RU2605507C1 - Method for signalling coverage of local area with road - Google Patents

Abstract

FIELD: roads.

SUBSTANCE: invention relates to methods for signalling coverage of local area with a road and can be used in cases of use of wire-wave or seismic detection means with an extended linear part (ELP) for signalling coverage of roads and paths of their bypass. Method comprises deploying ELP of one detection means on an area such that it lies across road and bypass paths on right and left, as well as section length, 10 times greater than width of detection zone of detection means, lies along road in close proximity to it so that road is in detection zone throughout length of this section, issuing alarm signal of detection means upon observing offender in detection zone, and determining point of intrusion - movement of offender on road or bypass thereof using an algorithm, which establishes duration of obtained alarm signal from detection means to one of two non-overlapping ranges of time intervals, calculated analytically for each point of intrusion with due allowance for maximum and minimum possible speed of offender, width of detection zone, length of ELP, deployed along road, and time of transition of detection means to standby mode after offender exits detection zone. Method includes a preparatory step with deployment according to developed scheme of ELP of detection means on local section of area with road and a main step, which begins with detection of offender and ends with determination of point of intrusion (movement of offender on road or bypassing it).

EFFECT: technical result consists in determining point of intrusion of local area with road (movement of detected offender on road or bypassing it) using only one detection means.

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Description

The invention relates to methods for signaling cover of a local area with a road and can be used in cases where a wire-wave or seismic detection means (CO) with an extended linear part (PLC) is used for signaling covering a road and ways to bypass it.

As a rule, the intruder builds the route of his movement taking into account the existing network of roads on the ground. It moves either along the road itself, or along it at a safe distance from it (bypassing) [1]. Therefore, considerable attention is paid to the signal cover of roads and ways to bypass them. In many respects, the success of apprehending an intruder depends on the knowledge of the response forces of the location of the violation of the local site with the road (the movement of the detected intruder along the road or bypassing it).

There is a method of signaling the cover of a local area with a road, which consists in deploying the PLC SO so that it lies across the road and its bypass paths to the right and left. CO generates an alarm when the intruder crosses its PLC (Fig. 1). This method allows only to detect the offender without specifying the location of the violation.

In known methods in which the intruder is detected and the location of the violation is determined, at least two COs are used. (Fig. 2, 3) [2, 3].

The aim of the invention is to obtain the ability to determine the place of violation of a local area with the road (the movement of the detected intruder on the road or bypassing it) using only one WITH.

To achieve this goal, a method has been developed consisting in deploying a PLC of one SO in a terrain, so that it lies across the road and its bypass paths to the right and left, as well as a section 10 times the width of the detection zone (AO) of the CO itself , lay along the road in the immediate vicinity of it so that the road was in the AE along the entire length of this section, issuing a CO alarm when an intruder appeared in the AO and determining the place of violation - the offender’s movement along the road or bypassing it using m of the algorithm establishing the belonging of the duration of the received alarm signal from the CO to one of two disjoint ranges of time intervals calculated analytically for each of the places of violation taking into account the maximum and minimum possible speeds of the intruder, the width of the protector, the length of the PLC section deployed along the road, and the time of the transition of the CO to standby after the intruder exits the AO (Fig. 4).

Passing along the road or bypassing it to the right (left), the intruder enters the AO CO (Fig. 4, 5). Thanks to the specially developed PLC deployment scheme, the place where the intruder crosses the PLC CO (on the road or bypassing it) can be determined by the duration of the received alarm from the CO.

So, a walking intruder moves at a speed, the limits of which depend on the time of day, type of terrain and weather conditions. The limits of these speeds are practically determined, known and confirmed on the basis of experimental studies [4-6]. In the proposed method, to increase the reliability of determining the location of the violation and simplify the calculations, an extended speed range is taken, so the upper speed value (V _max ) is taken to be 5.0 km / h (1.39 m / s), the lower value (V _min ) is 1, 0 km / h (0.28 m / s).

The geometric dimensions of the signal line are set in such a way that the section lying along the road (L) is 10 times longer than the width of the ZO PLC (N), which the intruder crosses across when moving around (Fig. 6). Then, taking into account the five-fold excess of the maximum possible speed of the intruder (V _max ) over the minimum (V _min ) and a constant time for the CO to enter standby mode after the intruder leaves his detection zone (t _dr ), the minimum duration of the alarm signal when the intruder moves along the road (t _{(L) min} ) will always exceed the maximum signal duration (t _{(H) max} ) when the intruder moves around the road:

where L is the length of the PLC WITH, deployed along the road, m;

N is the width of the CO detection zone, m

V _max , V _min - the maximum and minimum value of the speeds of movement of the intruder, m / s;

t _dr ^_ time of establishing CO in the standby mode after the intruder leaves the detection zone, s;

t _{(H) max} - the maximum duration of an alarm when an intruder crosses a section of the PLC CO lying to the right (left) of the road, s;

t _{(L) min} - the minimum duration of the alarm signal when the intruder moves along a section of the road along which the PLC CO is deployed, s.

Taking into account the time of establishing the CO in the standby mode (t _dr ) after the intruder exits the AO, the limiting values of the alarm duration intervals formed by the AO when the intruder is in the AO CO are found by the formula:

where t _{(H) min} is the minimum duration of the alarm signal when the intruder crosses the section of the PLC CO lying to the right (left) of the road, s;

t _{(H) max} - the maximum duration of an alarm when an intruder crosses a section of the PLC CO lying to the right (left) of the road, s;

t _{(L) min} - the minimum duration of the alarm signal when the intruder moves along a section of the road along which the PLC CO is deployed, s;

t _{(L) max} - the minimum duration of the alarm signal when the intruder moves along a section of the road along which the PLC CO is deployed, s.

