68 results about "Dsp processor" patented technology

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 relates to the field of aero-engine testing, in particular to an aero-engine rotating speed signal generator and a control method, and the system comprises the steps that a main control module receives a test demand input by a user, selects and determines the model, matching frequency, voltage and phase parameters of a tachometer sensor needing to be simulated based on the test demand, and transmits the parameters to a DSP processor; the DSP processor receives parameters issued by the main control module and generates an SPWM signal through a timer; the timer is configured to be in a circulation mode, and the period of the PWM signal is changed by changing the initial value of the timer; the inversion module converts the isolated SPWM waveform into a three-phase alternating current signal and outputs the three-phase alternating current signal; and the detection module measures data of the three-phase alternating current signal output by the inversion module in real time and feeds back the data to the main control module to form closed-loop control. Test errors caused by performance errors of the sensor are avoided, and the actual performance of the tachometer indicator can be evaluated more accurately.

The invention belongs to the technical field of digital signal processors, and particularly relates to a non-intrusive real-time monitoring debugger for a DSP (digital signal processor). The real-time monitoring debugger comprises a bus monitoring module and a tracking buffer module, and the bus monitoring module and the tracking buffer module jointly complete debugging and obtain real-time operation information. The bus monitoring module is used for monitoring the memory access operation of the DSP, and meanwhile, the tracking buffer module is used for recording execution tracks of a program before and after an event, so that comprehensive and accurate debugging information is provided for a system, and problems occurring in the running process of the DSP can be quickly positioned and solved, and the debugging efficiency is improved; in addition, by arranging a special register, high configurability is achieved, so that monitoring and recording strategies can be flexibly adjusted according to different debugging requirements, and the debugging process is more targeted and efficient.

The invention provides a high-precision high-robustness PMLSM position tracking control method and system, and relates to the technical field of numerical control. Comprising a DSP processor, a detection circuit, a Hall sensor, a linear grating ruler, a Fault signal acquisition circuit, a reset circuit, an IPM protection isolation drive circuit, an IPM inverter circuit, a JTAG circuit, a crystal oscillator circuit, a level conversion circuit, an upper computer and a permanent magnet linear synchronous motor. Firstly, a LuGre model based on an improved Stribeck effect function is designed, then a PMLSM position tracking controller is designed, robust simple adaptive control is utilized to solve the problem of influence of uncertainty on system tracking precision, a command generation tracker is utilized to calculate parameters of the robust simple adaptive controller through model difference, and the position tracking precision of the system is improved. The robust simple adaptive control method based on the command generation tracker is adopted, so that the uncertainty factors of the system can be more effectively inhibited, the output error is reduced, and the position tracking precision is improved.

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 discloses a switch equipment motor operating mechanism device, a control method and a parameter setting method. The switch equipment motor operating mechanism comprises a motor, a transmission mechanism, a controller, an inversion unit, a driving unit, a detection unit, a power supply circuit and an upper computer. The controller is a DSP processor, processes data collected by the detection unit, executes a three-ring PI control algorithm, and outputs a PWM signal to the driving unit. The driving unit controls the inversion unit, and the inversion unit converts direct current of the power supply circuit into three-phase alternating current to drive a motor; the upper computer is in communication connection with the controller, monitors the state of the motor in real time, adjusts control parameters and displays real-time data. Through the three-ring control algorithm and the particle swarm optimization, the control precision, the intelligent level and the debugging efficiency of the high-voltage circuit breaker operating mechanism are remarkably improved, the workload of debugging personnel is effectively reduced, and the problems of insufficient dynamic adjustment, parameter solidification, manual dependence and the like in the prior art are solved.

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.

This invention discloses a device, control method, and parameter tuning method for a switchgear motor operating mechanism. The switchgear motor operating mechanism includes a motor, a transmission mechanism, a controller, an inverter unit, a drive unit, a detection unit, a power supply circuit, and a host computer. The controller is a DSP processor that processes data collected by the detection unit, executes a three-loop PI control algorithm, and outputs a PWM signal to the drive unit. The drive unit controls the inverter unit, which converts the DC power from the power supply circuit into three-phase AC power to drive the motor. The host computer is communicatively connected to the controller, monitoring the motor status in real time, adjusting control parameters, and displaying real-time data. This invention, through a three-loop control algorithm and particle swarm optimization, significantly improves the control accuracy, intelligence level, and debugging efficiency of the high-voltage circuit breaker operating mechanism, effectively reducing the workload of debugging personnel and solving problems such as insufficient dynamic adjustment, parameter rigidity, and manual dependence in existing technologies.

