RU2526478C2 - Method and device of microwave electromagnetic impact at trespasser - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: group of inventions relates to the field of production of mechanical vibrations with the help of electromagnetism and may be used in systems of physical protection of objects from trespassers. The method of microwave electromagnetic impact at a trespasser suggests using an amplitude-modulated microwave electromagnetic field with variable modulation frequency. At the same time frequencies of amplitude modulation are taken in the range of mechanical resonant frequencies of a trespasser's head and separate elements of its acoustic organ, providing for non-lethal pain stimulation. The device of microwave electromagnetic impact at a trespasser comprises a microwave generator with an emitting antenna, an amplitude modulator and a unit of low frequency tuning, made as capable of tuning for mechanical resonant frequency of a trespasser's head and separate elements of its acoustic organs. At the same time the outlet of the low frequency tuning unit is connected to a control input of an amplitude modulator, the output of which is connected to a control input of the microwave generator.

EFFECT: reduced energy inputs and eliminated possibility to injure a person.

2 cl, 1 dwg

Description

The invention relates to the field of obtaining mechanical vibrations using electromagnetism and can be used in physical protection systems of objects from intruders.

A known method and device of acoustic exposure to the intruder [1]. The disadvantage of the analogue [1] is the ability to easily counter violators by using means of hearing protection, such as ear plugs, protective acoustic headphones.

Known "system of active counteraction" - Active Denial System (ADS) manufactured in the USA [2]. The ADS installation emits directed energy in the range of millimeter waves, which has a short-term painful thermal effect on people at a distance of up to 500 m. The Active Denial System microwave emitter is based on the conversion of electric current into high-frequency waves using a gyrotron.

To power the installation, a standard diesel engine of the car is used, on which the ADS system is installed or a mobile power station in a separate trailer. The main disadvantage of this system is the need to create significant radiated power required for rapid thermal heating of the surface of the human body. Hence the cumbersomeness of the installation, including a mobile power plant.

The technical result of the invention is to reduce energy costs, the exclusion of the possibility of causing physiological damage to humans and the increase in range compared to the prototype.

The technical result is achieved by the fact that it is proposed to use directional radiation modulated by amplitude of the microwave electromagnetic waves. The impact on the intruder is due to the occurrence of painful mechanical thermoelastic phenomena in individual elements of the human auditory apparatus at their resonant frequencies. The used effect of the direct reception of pulsed electromagnetic radiation from the microwave is known as the phenomenon of “radio sound” [3, p. 19-34]. The effect of “radio sound” is used for “painless” wireless bionic communication with a person and manifests itself in the form of the occurrence of auditory sensations due to mechanical vibrations excited in the bone-tissue formations of the skull during the absorption of energy of microwave electromagnetic radiation pulses. To realize a painful non-lethal effect on an object, the frequency of the amplitude modulation of microwave electromagnetic waves is selected equal to the frequency of the resonant bursts of "radio sound".

Resonance phenomena in the “radio sound” are due to the size of individual elements of the human auditory apparatus and are observed in the range of modulation frequencies of 6 ... 12 kHz [3].

The selection of the resonant frequencies of the modulation of the amplitude of the microwave electromagnetic field allows you to achieve maximum efficiency of non-lethal pain exposure while minimizing radiated power and the likelihood of risks of causing physiological damage to humans.

Figure 1 shows a block diagram of a device that implements the proposed method of microwave electromagnetic exposure to the intruder.

The microwave device for electromagnetic influence on the intruder contains a low frequency tuner (1), an amplitude modulator (2), a microwave generator (3), a radiating antenna (4), an intruder (target) (5).

The microwave device electromagnetic effects on the intruder works as follows.

The signal from the low-frequency tuning unit (1), which sets the current value of the modulation frequency, varying in the range of mechanical resonant frequencies of the head and individual elements of the hearing organs, is fed to the amplitude modulator (2). The amplitude modulator (2) provides modulation of the signal at the output of the microwave generator (3) according to the law specified by the low-frequency tuning unit (1). The signal from the microwave generator (3) is fed to a radiating antenna (4), which forms a narrow beam of an amplitude-modulated microwave electromagnetic field that acts on the intruder (5), thereby causing painful sensations in his head and hearing organs. As a result, the intruder will be forced to refuse unauthorized access to the guarded object and as soon as possible will leave the zone of influence of the modulated microwave field.

Information sources:

1. The method and device of acoustic impact on the intruder: US Pat. RF, No. 2436297: decl. 04/13/2010: publ. 12/20/2011. Authors Shcherbakov G.N., Antselevich M.A.

2. Defender. Spotlight on National Defense Technolodgies. Volume IV. ISSUE 3. URL: http://www.raytheon.com/ourcompany/rtnwcm/groups/public/ documents / content / defender4_3.pdf (accessed November 16, 2012).

3. Tigranyan R.E. The physical basis of the bionic microwave communication channel. M .: IP RadioSoft, 2012.332 s.

Claims (2)

1. The method of microwave electromagnetic exposure to the intruder, characterized in that the effect is carried out by an amplitude-modulated microwave electromagnetic field with a changing modulation frequency, while the amplitude modulation frequencies are taken in the range of mechanical resonant frequencies of the intruder’s head and individual elements of his hearing organ. 2. A microwave device for electromagnetic influence on an intruder, comprising a microwave generator with a radiating antenna, characterized in that an amplitude modulator and a low-frequency tuner are introduced into it, configured to tune to the mechanical resonant frequency of the intruder’s head and individual elements of its hearing organs, The output of the low-frequency tuning unit is connected to the control input of the amplitude modulator, the output of which is connected to the control input of the microwave generator.