The paper discusses challenges that the present-day electronic industry of the Russian Federation faces today, analyses reasons for lagging in this sector in volume and production scale of the finished products in comparison to the leading in this area countries, suggests ways for reaching a new level in this industry by implementing a nationwide digitalization, reviews a place of digital signals in modern-day electronic, their types, creation methods, main characteristics, devices for generation and processing. The method of digital signals forming using the multivibrator was suggested in this paper. Different multivibrator types were reviewed, including the multivibrator with AND-NOT gates, its advantages were considered in comparison with the transistor stage multivibrators, parameters of the electronic circuit elements in the AND-NOT gate multivibrator for generating a signal with the required characteristics were calculated, then the multivibrator was assembled and the output signal parameters were taken down. The output signal parameters and the calculated parameters were identical. The conclusion was made about the possibility of the suggested AND-NOT gate multivibrator application in the complex automatic control circuits and electronic systems indication circuits as a device that generates signals with the required parameters.
The article presents experimental studies of the application of electromagnetic technologies for impact on biological objects. Tomato seeds were chosen as experimental biological objects. For the study, the technological parameters of EMF were obtained using the method of full factor experiment. Laboratory and field studies were carried out. In laboratory studies, the results of EMF effects on chromosomal aberrations of tomato seeds were obtained. Dependencies of chromosomal aberrations in tomato seeds on changes in seeds EMF exposure, EMF frequency, and EMF power flow density were given. In field studies, pre-sowing treatment of tomato seeds with electromagnetic radiation was performed in order to cause changes in biochemical processes in the plant. During the experiment, 55 options of pre-sowing EMF treatment with specified parameters were obtained. Dependencies of tomato seed germination on input parameters - EMF frequency, power flow density and exposure were given. After laboratory and field tests, it was concluded that pre-sowing EMF treatment of tomato seeds with optimal parameters results in an increase in chromosomal aberrations of tomatoes by 5.5%; field germination of tomatoes by 18%.
The problem of control and quality of agricultural products is relevant for agro-industrial production. To determine the quality indicators, for example, milk, various indirect methods are used, but they are complex, some require special preliminary preparation of the sample. We need methods that will meet the following requirements: simplicity, speed and mobility. The identification of the electrophysical properties of biological objects can become the basis for the development of an electromagnetic method that will meet the above conditions. The article considers processes based on a change in the voltage (output signal) of a parallel oscillatory circuit in which an inductive cell contains the studied agricultural products. (Research purpose) The research purpose is in developing a device for determining the electrophysical properties of biological objects, analyzing the results of the study, obtaining the dependences of the output signal of the resonant amplifier on the frequency of the generator. (Materials and methods) The article presents studies of the resonant processes occurring in the simplest parallel oscillatory LC circuit. The article analyses the effect on the output parameters of a parallel oscillatory LC circuit when its inductance changes by placing various substances in an inductive coil. (Results and discussion) The article presents a block diagram of an electromagnetic device for determining and studying the electrophysical properties of biological objects. The block diagram is implemented directly into an electromagnetic device. Authors created a program in the MATLAB package for processing the experimental data. Based on the results of processing, authors got frequency dependencies for various biological objects of agriculture. (Conclusions) The processing of an array of experimental data will allow us to determine the functional, statistical and logical dependencies between the output and input values of the presented device.
An important task in the development of sources of electromagnetic vibrations used in the design of dielkometrical systems for biological objects is to reduce the level of interference of the electromagnetic vibrations source in the output spectrum. Methods for suppressing side components in the output spectrum conflict with the dynamic characteristics of the electromagnetic vibrations source, in particular, they do not meet the requirements for the tuning speed in the specified wave ranges. (Research purpose) The research purpose is in developing the basic structure of the exciter of the dielkometric system for the study of biological objects, allowing obtaining previously unacceptable values of suppression of the comparison frequency and its harmonics. (Materials and methods) Authors applied the compensation method to obtain the required spectral and dynamic characteristics of the electromagnetic vibrations source. The article sets the problem of adaptive noise compensation, which was solved using a quasi-optimal method, the method of the minimum of the average square error. (Results and discussion) The article proposes the basic structure of the exciter of the dielkometric system for the study of biological objects. It was shown that the adaptive method results in suppression of side components in the spectrum of the output signal source while maintaining the required speed. The spectral components of the output signal of the electromagnetic source were studied using a functional method. It was found that there is an effective convergence of the transfer functions of adaptive filters of the adaptive compensator of side components to the nonlinear transfer function of the corresponding orders of the dynamic system. (Conclusions) The article presents the developed structure of the exciter of the dielkometrical system using an adaptive compensator of side components, which allows to obtain previously unacceptable values of suppression of the comparison frequency and its harmonics. It was found that the use of this structure of the exciter will improve the dynamic characteristics of the dielkometrical system as a whole. It was found that the use of adaptive filters increases the speed of the exciter by 5-10 times.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.