436 results about "Baud" patented technology

The invention discloses a self-adaptive packet data transmission system and method based on Beidou short messages, the system is composed of eight core modules such as a serial port communication module, a protocol conversion module and a configuration module, multi-link communication is established through an RS232 serial port and a Beidou director, and Baud rate self-adaptive adjustment and multi-serial port parallel processing are supported. The protocol conversion module adopts a finite-state machine to analyze a BDS-3 protocol, data fragmentation and recombination are achieved in combination with a sliding window algorithm, and the compression rate reaches 3: 1. The method comprises the following seven stages of flows: evaluating channel quality by detecting a message, and dynamically switching a BDS-3 anti-interference mode; implementing flow control by adopting a token bucket algorithm, and dividing three levels of QoS guarantee emergency instructions; and terminal health management is realized through a heartbeat detection and diagnosis instruction set. According to the method, instruction execution is delayed by 1.2 seconds in emergency communication, the bit error rate is controlled to be 0.0005%, the transmission efficiency is improved by 40% compared with a traditional scheme, and the method can be widely applied to the fields of Internet of Things, intelligent transportation and the like.

The invention relates to the field of inverter adaptive protocol matching, in particular to a distributed power supply access unit photovoltaic protocol adaptive method, which comprises the following steps: collecting inverter communication protocols of existing manufacturers and calculating proportions of supply quantities of different manufacturers to form a comparison library; setting a matching sequence of address fields and baud rates; matching the protocols to be compared with the existing protocols in the protocol library in sequence; if the matching is not successful, traversing the address field and the baud rate field in the comparison library in a polling incremental manner; and if the matching is completed, the roll call maintenance module performs periodic matching verification. The address matching module and the baud rate matching module are added, so that the protocol matching success rate is improved; the address field and the baud rate of the manufacturer with a large proportion are preferentially adopted, so that the matching success probability is improved, and the time cost in the matching process is reduced; in the protocol self-adaption process, feature data is adopted for comparison, and response data is required to be within an accepting range, so that the accuracy of protocol identification is ensured.

The invention relates to the technical field of computer hardware and network communication, in particular to a high-speed I / O (input / output) virtualization server based on an FPGA (field programmable gate array) and a remote forwarding method.The high-speed I / O virtualization server comprises an FPGA chip, a network processing unit, an I / O protocol processing unit, a protocol conversion and scheduling unit, a time sequence and transaction management unit and a data buffering and flow control unit are integrated in the FPGA chip; the optical fiber Ethernet interface module comprises a physical layer interface and an MAC layer processing and network configuration interface; the local I / O interface module comprises a USB interface circuit, a serial port interface circuit, a PCIe interface circuit and an interface expansion connector; the power supply and monitoring module comprises a multi-path power supply management system, a state monitoring and diagnosis system and an LED indication system; according to the self-adaptive Baud rate detection circuit, the Baud rate can be accurately locked under the condition that data with less than two characters is received, the number of data bits, the type of a check bit and the length of a stop bit are automatically identified, and compared with a traditional microcontroller scheme, the self-adaptive Baud rate detection circuit has higher precision and higher detection speed.

The invention provides an anti-interference serial port communication method and system for an industrial-grade wireless module, and the method comprises the steps: collecting interference data in the serial port communication of the industrial-grade wireless module in real time based on a multi-dimensional interference feature collection module, and forming a multi-scale interference feature vector; inputting the multi-scale interference feature vector into a Mamba communication state space model fused with a CRC (Cyclic Redundancy Check) mechanism, and predicting a potential interference mode through linear complexity time sequence modeling; based on an adaptive weight transmission optimization function, carrying out dynamic weighting adjustment on the transmission parameters in the potential interference mode; wherein the transmission parameters comprise a baud rate, a data bit length, a verification mode and a retransmission strategy. According to the invention, hardware cost does not need to be increased, and the cost of anti-interference serial port communication is reduced; meanwhile, based on an adaptive weight transmission optimization function, dynamic weighting adjustment is carried out on transmission parameters in a potential interference mode, and interference dynamic changes are tracked in real time to carry out anti-interference communication.

