1386 results about "Serial port" patented technology

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 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 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 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 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 relates to the field of mobile robots, in particular to a four-wheel omni-directional robot chassis navigation control device and method.The four-wheel omni-directional robot chassis navigation control device comprises a chassis structure and a driving system, a radar and a mechanical arm are arranged on the chassis structure, and omni-directional wheels are installed in the centers of the four side walls of the chassis structure; the axes of the omni-directional wheels are parallel to the edge of the chassis structure, the axes of the adjacent omni-directional wheels are perpendicular to each other, the diagonal direction of the chassis structure serves as the advancing direction of the robot, the advancing direction of the omni-directional wheels and the overall advancing direction of the chassis structure form an included angle of 45 degrees, and the driving system comprises four motors with Hall encoders. The four motors independently drive the independent omnidirectional wheels, the upper computer and the lower computer conduct instruction issuing and state feedback through UART serial port communication, and the problems that at the present stage, steering is conducted by depending on steering engine driving or positioning is conducted through a single sensor, the structure is complex, the anti-interference capacity is limited, and operation is complex are solved. And high precision is difficult to maintain in a dynamic environment.

The invention discloses a method for rapidly detecting OverHang of a positive electrode and a negative electrode of a laminated battery, and relates to the technical field of laminated battery detection.The method comprises the steps that a micro-focus X-ray tube is properly modified, and an electron beam deflection system is installed; the electron beam deflection system realizes electron beam deflection scanning by controlling the current of a deflection magnetic field coil by a remote computer through a communication serial port; the laminated battery is positioned in a reference coordinate system of the detection platform through the clamping tool, it is ensured that the angular position of the battery and the relative position of the X-ray source are kept consistent during detection each time, the X-ray source and the detector are relatively fixed, and multi-angle projection is achieved through electron beam deflection. According to the method for rapidly detecting the OverHang of the positive electrode and the negative electrode of the laminated battery and the method for controlling the deflection of the electron beam to generate the multi-view projection X-ray by the change of the electromagnetic field, a multi-view two-dimensional picture of the laminated battery is obtained, the OverHang data of the laminated battery can be conveniently and rapidly obtained without a complex CT (Computed Tomography) method, and the method has high application value.

The invention provides an equipment debugging system based on a serial port, which relates to the technical field of data processing, and comprises a server side and a client side which are in communication connection through the serial port, the server side comprises a memory, a command parser, a command distributor and a function executor; the memory is used for storing a debugging command registry; the command parser is used for parsing a protocol data packet which is transmitted through a serial port and comes from a client side, querying a debugging command registry and determining a debugging function corresponding to a command ID; the command distributor is used for distributing debugging functions to the function executor; the function executor is used for executing operation corresponding to the debugging function; the client side comprises a compiler, a description file analyzer and a graphical user interface; the compiler is used for generating a debugging description file after compiling the MCU program; the description file analyzer is used for analyzing the debugging description file, generating a protocol data packet and sending the protocol data packet to the server side through a serial port; the graphical user interface is used for displaying debugging information.

The application provides a CPU platform fault log recording method and device, comprising: receiving the running log data stream output by the CPU debugging serial port in real time; collecting the sampling value of the key power supply voltage and monitoring the hardware signal line to obtain the restart event signal and the shutdown event signal; packaging into a structured log recording unit; and writing the compressed log data block back to the flash memory; in response to the external reading instruction, reading the log data block from the specified log area of the flash memory and transmitting to the host end diagnostic tool; reorganizing and displaying in time sequence for fault analysis. The application can construct a log recording channel completely independent of the main CPU and operating system without increasing any additional hardware cost, ensuring that even in the most extreme system failure scenario, the complete context information at the fault moment can be reliably saved, thereby greatly improving the diagnosis efficiency and accuracy of the occasional fault.

