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ISSUES OF OPTIMAL SOIL MOISTURE CONTROL BASED ON DUAL-BAND SENSORS 基于双波段传感器的土壤水分优化控制问题
Kontrol'. Diagnostika Pub Date : 2022-10-01 DOI: 10.14489/td.2022.10.pp.018-023
G. R. Babaeva
{"title":"ISSUES OF OPTIMAL SOIL MOISTURE CONTROL BASED ON DUAL-BAND SENSORS","authors":"G. R. Babaeva","doi":"10.14489/td.2022.10.pp.018-023","DOIUrl":"https://doi.org/10.14489/td.2022.10.pp.018-023","url":null,"abstract":"The water content in the soil is spatially heterogeneous, which depends on climatic factors, land use, topography and properties of the soil itself. Currently, radio frequency soil moisture meters are the most common. The technical documentation of these devices indicates that the measurement error in them can reach 1 %. However, as the results of known experimental measurements show, such a result is achieved only after calibration with respect to a specific type of soil. Calculations show that in the absence of such calibration, the error can grow up to 15 %. In this regard, spectral methods of measuring soil moisture are more advantageous. The wellknown results of the conducted studies show that in this method the main interfering factor is the content of organic substances in the soil and taking into account only the phosphorus content in the soil makes it possible to achieve a measurement error of 6.5 %. This circumstance emphasizes the prospects of exploring additional ways to increase the efficiency of spectral methods for measuring the moisture content in the soil. The question of the optimal construction of a soil moisture monitoring network based on contact dualband optical soil moisture sensors operating in the NIR and SWIR ranges is formulated and solved. It is shown that the use of the usual averaging of the measurement results obtained on two ranges of the sensor when measuring with a constant frequency can lead to an inaccurate result due to differences in the dynamic ranges of optical signals at the detector inputs caused by the non-identity of the humidification conditions of the sub-field. The possibility of choosing an adaptive measurement mode is shown when sub-stages with a large dynamic range of humidity changes should be measured with a higher frequency, proportional to the specified dynamic range, which is equivalent to the implementation of an adaptive measurement mode.","PeriodicalId":432853,"journal":{"name":"Kontrol'. Diagnostika","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114942305","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}
引用次数: 0
APPLICATION OF PHOTOIONIZATION DETECTION FOR SORTING METALS 光离检测在金属分选中的应用
Kontrol'. Diagnostika Pub Date : 2022-10-01 DOI: 10.14489/td.2022.10.pp.048-051
N. I. Ivanova
{"title":"APPLICATION OF PHOTOIONIZATION DETECTION FOR SORTING METALS","authors":"N. I. Ivanova","doi":"10.14489/td.2022.10.pp.048-051","DOIUrl":"https://doi.org/10.14489/td.2022.10.pp.048-051","url":null,"abstract":"A new type of photoionization detectors of gases and vapors is described, in which the collection of ions occurs under the action of a contact potential difference arising between two electrodes made of different metals. The design of this detector, the principle of operation and its operation are described. The results of the development of a device for sorting metals and alloys based on a photoionization generator detector are also presented. The scheme of the experimental setup for testing the proposed device is given. The elements of the device are described in detail. The possibility of using a photoionization generator detector in the device under development has been experimentally confirmed.","PeriodicalId":432853,"journal":{"name":"Kontrol'. Diagnostika","volume":"1129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125001160","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}
引用次数: 0
ENCIRCLING EDDY CURRENT TESTING PROBES FOR NON-DESTRUCTIVE TESTING OF CLOSED LINEARLY EXTENDED OBJECTS 闭合线性扩展物体无损检测用环形涡流检测探头
