3460 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.

An information handling system may include a hardware processor, a memory device, wireless systems, a power source, and plural Universal Serial Ports (USB) or the information handling system may be operatively coupled to a docking station with the plural USB ports. The information handling system may utilize a wireless dongle operatively coupled to the hardware processing device via one USB port that is wirelessly coupled to a wireless input / output device, the wireless dongle comprising a wireless dongle antenna to send and receive data wirelessly with the wireless device, a wireless dongle hardware processing device, and wireless dongle wireless interference detection firmware to detect fail parameters. Execution of code instructions of a wireless interference determination system by the hardware processor may determine combinations of fail parameters diagnose wireless interference from another USB port or other wireless devices as well as determine other wireless signal issues and generate remediation instructions.

The invention discloses a flash memory fault positioning method, system and device for a solid state disk and a medium, and relates to the technical field of storage. According to the method, the flash memory positioning firmware containing the preset positioning logic is generated, so that when the solid state disk breaks down, the flash memory positioning firmware can be used for replacing standard firmware to execute fault diagnosis. After the solid state disk breaks down, restarting and troubleshooting can be carried out by burning the flash memory positioning firmware into the equipment, so that the limitation that only log analysis is depended on is avoided, and the method is particularly suitable for the situation that fault logs cannot be obtained. The feedback information of each step can be obtained in real time through the information in the initialization process printed and output by the serial port, and the specific fault flash memory position is positioned according to the feedback data, so that the fault positioning accuracy and speed are remarkably improved.

The invention provides a satellite-borne computing center system, in particular to a satellite-borne computing center system with high performance and high computing power, which comprises a data interaction module, a task management module, an artificial intelligence AI module M1 and an artificial intelligence AI module M2. The data interaction module is an input and output interface for high-speed data processing; the task management module serves as a task scheduling center and distributes calculation tasks to the AI module; the artificial intelligence AI module M1 and the artificial intelligence AI module M2 adopt domestic and imported AI chips, and the artificial intelligence AI module can work in an RC mode and an EP mode, provides computing power guarantee for satellite-borne high-computing-power computing tasks, and has the characteristics of flexible expansion and agile deployment. All the modules are interconnected through a serial port management plane, a gigabit network control plane, a PCIE data plane and a power supply plane, and control and data interaction between processors are achieved.

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 provides an atomization control method and system based on a breathing machine, and belongs to the technical field of breathing gas instruments. The method comprises the steps that after receiving a handshake request signal from a second microcontroller, a first microcontroller establishes serial port communication connection with an atomizer based on the handshake request signal so as to receive an atomizer control protocol sent by the second microcontroller; wherein the handshake request signal is generated based on the operation that the communication wire is connected to the communication interface of the atomizer; the atomizer control protocol at least comprises an instruction required by the respirator to control the atomizer; determining a breathing stage corresponding to the patient according to the breathing information of the patient from the breathing sensor; and after an atomization control instruction is received and before a breathing phase enters, according to an atomizer control protocol, continuously generating an inspiration phase fog supply instruction and sending the inspiration phase fog supply instruction to the second microcontroller, so that the atomizer carries out synchronous fog supply along with the air supply airflow of the breathing machine based on a preset delayed fog outlet duration and stops fog supply in an expiration phase.

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 relates to a train-ground communication quality optimization analysis system based on a heavy haul railway vehicle-mounted radio station, and the system comprises a system initialization module which is used for reading parameters of related interfaces; the information acquisition module is used for acquiring parameters of an access network in real time through a train-ground communication radio station interface; the GNSS monitoring module is connected with the GNSS module through a serial port and is used for receiving GNSS information in real time; the geographic information acquisition module is used for acquiring related geographic map information from a third-party API (Application Program Interface) through a public network; and the edge calculation module is used for collecting the information of the information acquisition module and the GNSS monitoring module and performing calculation processing. According to the invention, GNSS information and communication information are comprehensively considered; in combination with a geographic API, the influence of the geographic environment on the communication condition is intuitively known; through a visual interface, the communication coverage condition of a trackside base station is visually displayed, communication results of multiple trains are efficiently checked, and the positions of sensitive areas such as packet loss and switching are visually checked.

