32results about How to "Optimize the transmission method" patented technology

The invention provides a data transmission method comprising the steps as follows: a sending end acquires the quantity of redundant data packets needing to be transmitted of data packets to be transmitted according to a pre-acquired network state variable and a pre-acquired successful transmission rate; the sending end acquires a redundant data packet scheduling method according to the quantity ofthe redundant data packets; and the sending end sends the redundant data packets according to the redundant data packet scheduling method. According to the method, adaptive scheduling of the redundant data packets can be achieved, the quantity of the redundant data packets can be furthest reduced while the requirement on transmission instantaneity is met, and a network load is relieved.

The invention discloses a message delivery method for reducing network load of a message midware. The method comprises the steps of: carrying out primary classification according to a structural similarity of all original messages received by a current node so as to obtain a similar original message set, then carrying out secondary classification according to the address of a next-hop node of the original messages in the similar original message set to obtain a similar original message subset, respectively extracting contents of same and different parts of all the original messages in the subset, carrying out differential encoding, packaging into encoded messages, sending to the next-hop node, unpacking and analyzing by the next-hop node, sending the original messages to message consumers when the address of the target node of analyzed original message is the node; and repeating the processes of classification and packaging to all unprocessed original messages by the node until the original messages are sent to the message consumers. The invention has the advantages of effectively reducing the network load of the message midware by reasonably using the structural similarity of the messages of a XML (Extensive Makeup Language) text data format and skillfully using the differential encoding.

The invention discloses a wave recording type transformer area residual current detection terminal and an early warning system, and the terminal comprises a residual current detection sampling module,a signal operational amplifier module, an MCU control module, a metering unit module, a LoRa communication module, an indication display unit module, an alarm unit module, and a storage module. The terminal has the functions of measuring voltage, current and residual current. The residual current condition of the tested equipment can be monitored in real time, an alarm is generated by comparing the residual current condition with a set value, and the alarm is uploaded to a cloud server through a wireless network and pushed to a user. Meanwhile, the system has a fault recording function, records voltage and residual current waveforms of a set period before and after a fault, and provides a basis for fault type judgment. According to the LoRa wireless communication adopted by the invention,the system hierarchy is reduced, the transmission mode is optimized, and the transformer area abnormal data uploading breakpoint rate is reduced by more than 72.6%.

The invention provides a network data auditing system. A plurality of AP equipments perform simple analysis on to-be-analyzed network data and simple analysis data is formed. A MASTER management unit distributes the simple analysis data and deep analysis data to an auditing cluster unit via two different transmission channels. The auditing cluster unit performs deep restoration analysis on the simple analysis data and the deep analysis data and generates auditing log and a log message queue. A storage cluster unit stores the auditing log and a log message queue. A reporting cluster unit monitors the log message queue in the storage cluster unit and reports the auditing log to a data center according to a report format of the data center after acquiring the description information of the to-be-reported auditing log. The invention also provides a corresponding method. The network data auditing system and method provided by the invention are implemented through three layers. Logic and physical separation are achieved among the three layers and the network data auditing system and method have characteristics of good performance and high expandability.

There is provided a data sequence structure for an uplink control information single carrier signal, comprising: a first code word and a second code word each corresponding to at least one type of uplink control information; a plurality of data units included in the first and the second code-words; a similar sequence of pilot units included in both the first and the second code word. The first and the second code word having a maximum Euclidean distance between the data units, and both the first and the second code word having the form of a CAZAC sequence.

The invention relates to an electric power facility deformation monitoring system and monitoring method based on an NB-IoT (narrow band internet of things). The system comprises a Beidou monitoring point device, an internet of things sensing and monitoring device, an NB-IoT base station and an NB-IoT core network data distribution platform, wherein the Beidou monitoring point device and the internet of things sensing and monitoring device are connected with the NB-IoT core network data distribution platform through the NB-IoT base station, and the NB-IoT core network data distribution platformis connected with a server. The running state and the attitude of a power grid facility are monitored and analyzed, monitoring service applications are quantified, a basis is provided for power gridfacility operation and maintenance staff to rapidly recognize and solve problems, a monitoring information transmission mode and a transmission mechanism are further optimized, information transmission service quality is enhanced, and user experience satisfaction is improved.

