2534 results about "Serial port" 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 discloses a meteorological data transmission method based on an edge protection gateway algorithm, and belongs to the technical field of data transmission, and the method comprises the steps: building communication connection with meteorological observation equipment through a serial port service controller, carrying out the standardization processing of data, and carrying out the fragmentation storage and backup; generating a random seed by using a hardware random number generator, generating a round key through a key expansion function, performing encryption operation on the grouped data, and calculating a message authentication code; sending a password suite list to establish handshake connection, exchanging a key through elliptic curve operation, segmenting compressed data into records, and adding an authentication tag for transmission; identity authentication is carried out by adopting a digital certificate, and security protection is carried out on data through a firewall state table and a feature matching algorithm. Through the scheme of the application, the security of meteorological observation data transmission can be improved, data leakage, tampering and attacking are prevented, and the security and reliability of meteorological data are guaranteed.

The invention discloses a target tracking method fusing visual perception and motion control. The method comprises the following steps: improving a YOLOv8 model and pre-training the improved YOLOv8 model; s2, preprocessing an image acquired by a camera, inputting the preprocessed image into the YOLOv8 model trained in the step S1, and outputting a target bounding box and a target center pixel coordinate; target center pixel coordinates are transmitted to a development board of a pre-burning algorithm program through a serial port, the development board is designed according to a stepping motor mathematical model, sine acceleration and deceleration serve as the basis, PID control, sliding mode control and fuzzy control algorithms are fused, and code burning is generated after in-loop simulation optimization; and the development board drives a stepping motor to adjust the posture of the holder according to the target center pixel coordinate control instruction, so that the target stops moving after being kept in the view center. The problems that a traditional YOLOv8 model is large in target recognition error under the complex background, PID control is prone to oscillation under the nonlinear working condition, buffeting exists in sliding mode control, and response lags when fuzzy control is independently used are solved.

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 discloses a serial port communication method and application system for rapidly controlling lamp beads, and the method comprises the steps: constructing a command data packet; the host sends a command data packet to the slave through a serial port, and response timeout timing is started; after receiving the command data packet, the slave sends a response data packet to the host through the serial port; if the response timeout timing is greater than the preset threshold value, the host resends the command data packet; if the response timeout timing is not greater than the preset threshold value, judging whether the packet header of the response data packet is correct or not; if the packet header is correct, CRC is calculated and checked; if the verification is passed, analyzing a command acknowledgement code ACK, and judging an execution result of the slave according to the command acknowledgement code ACK; if the indication is successful, sending the next command data packet; if so, re-sending the command data packet; if verification fails, the host discards the response data packet; and if the packet header of the response data packet is wrong, the host discards the response data packet. According to the invention, the communication efficiency between the host and the slave is improved, and the delay when the lamp beads are controlled is reduced.

The invention relates to the technical field of communication, in particular to a USB-A interface and serial port dynamic switching and protection system based on an analog switch. Comprising a main control unit, the main control unit is used for planning dynamic switching and conflict coordination of a USB-A interface and a serial port as a whole, generating a conflict-free channel switching control instruction by integrating a dynamic priority scheduling algorithm and combining a USB data transmission real-time load, a serial port communication request emergency degree and a device historical interaction record fed back by a state detection unit, and sending the conflict-free channel switching control instruction to the state detection unit; the analog switch unit is driven to complete channel gating; an analog switch unit; a grading protection unit; a protocol adaptation unit; and a state detection unit. Priority scheduling is carried out by means of the main control unit in combination with multi-dimensional parameters such as the transmission load of the USB-A interface and the communication emergency degree of the serial port UART, communication channels of the USB-A interface and the serial port can be flexibly switched, the flexibility and adaptability of interface switching are enhanced, and the problem of switching limitation caused by a single triggering condition is solved.

The invention discloses a dual-redundancy servo controller and a main-standby autonomous switching method thereof, and belongs to the technical field of electric servo control. The controller comprises a host machine and a standby machine; each of the host and the standby machine comprises a DSP (Digital Signal Processor), an FPGA (Field Programmable Gate Array), a hardware ID (Identity) identification module, a motor power driving IPM (Intelligent Power Module) and a generator tripping instruction module which are in signal connection; the DSP and the FPGA are respectively connected with an LDO (Low Dropout Regulator) power module; the FPGA is in communication connection with the control system; the motor power driving IPM is connected with the execution mechanism; the DSP processors of the host and the standby machine are in signal connection; and the switching instruction modules of the host and the standby are in signal connection. The invention discloses a main / standby autonomous switching method for a dual-redundancy servo controller, which adopts a DSP and an FPGA to cooperatively detect and process faults, improves the fault detection rate by 5%, and reduces the possibility that the output of an IPM module is not turned off by 20% when a fault occurs; three heterogeneous redundant generator tripping modes of hardware generator tripping, serial port generator tripping and heartbeat generator tripping are adopted, and the reliability of main and standby independent generator tripping is improved by 20%.