The invention provides a Tiantong satellite transmission rate improving method and device based on a point-to-point protocol, relates to the field of satellite communication, and solves the technical problems of low bandwidth utilization rate and low multi-service concurrent processing efficiency. The method comprises the following steps: configuring an APN through an AT instruction set, starting PPP dialing, and establishing a physical connection with a Tiantong satellite; a plurality of virtual serial port channels are created on a single physical serial port channel by using a CMUX protocol, and each channel bears an independent PPP link. Compression type HDLC packaging is carried out on a PPP protocol stack, a frame header is reduced to 2 bytes, and a dynamic FCS verification mechanism is started. And sending the data fragments to the virtual channels through an adaptive time slot allocation algorithm according to the service priorities. And performing forward timestamp mark pre-compensation on the sending time sequence based on the 550ms satellite time delay prediction model. And sorting and recombining the channel data packets at a receiving end, and restoring the original data stream. The method is used in the Tiantong satellite transmission process.

The invention relates to a CAN bus control type PS I5 transceiver module which comprises a main control module, a communication interface is composed of a CAN communication module and a serial port, the CAN communication module is used for communicating with other equipment, and the main control module is connected with an upper computer through the serial port for communication; the power supply module reduces the direct-current 12V voltage to the working voltage of the single chip microcomputer to supply power to the main control module; the PS I 5 transceiver chip is respectively connected with the sensor and the main control module, and is used for receiving a Manchester encoding electric signal of a PS I 5 bus and sending an electric signal conforming to the PS I 5 standard to the sensor; the master control module is used for receiving and storing sensor data corresponding to different states and events. Compared with the prior art, CAN and serial communication are combined with a power-down storage state flag bit, so that the equipment can be compatible with a plurality of pieces of equipment for coordinating work. The non-PS I5 production equipment can be refitted into PS I5 sensor production equipment as long as the non-PS I5 production equipment is provided with a CAN communication interface, reading, configuration, analysis and diagnosis of a PS I5 sensor can be carried out, and the production link of the PS I5 sensor is effectively supported.

A method for measuring the dynamic frequency of a high-precision crystal oscillator comprises the following steps: 1) setting a target frequency on an upper computer, communicating with a single chip microcomputer in a lower computer through a serial port, and sending the target frequency to the lower computer; and 2) acquiring a signal of the tested wafer in the alternating electric field. And 3) making a frequency lookup table. And 4) calibrating the signal of the tested wafer. And 5) carrying out AD conversion on the calibrated voltage signal, outputting a code of the calibrated voltage signal to a single-chip microcomputer, finding out a frequency corresponding to the code, sending the frequency to an upper computer through a serial port, and displaying the measured frequency of the quartz wafer. According to the invention, high-precision and low-cost frequency measurement can be realized.

The invention provides a data receiving and processing method based on serial port idle interruption and memory direct transmission. The method comprises the following steps of: S1, initializing a multi-stage buffer area, enabling idle interruption and DMA (Direct Memory Access) by a UART S2, serial port receiving and DMA transmission are started; s3, automatically transmitting data to an active buffer area by a DMA background, identifying frame ending with 1.5 times of character idle duration through idle interruption, and detecting whether communication of a serial port is abnormal or not in combination with a heartbeat packet and overtime detection design; s4, the effective length of the data is calculated through the address offset, the data is copied to the to-be-processed buffer area, the buffer area is switched, and finally the application layer is notified; s5, the application layer carries out CRC verification on the data, the data is processed if the CRC verification passes, and the data is retransmitted if the CRC verification fails; and S6, initializing the serial port and the DMA when the serial port communication is judged to be abnormal. According to the method, through idle interruption, DMA, a multi-level buffer area and exception recovery, efficient receiving of the variable-length data is achieved, CPU occupation is reduced, and communication reliability is improved.

The invention discloses a serial port switching control circuit, a serial port switching control method and a server, and relates to the technical field of servers, through cooperative work of a cache module, an output control module and a switching module, when a hot key switching signal is detected, a data output path is cut off immediately, a hot key code stream is prevented from being transmitted to an upper-layer system in an unvarnished manner, and the switching efficiency is improved. And system abnormal response and serial interface messy codes are effectively avoided. And after the switching is completed, recovering the data path, and transmitting the cached serial port data. According to the design, the problem of signal interference during serial port switching is solved from the hardware level, and the reliability and stability of multi-node debugging of the artificial intelligence server are remarkably improved.