The invention discloses an LED driving device and control system of a handshake type two-way transmission device, and the device comprises a previous-stage interface module, a later-stage interface module, an intelligent transmission direction scanning and monitoring module, a data control module, and an LED output driving circuit. The input end of the intelligent transmission direction scanning and monitoring module is connected with the previous-stage interface module and the next-stage interface module, the output end of the intelligent transmission direction scanning and monitoring module is connected with the data control module, and the data control module outputs signals to the LED output driving circuit. According to the invention, the problem that an LED transmitting signals in a traditional mode is easy to fail is solved, and normal transmission of the whole system is ensured.

The invention discloses an intelligent management and control system for a transmission line ground wire. The system comprises a power acquisition device, a Beidou terminal, a Doka Beidou terminal, acloud gateway, a cloud service platform, and a display terminal. The power acquisition device and the Beidou terminal are connected through a modbus rtu communication protocol. A Beidou satellite is remotely wirelessly connected with the Beidou terminal and the Doka Beidou terminal. The Doka Beidou terminal is connected with the cloud service platform through the cloud gateway. The display terminal is wirelessly connected with the cloud service platform. According to the invention, the original information transmission method is improved by installing a Beidou positioning module; signals are transmitted through the Beidou satellite, effectively increasing the transmission distance; a user can remotely monitor multiple ground wire monitoring processes, which improves efficiency; the systemenhances the global auto-diagnosis capability through cooperative work of multiple instruments and multiple control systems; on-site data can be recorded and intelligently analyzed; and multi-channelalarms of an SCADA monitoring system, paging, emails and mobile phone text messages are realized.

The invention discloses a WiFi-based vehicle-mounted video automatic storage method and system. The method is characterized in that the access of a mobile device to a vehicle-mounted system is achieved through WiFi; the vehicle-mounted system acquires an available storage capacity of the current mobile device, and sends a vehicle-mounted video to the current mobile device according to the available storage capacity of the current mobile device; the size of the vehicle-mounted video sent by the vehicle-mounted system to the mobile device is no larger than the available storage capacity of the current mobile device; the received vehicle-mounted video is stored in a terminal storage device through the current mobile device. The WiFi-based vehicle-mounted video automatic storage method and system provided by the invention have the advantages that the vehicle-mounted video of the vehicle-mounted system is stored in the terminal storage device through the mobile device, so that the storage of the vehicle-mounted video is more flexible, the data transmission method is optimized, and the use is facilitated.

The invention discloses a multimedia bridge for real-time transmission of multi-channel video. The multimedia bridge has the advantages of simple structure, low cost, high signal transmission efficiency, reliable performance, and the like. The multimedia bridge is structurally characterized in that an input end of the multimedia bridge is connected with a group of video decoders to receive digital video, an output end of the multimedia bridge is connected with a system memory, the multimedia bridge comprises a plurality of groups of video processing units which are arranged according to an array, the number of the video units is the same as that of the video decoders, and each video decoder is connected with one corresponding video processing unit; each video processing unit comprises a scaling device, the scaling device is connected with a cache device, the cache device is connected with a DMA controller, simultaneously the scaling devices of the video processing units, the cache devices and the DMA controllers are connected respectively, simultaneously each scaling device and each cache device are connected with a parameter setting module, and each DMA controller is connected with an arbiter; and each video decoder is also connected with a corresponding controller.

The invention discloses a rapid multimedia color display transmission method. Rapid multimedia color display transmission is finished by two processes of multimedia color display preprocessing and multimedia color display. The multimedia color display preprocessing comprises that: a color display user sets a multimedia color display in a WEB way, and an ES_BSM server generates an ES_BSM short message and transmits the ES_BSM short message to a user mobile phone to finish an active multimedia color display transmission process. The multimedia color display comprises that: when the color display user calls the mobile phone of a user B, a call detection server detects the call of the user; and the call detection server activates a client by the ES_BSM short message to finish the process of displaying an ES media language (ESML) multimedia file set by the color display user on the mobile phone of the user B. The method has the advantages of defining the ES_BSM short message and an ESML method to solve the two problems of terminal universality and transmission delay simultaneously and achieve effects similar to those of text information.