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 application discloses a high-dynamic SAR image corner anti-discrimination method, which utilizes a multi-core DSP processor to perform parallel operation, converts high-dynamic M-bit image data to be processed into M / 2-bit image data through power transformation, performs a maximum value searching operation on the M / 2-bit image data after the power transformation, performs target pixel position merging on the pixel maximum value, performs ROI slice segmentation on the merged pixel maximum value, performs ROI processing on the segmented ROI slice, generates an ROI binary graph, calculates a connected region area value in the ROI binary graph, and distinguishes targets and corner anti-discriminations. The application can quickly screen out high-value targets and corner anti-discriminations in a high-dynamic scene, has strong robustness, wide applicability, high automation degree and rapid processing.

The utility model provides an ultrahigh pressure hydraulic reversing valve core acceleration motion characteristic detection device comprising a valve body which is internally provided with a valve core in clearance fit with the valve body; the magnetic induction iron core is arranged in the gap of the Hall sensor and is used for generating a displacement voltage signal; the non-flexible connector is used for connecting the magnetic induction iron core and the valve element; the A / D converter is used for receiving the displacement voltage signal of the magnetic induction iron core and converting the displacement voltage signal into a digital signal; the DSP processor is used for receiving the digital signal transmitted by the A / D converter and transmitting the digital signal to an upper computer; the HMI is used for receiving the operation information transmitted by the upper computer, displaying and editing the operation information and then transmitting the operation information to the PWM generator; the PWM generator is used for receiving information transmitted by the DSP and driving the electric proportional valve to move, and the technical problems that in an existing detection mode, open-loop control exists, the displacement sensing precision of a valve element is not high, the overshoot situation frequently occurs, meanwhile, the movement speed and acceleration data of the valve element cannot be achieved, and the time domain cannot be accurately calculated are solved.

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.

The invention discloses a programmable Josephson voltage step wave simulation device and method, and belongs to the field of power electronic simulation, the programmable Josephson voltage step wave simulation device comprises a synchronous dynamic random access memory module, a DSP processor module and a DAC conversion module; the DSP processor module is used for calculating a waveform value corresponding to the Josephson step wave to be generated and transmitting the waveform value to the synchronous dynamic random access memory module; the synchronous dynamic random access memory module is used for storing the received waveform value; the DSP processor module is also used for reading a waveform value corresponding to the Josephson step wave to be generated from the synchronous dynamic random access memory module and transmitting the waveform value to the DAC conversion module; and the DAC conversion module is used for converting the waveform value into a corresponding analog waveform and outputting the analog waveform, so that the problems that the programmable quantum alternating-current voltage trapezoidal wave cannot be simulated and the waveform can only be generated by using a physical system in the prior art can be solved.

The invention discloses a heterogeneous multi-core processor log acquisition method, device and equipment. Comprising the following steps: screening a DSP main core processor from a plurality of DSPs, and setting a ping-pong cache on the DSP main core processor; the logs generated by each DSP processor are stored in a ping-pong cache, and the logs in the ping-pong cache are sent to an ARM processor through a main core; and uniformly outputting the logs received by the ARM processor and the logs generated by the ARM processor according to a pre-configured log output mode. The DSP main core processor collects logs generated by the DSPs based on a ping-pong cache mode, resource competition and interference caused by multiple cores are avoided, the DSP main core processor uniformly outputs the obtained logs of all the processors in a pre-configured log output mode, and therefore the logs from heterogeneous processing are uniformly processed, and the processing efficiency is improved. Unified and standardized processing of the logs of the heterogeneous multi-core processor is realized under the condition of saving resource overhead.

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 relates to a method for realizing preceding-stage PFC (power factor correction) control of a wireless charging system with superposed multiplication control loop and inner and outer loops, which adjusts the performance of the whole system through a type-2 compensator and Kalman filtering, can ensure that a voltage loop has enough bandwidth so as to meet dynamic response performance, and can ensure good power correction performance at the same time. According to the invention, the two-type compensator is used for digital operation in the DSP processor, so that the stability, the response speed, the steady-state error and other performances of the feedback control system are improved; meanwhile, the Kalman filtering algorithm is used for estimating the state of the dynamic system, the performance of the whole system is adjusted in combination with a voltage outer loop and a current inner loop in an original system, and the dynamic response of the output voltage can be improved under the condition that the bandwidth of the voltage loop is sufficient. The method is suitable for the technical field of wireless charging system power correction.

The utility model discloses a wave curve uniform sound system manager, comprising a sound box main body, and a DSP processor, a first power amplifier, a power supply manager, a signal source pre-stage processing module and a second power amplifier which are independently designed, the signal source pre-stage processing module is used for performing gain adjustment and equalization preprocessing on the digital analog signal to obtain a preprocessed signal; the DSP processor is used for carrying out beam control, frequency division and filtering processing on the preprocessed signal; the power amplifier is used for amplifying signals. According to the utility model, the signal source pre-stage processing module and the DSP processor are arranged, and through linkage of the signal source pre-stage processing module and the DSP processor, beam forming and directional control are realized, and efficient management of a loudspeaker system is realized.