The invention provides a data compression method, apparatus and device, and a storage medium. The method comprises the steps of obtaining an original data stream transmitted through a serial port; determining the data type of the original data flow according to the original data flow; determining a corresponding target compression algorithm according to the data type; compressing the original data stream according to the target compression algorithm to obtain compressed data; the defects of low efficiency and even data expansion during data abrupt change in a fixed compression mode are effectively overcome, and the data transmission efficiency and the bandwidth utilization rate of serial port communication in a resource limited environment are remarkably improved.

The invention relates to the technical field of communication machine room monitoring, and discloses a communication machine room intelligent monitoring system based on edge computing and an implementation method thereof. The method comprises the steps that an edge gateway is connected with intelligent equipment through a network interface, and a monitoring unit is connected with traditional equipment through a serial port interface; when new equipment is accessed, identifying a protocol type through the edge gateway and generating communication parameter configuration; serial port equipment data is acquired according to the communication parameter configuration, the data acquisition time deviation between the edge gateway and the monitoring unit is calculated, when the data acquisition time deviation exceeds a preset threshold value, the edge gateway acquires standard UTC time, and a first local clock of the edge gateway and a second local clock of the monitoring unit are calibrated as the standard UTC time. According to the communication machine room monitoring system, a collaborative division mechanism of the edge gateway and the embedded monitoring unit is established, so that full-coverage acquisition of the network equipment and the serial port equipment is realized, and the intelligent level and the operation and maintenance efficiency of the communication machine room monitoring system are further improved.

The invention discloses a standard output serial port based on an FPGA (Field Programmable Gate Array) and a working method thereof, a medium and equipment, and relates to the technical field of signal communication, the standard output serial port comprises a synchronous serial port control module, an FIFO (First In First Out) module, a frequency division module and a standard serial port output module, the synchronous serial port control module is respectively connected with the FIFO module, the frequency division module and the standard serial port output module; the synchronous serial port control module is used for instantiating and calling the FIFO module, the frequency division module and the standard serial port output module, the FIFO module is used for reading and writing an input signal, the frequency division module is used for improving the precision of aligning a synchronous signal, and the standard serial port output module outputs a serial signal based on the state of a state machine. According to the invention, the serial port output module can be universally applied to the requirement of converting parallel data into serial data. Compared with a CPU for realizing serial port communication, the method has the characteristics of lower clock jitter, high-precision alignment and predictable alignment error, and the reliability and certainty of the method have better guarantee capability.

The invention relates to the technical field of voice recognition and natural language processing, in particular to a vehicle type robot voice navigation control system and a control method thereof.The method takes voice as a man-machine interaction entrance and comprises the following steps that S1, environment audio is continuously monitored and preprocessed, including noise reduction, reverberation removal, pre-emphasis and framing windowing; when a preset wake-up word is detected, sending a wake-up signal to a main control unit through a serial port, and entering a command identification window with a fixed duration; s2, in the command recognition window, performing automatic voice recognition and natural language processing on the input voice, analyzing user intentions and key entities, and classifying analysis results into a mapping instruction, a motion control instruction or a navigation instruction; according to the invention, an integrated system with off-line voice as an entrance, a modular architecture as a core and closed-loop control and multi-mode feedback as guarantee is constructed, so that the limitation of the prior art is effectively overcome.

