Serial Port Research Articles

A Solar-Rechargeable Radiation Dosimeter Design for Radiation Hazard Zone Located with LoRa Network

Since the nuclear energy leakage that occurred at the Fukushima nuclear power plant in Japan, people have paid more attention to the danger of environmental radiation. Environmental radiation is monitored using Geiger counters, which are not easy to obtain in some areas. Therefore, this research proposes an open-source and low-cost handheld Geiger counter that uses solar energy to charge lithium-ion batteries. Our design can provide a low-cost environmental radiation monitoring platform and effectively enhance the public’s scientific education awareness of radiation hazards. The measured dose rate can be output through the serial port, allowing a LoRa wireless network to transmit data to a database. When the sensing network deployed by the radiometer detects that the radiation value of the area is abnormally increased, it can issue an alarm to the government for the first time. Moreover, the low-power radiometer design can reduce energy consumption, reduce the burden on the ecological environment caused by the deployment of the sensing network, and provide sustainability for the environment.

Design and Construction of Intelligent Corridor of Tourist Attractions Based on Sensor Network

This paper presents an in-depth analysis and study of traditional corridor construction and tourism system planning using intelligent sensing networks. This paper proposes a node deployment and coverage optimization method for HWSNs based on particle swarm optimization emperor butterfly algorithm and extreme learning machine, with the objectives of reducing node deployment cost, reducing coverage redundancy and voids, improving monitoring area coverage, and increasing the agility of data processing by 15.03%, efficiency by 12.15%, and stability by 11.31%. In the paper, the static parameter table of the sensor is stored inside the smart sensor or stored on the IoT cloud platform to achieve automatic registration of the static parameters of the smart sensor. According to the characteristics of dynamic parameters of smart sensors, an autonegotiation algorithm is designed to realize the dynamic parameters of smart sensors to be determined by autonegotiation and complete registration without human intervention, which includes four parts: utility function, concussion protocol, proposal generation strategy, and response mechanism. The intelligent sensing system is composed of three parts: smart sensor, IoT gateway, and IoT cloud platform; the functions of each part in the system are analyzed, and MAR and STM32F4 are selected as the core board of smart sensor and IoT gateway. And for the problems of time-consuming and tedious access to smart sensors in the system, we propose to study the adaptive sensor UART serial port parameters and automatic registration of sensor parameters. Based on the analysis of the current environment and resource characteristics of the traditional corridor, the current situation of ecotourism resources of the traditional corridor is sorted out, an evaluation index system is established to evaluate ecotourism resources, and the current development basis is analyzed from four aspects: natural environment, tourism resources, product development, and infrastructure. Finally, to promote the sustainable development of the ecotourism corridor in the Chengdu section of the southern foot of the Qinling Mountains, the planning and development strategies to match the ecotourism corridor in the Chengdu section of the southern foot of the Qinling Mountains are proposed in four aspects: transportation organization optimization, ecological landscape enhancement, support system construction, and regional tourism development.

Mobile semi‐physical experiment platform using ultra‐compact real‐time simulator Pocket Bench for power electronics courses

AbstractThe potential electrical hazard, the unreal experience, and the time‐space inflexibility of the existing practical learning equipment are the barriers to the development of power electronics courses. To address these, this article introduces a mobile semi‐physical experiment platform using Pocket Bench. The Pocket Bench is an ultra‐compact Hardware‐In‐the‐Loop real‐time simulator, which can emulate the power electronic circuit with a 1.25 μs time step, and provide real‐time response signals to the physical controller. As the dangerous electrical power flow in the power electronic circuit is emulated in real‐time, the electrical hazards are eliminated. In practical learning, the students can implement the semi‐physical experiment system quickly by connecting the physical controller to the simulator. With the physical controller reserved, the students can get hands‐on experiences with the real hardware. More importantly, the palm‐size, lightweight simulator can be put into the pocket, and it can be directly powered by the universal serial bus port. Therefore, the semi‐physical experiment platform using Pocket Bench can be deployed with high time‐space flexibility. The distinctive features and the deployment method for the platform are illustrated. The application cases regarding the direct current (DC)‐DC converter, rectifier, and inverter are also given. A student survey concerning the feasibility, fidelity, and flexibility of the simulator was also conducted. The results show that the Pocket Bench grants the students new capabilities to safely carry out the practical learning of power electronics anytime, anywhere, with high‐fidelity sensory experience.