Kontrol'. Diagnostika Pub Date : 2022-10-01 DOI: 10.14489/td.2022.10.pp.004-011
A. Semenov
{"title":"ENCIRCLING EDDY CURRENT TESTING PROBES FOR NON-DESTRUCTIVE TESTING OF CLOSED LINEARLY EXTENDED OBJECTS","authors":"A. Semenov","doi":"10.14489/td.2022.10.pp.004-011","DOIUrl":"https://doi.org/10.14489/td.2022.10.pp.004-011","url":null,"abstract":"In this article, using the example of multi-strand rope inspection, encircling eddy current testing (ECT) probes for non-destructive testing of closed linearly extended objects, for example, stay cables, ropeways or pipelines, are considered. These ECT probes can be divided into parts in the azimuthal direction, which increases the technological effectiveness of the control. The possibility of dividing the ECT probes into parts is provided by using of saddle-shaped measuring coils, saddle-shaped excitation coils or excitation coils of different radii. In addition, the considered ECT probes allow to increase the signal-to-noise ratio.","PeriodicalId":432853,"journal":{"name":"Kontrol'. Diagnostika","volume":"52 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120920146","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}
引用次数: 0
NOMENCLATURE OF QUALITY INDICATORS OF PERSONAL PROTECTIVE EQUIPMENT AGAINST FALLS FROM HEIGHT 防高空坠落个人防护装备质量指标的术语
Kontrol'. Diagnostika Pub Date : 2022-10-01 DOI: 10.14489/td.2022.10.pp.034-039
E. P. Kondratyeva, V. Ivanova
{"title":"NOMENCLATURE OF QUALITY INDICATORS OF PERSONAL PROTECTIVE EQUIPMENT AGAINST FALLS FROM HEIGHT","authors":"E. P. Kondratyeva, V. Ivanova","doi":"10.14489/td.2022.10.pp.034-039","DOIUrl":"https://doi.org/10.14489/td.2022.10.pp.034-039","url":null,"abstract":"The normative-methodological base doesn't provide the nomenclature of quality indexes of personal fall protection means from height which forms the selection of necessary characteristics set to provide the competitiveness of products on the market. The choice of the nomenclature of indicators is formed on the basis of the table of applicability of quality indicators, presented to the means of personal protection from falling from height. The table of applicability of quality indicators identified group quality indicators such as: purpose, reliability, manufacturability, unification, ergonomic, safety, environmental and economic. The group quality indicators include indicators formed on the basis of quality requirements and safety requirements. The normative-methodological basis with methods of quality indicators control is presented.","PeriodicalId":432853,"journal":{"name":"Kontrol'. Diagnostika","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127328071","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}
引用次数: 0
METHODS FOR CONVERSING OUTPUT SIGNALS OF KEY PHASE DETECTORS 关键鉴相器输出信号的转换方法
Kontrol'. Diagnostika Pub Date : 2022-10-01 DOI: 10.14489/td.2022.10.pp.012-017
L. Grigoryan, N. Bogatov, R. Grigoryan
{"title":"METHODS FOR CONVERSING OUTPUT SIGNALS OF KEY PHASE DETECTORS","authors":"L. Grigoryan, N. Bogatov, R. Grigoryan","doi":"10.14489/td.2022.10.pp.012-017","DOIUrl":"https://doi.org/10.14489/td.2022.10.pp.012-017","url":null,"abstract":"The comparative analysis of switching methods of transformation of phase information is carried out in work. Following the proposed classification, the advantages, disadvantages, and scope of the methods of low-frequency filtering and high-purity sampling of the output pulses of a switching phase converter are shown. Particular attention is paid to analyzing a fundamentally new time-pulse method of current linearization, which is especially effective in measuring phase shifts at an intermediate frequency in phase meters with frequency conversion of the studied signals.","PeriodicalId":432853,"journal":{"name":"Kontrol'. Diagnostika","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128414457","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}
引用次数: 0
