31 results about "Dsp processor" patented technology

The invention discloses a device and method for improving robust tracking precision of a permanent magnet synchronous motor, and belongs to the technical field of permanent magnet synchronous motor control. The device mainly comprises a power supply part, a detection circuit part, a DSP processor part, an IPM isolation protection driving circuit and an upper computer. According to the method, the parameter change and the load torque are used as the lumped disturbance, a finite time disturbance observer based on a time-varying scaling function is designed, accurate adjustment can be achieved within convergence time, and the lumped disturbance of the system can be accurately estimated; a disturbance estimation value is introduced into a sliding mode surface to compensate disturbance in real time, a novel sectional non-singular terminal sliding mode surface is provided, singularity is avoided, buffeting is effectively restrained, and therefore the robustness of the system is improved, the dynamic performance of the system is optimized, and finite time convergence of the system is achieved.

The invention belongs to the technical field of multi-detector composite detection, and more particularly relates to an infrared composite detection information processing system and method, the infrared composite detection information processing system is constructed through a DSP processor, an SOC processor, an infrared signal acquisition circuit and a laser signal acquisition circuit, the DSP processor and an FPGA circuit do not need to be additionally added, and the system is simple in structure and convenient to operate. Therefore, the accuracy of the detection result can be guaranteed, and the hardware cost and the operation power consumption of the system can be reduced; a laser signal acquisition circuit is constructed through a gain control circuit, a high-speed ADC acquisition circuit and a buffer amplification circuit, the gain control circuit and the buffer amplification circuit can be effectively utilized to filter interference noise of a target pulse signal of a laser detector, and high-speed synchronous acquisition and digital conversion of the target pulse signal can be realized in cooperation with the high-speed ADC acquisition circuit. Therefore, the SOC processor can obtain the laser detection result more accurately.

The invention relates to the technical field of magnetic control transformer control, and discloses a magnetic control system based on a multi-core DSP and a control method thereof, and the system comprises a sampling module which is connected with a magnetic control transformer and is used for collecting the electric power parameters of the magnetic control transformer; the main control module is connected with the sampling module and used for receiving the electric power parameters of the magnetic control transformer and generating a control instruction according to the electric power parameters, the main control module is a multi-core DSP processor and comprises a plurality of cores, and each core is used for processing a corresponding task; and the power module is respectively connected with the magnetic control transformer and the main control module and is used for executing corresponding actions according to the control instruction so as to control the magnetic control transformer. Reliability and real-time performance of task processing of the magnetic control system can be improved so that real-time and reliable control of the magnetic control system on the magnetic control transformer can be realized. And through controllable output of the power module, accurate control of the magnetic control transformer is realized.

The application discloses a kind of recorder based on three processor architecture, including ARM processor unit, DSP processor unit, FPGA processor unit, ARM processor unit coordinates DSP processor unit and FPGA processor unit to carry out processing to instruction and data;FPGA processing unit is electrically connected with external system, and FPGA processing unit forms the acquisition program of programming solidification according to the instruction and data distributed by ARM processor unit, and the signal data of external system is multiplexed parallel acquisition;DSP processor unit carries out real-time processing, storage, transmission to the signal data of FPGA processing unit according to the instruction and data distributed by ARM processor unit.The instruction and data processing of FPGA processor unit and DSP processor unit are coordinated by setting ARM processor unit as main control center, and work is completed by cooperation;The characteristics of three processors are realized, complementary advantages are achieved, independent and efficient, so that the optimal technical index of three processor recorder is overall played.

