size and capable of long distance communication and long time of continuous work without replacing batteries or charging.

The present invention provides a network topology structure on a star-cluster double-loop (SCDL), and the structure consists of 4m*2k processing units and 4m switching nodes, wherein, each 2k processing units are connected to form a star network topology structure, therefore, 4m star structures are formed; switching nodes of the 4m star structures are connected to form DL (2m) interconnection network topology structures. The present invention has the characteristics of canonicity, symmetry, planarity, excellent extendibility, lower network cost, simple switching nodes and simple routing policy. According to the present invention, a switching node is connected with four processing units, therefore, communication distance between processing units is reduced, localization feature of the system is improved, delay of the system is reduced and throughput of the system is improved. A novel Johnson coding method can be adopted by the switching nodes and processing units of the present invention, and the method make the coding of the switching nodes and processing units imply information of adjacent nodes and links of the interconnection network; therefore, the route algorithm design is simple.

The invention discloses a display device with an NFC function. The display device comprises a display panel, wherein NFC antenna routing is integrally arranged in the display device; the NFC antenna routing is positioned on one side, with a display surface, of the display panel, and is made from transparent conductor materials. According to the display device disclosed by the invention, the NFC antenna routing is integrally arranged in the display device, made from the transparent conductor materials and positioned on the display surface close to the display panel, so that the sensitivity of an NFC signal is high and the reliability of the NFC signal is high; the NFC antenna routing is not liable to damage and deviate; the NFC antenna routing is made from the transparent conductor materials, so that the NFC antenna routing can be placed in a display area, and the design of a narrow frame of a die set is facilitated.

The invention discloses a least effort delivering zone-spanned virtual cluster multi-hop routing method, and belongs to the field of computer communication networks. In the method, a control message is broadcast to an entire network by a sink by introducing a zone concept based on a low energy adaptive clustering hierarchy (LEACH) protocol according to the characteristics of a clustering multi-hop routing algorithm in a wireless sensor network; the zone to which each node belongs is determined by the node according to received signal intensity; and the direction of the multi-hop routing is specified through the limitation of the zone. During the network polling circulation, when a zone fails to select the cluster, the network generates a complementary cluster at the zone; and when the routing is established, the cluster is virtualized into one node to prevent direct communication between clusters with longer distance and perform the least effort delivering. The method can prolong the survival time of the network, balance the energy consumption of the node of the internet well, homogenize the distribution of dead nodes and expand the network size suitable for the protocol.

The invention provides a method and a device for positioning mobile terminals. The method comprises the following steps: determining at least one mobile terminal serving as a positioning sensor terminal in a cellular network by cellular network equipment; instructing the positioning sensor terminals by an air interface message to search for mobile terminals to be positioned in a near-field communication mode; and when a measurement report reported by any positioning sensor terminal is received, positioning the mobile terminals to be positioned identified by identification information according to a position of the positioning sensor terminal and the identification information of the mobile terminals to be positioned searched by the positioning sensor terminal in the measurement report, or transmitting the identification information and position information of the determined positioning sensor terminal to the mobile terminals to be positioned in order that the mobile terminals to be positioned are positively positioned. The cellular network and a near-field communication technology are combined to perform positioning, so that accurate positioning of the mobile terminals is realized under the situation of saving the overhead of positioning system deployment, and an accurate position of a user can be acquired by a cellular network element.

The invention provides a laser scanning distance measuring device. A rotation platform and a fixed platform are connected through a shaft bearing; rotors are installed on the rotation platform; stators are installed on the fixed platform; a drive transmitting circuit board is installed on the fixed platform; a receiving circuit board is installed on the rotation platform; a hollow transmitting coil is installed on the fixed platform; a magnetic isolating sheet is arranged between the hollow transmitting coil and the drive transmitting circuit board; a hollow receiving coil is installed on the rotation platform; a magnetic isolating sheet is arranged between the hollow receiving coil and the receiving circuit board. Compared with the prior art, the hollow transmitting coil and the hollow receiving coil are tiled in the direction vertical to the rotation shaft so that the vertical height of the laser scanning distance measuring device is shortened and therefore, the occupation volume of the whole structure of the laser scanning distance measuring device is reduced. In addition, when the vertical height of the overall device is reduced, the communication distance of spectrum diode for signal wireless transmission is reduced and therefore, the transmission speed of wireless signals is increased.

