RU2672006C1 - Method of security monitoring of vantage ground - Google Patents

Abstract

FIELD: methods of security monitoring of area.

SUBSTANCE: invention relates to methods of security monitoring of area and can be used in cases of signaling control of vantage ground, movement along which is possible in any directions, detachable finders, determining the distance to the spot of rupture of microwire based on reflectometry method. Method consists in determining external borders of protected vantage ground in the form of rectangle; deployment of two detachable finders so that their microwires lay on two diagonals of this vantage ground; ensuring transfer of alerts from detachable finders on system of collecting and processing of information at breakage by violator of microwire; determination of waiting time for the second alert depending on the length of larger side of the rectangular vantage ground and the minimum possible speed of violator; transfer together with alerts from detachable finders to a system of collecting and processing values of lengths of microwires parts, remaining connected to detachable finder; application of algorithm for determining the trajectory of violator, in which trajectory is defined as a vector connecting the deployment scheme of detachable finder on the ground ends of microwire remaining connected to detachable finder; construction of vector, beginning of which is the end of microwire of detachable finder, which transmitted the alert first. Method includes a preparatory stage with deployment of microwire through vantage ground terrain according to established scheme and the main stage, which begins with the detection of violator and ends with the determination of its trajectory.

EFFECT: technical result of the invention is to obtain the possibility of determining trajectory of detected violator, reducing the length of deployed microwires, reducing time required for deployment of microwire on the ground.

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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 a terrain site, the movement of which is possible on either side, by means of detection (CO) that determine the distance to the point of breakage of the microwire (MP) based on the reflectometry method.

The task of security monitoring of equally accessible areas, where the movement of the offender is possible from either side of the site, is quite common. As a rule, the protection of such areas is carried out around the perimeter using CO with an extended linear part. For example, CO, which determines the distance to the place of MP breakage on the basis of the reflectometric method [1]. In the event of a MT breakdown, such a CO transmits an alarm signal to the information collection and processing system (SSOI), response forces upon arrival at the site take readings of the length of the remaining connected to the MP MP (the location of the MT breakage) from its indicator to clarify the location of the violation. That is, in the current practice of security monitoring using the considered JIs, the length of the remaining connected MP (the place where the MP is broken) indicated by them is used by the response forces only to reduce the search time for the cliff [2].

A known method of security monitoring of a site using two COs is to determine the external borders of the protected area in the form of a rectangle, to deploy MPs of two COs on the sides of the terrain with borders in the form of a rectangle so that the MPs of the first and second COs unfold L-shaped with a mirror displaying to each other, connecting the MP to the CO, ensuring the transmission of the alarm signal from the CO to the SSOI when the intruder breaks the MP; the arrival of the response forces to the site and taking readings of the lengths remaining connected to the SD MP from its indicator to clarify the location of the violation (Fig. 1) [3].

The disadvantage of this method is the inability to determine the directions of movement of the detected intruder, the increased consumption of the length of the deployed MP and the long deployment time of the MP on the ground.

The aim of the invention is to obtain the ability to determine the directions of motion of the detected intruder, reducing the length of deployed MP and reducing the time required to deploy MP on the ground.

To achieve this goal, a method of security monitoring of a site has been developed, which consists in determining the external borders of the protected site in the form of a rectangle; deployment of two RMs in such a way that their MPs lie on two diagonals of a given site of terrain; ensuring the transmission of alarm signals from CO to the SSOI in case of breakdown by the intruder MP; determining the waiting time for the receipt of the second alarm signal depending on the length of the larger side of the rectangular area and the minimum possible speed of the intruder; transmitting along with alarms from the CO to the SSOI the values of the lengths of the parts of the MP remaining connected to the CO; the application of the algorithm for determining the direction of movement of the intruder, in which the direction of movement is defined as a vector connecting the ends of the MP remaining connected to the CO on the deployment map of the MP on the ground; building a vector, the beginning of which is the end of the MP CO, transmitting the alarm first (Fig. 2-4).

The reduced MP consumption, in comparison with the known method, is achieved due to the proposed scheme, in which the MP is deployed along the diagonals of the terrain with borders in the form of a rectangle (Fig. 2). So, by analogy with the legs and hypotenuse of a right triangle, the sum of the lengths of the sides of the rectangle is greater than the sum of the lengths of the diagonals [4].

where a, b, c are the lengths of the larger, smaller sides and the diagonal of the rectangle, respectively, m.

In percentage terms, the decrease in the length of deployed MP, can be estimated as [4]:

where Δ is the value of reducing the MP consumption in the proposed method in comparison with the known,%.

Given the known angle of intersection of the MP (α) [4]:

where α is the angle of intersection of the MP, deg.

When the values of the angle of intersection of the MP from 70 to 90 degrees, the value of reducing the MP consumption is at least 28 percent (Fig. 5).

Considerable time is spent on the deployment of MP. According to the tactical and technical characteristics of discontinuous RMs, the average deployment rate of MP in the area is about 3 m / s [2]. In the known and proposed method, the deployment speeds are the same. Therefore, as the length of the deployed MP in the proposed method is reduced, the deployment time of the MP is reduced by the same amount (Fig. 5):

where Δt is the value of the time by which the deployment time has decreased,%.

