RU216889U1 - PASSIVE PROTECTION DEVICE AGAINST UNMANNED AERIAL VEHICLES - Google Patents

Abstract

The utility model relates to air defense means and can be used to prevent the penetration of unmanned aerial vehicles (UAVs) into a controlled area for the purpose of conducting reconnaissance, terrorist attacks or striking objects by creating a light curtain. The device comprises a housing 10, in the front part of which there is an output window 6 for a laser beam formed from a laser 3 located in the housing. A horizontal scanning mirror 2 is installed in the path of the laser beam, connected to a drive 4. Perpendicular to the oscillation axis of the plane of the horizontal scanning mirror 2 is installed vertical scanning mirror 1 connected to the drive 5. The scanning mirrors are fixed on the rotation axes of the drives and are integral with them. Drives with a laser are a galvanometric scanner (scanator). 3 ill.

Description

The utility model relates to air defense means and can be used to prevent the penetration of unmanned aerial vehicles (UAVs) into a controlled area for the purpose of conducting reconnaissance, terrorist attacks or striking objects by creating a light curtain.

Known systems for protecting a certain area of space from UAVs, which include a means for the primary detection of UAVs and a means of neutralization designed for directional radio suppression of the UAV control signal, which is performed until the UAV leaves the controlled area (see, for example, patents for the invention of the Russian Federation No. 2746102 , IPC G06T 1/40, published 04/07/21, No. 2755603, IPC G06T 7/60, published 08/17/21).

However, these systems require prior detection, as the zone of deployment of troops is incomparable with the size of the UAV, the latter will detect and transmit intelligence to the enemy much earlier than it will be detected itself. If an enemy UAV is detected, this means that the data on the composition, strength and weapons are already known to the enemy and its neutralization is already useless. Separate tracking of each UAV is inefficient.

A portable laser protective device is known (see RF patent No. 2197010, IPC G02B 27/48, publ. 20.01.03), which can be used as an individual protective and lighting device designed to illuminate objects and provide protective light exposure in case of a threat of attack. The device comprises a housing, a power supply, a semiconductor laser diode and a lens mounted with the possibility of its movement along the optical axis. The device is equipped with a cylindrical lens element made of at least two cylindrical lenses, one of which is rigidly fixed in the body, and the other is installed with the possibility of rotation through an angle multiple of 90° relative to the initial position, which is taken as the one in which the main sections the first and second lenses, having the same profile, are perpendicular to each other, and the main section of the second lens is aligned with the plane perpendicular to the smaller side of the radiating end of the laser emitter glow body and passing through the center of its exit window. The front focus of the lens is aligned with the emitting end of the glow body. EFFECT: increased efficiency of security measures and protection against attack due to more accurate and directed impact.

However, this device is not designed to create a light curtain effect for passive defense against UAVs.

Closest to the claimed device is an installation for creating a zone of continuous laser radiation using laser pointers to defeat / dazzle enemy personnel (see RF patent No. 2578488, IPC F41B 15/00, publ. 03/27/2016). The installation consists of a rod on which several laser pointers are fixed perpendicular to it. Each of them is located at some distance from one another parallel to each other. The upper end of the rod is fixed with a tripod to prevent it from beating when rotating around its axis. The rod is clamped in the chuck of an electric drive powered by the mains or by a battery, batteries and equipped with a rotation speed controller. To provide the rod with left-right turns or linear reciprocating motion, a gearbox and other parts are used. All these design elements of the installation ensure the creation of continuous horizontal laser lines, which are formed at a frequency of movement or a speed of rotation of the rod around its axis of about 360 turns or revolutions per minute. The optimal frequency is 360÷720. Each beam cuts off its own layer of airspace. In other words, scans it. The installation allows blinding tank drivers, armored personnel carriers, gunners, snipers, etc., as well as blinding the personnel of naval vessels. In this case, armored vehicles or ships will be unguided, which makes it possible to capture them, if such a task is set. As for aircraft carriers, the pilots will also be subjected to laser attack. Then carrier-based aviation flights will be disrupted.

The disadvantages of the prototype include the presence of mechanical drive transmissions, a large number of lasers, the need to use brush current collectors to power lasers located on a rotating rod, and sufficient bulkiness due to the use of capacious batteries and gear drives. In this case, the consumed energy is spent not only on powering the lasers, but also on the rotation of the drive electric motors. In addition, maintenance of the apparatus during use by one or two operators is necessary. The claimed device creates a horizontally scanning effect, however, there will be no continuous zone of laser radiation due to the insufficient speed of the vertical movement of the working body, and such a zone of laser radiation can be protected by electronic means.

The technical problem to be solved by the solution is to develop a compact device for passive protection against UAVs by blinding the video and infrared tracking devices of the UAV with a scanning laser beam that creates a two-dimensional raster.

The technical result consists in increasing efficiency while simplifying the design and expanding the functionality of the means for creating protection against UAVs.

