STM32 Single Chip Microcomputer Research Articles

Structural Design and Analysis of Portable Intelligent Wheelchair for Knee Rehabilitation

In order to address the issues of inconvenience, high medical costs, and lack of universality associated with traditional knee rehabilitation equipment, a portable intelligent wheelchair for knee rehabilitation was designed in this study. Based on the analysis of the knee joint's structure and rehabilitation mechanisms, an electric pushrod-driven rehabilitation institution was developed. A multi-functional module was designed with a modular approach, and the control of the wheelchair body and each functional module was implemented using an STM32 single-chip microcomputer. A three-dimensional model was established using SolidWorks software. In conjunction with Adams and Ansys simulation software, kinematic and static analyses were conducted on the knee joint rehabilitation institution and its core components. A prototype was constructed to verify the equipment's actual performance. According to the prototype testing, the actual range of motion for the knee joint swing rod is 15.1°~88.9°, the angular speed of the swing rod ranges from -7.9 to 8.1°/s, the angular acceleration of the swing rod varies from -4.2 to 1.6°/s², the thrust range of the electric pushrod is -82.6 to 153.1 N, and the maximum displacement of the load pedal is approximately 1.7 mm, with the leg support exhibiting a maximum deformation of about 1.5 mm. The intelligent knee joint rehabilitation wheelchair meets the designed functions and its actual performance aligns with the design criteria, thus validating the rationality and feasibility of the structural design.

Design of electrical cabinet wire cutting machine based on STM32

Abstract The wire in the electric cabinet is one of the keys to ensuring the normal operation of the electric cabinet. In order to improve the production efficiency of wire cutting, this project designed a wire-cutting machine for an electrical cabinet, which could recognize the CSV table file of the electrical cabinet wiring list on a U disk and cut wires of different lengths and quantities according to the order in the file. The main control chip of the device uses STM32 single chip microcomputer (STM32F103C8T6) and CH376S module to realize the function of reading CSV file on U disk through serial communication. In terms of control, the device adopts a proportional-integral-differential (PID) control algorithm to achieve accurate control of the JGB37-520 gear motor and TD-8120MG steering gear and then realizes wire feeding, wire stripping, cutting, and other functions. The experimental results show that the average relative error of length is about 0.5%, and the error is within a reasonable range.

Design and Performance Analysis of Soft Crawling Robot Based on Photoelectric Sensor/STM32

In this study, a control system based on STM32/photoelectric sensor is designed for soft crawling robot. The system consists of a front-end camera installed on soft robot, wireless routing, STM32 single-chip microcomputer and several photoelectric sensors. In this design, STM32 single-chip microcomputer is used as the main controller to send instructions to the four-limb drive steering gear through RS-485 module, and the feedback incentive mechanism is adopted to improve the accuracy and stability of the digital steering gear system. In order to better perceive the working environment, this design is also equipped with a variety of photoelectric level sensors, and photoelectric pressure sensors are installed to monitor the perceived pressure of the robot to make it move better on the ground. The photoelectric sensor is used to realize the soft crawling robot walking according to the planned route. The photoelectric tilt robot is used to change the walking direction during the moving process. Through the overall cooperation of the above components, the movement angle of limbs can be changed to make them crawl under narrow conditions. In the experiment, soft robot’s posture information is collected by various photoelectric sensors and displayed on the corresponding control interface, so that it can walk at the specified gait and leg swinging frequency. On the flat road, the swinging frequency of the robot first increases and then gradually stabilizes, and the movement efficiency is maintained at about 75% at the maximum movement speed.

Intelligent pet cat care residence design based on cloud platform

In order to provide an intelligent living environment for pet cats, so that owners can understand and control the daily life of pet cats, and communicate and interact with them through voice, a remote pet cat care system was designed. The system uses a remote monitoring function that combines a cloud platform and a camera, allowing owners to keep an eye on their pet cats' movements even when they are away from home. This system uses PLC as the main control unit and STM32 single chip microcomputer as the slave, which can not only collect temperature, humidity, light intensity, pressure and other signals, but also carry out real-time control of the controllable hardware in the system, and transmit the collected data to the cloud platform. 4G communication technology is adopted, and users can remotely complete the intelligent control of all equipment in the system through the cloud platform. To realize real-time monitoring and interaction of pet cats in all aspects; According to the pet cat daily diet, drinking water, exercise and other important data to determine whether the physical health. This can improve the service level of the pet cage industry and inject technological power to make pet cages more intelligent.

