RU2656837C1 - Method of security monitoring of trail - Google Patents

Abstract

FIELD: monitoring systems.

SUBSTANCE: invention relates to security monitoring methods of a trail. Method consists in deploying a detection means so that its detection zone crosses the path at two sites on both sides of the bend point of a trail; establishment of a gap between the lower boundary of the detection zone and the trail of at least 0.6 m in the area closest to the detection means; setting the maximum value of the accumulation time of alarms based on the minimum possible human speed and distance, it passes between the intersections of the detection zone and the trail; application in the system of data collection and processing algorithm, recognizing the reason for the transition of the detection means to the alarm mode according to the number of the received alarms within the set time of signal accumulation.

EFFECT: technical result is the ability to recognize alarms when a person is detected, moving along the trail, from false alarms when medium-sized animals are detected using only one detection means.

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Description

The invention relates to methods for security monitoring of the trail and can be used in cases of using one passive optoelectronic infrared (CO) detection means for signaling control of the bend of the trail in conditions when false alarms can be received when crossing medium-sized animals of its detection zone ( DA).

A significant part of the road network in sparsely populated areas is made up of trails that a person (intruder) uses for his movement [1]. In such an area, the main cause of false alarms from COs is the crossing of the AU by medium-sized animals. The possibility of recognizing alarms when detecting a CO of a person moving along a trail from false alarms when detecting a CO of medium-sized animals makes it possible to exclude additional departures of the response forces to clarify the causes of an alarm and is of great importance in organizing security monitoring. [2, 3]

Modern SOs use a double pyroelectric converter that responds to thermal radiation of the infrared range. The optical system WITH forms two pseudo-volumetric AOs located quite close to each other, due to this they can be combined into one common AO. Thermal radiation from the infrared range from any objects with a temperature above the background that crosses the general AO is incident on a pyroelectric converter, which allows the CO to generate an alarm. Linear SSs used on the ground have a cone-shaped detection zone (30) with an aperture angle (a) of up to 5 degrees and a length (I) of up to 100 meters. Therefore, the clearance between the lower boundary of the GZ and the earth's surface is different and depends on the height of the installation of CO and the distance from the CO itself (Fig. 1). At the intersection of AO WITH small animals, with dimensions in height of up to 0.2 meters, an alarm signal is not generated. [4, 5]

Most often the occurrence of false alarms from CO is caused by animals of medium size, whose geometric dimensions are: in height up to 0.6 meters and in length up to 1 meter. Typical geometric dimensions of a person are: in height from 1.4 to 2.1 meters and in width to 0.3 meters (figure 2). [2, 3, 4, 5]

There is a method of security monitoring of the trail, in which to monitor objects moving along it, one CO is used. AO CO once crosses a path, at the intersection of AO with a trail, a clearance of at least 0.6 meters is established between the lower boundary of the AO and the earth's surface, registration of a system for collecting and processing information (MTR) of alarms from CO (Fig. 3) is provided. [6]

There is another way of security monitoring of the trail, in which to recognize false alarms from medium-sized animals, the trail is controlled by two CO 1 and CO 2. AOC of each CO 1 and CO 2 crosses the trail once, in two sections, a gap is established between the lower boundary ZO and the trail in these areas is not less than 0.6 meters, registration is provided by the SSOI of alarm signals from CO 1 and CO 2 (Fig. 4). [5, 6]

Using the first known method of security monitoring of the trail does not allow to exclude the receipt of false alarms from the CO if they cross the AO outside the path, where along its greater length the height of the lower border of the AO above ground level is much lower than 0.6 meters (Fig. 3) .

Using the second method of security monitoring of the trail allows you to recognize alarms from CO 1 and CO 2 when a person is moving along the trail (there will be two alarms) from false alarms when detecting medium-sized animals crossing the CO of one of CO 1 or CO 2 outside paths (there will be one alarm signal), but its implementation requires two CO 1 and CO 2 (Fig. 4).

The aim of the invention is to enable recognition of alarms when detecting a person's CO moving along a trail from false alarms when detecting a medium-sized animal with a single-source CO.

Any trail passing through a site is not absolutely straight, one of the most common elements of the road network is the bend of the trail (arched turn, curvature of the trail - consisting of two adjacent straight sections of the trail connected by a circular curve). [one]

To achieve this goal, a method of guarding monitoring of the trail has been developed, which consists in deploying the SO so that its detection zone crosses the trail in two sections on both sides of the bend point of the trail; establishing a clearance between the lower boundary of the detection zone and the path (F _A ) of at least 0.6 meters in the area closest to the detection means; establishing the maximum value of the accumulation time of alarm signals based on the minimum possible speed of a person and the distance traveled by him between the sections of the intersection of the detection zone and the path; application in the SSOI of an algorithm that recognizes the reason for the CO to go into alarm mode by the number of received alarms within the set alarm accumulation time: two alarms — movement along a person’s path, one alarm — intersection of the detection zone with medium-sized animals or false detection other reasons (Fig. 5).

When deploying SD according to the developed scheme, when a person (intruder) moves along the trail on the SSOI, two alarm signals come from the SS; and from an animal with a height of up to 0.6 meters, moving along a path or crossing a crossroads in any other place, no more than one alarm signal is received at the SSOI (Fig. 6).

The clearance between the lower boundary of the GZ and the path is ensured by choosing the height of the installation of CO (Fig. 6):

where H is the installation height of CO from the surface of the earth, m;

L is the distance from the CO to the first section of the intersection with the pathway, m;

α - aperture angle ЗО СО, m.

