Objective: to study the calibration period of the main motor pulmonary function instrument sensor. Methods: A matched control group was used, one was calibrated periodically and the other was not calibrated. The calibration values of oxygen sensor and carbondioxide sensor were compared. Results: the oxygen sensor of electrochemical type was most sensitive to the change of time and environment, and the carbon dioxide sensor of infrared type was more sensitive to the change of time and environment. Conclusion: oxygen sensors of electrochemical type and carbon dioxide sensors of infrared type should be calibrated before each use.
{"title":"Study on calibration period of Gas Sensor in exercise Pulmonary Function instrument","authors":"Jingxia Sun, Aimin Zhang, Guoqiang Gong, Jian Jiang","doi":"10.26549/met.v2i3.1133","DOIUrl":"https://doi.org/10.26549/met.v2i3.1133","url":null,"abstract":"Objective: to study the calibration period of the main motor pulmonary function instrument sensor. Methods: A matched control group was used, one was calibrated periodically and the other was not calibrated. The calibration values of oxygen sensor and carbondioxide sensor were compared. Results: the oxygen sensor of electrochemical type was most sensitive to the change of time and environment, and the carbon dioxide sensor of infrared type was more sensitive to the change of time and environment. Conclusion: oxygen sensors of electrochemical type and carbon dioxide sensors of infrared type should be calibrated before each use.","PeriodicalId":66865,"journal":{"name":"现代电子技术(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48309892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Through one-step simple polyol-assisted (ethylene glycol) process, V2O5 hollow micro-spheres about 3 micrometres in size were successfully synthesized. The structure is neat, the outer wall were porous. Testing its electrochemical properties with V2O5 hollowmaterials as cathode materia of lithium ion battery, the results showed that under the ratio of 1 C, the initial charge and discharge specifc capacity were 236.8 mAh g-1, 213 mAh g-1, even if after 100 cycles, the charge and discharge specifc capacity were still 220 mAh g-1 and 219.7 mAh g-1 respectively. Relative to the charge and discharge capacity of the second cycle, the keep rate were 93.2%, 92.9% respectively, has good cycle stability.
{"title":"Preparation of V2O5 Porous Hollow Spheres and Study on excellent cycling Stability of lithium Battery","authors":"Shimeng Zhang, Hongye Guan, Dapeng Li, Gengxin Zhang, Rui Yang, Liang Zhao, Haibin Sun, Zhicheng Lu, Jiacai Wen, Yujuan Dong","doi":"10.26549/MET.V2I3.1136","DOIUrl":"https://doi.org/10.26549/MET.V2I3.1136","url":null,"abstract":"Through one-step simple polyol-assisted (ethylene glycol) process, V2O5 hollow micro-spheres about 3 micrometres in size were successfully synthesized. The structure is neat, the outer wall were porous. Testing its electrochemical properties with V2O5 hollowmaterials as cathode materia of lithium ion battery, the results showed that under the ratio of 1 C, the initial charge and discharge specifc capacity were 236.8 mAh g-1, 213 mAh g-1, even if after 100 cycles, the charge and discharge specifc capacity were still 220 mAh g-1 and 219.7 mAh g-1 respectively. Relative to the charge and discharge capacity of the second cycle, the keep rate were 93.2%, 92.9% respectively, has good cycle stability.","PeriodicalId":66865,"journal":{"name":"现代电子技术(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48213469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract：On the basis of the basic principles of weighted fusion, Kalman filtering and BP neural networks, the basic principles of information fusion methods used in integrated navigation systems are expounded. Through the analysis of the basic principles, the association of information fusion methods commonly used in integrated navigation systems and information failure modes is obtained: the information fault mode of weighted fusion method The model is closely related to the specific weight allocation method, which depends on the fault mode of the sensor or sub-system in which the weight is dominant; the information fault mode of the Kalman filtering information fusion method is a continuous mutation fault corresponding to the nonlinear time interval of the system; the information fault mode of the BP neural network method is gradual with time. The information failure mode of the BP neural network method is a slowly varying fault that gradually accumulates over time. Starting from the complexity associated with the information fusion method and the information failure mode, it is pointed out that in order to systematically express the relationship between the information fusion method and the information failure mode, further research can be carried out.