A switch system is provided. The switch system comprises a first multiplexer and a baseboard management controller (BMC). The first multiplexer is coupled to a first electrically-erasable programmable read-only memory (EEPORM). The baseboard management controller transmits a first control signal to the first multiplexer by a first multiplexer control channel. Wherein, the first control signal controls the first multiplexer coupling to a first serial peripheral interface (SPI) bus. The baseboard management controller transmits a first system parameter to the first multiplexer by the fist SPI bus. The first multiplexer writes the first system parameter by a second serial peripheral interface bus to the first electrically-erasable programmable read-only memory.

The invention discloses a wireless flexible arm vibration control system based on virtual instrument technology, which uses a SRWF-1021-50 wireless module for wireless communication. It consists of three parts: piezoelectric double-rod flexible arm, on-site vibration control terminal and main control terminal. Among them, AT89S52 single-chip microcomputer controls the movement of stepping motor, uses electromagnetic coil as sensor to detect vibration signal, piezoelectric element as actuator, and uses SRWF -1021-50 wireless module realizes the wireless transmission of signals between the vibration control terminal and the main control terminal. It solves the operation inconvenience caused by the use of wires, and at the same time improves the security of the system. The research on the wireless vibration control system has high practicability, and it is also of great significance to the realization of remote control and telemetry.

The invention discloses an unmanned aerial vehicle control system. The system comprises a main processor powered by a power supply module arranged in an unmanned aerial vehicle. The main processor is connected with a posture and heading system, a barometric altitude sensor, a GPS module, an ultrasonic sensor, an airborne remote sensing device, an information storage module, an ultrasonic ranging module and an electronic speed governor. The barometric altitude sensor and the GPS module are connected with the main processor after being compared. The information storage module stores no-fly zone information. The posture and heading system is directly connected with the information storage module through an instruction calling program. The ultrasonic ranging module is directly connected with the posture and heading system through the instruction calling program. The main processor is connected with a shooting device through a shooting control system. The main processor is connected with the information processing system of a ground station through digital microwave transmission. According to the structure, hovering and positioning data are accurate; the communication speed is very fast; the communication stability is improved; and the problem that the unmanned aerial vehicle cannot be controlled is avoided reliably.

The invention relates to a silicon-based organic-inorganic hybrid solar cell and a preparation method thereof. The method comprises the following steps: forming a plurality of first and second trenches arranged in parallel and spaced apart on the upper and lower surfaces of the N-type single crystal silicon wafer such that the ratio of the width of the overlapping portion in the vertical directionof the bottom surface of the first trench and the bottom surface of the corresponding second trench to the width of the bottom surface of the first trench is 0.5-0.8; Forming a silicon nanowire arrayon an upper surface of the N-type single crystal silicon wafer, a bottom surface and a side surface of the first trench; Forming an N-type heavily doped phosphorus diffusion region in each second trench of the lower surface of the N-type monocrystalline silicon wafer; Forming a dense Spiro on the upper surface of the N-type monocrystalline silicon wafer; OMeTAD layer, a composite PEDOT: PSS layerand a front gate electrode; a back electrode is prepared on the lower surface of the N-type monocrystalline silicon wafer.

The hardware structure and application method of on-board rewritable chip programming on the ground belong to the technical field of aerospace satellite platforms. Connect with other communication chips, responsible for reading programming data and data transmission with the target board; FPGA is responsible for identifying the connection status of the target board, and sending the identification result to the DSP, and controlling the corresponding interface according to the control command issued by the DSP communication; the USB chip is responsible for identifying the connection of the USB device, and sends it to the DSP through the FPGA, responds to the control of the DSP, and reads the data inside the USB device; the 1553B chip is responsible for the communication between the FPGA and the target board; the method includes hardware structure initialization; The USB device is connected to the hardware structure; the target board programming state is initialized; the target board programming and data verification.