Design And Implementation of Smart Pet House Temperature Monitoring System Based on STM32 Single-Chip Microcomputer

With the development of social economy and the acceleration of urbanization as well as the increasingly heavier burden of social competition, keeping pets has become an important pastime for more and more families which result in the improvement of the market of pet caring. In order to take better care of pets more efficiently, in this paper, the author designs a smart pet house temperature monitoring system based on STM32 single chip microcomputer with the interaction to the upper computer. The intelligent pet house temperature monitoring system chooses STM32F102C6T6 single chip microcomputer controller as the controlling core and designs several circuits to achieve each required function. The overall designed system realizes the function of pet house temperature measurement with displaying on the LED connected to the single chip and data transmission to PCs with real-time plotting through the MATLAB. Experimental results show that the temperature monitoring system can timely measure the temperature in the pet house, and prove the feasibility of the design. Consequently, the designed system quality can be guaranteed to a great extent.

Health Monitoring System for Medical Staff based on STM32 MCU

With the development of society, the work health monitoring of medical staff has gradually become an important issue. Long hours of continuous work, high intensity of physical and psychological pressure bring physical health problems for medical staff. In view of this phenomenon, a new type of health monitoring equipment for medical staff is developed, aiming at providing comprehensive health monitoring services. The medical monitoring system uses STM32 single chip microcomputer as the core controller, which has the functions of heart rate monitoring, step statistics, temperature measurement, alarm reminder, SMS reminder and so on. Worn on places such as a healthcare worker's wrist, the device can monitor their heart rate changes in real time and record their steps. This provides health care workers with convenient health data to help them understand their physical condition. The device has the advantages of simple operation, complete functions and beautiful appearance design. The intelligent device can provide comprehensive and accurate health monitoring services for medical personnel, and has a good market prospect.

Design of Intelligent Voice Greenhouse System Based on STM32 MCU

The traditional agricultural management mode no longer meets the needs of modern society, necessitating the development of modern agriculture. However, the limited education level in rural areas and the difficulty in popularizing complex IoT systems and internet platforms pose challenges to the development of intelligent agriculture. To address this, this paper proposes an intelligent voice greenhouse system based on a traditional STM32 single-chip microcomputer. The system utilizes various sensors to monitor environmental parameters and enable voice interactive control. This simple and practical approach promotes the use of smart agriculture, making it more accessible and easier to use. Physical testing has confirmed the effectiveness of this method, which will contribute to the development of intelligent agriculture in the future.

A search and rescue robot device realization based on ROS operating system combined with visual algorithm

Aiming at the problem of low accuracy of intelligent devices to find missing people, a search and rescue robot device based on ROS intelligent navigation system was proposed. SolidWorks was used to improve the new mechanical structure that can switch autonomously to different terrain and combined with Yolov5 deep learning algorithm to complete face recognition. Using the stm32 single-chip microcomputer, we adjusted the cascade PID parameters of the motor and simulation to realize the omnidirectional movement control of the robot. Through the analysis and verification of the experimental data, the adaptive ability of the improved robot platform to the terrain was significantly improved. The method can accurately complete the task of face recognition and autonomous navigation, which is practical and improves the accuracy of finding the missing people.

