scholarly journals Technical realization of the device for integrated monitoring of the parameters of the microwave path

2021 ◽  
Vol 2094 (3) ◽  
pp. 032040
Author(s):  
Yu Gimpilevich ◽  
I Afonin ◽  
V Vertegel ◽  
Yu Tyschuk
Keyword(s):  
Power Level ◽  
Automatic Measurement ◽  
Coaxial Line ◽  
Automatic Monitoring ◽  
Control Device ◽  
Strip Line ◽  
Integrated Monitoring ◽  
Technical Realization ◽  
Microwave Sensor ◽  
Microwave Control

Abstract Two designs of a microwave sensor have been developed for a device for built-in monitoring of microwave path parameters, built on the basis of a broadband quadrature measurement method. The first sensor design is made on the basis of a symmetrical strip line, the second - on the basis of a segment of a coaxial line. Each of the microwave sensor designs consists of three parts: a directional coupler and two non-directional measuring probes. The microwave sensor is designed to operate in the 1 - 2 GHz frequency range. The paper also proposes a variant of the circuitry implementation of the built-in microwave control device, which implements the procedure for broadband automatic measurement of the complex reflection coefficient and the power level in the microwave path based on the method of quadrature measurements. The device solves the problem of long-term automatic monitoring of parameters and timely detection of the beginning degradation of the antenna-feeder path.

scholarly journals Automatic Shear Wave Splitting Measurements at Mt. Ruapehu Volcano, New Zealand

2021 ◽  
Author(s):  
◽  
Andreas Wessel
Keyword(s):  
New Zealand ◽  
Shear Wave ◽  
Automatic Measurement ◽  
Automatic Monitoring ◽  
Shear Wave Splitting ◽  
Measurement Tool ◽  
Data Set ◽  
The North ◽  
Wave Splitting ◽  
Ruapehu Volcano

<p>This thesis presents an automatic shear wave splitting measurement tool and the results from its application to data recorded in the vicinity of Mt. Ruapehu volcano on the North Island of New Zealand. The best methodology and parameters for routine automatic monitoring are determined and approximately 10,000 events are processed. About 50% of all S-phases lead to measurements of acceptable quality. Results obtained with this technique are reproducible and objective, but more scattered than results from manual measurements. The newly developed automatic measurement tool is used to measure shear wave splitting for previously analysed data and for new data recorded in 2003-2007. In contrast to previous studies at Mt. Ruapehu, we have a larger and continuous data set from numerous three-component seismic stations. No major temporal changes are found within the new data, but results vary for di erent station locations. I</p>

Automatic Monitoring Technology for Surface Settlement of Underwater Foundation

2013 ◽  
Vol 401-403 ◽  
pp. 992-996 ◽  
Author(s):  
Ai Min Liu ◽  
Zhi Fa Yu ◽  
Jing Shuang Li
Keyword(s):  
Data Acquisition ◽  
Automatic Measurement ◽  
Automatic Monitoring ◽  
Surface Settlement ◽  
Vibrating Wire ◽  
Automatic Data ◽  
Automatic Monitoring System ◽  
Reliable Monitoring ◽  
Battery Systems ◽  
Automatic Data Acquisition

With the construction boost of China marine projects, it is necessary to perform underwater foundation monitoring. This paper describes the modification of two types of vibrating wire instruments to achieve the automatic measurement of surface settlement of underwater foundation. Thus surface settlement of underwater foundation can be monitored by automatic data acquisition, storage and transmission with help of current sophisticated automatic data acquisition, automatic storage and battery systems. The automatic monitoring system can provide real-time and reliable monitoring data to guide the marine construction.

scholarly journals Automatic Shear Wave Splitting Measurements at Mt. Ruapehu Volcano, New Zealand

2021 ◽  
Author(s):  
◽  
Andreas Wessel
Keyword(s):  
New Zealand ◽  
Shear Wave ◽  
Automatic Measurement ◽  
Automatic Monitoring ◽  
Shear Wave Splitting ◽  
Measurement Tool ◽  
Data Set ◽  
The North ◽  
Wave Splitting ◽  
Ruapehu Volcano