The invention discloses a digital signal processing universal board card, which comprises a processor circuit with a DSP (Digital Signal Processor), a reset circuit connected with the input end of the DSP, a communication circuit connected with the DSP, a discrete magnitude circuit connected with the DSP, an analog quantity circuit connected with the DSP, and a storage circuit interactively connected with the DSP, the pin end of the DSP processor can be configured with a GPIO interface, a PWM interface, an SPI / CAN interface or an Xintr interface. The device has the advantages of being small in size, light in weight, complete in function and high in expansibility, can achieve the functions of discrete magnitude input and output, analog quantity collection, communication and fault storage which are universal for power supplies, motors and power distribution type aviation airborne products, improves the signal comprehensive processing capacity of airborne equipment, and improves the reliability of the airborne equipment. The problems of accuracy, universality and the like caused by ADC precision limitation and serious board card customization in the prior art are solved.

The application discloses an STO safety torque off circuit, comprising: the first shutdown circuit and the second shutdown circuit both comprise: the output end of an STO signal input circuit is connected with the input end of a delay shaping circuit, and the output end of the delay shaping circuit is connected with an or gate circuit; the output end of a DSP processor is connected with the input end of a high pulse wave generating circuit, and the high pulse wave generating circuit is connected with the STO signal input circuit; the input end of a diagnosis circuit is connected with the output end of the STO signal input circuit; the output end of the diagnosis circuit is connected with the or gate circuit; the or gate circuit is connected with a servo drive circuit; the output end of the DSP processor is also connected with the input end of the servo drive circuit; the output end of the STO signal input circuit, the output end of the delay shaping circuit and the output end of the diagnosis circuit in the first shutdown circuit and the second shutdown circuit are also connected with the input end of the DSP processor respectively. Through the application, the shutdown reliability and the fault positioning accuracy are improved.

The utility model discloses a sound scene enhancing device based on environmental perception, and relates to the technical field of acoustics. The system comprises a microphone array, a signal conditioning circuit, an analog-to-digital converter, a DSP processor, a sound scene database memory, a master control MCU, an FPGA beam controller, an audio synthesis chip, a power amplifier, a loudspeaker array and a noise classification coprocessor, the microphone array is electrically connected with the signal conditioning circuit, and the signal conditioning circuit is electrically connected with the analog-to-digital converter. The analog-to-digital converter is electrically connected with the DSP processor, the analog-to-digital converter is electrically connected with the master control MCU, the DSP processor is electrically connected with the sound scene database memory, the DSP processor is electrically connected with the noise classification coprocessor, the noise classification coprocessor is electrically connected with the master control MCU, the master control MCU is electrically connected with the sound scene database memory, and the master control MCU is electrically connected with the FPGA beam controller. The sound scene can be automatically adjusted according to environment changes.

The invention discloses a neutral-point voltage balance control method for a three-level back-to-back frequency converter based on zero-sequence voltage injection, and belongs to the technical field of power electronics. The neutral-point voltage balance control method comprises the following steps: acquiring input three-phase voltage and current of a rectifier, output three-phase voltage and current of an inverter and voltage instantaneous values of two capacitors of a direct-current bus through voltage and current Hall components; the signals are input into the DSP after being subjected to conditioning circuit and A / D conversion; the DSP processor obtains a midpoint average current needing to be compensated by calculating a positive and negative bus capacitor voltage difference, and determines a rectification side midpoint average current reference value by combining the inversion side midpoint average current; based on the characteristic that zero-sequence voltage of a three-phase three-wire system does not affect line voltage, key zero-sequence voltage is selected within a limited range by establishing the relation between midpoint average current and the zero-sequence voltage on the rectification side, and PWM modulation waves are adjusted to achieve midpoint voltage balance. The method is simple in calculation, high in real-time performance and suitable for all modulation degree scenes.

This invention provides a device and method for improving the contour accuracy of a direct-drive XY motion platform servo system, relating to the field of CNC motion control technology. The device includes a rectifier filter circuit, an IPM inverter circuit, a detection circuit, a DSP processor, an IPM isolation protection drive circuit, a host computer, and a direct-drive XY motion platform. The method first calculates the contour error using a reference-adjusted contour error estimation method, which serves as the input to an adaptive nonlinear sliding mode contour controller. Then, the adaptive nonlinear sliding mode contour controller is used to control the contour error, and a nonlinear sliding surface is designed to improve the system's dynamic response speed and contour tracking accuracy. To further reduce the error between the reference model and the actual object, an uncertainty compensator is designed to compensate for uncertainties such as parameter changes, external disturbances, and friction, thereby improving the system's robustness.

