Monitoring the condition of indoor objects is an important task of building management systems. To solve the problems of monitoring optimal use of wireless sensors. The purpose of the article is to consider wireless passive sensors that do not require a separate power source. A generalized block diagram of a system for monitoring the condition of objects inside the premises is presented. Two types of sensor data are given: on the basis of radio private identification and on the basis of surface acoustic waves. Their principle of action is revealed and the areas of application in smart home control systems are shown. It is revealed that modern technologies allow solving the problem of providing power to wireless sensors using an external electromagnetic signal.

Keywords: wireless passive sensor, RFID tag, temperature measurement, sensor based on surface acoustic waves

Currently, one of the main problems of our time is to improve the ecology of the regions. Green areas can contribute to this, however, the southern region of Russia is caused by a dry summer period. In this regard, there is the task of ensuring high-quality irrigation, which is often carried out by automated systems. However, without feedback, it is extremely difficult to bring the process to the proper level of quality. To do this, use humidity sensors, the price of which inevitably leads to a strong appreciation of the system. This article discusses the possibility and feasibility of developing and implementing its own moisture sensor that would meet such positive criteria as low cost, high accuracy and wide range of measurements, high corrosion resistance, versatility of application.

Keywords: soil moisture sensor, automation, irrigation, capacitive measurement method, microcontroller, Southern Federal District

This article discusses the possibility of improving the environmental situation by changing the percentage ratio of metal and fiberglass fittings produced in the direction of increasing the latter. A comparative analysis of the calculation of the slab basement of 300-mm thickness was carried out, in the construction of which reinforcement made of steel (class A-500C) - and fiberglass were used. The results of the study led to the conclusion that, due to the recycling of plastic waste to produce this innovative building material, there is great savings for the manufacturer, and to this is added an improvement in the environmental situation in general, as the amount of industrial waste on the globe decreases without using environmentally friendly methods. destruction.

Keywords: Operation and reconstruction, design, construction safety, operation, fiberglass reinforcement, construction

The developed structural diagram of the special calculator in modular design with increased resistance to external influencing factors based on the 1892VM8Ya "Multikor" processor designed for use in onboard avionics systems is presented.

Keywords: Calculator, processor, MIL-STD-1533, controller, PLIS, microcircuit, special resistance

This article deals with the issue of the installation of traffic lights on the urban road network. A technique has been developed to select the method for controlling pedestrian traffic lights, and a model has been proposed for determining conditions for regulating pedestrian and traffic flows depending on intensity. The installation parameters of traffic and pedestrian traffic lights

Keywords: светофорные объекты, заторовая ситуация, пропускная способность, методика управления движением, безопасность движения, регулирование транспортных потоков, эффективность дорожного движения, аварийность, экологическая безопасность, интенсивность движения

The article discusses the use of reinforced polymer fibers in architectural and structural design of bridges on the example of structures in the Netherlands. The chemical structure of this material is presented - a polymer matrix reinforced with natural or artificial fibers. A brief historical background of the use of composite materials is given, a comparative analysis of structures made of new construction material and the traditional one is carried out. The problems and possibilities of this relatively new material are discussed. The variants of constructive solutions for the bridge construction of a new generation are proposed. The basic methods for the production of bridge components that meet aesthetic and economic requirements are described: the use of modular elements of the edges of the flooring, the construction of smart formwork and monocoque structures. The physicochemical properties of polymeric materials have been studied in detail, of which it is currently possible to manufacture reinforcement for bridges. In conclusion, the analysis of the effectiveness of the use of this material in architecture and construction over the past decades has been carried out and suggestions have been made about the future vector of the study and application of polymers.

Keywords: biocomposites, bio-resins, composite materials, lamination, monocoque structures, bridge deck, bridge construction, pultrusion profile

Presented and theoretically justified ways of improving the technology of centrifugation, to increase the uniformity of the concrete structure in the cross section, for example, by way of separate introduction of the components of concrete, the essence of which in the manufacture of spun goods consists in the introduction into the molding unit prior to the stage of compaction of coarse aggregate. The results of physical and mechanical tests of centrifuged concrete, showing that the layer-by-layer introduction of the concrete mixture components by the first method leads to an increase in the compressive strength in all layers of centrifuged concrete

Keywords: concrete, centrifugation, uniformity of structure, layer-by-layer introduction of components, compaction, water absorption at capillary suction, strength

The problem of recognition of defects in the surface layer of polished raceways of bearing rings according to the fractal dimension of the signals of the eddy current sensor is considered

Keywords: fractal dimension, defect recognition, recognition algorithm

The work is devoted to the review of application of wireless technologies for measurement of parameters of technological processes. Two types of wireless network architectures are considered: "star" and "cellular". It is proposed to take as a basis the topology "cellular scheme". Three wireless standards are given: ZigBee, Wi-Fi and Bluetooth. The advantage of ZigBee technology is shown. RFID technology is considered as the basis of the wireless sensor. Features of construction of system with its application are considered. The block diagram of the control system is given. Classification of RFID-tags is given. Examples of such sensors are given.

