RU2780146C1 - Method for remote installation of a combined security alarm - Google Patents

Abstract

FIELD: object security systems.

SUBSTANCE: invention is intended for use in the object security system for detecting a moving intruder. The burglar alarm means includes two means of detection and is based on two physical principles - radio wave and wire-wave. The radio wave principle of detection is to change the frequency of the received radiation depending on the speed of the deviation of the receiver relative to the transmitter. When it enters the intruder detection zone, the signal reflected from it with a changed frequency through the receiver enters the mixer, which compares both signals and, if a frequency difference is detected, it enters through a band-pass filter for further processing and generating an alarm signal. The wire-wave principle of operation of the detection means is based on registering a change in the parameters of the electromagnetic field when the object of detection acts on the volumetric detection zone created between the emitting and receiving wires of the sensing element, and converting this change into an electrical signal. The method for remote installation of a combined detection tool is carried out using a helicopter-type lifting unmanned aerial vehicle, the payload of which is a portable mining kit PMK that shoots KPOM-2 cassettes containing combined detection tools.

EFFECT: increasing the efficiency of mobile detection tools by increasing their noise immunity by combining two detection tools based on different physical principles of operation, as well as by quickly installing them remotely.

1 cl, 2 dwg

Description

The invention relates to technical means of protection, in particular to means of burglar alarms. The invention can be used as a means of detecting intruders in a protected area, the operation of which is based on two different physical principles of operation. Some physical principles are known, on the basis of which the detection means convert the impact of the detection object (intruder) on the detection zone or on the tool itself into an electrical signal, which is further processed and transmitted to the information collection tool as an alarm signal.

The technical result of the invention is the result, which consists in increasing the noise immunity of the detection means by using two different principles of operation and increasing the efficiency of its use due to remote installation using an unmanned aerial vehicle.

Known radio wave principle of operation of detection tools based on the Doppler effect, the essence of which is the dependence of the frequency of the received radiation on the speed of deviation of the receiver relative to the transmitter.

A wire-wave principle of operation of detection means is known, which is based on registering a change in the parameters of an electromagnetic field when an object of detection is exposed to a volumetric detection zone created between the emitting and receiving wires of the sensing element, and converting this change into an electrical signal.

Detection tools are used at security facilities in heated and unheated premises, in open areas on the street permanently. Mobile quick-deployed detection tools are also used, which are installed in open areas, in mountainous wooded areas, on surfaces with dense grass cover, bushes and in deep snow.

The disadvantage of mobile devices is their low noise immunity when used in deep snow, high grass cover and dense shrubs. Under these operating conditions, the detection tool will not provide the specified probability of detecting intruders, which will significantly reduce the detection efficiency. Also, the disadvantage of mobile detection tools is the lack of the possibility of remote installation, which makes it possible to significantly reduce the time and amount of human resources involved for these purposes.

The aim of the invention is to increase the efficiency of mobile detection tools by increasing their noise immunity by combining two detection tools based on different physical principles of operation, as well as due to their rapid remote installation.

To achieve this goal, a scientific problem is solved - the invention of a combined detection tool based on various physical principles of operation, the delivery and installation of which is carried out using a lifting unmanned aerial vehicle. Prototypes were selected for further development - known means of detection: the Agat SP5U radio wave principle of operation (USDP operation manual. 425144.003 RE, YuMIRS Firm CJSC) and the wire-wave principle of operation (according to patent RU 2157563C1).

The principle of operation of the "Agat SP5U" tool is based on the method of linear frequency modulation, widely used in radar, where the operating frequency of the generator changes linearly within small limits. The microwave transmitter of the transceiver module radiates electromagnetic oscillations in the direction of the protected area, which, being reflected from the target and surrounding objects, fall on the microwave receiver of the transceiver module. Changes in the received signal caused by the Doppler effect when the intruder moves in the detection zone are amplified and processed according to a given algorithm. If these changes exceed the threshold value, an alarm is issued by the detector.

The principle of operation of a wire-wave tool is based on registering a change in the electromagnetic field created in the space between the transmitting and receiving cables (wires) when the intruder crosses the detection zone formed along the wire line.

One of the radiating cables (wires), connected to the transmitter and hereinafter referred to as the transmitting one, creates an electromagnetic field along the controlled boundary, the change of which when crossing the boundary is recorded by means of another receiving cable (wire) connected to the receiver and further called the receiving one.

A change in the electromagnetic field is emitted by the receiver in the form of an electrical signal, based on the results of the analysis of which an "Alarm" signal is generated in the processing unit.