The invention discloses an electricity meter data acquisition method and system based on a DLT698.45-2017 protocol. A dual-mode acquisition mechanism is constructed by expanding an active query communication protocol and a passive monitoring communication protocol in a gateway machine dictionary table, presetting an electricity meter model and data point parameters and developing a message encapsulation and analysis interface. According to the method, data points are grouped and framed according to serial ports and electricity meters, a message sending period is managed through a fixed / temporary sending queue, and PIID automatic self-increasing and FCS dynamic calculation are achieved through a serial port processing thread. The system can generate query messages according to a reading period in an active mode, and can monitor serial port data and filter cross-platform messages in a passive mode. The method can effectively improve the ammeter data acquisition efficiency and accuracy, reduces the system resource consumption, guarantees the data integrity and safety, is suitable for the ammeter data real-time acquisition of a smart power grid and a new energy scene, and is of great significance for the construction and development of the smart power grid.

The invention discloses a wireless cooperative control system and method for a multi-node brushless motor, and the system employs a layered architecture design, and comprises a main control layer, a drive layer, a communication layer, and a software layer. The master control layer is composed of a master node and serves as a task instruction scheduling center of the system, the driving layer is composed of N slave nodes, and N is larger than or equal to 3; the driving layer drives the brushless motor by executing an FOC vector control algorithm and monitors the state of the brushless motor; the communication layer constructs a star network topology based on an ESP-NOW protocol, a direct communication link is established between a master node and N slave nodes, and multi-node cooperative control is realized by adopting a dynamic channel switching mechanism and a timestamp alignment mechanism; and the software layer establishes communication with the main control layer through a USART serial port, receives the state data of the brushless motor of each slave node concentrated by the main control layer, and sends an instruction to the main control layer at the same time. Not only are wireless multi-node synchronization and anti-interference problems solved, but also high-precision motor control is realized.

The invention relates to an automatic test method and system for the zero offset of a hemispherical resonator gyroscope. The automatic test system composed of a double-shaft servo turntable control module, a gyroscope control module and a PC (Personal Computer) upper computer is built; a servo turntable control instruction and a gyroscope control instruction are sent through a serial port according to a certain program through an automatic test logic built in a PC upper computer, a gyroscope vibration mode angle is controlled to be automatically switched from 0 degree to 360 degrees (the step length can be set), and turntable angle and gyroscope vibration mode angle data under each vibration mode angle are synchronously collected; and substituting the acquired data into the error model, completing zero offset error parameter identification by adopting a nonlinear least square method, generating an error compensation formula, and writing the error compensation formula into a gyroscope control unit in real time to realize compensation.

The invention provides an automatic testing device for an electrical interface of hardware equipment, which comprises a core control unit, an AT32F415CBT7 single chip microcomputer, an RS232 serial port testing interface and an RS485 serial port testing interface, the test unit comprises eight paths of optical coupling isolation switching value input / output interfaces, a test module power supply input interface, a 24V power supply input interface of equipment to be tested, a state indication LED module and a vacancy detection module which are respectively used for host communication and equipment test, and a travel switch is adopted to detect the occupation state of the test unit, wherein the 24V power supply input interface of the equipment to be tested is powered by an ejector pin. According to the invention, the efficiency and accuracy of hardware equipment interface function testing can be improved, the labor cost is reduced, and batch detection requirements are met.

The invention relates to the technical field of satellite time service, and provides a satellite time service system and method for preventing cheating and suppressing interference, and the system is characterized in that double GNSS radio frequency modules are integrated in a GNSS radio frequency board, and each GNSS radio frequency module is responsible for receiving a BDS satellite signal; a double-BDS signal deception jamming recognition module is integrated in the satellite receiving board, and each BDS signal deception jamming recognition module is provided with a GNSS signal suppressing jamming detection method and a GNSS signal deception jamming detection method so as to perform jamming detection on one path of BDS satellite signals to obtain a satellite signal jamming state; the CPU is used for reading serial port message data for the two satellite signal deception jamming identification modules and analyzing UTC time; meanwhile, according to the satellite signal interference state, a radio frequency switch instruction is determined; and the FPGA is used for controlling the two GNSS radio frequency modules to output or reject BDS satellite signals according to the radio frequency switch instruction.