The invention discloses a serial port communication transmission method and system with high baud rate tolerance. The method comprises the following steps: S1, monitoring a serial port communication line until a level change from logic '1' to logic '0' is detected, and detecting a start bit of a data frame through a triple acknowledgement mechanism; s2, after the transmission of the data bits and the optional parity check bits is completed, continuously monitoring the serial port communication line until the level change from the logic '0' to the logic '1' is detected, and confirming a stop bit for detecting a data frame through triple sampling; and S3, after the stop bit of the data frame is ended, returning to the step S1 to detect the start bit of the next frame of data. According to the invention, by adopting a triple acknowledgement mechanism and a triple sampling acknowledgement method, the start bit and the stop bit of the data frame can be accurately detected, accurate receiving of data can be kept even under the conditions of Baud rate change and noise interference, and an efficient and reliable serial port communication solution is provided for users.

The invention relates to the technical field of signal processing, and discloses a method and device for adaptively selecting communication parameter matching, equipment and a storage medium, and the method comprises the steps: receiving serial port communication data in a preset data format; performing CRC (cyclic redundancy check) on the serial port communication data, and judging whether the CRC is correct or not; if the CRC is correct, performing communication processing on the serial port communication data and then directly returning the serial port communication data; if the CRC check is wrong, accumulating the error times, and judging whether to start adaptive baud rate processing according to the magnitude relationship between the accumulated times and the preset continuous times; and when the self-adaptive baud rate processing is started, carrying out the self-adaptive baud rate processing on the serial port communication data so as to change the serial port parameter setting of the serial port communication data. According to the method, communication parameter matching is adaptively selected under the condition that a communication protocol is unknown, so that the serial port parameters of the serial port communication data can be set, and normal operation of serial port communication is ensured.

The embodiment of the invention discloses a data processing method for optical communication and a related device, which adopt inner code coding with higher gain to improve the performance of cascade coding, can be better compatible with DP-16QAM (quadrature amplitude modulation) and DP-QPSK (differential phase shift keying) modulation, and can be favorably applied to high-baud-rate long-distance transmission scenes such as 800G and 1.6 T-ZR. Specifically, firstly, a first bit set is obtained, the first bit set comprises d1 bits, d1 = 244664 * L, and L is a positive integer. Then, first FEC coding is carried out on the first bit set to obtain a second bit set, the second bit set comprises d2 bits, every 244664 bits in the first bit set are subjected to first FEC coding to obtain every 261086 bits in the second bit set, and d2 = 261086 * L; next, adding dpad filling bits to the second bit set to obtain a third bit set, dpad being an integer greater than or equal to 0; and performing second FEC coding on the third bit set to obtain a fourth bit set.

A system and method of reducing data loss in a system utilizing a bus protocol that does not support flow control is disclosed. The peripheral device utilizes a spill buffer which is used to capture any data sent by the host before the peripheral device is able to properly configure the DMA controller. Additionally, the peripheral device includes a recovery routine, which is a software program that parses the spill buffer and extracts any headers or payloads that are contained therein. Using the spill buffer and recovery routine, the baud rate of the bus interface may be increases without incurring any increase in data loss.

An adjustable bandwidth current-to-voltage converter for use in an optical receiver includes an input configured to receive current from a photodetector; an amplifier stage connected to the input; a feedback path connected to the amplifier stage and to an output, wherein the feedback path includes a feedback element and an operating mode switch configured to set one of photodetector amplifier with dynamic load (PADL) mode and an integrate-and-dump (I&D) mode. The PADL mode is for higher baud operation than the I&D mode.

The invention discloses a serial-port-based digital input and output control method and device and a storage medium, and relates to the technical field of electronic digital data processing.The serial-port-based digital input and output control method comprises the steps that if it is detected that a main board serial port is connected into a daughter card, serial port clock frequency multiplication is determined in response to programming interface calling; assembling the data to be transmitted into a communication instruction corresponding to the current frame; and transmitting the communication instruction to the daughter card through the serial port based on the baud rate determined by the serial port clock frequency multiplication. Therefore, the technical effect of reducing serial port data transmission delay so as to realize high-speed digital input and output expansion is realized.

