CompactPCI/Linux Platform in FTU Slow Control System

In large fusion experiments, such as tokamak devices, there is a common trendfor slow control systems. Because of complexity of the plants, the so-called 'Standard Model' (SM)in slow control has been adopted on several tokamak machines. This model is based on a three-levelhierarchical control: 1) High-Level Control (HLC) with a supervisory function; 2) Medium-LevelControl (MLC) to interface and concentrate I/O field equipments; 3) Low-Level Control (LLC) withhard real-time I/O function, often managed by PLCs. FTU control system designed with SM concepts hasunderwent several stages of developments in its fifteen years duration of runs. The latestevolution was inevitable, due to the obsolescence of the MLC CPUs, based on VME-MOTOROLA 68030 withOS9 operating system. A large amount of C code was developed for that platform to route the dataflow from LLC, which is constituted by 24 Westinghouse Numalogic PC-700 PLCs with about 8000field-points, to HLC, based on a commercial Object-Oriented Real-Time database on Alpha/CompaqTru64platform. Therefore, we have to look for cost-effective solutions and finally a CompactPCI—Intelx86 platform with Linux operating system was chosen. A software porting has been done, taking intoaccount the differences between OS9 and Linux operating system in terms of Inter/Network ProcessesCommunications and I/O multi-ports serial driver. This paper describes the hardware/softwarearchitecture of the new MLC system, emphasizing the reliability and the low costs of the open sourcesolutions. Moreover, a huge amount of software packages available in open source environment willassure a less painful maintenance, and will open the way to further improvements of the systemitself.

Hardware Implementation of STM32 Microcontroller-Based Indoor Environment Monitoring System

Microcontroller is widely used in the intelligent life of modern society. Intelligent development based on Microcontroller to solve the actual needs of people’s life, work, study and other fields is the core of Microcontroller application. Therefore, it is a task for researchers to understand the structure and performance of microcontroller, develop software, and be familiar with the method and process of intelligent development based on microcontroller. And with that in mind, this paper designs and produces a physical hardware system for indoor environment detection based on STM32 microcontroller. The system can detect the light intensity, temperature and humidity, and CO gas concentration in the indoor environment;and the data is integrated and processed by the STM32 microcontroller to display the current parameter values of each quantity in the indoor environment on a 3.5-inch resistive screen;at the same time, the PC can also log in to the OneNET cloud platform through the web page, and display the light intensity, temperature and humidity, and CO gas concentration values in the indoor environment in real time in the device created by OneNET for real-time viewing. The system can also display the light intensity, temperature and humidity, and CO gas concentration values in the indoor environment in real time. The hardware system has been tested and tested to achieve its function.

System32与SysWOW64的问题

我们在使用Windows系统时往往会在不同的版本相互迁移,尤其是遇到32位与64位版本,有时会遇到一些问题。近期笔者就在System32与SysWOW64之间的文件问题上遇到了问题,并提出了自己的看法。

PCI Embedded Computer Systems公司CPU板

PCI Embedded Computer Systems推出面向低功耗嵌入式系统的传导冷却XMC CPU板。AMD Geode LX 800处理器系列以基于x86的嵌入式处理器提供了所需的性能和功耗适应性，工作频率为500MHz时，最大功耗3．9W，典型功耗1．8W。Geode LX处理器提供了毫无折损地设计创新产品所需的低功耗x86性能。在AMD Geode CS5536伴随器件的配合下，

On the Study of Multi-Gas Data Acquisition System Based on PCI1711 Card

A data acquisition system for testing gas sensor array response to multi-gas is presented.The testing system is based on the character of the gas response of metal oxide semiconductor gas sensor array.The data acquisition is realized automatically through the real time controlling of the data acquisition card PCI1711.This system is highly attractive for electronic nose,which is a powerful tool for the discrimination of gases.

Efficacy and safety of traditional Chinese medicine in the treatment of coronary heart disease complicated with anxiety and/or depression after PCI:A systematic review and meta-analysis

Objective:The clinical efficacy and safety of traditional Chinese medicine in the treatment of anxiety and/or depression after PCI for coronary heart disease were systematically evaluated.Methods:The databases of CNKI,Wanfang,VIP,CMB,PubMed,Web of Science,PubMed,Web of Science and Cochrane Library were searched by computer,and the Chinese and English randomized controlled trials(RCTs)of traditional Chinese medicine in the treatment of anxiety and/or depression after PCI of coronary heart disease published from the database to November 2020 were included.The Cochrane bias risk tool and the modified Jadad scale were used to evaluate the quality of the included literature,and the RevMan 5.3 and Stata 16.0 software were used for Meta-analysis.Results:A total of 23 RCTs were included,including 1837 subjects,including 917 cases in the treatment group of traditional Chinese medicine,920 cases in the control group,the baseline situation between groups was consistent,comparable.Meta-analysis results show that TCM treatment improves the total clinical effective rate[OR=2.34,95%CI(1.61,3.40),P<0.00001],and the efficacy of TCM syndrome[OR=5.19,95%CI(2.74,9.86),P<0.00001],reduce Hamilton anxiety scale HAMA score[SMD=-0.96,95%CI(-1.78,-0.14),P=0.02],Hamilton Depression Scale HAMD score[SMD=-1.10,95%CI(-1.79,-0.41),P=0.002],SAS self-rating scale score[SMD=-1.20,95%CI(-1.75,-0.65),P<0.0001],SDS self-rating scale score[SMD=-1.14,95%CI(-1.62,-0.65),P<0.00001]and other indicators are better than the control group,and the difference is statistically significant(P<0.05).Conclusion:The combination of traditional Chinese medicine intervention and conventional western medicine treatment after PCI can further improve the clinical efficacy of patients with anxiety and/or depression after PCI of coronary heart disease and has good safety.Due to the general quality of the literature included in this study,the above conclusions need to be further confirmed by high-quality randomized controlled double-blind clinical trials.