The invention discloses an information collection and transmission control system for an unmanned aerial vehicle. The system comprises a DSP powered by a power supply module. The DSP is separately connected to an inertial sensor, a gas pressure altitude sensor, a GSP module, an ultrasonic sensor, an airborne remote sensing facility and an electronic speed regulator. The gas pressure altitude sensor and the GPS module are connected to the DSP after comparison, the DSP performs wireless communication connection with an information processing system of a ground station through digital microwave transmission, the information processing system is connected to an information display interface and an operating terminal, the information processing system can transmit the collected images and the data information of information data, and also can process an operating command of the operating terminal. By adopting the structure and integrating technologies of computer network communication and wireless communication and the like, multi-aspect functions such as traffic management, big data statistics, disaster prevention pre-warning, geographical mapping, meteorological observation, travelling navigation, real-time monitoring and the like can be achieved.

The invention relates to the technical field of smart bracelets, and specifically discloses a smart bracelet with a health monitoring function. The smart bracelet comprises a bracelet belt and a mainmachine shell which are integrally formed, wherein a main machine clamping groove is arranged on the upper surface of the main machine shell; a round hole is arranged at the center of the bottom wallof the main machine clamping groove; threaded connection holes are arranged at the positions, around the round hole, of the bottom wall of the main machine clamping groove; a main machine body is clamped in the main machine clamping groove; a microprocessor, a memory and a main storage battery are arranged in the main machine body; a micro display screen is arranged on the upper surface of the main machine body; and a wireless charger capable of extending out of the round hole is arranged on the lower surface of the main machine body. Compared with a conventional smart bracelet which directlymakes contact with the back surface of the wrist of a human body for detection, the smart bracelet with the health monitoring function provided by the invention is higher in human health detection accuracy, and is greatly improved in detection accuracy specifically when the heart rate and the pulse of a human body are detected through a pulse sensor.

The invention discloses an automatic transmission gear selecting device which comprises a man-machine interaction module and an information processing module. The man-machine interaction module is connected with the information processing module, is used for acquiring transmission operation control information of a driver and feeding the information back to the information processing module and is also used for displaying the current gear state of the transmission; the information processing module is connected with a CAN bus of a vehicle and is used for acquiring the information of the man-machine interaction module and feeding the information back to the CAN bus; the CAN bus carries information transmitted by the man-machine interaction module in the next message; after receiving the information transmitted by the man-machine interaction module, a transmission controller executes related processing; the transmission controller transmits the transmission gear information to the CAN bus in real time and controls the man-machine interaction module to output a signal capable of being indentified by the driver after the man-machine interaction module acquires the transmission gear information. The device disclosed by the invention can meet normal use of the automatic transmission and has a build-in Bluetooth transmission function of a CAN bus message.

The invention relates to a message mechanism-based file transfer system and method for power grid control. The system comprises message server clusters which are respectively coupled to a service terminal and a client terminal, so that the service terminal and the client terminal can communicate with each other; the client terminal which can send a request message to the service terminal through the message server cluster and read a return message of the service terminal in real time; and the service terminal which can read the request message from the client side from the message server cluster in real time and analyze the request message to obtain the request type of a target transmission object; wherein the service terminal performs corresponding processing on the target transmission object based on the request type and transmits the processed target transmission object to the client terminal through the message server cluster. In this way, many-to-many transmission in a power grid control system can be achieved, and the reliability and efficiency of network transmission are improved.

The invention discloses a message delivery method for reducing network load of a message midware. The method comprises the steps of: carrying out primary classification according to a structural similarity of all original messages received by a current node so as to obtain a similar original message set, then carrying out secondary classification according to the address of a next-hop node of theoriginal messages in the similar original message set to obtain a similar original message subset, respectively extracting contents of same and different parts of all the original messages in the subset, carrying out differential encoding, packaging into encoded messages, sending to the next-hop node, unpacking and analyzing by the next-hop node, sending the original messages to message consumerswhen the address of the target node of analyzed original message is the node; and repeating the processes of classification and packaging to all unprocessed original messages by the node until the original messages are sent to the message consumers. The invention has the advantages of effectively reducing the network load of the message midware by reasonably using the structural similarity of themessages of a XML (Extensive Makeup Language) text data format and skillfully using the differential encoding.

