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130 results about "STM32" patented technology

STM32 is a family of 32-bit microcontroller integrated circuits by STMicroelectronics. The STM32 chips are grouped into related series that are based around the same 32-bit ARM processor core, such as the Cortex-M33F, Cortex-M7F, Cortex-M4F, Cortex-M3, Cortex-M0+, or Cortex-M0. Internally, each microcontroller consists of the processor core, static RAM, flash memory, debugging interface, and various peripherals.

STM32-based security unmanned aerial vehicle system

The invention discloses a security unmanned aerial vehicle system based on STM32, and relates to the technical field of security unmanned aerial vehicles. The strategic value of the unmanned aerial vehicle in the public safety field is verified, the technical iteration and application deepening of the unmanned aerial vehicle can continuously promote the modernization of social governance, and the novel 7 * 24-hour all-weather security unmanned aerial vehicle system is provided for solving the problems that an existing unmanned aerial vehicle is poor in endurance, single in application scene, low in working efficiency and the like. The problem of endurance is solved by adopting a new technology and a new thought, and the system has the advantages of low cost, low power consumption, high efficiency, energy conservation, environmental protection and the like; the YOLOv5 algorithm and the ArcFace algorithm can form complementation in function, complete more complex tasks together, and realize more efficient and accurate face recognition and pedestrian analysis; the Hungary tracking algorithm and the Kalman filter are combined and used, so that multi-target tracking can be effectively realized, and the tracking accuracy and reliability are improved.
Owner:郝梓萌

Avionics control system for small sounding rocket

The utility model discloses an avionics control system for a small sounding rocket, and the system comprises a power voltage stabilizing circuit and an STM32 microprocessor. The STM32 microprocessor is respectively connected with the MOS tube switching circuit, the emission level reading module, the buzzer driving circuit, the steering engine driving circuit, the height sensor BMP280 driving circuit, the six-axis acceleration sensor MPU6050 driving circuit and the storage module W25Q64 driving circuit; the system can quickly, simply and conveniently complete flight data acquisition and attitude control of the rocket, is simple in structure and convenient to operate, has high integration level, high flexibility and stable attitude control and data acquisition and storage capabilities, is suitable for diversified experiment requirements, greatly simplifies the rocket control process, reduces the dependence on the experiment environment, and improves the experiment efficiency. The method is suitable for various engineering education and scientific research scenes, and the application value of the small sounding rocket in teaching and scientific research is improved.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Ship trajectory visualization method and system based on combination of STM32 and Simulink

The invention relates to the technical field of ship control and navigation simulation, in particular to a ship trajectory visualization method and system based on combination of STM32 and Simulink, and the method comprises the following steps: an inertial measurement module and an ultra wide band positioning module collect attitude position information of a ship; the attitude position information is transmitted to an STM32 chip, the STM32 chip fuses the three-axis angular velocity, the three-axis linear acceleration and the three-axis geomagnetic data through a quaternion fusion algorithm to obtain a quaternion calculation result, and the quaternion calculation result and the position information in the three-dimensional space are fused to obtain fused data; the STM32 chip is used for fusing data, the fused data are packaged into data frames, the STM32 chip is used for transmitting the data frames to a ship model in a Simulink platform through a MAVLink protocol, the ship model is used for extracting the attitude angle and space coordinate information of the ship based on the data frames, and the visual motion trail of the ship is generated based on the attitude angle and space coordinate information of the ship. According to the invention, visual display and control algorithm verification are realized, and a semi-physical simulation closed-loop process is completed.
Owner:DALIAN MARITIME UNIVERSITY

Method for remotely upgrading PG program

The invention provides a method for remotely upgrading a PG program, belongs to the technical field of PG program upgrading, and is mainly applied to an LCM display screen test fixture and can be expanded to PG products in the fields of vehicle-mounted display, industrial control display and the like. A solution based on an IAP function of an STM32 industrial chip is provided, a bootloader program is configured in a PG and cooperates with an upper computer program, and after the upper computer carries out unpacking, format matching and CRC32 verification processing on pre-upgraded PG program data, wireless remote transmission is achieved through an internet access or a WIFI router; after a bootloader program of the PG receives the data, register initialization and data unpacking are completed, and target data are written into a chip main program area according to an STM32FLASH write-in protocol; meanwhile, the upper computer and the bootloader complete upgrading result verification through a preset calibration scheme, the upgrading state, consumed time and abnormal information are displayed through a visual interface, and parallel batch upgrading of 1-20 PGs is supported. Technical support is provided for large-scale mass production of PG products, and enterprises are assisted in improving product cost performance and market competitiveness.
Owner:BENGBU JIANGFAN TECHNOLOGY CO LTD