Personalized Information Service System of Smart Library Based on Multimedia Network Technology.

Scientific and objective book quality evaluation and research on the value of books in the smart library are conducive to improving the reading needs of readers. However, it is difficult to obtain the important coefficient of the subjective and objective weight of the personalized information service index of the smart library at present, which has the problem of poor system performance. Therefore, a personalized information service system of the smart library based on multimedia network technology is designed. In multimedia network technology, the data collector module, data retriever module, and data memory module of the system hardware are designed. The Ethernet interface is connected through three buses to ensure the efficient operation of the system; according to the hardware, the software flow is introduced, which is divided into UI layer, logical business layer, and data access layer. On this basis, the application program is designed, all operation instructions follow the association rules, and the single-chip microcomputer is connected with the voice chip through the SPI serial port, so as to complete the design of the personalized information service system of the smart library. The experimental results show that the average absolute deviation of the designed system is small, the comprehensive performance is strong, and the update delay is kept within 0.6 s, which can improve the work efficiency.

Detection of EEG Patterns for Induced Fear Emotion State via EMOTIV EEG Testbench

In this study, International Affective Picture System (IAPS) were used to evoke fear and neutral stimuli using EMOTIV EPOC EEG recognition system (n=15). During the experiments, EEG data were recorded using the Test bench program. To synchronize the EEG records, IAPS pictures were reflected on the screen. A Python script was written in the Open Sesame program to provide a synchronized data flow in the Input/Output channels of the installed virtual serial port. The Event-Related Oscillations (ERO) responses and Event-Related Potentials (ERPs) were calculated. Statistically significant differences (p

Monitoring and Management of Street Lighting System using Internet of Things

Different forms of utilization of electrical energy include lighting system. General lighting system provided by utilities must be ensured that there is no wastage of power during consumption. Street lighting is of importance keeping in view of prevention of accidents and adequate lighting must ensure safety and comfortable driving. In this paper, Internet of Things (IoT) is used to monitor and manage street lighting system. IoT based nodes and sensors are arranged in such a manner that wastage of power consumption is avoided. Transformers, relays light dependent Resistor (LDR) sensor and passive infrared (PIR) sensors are the major equipment in the setup. Raspberry Pi and Arduino serve as nodes through wireless serial port communication HC-12 module. Instrument transformers are used for voltage and current measurement. Monitoring can be done if the respective power consumption values are uploaded to server. In this paper, it is shown that this model results in effective monitoring and management of street lighting system using IoT.

Digital Tri-Axis Accelerometer with X/Y-Axial Resonators and Z-Axial Capacitive Seesaw.

A tri-axis accelerometer with a digital readout circuit and communication system is introduced. It is composed of two resonant accelerometers in the x and y-axis, and a seesaw capacitive one in the z-axis. The device is encapsulated in air to ensure that the z-axis works in an over-damped state. Moreover, the closed-loop drive circuit establishes the x-axis and y-axis in resonant mode, and the z-axis in force balance mode. A miniaturized measurement based on FPGA is designed to collect these output signals. The phase noise of the resonance part and the amplitude noise of the seesaw part are studied by simulation. The model can predict the contribution of each part to the measurement error and Allan variance. Multiplied clock and Kalman filter in sliding window are used to reduce the frequency error. The test results show that the accelerometer has low bias instability (<30 μg), low cross-coupling error (<0.5%), and low nonlinearity (<0.1%). The tri-axis digital accelerometer with serial ports is more valuable than the previous works with large commercial instruments.

