System of monitoring of special purpose computers safety
FIELD: information technology.
SUBSTANCE: system contains a management server, a database server, an administrator work place, radio frequency readers connected to the management server, and radio frequency identification emitters (RFID-tags) installed on the monitored components of computer, readers and tags contain unique electronic identifiers and are linked by a radio frequency channel for information exchange with the ability to monitor the status and location of monitored components. An active RFID-tag is generated on the critical monitored computer component, which generates information about the protected component and its location in this computer, and the monitored component is placed in a closed shielding RF signal housing that blocks the direct communication channel between the tag and the reader in normal closed state of the computer and opens the channel for transmitting information about an attempt to unauthorized access to the protected component at the opening of shielding housing.
EFFECT: increasing the efficiency of protecting the computer from unauthorized actions.
3 cl, 1 dwg
SUBSTANCE: invention relates to medical equipment, namely to devices for magnetic resonance. Device contains electric device or component, which includes printed circuit board, and radiofrequency shield, made with possibility of shielding electric device or component, with radiofrequency shield including earth bus of printed circuit board. Device is placed in opening of magnetic-resonance scanner in radiofrequency (B1) field. Earth bus of printed circuit board includes electro-conductive sheet or layer, which has openings, suppressing vibration of earth bus, induced due to changing in time gradient of magnetic field. Magnetic-resonance system contains magnetic-resonance scanner, including basic magnet, winding for creation of magnetic field gradient and one or more radiofrequency coils for production of radiofrequency (B1) field in studied area. Device is placed in opening of magnetic-resonance scanner.
EFFECT: application of invention makes it possible to improve efficiency of MR-compatible electric device work due to reduction of vibration, caused by radiofrequency field.
14 cl, 11 dwg
FIELD: printing industry.
SUBSTANCE: structure of a multi-layer printed circuit board consists of signalling dielectric signal layers comprising topological pattern of printed assembly, alternating with shielding layers made of a grid which is provided with printed conductors tracking the configuration of the topological pattern of the adjacent signal layer. The outer layers are covered with a double layer protective coating consisting of a mixture of ferrite powder with a polymeric binder. The concentration of ferrite powder in the layers of the protective coating is different, at that the layers are applied so that their contact surface, in cross-section in any direction, has a sawtooth configuration.
EFFECT: improvement of quality of protection of printed circuit boards from EMF exposure, providing improved electromagnetic compliance of the printed circuit board with other devices.
FIELD: radio engineering, communication.
SUBSTANCE: invention relates to pressure housings and specifically to inlets in said housings. The apparatus includes a base (204) and a wall (203) which defines an internal part and an external part, wherein a sealed inlet has a first portion (202a') of a signal transmission line located outside the housing, a second portion (202b') of a signal transmission line located outside the housing, and a third portion (202c') of a signal transmission line which connects the two other portions (202a', 202b'), wherein the inlet is characterised by that the first portion (202a') is displaced from the wall to provide a first safe distance d, which is the distance between a first portion (202a) of the signal transmission line located on the surface of a second layer and metal parts of the housing.
EFFECT: providing an inlet which minimises the risk of the multipactor effect and enabling the inlet to operate when transmitting high-power signals.
13 cl, 6 dwg
FIELD: radio engineering, communication.
SUBSTANCE: ventilation panel of an electronic device, placed in a housing, consists of a frame and a ventilation plate built into the frame, made of an electroconductive metal or alloy, having a field of ventilation openings, the greatest dimension of each of which provides a given level of shielding the maximum frequency of the electromagnetic radiation of the electronic device, and means of mounting the frame to the housing of the electronic device, which provide electrical contact. The frame of the ventilation panel has at least one recess, the dimensions and shape of which correspond to the dimensions and shape of the ventilation plate, and the depth is greater than 0.5 times the thickness of the ventilation plate; the ventilation plate has a field of openings on its entire area, the maximum dimension of which is selected in the range of 2.0…6.0 mm, and elements for mounting to the frame in the recess, which provide electrical contact. The method of making a ventilation panel includes the following: cutting the ventilation plate from a given type of a perforated sheet of electroconductive material with openings, the greatest dimension of which is in a range which provides a given level of shielding electromagnetic radiation of the electronic device; connecting the plate with the frame using screws or electroconductive adhesive or by welding or soldering.
EFFECT: simple design of the ventilation unit owing to low labour input in making the ventilation panel with high effectiveness of shielding, simple method of making ventilation plates.