Harris hawk algorithm optimized fuzzy PID parameter high-value consumable cabinet temperature control method

The application discloses a high-value consumable cabinet temperature control method for optimizing fuzzy PID parameters by using a Harris hawk algorithm, and belongs to the technical field of high-value consumable management. The method comprises the following steps: a temperature acquisition module collects data, and sends the data to an upper computer and an STM32 controller through a serial communication module, and a mathematical model of the internal temperature of the high-value consumable cabinet is calculated; a fuzzy PID temperature controller is designed based on the mathematical model, the error and the error change rate between the actual output value and the expected value of the temperature in the cabinet are controlled by using the fuzzy PID temperature controller to obtain the parameter value of the fuzzy PID temperature controller, and the quantization factor and the output proportional factor of the fuzzy PID temperature controller are optimized by using an improved Harris hawk algorithm; and the cabinet internal temperature is controlled in real time by the fuzzy PID temperature controller after the factors are updated. The improved Harris hawk optimization algorithm is used to optimize the fuzzy PID parameters, and the situation that the simulation result is not ideal due to excessive dependence on the setting of parameters according to expert experience is reduced.
Owner:HEFEI UNIV OF TECH

Fourier series detection device for weak periodic signal in strong noise background based on FPGA

The application discloses a Fourier series detection device for weak periodic signals under strong noise based on FPGA. The device comprises a program-controlled amplification module, an AD acquisition module, an FPGA Fourier detection module, an STM32 control module and an OLED display module. The program-controlled amplification module amplifies the amplitude of the periodic signals carrying strong noise. The AD acquisition module digitizes the amplified signals. The FPGA Fourier series detection module filters the strong noise and detects the Fourier series of the acquired digital signals. The STM32 controls the program-controlled amplification multiple, the AD acquisition rate, the OLED display and the communication with the FPGA. The OLED displays the Fourier series of the signals. The application has the advantages of accurate Fourier series detection, real-time Fourier series display and the like. The application can detect the spectrum of weak periodic signals under extremely low signal-to-noise ratio and can be applied to the fields of photoelectric signal detection such as Fourier transform infrared spectrum detection and Fourier transform terahertz spectrum detection.
Owner:NANJING UNIV OF SCI & TECH

Implementation method of multi-agent speed-measurement-free inclusion control device based on STM32

The invention relates to the technical field of control or regulation systems, in particular to an implementation method of a multi-agent speedless measurement control device based on STM32. The method comprises the following steps: establishing a communication topological graph of a multi-agent system; determining a dynamical model of the agent node and an inclusion control protocol without speed measurement; a distributed hardware system platform based on an STM32 microcontroller is constructed; based on the platform, a collaborative development environment with STM32CubeMX and Keil uVision5 as the core is constructed. According to the invention, the STM32 microcontroller is taken as a core, the control instruction of the intelligent agent is directly calculated and is driven to execute, and only the positions of the intelligent agent and the neighbor node are taken as control input, so that a control target can be efficiently and stably achieved; the challenges of computing power, storage and bandwidth limitation when distributed inclusion control is deployed on a hardware platform based on an STM32 microcontroller are solved.
Owner:SHANDONG UNIV

Sliding rail frame type fire extinguishing robot and climbing control method thereof

The invention relates to the technical field of fire-fighting robots, in particular to a sliding rail frame type fire extinguishing robot and a climbing control method thereof.The sliding rail frame type fire extinguishing robot comprises a robot body, a sensing direction-changing mechanism, a sliding rail moving mechanism, a sleeve fixing structure and a fire extinguishing structure, and the sensing direction-changing mechanism, the sliding rail moving mechanism, the sleeve fixing structure and the fire extinguishing structure are integrated on the robot body; the STM32 core board plans a path and controls the Mecanum wheels to achieve omni-directional movement, in the climbing process, a bionic adsorption climbing mode of'fixing-stepping-alternate stepping 'is adopted, the robot ascends steadily along stairs, after the robot reaches a fire source, the rotating platform adjusts the direction of the fire extinguisher, and precise fire extinguishing is executed. The device is suitable for autonomous fire extinguishing tasks in high-rise building stair environments.
Owner:SHANGHAI YINXIANG HYDRAULIC TECH