The invention discloses an aquaculture wireless sensor network node device and an operation method, and belongs to the technical field of water quality monitoring. The aquaculture wireless sensor network node device and the operation method are suitable for many application occasions such as water quality parameter online detection in aquaculture of Chinese mitten crabs, fish, shrimps, shellfish and the like and used for collecting parameter data of dissolved oxygen content (mg / L) and water temperature ( DEG C) in an aquaculture pond in real time online and sending the data to a wireless sensor network gateway or a wireless sensor network base station and a local terminal in a 433MHz frequency band wireless sensor network communication manner after further changing, possessing and storing the parameter data.

The invention relates to a joint route-multiple multiple access method based on a wireless body area network (WBAN), belonging to the field of WBAN. With respect to the WBAN composed of sensor nodes for collecting different data services, through the method, a multi-hop tree topology is constructed so as to realize multiple access and gather the data collected by the nodes to a central control node along a the tree structure route at the same time. In case of a data demand, the central control node sends a command packet to sub-nodes which construct the tree topology in the carrier sense multiple access (CSMA) manner. The nodes on each branch of the tree topology are nodes for collecting the same data service. With respect to the nodes far away from a sink node, a replay node is introduced in a proper position on the trunk of the body to reduce the communication distance while avoiding the data loss at nodes positioned on both sides of limbs due to movement of the limbs. The method introduces the relay node and arranges the limbs nodes with mobility model, so as to save energy and improve data transmission reliability at the same time.

An RFID built-in cable manufacturing device including: an RFID applicator for sticking an RFID tag onto a composite strand; a sheath molder for providing sheath for the composite strand on which the RFID tag has been stuck at the RFID applicator with resulting an RFID built-in cable; an RFID reader for sequentially reading ID of the RFID tag as the RFID built-in cable is fed to a cable take-up drum; and a server for storing data having been read out by the RFID reader.

The invention relates to a ZigBee cellular network which is used for effectively reducing the frequency of relay tasks borne by a router positioned near a coordinator in a larger coverage region and ensuring the efficiency and the reliability of network data transmission. The ZigBee cellular network comprises a network gateway and a plurality of ZigBee subnetworks arranged cellularly, wherein wireless transmission according with ZigBee standard or wireless transmission adopting a 433MHz frequency band is adopted between every two adjacent ZigBee subnetworks as well as between the network gateway and the ZigBee subnetwork adjacent to the network gateway. The network gateway receives data from each ZigBee subnetwork and carries out protocol conversion and then carries out wireless communication with an Internet or movable network. All ZigBee subnetworks are arranged cellularly, which effectively shortens the communication distance among nodes in the ZigBee subnetworks, reduces the relay frequency and also reduces the relay frequency among different ZigBee subnetworks during the communication, and ensures the efficiency and the reliability of the data transmission.

The invention discloses an OLED (Organic Light-Emitting Diode) display panel and a manufacturing method. The OLED display panel comprises an OLED screen body packaging cover, a first OLED electrode, an OLED luminous area, a second OLED electrode, an OLED substrate and an insulating protective film, which are sequentially cascaded, wherein the OLED substrate is provided with a first surface facing the OLED luminous area and a second surface facing one side of the insulating protective film; the second OLED electrode is positioned on one side of the first surface of the OLED substrate; an NFC (Near Field Communication) antenna wire is formed on the second surface of the OLED substrate, and is covered by the insulating protective film; light for display is emitted to the side where the OLED substrate is positioned by the OLED luminous area to make the NFC antenna wire be positioned on one side of the display surface of the OLED display panel. According to the OLED display panel and the manufacturing method, the NFC antenna wire is directly formed on the second surface of the OLED substrate, and is positioned on one side of the display surface of the OLED display panel, so that the number of elements and the thickness of a module can be reduced, a manufacturing process can be simplified, production cost can be reduced, an NFC signal is high in sensitivity and reliability, the NFC antenna wire is unlikely to be damaged and deviated, and a narrow-frame design of the module can be implemented.