Research on Simulation System of Microgrids based on STM32

With the gradual depletion of traditional fossil energy and the increasing demand for electricity, finding new energy sources has become the only way for sustainable development. Microgrid is becoming an important auxiliary power for some developed and developing countries to solve the supply problem of energy system, which can not only effectively improve the overall utilization rate of renewable energy, but also improve the power supply reliability of the main grid. In this paper, the hardware circuit and software control of microgrid simulation system based on STM32 are studied and designed. The main circuit design of microgrid simulation system is based on STM32 single chip microcomputer as the main control core, and the pulse modulation signal SPWM is output through the software program of STM32F103CBT6 single chip microcomputer. The MOS driving circuit provides driving voltage and control signal to drive the inverter bridge to invert DC into AC. The inverter bridge is modulated by SPWM control technology, and the high-frequency signal in AC is filtered by low-pass filtering circuit, and finally the stable AC with a fixed frequency of 50 Hz is the output. By calculating the device parameters of the main control circuit and the full-bridge inverter circuit in the hardware unit circuit, and making appropriate selection of components, the specific model is determined, and finally the circuit design of the whole circuit is completed. The hardware circuit is designed rationally by Altium designer, and the software circuit is programmed by Keil. The influence of SPWM signal output by the circuit on the resistance load and its output waveform is analyzed comprehensively, and the influence of working frequency on the output waveform of the circuit is studied.

Design of Sweeping Robot Based on STM32 Single Chip Microcomputer

As a new product in the field of service robots, the sweeping robot has made some achievements, but there are still many key technical problems to be solved or improved. This paper focuses on the precise obstacle avoidance and highly sensitive execution of the sweeping robot, and designs a sweeping robot based on STM32 microcontroller. The infrared ranging and ultrasonic ranging are combined to achieve accurate data acquisition. When the measurement distance is relatively close, infrared ranging is used. Otherwise, the ultrasonic distance measurement is adopted. In addition, PID algorithm is used to speed up the response of the system, and the motion state of the sweeping robot is adjusted through prediction data to ensure the accuracy of STM32 execution. It provides reference for the development of sweeping robot industry.

Design of portable multi-channel isolated CNC-regulated power supply

In order to facilitate the testing needs of electronic engineers, a multi-channel isolation adjustable switching regulated power supply controlled by an STM32 single-chip microcomputer is designed [1]. The power supply is programmable and adjustable by a single-chip microcomputer, and the humanized display operation interface is combined with the high efficiency of switching the power supply. It can realize three channels of 30v2a isolated output, and realize one channel of 90v2a or 30v6a output through a relay automatic switching series-parallel combination, to maximize power density. The power supply has the characteristics of high integration, small volume, large power, large adjustable range, high precision, and high efficiency. It can be applied to the debugging and operation of most electronic equipment.

Design of On-line Monitoring System for Photovoltaic Power Generation Power Quality Based on Stm32

Monitoring the quality of photovoltaic power generation in remote mountain areas is difficult, so this paper proposes a real-time online monitoring system to solve the problem by using AD7606 high-precision ADC chip and STM32 single-chip microcomputer. AD7606 realizes real-time acquisition and conversion of three-phase power data. STM32 performs wavelet transformation on the collected data to obtain power quality parameters. It stores the power quality parameters in the SD card and then uploads the power quality parameters to the host computer through Lora to display each power quality parameter in real time. Experiments show that the system can reliably realize on-line real-time monitoring of the power quality of photovoltaic power generation.

Development of DC Parameter Calibration Module for Digital Integrated Circuit Test System

Aiming at the on-site measurement requirements of the integrated circuit test system, this paper designs the DC parameter calibration module of the digital integrated circuit test system based on STM32 single-chip microcomputer as the core control, studies the methods of precision improvement based on multiple groups of devices, noise control, and error compensation, reduce the volume of the device, simplifies the measurement loop in the calibration process, and improves the DC parameter calibration accuracy of the digital channel of the integrated circuit test system, improve the portability and ease of use of the calibration device, and lay the foundation for the calibration device of the new generation integrated circuit test system.

Design of Fire Extinguishing Robot

In order to reduce the risk of fire extinguishing and protect the safety of people's lives and property. Design a trolley with fire warning, autonomous patrol, autonomous obstacle avoidance, and automatic fire extinguishing. The car can replace patrol personnel, carry out uninterrupted patrols in fire-prone situations, and alarm when dangerous gases or smoke are generated. When the robot detects a fire, it immediately performs intelligent fire extinguishing. The fire extinguishing robot of this paper mainly involves the application of STM32 single-chip microcomputer and multi-sensor, the design of steering mechanism of the servo, the position arrangement of sensors, and the writing of algorithms.