An electric vehicle charging pile parking space warning system and method based on an STM32 chip

The application discloses an electric vehicle charging pile parking space warning system and method based on an STM32 chip, and belongs to the field of automobile parking safety. In view of the situation that electric vehicle charging pile parking spaces are occupied and thus electric vehicles in need of charging cannot be charged, the application designs an electric vehicle charging pile parking space warning system based on an STM32 chip. When a vehicle drives into a parking space, whether the license plate of the parked vehicle is green is recognized by an OPENMV module, and whether the charging pile is in operation is judged by a current sampling circuit; if any of the two conditions is not met, a buzzer continuously issues an alarm, a corresponding warning slogan appears on a display screen, and a GPS module and an ESP8266 communication module are started at the same time to prompt the owner of the vehicle of corresponding information of the nearest parking lot. The application analyzes the situation of the vehicle entering the charging pile parking space from multiple angles through the license plate recognition function and the charging detection function, and the system issues a warning and guides the vehicle to a parking place at the same time, so that the charging pile parking space is fully ensured not to be occupied.
Owner:NANJING TECH UNIV

Target ball automatic fixing device of laser tracker for measuring inner and outer diameters of shaft parts

The invention discloses an automatic target ball fixing device of a laser tracker for measuring the inner diameter and the outer diameter of a shaft part, and belongs to the technical field of crossing of precision measurement and automatic control. Comprising a visual upper computer, a target ball fixing device unit and a controller driving unit, and communication control is achieved through an RS-485 bus. The target ball fixing unit adopts a two-phase hybrid closed-loop stepping motor to drive a left-handed and right-handed precision ball screw, and a measuring claw is driven to realize synchronous opening and closing movement; a controller driving unit adopts an STM32 single-chip microcomputer as a core, adopts a'position-speed-current 'three-closed-loop cascade control strategy, and combines a fuzzy PID algorithm and an S-shaped acceleration and deceleration algorithm to realize clamping force control with + / -5N precision. The device has the characteristics of full-automatic operation, stroke self-calibration and wide adaptability, solves the problems of large manual operation error, poor force / position control collaboration and the like, improves the measurement precision and efficiency of the large shaft parts, and is particularly suitable for precise detection of the large shaft parts.
Owner:ZHEJIANG SCI-TECH UNIV

Novel laser positioner

The utility model discloses a novel laser positioner. According to the utility model, a vertical structure is adopted, the device comprises a PCB circuit board, an STM32 expansion board and a photoelectric detector module, the photoelectric detector module and the STM32 expansion board acquire a required stable power supply from a power supply circuit on the PCB circuit board, the photoelectric detector module converts a detected optical signal into an electric signal, and then transmits the electric signal to the STM32 expansion board for processing, and the STM32 expansion board is connected with the photoelectric detector module. And the STM32 expansion board processes the transmitted signal and then transmits a processing result to the PCB. The photoelectric detector module of the main part of the laser positioner adopts a 16 * 16 arrayed antimony selenide photoelectric detector, so that the failure rate can be reduced, the reliability and stability can be improved, the sensitivity can be improved, and the cost can be reduced. The method has very high use value.
Owner:TIANJIN UNIV OF COMMERCE

STM32-based intelligent logistics sorting system and control method thereof

The invention relates to the technical field of automatic sorting, in particular to an STM32-based intelligent logistics sorting system which comprises a main control module, a tracking module, an obstacle avoidance module, a two-dimensional code recognition module, a mechanical arm module and a power module which are mounted on a mobile carrier. Low-cost sensors such as STM32F429 + TCRT5000 / HC-SR04 are adopted, the total cost of the system is smaller than or equal to 2000 yuan, the tracking and obstacle avoidance error is smaller than or equal to 2 mm, and the system adapts to complex scenes, mechanical arm six-degree-of-freedom configuration and PWM precise control, supports multi-angle grabbing and adapts to materials of different sizes; the two-dimensional code recognition module supports dynamic information updating and flexibly adjusts a sorting strategy, the TB6612 driving efficiency is high, the STM32 low-power-consumption mode is adopted, and the all-weather operation requirement is met.
Owner:KUNMING UNIV OF SCI & TECH