Currently, the technique of fuzzy inference is widely used in technology [3, 7]. Following it, the considered time intervals can be represented graphically in the form of a trapezoidal membership function, which shows that a specific distance H or L, an intruder can travel for a certain period of time, which has a lower value (b) (at a maximum speed V _max ) and an upper value (c) (at minimum speed V _min ). Within these limits, confidence in the reliability of the conclusion (µ) that a maximum distance L or H could be covered is equal to unity. At smaller (from (a) to (b)) or large (from (c) to (d)) values of time, confidence in the reliability of the conclusion (μ) that the distance H or L has been traveled is less than unity (Fig. 7) :

where t _(H) are the parameters of the graph of the membership function of the alarm duration when the intruder crosses the section of the PLC CO lying to the right (left) of the road, s;

t _(L) - parameters of the graph of the membership function of the alarm duration when the intruder moves along a section of the road along which the PLC CO is deployed, s.

So, if an alarm signal from CO with a duration of (t) is received, it is necessary to postpone it along the abscissa axis and determine the location of the violation through the points of intersection with the graphs of the membership functions (traffic along the road or traffic bypassing it) (Fig. 7).

Thus, the two possible places of violation of the guarded line: the movement of the offender on the road or the movement around it correspond to non-intersecting time intervals, within which the duration of the alarm from CO can lie, which allows us to conclude with high reliability (µ) the location of the violation local area with road.

The method includes two stages: preparatory and main.

The preparatory phase includes:

1. The deployment of the means of detection 1 with a transmitter and a PLC, taking into account the recommended geometric parameters of the signaling line H, L (Fig. 4, 6).

2. Deployment on the ground of a system for collecting and processing information, including a signal receiver 4, a timer control device 2, a timer 3, a resolver 5 and a monitor 6 (Fig. 9).

3. Calculation of time intervals for the duration of alarms corresponding to the determined places of violation (traffic on the road or movement to bypass it), and loading them into the decisive device 5 (formula 3, Fig. 8).

4. The start of the means of detection 1 with the transmitter in standby mode.

The main stage begins when the intruder moves along the road or bypasses it and gets into the CO detection zone, it includes:

1. Registration by the receiver 4 of the alarm from the detection means 1 with the transmitter when the intruder crosses his detection zone, the timer 3 starts with the timer control device 2, he starts counting the duration of the alarm and records the detection means 1 that worked with the transmitter in the resolving device 5 (FIG. 9).

2. With the transition of the detection means 1 with the transmitter to standby mode, the timer stops working 3. The value of the alarm duration is recorded in the resolver 5. The determination by the deciding device 5 of belonging to one of two time intervals of the obtained value of the duration of the alarm signal (Fig. 7).

3. Formation of a conclusion about the place of violation by the decisive device 5.

4. Zeroing the timer 3 device 2 timer control. The output of the location of the violation on the monitor 6 (Fig. 9).

The invention is illustrated by graphic materials, which represent:

- FIG. 1 is a deployment diagram of one detection means in the known method of signaling cover of a local area with a road and examples of directions of movement of the intruder [2, 3];

- FIG. 2 is a deployment diagram of two detection means in the known method of signaling cover of a local area with a road and examples of directions of movement of the intruder [2, 3];

- FIG. 3 decision table (withdrawal algorithm) on the route of the intruder along the road or ways to bypass it, for the known method of signaling cover of a local area with a road using two COs;

- FIG. 4 is a deployment diagram of an extended linear part of a detection means in the proposed method of signaling cover of a local area with a road;

- FIG. 5 is a deployment diagram of an extended linear part of a detection means in the proposed method and examples of directions of movement of the intruder;

- FIG. 6 summary table of the averaged performance characteristics of the applied detection tools and the recommended length of the PLC deployed along the road;

- FIG. 7 graphs of membership functions of time intervals of alarm durations from CO when the intruder moves along the road and bypasses it;

- FIG. 8 values of time intervals of alarm durations when an intruder moves along a section of a road or ways to bypass it;

- FIG. 9 is a structural diagram of the relationship of the devices used in the implementation of the method.

The technical result consists in determining the place of violation of a local area with a road (movement of the detected intruder along the road or bypassing it) using only one CO.

Information sources

1. 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.

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. Pat. 2517687 Russian Federation, IPC ⁵¹ G08B 13/12, G08B 25/00, G08B 29/00. The method of determining the direction of movement of the intruder / S.A. Udot. - No. 2012157424/08; declared 12/24/12; publ. 05/27/14, Bull. No. 15.

4. 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.

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

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

7. Leonenkov A.V. Fuzzy modeling in MATLAB and fuzzyTECH / A.V. Leonenkov. - SPb .: BHV - Petersburg, 2005 .-- 736 p.

Claims (1)

The method of signaling cover of a local area with a road, which consists in deploying an extended linear part of one detection tool across the road and ways to avoid it on the right and left, issuing an alarm with a detection tool when an intruder appears in his detection zone, characterized in that when deploying an extended linear part its section with a length 10 times the width of the detection zone of the detection means itself is laid along the road in the immediate vicinity of it so that the horns were in the detection zone along the entire length of this section, and the place of violation — the movement of the intruder along the road or bypassing it — is determined using an algorithm that determines whether the duration of the received alarm signal from the detection means belongs to one of two disjoint ranges of time intervals calculated analytically for each of the places of violation, taking into account the maximum and minimum possible speeds of movement of the intruder, the width of the detection zone, the length of the section of an extended linear h STI deployed along the road, and the transit time detection means into standby mode after the output of the intruder detection area.

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