The invention discloses a high-frequency high-power motor driving circuit in an astronavigation extreme environment. The high-frequency high-power motor driving circuit comprises a DSP (Digital Signal Processor), a pull-down resistor group, a direct connection prevention circuit, an optical coupler isolation circuit, a C43524RHF driving chip and a power MOS (Metal Oxide Semiconductor) tube, according to the circuit, six C43524RHF driving chips are adopted, so that the problem that conventional single-resistor adjustment cannot meet two time requirements at the same time is solved; six paths of control signals output by the DSP are firstly subjected to resistor pull-down processing, so that uncertain state signals output during the power-on reset period of the DSP can be ensured to be pulled to be low level, and straight-through of a post-stage power MOS (Metal Oxide Semiconductor) tube caused by phase overlapping of upper and lower complementary signals is avoided; meanwhile, an anti-straight-through circuit is formed by a logic gate circuit, so that straight-through burning of upper and lower power tubes in the three-phase bridge circuit can be prevented when control signals of the upper and lower paired tubes are abnormal, and an overcurrent protection function is realized; in addition, isolation of a control signal and a power signal is realized by means of a high-speed optocoupler, interference of a power strong electric signal on the control signal can be avoided, and stable realization of high-power driving control is guaranteed.

The invention relates to the field of musical instruments, and particularly discloses an intelligent electroacoustic dulcimer which comprises a dulcimer body. A plurality of piezoelectric sensors which are installed at the positions of knocking points on the dulcimer body and are used for sensing bamboo hammer knocking and generating electric signals; the internal chip is connected with the piezoelectric sensor and is used for receiving and processing the electric signal; the sounder is connected with the internal chip and is used for making a sound according to the processed signal; the display screen is installed on the dulcimer body and used for displaying the dulcimer type, the music score and the dynamic teaching auxiliary information; according to the invention, the combination of the PVDF film piezoelectric sensor and the DSP is adopted, so that the signal acquisition precision and the tone reduction degree are greatly improved, and the high-fidelity digital reproduction of the tone of the traditional dulcimer is realized; the unique trapezoidal dulcimer body design is combined with the modular function system, so that the instrument not only keeps the playing hand feeling of a traditional dulcimer, but also has abundant functions of a modern electronic instrument, such as multi-tone switching, automatic accompaniment and the like, and the playing expressive force is greatly expanded.

This invention relates to the field of digital signal processing technology, and discloses a DSP multi-core parallel QR decomposition method and apparatus based on tile algorithm. The method includes: dividing the matrix to be decomposed into blocks in the horizontal direction according to the number of cores of the DSP processor and setting tile blocks; performing QR decomposition on the main diagonal tile blocks; and updating all tile blocks to the right of the main diagonal tile blocks in the horizontal direction; pairwise coupling of the main diagonal tile blocks with each tile block in the vertical direction of the same column; performing QR decomposition on the coupling matrix formed by each pair of couplings; and updating all coupling matrices to the right of the pair of coupling matrices in the horizontal direction; and cyclically executing the decomposition and horizontal update of the main diagonal tile blocks, the coupling decomposition of the tile blocks in the same column, and the update of the right coupling matrix until all main diagonal tile blocks in the matrix to be decomposed have been processed, resulting in an upper triangular matrix. This invention can fully utilize the parallel processing advantages of multi-core processors to achieve inter-core parallel data processing.