When an intruder moves through a protected area, he sequentially crosses the MP of one CO, then another. The direction of movement of the intruder is defined as a vector. The beginning of the vector is the end of the MP, remaining connected to the CO, which transmitted the alarm first. The vector is directed to the end of the MP, remaining connected to the CO, transmitting the alarm second (Fig. 3, 4).

To eliminate output errors, the maximum value of the second alarm wait time (Tmax) is set, which is determined by the distance equal to the largest side of the terrain with the borders in the form of a rectangle (a), the minimum speed of a person and is taken with a margin of 1, 2:

where Tmax is the maximum value of the time of accumulation of alarm signals, s;

Vmin - the minimum speed of the intruder in the area, m / s.

The minimum possible speed of the intruder is taken on the basis of terrain conditions, this dependence is practically determined, known and confirmed on the basis of experimental studies (Fig. 6). [5, 6]

The method includes two stages: preparatory and main.

The preparatory phase includes:

1. The deployment of MP according to the established scheme and connection to the means 1 (2) detection with a transmitter (Fig. 2, 7).

2. Deployment on the ground SSOI, including a signal receiver 5, a timer control device 3, a timer 4, a decisive device 6 and a monitor 7 (Fig. 7).

3. The calculation of the maximum value of the wait time of the second alarm (Tmax) and its recording in the decisive device 6 (formula 5).

4. Writing to the device 6 the decisive algorithm for determining the direction of movement of the intruder (Fig. 4).

5. The start of the means 1 (2) detection with the transmitter in standby mode.

The main stage begins when the offender breaks off the MP CO, it includes:

1. The transition of the detection means 1 (2), with the transmitter to the alarm mode, transmission of the alarm signal and the length of the remaining part of the connected MP to it on the SSOI (Fig. 7).

2. Registration by the receiver 5 of the alarm signal from the means 1 (2) of detection with the transmitter, the start of the timer 4 by the timer control device 3, and the start of the countdown of the waiting time of the second alarm signal (Tmax) (Fig. 7).

3. Recording the length of the remaining part of the MP connected to the means 1 (2) of detection with the transmitter in the decisive device 6 (Fig. 7).

4. Break by the intruder MP on the means 2 (1) detection (Fig. 4, 7).

5. Registration by the receiver 5 of the second alarm signal from the detection means 2 (1) with the transmitter, the timer 4 being stopped by the timer control device 3 (Fig. 7).

6. Recording the length of the remaining part of the MP connected to the detection means 2 (1) with the transmitter to the decisive device 6 (Fig. 7).

7. The determination by the algorithm recorded in the decisive device 6 of the direction of movement of the intruder (Fig. 4).

8. Zeroing the timer 4 device 3 timer control. The output of the violation on the monitor 7 (Fig. 7).

The invention is illustrated by graphic materials, which represent:

- FIG. 1 deployment scheme MP in the known method of security monitoring of a site

- FIG. 2 scheme of deployment of MP in the proposed method of security monitoring of a site;

- FIG. 3 MP deployment scheme with examples of constructed directions of movement (vectors) of the intruder;

- FIG. 4 algorithm for determining the direction of movement of the intruder (decision table);

- FIG. 5 table of values for reducing the length of the MP and the time of their deployment, depending on the angle of intersection of the MP;

- FIG. 6 table of the intervals of the speed of the intruder, depending on the terrain;

- FIG. 7 is a structural diagram of the relationship of the devices used when implementing the method.

The technical result of the invention is the ability to determine the directions of motion of the detected intruder, reducing the length of deployed MP and reducing the time required to deploy MP on the ground.

Information sources

1. Disruptive detection tool "KSM-OS". Passport BAZHK. 425112.002 Substation. - 21 p.

2. 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.

3. 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.

4. Atanasyan, V.F. Geometry grades 7–9: Textbook - M .: Education, 2010-384 p.

5. Psarev, A. A. Military topography: Textbook. - M .: Military Publishing House, 1986 .-- 384 p.

6. Balenko, S.V. Survival School. - M., 1994 .-- 140 s.

Claims (1)

The method of security monitoring of a terrain site, which consists in determining the external borders of the protected terrain in the form of a rectangle, deploying microwires of two detection tools that use the reflectometric method of measuring the length of the microwire within the established boundaries of the terrain, ensuring the transmission of alarm signals from the detection means to the collection system and processing information when the intruder breaks the microwires; determining by means of detecting the lengths of the parts of the microwires remaining connected to them, characterized in that the microwires are deployed along two diagonals of the terrain with borders in the form of a rectangle; together with alarms from the detection means, the values of the lengths of the parts of the microwires remaining connected to the detection means are transmitted to the information collection and processing system; an algorithm is used to determine the direction of movement of the intruder, in which the direction of movement is determined as a vector connecting the ends of the microwires remaining connected to the detection means in the circuit of deploying microwires in the area; the beginning of the vector is the end of the microwire of the detection means that transmitted the alarm first; the waiting time for the second alarm is determined by the length of the larger side of the rectangular area and the minimum possible speed of the intruder.

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