The invention discloses a method and a system for reducing data transmission packet loss rate of a USB (Universal Serial Bus) virtual serial port and related equipment. The method comprises the following steps: setting an annular receiving buffer area for the USB virtual serial port; initial data receiving is carried out on the annular receiving buffer area according to a default capacity value; monitoring the residual capacity of the annular receiving buffer area in a default capacity value state in real time; when the residual capacity is smaller than a preset unit capacity value, dynamically increasing the expansion capacity of a plurality of unit capacity values from the redundant capacity of the annular receiving buffer area; in response to capacity expansion each time, judging whether the current total capacity value of the annular receiving buffer area is greater than a critical value or not; and if the current total capacity value is greater than the critical value, generating alarm information to prompt a user to modify the parameters of the annular receiving buffer area by utilizing the macro definition. According to the invention, the annular receiving buffer area is adopted to manage the data stream, the annular receiving buffer area can dynamically adjust the capacity based on the received data, and timely reminding can be carried out when the capacity is not enough, so that the packet loss rate of data transmission is reduced.

The invention provides a multi-serial-port intelligent switching method and system and a storage medium, and relates to the technical field of servers. The method comprises the following steps: initializing serial port configuration of the embedded equipment, and connecting default output of the embedded equipment to a public serial port; receiving a serial port data stream input by a user terminal through the public serial port; monitoring whether the data stream contains predefined special switching characters or not in real time through character detection logic; when the special switching character is monitored, analyzing the special switching character to determine a channel number of a target CPU serial port based on a predefined rule; dynamically switching the output of the public serial port to a logic channel corresponding to the target CPU serial port through serial port switching logic according to the channel number; and outputting the identification information of the currently connected CPU serial port to the user terminal to complete the switching operation. According to the method, the operation process is simplified, rapid switching among different serial ports is realized, and the operation efficiency and the user experience are improved.

The invention discloses a communication method and system of a serial port network, a storage medium and a program product, and relates to the technical field of communication, the method comprises the following steps: receiving a serial port data packet through a first serial port or a second serial port, and analyzing the serial port data packet to obtain a source address, a destination address and request data; when the destination address is greater than the local address, forwarding the serial port data packet through the second serial port; when the destination address is smaller than the local address, forwarding the serial port data packet through the first serial port; when the destination address is equal to the local address, executing a corresponding task according to the request data, and generating response data; packaging the response data by taking the local address as a response source address and the source address as a response destination address to generate a response data packet; and returning the response data packet through the first serial port or the second serial port receiving the serial port data packet. According to the invention, the communication efficiency of serial port communication among multiple devices can be improved.

The invention relates to the technical field of virtual machines, in particular to a method for acquiring Guest OS running state information under Jailhou.The method comprises the steps that a Trace area is newly added for each Guest OS on an ivshmem memory communication model, and the Trace area comprises a conf area and a running state area; before the Host Linux starts the Guest OS, the system running state information of the Guest OS to be checked is written in the conf area of the corresponding Trace area; after the Guest OS is powered on, default Trace configuration information is read, and a corresponding Trace area address is obtained; and according to the Trace region address, reading the system running state information of the Guest OS to be checked, and writing the corresponding running state information into the running state region of the Trace region according to a certain format. Through the scheme, the problem that the Guest OS running state information is inconvenient to obtain by using a traditional method based on a physical serial port or a physical network port in a Jailhouse environment is solved.

The invention discloses a fault module restarting system and a power supply system, and relates to the technical field of servers, the fault module restarting system comprises a first controller, a power supply module, a serial port fuse module, a fan fuse module and a short circuit detection circuit, performing short circuit detection on a serial port device corresponding to the serial port fuse module and a fan corresponding to the fan fuse module, and sending a short circuit detection signal to a first controller through a first short circuit detection output end or a second short circuit detection output end; the first controller is used for responding to the short circuit detection signal to determine that the system breaks down, determining the fault type of the system, and controlling the power module or the first fuse module to be restarted according to the fault type. The reliability of the service provided by the server can be improved.

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 provides a satellite-borne computing cluster design scheme with an automatic operating system repairing function. According to the scheme, the heartbeat information and serial port output data of each computing node are synchronously monitored, the operation state of the operation system is accurately judged, node faults are diagnosed, meanwhile, an automatic operation system reinstallation mechanism is configured in the scheme, once the faults are detected, the control node automatically triggers the operation system reinstallation process of the fault computing node, and the operation system reinstallation efficiency is improved. In addition, in order to ensure the reliability of the repair operation, the scheme adopts a multi-PXE server redundancy mechanism, and a plurality of PXE servers are deployed to ensure that the system can still quickly acquire a boot file and a mirror image file from other servers even if part of the servers fail, so that a computing node can accurately acquire required resources, and the reliability of the repair operation is improved. And a solid foundation is laid for stable operation of a satellite-borne computing cluster.