The utility model relates to an outdoor sound equipment audio signal output processing circuit, comprising an ADC converter, a DSP processor, a D / A converter and a D-type power amplifier which are connected in sequence, the D / A converter is a stereo D / A converter, the ADC converter accesses an analog input signal, and the D-type power amplifier performs audio output; the analog-to-digital converter is GC5358, the DSP processor is HC6288, the D / A converter is a GC4344 digital-to-analog converter, and the D-type power amplifier is TPA3255DDVR. The multifunctional sound box formed by the circuit is strong in driving force, large in output power, bright and clear in sound, strong in penetrating power and suitable for outdoor professional performance, and solves the problems that most outdoor sound boxes are small in output power and insufficient in cruising ability.

This invention discloses an AI-driven dynamic audio fence control method, specifically including the following steps: Step 1: Signal acquisition and preprocessing using a beamforming microphone array and a DSP processor; Step 2: AI feature extraction and speech noise classification of standardized multi-channel digital audio signals; Step 3: MVDR dynamic beamforming processing based on speech noise classification labels and noise feature masks; Step 4: 3D audio rendering of the beamformed single-channel target speech signal; Step 5: Effect monitoring and parameter iteration based on the target speech signal and feedback signals from the audio output module; Step 6: Pure target speech output playback based on the 3D rendered time-domain target speech signal. The advantages of this invention are: ensuring a continuous improvement in the target speech signal-to-noise ratio (SNR), ultimately transmitting pure target speech to the speaker, forming a personal sound bubble-like virtual audio fence around the target object.

The utility model relates to a system for quickly and accurately sampling the output power of high-frequency surgical equipment, which comprises a current sampling module, a voltage sampling module, a power sampling module, a DSP (Digital Signal Processor) module and a feedback control module, wherein the current sampling module and the voltage sampling module are respectively used for acquiring current information and voltage information of target equipment; the current sampling module and the voltage sampling module respectively output current information and voltage information to the DSP processor module and the power sampling module; the output of the power sampling module is connected with the DSP processor module; and the DSP processor module controls target equipment through the feedback control module. According to the system for rapidly and accurately sampling the output power of the high-frequency surgical equipment, current and voltage are rapidly sampled, hardware calculation is carried out through the high-speed analog multiplier, a power value is rapidly obtained, feedback control is rapidly carried out through the DSP, and constant-current, constant-voltage and constant-power three-ring closed-loop control is rapidly and accurately achieved.

The embodiment of the application belongs to the field of sound boxes, and relates to a sound box system, which comprises a sound source unit, a power amplification unit and a loudspeaker unit, and a function triggering unit, a DSP processor module and a sound box adaptive control parameter acquisition module; the output end of the sound source unit, the input end of the power amplification unit, the output end of the sound box adaptive control parameter acquisition module and the function triggering unit are connected to the DSP processor module, and the loudspeaker unit and the sound box adaptive control parameter acquisition module are connected to the output end of the power amplification unit. The application also relates to an adaptive control method of the sound box system. The scheme provided by the application can realize adaptive environment adjustment of the sound box system through simple triggering operation, so that a listener is in the best listening position, sound quality is improved, and user experience is improved.

The high-performance and high-reliability inertial navigation system of the dual-redundancy TTFC node comprises a TTFC circuit, a processor CPU, an FPGA chip, a DSP processor, serial interfaces, an AD conversion circuit and a timer, the serial interfaces comprise an RS232 interface, an RS422 interface and an ARINC429 interface, due to different buses, the DSP and the TT-FC circuit cannot directly communicate, a dual-port memory is realized in the middle by means of the CPU and the FPGA chip, the DSP processor cannot directly communicate with the AD conversion circuit, and the DSP processor cannot directly communicate with the AD conversion circuit. The heterogeneous processing array of the multi-core CPU, the multi-core DSP and the large-scale FPGA supports high-performance parallel processing of mass signal data, interconnection communication between TT-FC signals and the DSP is achieved, and the real-time performance and the accuracy of the inertial navigation system are greatly improved.