16 cl, 14 dwg
SUBSTANCE: invention is referred to the sphere of protection against electromagnetic interference (EMI) and may be used for protection of computer technology facilities (CTF) of information and communication systems against impact of external and stray electromagnetic radiation (SEMR). A multilayer honeycomb straightener is used with fabrication inhomogenuities made in the form of hollow rectangular prisms with cross-section shaped as staggered regular hexagons and of radar absorbent composite materials.
EFFECT: higher screen factor.
SUBSTANCE: by the method for manufacturing of a high-power hybrid integral circuit of SHF band individual dielectric layers are made in the preset sequence at a multilayer dielectric substrate with at least one through opening; the preset metallised coating for the circuit is applied to each dielectric layer and screen earthing metallisation is applied to the reverse side of the lower layer at the multilayer dielectric substrate. The preset sequence for the multilayer dielectric substrate is formed by location of separate dielectric layers with simultaneous superimposition of their through openings thus creating at least one through opening in the multilayer dielectric substrate; then sintering and annealing are carried out; the multilayer dielectric substrate is placed and fixed by screen earthing metallization at electricity- and heat-conductive base; an active heat-generating component is placed and fixed in each through opening of the multilayer dielectric substrate ensuring location of their faces in the same plane; electric contact pads of the active heat-generating component are connected to the circuit layout of the metallised coating of the multilayer dielectric substrate.
EFFECT: improving electrical performance due to improvement of heat removal, increase in fabricability with maintenance of available weight and dimensions.
3 cl, 1 dwg, 1 tbl
SUBSTANCE: device comprises a dielectric case filled with a substance having conductivity and bioactive liquid is used as this substance, at least one polarized photon generator closed by a cover hermetically and installed in the dielectric case filled with bioactive liquid, and at least one tube installed hermetically in at least one opening made in the case cover, at that the tube is made of dielectric having positive value of static electricity surface charge. One end of the tube is submerged to the bioactive liquid while the other end is outputted from the case and closed by a plug of organic material transparent for photons and selected of the group consisting of resins of hardwood and softwood. The bioactive liquid enters into the tube partially.
EFFECT: improved efficiency of neutralisation of electromagnetic background.
13 cl, 3 dwg
SUBSTANCE: invention relates to means for protection against electromagnetic fields of electrotechnical and electronic devices and biological objects and can be applied for creation of electromagnetic screens and echo-free chambers. Composite material for protection against electromagnetic radiation consists of polymer base with distributed in it particles of alloy of system Fe-Cu-Nb-Si-B, and is characterised by the fact that it represents multi-layered construction, each layer of which is made of said composition, and content of alloy particles in each layer constitutes 70-90 wt % and is limited by certain range of size of particles from continuous line 1-200 mcm with increase of particle dimensions in each following layer.
EFFECT: increase of working range of material frequencies from 100 MHz to 10 GHz with preservation of low values of reflection coefficient and high values of magnetic permeability.
3 cl, 1 tbl, 2 dwg, 2 ex
SUBSTANCE: heat-resistant radar-absorbing coating on mineral fibres is obtained by applying an electroconductive carbon layer on mineral fibres with diameter of 4…9 mcm. The carbon coating is obtained from flat carbon particles that are chemically activated in sulphuric acid and nitric acid, said particles having thickness of 4.0…7.0 nm and diameter in the layer plane of 800…3000 nm.
EFFECT: high heat resistance of the coating, wider operating temperature range and wider range of possible applications of the radar-absorbing coating while maintaining efficiency of absorbing electromagnetic radiation.
3 dwg, 7 ex, 2 tbl
SUBSTANCE: invention relates to a composite film for absorbing electromagnetic waves and an apparatus for making such a film. The composite film has a plastic film and a single- or multilayer metal film which is formed on at least one surface of said plastic film. The metal film has thickness of 0.01-10 mcm, and is coated with a plurality of substantially parallel, periodic, linear scratches made in at least two different directions. Said scratches in each direction differ on width and space in between them.
EFFECT: making a composite film with good absorption capacity for electromagnetic waves at different frequencies and low anisotropy absorption capacity for electromagnetic waves.
10 cl, 36 dwg, 14 ex
FIELD: radio engineering, communication.