The invention relates to the technical field of numerical control machine tool intelligent manufacturing and industrial data collection, in particular to a machining data collection method and system applied to a numerical control machine tool, and the method comprises the following steps: S1, the classification and access scheme design of the numerical control machine tool: dividing the numerical control machine tool into a class I intelligent new machine tool, a class II semi-intelligent machine tool and a class III old dumb equipment according to the digitization capability, a classification access scheme of combination of a general protocol adapter, a serial port-Ethernet converter and a non-intrusive sensor is respectively adopted to realize data access of heterogeneous and old equipment; uniform access of 10 + brand numerical control machine tools is supported, the data intercommunication rate of heterogeneous equipment reaches 100%, the problem of'information isolated island 'is solved, six types of equipment states are recognized, and the OEE calculation precision is improved to + / -2% and is improved by 5 times compared with a traditional method.

The invention discloses a rapid decoding method suitable for multi-component serial port data, which can be used for rapid data analysis of an aircraft which is complex in composition and adopts serial port communication during joint test, semi-physical simulation and external field test, and improves the data analysis efficiency. The decoding method has the advantages of being easy to use, fast in decoding, convenient to analyze and the like. The decoding method is characterized by comprising the steps that a serial port data decoding protocol is set (only when software is used for the first time or a communication protocol needs to be changed); setting a path where the to-be-decoded serial port file is located; parameters such as data formats needing to be stored are set; and sequentially performing data reading and decoding on the serial port file needing to be decoded, and storing the decoded data. The decoding method has the characteristics of simplicity in use, rapidness in decoding, convenience in analysis and the like.

Some embodiments of the invention provide an intelligent set top box and a dynamic identification method for a Bluetooth module, and the method can respond to a power-on event of the Bluetooth module, initialize a serial interface, and control the serial interface to send an information acquisition command to the Bluetooth module. And receiving response information fed back by the Bluetooth module aiming at the information acquisition command, and loading the Bluetooth system component in the Bluetooth driving directory according to the response information. Wherein the response information comprises attribute information used for indicating the type of the Bluetooth module, the Bluetooth system components comprise a Bluetooth protocol stack library and a driver library which are suitable for the Bluetooth module, and the Bluetooth system components corresponding to different attribute information are stored in different Bluetooth driver directories. According to the method, the type of the Bluetooth module can be automatically identified after the Bluetooth module is powered on, and the Bluetooth system component matched with the Bluetooth module is loaded, so that the Bluetooth module is accurately driven in a multi-Bluetooth-module scene, the limitation of multiple Bluetooth modules is reduced, and the user experience is improved.

The invention discloses a hybrid deployment method and system based on a Jailhouse virtualization technology, a terminal and a storage medium, and the method comprises the steps: determining a target system file and a target serial port, and carrying out the configuration, and obtaining an initialized virtual environment; a first configuration file in the initialized virtual environment is obtained, hardware resource allocation is carried out, a first running unit is obtained, and a preset universal operating system is deployed in the first running unit; a second configuration file in the initialized virtual environment is obtained, hardware resource allocation is carried out, a second operation unit is obtained, and a preset real-time operation system is deployed in the second operation unit; and establishing communication connection between the first operation unit and the second operation unit, obtaining performance data acquired by the first operation unit, and performing visual display through the second operation unit. According to the method, the universal operating system and the real-time operating system are deployed in a mixed mode, and cooperative work of the two operating systems can be achieved.

The invention relates to the field of high-speed serial interface chips, and discloses an error calibration method of an ultra-high-speed phase interpolator. The method comprises the steps of amplitude calibration, edge searching, reference clock delay calibration, multi-phase cyclic calibration, linear interpolation and the like, a reference clock rising edge zero crossing point is used as a high-precision time reference, delay control words of a selected discrete phase are adjusted one by one, a mapping lookup table covering a full-phase range is generated through linear interpolation, and the time delay control words of the selected discrete phase are adjusted one by one. And compensation of the nonlinear error of the phase interpolator is realized. According to the invention, high-precision linearity calibration can be completed before normal operation of the chip, the clock recovery precision is significantly improved, the nonlinear error is reduced from + / -1.5 LSB to + / -0.5 LSB, the error rate of the system is reduced, and the power consumption and the area overhead are low.