The invention provides a rapid information processing system and method. The system comprises a substrate, and a master DSP processor, a slave DSP processor, a master FPGA device and a slave FPGA device which are integrated on the substrate. The master DSP is in data connection with the slave DSP, the master FPGA device and the slave FPGA device through preset high-speed interfaces, and the slave DSP is in data connection with the master FPGA device and the slave FPGA device; the master DSP processor and the slave DSP processor are each provided with a first memory used for storing starting software of the DSP processor, a second memory used for storing pre-stored data information and a third memory used for storing the pre-stored data information and temporary data. The master FPGA device and the slave FPGA device are each provided with a fourth memory used for storing a starting program of the FPGA device and a fifth memory used for storing pre-stored data information and temporary data. The system provided by the invention is high in integration level and high in stability.

The application provides a kind of heterogeneous platform radar control and signal processing device and radar system, it is related to radar system technical field, the device includes: control and processing unit, including ZYNQ, FPGA and DSP three heterogeneous processors;ZYNQ processor includes PS end and PL end, PS end runs main control software, for whole machine state control, resource scheduling, instruction forwarding and echo data processing and forwarding;PL end is configured to realize timing, wave control, signal generation and data interface driving function;FPGA processor is configured to realize signal acquisition, digital down-conversion filtering, digital beam forming, pulse compression, coherent accumulation and moving target detection function;DSP processor is configured to realize constant false alarm detection function, and segmented processing is carried out to the data of different distance sections using multi-core parallel processing architecture;Signal interface unit is used to realize the signal and data interaction between overall device and external radar subsystem. The application realizes the high integration of radar system while improving signal transmission, processing performance.

This invention proposes an automatic compensation system and method for time-delay control of unmanned optoelectronic payloads. The automatic compensation system includes a timing module, an FPGA module, a video compression module, a DSP processor, an SRIO switching module, an Ethernet switching module, and a ground control platform. During the acquisition, transmission, and processing of video images throughout the system, each frame contains corresponding UTC time information. When an operator on the ground issues a target tracking command based on the viewed video information, the on-board unit combines the time information of the selected target area and the image to find the corresponding time frame, automatically compensating for the time delay in video transmission and processing, thus enabling target tracking. By combining timing information with automatic time-delay control compensation, the shortcomings of existing technologies in command interaction under video transmission delays can be overcome, improving the real-time performance, reliability, and efficiency of command control, and meeting the high requirements of unmanned optoelectronic payloads for control response.

The invention provides an amplitude and phase measurement device and method suitable for a converter station AC system, and the method comprises the steps: measuring the amplitude and phase of the voltage and current of a secondary loop of the AC system through a multi-channel collection module of a measurement extension, and transmitting the amplitude and phase to an information collection machine through a communication reliability improvement strategy after the amplitude and phase are processed by a DSP processor module; finally, a communication module of the information summarizing machine is used for sending all measurement information to the monitoring mobile phone; according to the communication reliability improvement strategy, the stability and accuracy of data transmission in a complex environment are effectively enhanced by utilizing communication path self-adaption and multi-level redundancy design. The device is simple in structure and easy to realize, the communication reliability and efficiency of the amplitude-phase measurement of the secondary circuit are remarkably improved, the manual intervention requirement is reduced, and the accuracy and rapidity of the amplitude-phase measurement are guaranteed.

The invention provides a double-closed-loop vector control method of a permanent magnet synchronous motor and a DSP processor, and belongs to the technical field of motor control, and the method comprises the steps: determining a current instruction based on a difference value between a motor reference rotating speed and a mechanical rotating speed, observed by an EEMF observer, of the motor; inputting the first alpha-beta-axis current, the first alpha-beta-axis voltage and the electric angular speed of the motor obtained by observation of the observer in the last beat into an EEMF observer to obtain an extended counter electromotive force, and extracting a motor rotor position angle and a motor rotating speed; inputting the motor rotor position angle and the motor rotating speed into an SCRS system, and extracting a harmonic component; inputting the harmonic component and the motor rotor position angle into an SCRC system to obtain a compensation current; obtaining the reference current of the current loop based on the difference between the compensation current and the current instruction; and performing control based on a difference value between the reference current and the feedback current. The problems of low motor operation efficiency and serious noise pollution caused by vibration of the synchronous motor can be solved.