According to formula 1, for the distance from CO to the first section of intersection 30 with the path (L) equal to 10 meters, the aperture angle of 30 ° CO (α) equal to 5 degrees, the height of the installation of CO from the earth's surface will be 1.04 meters (Fig. 1 , 6).

To eliminate recognition errors, the maximum value of the time of accumulation of alarm signals (7) is set, which is determined by the distance between two sections of the intersection of the AO CO with the path, the minimum speed of a person and is taken with a margin of 1.2 (Fig. 5). The calculation is made according to the formula:

where T is the maximum value of the accumulation time of alarms, s;

V _MIN - the minimum speed of a person through the bend of the path, m / s;

A'O 'is the distance between the peak of the bend of the trail and the first section of the intersection of the west coast with the trail, m;

O'B 'is the distance between the top of the bend of the path and the second section of the intersection of the GW WITH the path, m

The minimum possible speed of a person’s movement is taken on the basis of terrain conditions, this dependence is practically determined, known and confirmed on the basis of experimental studies (Fig. 7). [7]

Alarms from the CO are transmitted to the SSOI, in which an algorithm is used that recognizes the cause of the transition of the CO to the alarm mode by the number of received alarms within the set alarm accumulation time: two alarms — movement along a person’s path, one alarm — intersection of the AO by medium size animals (Fig. 8).

The method of security monitoring of the trail includes two stages: preparatory and main.

Preparatory stage:

1. Calculation of the installation height (N) of the detection means 1 from the surface of the earth (formula 1).

2. Deployment of the detection means 1 according to the established scheme (Fig. 5, 6).

3. Deployment on the ground of a system for collecting and processing information, including: a signal receiver 3, a timer control device 4, a timer 5, a decisive device 6, a monitor 7 (Fig. 9).

4. Calculation in the system for collecting and processing information of the maximum value of the accumulation time of incoming alarm signals (T) and recording it in the timer control device 4 (formula 2).

The main stage begins when the object moves through the bend of the path and gets into the detection zone of the detection tool, it includes:

1. Formation by the means 1 for detecting an alarm signal when an object crosses its detection zone, and transmitting it to the information collection and processing system. The transition means 1 of the detection in standby mode when the object leaves its detection zone.

2. Registration by the receiver 3 of the first alarm signal from the detection means 1 when the object crosses its DA, the device 4 starts the timer control - timer 5, the start of the countdown of the accumulation of alarms (Δt).

3. The accumulation of alarms and reaching the accumulation time of alarms (Δt) of the maximum value (T) (Fig. 8).

4. The decisive device 6 uses an algorithm that recognizes the cause of the transition of the detection means 1 to the alarm mode by the number of received alarm signals within the set signal accumulation time (Fig. 8):

two alarms - movement along a person’s path; one alarm is the intersection of the detection zone with medium-sized animals.

5. Zeroing the device 4 timer control - timer 5 (Fig. 9).

6. The output to the monitor 7 (Fig.9).

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

- FIG. 1 - the shape and geometric dimensions of the detection zone of the passive optoelectronic detection means (side view);

- FIG. 2 - geometric dimensions of some medium-sized animals and humans;

- FIG. 3 is a deployment diagram of a passive optoelectronic detection means in a known security monitoring method for a trail using one CO (top and side views);

- FIG. 4 is a deployment diagram of a passive optoelectronic detection means in a known security monitoring method for a trail using two COs (top and side views);

- FIG. 5 is a deployment diagram of a passive optoelectronic detection means in the proposed method for security monitoring of the trail, indicating the size;

- FIG. 6 - variants of the intersection by a person and a medium-sized animal of the detection zone of the passive optoelectronic detection means in two sections, indicating the size;

- FIG. 7 is a table of ranges of speeds of a person (intruder) in various parts of the terrain;

- Fig. 8 is a table (algorithm) recognizing the reason for the transition of the detection means to the alarm mode by the number of received alarm signals within the set accumulation time of the signals;

- FIG. 9 is a structural diagram of the relationship of the devices used when implementing the method of security monitoring of the trail.

The technical result consists in the possibility of recognizing alarms when detecting the SD of a person moving along a path from false alarms when detecting the SD of animals of average size using only one CO.

Information sources

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

2. Korytin S.A. The habits of wild animals: - M .: Agropromizdat, 1986. - 102 p.

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

4. 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.

5. 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.

6. Radio signaling device infrared RS-IR. Operation manual PAUR.425152.1000RE. - M .: LLC Polyus-ST, 2016. - 27 p.

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

Claims (1)

The method of security monitoring of the trail, which consists in monitoring the trail with one passive optoelectronic detection means; establishing a clearance between the lower boundary of the detection zone of the agent and the path of at least 0.6 m; in ensuring registration by a system for collecting and processing information of signals from the detection means, characterized in that the detection means is deployed on the bend of the path so that its detection zone intersects the path in two sections on both sides of the bend point of the path; a clearance is established between the lower boundary of the detection zone and the path of at least 0.6 m in the area closest to the detection means; sets the maximum value of the accumulation time of alarms based on the minimum possible speed of a person and the distance traveled by him between the sections of the intersection of the detection zone and the path; The information collection and processing system uses an algorithm that recognizes the reason for the detection tool to go into alarm mode by the number of received alarm signals within the set alarm accumulation time: two alarms - movement along a human path, one alarm - the intersection of the detection zone with medium-sized animals.

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