51results about How to "Instant messaging" patented technology

A data communication method allowing reliable real-time communications among a plurality of nodes participating in a session is disclosed. In the case where a plurality of nodes participate in a session such that two or more nodes do not concurrently send data, a session management node reserves a necessary bandwidth needed by all the nodes participating in the session by accessing the Isochronous Resource Manager.

The delay in a multi-channel audio coding apparatus and a multi-channel audio decoding apparatus is reduced. The audio coding apparatus includes: a downmix signal generating unit (410) that generates, in a time domain, a first downmix signal that is one of a 1-channel audio signal and a 2-channel audio signal from an input multi-channel audio signal; a downmix signal coding unit (404) that codes the first downmix signal; a first t-f converting unit (401) that converts the input multi-channel audio signal into a multi-channel audio signal in a frequency domain; and a spatial information calculating unit (409) that generates spatial information for generating a multi-channel audio signal from a downmix signal.

The network equipment (NE) management method includes steps: NE receives connection request from network equipment management system (NEMS); the method determines current working mode, and current connecting mode of NE, and accepts or refuses connection request based on the working mode and connecting mode; if accepting the connection request, then building connection between network management system and NE; based on the working mode of NE to execute operation requested by NEMS, which is already connected to NE, on NE. The invention also discloses NE and NEMS in use for implementing the network equipment management method.

A method and system provide routing of signals through a communications network. A transmitted signal is received. The signal has an associated parameter that is monitored as the signal is received. The parameter indicates the extent to which prior retransmission of the signal has occurred. The signal is retransmitted only if its parameter satisfies at least one predetermined criterion.

A direction-agile antenna system is implemented in a wireless network to allow wireless communication devices to establish and maintain wireless data links with each other. In one embodiment the antenna is provided with a motor and a step motor drive for rotating the antenna to the selected direction. In other embodiment the antenna comprises an array of antennas capable of electronically steering the electromagnetic signal to the selected direction.

The invention discloses a multi-protocol-based information pushing system and method. The multi-protocol-based information pushing system comprises at least two clients, a plurality of access servers corresponding to the clients, a protocol conversion system, a reverse protocol conversion system and an information processing system. Through arrangement of the protocol conversion system and the reverse protocol conversion system in the whole information pushing system, information pushing among clients supporting different communication protocols is realized; the clients can perform instant messaging with other clients on the basis of not increasing client support communication protocols; and multi-protocol-based information pushing is realized.

The invention discloses a web push method based on an event bus. The method comprises the following steps of S1, service container stack address binding; S2, asynchronous processing of messages; S3, releasing of application service messages; S4, web side message subscription; and S5, event bus pushing. The difficulty of upgrading and capacity expanding can be reduced by the technical scheme, and the workload of upgrading can be reduced so that message sending and receiving are enabled to be more timely; the services can be quickly deployed with increasing of the number of the registered users; the concurrency of the system can be enhanced through asynchronous processing; the TPS (transaction per second) of the system can be obviously enhanced; and service calling is safer.

A large complex surface 3D topography robot flexible measuring system belongs to the technical field of topography measurement. The technical problem in the prior art that the measuring equipment cannot realize online measurement due to lack of flexibility, and has low degree of automation, low accuracy of point cloud splicing and measuring efficiency yet to be improved is solved. The measuring method of the measuring system comprises the following steps: S1, building a complex surface measuring system model; S2, planning a complex surface trajectory, and performing offline programming; S3, measuring the 3D topography of the complex surface; and S4, processing the measurement data of the complex surface, and using a global point cloud splicing technology based on IGPS to complete point cloud data splicing. For different measurement products, the robot control program can be replaced at any time to adapt to different measurement requirements. An industrial robot can communicate with a computer in real time, and the degree of automation of the system is improved.

The invention relates to an intelligent-control multifunctional multi-type energy-storage-battery quick charging system. The system is composed of a main circuit and subcircuits. The main circuit comprises a single chip microcomputer, a voltage input circuit, a power source circuit, an oscillating circuit, a keyboard input and display alarm circuit, a signal collection processing circuit and a signal output circuit, wherein the power source circuit is further connected with the subcircuits. Compared with the prior art, the system has the advantages that the functions of leakage detection, heat management, battery equalization management, alarm reminding, surplus capacity calculation, discharger power, SOC, SOH and DOD state reporting are achieved for batteries; the system has the functions of overvoltage protection, battery heat management and the like; corresponding charging methods are designed for different types of energy storage batteries, so that all types of the energy storage batteries can be charged under the optimal charging methods; the function of controlling the maximum output power and other functions can further be achieved for electric cars and the system further has the advantages of being simple in device, small in size, light in weight, quick in reaction speed, low in cost, long in service life and the like.

