RU2546303C1 - Method for signalling coverage of road intersection and bypass paths thereof - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: invention can be used when employing detection means with an extended flexible linear part in the form of a flexible cable, which are based on a wave-conduction or vibration detection principle, for signalling coverage of a four-way road intersection and bypass paths thereof. The method includes deploying, at a four-way road intersection and the adjacent area, two detection means with an extended flexible linear part such that they each cross three roads on a semicircle without crossing each other, extensions of said extended flexible linear parts lie along two roads through which the most likely directions of bypassing the intersection by an offender pass, and using an output algorithm which determines the direction of movement of the offender based on the order of arrival of one to four alarm signals over established time intervals for accumulation thereof.

EFFECT: high probability of detection, specifically detecting an offender when the offender moves in all directions, and accuracy of indicating the direction of movement of the offender, specifically from twelve directions of movement on an intersection - four are determined in pairs and eight uniquely, the directions of bypass are also determined in pairs when signalling coverage of a road intersection and bypass paths thereof using only two detection means.

18 dwg

Description

The invention relates to methods for remote security monitoring of the terrain and can be used in cases of using detection tools (CO) with an extended flexible linear part (PHLCH) in the form of a flexible cable, built on a wire-wave or vibration detection principle, for signaling cover of four-way intersections and ways to get around them [1-3].

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 (bypassing) [4]. In many ways, the success of apprehending an intruder depends on the knowledge of the direction of movement of the reaction forces. Therefore, considerable attention is paid to the signal cover of the four-way intersections of roads and ways to bypass them. In practice, COs with PHLCH are widely used for this, built on a wire-wave or vibration detection principle. [1-3]

There is a method of signaling cover for a crossroads and ways around it using the considered CO, which consists in deploying two CO at the intersection and the subsequent analytical conclusion about the direction of movement of the offender in the sequence of receipt of one to two alarms from CO (Fig. 1, 2) [2 ]. The disadvantage of this method is the low probability of detection and the accuracy of indicating the direction of movement of the intruder. So, of the fourteen possible directions of movement (twelve through the intersection and two bypassing it), two are uniquely determined, ten are defined in two groups of five, and when the intruder moves in two directions, he is not detected (Fig. 3).

The aim of the invention is to increase the likelihood of detection and accuracy of indicating the direction of movement of the intruder with the signal cover of the intersection and ways to bypass it using only two CO.

To achieve this goal, a method was developed for the signal cover of the intersection of roads and ways to bypass it, which consists in deploying at the four-way intersection of the roads and adjacent terrain two SSs with PHLP so that they intersect three roads each in a semicircle without intersecting each other, continuing of these PHLs lay along two roads through which the most probable directions of bypassing the intersection pass, and the application of an inference algorithm that determines the direction of traffic Incoming sequence rushitelya by one to four alarms installed for intervals of their accumulation (Fig. 4, 5).

At the crossroads of roads, PHLD means of detection are deployed so that they cross three roads each in a semicircle without intersecting each other. Also, when deploying PHLP, the most probable direction of the intruder’s movement to bypass the intersection is taken into account, for this continuation of the PHLP turn along the roads through which they (bypass directions) pass (Fig. 6). In total, there are six possible options for the deployment of PHLCH, conventionally called schemes A, B, C, D, D and E (Fig. 7, 8).

For each of the six PHLD deployment schemes at the intersection, when the intruder moves through the intersection, a sequence of one to four alarms from the CO is possible. Moreover, in many cases, the direction of movement of the intruder through the intersection is determined by a unique sequence of signals for each of these directions. So, directions are determined unambiguously when moving along which a sequence of two and four signals arrives, as well as in four of eight sequences of three signals. The remaining directions are determined in pairs, including bypassing the intersection (Fig. 5, 9-13).

Each of the six proposed schemes has its own decision table on the direction of movement of the intruder (inference algorithm). Moreover, all six schemes for the accuracy of determining the direction of movement are equivalent (Fig. 5, 9-13).