Portable radon detector

The invention relates to the field of environment monitoring and analyzing instruments, and particularly discloses a portable radon detector which comprises a silicon photomultiplier sensor unit, a low-noise preamplifier unit, a comparator circuit and an STM32 main control module. By adopting the EQR-15 series silicon photomultiplier, the 300 [mu] m epoxy resin protective layer on the surface of the EQR-15 series silicon photomultiplier can directly emit light under the bombardment of alpha particles, the advantages of the integration of a photodiode and the high signal amplitude of a scintillator are integrated, and the detection sensitivity and the signal-to-noise ratio are remarkably improved while an independent scintillator is omitted. Aiming at weak current signals, a low-noise pre-amplification circuit with a TL084CDR operational amplifier as a core is designed, and a pulse shaping and emitter follower is arranged, so that the problems of signal amplification and interference resistance are effectively solved. The main control module realizes accurate capture and counting of alpha particle pulses through ADC sampling, hardware triggering and DMA storage in combination with a threshold self-adaption and baseline tracking algorithm.
Owner:CHIZHOU UNIV

Direct current motor semi-physical simulation method and device based on model driving

The invention relates to the technical field of analog simulation, and discloses a direct current motor semi-physical simulation method and device based on model driving, the method is based on the simulink model driving engineering (MBSE) concept, a direct current motor mathematical model with physical significance is constructed in a simulation system, and the direct current motor mathematical model comprises an armature circuit model, a mechanical load model, a back electromotive force model and the like. And a user is allowed to configure and switch model parameters according to different experiment requirements, so as to adapt to various types of direct current motors (such as a brush direct current motor and a brushless direct current motor). The models are deployed on a processing platform (such as STM32, ATMEL and other real-time multi-core processors) supporting high-frequency real-time operation, the high-speed response capability of a simulation system to controller input is ensured, and the requirement for the response period of 50 ms or below required by a typical motor control loop is met.
Owner:EAST CHINA NORMAL UNIV

Multichannel SDI video signal switching system based on STM32

The invention discloses a multichannel SDI video signal switching system based on STM32, and relates to the technical field of video signal processing and switching control, in particular to the multichannel SDI video signal switching system based on the STM32. According to the system, a multi-domain isolation power supply system, a locking detection closed-loop criterion, programmable differential cross point routing, L-R-C hardware anti-interference and software multi-sample jitter removal, double-physical-layer communication and addressing, automatic fault-tolerant backspacing, online upgrading and logging and selectable high-speed evolution reservation are cooperatively integrated; and the signal integrity, reliability, expansibility and operation and maintenance plasticity are improved.
Owner:KUNMING NORTH INFRARED TECH CO LTD

IAP upgrading method, device and equipment based on STM32 serial port and medium

The invention relates to the technical field of embedded systems, and provides an IAP upgrading method and device based on an STM32 serial port, equipment and a medium. The method comprises the steps that integrity verification is carried out on a parameter area and an application program area in the Flash memory, the parameter area is an area for storing firmware management information in the Flash memory, and the application program area is an area for storing firmware execution codes in the Flash memory; when the verification is passed, executing a control right jump operation so as to enable the CPU to execute the application program; when the verification fails, receiving upgrading data sent by the upper computer through the serial port, and writing the received upgrading data into a Flash memory based on a DMA double-buffering mechanism; and carrying out integrity verification on the parameter area and the application program area again, and if the verification is passed, executing a control right jump operation so as to enable the CPU to execute the application program.
Owner:GUILIN UNIV OF AEROSPACE TECH

Low-power-consumption multi-mode intelligent flower maintenance device

The utility model provides a low-power consumption multi-mode intelligent flower maintenance device, and relates to the technical field of intelligent flower maintenance, the intelligent flower maintenance device comprises a double STM32 main control framework, a power supply module and a multi-source power supply switching module; the double STM32 main control framework comprises an image acquisition main control chip and an execution function main control chip; the power supply module comprises a solar panel (115) and a lithium battery (116); the multi-element power supply switching module comprises an INA226 voltage detector, a first relay, a second relay and an LM1117-3. 3V module. Through structural optimization and function integration of double master control, sub-rail power supply and modular connection, the intelligent level, the energy efficiency and the environmental adaptability of the flower maintenance device are remarkably improved, meanwhile, the maintenance complexity is reduced, and high practical value is achieved.
Owner:UNIV OF JINAN

An automatic device for measuring Young's modulus based on STM32 single-chip microcomputer