The present invention provides a method and device for writing data into an intelligent card, relating to the technical field of data processing of intelligent cards. The method comprises the following steps: acquiring downlink data to be written; grouping and packeting commands according to the downlink data to be written to generate command data packets, the command data packets including non-ordinary telephone directory identifiers and instruction types; writing the command data packets into a telephone directory of the intelligent card via an intelligent card telephone directory function channel. According to the present invention, data may be written into the telephone directory of the intelligent card via the intelligent card telephone directory function channel, so that the device for writing data into the intelligent card may write data into corresponding positions of the intelligent card according to the instruction types. According to the present invention, no bottom layer code modification is needed on a terminal side, a simple and convenient data transmission mode can be realized, and problems of complexity, unstable data transmission and the like of a conventional mode for the terminal to write data into the intelligent card can be prevented.

A ceramic capacitor for reducing parasitic inductance belongs to the technical field of ceramic capacitors and comprises a first chip, ceramic dielectric thin pieces, a second chip, two grounding external electrode plates and two signal external electrode plates, wherein the first chip comprises a first ceramic substrate and a first inner electrode, the first inner electrode horizontally extends to a left side surface and a right side surface of the first ceramic substrate, the second chip comprises a second ceramic substrate and a second inner electrode, the second inner electrode longitudinally extends to a front side surface and a rear side surface of the second ceramic substrate, the ceramic dielectric thin pieces are sandwiched between the first chip and the second chip and are laminated to form a chip body, the ceramic dielectric thin piece is arranged at each of an upper side and lower side of the chip body, the two grounding external electrode plates are respectively arranged at a front side surface and a rear side surface of the second chip, and the two signal external electrode plates are respectively arranged at a left side surface and a right side surface of the first chip. The ceramic capacitor is used for solving the technical problem that a large amount of parasitic inductance exists in the ceramic capacitor.

The present application discloses a system information transmission method and device, including: respectively assigning system information blocks with large capacities to different system information SIs for transmission; separately assigning system information block SIB2 among small-capacity system information blocks to one SI transmission; determine the number of other small-capacity system information blocks other than the SIB2 and the repetition period of each of the other small-capacity system information blocks; if there are multiple small-capacity system information blocks, it is the small-capacity system information with the same repetition period Block allocation is transmitted in the same SI, and small-capacity system information blocks with different repetition periods are allocated for transmission in different SIs; this saves memory, prevents memory out of bounds, and avoids cell establishment failure due to memory out of bounds, PER Encoding failure problem.

The invention discloses a WiFi-based vehicle-mounted video automatic storage method and system. The method is characterized in that the access of a mobile device to a vehicle-mounted system is achieved through WiFi; the vehicle-mounted system acquires an available storage capacity of the current mobile device, and sends a vehicle-mounted video to the current mobile device according to the available storage capacity of the current mobile device; the size of the vehicle-mounted video sent by the vehicle-mounted system to the mobile device is no larger than the available storage capacity of the current mobile device; the received vehicle-mounted video is stored in a terminal storage device through the current mobile device. The WiFi-based vehicle-mounted video automatic storage method and system provided by the invention have the advantages that the vehicle-mounted video of the vehicle-mounted system is stored in the terminal storage device through the mobile device, so that the storage of the vehicle-mounted video is more flexible, the data transmission method is optimized, and the use is facilitated.

The invention relates to a novel hybrid photovoltaic cell and a preparation method thereof. The method comprises the following steps that a plurality of first grooves and second grooves, which are arranged in parallel and at intervals, are formed in the upper surface and the lower surface of an N-type silicon wafer, wherein the first grooves and the corresponding second grooves are partially overlapped in the vertical direction; a silicon nanowire array is formed on the upper surface of the N-type silicon wafer and on the bottom surfaces and the side surfaces of the first grooves; an N-type heavily-doped phosphorus diffusion region is formed in each second groove in the lower surface of the N-type silicon wafer; a dense P3HT layer, a composite conducting layer and a front grid electrode are formed on the upper surface of the N-type silicon wafer; and a back electrode is prepared on the lower surface of the N-type silicon wafer.