In most cases, when moving through an intersection, the intruder crosses the PHL of one CO several times. In order to exclude a situation in which the intruder crosses the extended flexible linear part of the aircraft for a second time, which did not become in standby mode after the intruder left his detection zone during the first crossing, the radius of the semicircle along which the PHL crosses the roads is selected (Fig. 14):

where t _DR - the installation time of the detection tool in standby mode, s;

H is the width of the detection zone of the detection means, m;

V _MAX - the upper limit of the speed of the intruder at the crossroads, m / s;

R1, R2 - the semicircle radii of the extended flexible linear parts of the detection means No. 1 and No. 2, respectively, m

When the PHLP is deployed, the center of the semicircle of one SS coincides with the center of the intersection, the other of the SS lies above the center of the intersection at a distance of three detection zones, the rest of the PHLP (L1, L2) unfolds along the road (Fig. 14, 15).

The width of the detection zone (N), the time it takes for the device to enter standby mode depend on the particular CO used and lie within a dozen meters and a dozen seconds, respectively. Therefore, the radii of the semicircles will be within 20-70 meters (Fig. 15, 16).

A walking intruder moves at a speed the limits of which depend on terrain conditions (Fig. 17). The limits of these speeds are practically determined, known and confirmed on the basis of experimental studies [4-6]. To simplify the calculations, it is recommended to take the upper speed limit (V _MAX ) equal to 10 km / h (2.8 m / s), which with a high degree of guarantee ensures that the conditions for taking into account the possible maximum speed of the intruder are met (Fig. 17).

In some incoming sequences, the first signals may coincide (Fig. 5, 9-13). To eliminate the error of the conclusion about the direction of movement, the accumulation time of the incoming signals cannot be less than the minimum value. This time depends on the ratio of the maximum distance traveled by the intruder through the intersection in a given direction to its minimum speed

where Δt is the accumulation time of incoming signals, s;

T is the minimum accumulation time of incoming signals, s;

S _MAX - the maximum distance traveled by the intruder through the intersection in a given direction from the first to the last intersection with the linear part of the CO, m;

V _MIN - the lower limit of the speed of the intruder at the intersection, m / s.

To simplify the calculations, it is recommended to take the lower limit of the intruder speed V _MIN equal to 0.36 km / h (0.1 m / s), which is comparable to the minimum speed of the intruder at which it is detected by CO, built on the seismic detection principle or the principle of the leaky wave line [1-3].

The maximum distance traveled by the intruder through the intersection in a given direction refers to the areas where he crosses the PHLP four times, so we can assume that (Fig. 14)

The final form of the formula for determining the minimum accumulation time of incoming signals

The method includes two stages: preparatory and main. The preparatory phase includes:

1. Determination of the most probable directions of bypassing the intersection by the intruder (Fig. 6).

2. Deployment of detection tools 1 and 2 with transmitters, taking into account the recommended parameters of the signaling line according to one of six schemes (AE), corresponding to the identified probable directions of the roundabout by the intruder (Figs. 7, 8, 14).

3. Deploying on-site equipment for receiving signals, analyzing and presenting information including: a signal receiver 3, a timer control device 4, a resolver 6 and a monitor 7 (Fig. 18).

3. Determination of the minimum accumulation time of the incoming signals T by the formula 4.

4. Drawing up a decision table (withdrawal algorithm) about the direction of movement of the intruder at the four-way intersection in accordance with the selected deployment scheme (AE) and loading it (him) into the resolving device 6 (Fig. 5, 9-13).

5. The beginning of the work of means 1 or 2 of detection with the transmitter in standby mode.

The main stage begins when the intruder moves through the intersection or bypasses it and enters the detection zone of one of the CO and includes the following sub-steps.

1. Registration by the receiver 3 of the first alarm signal from one of the detection means 1 or 2 with the transmitter when the intruder crosses his detection zone, start the timer 5 by the timer control device 4, start the countdown of the time interval Δt and record the number of the detection means in the resolver 6 (FIG. . eighteen).