The invention belongs to the technical field of charging piles, and discloses a charging pile CAN bus baud rate adaptive method, system and device and a storage medium. Comprising the following steps that internal CAN communication is used as a use object, a core node CMU evaluates the stability of a CAN communication link and dynamically adjusts the baud rate to optimize the communication performance by analyzing the accuracy of received frames, adaptive matching of the baud rate is carried out according to the accuracy of received messages for newly added nodes, and the communication performance is optimized. The communication efficiency and quality of each node in the CAN network are ensured, when the communication quality is reduced, the baud rate is reduced, errors in data transmission are reduced, and the accuracy and integrity of data are ensured; under the condition that the communication quality is good, the baud rate is improved, so that the data transmission speed is accelerated. Therefore, the communication efficiency can be improved, the time and resources required for data transmission can be reduced, and the technical problems that in the prior art, existing fixed-rate communication is prone to being interfered in a changeable application environment, and the communication efficiency is low are solved.

The invention discloses a burning management method and system for a burning upper computer. The method comprises the following steps: performing user identity verification according to user identity information of a burning applicant; after the user identity verification succeeds, performing burning permission verification on the to-be-burnt data; when the to-be-burnt data meets the burning authority, burning the to-be-burnt data, dividing the to-be-burnt data into a plurality of burning data frames, encrypting each burning data frame in sequence, and sending the encrypted burning data frames to the burning equipment; in the burning process, feedback data of the current burning data frame are received, burning verification is conducted on the current burning data frame according to the feedback data, and the burning baud rate of the next burning data frame is adjusted; after burning is completed, burning verification is carried out on the burning equipment, and the burning state of the to-be-burnt data is determined. Through the automatic and intelligent burning process, the burning efficiency and accuracy are improved. And the burning parameters are adjusted according to the burning condition, so that the burning stability and the burning speed in the burning process are ensured.

The invention discloses a single-serial-port multi-software sharing system and method. The method comprises the following steps: generating a plurality of virtual serial ports in an operating system; setting serial port parameters, wherein the serial port parameters comprise a baud rate, a data bit and a stop bit; configuring serial port forwarding parameters, namely selecting a physical serial port and setting data transmission parameters; establishing connection between physical serial ports and virtual serial ports and pairwise connection between the virtual serial ports according to the serial port forwarding parameters and the serial port parameters; receiving data from the physical serial port or the virtual serial port, performing analysis and error check, and removing error data to obtain serial port data; converting and formatting the serial port data to obtain processed data; and sending the processed data to the virtual serial port or sending the data from the virtual serial port to the physical serial port.

A system and method for monitoring signal quality metrics coupled with closed-loop control improves rectifier signal quality and stability. The closed-loop control passes the metric through a high-pass filter and captures error values. This signal is then passed to a controller to adjust rectifier settings. The measured signal, where signal quality is derived could be VRECT, FCLK, network coil measurements, is used for ASK demodulation, or the like. The controller identifies noise levels and noise types in real-time, and sets parameters of the rectifier to preserve system stability. The controller may set baud rates and preamble thresholds in a wireless power transfer system in response to identified noise levels and types.

Various examples of the present disclosure relate to a transmitter apparatus, device, method, and computer program, to a receiver apparatus, device, method, and computer program, and to corresponding source and destination devices and communication devices. The transmitter apparatus comprises a plurality of ports for data to be transmitted to a destination device, with each port being associated with a transmission data rate. The transmitter apparatus comprises processing circuitry configured to obtain data to be transmitted to the destination device via the plurality of ports. The processing circuitry is configured to multiplex the data to be transmitted to the destination device according to a weighted round-robin scheme to generate a multiplexed data stream. The weights of the weighted round-robin scheme are based on the transmission data rate of the respective port the data is obtained over. The processing circuitry is configured to transmit the multiplexed data stream to the destination device.