The utility model provides a radar rain measurement monitoring system. The radar rain measurement monitoring system comprises radar equipment, a radar data acquisition device, an antenna control device and a radar station, the radar equipment monitors rainfall in a watershed through a rain detection radar, and an upper computer and a server are arranged in the radar station; the radar data acquisition device comprises a radar data acquisition card, the radar data acquisition processing card adopts a DSP + FPGA framework and comprises a DSP processor, an FPGA processor, a first dual-port RAM, a second dual-port RAM, a PCI data interface card and a serial port communication module, and the antenna control device comprises a controller, a power supply module, a positioner, an angle sensor and a wireless communication unit. And the antenna control device is connected with an upper computer in the radar station through the wireless communication unit. According to the utility model, the DSP is adopted to realize high-speed data stream processing, the function of the data acquisition card is enhanced, the FPGA simplifies the circuit structure, the flexibility and reliability of the system design are enhanced, and the cost is reduced.

The utility model provides a microphone with a built-in DSP processor, and relates to the field of microphones. The microphone with the built-in DSP comprises a microphone body, a connecting port is formed in the bottom of the microphone body, a connector is inserted into the connecting port, a wire is connected to the bottom of the connector, the bottom of the microphone body is sleeved with a combined sleeve, a clamping groove is formed in the left side of the combined sleeve, and a clamping groove is formed in the right side of the combined sleeve. The inner wall of the right side of the combined sleeve is fixedly connected with a fixing block, and the upper surface of the fixing block is fixedly connected with a spring. According to the microphone with the built-in DSP, through the mutual combination of the combination sleeve, the clamping groove, the spring and the fixing block, the connector and the connecting port can be compressed, so that the lead and the microphone can be detached, the microphone is convenient to carry and store, and the problem that the current microphone with the built-in DSP is inconvenient to carry and store in use is solved. And due to the integrated design of the lead and the microphone, the problem that the microphone is not easy to store and carry is solved.

The invention relates to an audio transmission control method, apparatus and device, and a computer storage medium. The method comprises the steps of constructing a multi-level clock source architecture of a master clock, a region-level boundary clock and an end transparent clock in a distributed network environment; a dynamic path delay compensation mechanism and an edge node collaborative calibration strategy are combined to realize time synchronization; a multi-channel parallel processing unit, a low-delay FIR / IIR filter bank and a dynamic bit distribution engine are obtained based on a DSP processor; audio transmission when the network bandwidth is limited is realized by combining a perceptual coding technology, a neural network auxiliary quantization algorithm and a bandwidth self-adaptive dynamic switching strategy; constructing a hybrid prediction model based on a machine learning algorithm; acquiring and collecting multi-dimensional operation data in real time; and dynamically predicting a transmission health state based on the multi-dimensional operation data and the hybrid prediction model. The method and the device have the effects of improving the accuracy of time synchronization and dynamically predicting the transmission state to deal with in advance.

The invention discloses a circuit for controlling error instruction output through software and a working method, and belongs to the technical field of space embedded computer application, a DSP (digital signal processor) is connected with an FPGA (field programmable gate array) through a communication interface, an instruction driving circuit is connected with an instruction output end of the FPGA, and at least three instruction code registers are arranged in the FPGA; the DSP processor is used for sequentially writing instruction codes into the instruction code registers according to a preset sequence, and immediately reading back values in the instruction code registers after each time of writing; and the FPGA is used for voting the instruction codes in the instruction code registers after the at least three instruction code registers finish writing, analyzing the instruction codes to generate instruction control signals when the instruction codes of at least two instruction code registers are the same, and outputting the instruction control signals to the instruction driving circuit. According to the invention, under the condition that the complexity of a hardware circuit is not increased, the risk of space single event upset is reduced through a cooperative control mode of the processor and the FPGA, and the output of an abnormal instruction is effectively prevented.