SUBSTANCE: invention relates to remote signalling and protection of domestic premises, offices, production rooms against unauthorised action and intrusion, and namely to door intercom systems for calling conversations and transmitting information using a mobile telephone, a smartphone or other interactive client devices connected to networks of movable wireless radio communication and wire communication. An interactive intercom system has a housing with a display, in which a controller is located, which is connected to a receiving-and-transmitting routing device, with an event transducer, with an interactive panoramic video camera - a video observation hole, with a panel of the intercom system of internal communication and with a conversation device with a microphone and a dynamic speaker. Software of the controller defines an emergency situation and provides connection through the router to a global network and communication to a user interface and to computer and/or telephone network, to a central monitoring station and/or emergency services by means of modules and interfaces of wire and wireless communication. The conversation device is activated by means of the user interface or the central monitoring station or according to a controller software algorithm.
EFFECT: possible communication of a user with a visitor or a person who has broken into a protected object in an unauthorised manner.
8 cl, 1 dwg
SUBSTANCE: invention can be used at application of detectors with long linear part composed of flexible cable running on wire-wave or vibration principle for warning coverage of four-way crossings and their detours. Proposed method consists in fitting two detectors with long flexible cables at four-way road crossing so that flexible cable of every detector crosses of one of the roads ad a distance from the crossing centre equal to threefold width of detector detection zone. Note here that its definite length section is located nearby along the other road to cover it by its detection zone at the ratio between detection zone width and section length making 1:3:22.5. Algorithm is used to define the breaker motion direction by quantity, order and relationship between alarm signals duration.
EFFECT: higher probability of rules breaker detection and accurate determination of direction of its motion.
SUBSTANCE: method of performing independent control of sensitivity on each of N sections of a detection area, divided using chirp range selection, as well as combined correlation processing of Doppler signals corresponding to defined sections of the detection area based on the level, onset time, duration, rate of change and number of the section in different combinations or interrelationships which reflect the typical effect of interference and behaviour of an intruder in the detection area. The radio beam intrusion detector comprises a reference frequency generator, a linearly variable voltage generator, a controlled microwave signal generator with a transceiving antenna, a signal mixer, series-connected amplifier, band-pass filter, frequency analysis unit, frequency spectrum harmonic signal processing unit, connected with distance from the radiation point to the target (range harmonic), switches for the sections of the detection area and a sensor output signal former. The device further includes: a data recording and storage device which sets modes of the range harmonic signal processing unit separately for each range harmonic, a range harmonic signal correlation analysis and processing unit which jointly processes signals of the frequency analysis unit, analysers correlation parameters thereof and generates a signal to the second input of the sensor output signal former.
EFFECT: high noise-immunity of the sensor and reliability of detection.
2 cl, 1 dwg
SUBSTANCE: invention can be used when employing detection means with an extended flexible linear part in the form of a flexible cable, which are based on a wave-conduction or vibration detection principle, for signalling coverage of a four-way road intersection and bypass paths thereof. The method includes deploying, at a four-way road intersection and the adjacent area, two detection means with an extended flexible linear part such that they each cross three roads on a semicircle without crossing each other, extensions of said extended flexible linear parts lie along two roads through which the most likely directions of bypassing the intersection by an offender pass, and using an output algorithm which determines the direction of movement of the offender based on the order of arrival of one to four alarm signals over established time intervals for accumulation thereof.
EFFECT: high probability of detection, specifically detecting an offender when the offender moves in all directions, and accuracy of indicating the direction of movement of the offender, specifically from twelve directions of movement on an intersection - four are determined in pairs and eight uniquely, the directions of bypass are also determined in pairs when signalling coverage of a road intersection and bypass paths thereof using only two detection means.
SUBSTANCE: invention consists in receipt of heat emission by two sensors placed at opposite boundary sides at the known distance from each other in direction along its lines. Received emission is converted to electrical signals characterizing duration of signals sensed by sensors since their commencement till their positive and negative maxima (t1, t2, Δt1, Δt2), as well as between commencement and positive maxima of the signal from two sensors (t4, t5). All potential alternatives of boundary crossing, being represented as the main population Ω, differ from each other by object size in regard to objective filed of view and position of movement pattern in regard to the boundary sides. Synthesis of class-division algorithm in the area of real events is based on search of the respective signs in the area of time responses occurring at emission receivers. An expert model is developed as a set of the above signs differentiating by discriminator functions, which allows on the basis of time interval analysis identification of the boundary-crossing alternative and parameters of crossing: longitudinal and transversal dimensions of the violating object, speed of its movement and position of the movement pattern in regard to secured (controlled) boundary. Based on estimation of the received parameters of the boundary crossing the decision adequate to general purpose of the system is taken: alarm signal is sent, violating objects are counted and sorted by size, etc.