INCREASING THE RELIABILITY OF THE LOW STRAIN INTEGRITY TESTING OF PILES UNDER EXISTING STRUCTURES 提高既有结构下桩基低应变完整性测试的可靠性
Kontrol'. Diagnostika Pub Date : 2022-10-01 DOI: 10.14489/td.2022.10.pp.024-032
A. Churkin, E. Loseva, I. Lozovsky, V. Syasko
{"title":"INCREASING THE RELIABILITY OF THE LOW STRAIN INTEGRITY TESTING OF PILES UNDER EXISTING STRUCTURES","authors":"A. Churkin, E. Loseva, I. Lozovsky, V. Syasko","doi":"10.14489/td.2022.10.pp.024-032","DOIUrl":"https://doi.org/10.14489/td.2022.10.pp.024-032","url":null,"abstract":"Inspection of piles located under the pile cap or an existing building is a common task in the practice of capital construction. The low strain impact testing allows us to estimate the pile length and the presence of defects in its body. This provides designers and builders with information on structures, which can be considered when planning the further operation of the foundation. Improving the reliability of test results for examining piles under cap is the issue of interest. On the example of field test results, the application of the multifrequency signal excitation during data collection and the wavelet analysis of signals during data processing are shown.","PeriodicalId":432853,"journal":{"name":"Kontrol'. Diagnostika","volume":"242 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114634319","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}
引用次数: 1
THE RESULTS OF THE STUDY OF CHANGES IN THE COLOR CHARACTERISTICS OF POLYMERS UNDER THERMAL EXPOSURE 研究了聚合物在热曝光下颜色特性的变化
Kontrol'. Diagnostika Pub Date : 2022-10-01 DOI: 10.14489/td.2022.10.pp.040-047
A. Gorbunov, M. V. Elfimova, Y. Bezborodov
{"title":"THE RESULTS OF THE STUDY OF CHANGES IN THE COLOR CHARACTERISTICS OF POLYMERS UNDER THERMAL EXPOSURE","authors":"A. Gorbunov, M. V. Elfimova, Y. Bezborodov","doi":"10.14489/td.2022.10.pp.040-047","DOIUrl":"https://doi.org/10.14489/td.2022.10.pp.040-047","url":null,"abstract":"The article presents the results of studies of polymer samples (PVC) under thermal exposure in a muffle furnace, by measuring color characteristics using a model of color decomposition into RGB components. Under thermal action, chemical and physical changes occur in polymers. The degree of thermal damage depends on the time and temperature of exposure [1]. The aim of the work was to establish the dependence of color characteristics in the RGB system on the temperature and time of exposure to PVC samples. A criterion for controlling the degree of thermal damage and a device for implementing the method are proposed. The device is based on the TCS3472 color sensor and a programmable logic controller. The data obtained can be used in the investigation of fires at objects with polymer finishes when detecting fire propagation paths, as well as monitoring the degree of thermal damage to polymers during various technological processes.","PeriodicalId":432853,"journal":{"name":"Kontrol'. Diagnostika","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130539004","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}
引用次数: 0
INCREASING THE SIGNAL-TO-NOISE RATIO IN EDDY CURRENT NDT BY CREATING OF AN INHOMOGENEOUS ELECTROMAGNETIC FIELD 通过产生非均匀电磁场提高涡流无损检测的信噪比
Kontrol'. Diagnostika Pub Date : 2022-09-01 DOI: 10.14489/td.2022.09.pp.004-013
A. Semenov
{"title":"INCREASING THE SIGNAL-TO-NOISE RATIO IN EDDY CURRENT NDT BY CREATING OF AN INHOMOGENEOUS ELECTROMAGNETIC FIELD","authors":"A. Semenov","doi":"10.14489/td.2022.09.pp.004-013","DOIUrl":"https://doi.org/10.14489/td.2022.09.pp.004-013","url":null,"abstract":"In this article, using the example of multistrand rope inspection, the ways of increasing the signal-to-noise ratio in eddy current control are considered. Based on the results of numerical simulation, a comparative analysis of encircling addycurrent probes with different lengths of the exciting coil is carried out. A probe with a narrow exciting coil has a pronounced dependence of the ratio of signals from