The invention discloses a central computing platform, a camera module control method, a chip circuit and a vehicle. In the platform, a deserializer is used for transmitting video stream data from a camera module to a cabin chip and an automatic driving core; the cabin chip is used for enabling and controlling the deserializer to transmit video stream data after awakening and starting, and monitoring the automatic driving chip; when the automatic driving chip is started, the control right of the deserializer is transferred to the automatic driving chip through the serial interface; the automatic driving chip is used for taking over the control right of the deserializer, controlling the deserializer to continue to transmit video stream data and sending a first synchronous frame signal; according to the platform, the control right of the panoramic camera can be switched on demand in the cabin chip and the automatic driving chip, so that the requirements for camera data streams in different application scenes of a cabin and automatic driving are met, and meanwhile, the problems that a cabin AVM is started slowly, power consumption is large in a sentry mode scene, and driving safety is poor due to cabin chip failure are solved.

The invention discloses an SSD internal log storage method and system and a storage medium, and belongs to the technical field of solid state disks. The method comprises the following steps: S1, deploying encryption compression operation and decryption operation of an SSD firmware internal log on an upper computer, and standardizing an internal log format; s2, a firmware writing stage: according to a defined standard format, generating a log output code, replacing a character string with a character string ID and updating a character string mapping table; s3, when the SSD firmware runs, the generated standardized log is written into a Flash or a serial port; s4, the upper computer obtains the log; and S5, according to the character string mapping table and the log standard format, the upper computer analyzes the character string needing to be printed and the operation real-time parameters, and outputs the log plaintext according to the needed target format. The occupation of CPU or hardware resources in the log generation and storage stage is reduced; the character string is replaced by the digital ID, and in the compiling stage, the code space occupied by the system character string can be greatly reduced.

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 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 invention relates to a low-delay low-coupling multi-channel analog video signal processing system and method, electronic equipment and a storage medium, aiming at the limitation of the existing multi-channel video processing technology, hardware such as an analog signal receiving board, a controller, a video processing development board, a computing power development board and a serial port receiver and software technologies such as Python and Gstreamer are adopted. The method comprises the steps of signal receiving, frequency point screening, video processing and transmission, intelligent identification, layout customization and the like. The system achieves the positive effects of centralized computing power processing, accelerated calculation, rapid frequency point scanning, low-delay picture display, user-defined layout, convenient access to an intelligent identification module and the like, and is suitable for various actual scenes under analog video signals.

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 provides a communication method of multi-application communication based on a serial interface and a storage medium, the communication method is applied to a protocol stack of multi-application communication, a hardware layer of the protocol stack uses an asynchronous full-duplex serial interface, and the communication method comprises the following steps: establishing a point-to-point transmission channel between applications through the asynchronous full-duplex serial interface; a sending end sets sending numbers for data packets, the data packets are packaged into data frames through a data link layer of a protocol stack, and the data frames are sequentially sent through a transmission layer of the protocol stack according to priorities of point-to-point transmission channels of different applications in all the applications; and the receiving end receives the data frame and verifies the transmission integrity of the data packet according to the sending number. The technical problems that the design of an existing communication method in a multi-chip ECU board is complex, and communication of multiple applications in two chips through one interface cannot be achieved are solved.

The invention belongs to the technical field of airborne atmospheric detector equipment, and particularly relates to an airborne cloud water content detection system, which comprises a constant-temperature hot wire sensor, a cloud water content detection module, a cloud water content detection module and a cloud water content detection module, the pressure sensor is used for measuring atmospheric pressure; the temperature sensor is used for measuring the temperature in the cloud; the humidity sensor is used for measuring the humidity in the cloud; the data processing module is used for receiving the data of the sensor and processing and analyzing the data through a specific algorithm to determine the cloud water content; the data communication module is used for outputting the measured data and the calculated cloud water content data to a computer or other acquisition detector equipment through the Ethernet or a serial port; and the heating control module is used for keeping the detector in a preset standard working temperature range so as to ensure the measurement accuracy and the reliability of detector equipment, and has the effect of finely detecting the airborne cloud water content.

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 utility model discloses a cloud battery management monitoring device for a new energy automobile. The cloud battery management monitoring device comprises a shell, the main control board comprises a main control chip, an indicating lamp circuit, a crystal oscillator circuit, a plurality of reset circuits, a first filtering voltage stabilizing circuit, a serial port module, a USB module, a CAN conversion module, an SWD burning interface and a charging and discharging circuit. The slave control board comprises a battery pack acquisition module, a slave control chip, a daisy chain circuit, an AFE analog front end, an isoSPI communication interface, a battery equalization circuit, a discharge voltage detection circuit, a digital isolator and an NTC circuit; the slave control chip is connected with the battery pack acquisition module, the discharge voltage detection circuit, the daisy chain circuit, the digital isolator, the AFE analog front end, the isoSPI communication interface, the NTC circuit and the battery equalization circuit through pins. The utility model has the characteristic of improving the energy utilization rate of the battery pack.

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.