The utility model is illustrated by drawings, where

fig. 1 illustrates the principle of raster formation,

Fig 2 - the claimed device in longitudinal section,

fig. 3 is a section along A-A of FIG. 2.

Positions in the drawings indicate:

1 - vertical scanning mirror;

2 - horizontal mirror;

3 - laser emitter;

4 - mirror drive 2;

5 - mirror drive 1;

6.- exit window;

7 - drive power driver;

8 - power supply;

9 - raster formation area;

10 - body.

The device comprises a housing 10, for example, in the form of a lamp or in any other convenient form, made of light metal or plastic. In the front part of the housing, there is an output window 6 for the laser beam generated from the laser 3 located in the housing. As a laser emitter 3, a semiconductor laser diode of continuous or pulsed action can be used. On the path of the laser beam, a horizontal scanning mirror 2 is installed, connected to the drive 4. Perpendicular to the oscillation axis of the plane of the horizontal scanning mirror 2, a vertical scanning mirror 1 is installed, connected to the drive 5. The scanning mirrors are fixed on the rotation axes of the drives and are integral with them. Drives with a laser are a galvanometric scanner (scanator).

The device of the scanning laser beam is an electromechanical drive for the formation of horizontal and vertical scanning of the laser beam. A beam reflected from a horizontally oscillating mirror forms a line. A line reflected from a vertically oscillating mirror forms a raster.

An electromechanical drive is an actuator that performs some kind of mechanical action when an electric current is applied to it. In this case, a galvanometer or an electromagnet.

The body of the product is divided in height into three parts - optical-mechanical, electronics unit, battery compartment.

The device works as follows. The beam from the laser is directed to the plane of the mirror 2 at an initial installation angle of 45°, which oscillates in the horizontal plane with a frequency of up to 10 kHz, forming a light line (light beam) on the mirror 1. Mirror 1, reflecting the light line and oscillating at a frequency of 24-50 Hz, forms a rectangular screen of continuous laser radiation, known as a two-dimensional raster (Fig. 1). With a deflection angle of the horizontal mirror within ± 4° at a distance of up to 2000 m, the width of the covered scanning area will be about 280 m.

Depending on the power of the laser, the range of confident formation of a two-dimensional raster sector is determined, if it enters, the video and infrared tracking devices of the UAV will automatically be blinded by the laser beam. Thus, the UAV ceases to be a threat even before it is visually or technically detected and eventually becomes lost to the operator.

At ranges up to 2 km, the spot area (raster) can be up to 80,000 m². Several devices installed along the perimeter with partial overlap of neighboring spots of illumination will create a sufficient barrier for the UAV. Any video cameras mounted on UAVs have a CMOS matrix that reacts to illumination, and illuminating the matrix with a laser beam will at least blind the camera. And with the power of laser modules up to 10 W, it can also lead to burnout of the pixels of the matrix. In any case, the performance of the camera will be lost. It is preferable to use lasers in the IR range with a wavelength of 750-1000 nm. The use of lasers of blue (405 nm), green (532 nm) and red (630 nm) radiation ranges is possible to solve the problems of suppressing the combat capability of enemy manpower by exposing the human eye to this radiation.

The advantages of the proposed device are the absence of operators, i.e. full autonomy, which is achieved by the presence in the electronic control circuit, frequency generators that control galvanometers. The device constantly scans its area of space in standby mode. The product does not detect an enemy UAV, it waits for an aircraft with video recording devices on board to cross the controlled area of space. And automatically blinds or even disables video devices. It has low power consumption (18600 rechargeable batteries). It can be used not only against UAVs, but also against live enemy forces with the same blinding effect. Especially effective against optical aiming devices. It can be used individually by soldiers and officers, as well as on any moving or flying equipment. Creates a zone of continuous laser radiation.

Claims (7)

1. A device for passive protection against aircraft, containing a laser radiation source and a two-dimensional raster formation unit, characterized in that it contains a housing with an exit window for accommodating a laser radiation source and a two-dimensional raster formation unit, while the two-dimensional raster formation unit includes two drives , a horizontal scanning mirror mounted on the optical axis of the laser radiation source, and a vertical scanning mirror located perpendicular to the plane of the horizontal scanning mirror, with each of the mirrors connected to a corresponding drive. 2. The device according to claim. 1, characterized in that the drive is made galvanometric. 3. The device according to claim 2, characterized in that the drive is equipped with an electronic control circuit for galvanometers with frequency generators. 4. The device according to claim 1, characterized in that the drive is a spatial angular scanner. 5. The device according to claim 1, characterized in that the drive is a scanner. 6. Device according to claim. 1, characterized in that the source of laser radiation is equipped with an optical collimator at the output to reduce the divergence of the laser beam. 7. The device according to claim 1, characterized in that the body of the product is divided into three parts in height - optical-mechanical, electronics unit, battery compartment.

Images