Article desribes the change in the ST-segment offset of the electrocardiagramm according to the variaty effects like fluctuations, respiration, additive noises, and heart rate deviation. Authors proposes to identify the ST-segment location in already synthesised ECG signal, adding an offset with consecutive nonlinear interpolation using National Instruments LabVIEW BioMedical Toolkit
Keywords: Electrocardiogram, ST-segment, synthesized ECG, elevation, depression, heart rate, T-tooth, isoline, smoothing, interpolation
Temperature correction of natural gas volume is considered. Article was proove the positive econoimic effect for end consumer of the usage accounting units with temperature correction. Was descrided the technical issues of gas temperature measurements and mathematical expressions for indirect measurenets.
Keywords: temperature correction, temperature compensation, bringing gas to standard conditions, natural gas accounting unit, indirect temperature measurement of gases
The paper describes the wireless network organization of accounting units of energy resources and water as a part of automated complex. Shows the architecture of the whole complex of accounting, recording and analysis of energy consumption. Were highlited the key points in terms of complex reliability. Was given the analysis of the various options for multiple access to the wireless media, described the advantages and disadvantages of each of them.
Keywords: automated system of control and accounting of energy resources, wireless technology, multiple access to the radio channel, energy accounting device.
Today developing specialized microelectronics in Russia is an actual problem because many components are absent on the open market, and also because import substitution is a vital task. One can’t make front-end products just by copying, new electronic components must be developed. These components needed in real production sector of economics. One must be aware that to develop the product with competitive ability only some universal scheme must be realized. Nowadays the market is being overpopulated by different smart sensors: temperature, gas, ph-metering. These products are used in different sectors of economics from smart houses making to heavy machinery production. World market has specialized electronics for signal conditioning called analog front-end (AFE). Usage of these components allow to make end-products of significantly smaller size, and also to make their self-cost lower. Smart vibration sensors do not have its AFEs today, so the problem of minimizing their size is not solved. To develop such electronics one need to form a basic structure of AFE suitable for all vibration measurement. For the basis for this structure can be used the structure of a sensor itself, and products already put to market could be used for an example of such electronics. There are certain differences between present AFEs and needed ones for smart vibration sensors. Most of differences concentrated in the input schemes and ADC.
Keywords: smart sensor, analog front-end, microelectronics, vibration sensor, piezoelectric element, signal conditioning
The article describes an alternative approach to the construction of the transponder timing systems. Describes the proposed approach to the creation of a highly mobile system, the basic principles of its operation and the analysis of experimental results
Keywords: transponder timing systems, time-stamping, wireless tags, specialized communication protocols
In this article the testing of analog characteristics of AFE-circuits ADS1293A on measuring stand are presented. The analysis of the characteristics of the chip to be used in medical equipment.
Keywords: AFE-chip, Holter monitor, cardiograph, testing energy, medical equipment