A non-contact IC tag includes an insulating substrate, an IC tag having an IC chip and a matching-circuit equipped dipole antenna connected with the IC chip, and a first and second parasitic antenna both provided at the other side of the insulating substrate. The matching-circuit equipped dipole antenna has two antenna sections, a connecting terminal section and a matching circuit section. Projection images of the first and second parasitic antennae onto the one side of the insulating substrate respectively overlap at least portions of the two antenna sections of the matching-circuit equipped dipole antenna. The first and second parasitic antennae are made electrically conductive by a connected portion, and the projection images of the first and second parasitic antennae, and the connected portion onto the one side of the insulating substrate do not overlap the IC chip and the connecting terminal section of the matching-circuit equipped dipole antenna.

The invention discloses a network clustering method of a mobile sensor based on partition, which belongs to the network field of the mobile sensor in the wireless communication. The method not only combines loading conditions of clusters, but also takes the mobility and the rest energy of nodes into consideration. By comparing the numbers of nodes in the clusters, the loading conditions of each cluster can be obtained. The partition of the clusters can be realized by dividing the clusters with large load into a proper amount of subdomains and degrading and fusing the clusters with undersized load. With the adoption of the network clustering method of the mobile sensor, the network connectivity and the stability of the cluster structure can be efficiently enhanced, and the service life of the network is prolonged.

The invention discloses a gas meter communication networking method and system. Specifically, the system includes: a gas meter, bridge modules, a concentrator and a remote data center. The bridge modules communicate with the gas meter to read the gas data of the gas meter; the bridge modules perform power line carrier communication with the concentrator through a power line, and send the read data to the concentrator; the concentrator communicates with the remote data center through a public network, and sends the received data to the remote data center. The gas meter communication networking method and system provided by the invention have the characteristics of table communication, effective use of existing power lines, no need to occupy additional radio frequency and channel resource, and no radio radiation pollution. Communications relay can be carried out between bridge modules, the communication distance is expanded, and the system scale and capacity are improved.

The invention provides a fast fourier transformation (FFT) parallel method based on a multi-core digital signal processor (DSP) platform. The method comprises the following steps that: a main processor uniformly distributes data of an original point N to be subjected to FFT to all P processors; sub FFT is executed on a point N / P on each processor, and thus FFT results of the previous log2(N / P) levels of the original point N are obtained; and due to data interaction between the processors, so that FFT from the log2(N / P)th level to the log2(N-1)th level of the original point N can be finished. During data interaction, the standard whether the number of the processors meets the equation i%t=i%(2t) is used for selecting an interaction object of the processors, so that the communication distance between the processors is shortest, and the operation efficiency is improved.

The invention discloses a quantum communication networking method and system based on a multi-wavelength entangled light source. The method comprises the steps: by a multi-wavelength entangled light source, generating entangled single photons which are equal in frequency interval and paired; performing wavelength channel configuration on the entangled single photons by using a relatively mature dense wavelength division multiplexing technology in a classical optical fiber communication system; and constructing a quantum network server independent of the users and distributing the entangled photons of each wavelength to each user, thereby ensuring that every two users can share a pair of independent entangled single photons, and finally realizing a quantum communication network in which multiple users are randomly interconnected.

The invention discloses a distributed cloud storage method and system. A central server receives a file transfer request sent by a user side, searches for a node server closest to the user side, and forwards the file transfer request to the node server; and when the file transfer request is a file upload request, the node server stores the file uploaded by the user side and synchronizes the file to the central server. The method and the system have the beneficial effects that a distributed storage structure is constructed by utilizing the central server and the node server, and data is dispersedly stored on a plurality of node servers, so that the breakdown of the whole storage system caused by single-point faults is avoided, and the stability and the safety are higher; the central serverdistributes the tasks of data transmission to all node servers, adapts to high-concurrency data interaction scenes, and forwards the file transfer request to the node server closest to the user side,so that a communication distance between the node server and the user side is as small as possible, and the communication efficiency is higher.

An ID tag capable of communicating data wirelessly, the size of which is reduced, and where the size of an IC chip is reduced, a limited area of the chip is effectively used, current consumption is reduced, and communication distance is prevented from decreasing. The ID tag of the invention includes an IC chip having an integrated circuit, a resonance capacitor portion and a storage capacitor portion, and an antenna formed over the IC chip so as to overlap at least partially with an insulating film interposed therebetween. The antenna, the insulating film and wirings or semiconductor films forming the integrated circuit are stacked, and one or both of capacitors in the resonance capacitor portion and the storage capacitor portion are formed by this stacked structure.