The invention relates to the technical field of integrated circuits and provides a physical IP verification device and method, computer equipment and a medium. The physical IP verification device comprises a first reusable multimode test sequence generator, a verification component physical interface, a second reusable multimode test sequence generator and a verification component serial interface. Therefore, different simulation requirements and scenes such as accelerated simulation efficiency and integrated verification can be considered, protocol consistency verification, functional verification completeness of a physical layer subsystem level and standardized protocol verification are supported, and abundant test vector sets are provided; according to the method, the requirements of butt joint test scenes and completeness verification of different levels such as a transaction layer, a data link layer and a physical layer can be met, debugging interaction interfaces and debugging means with rich levels are supported, different physical interface versions and interface data bus bit widths are supported, and hierarchical and fine-granularity low-power-consumption management is also supported.

The invention discloses a test and evaluation method for a virtualization system in multiple scenes, which comprises the following steps: deploying an executable file compiled by a test script at a virtualization client, and testing the performance of a client operating system to judge the performance loss of the virtualization system to computer resources. The method comprises the following steps: step 1, creating a project, and configuring system parameters; 2, integrating a test program into a project, and generating a mirror image file; step 3, packaging a complete virtualization system mirror image; 4, transmitting the mirror image to a development board through a network protocol; 5, executing a command to start a system, and logging in a system console through a serial port; and 6, calling and executing the function test script, the performance test script and the security test script.

The embodiment of the invention provides a serial port debugging method and a circuit board, and the method comprises the steps: receiving a register access command transmitted by an upper computer through a target serial port, enabling a programmable logic device to directly respond to the register access command of the upper computer, and executing a target access operation on a target register of the programmable logic device, under the condition that the control component fails and cannot normally communicate, the state information of the control component can be obtained by accessing the target register, so that abnormal fault positioning is realized; and the register access result is fed back to the upper computer in real time through the target serial port and the programmable logic device, so that the detailed state information of the control part can be quickly obtained, and the technical problem of serial port debugging failure caused by failure positioning when the control part is abnormal in the prior art is solved.

The invention is applicable to the technical field of switching power supplies, and provides a system and a method for wirelessly upgrading a software program of a vehicle-mounted power supply, and the system comprises a main control chip DSP (Digital Signal Processor), an MCU (Microprogrammed Control Unit) integrated with a Bluetooth module, an onboard antenna and a handheld Bluetooth terminal, the MCU communicates with the DSP through an SCI serial port and is connected with a terminal through Bluetooth; during upgrading, the handheld terminal wirelessly sends the. HEX-format upgrading file to the MCU, and the MCU reliably stores the. HEX-format upgrading file in the Flash of the MCU after the. HEX-format upgrading file is verified; the state of the DSP is monitored in real time through the MCU, when it is detected that the DSP is in a standby state, the upgrading process is automatically triggered, stored upgrading data are transmitted to the DSP through the SCI serial port, and final writing is completed through a Bootloader program of the DSP. The technical problems that the DSP cannot be directly and wirelessly upgraded, the upgrading reliability is poor in a complex electromagnetic environment, the operation and maintenance operation is inconvenient and the like are solved, and reliable, asynchronous and automatic wireless upgrading of a vehicle-mounted power supply program is realized.

The invention discloses a self-adaptive identification and dynamic drive loading method and device for a password keyboard of a self-service payment machine. According to the system, VID, PID, firmware version, SN number and instruction fingerprint four-dimensional features of a keyboard are captured in parallel through a hardware detection engine, model matching is completed by using a hash table of O (1) time complexity, and online feature collection and block chain evidence storage updating are started when matching fails; and then, dynamically loading the driving module signed by the TPM, and realizing zero-interruption hot injection of the key through a double-buffering mechanism. Compared with the prior art, plug-and-play adaptation of any USB / serial port password keyboard can be completed within one second, a secret key can be updated without restarting equipment, meanwhile, an instruction fingerprint verification and block chain trusted link is provided, the development and maintenance cost is remarkably reduced, the safety is improved, and the method is suitable for ATM, POS and various self-service payment terminals.