<p>This thesis presents an automatic shear wave splitting measurement tool and the results from its application to data recorded in the vicinity of Mt. Ruapehu volcano on the North Island of New Zealand. The best methodology and parameters for routine automatic monitoring are determined and approximately 10,000 events are processed. About 50% of all S-phases lead to measurements of acceptable quality. Results obtained with this technique are reproducible and objective, but more scattered than results from manual measurements. The newly developed automatic measurement tool is used to measure shear wave splitting for previously analysed data and for new data recorded in 2003-2007. In contrast to previous studies at Mt. Ruapehu, we have a larger and continuous data set from numerous three-component seismic stations. No major temporal changes are found within the new data, but results vary for di erent station locations. I</p>

scholarly journals Research and Application of Automatic Measurement of Resistance Value Based on a Thermal Control Device

2021 ◽  
Vol 2121 (1) ◽  
pp. 012022
Author(s):  
Tao Feng ◽  
Lei Huang ◽  
Mingyu Guo ◽  
Zhen Xu ◽  
Guanghui Fu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Automatic Measurement ◽  
Thermal Control ◽  
Control Device ◽  
Circuit Board ◽  
Resistance Measurement ◽  
Interface Circuit ◽  
Measurement Function ◽  
Machine Interface ◽  
Resistance Value

Abstract The resistance measurement system of thermal control device is mainly composed of four parts: fixture, interface circuit board, switches module and data acquisition system. The main contents of the system design are as follows: To make the system realize the automatic resistance measurement function of thermocouple, heating belt and heating plate, and improves the measurement speed and robustness of the software; To achieve the friendliness of human-machine interface; At room temperature, it can collect 40 output voltage signals of thermocouple, and judge whether the temperature collection of thermocouple is accurate or not.

scholarly journals Integral monitoring of high-rise buildings while minimizing the number of sensors

2020 ◽  
Vol 18 (4) ◽  
pp. 649-664
Author(s):  
Tolmacheva Mixajlovna ◽  
Plotnikov Nikolaevich ◽  
Ivanov Yurievich ◽  
Amelin Yurievich
Keyword(s):  
Big Data ◽  
Critical Points ◽  
Dynamic Stiffness ◽  
Vertical Axis ◽  
Automatic Monitoring ◽  
Cross Wall ◽  
Control Points ◽  
Monitoring Methods ◽  
Integrated Monitoring ◽  
High Rise

Considered current issues of automatic monitoring of high-rise buildings. A review of currently implemented monitoring methods is given. An analytical study of the effect of the ratio of the rigidity of the vertical and horizontal structural elements of buildings of various structural systems on the deformation of the vertical axis of the building was performed. The basis of the research is the solution of the differential equation of the elastic vertical axis of the building. By finding the extrema of the deformation function of the vertical axis, critical points of control of its angles of rotation are determined. As a result of the study, it was concluded that it is advisable to minimize the number of control points, with limited control at certain critical points. The position of the control points dividing the vertical axis of the building through ¼ of its length at the corners of the perimeter of the floors has been determined. It is shown that minimization is necessary due to difficulties in processing and analyzing big data (Big Data). As a result of the traditional manual calculation with the accepted design methods, it was found that the box-barrel structural system has the greatest deformations, the frame-link frame with the stiffness core has the smallest deformations, and outriggers do not always allow to radically increase the building stiffness. Studies were conducted on computer models of the same types of buildings, which confirmed this dependence. However, here the maximum rigidity was shown by the cross-wall model. This testifies to the features of modeling buildings in various ways and confirms once again the need to monitor not only high-rise buildings, but all non-standard ones. It is concluded that it is necessary to accumulate data on the deformations of buildings using automatic monitoring methods. It is shown that information on the technical condition of the building is complemented by information on the longitudinal deformations of vertical structures - columns, stiffness cores, measured by tensiometers on concrete, as well as dynamic stiffness, determined by the natural oscillation frequency of accelerometers. The principle of sensor grouping and the need to use integrated, integrated monitoring are shown.

scholarly journals Measuring the Quality of Water using Ph Sensor and Filling Automatically Into Bottles

2019 ◽  
Vol 8 (4) ◽  
pp. 8865-8869
Keyword(s):  
Water Quality ◽  
Power Unit ◽  
Ph Sensor ◽  
Automatic Monitoring ◽  
Control Device ◽  
Quality Level ◽  
Quality Of Water ◽  
Sensor Module ◽  
Set Up ◽  
The Right