The invention discloses a laser marking control card and a laser processing system, and the control card comprises a kernel module and a bus interconnection module connected with the kernel module. The control card is also provided with an input power interface for receiving an external 24V direct-current power supply, an Ethernet interface for being connected with external EtherCAT equipment, an EtherCAT interface for being connected with an industrial personal computer and a serial port for debugging; the control card is also provided with a galvanometer control interface, a motion shaft control interface and a shaft limiting interface; wherein the galvanometer control interface is connected with a galvanometer, the motion axis control interface is connected with a motion platform, and the laser interface is connected with a laser for real-time synchronous linkage control. Aiming at the problems of an existing laser marking control card, high integration and real-time synchronous linkage of motion control, galvanometer control and laser control are achieved through the integrated control card, and the speed, precision and intelligent level of laser processing are remarkably improved.

The invention discloses a data transmission method, a server system, equipment and a medium, and relates to the technical field of data transmission, and the method comprises the steps: determining a sampling pulse corresponding to first target data, obtaining a plurality of sampling pulses in a segment through the segmentation processing of the sampling pulse, and taking the plurality of sampling pulses as target sampling pulses, so as to improve the accuracy of collecting effective data. According to the method, interference signals caused by corresponding jitter instability conditions under serial port hot plugging are avoided, and the target sampling pulses obtained after segmentation processing are used for keeping data stability and avoiding high possibility of doping of the interference signals at the same time. And determining the second target data based on the target sampling pulse, and improving the anti-interference performance of the second target data under the bit. The technical problems that normal serial port use cannot be maintained when jitter interference occurs in the hot plug process, and even the whole machine crashes can be solved, and the technical effect of improving the anti-interference performance of data is achieved.

The invention provides an FPGA (Field Programmable Gate Array) implementation method for receiving and transmitting 16-path CAN (Controller Area Network) and 16-path serial port data. The FPGA implementation method comprises the following steps of: constructing a hardware architecture suitable for efficiently receiving and transmitting the 16-path CAN and 16-path serial port data by utilizing the characteristic of cooperative work of a processing system PS of XC7Z045FFG900-2 and a programmable logic PL; a CAN bus controller on the PL side is configured; configuring a serial port transceiver chip at a PL side; a ping-pong buffering function on a PL side is realized; establishing register mapping; and a double-AXI interface collaborative interaction mechanism of the PL side and the PS side is realized. The method has the beneficial effects that the ping-pong buffer technology and the parallel processing capability of the FPGA are adopted, so that efficient concurrent processing of 16-path CAN and 16-path serial port data is realized; through reasonable hardware design and register configuration, the stability of communication between the CAN bus and the serial port is ensured; based on the programmable characteristic of the FPGA, the system is flexibly configured and adjusted according to different application requirements; the advantages of an XC7Z045FFG900-2 hardware platform are fully exerted, and the resources of the PL side and the PS side are reasonably distributed and utilized.

The utility model discloses a serial port burning circuit, which comprises an MCU (Microprogrammed Control Unit) module, a serial port communication module and a conversion module, two ends of the conversion module are respectively connected with the serial port communication module and the MCU module; the serial port communication module is also connected to the MCU module; the conversion module is used for controlling the MCU module to be switched between a burning state and a working state; and the serial port communication module is used for receiving a control signal from an external communication interface so as to control the conversion module according to the control signal, and is used for transmitting burning information to the MCU module in a burning state. According to the serial port burning circuit, convenient switching between a burning state and a working state is realized through division and cooperation of the conversion module and the serial port communication module, the circuit state does not need to be changed by manually pulling pins with pliers, the burning stability and safety are improved, and the burning efficiency is improved.

The invention relates to the technical field of communication equipment operation and maintenance, in particular to a serial port equipment firmware upgrading method and system. The serial port equipment firmware upgrading method comprises the steps that an upgrading task instruction issued by a remote management platform is received, and after equipment identity verification and upgrading file integrity verification are executed, system protection measures are started; creating a security isolation sandbox environment, forbidding a high-risk function module in a script execution environment, and defining addressing parameters of target serial port equipment; standard scripts are loaded, and serial port read-write, file operation and state reporting type security interaction interfaces are injected; calling a mode switching function of the standardized script, so that the serial port equipment is switched to a firmware upgrading mode from an operation mode; cyclically calling a data transmission function of the standardized script to transmit firmware data in blocks, and synchronously implementing timeout monitoring; and after upgrading is completed or abnormal interruption occurs, the security isolation sandbox environment is destroyed, the original business is recovered, and an upgrading result is reported to the remote management platform.