{"title":"Research on the Relationship between Information Fusion Method and Information Failure Mode in Integrated Navigation System","authors":"B. Han, B. Hu","doi":"10.26549/MET.V2I2.853","DOIUrl":"https://doi.org/10.26549/MET.V2I2.853","url":null,"abstract":"Abstract：On the basis of the basic principles of weighted fusion, Kalman filtering and BP neural networks, the basic principles of information fusion methods used in integrated navigation systems are expounded. Through the analysis of the basic principles, the association of information fusion methods commonly used in integrated navigation systems and information failure modes is obtained: the information fault mode of weighted fusion method The model is closely related to the specific weight allocation method, which depends on the fault mode of the sensor or sub-system in which the weight is dominant; the information fault mode of the Kalman filtering information fusion method is a continuous mutation fault corresponding to the nonlinear time interval of the system; the information fault mode of the BP neural network method is gradual with time. The information failure mode of the BP neural network method is a slowly varying fault that gradually accumulates over time. Starting from the complexity associated with the information fusion method and the information failure mode, it is pointed out that in order to systematically express the relationship between the information fusion method and the information failure mode, further research can be carried out.","PeriodicalId":66865,"journal":{"name":"现代电子技术(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49657326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. N. Musaeva, E. Kerimov, N. F. Kazımov, S. Huseynova
Abstrat: Photoelectric measurements are used to obtain additional information on the transportation mechanism of Schottky barrier structures.The main purpose of the study is to investigate the photoelectric properties of Shottky diodes based on PtSi - n - Si and PtSi - p - Si contacts.
{"title":"Platinum Silicide-Silicon Schottky Diode Characteristics","authors":"S. N. Musaeva, E. Kerimov, N. F. Kazımov, S. Huseynova","doi":"10.26549/MET.V2I2.850","DOIUrl":"https://doi.org/10.26549/MET.V2I2.850","url":null,"abstract":"Abstrat: Photoelectric measurements are used to obtain additional information on the transportation mechanism of Schottky barrier structures.The main purpose of the study is to investigate the photoelectric properties of Shottky diodes based on PtSi - n - Si and PtSi - p - Si contacts.","PeriodicalId":66865,"journal":{"name":"现代电子技术(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42615632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Barium doped hafnium oxide nanoparticles were synthesized by an easy co-precipitation method. FTIR analysis and EDX investigation shows the purity and stoichiometric composition of hafnium oxide nanoparticles. XRD investigation exhibit the as synthesized nanoparticles are amorphous in nature and calcined barium doped hafnium oxide nanoparticles have the monoclinic phase structure with the mean crystallite size was around 15 nm. TEM analysis shows the development of crystalline Nano-rods. The Nano-rod formations signify the possibility of its use in applications of sensor. Ultra violet visible spectroscopy investigation shows that the band gap of the nanoparticles is noticed between 5.4 -5.14 eV. The visible and NIR of barium doped hafnium oxide nanoparticles indicated high reflectance, which may possibly be employ as an antireflection coating in solar cells applications and high absorbance ultra violet region signify the viability of make use of the prepared nanoparticles could be used in Opto-electronic device applications.