Automatic monitoring and regulation of the water quality allows for the design of the process. This technology uses the engine-based water motor ON / OFF remotely. This indicates the pH sensor and when it is at the water quality level is neutral than water pump is automatically filling the water; the pump is gradually triggered to refill the Bottle. Whenever the Bottle is filled to its maximum potential, the pump is contra-energized gradually. Many circuits were fitted together to ensure the right operation of this design and the diagram involves the power unit, the Arduino (micro-controller unit), the sensor system, the monitor unit and the motor drive device. The power unit is responsible for switching on the whole circuit. Some components are used to set up and include a power unit; a 12v step down transformer, a smoothing capacitor and an IC voltage regulator. The microcontroller (ATmega328) controls absolutely all of the actions carried out in this functionality. The sensor module is for detecting the water quality as well as transferring the Present position of the water to the microcontroller or Arduino. The Control device in the circuit is used to actually fire.

scholarly journals ANALOG PHASE SHIFTERS OF THE DECIMETER RANGE FOR INCREASED POWER LEVEL

2020 ◽  
Vol 8 (2) ◽  
pp. 89-93
Author(s):  
Konstantin Ya. Aubakirov ◽  
Alexander V. Makeev
Keyword(s):  
Phase Shifter ◽  
Bandpass Filter ◽  
Power Level ◽  
Control Device ◽  
Phase Shifters ◽  
High Frequency Power ◽  
Relative Bandwidth ◽  
Frequency Independent ◽  
Decimeter Range ◽  
Frequency Power

The results of designing a phase control device in the decimeter wavelength range in the form of a tunable bandpass filter are presented. Tuning such a filter by 1/2 of the relative bandwidth, not exceeding 40 - 50%, provides a frequency-independent controlled phase shift. The minimization of parasitic amplitude modulation, along with an increase in the high-frequency power transmitted by the phase shifter, is achieved by optimizing the switching factor of the varicap into the quasi-polynomial bandpass filter circuit.

scholarly journals Multicriteria assessment of optimal forecasting models in decision support systems to ensure the navigation safety

2021 ◽  
Vol 2061 (1) ◽  
pp. 012108
Author(s):  
VV Astrein ◽  
SI Kondratyev ◽  
AL Boran-Keshishyan
Keyword(s):  
Decision Support ◽  
Control Systems ◽  
Automatic Monitoring ◽  
Technical State ◽  
Statistical Control ◽  
Integrated Monitoring ◽  
On Line ◽  
Scope Of Application ◽  
Monitoring And Diagnostics ◽  
Correlated Parameters

Abstract When developing the Decision Support System (DSS), the operability of the internal motion and maneuvering control systems of the vessel is characterized by a large number of parameters, which should be monitored in order to achieve the expected results. The task is to develop an appropriate methodology for automatic monitoring of these systems, which, using a minimum set of sensors, makes it possible to predict the state of the vessel and change the dangerous state to the safe one. To implement the method of automatic monitoring, a set of statistical control tools is selected depending on the alleged violations and the level of correlation of parameters. The uncorrelated parameters are monitored by instruments based on the Shewhart map [1], the correlated parameters are monitored on the basis of Hotelling statistics [2]. This approach makes it possible to diagnose the pre-emergency and emergency states of ship control systems in on-line mode. The method used for multi-level integrated monitoring of the technical state of control systems in on-line mode can improve the reliability of of identification of the technical state of vessel subsystems and expandthe scope of application of monitoring and diagnostics tools. The data obtained can become the basis for the development of rational decisions in the DSS at the level of control subsystems for the vessel transfer from the dangerous to safe state.

scholarly journals Quadrature method for broadband measurement of microwave path parameters

2021 ◽  
Vol 2094 (3) ◽  
pp. 032046
Author(s):  
Yu Gimpilevich ◽  
Yu Tyschuk
Keyword(s):  
Reflection Coefficient ◽  
Block Diagram ◽  
Power Level ◽  
Automatic Measurement ◽  
Measurement Procedure ◽  
System Of Nonlinear Equations ◽  
Complex Reflection Coefficient ◽  
Complex Reflection ◽  
Channel Parameters ◽  
Analytical Expressions

Abstract A mathematical model has been developed for the procedure for broadband automatic measurement of the complex reflection coefficient and power level in the microwave path based on the quadrature measurement method. Analytical expressions are obtained for the quadrature components at the outputs of a quadrature demodulator connected with a switch to two non-directional measuring probes for the case of an unmatched microwave path. A modified system of nonlinear equations with respect to measured values was formed and solved, which allows setting zero assumptions. A block diagram of a broadband device for built-in automatic control of microwave channel parameters has been developed, which implements the developed measurement procedure and the solution of a system of measurement equations to determine the current values of the power level factor, as well as the modulus and argument of the complex reflection coefficient.

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