The invention discloses a photovoltaic inverter and a control circuit and a control method thereof, and belongs to the technical field of photovoltaic inverters.The photovoltaic inverter is characterized in that a first photovoltaic module, a first direct current contactor and a second photovoltaic module are sequentially connected in series and then connected to a BUCK-BOOST circuit, and the output end of the first photovoltaic module is further connected to the BUCK-BOOST circuit through a second direct current contactor; the output end of the second photovoltaic module is connected with the input end of the voltage sampling circuit and the input end of the BUCK-BOOST circuit; the output end of the direct current contactor control circuit is connected with the first direct current contactor and the second direct current contactor. The DSP processor is respectively connected with 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 with a load, the input end of the energy storage device and the input end of the inverter device. And the output end of the inversion device is connected with the grid-connected device. According to the photovoltaic inverter control circuit and method, the structure is compact, control is flexible, and the problem that the output voltage is unstable due to illumination changes is solved.

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.

The present invention discloses a method, apparatus and storage medium for audio data interaction processing in a heterogeneous system. The method includes setting an inter-core communication software interface for the Linux system and the FreeRTOS system based on the ALSA audio framework; integrating an audio peripheral in the DSP processor of the FreeRTOS system, and setting an inter-core communication hardware interface between the DSP processor and the ARM processor of the Linux system; setting a data structure, where the data structure includes a communication code and a shared memory address of the data structure object; based on the inter-core communication software interface and the inter-core communication hardware interface, the ARM processor and the DSP processor perform audio data interaction processing. The embodiments of the present invention can improve the data transmission efficiency.

The utility model relates to a low-power-consumption tracking controller of a photovoltaic support. The low-power-consumption tracking controller comprises a DSP processor, and a GPS module, a clock module, a TPS2115A chip, a communication module, a display device, a rotation speed reducer control module and a sensor which are connected with the DSP processor. The low power consumption mode of the DSP processor comprises the following steps: the DSP processor is connected with a TXD interface of the GPS module; the DSP processor is connected with the UTXD interface of the communication module; the DSP processor is connected with an E interface of the display device; the rotary speed reducer control module comprises a relay arranged between a power supply and a switch tube; the TPS2115A chip is respectively connected with the solar photovoltaic panel and the storage battery module through an IN1 interface and an IN2 interface, wherein the solar photovoltaic panel and the storage battery module are subjected to DC-DC voltage stabilization; according to the utility model, a'night mode 'is added, and the energy consumption of the controller at night can be greatly reduced on the premise that the core function of the controller is not influenced basically, so that the capacity demand of the storage battery can be reduced, and the volume, weight and cost of the controller are reduced.

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.

The utility model discloses an automatic transceiving and decoding circuit for wireless telegraph signals, which comprises an ARM (advanced RISC machines) processor, a DSP (digital signal processor), an interface circuit and an audio output module. The DSP, the interface circuit and the audio output module are electrically connected with the ARM processor. The ARM processor is used for transmitting, receiving and decoding a hand key report signal and transmitting and receiving a datagram and an electronic key signal; the DSP processor is used for decoding the datagram and the electronic key signal; the interface circuit is used for inputting and outputting hand key, electronic key and datagram signals, and the audio output module outputs audio signals of the hand key or the electronic key. According to the utility model, the circuit simultaneously has the functions of automatically receiving and transmitting the hand key, the electronic key and the datagram, the DSP and the ARM processor are used, the integration level of circuit hardware is high, the whole circuit is small in size, low in cost and wide in application scene, and the circuit can replace a single hand key and a single electronic key and is applied to various radio communication scenes.

The present invention relates to a software hardening method for a missile-borne computer against single-event upsets with dynamic refresh, belonging to the field of missile-borne computers. The missile-borne computer of the present invention includes a DSP processor (1) and a non-volatile memory (2), and the DSP processor (1) is connected to the non-volatile memory (2) through an EMIF bus (3). The DSP processor (1) first partitions the protected data and calculates its CRC16-CCITT checksum, and then backs up these protected data and the CRC checksum in the non-volatile memory (2). During the operation of the missile-borne computer, the DSP processor (1) periodically performs CRC checks on the protected data located in its internal storage unit to identify whether an SEU occurs. When an SEU occurs, the backup data stored in the non-volatile memory (2) is updated to the internal storage unit of the DSP processor (1) to achieve error correction, thereby suppressing the influence of SEUs.