Information Steganography Technology of Optical Communication Sensor Network Based on Virtual Reality Technology

In order to solve the problems of narrow object orientation and insufficient visual rendering ability of the optical communication network experimental system, the author proposes a multithreaded scheduling using virtual reality, and the experimental system design method of optical communication network with multichannel serial port design is proposed. The system builds the overall structure model of the optical communication network experimental system in the virtual reality environment, and uses the PCI bus technology to build the transmission channel model of the optical communication network, the basic entity object of the optical communication network experimental system is constructed, and the multithread scheduling method is used to process the local information of the experimental system. The result obtained is as follows: The experimental system of optical communication network designed by the author’s method, the optical communication transmission bit error rate is reduced by about 30%, the time overhead is saved by about 60%, and the memory overhead is saved by about 50%, which is superior. Using the author’s method, the maximum bit error rate is about 22%, while the maximum bit error rate of traditional method 1 is about 43%, and the maximum bit error rate of traditional method 2 is about 70%. It is proven that the visual simulation effect of the optical communication network experimental system is good, the reliability and stability of the optical communication network are improved, and the communication transmission error is reduced.

Wasted mask collection robot

With the spread of major respiratory infectious diseases such as the new coronavirus pneumonia on a large scale worldwide, various countries and regions have taken medical supplies such as disposable medical masks (DMMs, mainly composed of a large variety of polymer material polypropylene PP). The demand is constantly rising. A large number of discarded masks are mixed in the streets and alleys, and the recycling process is extremely risky. In this era, it is particularly important to realize manual remote control of the collection of discarded masks. The waste mask collection robot mentioned in this article adopts a modular design method and carries out the system design, control system design, and hardware structure design for each part of the waste mask collection. In terms of the hardware system, a detailed analysis has been made on the chip model and the specifications of each application device and a reasonable design have been carried out. The design requirements of various parts are introduced, and their structure and function in the device are described in detail. Related hardware circuits are designed, such as the manipulator motor drive circuit and its control circuit. In terms of the software system, the driver program, the function program of the host computer, and the STM32 single-chip microcomputer, such as PWM motor driver and serial port communication, are designed. In terms of control system design, based on the Robot-link Wi-Fi wireless data transmission module, a set of information interaction codes between the host computer and the STM32 single-chip microcomputer is designed, which can realize ultra-low delay control. The PWM motor drive and serial communication were tested for the function. After the program was burned, the expected function was completed, and the actual product was finally assembled and tested to achieve the expected function.

Influence of Embedded Microprocessor Wireless Communication in the Ankle Joint Proprioception Training on the Prevention of Football Sports Injuries

This study synthesizes the relevant publications on the therapy of horizontal joint destabilization of the functional ankle and investigates the effect of anterior motion ankle drills on the inability to cause ankle injuries in soccer teams. We chose university soccer teams as the study population and divided them into five men’s and five women’s squads and five control groups. Embedded microcontrollers are also called microcontrollers. Generally, we focus on a specific type of microprocessor center, integrating ROM/EPROM, RAM, Bus Logic, Timer/Counter, Watchdog, I/O, Serial Port, Pulse Width Modulation Output, A/D, D/A, and more. Functions and Devices. Representative embedded microcontrollers include PSIXA, 8051, MCS-251, MCS96/196/296, and C166/167. With the continuous improvement of the processor’s computing power and chip integration, the differences between embedded microprocessors and embedded microprocessors have further increased. Blurred. The test subjects experienced force testing and the trial subjects involved in ankle native sensory drilling. The experimental results show that the average direction has a statistically significant effect on the front, back, left, and right running ability, which increases significantly after 0.017, 0.032, and 0.043 P, respectively, providing a more scientific basis for preventing football injuries.