Systematic review on application effect of M-health for PCI postoperative coronary heart disease patients

Objective To systematically evaluate the application effect of M-healthfor PCI postoperative coronary heart disease patients.MethodsTrials on patients withM-healthwere screened from these databases (EMBASE, PUMBED, Cochrane Library, CNKI database, Wanfang database) from inception to March 12 in 2018.

Based on STM32 of CNN Speech Keyword Command Recognition System

Speech recognition is a hot topic in the field of artificial intelligence.Generally,speech recognition models can only run on large servers or dedicated chips.This paper presents a keyword speech recognition system based on a neural network and a conventional STM32 chip.To address the limited Flash and ROM resources on the STM32 MCU chip,the deployment of the speech recognition model is optimized to meet the requirements of keyword recognition.Firstly,the audio information obtained through sensors is subjected to MFCC(Mel Frequency Cepstral Coefficient)feature extraction,and the extracted MFCC features are input into a CNN(Convolutional Neural Network)for deep feature extraction.Then,the features are input into a fully connected layer,and finally,the speech keyword is classified and predicted.Deploying the model to the STM32F429,the prediction model achieves an accuracy of 90.58%,a decrease of less than 1%compared to the accuracy of 91.49%running on a computer,with good performance.

Develop 32 bit processor based embedded system using LabVIEW

With embedded systems rapidly growing in complexi- ty,designers are facing new challenges:with the cost of implement a 32 bit Microcontrollers(MCU)based system today being the same as that of a 16 bit solution,8 bit and 16 bit mCUs are increasing giving way to more scalable, higher performance 32 bit systems on chip(SoC)in

Thermo Tank Temperature Control System Based On STM32

This paper introduced a thermo tank temperature control system based on STM32. Firstly, the temperature acquisition is real- ized by the high-lxecision electrical bridge based on constant current source. Then the augmented PID algorithm realized by software is adopteff But-terworth filter is used to convert the o.aput PWM of STM32 to current signal which is used to control the seniconductor control rectifier to adjust the temrature. Calibration check and practical application both indicated that the system was reliable, high-precision, practicable and could meet reality needs.

Digital control system for pulsed MIG welding power based on STM32

Digital control system for pulsed MIG welding power based on STM32 is set up with 32-bit STM32FlO3ZET6 directing against the pulse waveform modulation of pulsed MIG welding. High-frequency inverter and medium-low frequency pulse waveform modulation of pulsed MIG welding are realized by using the integrated PWM module within STM32 to generate PWM signals of phase-shifted full-bridge soft-switching and constant-current control of output current is achieved by means of anti-windup PI control algorithm to improve the stability and reliability of control system. Experimental results demonstrate that the designed digital control system based on STM32 can achieve pegrect pulsed MIG welding technique with stable welding process and good weld appearance, fully demonstrating the advantages of digital control based on STM32.

Development of Welding Multi-Information Remote Wireless Monitoring System Based on STM32

A single sensor is used to obtain welding information in welding monitoring process, but this method has some shortcomings. In order to obtain more comprehensive and reliable welding information, this paper designed and built a welding multi-information wireless monitoring system with STM32-F407ZET6 as the control core and ALK8266 as the wireless transmission module. Real-time acquisition, transmission and display of electric arc signal and welding image information are realized in the monitoring system. This paper mainly introduces the hardware and software core of the monitoring system. At the same time, the signal collected by the monitoring system is compared with the original signal, and the accuracy of the remote monitoring system is tested. The monitoring system is used in welding test. The test results show that the accuracy of the monitoring system meets the requirements, and the on-line monitoring of electric arc signal and welding image can be realized in the welding process.

Design and Implementation of Image Acquisition System Based on STM32

In order to solve the difficulty of reading inconvenience in the measurement process of digital track gauge, a kind of image data acquisition system with low cost and stable performance is designed. The system uses the Cortex-M4 as the core of the STM32F407ZGT6 as the control core, the use of OV2640 as an image sensor to collect images, and the collection of image files stored in the SD card for subsequent image processing to achieve the goal of rail adjustment to lay the foundation. The experimental results show that the image acquisition is stable and refiable and the collected images are clear and meet the design requirements.