defects in different layers on the position of the measuring coils. The use of measuring coils located at different distances from the center of the exciting coil makes it possible to increase the signal-to-noise ratio due to the separation in the radial direction of the parts of the object that mainly form signals and noise in different measuring coils. The use of a system of surface measuring coils instead of encircling measuring coils makes it possible to increase the signal-to-noise ratio due to the separation in the azimuthal direction of the parts of the object that mainly form signals and noise in each of the surface measuring coils.","PeriodicalId":432853,"journal":{"name":"Kontrol'. Diagnostika","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134195765","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}
引用次数: 2
ABOUT THE DISSERTATION COUNCIL AT THE RESEARCH INSTITUTE OF INTROSCOPY 关于内窥镜研究所的论文委员会
Kontrol'. Diagnostika Pub Date : 2022-09-01 DOI: 10.14489/td.2022.09.pp.058-066
V. V. Klyuev, V. Bobrov, D. Galkin, A. Efimov, A. Shubochkin
{"title":"ABOUT THE DISSERTATION COUNCIL AT THE RESEARCH INSTITUTE OF INTROSCOPY","authors":"V. V. Klyuev, V. Bobrov, D. Galkin, A. Efimov, A. Shubochkin","doi":"10.14489/td.2022.09.pp.058-066","DOIUrl":"https://doi.org/10.14489/td.2022.09.pp.058-066","url":null,"abstract":"The article describes the activities of the dissertation Council, formed on the basis of the research institute of introscopyin 1975, provides information on the results of the Council's work and the directions in which the defenses were performed in the period from 2000 to 2022. In conclusion, the prospects for the transformation of the Council in connection with the introduction of a new nomenclature of scientific specialties are considered.","PeriodicalId":432853,"journal":{"name":"Kontrol'. Diagnostika","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126170783","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}
引用次数: 0
ON THE INFLUENCE OF THE PARAMETERS OF THE ELECTRIC EXCITATION PULSE OF A PIEZOELECTRIC PLATE OF A NORMAL PROBE ON THE CHARACTERISTICS OF THE FREQUENCY SPECTRUM AND PULSE OF THE RECORDED ECHO SIGNAL 研究了普通探头压电片的电激励脉冲参数对记录回波信号频谱和脉冲特性的影响
Kontrol'. Diagnostika Pub Date : 2022-09-01 DOI: 10.14489/td.2022.09.pp.014-022
V. Danilov
{"title":"ON THE INFLUENCE OF THE PARAMETERS OF THE ELECTRIC EXCITATION PULSE OF A PIEZOELECTRIC PLATE OF A NORMAL PROBE ON THE CHARACTERISTICS OF THE FREQUENCY SPECTRUM AND PULSE OF THE RECORDED ECHO SIGNAL","authors":"V. Danilov","doi":"10.14489/td.2022.09.pp.014-022","DOIUrl":"https://doi.org/10.14489/td.2022.09.pp.014-022","url":null,"abstract":"On the basis of computer modeling of the electro acoustic channel of a normal probe for a reflector in the form of a bottom surface, the influence of some typical forms and corresponding frequency spectra of the electric pulse of excitation of the piezoelectric plate on the characteristics of the frequency spectrum and pulse of the recorded echo signal is considered. Calculations of signals using an exciting pulse in the form of a voltage jump (step), in the form of half a sine wave and a rectangular shape have shown the feasibility of using rectangular pulses with a duration equal to half of the oscillation period at the nominal frequency of the probe. The maximum of the pulse envelope of the recorded bottom echo for the excitation pulse of a rectangular shape piezoelectric plate is approximately twice as high as the maximum of the envelope when the piezoelectric plate is excited by a pulse in the form of a jump and a quarter more than the maximum when excited by a semi sinusoidal pulse for the nominal frequencies of the probes 2.5 and 5.0 MHz.","PeriodicalId":432853,"journal":{"name":"Kontrol'. Diagnostika","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115373698","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}
引用次数: 1
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