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

The present invention provides a data transmission method. The method includes: the sending end obtains the number of redundant data packets to be transmitted according to the pre-acquired network state variable and the pre-acquired transmission success rate; The number of redundant data packets is used to obtain a redundant data packet scheduling method; the sending end sends redundant data packets according to the redundant data packet scheduling method. According to the above method, the adaptive scheduling of redundant data packets can be realized, and the quantity of redundant data packets can be minimized while meeting the real-time requirement of transmission, so as to reduce the network burden.

The invention discloses a wave-recording type station area residual current detection terminal and an early warning system. The terminal includes a residual current detection sampling module, a signal op-amp module, an MCU control module, a metering unit module, a LoRa communication module, and an indication display unit module , an alarm unit module and a storage module. The present invention has voltage, current and residual current measurement functions, and can monitor the residual current of the device under test in real time. By comparing with the set value, an alarm is generated, uploaded to the cloud server through the wireless network and sent push to the user. At the same time, the system has a fault wave recording function, which records the voltage and residual current waveforms of the set period before and after the fault, providing a basis for fault type judgment. The LoRa wireless communication adopted in the present invention reduces the system level, optimizes the transmission mode, and the abnormal data upload breakpoint rate in the station area drops by more than 72.6%.

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 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 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 grooves and second grooves arranged in parallel and spaced apart on the upper and lower surfaces of an N-type single crystal silicon wafer. a groove, so that the ratio of the width of the overlapping portion of the bottom surface of the first groove and the bottom surface of the corresponding second groove in the vertical direction to the width of the bottom surface of the first groove is 0.5-0.8; Silicon nanowire arrays are formed on the upper surface of the N-type single crystal silicon wafer, the bottom surface and side surfaces of the first groove; each second groove is formed on the lower surface of the N-type single crystal silicon wafer N-type heavily doped phosphorus diffusion region; form a dense Spiro-OMeTAD layer, a composite PEDOT:PSS layer and front gate electrode on the upper surface of the N-type single crystal silicon wafer; Prepare the back electrode on the lower surface.

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.

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.