The problem is solved by the fact that the radio wave and wire-wave detection means are placed in one cylindrical housing made of durable radio-transparent plastic. In the lower part of the housing, there is a battery in the form of an accumulator battery, a receiving-transmitting unit and a signal processing unit of a wire-wave detection tool, above which there is a microwave receiving-transmitting device and a microstrip antenna of the Agat SP5U radio wave detection tool. In the upper part inside the housing there is a radio transmitter of signals for actuation to the means of collecting and displaying information. In the upper part of the case outside under the cover there is a target sensor unit used in a well-known device - an anti-personnel fragmentation mine of circular destruction POM-2 ("Means of destruction and ammunition": Textbook / A.V. Babkin, V.A. Veldanov, E.F. Gryaznov et al., edited by V. V. Selivanov, Moscow: Bauman Moscow State Technical University, 2008, p. 296). The target sensors of the POM-2 mine are anchors with threads scattered to the sides at a distance of up to 10 meters by triggering an expelling pyrotechnic charge. Instead of the threads of the target sensors of the POM-2 mine, a two-wire microwire is used as a sensitive element of the wire-wave detection tool. A two-core microwire consists of two strong copper wires 25 micrometers thick, insulated with varnish. One core of the microwire is emitting, connected to the transmitting device of the wire-wave detection means, the second is receiving, connected to the receiving device of the wire-wave detection means. In the lower part of the body outside there is a device for stabilizing the known POM-2 mine, which is a spring-loaded folding legs, which, under the action of springs, fold to the sides horizontally and hold the body in a vertical position. The stabilization device is triggered when the detection means is dropped from the load-lifting unmanned aerial vehicle.

In the invention, the wire wave detection means will be the wire wave detection channel of the combined means, the radio wave detection means will be the radio wave channel.

In cases of using a combined detection tool on a terrain with a high grass cover and (or) in a bush (small forest), grass, bushes and small trees will interfere with the operation of the radio wave detection tool, greatly distorting the detection zone. Compensation for this kind of interference will be the use of a wire-wave detection tool, the sensitive element of which will be a two-core microwire, around which a three-dimensional detection zone is formed. For a wire-wave detection tool, grass, bushes and small trees will not interfere, since the sensitive elements after the target sensor is triggered will be located on top of them.

The detection of the intruder is carried out according to the logical scheme "OR", in cases of operation of at least one detection channel. Transmission of actuation signals to the means of collecting and displaying information is carried out through a radio transmitter over a radio channel at frequencies that allow establishing stable radio communications at specified distances.

The method of remote installation of a combined detection tool is carried out using a helicopter-type cargo-lifting unmanned aerial vehicle, the payload of which is a well-known device - a portable mining kit PKM (Manual for remote mining in an operation (combat) / Edited by M. Karagodin. - M .: Military Publishing House, 1986), designed for remote mining of the area using the known POM-2 mines located in the KPOM-2 cassette (Guide to remote mining in operation (combat) / Edited by M. Karagodin. - M .: Military publishing house, 1986 ). Automatically or at the command of the operator, the unmanned aerial vehicle takes off from the launch pad and moves along the route to the place where the detection means are installed. At the moment it is in the set coordinates, the operator transmits a control signal to trigger the mining kit by igniting the expelling charge through the electric igniter from the electric current of the unmanned aerial vehicle battery. In the KPOM-2 cassette, instead of the POM-2 mines, combined detection tools in the amount of 4 pieces are placed. After the mining kit is triggered, detection tools are ejected from the cassette under the action of powder gases of an ignited expelling charge. The stabilization device in the form of spring-loaded tabs ensures the correct installation of the detector on any surface. After installing the combined detection means, the target sensor is triggered, the anchors with the microwire are thrown to the sides. In the presence of bushes or small trees, the microwire is on top of them. After the target sensor is triggered, two channels of the detection tool and a radio transmitter are automatically turned on to establish communication with the means of collecting and displaying information.

The essence of the invention is illustrated by drawings.

In FIG. 1 shows a general view of the combined detection tool in section. In the housing (4) there is a radio transmitting device (5), a microstrip antenna (6) and a microwave receiving and transmitting device (7) of a radio wave detection tool, a receiving and transmitting unit (8) and a signal processing unit (9) of a wire-wave detection tool, battery (10). On top of the housing (4) under the cover (1) there is a block of target sensors representing anchors (2) with microwires (3) attached to them. In the lower part of the body (4), folding tabs (12) of the stabilization system are attached from the outside, leaning back due to springs (11).

In FIG. 2 shows a diagram of the installation of a combined security alarm, where the body (4) with the help of folding legs (12) of the stabilization system is on the surface in a horizontal position, anchors (2) and microwires (3) are scattered to the sides on open ground and over bushes.

Claims (1)

A combined security alarm device, containing a cylindrical body made of radio-transparent plastic, inside which radio wave and wire-wave detection means are placed, in the lower part of the body there is a battery in the form of a battery, a receiving-transmitting unit and a signal processing unit of the wire-wave means detection, over which a microwave transceiver and a microstrip antenna of a radio wave detection means are located; in the upper part inside the case there is also a radio transmitter of signals for triggering the means of collecting and displaying information, also in the upper part of the case outside under the cover there is a block of target sensors, which are anchors with two-core microwires, while one core of the microwire is emitting and connected to the receiving the device of the wire-wave detection means; in the lower part of the body, there is a stabilization device on the outside, which is a spring-loaded folding tabs, which, under the action of springs, fold to the sides horizontally and hold the body in a vertical position.

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