The invention relates to a denotation controller with a two-stage independent environmental force recognition function, which is characterized in that recognition for a two-stage environmental force of engine ignition signals and powered phase overload signals through integrating an electromagnetic relay and an MEMS sensor, and the integration, the autonomy and the security of the denotation controller are improved. The denotation controller realizes communication with a control system and a programmable execution mechanism through a 1553B bus technology and an RS485 bus technology, and the communication reliability of the system is improved. Meanwhile, in order to improve the reliability of the denotation controller at the power-on moment, a function of power-on IO output blocking is adopted, and the anti-interference capability and the reliability of a product in hardware are improved.

The invention discloses a remote terminal management method based on an MQTT protocol. The MQTT protocol is used for replacing an http protocol, authentication based on the MQTT protocol is used for authentication, a load of the MQTT is used for sending a soap message, and a topic subscription mechanism is used for a sent receiving object. The MQTT protocol provides TCP long connection, and subsequent TR069 protocol signaling can be transmitted through the MQTT protocol. According to the invention, the TR069 message reliability is improved; the rapidity of the TR069 message is improved, and real-time message transmission can be realized through long connection of the MQTT; the timeliness and availability of management equipment are improved, and real-time operation can be performed on equipment management and updating; travel069 is supported to pass through nat, and other devices for passing through a tunnel and the like are not needed for support; based on the MQTT protocol, the TR069 protocol is easier to understand and implement.

The invention discloses a wind-solar hybrid LED bus stop board which comprises a base, a stop board body, a support pillar, solar cell panels, a wind power generation device, an LED display screen, a wireless communication device, a control device, an electric transducer and a storage battery. The support pillar is arranged at the top of the stop board body, a support frame is arranged on the lower portion of the support pillar, the solar cell panels are arranged on the support frame, the wind power generation device is arranged at the top of the support pillar, the solar cell panels and the wind power generation device are connected with the electric transducer which is connected with the storage battery, the wireless communication device is arranged on the left side of the top of the stop board body, and the LED display screen, LED illuminating lamp sets, loudspeakers and the wireless communication device are electrically connected with the control device. By means of the wind-solar hybrid LED bus stop board, the consumption of the electrical energy is reduced, and the timely situation of a vehicle can be conveniently understood by a passenger in time.

The invention relates to a distributed IOT (internet of things) system which comprises a sensor, an IOT gateway device and an IOT server. The IOT gateway device is connected with the sensor and the IOT server. The distributed IOT system is characterized in that the IOT server is connected with a data centre server. The system is easy to maintain, and only data in the data centre server needs to be maintained; the system is high in safety, and physical safety vulnerability caused by distributed data does not occur due to storage centralization; and the system is easy to expand, and storage hard disks of the data centre server can be increased dynamically, and data capacity expanding is an easy thing.

A controllable waterfall-type file pushing method concludes that client sides to which files need to be pushed are layered and grouped in a server side pushing process. Content which needs to be obtained of the files, time when the files are obtained, sources from which the files are obtained and the like in the server side pushing process are controlled by the server side, which means the server side controls and informs the content which need to be obtained by every client side no matter where the client sides are in the IP networks. The controllable waterfall-type file pushing method adopts real-time communication technology, so that the real-time communication can be achieved among client sides and between the client sides and the server sides. The server sides can actively do networking for the client sides and controls file obtaining behaviors of the client sides, reduce independence of the client sides on the server sides when the client sides obtain files, and lower requirement for the number of server side device and network exit bandwidth.

