Ultrasonics. Real-time pulse-echo systems. Guide for test procedures to determine performance specifications

1997 ◽  
Keyword(s):  
Real Time ◽  
Test Procedures ◽  
Performance Specifications ◽  
Pulse Echo ◽  
Time Pulse

Safety audit of rail transport in open pit mines

2020 ◽  
pp. 602-613
Author(s):  
Yu. A. Bakhturin
Keyword(s):  
Industrial Safety ◽  
Open Pit ◽  
Rail Transportation ◽  
Test Procedures ◽  
Open Pit Mines ◽  
Actual Performance ◽  
Braking Performance ◽  
Safety Requirements ◽  
Performance Specifications ◽  
Hazardous Production

In order that the industrial safety audit at hazardous operation objects becomes a source of reliable information, it is required to develop the appropriate regulations and procedures. Inasmuch as Rostekhnadzor has aimed to cancel obligatory expertise of industrial safety, the function of the approval testing, at least to a certain degree, can be given to auditing. This article discusses two auditing scenarios: in case of systematic safety expertise at hazardous production objects and in case of no such expertise undertaken. A procedure is proposed, which allows control over conformance of actual performance specifications of rail transportation stock at an open pit mine to the industrial safety requirements in the frameworks of the safety audit. The procedure includes sampling braking tests, or the comparison of the actual braking performance indices of trains in the most hazardous sections of track with the braking parameters from the dynamic calculations. The method developed at the Institute of Mining, Ural Branch RAS enables taking into account the specific type of braking equipment, is based on the actual physical values and features higher accuracy. The case-studies of the braking test procedures and modeling are given.

scholarly journals Pulse Wave Analysis to Estimate Cardiac Output

2020 ◽  
Vol 134 (1) ◽  
pp. 119-126 ◽  
Author(s):  
Karim Kouz ◽  
Thomas W. L. Scheeren ◽  
Daniel de Backer ◽  
Bernd Saugel
Keyword(s):  
Cardiac Output ◽  
Minimally Invasive ◽  
Real Time ◽  
Pulse Wave ◽  
Pulse Wave Analysis ◽  
Wave Analysis ◽  
Analysis Methods ◽  
Time Pulse

Pulse wave analysis enables cardiac output to be estimated continuously and in real time. Pulse wave analysis methods can be classified into invasive, minimally invasive, and noninvasive and into externally calibrated, internally calibrated, and uncalibrated methods.

scholarly journals Nonlinear Pulse-Time Conversion in Radioisotope Devices: Analysis and Application Possibilities

2021 ◽  
Vol 12 (2) ◽  
pp. 133-138
Author(s):  
A. M. Vodovozov
Keyword(s):  
Real Time ◽  
Radiation Detector ◽  
Flaw Detection ◽  
Transformation Function ◽  
Computing Device ◽  
Measuring Devices ◽  
Object Movement ◽  
Set Of Points ◽  
Pulse Flux ◽  
Time Pulse

The paper considers the operation of radioisotope measuring devices under dynamic conditions, when the Poisson pulse flux at the output of the radiation detector becomes unsteady and the nonlinearity of the calibration curve of the device, the stochasticity of the radiation signal and the inertia of the meter significantly complicate the task of estimating the measured physical parameter. of the device and analysis of the possibility of its application for linearization of the characteristics of the device, increasing the speed of the devices and solving the measuring problem in real time.The process of nonlinear transformation of the radiation signal in the system is analyzed on the basis of the assumption about the exponential distribution of the intervals between the pulses of the information flow at the output of the radiation detector. A generalized algorithm for the synthesis of a given transformation function of a time-pulse computing device of a radioisotope device has been developed according to its mathematical description. To describe the transformation function given by a set of points, it is proposed to use its approximation by a power series.The proposed calculation formulas are verified by modeling in the Scilab program on a specific example of linearization of the curve of a radioisotope altimeter with a given tabular calibration characteristic. The results obtained confirm the expediency of using time-pulse computing devices for linearizing the conversion curve of radioisotope devices in real time.Carrying out calculations according to the proposed algorithms by means of modern microelectronics opens up new possibilities for expanding the field of application of radioisotope devices in dynamic problems of industrial flaw detection, measuring the parameters of object movement, thickness of rolled products and coatings, in devices for continuous monitoring of liquid media.

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