This invention discloses an automated device for measuring Young's modulus based on an STM32 microcontroller. The device includes a base, a parallel connecting rod fixedly connected to the upper side of the base, a top plate fixedly connected to the upper end of the parallel connecting rod, a pedestal on one side of the parallel connecting rod resting on the base, a measuring cylinder containing water, and a cylinder containing a tray connected to the upper end of the cylinder. A metal wire to be measured is fixedly connected between the tray and the top plate. A single-point weighing sensor is also provided on the base. This invention features a simple structure and operation, automated reading, automatic data calculation by the microcontroller, and fast result output, significantly reducing the shortcomings of existing devices that suffer from large reading errors and calculation errors due to structural defects.
Owner:ZHEJIANG SCI-TECH UNIV

Immersive exhibition hall environment joint control system based on STM32 and Unity 3D

According to the immersive exhibition hall environment joint control system based on STM32 and Unity 3D, direct logic association between sensor data and equipment actions is established through localized threshold judgment of an embedded terminal and real-time issuing of a control instruction, and the problems of low efficiency and insufficient reliability due to the fact that environment regulation depends on manual transfer are solved. Aiming at the problems that only one-way manual operation (such as equipment parameter adjustment by a Unity interface) is supported and an execution result cannot be verified in the prior art, two-way data binding of Unity and physical equipment is carried out, for example, the manual adjustment parameter is issued to the equipment in real time, and the equipment state is synchronously returned to an update model, so that the dynamic compatibility of manual control and automatic regulation and control is realized. While the flexibility of manual operation is kept, the consistency of a virtual model and a real environment state is ensured, and automatic regulation and control threshold triggering is allowed to serve as a safety boundary constraint of manual operation.
Owner:GUANGXI UNIVERSITY OF TECHNOLOGY

Method and system for improving detection resolution of digital closed-loop accelerometer

The invention provides a method and system for improving the detection resolution of a digital closed-loop accelerometer. The method comprises the steps that a pendulous reed, a first amplifier, an integrator, a second amplifier, an ADC chip, a digital signal processor STM32, a DAC chip, a third amplifier and a torquer are sequentially connected; a median value average filtering algorithm is added in a digital signal processor STM32 to preprocess data collected by an ADC chip, a data point collected earliest in a queue is removed every time one ADC datum is collected, then the maximum value and the minimum value of N data including new data are removed, and the maximum value and the minimum value of the N data including the new data are removed; and calculating an arithmetic mean value of the N-2 data to obtain a final acquisition result. The integrator is used for integrating the system error, and the acceleration detection resolution is improved by inversely resolving the current through the voltage. According to the technical scheme, the technical problem that the resolution of a digital accelerometer in the prior art is limited by ADC and DAC devices and is low is solved.
Owner:AEROSPACE SCI & IND INERTIA TECH CO LTD

STM32-based electronic dobby

InactiveCN121826958ADobbiesSTM32Parallel plate
The invention provides an STM32-based electronic dobby. The STM32-based electronic dobby structurally comprises a man-machine interaction screen, an electronic control cabinet, a damping structure, a metal loading frame and a heald lifting arm, the man-machine interaction screen is embedded into the side edge of the electronic control cabinet, and the lower end of the electronic control cabinet is embedded into the side edge of the damping structure; after a damping structure is improved, the positions of the clamping plates are determined through the parallel plates and the inserting blocks, then the clamping plates cover the edge of the metal loading frame through the damping plates in the clamping grooves, and the metal loading frame can be limited through the magnetic suction plates and the restraining blocks in the process; therefore, when multiple groups of heald lifting arms operate, kinetic energy conducted by the heald lifting arms can be absorbed through the clamping plates and the damping plates, the stability of the whole metal loading frame is improved, the original point positioning strength of the electronic control cabinet is improved by utilizing the reinforcing structure, the situation that a circuit is pulled and falls off due to instability of the electronic control cabinet is prevented, and the service life of the electronic control cabinet is prolonged. And the connection stability of the lifting heald arm, the internal component circuit of the metal loading frame and the electronic control cabinet is improved.
Owner:JIAN COLLEGE

Single-phase grounding fault line selection device for small-current grounding system