The invention discloses a control circuit of a serial port transceiver circuit and a clock synchronization method, and belongs to the technical field of data communication. The circuit comprises a clock synchronization circuit and a register value generation circuit, wherein the output end of the register value generation circuit is connected with the first input end of a first selector in a transceiver circuit; the clock synchronization circuit outputs a reference clock rising edge according to the received slow reference clock; the register value generation circuit counts a main clock based on the rising edge of the reference clock and outputs a self-adaptive baud rate count value; the first selector selects the self-adaptive baud rate count value and a configuration signal of the register block and outputs a selection signal; and the transceiving module drives data transceiving with the register group according to the clock corresponding to the selection signal so as to adjust the main clock. According to the circuit, the influence of the deviation between the preset value and the actual value on the communication precision can be reduced under the condition that the main clock of the equipment is unstable.

The invention discloses a photovoltaic inverter protocol intelligent identification method and system, electronic equipment and a storage medium, and the method comprises the steps: firstly monitoring an interaction message between an inverter collector and an inverter, carrying out the analysis and verification of different baud rates, so as to guarantee the obtaining of a correct analysis message, and then, carrying out the verification of the analysis message, thereby achieving the intelligent identification of the photovoltaic inverter protocol. According to the method, the message features extracted from the correct analysis message are matched with the message features pre-stored in the protocol identification feature library, if matching succeeds, protocol identification succeeds, compared with an existing traversal polling mechanism, the inverter protocol can be rapidly identified after equipment is powered on, the identification speed is greatly increased, and in addition, the efficiency is improved. The interaction message between the inverter collector and the inverter is essentially the communication signal, and the communication signal is analyzed and the communication characteristics are extracted for identification, so that the external interference in the communication process is effectively avoided, and the protocol identification accuracy is improved.

The invention relates to a clock calibration method and device. The method comprises the following steps: obtaining a corresponding relation between a reference clock frequency generated by an internal oscillator and a baud rate frequency of a universal asynchronous transceiver; obtaining a time sequence error of each bit time in a transmission period of the universal asynchronous transceiver according to the corresponding relationship, and accumulating the time sequence errors into an accumulated error; and compensating the accumulative error to calibrate the Baud rate frequency.

The invention discloses a Baud rate adjusting device and method for a photovoltaic inverter and the photovoltaic inverter, and the device comprises a data receiving and transmitting unit which is used for receiving pulse data transmitted by remote equipment; the detection unit is used for detecting high level duration in the pulse data; the calculation unit is used for calculating a target baud rate according to the high level duration; and the configuration unit is used for configuring a communication serial port of the photovoltaic inverter according to the target baud rate so as to adjust the communication baud rate of the photovoltaic inverter. According to the method, the communication baud rate of the photovoltaic inverter can be adaptively configured, so that the photovoltaic inverter can complete adaptive baud rate adjustment for different application scenes and different communication devices, the problem that the photovoltaic inverter cannot automatically adapt to the communication baud rates of various external devices is solved, manual intervention is reduced, and the communication efficiency is improved. And the communication efficiency and the expandability are improved.

A communication method and device based on a multi-circuit board system, and a medium, the method at least comprising the following steps: S100, authenticating a communication relationship between a main control board and each device module according to a communication authentication request; s200, based on a handshake protocol, judging whether the main control board and the device module can be switched to the same baud rate or not; if yes, the two communicate normally, and if not, S300 or S400 is executed; s300, based on a preset baud rate list, judging whether baud rate matching of the main control board and the device module is successful or not, if yes, performing normal communication between the main control board and the device module, and if not, executing S400; and S400, calculating the Baud rate predicted value of the device module, and sending test data to verify whether the communication state of the main control board and the device module is normal, and if yes, the main control board and the device module communicate normally. According to the invention, the baud rate of the device module can be automatically identified and matched, and the adaptability and communication reliability of the multi-circuit board system are improved.