EFFECT: improved interference resistance for violator detection due to analysis of violation parameters.
FIELD: physics, signalling.
SUBSTANCE: invention relates to alarm signalling for detecting an intruder in the detection area of an extended security boundary. The sensitive element used in the disclosed seismic recording system is an extended seismic line which detects mechanical vibrations of the ground when an intruder moves on segmented areas of the extended seismic line with monitoring of each of the segments of the area of the security boundary, merged into groups of seismic links. The system consists of a central security post and a plurality of electronic units, designed to generate the number of the segmented area on which intrusion is detected. Each seismic link consists of a pair of seismic detectors mounted in the ground on the security boundary. The electronic units for generating the number of an area are connected to the central security post by a first RS-485 interface line. The seismic links are connected to corresponding electronic units by other CAN interface lines.
EFFECT: higher accuracy of localising a point of intrusion of a security boundary.
6 cl, 7 dwg
SUBSTANCE: system includes an operator's panel connected by a link to a surveillance system mounted on a rotary platform with a video camera and a thermal imager. The rotary platform is fitted with a coordinate positioning system which is linked to a local or geographic coordinate system, and the operator's panel is connected by links to alarm sensors placed on the protected area and separately linked to the same local or geographic coordinate system.
EFFECT: faster and more accurate detection.
FIELD: physics, signalling.
SUBSTANCE: invention relates to means of detecting an intruder of extended security boundaries. The technical result is faster and more accurate determination of the area of intrusion. The system consists of a central security post and a plurality of electronic units, each connected to a group of signal processors. Each signal processor is connected to a segmented vibration-sensitive element mounted on a physical enclosure. The electronic units are connected to the central security post by a first RS-485 interface line. The signal processors are connected to corresponding electronic units by other CAN interface lines.
EFFECT: improved functional reliability of the system by improving noise-immunity and accuracy of locating the point of intrusion, as well as use the principle of digital information transmission via communication lines with fewer wires.
6 cl, 8 dwg
SUBSTANCE: invention can be used when employing detection means with an extended linear part, which are based on a wave-conduction or vibration detection principle, for signalling coverage of a four-way road intersection and detours thereof. The method includes deploying, at a four-way road intersection and the adjacent area, two detection means with an extended linear part such that the extended linear part of each means overlaps two different roads, one twice and other once, with the ratio between the distances from the centre of the intersection to the intersection points of 1:2:1 and using an output algorithm which determines the direction of movement from a sequence of one to four alarm signals coming from the detection means over a set time for accumulation thereof, and the ratio between time intervals of delay between the arrival of signals. The method includes a preparatory step with deployment based on a developed scheme of the extended linear part of two detection means on an area and a main step which begins from the moment an offender enters the detection area of one of the detection means, during which the offender is detected, and the direction of movement of the offender is determined.
EFFECT: high probability of detection and accuracy of indicating the direction of an offender during signalling coverage of a road intersection and detours thereof using only two detection means.
FIELD: physics, signalling.
SUBSTANCE: disclosed is a method of creating unbearable mental conditions for intruders in closed premises (offices, banks, cars etc.), fitted with special-purpose locking devices. Said conditions are created by automatically turning on an ultrasonic generator, the radiation of which is directed into the interior of the premises. The ultrasonic radiation is modulated with rectangular pulses with modulation frequency of 1 Hz or higher. The pulse ratio of the ultrasonic radiation is set equal to 2. The resultant radiation pressure is equivalent to infrasound radiation. Parameters of the ultrasonic radiation and reverberation time are associated with parameters of the premises, particularly with the size and coefficient of reflection of the sound wave by walls of the premises.
EFFECT: providing higher radiation power while reducing overall dimensions of the radiator.
2 dwg, 1 tbl
FIELD: radio engineering, communication.
SUBSTANCE: invention relates to the field of creation of radio-frequency tags. The conflict resolution platform (119) provides initiation, at least, partial, of scanning of the memory tag data channel in the first active final point (101a-101n) for detection of a power supply condition for the named passive final point. Then the conflict resolution platform (119 identifies the second active final point (101a-101n) on the basis, at least, partially, detection of the named power supply condition. The conflict resolution platform (119) generates the query of the second active final point for entry of the first active final point into the active mode with reference to the named passive final point and sends this query. Then the conflict resolution platform (119) attaches the first active final point to one or more power supply periods to the passive final point on the basis, at least, partially, of the received response.
EFFECT: providing of resolution of conflicts of passive final points (103a-103m).
28 cl, 13 dwg