The utility model discloses a single-phase earth fault line selection device for a small current grounding system, and belongs to the technical field of single-phase earth fault detection of an electric power system. Comprising a PT / CT analog input module, a signal conditioning module, a data acquisition module and a data processing and control module which are connected in sequence, the data acquisition module is further connected with a data buffer module, and the data processing and control module is further connected with a data storage module, a display module, an alarm module and a communication module; the signal conditioning module comprises a signal voltage regulating circuit and a signal filtering circuit, the data acquisition module is formed by connecting two A / D converters with an FPGA chip, and whether a single-phase earth fault occurs or not is judged by monitoring a zero-sequence voltage at a bus through the FPGA chip; the data processing and control module adopts an STM32 single-chip microcomputer to carry out data processing and analysis to select a fault line. According to the utility model, an FPGA + STM32 dual-core structure is adopted to replace a conventional single processing structure, so that faults can be rapidly detected, and fault lines can be accurately judged.
Owner:ZHENGZHOU DIDE TECH CO LTD

Double-target positioning and closed-loop tracking system and method based on color feature recognition

The invention discloses a double-target positioning and closed-loop tracking system and method based on color feature recognition, belongs to the field of target recognition, and aims to solve the problems of low relative positioning precision, poor closed-loop tracking stability and weak color feature anti-interference capability in the prior art. The system comprises a PC, an STM32 controller, a camera, a stepping motor module, a two-dimensional mobile platform, a power supply module and a target. Wherein the STM32 controller is respectively connected with the stepping motor module and the PC; the PC is connected with the camera; the stepping motor module is connected with the two-dimensional moving platform, and the power module is connected with the STM32 controller and the stepping motor module and supplies power to the STM32 controller and the stepping motor module. The camera is used for collecting an image and identifying and positioning a target by adopting an identification algorithm based on the image, the two-dimensional mobile platform is used for tracking the target by adopting a tracking algorithm, and the positioning precision, the tracking stability and the anti-interference capability are improved.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

Intelligent temperature control system and method based on STM32 and LabVIEW

The invention discloses an intelligent temperature control system and method based on STM32 and LabVIEW, and belongs to the technical field of temperature control, and the system comprises an STM32 microcontroller which is used as a system main control unit; the digital temperature sensor module is connected with the STM32 microcontroller through a single bus protocol and is used for realizing digital temperature data acquisition of the electric hot plate; the relay driving control module is connected with the STM32 microcontroller and adjusts the on-off state of the electric heating plate according to the collected temperature data; and the LabVIEW upper computer software module is connected with the STM32 microcontroller through a serial port communication module and is used for providing a user interface, data processing and system monitoring functions. Through the system and the method, the precision of traditional temperature control is improved.
Owner:GUANGDONG UNIV OF PETROCHEMICAL TECH

An intelligent blind guiding stick based on STM32 and a control system thereof

ActiveCN117122496BImplement fall detectionImplement GPS positioning functionSTM32Control system
The application relates to the technical field of guide sticks, in particular to an intelligent guide stick based on an STM32 and a control system thereof, which comprises a guide stick rod, the guide stick rod is divided into three sections of upper, middle and lower, a power supply Bat, a loudspeaker SPK, an ultrasonic sensor HC-SR04, a fall judgment cancel button S2, a self-locking switch S1, an acceleration sensor ADXL345, a positioning module GSP and a short message communication module GSM are installed on the upper section of the guide stick rod; the application detects the existence of obstacles through an ultrasonic ranging circuit to give an obstacle avoidance reminder, detects the water level through a water level sensor to give a water accumulation reminder, combines the acceleration sensor to realize real-time monitoring of three-axis acceleration to achieve fall detection, and can also realize a GPS positioning function; if a user falls down and the button is not pressed within a certain time, an emergency help short message will be automatically sent to a preset number, and the current position information of the user is attached to the short message; meanwhile, the guide stick will play a help voice to ask for help from people around.
Owner:EAST CHINA UNIV OF TECH

A controller IO signal multiplexing fan device

This invention discloses a wind turbine device with multiplexed controller I / O signals, mainly comprising hardware circuitry and software control strategies. The hardware includes an SCI serial communication circuit based on an STM32 microcontroller, a speed / frequency signal / status output circuit, and an external analog / PWM speed control signal input circuit. The software strategy primarily determines the controller's operating mode based on specific voltage values ​​within different power-on time intervals, including external analog control, a fast communication mode with the host computer, and a slow communication mode with the host computer. This invention eliminates the cumbersome process of opening the wind turbine casing and damaging the internal thermal conductive adhesive required for maintenance of the field wind turbine controller. It utilizes only two control lines to achieve wind turbine speed control and speed signal / status feedback acquisition, while also allowing switching to serial communication between the host computer and the controller.
Owner:CHINA AERONAUTICAL CONTROL SYST RES INST

