RU2707908C1 - Method of security monitoring using linear radio-wave detection means - Google Patents

Abstract

FIELD: monitoring systems.

SUBSTANCE: invention relates to security monitoring methods of area. Method consists in deploying in place of convergence of three roads in one of two detection means (DM) according to a scheme providing separation of useful signal with different depth and modulation sign in receiver (PRM) of each facility when crossing security zone (SZ) by intruder and application of corresponding algorithm, which determines movement of intruder on each of four roads convergence point by number of DM, issued alarm signal, indicating unit (units) of threshold, which registered useful signal, and by obtained combination of two roads, on which intruder was detected.

EFFECT: enabling detection of all twelve directions of intruder displacement through the point of convergence of three roads into one.

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Description

The invention relates to methods for security monitoring of the terrain and can be used in cases of signaling control of the place of convergence of three roads into one linear radio wave detection means (CO), when it is necessary to determine the direction of movement of the intruder.

Often the route of the intruder on the ground passes through the existing road network. Therefore, significant attention is paid to the signal cover of the road network. For response forces, information about the direction of movement of the intruder is most important, allowing you to significantly narrow the direction of his search and thereby increase the likelihood of detection and detention [1]. In practice, to solve this problem, linear radio wave detection means are widely used, characterized by an extended detection zone (AO) - from 50 to 200 meters [2, 3]. One of the most frequently encountered elements of the road network is a fork in the road — a place where two roads converge into one [4, 5].

A known method of security monitoring of a fork in the road using a linear radio wave detection means that allows you to separately define two through roads along which the detected intruder moves. The method consists in deploying SD according to the scheme in which its DA crosses two forks converging into one road; providing the deployment circuit with a means for isolating a useful signal with different modulation depths at the receiver (PFP) when the intruder crosses the AO: a signal in the form of a single negative ejection of a large modulation depth when the intruder crosses the AO near the PFP and a signal in the form of a sequence of alternating positive and negative emissions of a small modulation depth - when crossing the middle of the DA; placing the PFP means at a distance of not more than 5-10 meters from one road, the transmitter (PX) - at a distance equal to half the length of the roadside (± 10 meters) from the other road; subsequent control by means of a fork in the road; the formation of an alarm by a large threshold block when an AO means is crossed by an intruder near a PFP; the formation of an alarm by blocks of a small and positive threshold when the intruder crosses the AE in the middle; transmitting the PfP funds to the alarm information collection and processing system (SSOI) with an indication of the threshold block that formed it; ensuring the reception of alarms from the PFP means of the SSOI and their accumulation during the set time; the application of the algorithm for determining the direction of movement of the intruder through the fork in the road based on comparing data on the threshold block or combination of blocks indicated by the CO with the alarm signal with the a priori known scheme of the deployment of CO at the fork in the roads [6].

Another most common, but more complex element of the road network is the convergence of three roads into one. The number of directions of the intruder’s movement through it, compared to the place where two roads converge in one, is twice as much (twelve compared to six). The application of the known method for its security monitoring does not allow to determine all twelve directions of movement of the intruder.

The aim of the invention is to obtain the ability to determine all twelve directions of movement of the offender through the convergence of three roads into one using the minimum amount of CO.

To achieve this goal, a method for security monitoring of the place of convergence of three roads into one by linear radio wave detection means has been developed, consisting in the deployment of two COs according to a scheme that provides the selection of a useful signal with different depths and a modulation sign in the PFM of each means when the SC crosses the intruder: a signal in the form of a single a negative ejection of a large depth of modulation when an intruder crosses an AE near an Rx (Rx) or a signal in the form of a sequence of alternating positive and negative spruce emissions of small depth of modulation at the intersection of the middle of the AO; placing the detection zone of each of the means in such a way that it intersects two different adjacent roads of the convergence point; the receiver of each vehicle is located at a distance of no more than 5-10 meters from one road, the transmitter at a distance equal to half the length of the detection zone (± 10 meters) from another road at the place where three roads converge into one; transmission by receivers of means to the SSOI of an alarm signal indicating the number of the means and the threshold block that registered the useful signal; providing reception of alarm signals from receivers of SSOI means; application in the SSOI of an algorithm that determines the movement of the intruder along each of the four roads, the convergence point by the number of the CO that issued the alarm, indicating the block (s) of the threshold that registered the useful signal; in the determination by the algorithm in the future, the direction of movement of the intruder through the place of convergence of three roads into one according to the obtained combination of two roads on which the intruder was discovered (Fig. 1, 2).

It is known that the useful signal emitted by the PFR CO is the amplitude modulation of the reference signal due to the intersection of the AO by the intruder and differs depending on the place of its intersection [7]:

- when crossing the middle of the GZ (± 10 meters) - a useful signal with a small modulation depth and negative and positive signs is recorded by blocks of small and positive thresholds;

- at the intersection of AE in the area near (up to 10 meters) the PFR (PFD) - a useful signal with a large modulation depth and a negative sign is recorded by a large threshold block.

The proposed scheme for deploying detection tools allows you to obtain from them and subsequently use for processing in the SSOI according to a given algorithm two types of unique features:

- first of all, this is the number of the CO that issued the alarm, indicating the block (s) of the threshold that registered the useful signal that identifies one of the four roads of the convergence point along which the intruder moves;

- subsequently, it is a combination of two roads of the convergence point along which the intruder moves, defining one of the twelve directions of his movement (Fig. 2).

The method includes two stages: preparatory and main.