2. Further registration by the receiver 3 and comparison by the resolver 6 of the incoming signal sequence with those available in the decision table (output algorithm) about the direction of movement of the intruder (Fig. 5, 9-13).

3. Formation of a conclusion about the direction of movement of the intruder by the decisive device 6 when the obtained data coincide with those available in the decision table (output algorithm) (Fig. 5, 9-13).

4. Resetting the timer 5 by the timer control device 4. The output on the direction of movement of the intruder on the monitor 7 (Fig. 18).

The invention is illustrated graphic materials, where:

- FIG. 1 shows a deployment pattern of extended flexible linear parts of two detection means in a known method for signaling cover for a road intersection and ways to bypass it with examples of directions of movement of the intruder;

- FIG. 2 is a diagram of the deployment of extended flexible linear parts of two detection means in the known method of signaling cover for a road intersection and ways to bypass it with examples of directions of movement of an intruder through an intersection;

- FIG. 3 is a decision table (withdrawal algorithm) about the direction of movement of the intruder at the intersection for a known method of signaling cover for an intersection and ways to bypass it with the deployment of extended flexible linear parts of two detection means;

- FIG. 4 is a diagram of the deployment of extended flexible linear parts of the detection means in the proposed method of signaling cover for a road intersection and ways to bypass it (scheme A);

- FIG. 5 is a decision table (withdrawal algorithm) about the direction of the offender at the crossroads in the proposed method for scheme A;

- FIG. 6 - a table of combinations of the most probable directions of the roundabout bypass;

- FIG. 7 - deployment patterns of extended flexible linear parts of the detection means, depending on the most probable directions of the roundabout circumvention by the intruder (schemes A, B, C);

- FIG. 8 - deployment patterns of extended flexible linear parts of the detection means, depending on the most probable directions of the roundabout circumvention by the intruder (schemes D, D, E);

- FIG. 9 - decision table (withdrawal algorithm) about the direction of the offender at the crossroads for scheme B;

- FIG. 10 - decision table (withdrawal algorithm) on the direction of the offender at the crossroads for scheme B;

- FIG. 11 is a decision table (withdrawal algorithm) about the direction of the offender at the crossroads for scheme D;

- FIG. 12 - decision table (withdrawal algorithm) about the direction of the offender at the crossroads for scheme D;

- FIG. 13 - decision table (withdrawal algorithm) about the direction of the offender at the crossroads for scheme E;

- FIG. 14 is a diagram of the deployment of detection tools and their extended linear parts with the designation of the main dimensions (distances);

- FIG. 15 is a diagram of the boundaries of a detection zone of detection means deployed at an intersection;

- FIG. 16 is a summary table of some averaged tactical and technical indicators of detection tools and recommended geometric dimensions of the signal line.

- FIG. 17 is a table of ranges of speeds of the intruder in various areas of the terrain;

- FIG. 18 is a structural diagram of the collection, processing and display of information over the air.

The technical result consists in increasing the probability of detection (the intruder is detected when he moves in all directions) and the accuracy of indicating the direction of movement of the intruder (of the twelve directions of traffic at the intersection - four are determined in pairs and eight are unambiguous, bypass directions are also determined in pairs) with an alarm cover for a road intersection and ways to bypass it using only two CO.

Information sources

1. Magauenov R.G. Burglar alarm systems: the basics of theory and construction principles: study. allowance / R.G. Magauenov. - M .: Hot - Telecom, 2004 .-- 367 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. 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 p.

Claims (1)

The method of signaling cover for a road intersection and its bypass routes, which consists in deploying two detection means with an extended flexible linear part at a four-way intersection and adjacent terrain, issuing alarms with detection means, determining the direction of movement by the algorithm from the number of these signals and their order of arrival, characterized in that the extended flexible linear parts cross three roads each in a semicircle without intersecting each other, whether these eynyh portions lie along the two roads through which the most likely direction of traversal intersection violator and applies output algorithm determining direction of movement of the intruder Incoming sequence of one to four alarms installed for their accumulation intervals.

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