Heterogeneous fiber grating high-speed demodulation system based on STM32 and FPGA

The invention discloses a heterogeneous fiber bragg grating high-speed demodulation system based on an STM32 and an FPGA. The heterogeneous fiber bragg grating high-speed demodulation system comprises an optical path module, a data acquisition mainboard and an auxiliary control daughter board, the optical path module converts the optical signal into analog voltage; an FPGA on the data acquisition mainboard performs filtering and peak detection on the voltage signal to obtain an initial wavelength; the STM32 on the auxiliary daughter board completes temperature compensation to obtain a final wavelength and uploads the final wavelength to the upper computer; wherein the STM32 dynamically generates a processing instruction according to a working condition and sends the processing instruction to the FPGA, the FPGA adjusts processing logic and feeds back performance data according to the processing instruction, and the STM32 adaptively optimizes the instruction according to the feedback to form closed-loop cooperation. Compared with the prior art, the self-adaptive balance of high speed, high precision and low power consumption is realized in fiber bragg grating demodulation through a heterogeneous cooperation and dynamic optimization mechanism of the STM32 and the FPGA.
Owner:SHANGHAI UNIV

Key switching circuit for realizing STM32 serial port downloading / communication

The utility model discloses a key switching circuit for realizing STM32 serial port downloading / communication. The key switching circuit comprises a double-path D-type trigger U1, a phase inverter integrated chip U2, a resistor R3 and a key SW, the phase inverter integrated chip U2 comprises a phase inverter U2: A, a phase inverter U2: B and a phase inverter U2: C; a second pin of the key SW is connected in series to a resistor R3 and is connected to a third pin CLK of the double-path D-type trigger U1 through an RC charging and discharging circuit; a Q output of a fifth pin of the double-path D-type trigger U1 is connected with a phase inverter U2: B, is reversed and then is input into a D input of the double-path D-type trigger U1, and a sixth pin of the double-path D-type trigger U1 is used as a BOOT0 to be transmitted to an NRST pin of the STM32; the phase inverter U2: A inverts a low level signal generated by the key SW and then transmits the signal to a BOOT0 pin of the STM32 single-chip microcomputer. According to the utility model, the STM32 serial port downloading / communication function can be realized through the key.
Owner:JIANGSU MARITIME INST

Integrated measurement and control device based on active safety

The invention discloses an integrated measurement and control device based on active safety. The integrated measurement and control device comprises a variable-frequency power supply system, a safety protection system and a control system, the variable-frequency power supply system comprises an incoming cable, a variable-frequency power supply cabinet, a boosting transformer and a reactor; the control system comprises a central processing unit, a communication device and a man-machine interaction interface, and the central processing unit adopts an STM32 main control chip; the safety protection system comprises a multi-point infrared radar module with anti-electromagnetic interference capability, so that high integration is achieved, and the application range is wide; the system is safe and reliable, can monitor the flow of people in a test area in real time, and avoids safety accidents caused by poor monitoring. And the labor intensity of testers is reduced, the test process is simplified, and the working efficiency is improved.
Owner:DALIAN POWER SUPPLY COMPANY STATE GRID LIAONING ELECTRIC POWER

Multi-tooth indexing table control device based on inductive encoder

The invention discloses a multi-tooth indexing table control device based on an inductance type encoder, closed-loop control is carried out through the inductance type encoder, the real-time angle value of a multi-tooth indexing table is obtained according to terminal feedback, the control device adopts an STM32 single-chip microcomputer as a main control chip of a control circuit, a lifting motor and a transposition motor are controlled through PWM signals, and the control circuit is connected with the control device. Driving force is transmitted to an upper fluted disc of the multi-tooth indexing table, so that the multi-tooth indexing table can accurately complete ascending, descending and transposition operations; closed-loop control is achieved through the inductive encoder, interference of external environments such as electricity, a magnetic field and a force field on control signals is effectively avoided, the fault probability of the multi-tooth indexing table is reduced, and the angle output or measurement precision of the multi-tooth indexing table is improved; the main control chip of the control circuit adopts an STM32 single-chip microcomputer, and has the advantages of small size, low power consumption, strong stability and rich resources.
Owner:JIUJIANG JINGDA MEASUREMENT TECH