Home Automation Using Multinode Cooperative Network

Home monitoring can be implemented in a low-cost manner using this proposed project. The existing system involves high-cost equipment which cannot be utilized by a normal person. In the proposed model the overall design of home monitoring uses the multinode co-operative network. It mainly focuses on the development of the home monitoring system which can be implemented using NodeMCU. The highlight of the project is to use the NodeMCU embedded with Wi-Fi technology which enables the transmission of the sensed data to the cloud. The Proposed model will monitor the working status of various equipment in the home. Based on the data sensed from the equipment the information is shared in a cooperative manner with the remote monitoring unit. The Amplify and Forward cooperative protocol is used to transmit the data to the destination. The main advantage of the cooperative network is to enhance the signal reception quality and to improve the monitoring of the status round the clock. A popular open-source platform to execute the process of transmission, processing, and receiving data without losing the intensity. We are going to use multiple nodes to decrease the fault while working with them. These node MCUs are used for many projects as it is very cheap. It also has integrated support for the Wi-Fi network. Its compact size is an added advantage. It has low energy consumption property and reliable secure cloud storage. They have a user-friendly programming environment and a scripting language that is easy to learn. These are mainly used in IoT home automation, security alarms, incubators, controller, Internet smoke alarms, serial port monitors, and VR trackers.

Wearable Power Assistant Robot Sensor Signal Prediction Algorithm and Controller Design.

The wearable power-assisted robot is a typical auxiliary rehabilitation robot. It is an exoskeleton power-assisted device that helps people to expand their lower limb movement capabilities. Its basic principle is to obtain the motion intention information of the human body through the perception system. Control the DC servo motor installed at the hip joint and the knee joint to drive the movement of the link, so as to achieve the purpose of providing assistance to the human body. In order to improve the dynamic response frequency of the wearable robotic perception system, a sensor signal based on time series analysis is proposed. The online prediction algorithm, which can perform single-step or multistep prediction under the premise of ensuring certain accuracy, can multiply the dynamic response frequency of the wearable-assisted robot sensing system to ensure the real-time performance of the whole system. In order to realize the sensor signal prediction algorithm, we design the corresponding software and hardware system to realize the prediction algorithm. The whole sensor signal prediction algorithm implementation system can be divided into two parts: lower computer and upper computer. The lower computer includes amplification circuit, signal conditioning circuit, and acquisition. The signal processing software part of the circuit and the corresponding MCU and the upper computer mainly include the data acquisition and prediction algorithm implementation, and the upper computer adopts the mixed programming technology of Vc++ and MATLAB to complete the software part of the upper computer. Aiming at the control part of the wearable robotic sensing system, the first generation of DC servo motor embedded motion controller is designed. The motion controller adopts the design concept of embedded motion controller, which has small size, is light weight, and has good expandability. And the motion controller can communicate and debug with the host computer through the serial port, which lays a foundation for the design of the entire embedded control system.

Design and Implementation of Electrical Parameter Monitoring System Based on ZigBee Wireless Communication

In order to solve the problems of many lines, troublesome movement and redundant management of traditional electrical parameter monitoring system, a design and implementation of electrical parameter monitoring system based on ZigBee wireless communication is proposed. Taking the monitor as an example, this paper briefly introduces the application status of the monitor monitoring system and electrical safety detection. According to the comparison of wireless communication technology and the analysis of actual demand, this paper expounds the advantages of ZigBee wireless technology. Based on the combination of received signal strength indication (RSSI) ranging algorithm and trilateral positioning algorithm, the wireless positioning of mobile targets is realized. Then, the sparse correlation matrix of signal attenuation coefficient between base stations is established in the upper computer to optimize the positioning by using the look-up table method. The relevant test results show that through the serial port test software 2000 times of data transmission and reception, 1866 times of communication are successful, and the success rate is 93.3%, which basically meets the requirements of data transmission stability; After data transmission time detection, it takes about 1.4 seconds to send data from the monitor to the client for reception. The client sends the module query command, and the time when the command reaches the monitor is 1.6 seconds. The data transmission speed can basically meet the requirements of real-time monitoring. The design and implementation of the monitoring system can not only help to reduce the workload of medical staff in hospital nurse stations and improve their work efficiency, but also provide the possibility of practical significance for developing into an application tool for patient family members or personal health management in the future.

