RU2725571C1 - Complex and signaling device for detection of movable security objects - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: disclosed is a system for detecting movable security objects (e.g. automobiles), comprising detection device (3), control unit (4). Detection device (3) is made in the form of a transceiver with the possibility of transmitting and receiving signals in order to detect in the zone of its operation signaling device (1) installed on a security object. Detection device (3) is also configured to receive a signal from signaling device (1) installed on security object (2), with information on the presence in the coverage area of the device of the means preventing the normal passage of the signal. Signal device (1) installed on the monitored security object (2) is made in the form of a transceiver with the possibility to interact with detection device (3), to receive signals indicating presence in the coverage area of signal device (1) of means preventing normal passage signal and transmit information on presence of said means to detection device (3). Detection device (3) is configured to receive signals indicating presence in its coverage area of means preventing normal signal passage. Signal device (1) and detection device (3) are configured to apply algorithms based on the fuzzy logic principle, which enable to overcome noise preventing the normal passage of the signal.

EFFECT: enabling transmission of an alarm signal, even if there are means in the coverage area of the signal device preventing the signal from passing normally.

10 cl, 2 dwg

Description

The inventive technical device relates to means for detecting and tracking moving objects of protection. It can be used to control the location of mobile security objects, in particular vehicles, and to ensure their return in case of theft to their rightful owners.

The prior art knows a large number of technical solutions designed to detect the fact of theft and search for stolen vehicles.

For example, a solution is known that allows the location of a stolen vehicle to be detected by marks that remain while the vehicle is running, in which the stealing mode according to patent RU 2281212 “DEVICE FOR DETERMINING THE LOCATION OF A STEELED VEHICLE” was activated (IPC B60R 25/00, publication date 10.08. 2006). The disadvantages of this solution are its low reliability, as well as the need to make structural changes to the vehicle when installing a known device.

Known solutions based on the search for stolen cars using signals from wireless networks or satellite navigation, in particular, such solutions are disclosed in the following patents RU 2099791 "Method of radio signaling and detection and system for its implementation" (IPC G08B 25/10, publication date 20.12. 1997), JP 4573466 “System for managing information of vehicle”; 042, publication date 2010.11.04), RU2264937 "Radio-direction finding system for searching and tracking vehicles" (IPC B60R 25/00, G08B 25/08, publication date 11.27.2005), RU 2402161 "Vehicle positioning unit (options) with a power management system "(IPC H04B 1/16, publication date 10/20/2010), RU 2304813" Method of monitoring vehicles and a device for its implementation "(IPC G08G 1/123, G01C 21/30, publication date 08/20/2007 ), CZ29049 (U1) System for radio fix of objects (MPC G01S19 / 03; G01S19 / 42; G08B13 / 00; G08B25 / 10, publication date 01/20/2016), CN105911517 Device, system and method of location searching (G01S5 / 00 IPC; H04W64 / 00, publication date 05/23/2016), KR20000065847 System for tracking stolen vehicle position (Vehicle tracking system, IPC G08B25 / 10, publication date 04/09/1999).

A common disadvantage of the known solutions mentioned above is the fact that the signals of wireless networks and satellite navigation are not a reliable way of transmitting information about the location of a controlled vehicle. This is explained by the fact that the passage of such signals can be limited by various means, in particular, by the so-called signal suppressors or by shielding, when the vehicle is placed, for example, in an underground room where signals from communication networks and satellite navigation do not pass. In this case, the search for a stolen car is not possible.

To eliminate these drawbacks, various means are used to detect the presence of interference to the signal passage. In particular, the technical solution is known according to patent RU2536013 “A method for detecting stolen cars by the presence of signal suppressors” (IPC B60R 25/00, publication date 12/20/2014), which discloses the location of control points on the ground and equipping them with receivers to detect a source of signal interference GPS and GSM. If interference is detected, photograph or video the cars on the highway and transfer the data to a remote server. The data received on the server from several control points is processed for the coincidence of car license plates. Data on the indicated numbers of vehicles and their dynamics is transmitted to the posts of the road patrol service located in the nearest areas from the last place of registration of radio interference. A disadvantage of the known solution is the high complexity of its implementation. To implement the method requires a large network of control points. In addition, the known method does not disclose how to search for a stolen car after it stops moving on roads where established points of control.