Internet of Things Based Smart Irrigation System Using ESP WROOM32

Farming has been the most prominent and fundamental activity for generations.As the population has been mul-tiplying exponentially,the demand for agricultural yield is growing relentlessly.Such high demand in production through traditional farming methodologies often falls short in terms of efficiency due to the limitations of manual labour.In the era of digitization,smart agricultural solutions have been emerging through the windows of Internet of Things and Artificial Intelligence to improve resource management,optimize the process of farming and enhance the yield of crops,hence,ensuring sustainable growth of the increasing production.By implementing modern technologies in the field of farming we can enable telemetry through which farmers can remotely monitor and gather real time data on the desired parameters.It also gives accurate and precise measurements when compared to traditional measurement techniques.This research paper focuses on an IoT based approach for smart monitoring using ESP WROOM 32 microcontroller that helps farmers identify real-time parameters of temperature,moisture and humidity of their field.Real-time data on temperature,moisture,and humidity enables farmers to make informed decisions about irrigation and crop protection.Furthermore,the use of smart monitoring ensures accurate and precise measurements,surpassing the limitations of traditional techniques.

Design and Implementation of Indoor Visible Light Positioning System Based on MiniSTM32

Aiming at the problems of LED-based visible light positioning system such as unstable illumination, Lambertian model transmission limitation, large positioning error, etc., it is proposed to use PWM to drive the LED, use the curve fitting method to obtain the ranging model, and estimate the target position according to the trilateral algorithm. A positioning system platform based on the microcontroller MiniSTM32 was built to test the performance of the transceiver circuit. The experimental results showed that the positioning error of less than 3 cm was achieved in a space of 80 cm × 80 cm × 80 cm.

Genotypic Analysis, Construction of the Expression System and Immunological Identification of the Recombinant Proteins of the LipL32 Gene in the Dominant Serogroups of Leptospira interrogans in China

To investigate the existence of the major outer membrane protein (MOMP) gene LipL32 in 15 dominant Chinese strains of 15 serogroups of Leptospira interrogans and 2 international strains of 2 serogroups of Leptospira biflexa, and to clone and construct the expression system as well as to identify the recombinant proteins, genomic DNAs from strains of leptospira were prepared by routine phenol-chloroform method, and the fragments of the LipL32 gene with the whole length from the strains were amplified with high fidelity PCR. The target amplification products were sequenced after T-A cloning, and the expression system for the genes were thereby constructed. Expression of the recombinant proteins was identified by using SDS-PAGE after induction with IPTG at different dosages. Western blot assays with rabbit antiserum against the whole cell of TR/PatocⅠ of Leptospira and immunized serum with rMOMPs were used to determine the immunoreactivity and immunogenicity of the recombinant proteins. Microscopic agglutination test was used to determine the cross- agglutination titres in rabbit sera immunized with rMOMPs, and the cell adherence model of Leptospira was used to examine the blocking effects of rabbit antisera against these rMOMPs. It was found that the LipL32 gene could be found in all the 17 strains of Leptospira mentioned above with two different genotypes, i.e. LipL32/1 and LipL32/2. Amounts of expressions of rMOMP1 and rMOMP2 after IPTG accounted for 40% and 10% of the total bacterial proteins respectively. Both rMOMP1 and rMOMP2 could combine with the rabbit antiserum against leptospiral TR/PatocⅠ, and could induce the production of agglutination antibodies to these 17 strains of Leptospira with 1∶2 to 1∶64 MAT titres. The rabbit anti-rMOMP1 and anti-MOMP2 antibodies at 1∶2 to 1∶16 dilutions could efficiently block adherence of Leptospira. It concludes that all the Leptospira tested in the present study possess LipL32/1 or LipL32/2 genes, and the constructed expression system can express the rMOMP1 and rMOMP2. These recombinant proteins are showed to have good immunogenicity and satisfactory immunoreactivity.

Design and realization of security physical isolation system

A physical isolation system based on PCI (peripheral component interconnect),embedded with intelligence card technology, strong identity authentication technology and securityaudit, etc., is introduced. The system can physically isolate the internaland external networks. Thehardware of the system, including PCI interface control circuits, network interface circuits andlogic control circuits, is designed to automatically adapt its operation speed and mode to thenetwork and securely isolate the internal and external networks; the software of the system,including the security strategy management module, the security audit module, the database recordexchanging module, the file exchanging module and the mail exchanging module, is designed toefficiently exchange and manage the data transference between the internal and external networks.Also the driver of the system is implemented with Windows driver development kits (DDK) based onNetwork Driver Interface Specification (NDIS). The prototype ofthe system developed has beenemployed in the Police Fire Protection Bureau of Hubei Province, which performs consistently andefficiently. The technological cruxes discussed have practical values for related subjects.