The invention provides a decoupling type parallel swing platform which comprises a fixed platform, a movable platform, a first driving branch and a second driving branch, the movable platform is movably connected in the fixed platform, one end of the first driving branch and one end of the second driving branch are connected to the fixed platform, and the other end of the first driving branch and one end of the second driving branch are connected to the fixed platform. The other end of the first driving branch and the other end of the second driving branch are connected to a cross-shaped swing rod of the movable platform respectively, the PC outputs signals to a driver through a serial port to drive the first linear motor and the second linear motor to move, then the parallel-connection swing platform is driven to move, and the swing angle measuring system captures the motion swing angle of the parallel-connection swing platform and measures the swing angle of the parallel-connection swing platform. And the information is fed back to the PC to complete control. According to the parallel swing platform, structural decoupling is achieved, rotation around the X axis and rotation around the Y axis can be considered respectively, different linear motors can be controlled conveniently, the control difficulty is reduced, and the control precision is improved conveniently.

The invention discloses a peripheral interface framework system and method easy to develop and transplant, and the system comprises a peripheral equipment driving module which is used for interacting with peripheral equipment and providing data transmission and reception; the serial interface core module is connected with the peripheral equipment driving module and is used for receiving a peripheral equipment driving request and selecting an adaptive serial interface adaptive module to perform equipment communication; and the serial interface adaptation module is connected with the serial interface core module through an interface bus and is used for managing the interface bus and configuring an interface register and a pin. According to the main technical scheme and effects, the system has the beneficial effects that each module of the system can be independently developed and tested by dividing the framework system into a plurality of layers; due to the hierarchical design, other parts of the system cannot be influenced when the peripheral equipment is newly added or modified, so that the development process is greatly simplified, and the development efficiency is improved.

The invention discloses a three-degree-of-freedom ultrasonic motor driving control method. A three-degree-of-freedom ultrasonic motor comprises a signal generation module, a key control module, a power amplification module, a communication module, a grating ruler analysis module, a control algorithm, a data processing module, a power amplification circuit, a matching circuit and a voltage and current sampling circuit. The signal generation module outputs six paths of PWM waves with adjustable frequencies, phases and duty ratios, the control algorithm module performs adjustment through a control algorithm according to operation parameters of an ultrasonic motor fed back by a grating ruler, the key module is used for manual control, and the communication module is composed of USART logic and DMA logic. A control algorithm and data processing are generated by a single-chip microcomputer, detection and servo control are carried out through a communication USART module, and real-time monitoring, power amplification and matching are carried out on a serial port assistant of an upper computer, and a voltage and current sampling circuit drives and stabilizes operation of the ultrasonic motor. According to the invention, the amplitude modulation precision is below 4mv, and the stability is higher through a closed-loop control algorithm.

The invention provides a data flow control method for TDD uplink and downlink time slot ratio, and belongs to the field of data flow control, and the method comprises the following steps: a 5G module establishes communication connection with a 5GNR module through a serial port AT instruction, periodically sends a synchronization information request instruction, and receives wireless network synchronization information from the 5GNR module; the synchronization information comprises time synchronization data, frame structure data and frame structure time information data, the time synchronization data is used for calibrating system clock skew, the frame structure data comprises two formats of a single-bit frame and a multi-byte frame, the single-bit frame is defined as a fixed-length frame only containing a single data bit and is used for transmitting a basic synchronization state identifier, and the multi-byte frame is defined as a multi-byte frame. The multi-byte frame is defined as an extended data frame comprising a plurality of independent bytes, and each byte carries a specific parameter value for transmitting a TDD slot configuration parameter.

The invention discloses a multi-serial-port peripheral automatic identification and protocol adaptive communication method in an embedded system. The method comprises the following steps: monitoring physical connection states of a plurality of serial ports in the embedded system; performing communication parameter self-learning on the target serial port, and determining a baud rate and a data format matched with the access equipment; automatically matching the features of the initial data frame with a plurality of protocol feature templates stored in a protocol feature library preset in the embedded system to obtain one or more candidate communication protocols; constructing a verification instruction by using a frame format of the candidate communication protocol, sending the verification instruction to the access equipment, performing interactive verification, and confirming a final target communication protocol according to a response result of the access equipment; and the self-adaptive communication link establishment aiming at the access equipment is completed. The method has the advantages that the problems that manual configuration is needed, deployment is tedious and errors are prone to occurring during mixed connection of multi-protocol equipment are solved, and the flexibility, expandability and deployment efficiency of an embedded system are remarkably improved.

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.