The invention belongs to the technical field of automatic control of euphausia superba husking, and discloses a device and a method for improving the performance of an euphausia superba husking machine. The device comprises a power supply part, a detection circuit, a DSP processor part, an IPM isolation protection drive circuit, an upper computer and a plurality of permanent magnet synchronous motors. A preset performance cross coupling controller is used to realize synchronization control among multiple shafts, and a synchronization error is constrained; the lumped disturbance of the system is estimated through a disturbance observer and introduced into a PID controller, so that the constraint of the disturbance upper bound on the conservative property of the control design is avoided; according to the disturbance observer, a sign function is hidden in an integral term, so that high-frequency buffeting can be weakened essentially, and the stability and continuity of a control signal are ensured. Therefore, the disturbance tracking precision is improved, a stable control signal can be generated, the control performance of the system is obviously improved, the tracking error is reduced, high-frequency oscillation is avoided, and the control precision of the multi-axis servo system of the euphausia superba husking machine is further improved.

The application discloses a photovoltaic inverter and a control circuit and a control method thereof, and belongs to the technical field of photovoltaic inverters, and comprises the following steps: a first photovoltaic component, a first direct-current contactor and a second photovoltaic component are sequentially connected in series and then connected to a BUCK-BOOST circuit; the output end of the first photovoltaic component is further connected to the BUCK-BOOST circuit through a second direct-current contactor; the output end of the second photovoltaic component is connected to the input end of a voltage sampling circuit and the input end of the BUCK-BOOST circuit; the output end of a direct-current contactor control circuit is connected to the first direct-current contactor and the second direct-current contactor; a DSP processor is connected to the voltage sampling circuit, the direct-current contactor control circuit and the BUCK-BOOST circuit; the output end of the BUCK-BOOST circuit is connected to the input end of a load and an energy storage device and the input end of an inverter device; and the output end of the inverter device is connected to a grid-connected device. The application provides a photovoltaic inverter control circuit and a method thereof, which are compact in structure and flexible in control, and solve the problem of unstable output voltage caused by illumination change.

The application discloses a kind of generalization high reliability online upgrade method of DSP processor, comprising: allocating storage space;B area effective flag and B area first running flag are initialized;Carry out application program design;Boot program and application program A are stored to the allocated storage space;B area effective flag and B area first running flag are read by boot program, confirm to load application program A area;Online upgrade data and upgrade instruction are received, and upgrade data is loaded to application program B area storage space, and program upgrade is carried out;Whether program upgrade is successful is judged, if not, then enter upgrade error processing program;Otherwise, enter the processing program after upgrading;Power off and power on again, boot program according to B area effective flag and B area first running flag, confirm to run application program A area or application program B area.Can be realized in the case where no hardware equipment is added, and multiple repeated reliable online upgrade.

This invention relates to a time-refreshing method for hardening missile-borne computers against single-event upsets (SWEs), belonging to the field of missile-borne computers. In this invention, a DSP processor (1) and a non-volatile memory (2) are connected via an EMIF bus (3). Software hardened using the SEU method runs in the DSP processor. The non-volatile memory is responsible for backing up the protected data, and the EMIF bus is responsible for supporting data interaction between the DSP processor and the non-volatile memory. This invention does not increase the internal storage space requirements of the DSP; SEU hardening is performed at a certain time period, allowing for time-sharing of DSP computing resources, thus minimizing the impact on normal program execution; the length of data blocks and the cycle of SEU hardening can be flexibly adjusted, achieving a balance between computing resource consumption and SEU hardening effectiveness.