The invention discloses an intelligent insulation parameter dynamic monitoring and regulation system based on a GD32 microcontroller, and belongs to the field of power electronic insulation monitoring. According to the system, a distributed monitoring network is constructed by taking GD32 as a core processor, a multi-channel time-sharing sampling and dynamic impedance measurement algorithm is integrated, GA / GB dual-channel independent sampling is realized by virtue of a state machine, and the sampling efficiency is improved by 80% compared with that of a traditional scheme. A programmable resistance network and a low-noise operational amplifier are adopted, 1 pF to 100 nF impedance matching and 5-200-time dynamic gain adjustment are achieved, an optical coupler switching dynamic impedance measurement method is originally created, four sets of voltage are adopted for time-sharing conduction of a solid-state relay, and 1.5% high precision is achieved through an improved voltage division model. LC-pi type filtering is adopted at a signal input end, and the high-frequency noise suppression ratio is larger than 20 dB; and a CAN module is newly added, so that a CAN2.0B extension frame and an adjustable Baud rate of 10k-1Mbps are supported. Actual measurement shows that the system can measure 10-65M omega insulation resistance in new energy and rail transit scenes, the dynamic response is smaller than or equal to 200ms, the system is suitable for the fields of medical equipment, industrial sensors and the like, and the overall performance is improved by three times compared with that of a traditional scheme.

The invention provides a dynamic adaptation method and system for a multi-mode power supply compatible charging pile system, and the method comprises the steps: building a multi-protocol physical layer compatible connection between a charging pile and a power supply module through a multi-communication interface layer, and receiving a data frame inputted by the charging pile; analyzing a baud rate, a check bit and an instruction set of the data frame, and identifying a charging pile protocol type and a power module protocol type; querying a matching mapping relationship between the charging pile protocol type and the power supply module protocol type in the dynamic adaptation matrix; if the matching mapping relation exists, data field conversion is executed, and a target protocol frame is generated; and if the matching mapping relation does not exist, starting a machine learning process, creating a temporary mapping rule, and effectively solving the problems of poor compatibility and high manual configuration cost of the charging pile and the power supply module in a traditional protocol mode through the modes of protocol analysis, intelligent matching and dynamic learning.

The embodiments of the present application relate to the technical field of radio communications. Provided are a radio-over-fiber communication apparatus, system and method. The radio-over-fiber communication apparatus comprises: an aggregation module, which is coupled to a remote radio head and is used for adjusting the baud rate of a feedback signal to obtain a compatible signal, combining the compatible signal and a received signal, so as to obtain an aggregated signal, and transmitting the aggregated signal by means of an optical fiber link, wherein the feedback signal is used for performing nonlinear compensation on a transmitted signal, and the frequency null of the compatible signal overlaps the frequency point of the received signal; and a splitting module, which is coupled to a baseband unit and is used for acquiring the aggregated signal by means of the optical fiber link, and splitting the aggregated signal into two signals, wherein the two signals are respectively used for the baseband unit to acquire the received signal and the feedback signal. In the solution provided in the present application, existing optical fiber resources in a radio-over-fiber communication system can be used to reduce the cost and power consumption of the system.

To provide a communication device, a communication system, and a communication method that can accommodate baud rate fluctuations with a relatively simple configuration.SOLUTION: A communication device includes a measurement unit that measures the duration of a known signal level using communication data transmitted from an opposing device, in which one or more predetermined bits are set to a known signal level, and an adjustment unit that adjusts the time per bit in asynchronous serial communication with the opposing device on the basis of the duration and the number of the one or more bits.SELECTED DRAWING: Figure 4