{"title":"Investigation of the Impact of Calcinations Temperature on the Properties of Ba Doped HfO2 Nano-rods","authors":"J. Manikantan, H. Ramalingam, B. Shekar","doi":"10.26549/MET.V2I2.849","DOIUrl":"https://doi.org/10.26549/MET.V2I2.849","url":null,"abstract":"Barium doped hafnium oxide nanoparticles were synthesized by an easy co-precipitation method. FTIR analysis and EDX investigation shows the purity and stoichiometric composition of hafnium oxide nanoparticles. XRD investigation exhibit the as synthesized nanoparticles are amorphous in nature and calcined barium doped hafnium oxide nanoparticles have the monoclinic phase structure with the mean crystallite size was around 15 nm. TEM analysis shows the development of crystalline Nano-rods. The Nano-rod formations signify the possibility of its use in applications of sensor. Ultra violet visible spectroscopy investigation shows that the band gap of the nanoparticles is noticed between 5.4 -5.14 eV. The visible and NIR of barium doped hafnium oxide nanoparticles indicated high reflectance, which may possibly be employ as an antireflection coating in solar cells applications and high absorbance ultra violet region signify the viability of make use of the prepared nanoparticles could be used in Opto-electronic device applications.","PeriodicalId":66865,"journal":{"name":"现代电子技术(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42053266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract: This paper discusses the chief techniques and design principles of an embedded digital storage oscilloscope based on PXA 270, using FPGA as logic controller cell. The data acquisition partition consists of pre-process circuit, A/D converter, on-board memories, and control circuit integrated in FPGA. In the PB and EVC development environment, developers realized the part of embedded software. Actual test showed that the highest real-time sampling rate of the oscilloscope is up to 1GHz/s, which has achieved the desired design requirements.
{"title":"Research and Development on an Embedded Digital Storage Oscilloscope Based on PXA 270","authors":"Pengyun Zhang, Guo Feng, Zhiqiang He","doi":"10.26549/met.v2i2.851","DOIUrl":"https://doi.org/10.26549/met.v2i2.851","url":null,"abstract":"Abstract: This paper discusses the chief techniques and design principles of an embedded digital storage oscilloscope based on PXA 270, using FPGA as logic controller cell. The data acquisition partition consists of pre-process circuit, A/D converter, on-board memories, and control circuit integrated in FPGA. In the PB and EVC development environment, developers realized the part of embedded software. Actual test showed that the highest real-time sampling rate of the oscilloscope is up to 1GHz/s, which has achieved the desired design requirements.","PeriodicalId":66865,"journal":{"name":"现代电子技术(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46840973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract: Nonlinear dynamic analysis of rotating machinery system has always been the hot spot of the rotational dynamics research. This article sets up a rotating machinery condition monitoring system to realize the measurement of system dynamic characteristic parameters based on NI(National Instruments) virtual instruments technology. The measurement of vibration signal of rotating machinery system is achieved by using NI company general data acquisition module of NI Company. Meanwhile, by analyzing and processing the acquired data using LabVIEW 2012, the dynamic characteristics, such as .the speed of the rotating machinery system, the axis trajectory, spectrum parameters, are attained. The measurement results show that the rotating machinery condition monitoring system based on LabVIEW is easy to operate, easy to realize the function extension and maintenance, and that it can be used in the industrial engineering projects with rotation characteristics. LabVIEW as the development tools used by virtual instrument function is very powerful data acquisition software products support is one of the features of it, so using LabVIEW programming and data acquisition is simple and convenient.
{"title":"Design and Realization of Rotating Machinery Conditions Monitoring System Based on LabVIEW","authors":"Q. Fan","doi":"10.1109/MECS.2015.14","DOIUrl":"https://doi.org/10.1109/MECS.2015.14","url":null,"abstract":"Abstract: Nonlinear dynamic analysis of rotating machinery system has always been the hot spot of the rotational dynamics research. This article sets up a rotating machinery condition monitoring system to realize the measurement of system dynamic characteristic parameters based on NI(National Instruments) virtual instruments technology. The measurement of vibration signal of rotating machinery system is achieved by using NI company general data acquisition module of NI Company. Meanwhile, by analyzing and processing the acquired data using LabVIEW 2012, the dynamic characteristics, such as .the speed of the rotating machinery system, the axis trajectory, spectrum parameters, are attained. The measurement results show that the rotating machinery condition monitoring system based on LabVIEW is easy to operate, easy to realize the function extension and maintenance, and that it can be used in the industrial engineering projects with rotation characteristics. LabVIEW as the development tools used by virtual instrument function is very powerful data acquisition software products support is one of the features of it, so using LabVIEW programming and data acquisition is simple and convenient.","PeriodicalId":66865,"journal":{"name":"现代电子技术(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"62470800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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