Artificial Intelligence Monitoring System Using ZigBee Wireless Network Technology in Warehousing and Logistics Innovation and Economic Cost Management

The study expects to reduce the development cost and energy consumption of the storage environment monitoring and improve the efficiency of the storage monitoring environment. Firstly, the storage environment monitoring system is designed in detail using ZigBee. It includes the design of terminal nodes, router nodes, coordinator nodes, and upper computer software. Here is a detailed description of the process of establishing a communication network for three different types of devices in the ZigBee network. The address allocation mechanism of the ZigBee network is introduced. Then, through the application of activity-based costing, the cost reduction is achieved as expected. Finally, the evaluation model of the storage logistics cost level is established, and the various reasons that affect the storage logistics cost are analyzed. The completed warehouse environment monitoring system is a tree topology network composed of a ZigBee coordinator, several ZigBee routing nodes, and terminal devices through the above design. The coordinator in the network is responsible for establishing the network, and it can communicate with the host computer through the serial port. The terminal node collects environmental parameter information and feeds the data back to the ZigBee coordinator through wireless multihop. The ZigBee routing node is mainly used to expand the range of the network to achieve the purpose of wireless monitoring of the entire storage environment. This provides a reference for the combination of wireless communication technology and sensor technology.

Absolute Photoelectric Encoder and Its Adoption in Fertilizing Corn Machinery in Ridge Planting

Absolute photoelectric encoder has the advantages of output data only corresponding to one position, requiring absolute zero position, no need to search for zero position after power failure and restart, and no cumulative error. Firstly, the principle of the traditional absolute photoelectric encoder is analyzed, and the matrix code plate is adopted to complete the production of the 16-bit absolute photoelectric encoder code plate, which reduces the volume of the high digit encoder. Then, K9 glass is chosen for the material of code plate and slit plate, which has good light transmittance and can improve the precision of photoelectric encoder. Giving that that the performance of light source of photoelectric encoder directly determines the accuracy of photoelectric encoder, bullet SE2470 light-emitting diode is selected as the emitting light source. It has a beam angle of 18 degrees and a large operating temperature range, supporting the working wavelength of 880 nm. The receiving light source is set as the bullet photosensitive triode SD2440, which has low power consumption, with 48 degrees of receiving angle, can be directly mounted to the double-sided PCB board. Finally, the designed absolute photoelectric encoder is used in the ridge corn mechanical fertilization system, and the system controller adjusts the opening of proportional valve through the motor speed signal fed back by the photoelectric encoder. In the experiment, the absolute photoelectric encoder is tested with the help of serial debugging assistant. When the encoder does not rotate the serial port, the output data of the assistant does not change. When the encoder rotates, the result change after receiving a lot of data due to the high baud rate. The error of each fertilization tube in the mechanical fertilization system of ridge planting corn is less than 3%, the coefficient of variation is less than 0.05, and thus the economic benefit of fertilization is improved.

Singularity Analysis of a Hybrid Serial-Cable Driven Planar Robot

Inthis study, we address the problem of singularities of a hybrid serial-cabledriven planar robot. Based on an analytical kinetostatic analysis three typesof singularities are determined, i.e., serial, parallel, and combinedsingularities. In addition, cable tensions should be positive, otherwise, therobot will be uncontrollable. The serial singularity corresponds to positionswhere the serial port of the robot is fully extended or fully folded. Theparallel singularity corresponds to aligned cables and combined singularitiescorrespond to both cases. Cable tensions distribution, within the workspace, isdetermined, which allowed the identification of regions where the cabletensions exceed an allowable value. The influence of physical parameters on theworkspace of the robot and its singular configurations is also studied. Anexample of a gait rehabilitation system using this type of robot is shown.Based on the kinetostatic analysis, multi-objective optimization of thedexterity and the cable tensions is performed, which yielded solutionsrepresented by a Pareto front. The results have been extended to the case of 3degrees of freedom hybrid robot.