Design of Automatic Irrigation Robot Based on Tracking and Visual Recognition

The purpose of this project is to design an automatic watering robot with tracing module and visual module, which is equipped with watering, spraying and supporting facilities. This product aims to solve the problems of difficult management of potted plants in flower lovers ' families or greenhouses, and high mortality caused by neglect of management of flowers due to human factors. The project takes STM32 single-chip microcomputer as the core, with tracing module and visual recognition module. The execution module adopts belt transmission, combined with Internet of things, path automatic planning, magnetic coupling resonance wireless charging and other technologies to realize the application of robot automatic irrigation and spraying by autonomous planning of road trajectory. The project has good promotion value in the flower market and smart home.

Design of intelligent window opening system based on multi-sensor fusion

The traditional electric window opener has the problems of low efficiency and single control mode. In view of the above shortcomings, an intelligent electric window opener control system based on multi-sensor fusion is designed. The system uses data acquisition, data processing, wireless communication, remote control, and other technologies to realize the real-time monitoring of environmental status through the fusion of temperature, light intensity, smoke, rain, and other sensors. When the monitoring data reaches the set value, the intelligent window opener will automatically open or close. The whole system is based on an STM32 single-chip microcomputer and uses the ESP8266 Internet of things module to realize the remote monitoring and control of the platform. In the aspect of window opening motor control, the proportional integral derivative (PID) is used to control the DC motor for the accurate window opening. The experimental results show that the overall operation of the system is stable, the response is rapid, the sensor accuracy is high, the system error is less than 5%, and the long-term operation shows good stability and reliability.

Design of PM2.5 Measurement and Alarm System based on STM32

The rapid development of high-tech has brought a lot of convenience to people's life and work, especially the single-chip technology, which is widely used in many sensing devices, and is becoming increasingly miniaturized and diversified. This design mainly uses STM32 single chip microcomputer as the core board, uses GP2Y dust sensor to collect PM data in the tested environment, sends the collected data to STM32 core board, uses the control function of the chip to calculate and process its data, and transmits it to the display to display the data. This design can facilitate people to detect the air quality of the surrounding environment at any time, improve people's surrounding environment and improve their physical fitness.

Development of A Novel Adaptive Range Strain Sensor for Structural Crack Monitoring

Ocean platforms that are under complex sea conditions and loads for long periods are prone to fatigue cracks. These cracks may lead to large deformations, even displacement, of the platform, and should be monitored to ensure engineering safety. Cracks are not easily detected in the micro stage and small levels of strain measurement are required to ensure high accuracy. Furthermore, cracks are prone to suddenly developing into large deformations, especially in structural connections in practical engineering. This study developed a novel adaptive range strain sensor for structural crack monitoring that can monitor the whole structural crack propagation process in ocean platforms. The strain sensor is used for micro deformation monitoring through its fiber Bragg grating (FBG) sensor with high sensitivity. The sensor can automatically adapt to crack fractures and provide warnings through an STM32 single-chip microcomputer (SCM) system when the structure suddenly cracks, causing large deformation. The experimental results demonstrate that the device has high precision in micro measurement with the ability to capture structural fractures. The field application shows the high strain sensitivity of the sensor in crack monitoring, which indicates that the adaptive range strain sensor is suitable for the structural crack monitoring of ocean platforms.

The Design and Implementation of a Subway Monitoring System

This design takes STM32 single chip microcomputer as the core, and uses keil as the compiling environment of single chip microcomputer program in the software. The circuit schematic diagram of subway monitoring system is drawn on Altium designer.STM32 single chip microcomputer, infrared monitoring, temperature and humidity sensor, pressure sensor, LCD display, voice broadcasting system, alarm system Switches and other hardware are connected together by hand welding tools according to the schematic diagram and the functional requirements.

Retracted: Research on Analysis and Classification of Vulnerability of Electromagnetic Pulse with a STM32 Single-Chip Microcomputer

Retracted: Research on Analysis and Classification of Vulnerability of Electromagnetic Pulse with a STM32 Single-Chip Microcomputer