The invention discloses a serial data receiving method, a communication baud rate detection module and an asynchronous transceiving transmitter. The serial data receiving method comprises the following steps: acquiring a starting moment of a synchronization frame; sequentially receiving N byte segments of the synchronization frame, and obtaining a data transmission baud rate according to the duration from the specific edge of the N byte segments to the starting moment; and receiving the data frame based on the data transmission baud rate. Wherein the step of sequentially receiving the N byte segments and obtaining the data transmission baud rate according to the specific edges of the N byte segments and the starting moment comprises the following steps: calculating the ith baud rate based on the duration from the specific edge of the byte segment in the ith time sequence to the starting moment, and carrying out baud rate calibration on the ith baud rate based on the data change of the byte segment in the (i + 1) th time sequence; and determining the (N-1) Baud rate as the data transmission Baud rate after the calibration result meets the set requirement. According to the serial data receiving method, the error rate caused by clock skew can be effectively reduced, and the data transmission precision is improved.

The embodiment of the invention provides a baud rate adjusting method and device, electronic equipment and a storage medium. The method comprises the steps that the current environment temperature of the equipment and the environment temperature of the last moment are acquired; when the temperature difference between the current environment temperature and the environment temperature at the previous moment is greater than a preset temperature, determining a current baud rate coarse adjustment value, a current clock frequency and the sampling times for the communication rate of the equipment; determining a target baud rate according to the current baud rate coarse adjustment value, the current clock frequency and the sampling times; and determining the current baud rate, and adjusting the current baud rate to the target baud rate. Therefore, when the current temperature environment changes, the target baud rate can be determined in time according to the current baud rate coarse adjustment value, the current clock frequency and the sampling times, and the current baud rate is adjusted, so that the phenomenon that communication receiving or sending fails due to the fact that the error between the current baud rate and the actual requirement exceeds a certain range is avoided.

The invention belongs to the technical field of data communication, and provides a communication protocol system of an electric energy meter and an upper computer, which comprises the upper computer and the electric energy meter, the upper computer is used for acquiring transmission state data of a plurality of historical messages, determining a current baud rate according to the transmission state data, constructing a request frame, and sending the request frame to the electric energy meter according to the current baud rate; the electric energy meter is used for performing correctness verification on first key information in the request frame, if the verification is passed, sending a response frame to the upper computer, analyzing key identification information in the request frame, querying target data according to an analysis result, and constructing and sending a data frame to the upper computer according to the queried target data; and the upper computer is also used for analyzing the data frame to obtain the target data if the data frame is subsequently received and the second key information in the data frame passes the correctness verification after the response frame is received within the set duration. According to the scheme, the stability and convenience of a communication link between the electric energy meter and the upper computer can be improved.

The embodiment of the invention relates to the technical field of communication, in particular to a baud rate detection method, a control device and a storage medium, the method is applied to the control device, the control device is in communication connection with an upper computer through a communication interface, the upper computer is used for sending a baud rate detection frame to the control device, and the control device comprises a first counter. The method comprises the steps that a first count value of a first counter is acquired, the first count value represents a target period of a control device receiving a baud rate detection frame, the control device adopts the number of system clocks to represent the target period, and the baud rate of a communication interface is acquired based on the first count value. According to the embodiment of the invention, the target period of the control device for receiving the baud rate detection frame is obtained by counting through the first counter, so that the baud rate of the communication interface is detected, the baud rate detection precision is improved, the baud rate detection error of the communication interface can be reduced, and the user experience is improved.

The invention discloses a baud rate adjustment method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring pulse widths of adjacent edges in a synchronous byte field of an input signal in sequence through a universal input / output interface; and adjusting an initial baud rate according to the collected pulse widths to obtain a target baud rate. According to the Baud rate adjusting method provided by the embodiment of the invention, the Baud rate can be adaptively adjusted, and the reliability of communication by adopting an LIN communication protocol is improved.

The invention discloses a CAN baud rate automatic matching method. The method comprises the following steps: acquiring a first target baud rate; obtaining a second target baud rate between the communication node and the CAN bus based on clock synchronization detection; when the error between the first target Baud rate and the second target Baud rate is smaller than a preset value, judging that the two are successfully matched; and matching the communication between the communication node and the CAN bus according to the first target baud rate. The method can reduce the error rate of manually configuring the baud rates one by one and improve the efficiency.