Design and Implementation of Dual-channel 100MSPS Data Acquisition Module

Aiming at the problems of single channel acquisition mode of traditional oscilloscope recorder, insufficient acquisition flexibility, low acquisition frequency, transmission delay, etc., this paper proposes a design method of dual-channel signal acquisition module based on FPGA hardware platform. This design uses a high-sampling-rate ADC chip AD9268 as a dual-channel acquisition port to achieve 100MSPS sampling frequency acquisition, while simultaneously transmitting the converted digital signal through the SerDes serial port. In the FPGA implementation process, a channel conditioning module is added to adjust the gain and offset of the input data. The test results show that the system can realize synchronous sampling, processing, and transmission of the input analog signal, and the acquisition process is stable, and the collected signal has a high degree of restoration and no distortion.

Design of Heartbeat Monitoring Based on Serial Port and its Implementation in QNX

Today, with the rapid development of information technology, the stability of information systems is the guarantee for the normal operation of business systems and data security. Heartbeat monitoring technology enables high system availability and a high degree of system security at a lower cost. In order to ensure the stability of the information system, the heartbeat monitoring technology has been studied. Firstly, the principle of heartbeat monitoring technology is discussed. The basic heartbeat monitoring method is implemented between the main system and the standby system or any two connected systems through the serial port. Then the QNX is used as the technology to implement the carrier to RS-232-C. Finally, for the related modules such as heartbeat sending, heartbeat receiving and processing, the program working flow chart is presented, some examples are given, and interfaces are reserved for function expansion for reference by relevant engineering and technical personnel. In practical applications, based on the actual situation, emergency procedures and recovery procedures can be designed to improve the emergency response capability and reliability of the overall system.

FPGA-based DFT system design, optimisation and implementation using high-level synthesis

In this paper, a discrete Fourier transform (DFT) algorithm is designed and optimised for the FPGA implementation using the Xilinx VIVADO High-Level Synthesis (HLS) tool. The DFT algorithm is written by C++ programming and simulated for functional verification in the HLS and MATLAB. For hardware validation, the DFT module is packaged as an IP core and tested in a VIVADO project. A Xilinx SDK application written by C language is developed and used for testing the DFT module on a Zynq FPGA development board, ZedBoard. For visualisation of the DFT magnitude spectrum generated in FPGA, a GUI is developed by C# programming and related commands/data can be communicated between the GUI and ZedBoard over the serial port. Experimental results are presented with discussion. The DFT module design, optimisation and implementation as well as the VIVADO project development methods can be extended to other FPGA applications.

Improving Social Management Innovation Ability by Using Internet of Things Technology

In the context of the Internet of Things, the future network will be able to more effectively promote the mutual progress between personal development, social management and smart goods. On the demand of the social network model and its research background and the related information, the thesis provides a model of the relevant information from the Internet and social material base, the extraction of the business process layer, transport layer, information processing, and formulate the function of the application layer, through the social network of social relations, and positioning information for the object of the basic theory in the study of data analysis. The simulation results of the above algorithms show that although the social network architecture is not fully applicable to the social Internet of Things, by modifying the specific functions in the structure, two serial ports support 485 connection, and IG1000 can support the convergence of 100 devices. IG1000 northbound provides 100 M network and mobile wireless broadband interface, data reading speed up to 10 000 /s. Object related standards can obtain the structure of social Internet of Things, including ontology semantic web and social function, which well proves the effectiveness and efficiency of the above algorithm and lays a foundation for further research in the future.