Keywords: wireless technologies, cellular circuit, RFID tags, wireless sensors, automation of technological processes

Three batches of Co-MxOy / SiO2 catalysts were prepared with different methods of introducing an oxide additive. Physicochemical studies of catalysts by elemental analysis and Brunauer-Emmett-Taylor (BET) methods have been carried out. The effect of additives of oxide promoters and the method of their introduction on the specific surface, volume and pore sizes for Fischer-Tropsch synthesis catalysts were studied.

Keywords: Fischer-Tropsch synthesis, carbon-containing resources, catalyst, active component, silicate carrier, Al2O3 and ZrO2 promoters, elemental analysis, BET method, surface area, volume and pore size

Using the methods of thermo-programmed reduction (TPV) and thermo-programmed hydrogen desorption (TPD H2), physico-chemical studies of Co-MxOy / SiO2 catalysts obtained by various methods of introducing a promoter additive were carried out. The effect of the introduction method and the nature of the promoting oxide additive on the properties of the active component of the Fischer-Tropsch synthesis catalysts was studied.

Keywords: Fischer-Tropsch synthesis, catalyst, active component, silicate carrier, Al2O3 and ZrO2 promoters, TPV and TPD H2 methods, crystallite size, degree of reduction, dispersity

The article reviews considers the current state of automated process control systems. The main disadvantages of these systems are identified: the lack of full integration of process control systems into a single enterprise system, the lack of a single system of monitoring and diagnostics of equipment, local data storage. The principles of development of automation of the chemical industry in the conditions of digital production, such as end-to-end modeling, implementation of a unified data collection system based on the technology of industrial Internet of things, the introduction of cloud technologies to store the accumulated database and knowledge. This strategy of automation development allows to increase the competitiveness of the chemical industry.

Keywords: production automation, digital production, end-to-end modeling, industrial Internet of things, production management integration.

The article deals with the process of spraying immiscible liquid media with a disk spray. A mathematical model for determining the dispersion characteristics of spraying is proposed.

Keywords: liquid, atomization, flow, speed, dosing

This article discusses the basic principles of the use of structural membranes in the reconstruction of buildings and structures. Three principles of intervention in the existing architecture are described in detail. The first is to preserve the historical appearance and character of the building. The second is the scale of the new and old parts of the building. The third is the difference and the possibility of reorganizing new designs. The characteristics of the goals, the achievement of which each of these principles is directed, are given. Using the example of several buildings, we analyzed the use of textile membranes to achieve the main goals of reconstruction, described the positive and negative aspects of restoration using textile membranes. These buildings include: a church on a hill in Corbera d'Ebr, Spain (roof restoration), the central courtyard of the Palacio de Mineria, Mexico (creating coverage over a yard area), Salzburg residence, Austria (sliding roof). In conclusion, conclusions were made about the advantages of using membranes for the preservation of historical heritage and possible prospects for the development of fields of application of this design.

Keywords: architecture, membranes, reconstruction, restoration, structural structures

In article results of the analysis of method of calculation of flat plates of girderless floors are considered on breakdown according to the Russian and foreign design codes are considered. The analysis of the received results demonstrates that in the considered calculation procedures on breakdown similar settlement models are used and identical power factors are considered. Namely the pressing-through effort and the bending moments operating in two planes. Taking note of the moments in various techniques is carried out in two ways. The first way – tangent tension is entered into settlement model. And each technique offers the form of an epyura of tangent tension. The second way – introduction to a condition of durability of the empirical coefficient considering influence of the bending moments. Approach to purpose of geometrical parameters of a settlement (critical) contour is not identical. Contours of different techniques differ in a form and the sizes. And the difference of the sizes is very considerable. It is established that work of knot of interface of girderless flag with a column is studied yet not fully and additional researches on generalization of calculation procedures are required.

Keywords: reinforced concrete, girderless floor, breakdown, working height of section, transversal armature, pyramid of breakdown