Preparatory stage:

1. The deployment on the ground of the system 19 for collecting and processing information (Fig. 3).

2. Deployment at the convergence point of three roads into one detection means, including: a transmitter 3 (11) of a detection means and a receiver consisting of an amplifier 4 (12), a bandpass filter 5 (13), a detector 6 (14), block 7 (15) large threshold, output 8 (16) of the interface, block 9 (17) of the small threshold, block 10 (18) of the positive threshold according to the established scheme (Fig. 2, 3).

3. Writing to the memory of the system 19 for collecting and processing information of the algorithm for determining the road of the convergence point along which the intruder moves and its direction of movement (Fig. 2).

The main stage begins when the offender moves through the place of the convergence of three roads into one and gets him into the AO of one of the means. It includes:

1. Isolation by the detector 6 (14), amplification by the amplifier 4 (12) and filtering by the filter 5 (13) a band-pass useful signal when crossing the detection zone by the intruder (Fig. 3).

2. Analysis of the depth and modulation sign of the useful signal from the detector 6 (14) to the large threshold block 7 (15), the small threshold block 9 (17), and the positive threshold block 10 (18) (Fig. 3).

3. Registration of the useful signal by block 9 (17) of the small threshold and block 10 (18) of the positive threshold in the event that the intruder crosses the middle 30 or block 7 (15) of the large threshold in the case of crossing the DA in the area near the PFP or the traffic control (Fig. 3).

4. Transmission of an alarm indicating the number of the tool and the block (s) of the threshold that registered the useful signal with the output 8 (16) interface to the information collection and processing system 19 (Fig. 3).

5. Determination by the system 19 of information collection and processing of the first road of the convergence point along which the intruder moves by number СО and the indicated block (s) of the threshold that registered the useful signal in accordance with a given algorithm (Fig. 2, 3).

6. Isolation, analysis of the depth of modulation, registration of the useful signal, transmission of the alarm signal to the information collection and processing system 19 at the second intersection of the detection zone of one of the means by the intruder (Fig. 1, 2).

7. The system 19 for collecting and processing information on the second road determines the convergence point along which the intruder moves (Fig. 1, 2).

8. The system 19 determines the collection and processing of information, the direction of movement of the intruder through the place of convergence of three roads on the received combination of two roads, the convergence point along which he moves in accordance with a given algorithm (Fig. 1, 2).

8. Zeroing the memory of the system 19 for collecting and processing information (Fig. 3).

The invention is illustrated graphic materials, which are presented on:

- FIG. 1 is a deployment diagram of linear radio wave detection means in the proposed method;

- FIG. 2 - an algorithm for determining the road of the place of convergence of three roads along which the intruder moves and the direction of his movement in the proposed method;

- FIG. 3 is a structural diagram of the relationship of the devices used in the implementation of the method.

The technical result consists in obtaining the ability to determine all twelve directions of movement of the offender through the convergence of three roads into one using the minimum amount of CO.

Information sources

1. Shumov VV The use of mathematical methods and models to justify decisions on the protection of the state border: Scientific and practical manual. - Part 2. - M .: Education, 1996. - 196 p.

2. Korshnyakov V.G. Signaling means of protection of local areas: uc. allowance / V.G. Korshnyakov - Kaliningrad: KPI of the FSB of the Russian Federation, 2004 .-- 135 p.

3. Marshalov T.A. Technical means of border protection: textbook / T.A. Marshalov, A.V. Gustov, I.M. Potapov. - Kaliningrad: KPI of the FSB of the Russian Federation, 2009 .-- 568 p.

4. Psarev A.A. Military Topography: Textbook. - M .: Military Publishing House, 1986 .-- 384 p.

5. Ganshin V.N., Khrenov V.S. Tables for the breakdown of circular and transitional lines. - K .: 1974. - 432 p.

6. Pat. No. 2648210, Russian Federation, IPC G08B 1/00. A method for monitoring bifurcation of roads using a linear radio wave detection means / S.A. Udot, A.V. Rubanik - No. 2017105966; declared 02.21.17; publ. 03/22/18, Bull. No. 9.

7. Dolukhanov M.P. Radio wave propagation: Textbook - M .: Svyazizdat, 1960. - 391 p.

Claims (1)

A security monitoring method using linear radio wave detection means, which comprises providing a deployment scheme for a useful signal with a different modulation depth at the receiver when the intruder crosses the detection zone: a signal in the form of a single negative ejection of a large modulation depth when the intruder crosses the detection zone near the receiver or transmitter and signal in the form of a sequence of alternating positive and negative emissions of small depth of modulation - when esechenii middle of the detection zone; placing the receiver of the vehicle at a distance of no more than 5-10 meters from one road, the transmitter at a distance of no more than 10 meters from the middle of the detection zone from another road, the places where the roads converge into one; registration of the useful signal by the large threshold block when crossing the detection zone of the means by the intruder near the receiver or transmitter; registering the useful signal with blocks of a small and positive threshold when the intruder crosses the middle of the detection zone; the transfer by receivers of funds to the alarm information collection and processing system indicating the threshold block that registered the useful signal; providing reception of alarm signals from receivers of means by a system for collecting and processing information, characterized in that two detection means are deployed at the place of convergence of three roads into one; the detection zone of each vehicle crosses two different adjacent roads of the convergence point; in the information collection and processing system, an algorithm is used that determines the movement of the intruder along each of the four roads of the convergence point by the number of the detection means that issued the alarm, indicating the block or blocks of the threshold that registered the useful signal; further, the algorithm determines the direction of movement of the intruder through the place of convergence of three roads into one according to the obtained combination of two roads on which the intruder was discovered.

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