The invention belongs to the technical field of D-series high-speed train running safety monitoring, and particularly relates to a recognition system for a D-series high-speed train driver behavior. The recognition system for the D-series high-speed train driver behavior comprises a vehicle-mounted recognizing instrument, a central server and a ground terminal, wherein the vehicle-mounted recognizing instrument is connected with the central server through a mobile network, is used for acquiring, recognizing and storing audio and video in the D-series high-speed train driver operation process in real time in the D-series high-speed train running process, and can be further in audio/video communication with the ground terminal; the central server is used for processing and storing the audioand video data returned by the vehicle-mounted recognizing instrument, and responding to the operation of the vehicle-mounted recognizing instrument and the ground terminal; and the ground terminal isconnected with the central server, is used for receiving driver behavior information, and can carry out remote audio/video communication with a driver. According to the system, a D-series high-speedtrain driver operation state can be monitored in real time, the driver can be reminded in time, ground management personnel can know the current state of the driver in time through the system, two-wayaudio one-way video talkback can be realized, and train-ground emergency command is simply and quickly realized in an emergency situation.

The invention relates to a comprehensively protecting measurement and control device for a mine. The comprehensively protecting measurement and control device comprises a central processing unit (CPU), wherein the CPU adopts an LM3S2948 chip; the signal input end of the CPU is connected with an on-off input optoelectronic isolation circuit, a voltage transformer and a current transformer respectively; the signal output end of the CPU is connected with an on-off optoelectronic isolation driving output circuit and a liquid crystal display (LCD) respectively; the LCD adopts an LCD12864 chip; and an input/output end of the CPU communicates with a background through a communication interface. As the LM3S2948 chip is adopted, the comprehensively protecting measurement and control device for the mine has high processing speed, rich interface resource, high reliability, low cost and integral design, integrates the displaying, protecting, measuring, computing, controlling and communicating functions, can communicate with the background in real time and is applicable to neutral point ungrounded power supply and power transformation systems with a voltage grade of 10kV and below.

The invention discloses a message pushing method and system for an application program, and the method comprises the steps: enabling the application program of an application program server to be connected with a message pushing server, and sending a message needing to be pushed to the message pushing server; the message pushing method comprises the steps that a message pushing server is started,a client needing to be pushed is searched for from multiple clients through the message pushing server, whether the client needing to be pushed is online or not is determined according to the login state of the client, if yes, the message is directly pushed to the client needing to be pushed, and if not, the message is stored in the message pushing server; and the offline client uses the receivedlatest message as a timestamp, and obtains the message stored in the message push server by using the timestamp when logging in next time. The method has the beneficial effects that the message pushing server is provided to realize uniform interface and automatic adaptation, so that the message can be instantly, accurately and necessarily reached in the message pushing process of the mobile APP.

The invention discloses internet-of-things gateway equipment with electric quantity measurement control being a core. The equipment comprises a shell, a power circuit, an electric quantity measurement circuit, a through and cutoff circuit, a central control circuit and a communication circuit. The input end of the electric quantity measurement circuit and the output end of a current sensor are connected in parallel, a calibration port is connected with the input end of the electric quantity measurement circuit, and the output end of the electric quantity measurement circuit is connected with the central control circuit through an optical coupled isolator. The through and cutoff circuit comprises a through electrode formed in a stamped mode and a cutoff control device with the current sensor in an integrated mode, and the central control circuit and the communication circuit comprise a central controller, a GSM circuit, an FM circuit, an M-BUS circuit, a relay driving circuit and others. The electric quantity of control equipment can be remotely and independently measured and controlled, communication between the internet-of-things gateway equipment and a server as well as between the internet-of-things gateway equipment and terminal equipment can be achieved in real time, and the internet-of-things gateway equipment is suitable for providing interaction between a smart phone APP and a server side or an equipment side for a water, gas and heat supplying measurement terminal and an internet-of-things terminal device and serves for smart city and internet-of-things home construction.

The invention provides a zinc oxide intelligent lightning arrester, and belongs to the field of safety devices. The zinc oxide intelligent lightning arrester is composed of a composite jacket zinc oxide lightning arrester, a lightning arrester top bolt and a lightning arrester intelligent detection module, wherein the lightning arrester top bolt is screwed at the top of the composite jacket zinc oxide lightning arrester, the bottom bolt of the composite jacket zinc oxide lightning arrester is screwed on the lightning arrester intelligent detection module, and the intelligent detection module is independent into a whole, connected in series with the zinc oxide lightning arrester to be connected into a line, and safe and reliable, and can be prevented from being damaged. According to the invention, the narrow-band Internet of Things is adopted for communication in real time and fast, and Beidou positioning is accurate and convenient to find. The zinc oxide intelligent lightning arrester can be widely applied to the field of design and manufacturing of zinc oxide lightning arresters.