As the closest analogue, “Radio search method for stolen vehicles” was selected according to patent RU 2351489 (IPC B60R 25/10, G08B 25/10, publication date 10.04.2009). According to a known solution, a signaling device is installed on the controlled object, with the help of which messages with the identification code and the current coordinates of the vehicle are broadcast. If the signaling device receives signals indicating the presence of means in its area of operation that impede the normal passage of signals, it activates an autonomous radio beacon, which is designed to implement post-theft functions when the GSM channel and GPS system are muted. Such functions are realized by switching to a mode of operation with increased power and reduced duty cycle of radiation. Signals from the signaling device are received using search engines. A disadvantage of the known solution is low reliability, since only one signal variant is used for broadcasting an alarm message, which can also be suppressed as well as the main one, as it is transmitted via a known channel.

The objective of the proposed technical solution is to create a complex for the detection of moving objects of protection, in which the disadvantages of the known solutions are overcome and the alarm signal is transmitted, even if there are means in the signal range of the signal device that impede the normal passage of the signal. The technical result is expressed in increasing the reliability of the complex and the signaling device for detecting moving objects of protection, which is manifested in maintaining the ability to perform the required functions in the specified modes and operating conditions, with high reliability and readiness is in the state in which it performs the required functions.

The task and the claimed technical result is achieved by the fact that in the complex for the detection of moving objects of protection, which contains at least one detection device, made in the form of a transceiver, with the ability to transmit and receive signals in order to detect in its coverage area, at least , one signal device installed at the security facility, receive a signal from the signal device installed at the security facility, with information about the presence in the coverage area of this device of means that impede the normal passage of the signal, and at least one signal device installed at the monitored object security, made in the form of a transceiver with the ability to interact with the detection device, receive signals indicating the presence in the coverage area of the signal device means that impede the normal passage of the signal and transmit information about the presence of these funds to the detection device, and the control unit, according to the claimed solution, the detection device is also configured to receive signals indicative of the presence in the area of its operation of means that impede the normal passage of the signal, the signal device and the detection device are configured to use algorithms built on the principle of fuzzy logic to overcome interference, interfering with normal signal flow. The detection device may be mobile or stationary. The signal device is configured to receive signals indicative of the presence in the area of its operation of means that impede the normal passage of the signal, made in the form of a signal suppressor or a screen that impedes the passage of the signal. The signal device and the detection device are configured to operate in the radio communication range and / or the ultrasonic range and / or the light range. The control unit can be made in the form of an integrated element of a detection device or a separate unit of the complex and can receive, process and store information from a signaling device installed on a controlled mobile security facility, or a detection device for generating signals for controlling the detection device.

The signal device installed on the monitored object of protection is made in the form of a transceiver with the ability to respond to a signal with a request from the detection device to transmit a signal containing a unique identifier assigned to the object of protection, to receive signals indicating the presence of means in the signal zone, that impede the normal passage of the signal, in particular, a suppressor or screen, and transmit information about the presence of these means to the detection device, according to the claimed solution for generating and transmitting a signal to the detection device with information about the presence in the coverage area of the signal device of means that impede the normal passage of the signal, made with the ability to apply algorithms built on the principle of fuzzy logic, allowing to overcome the interference that impedes the normal passage of the signal. The signal device for interacting with the detection device is configured to operate in a radio communication range and / or an ultrasonic range and / or a light range. The signal device may be equipped with additional sensors configured to store information about the effects on them, for example, light, heat, touch, mechanical damage.

As a rule, in case of illegal actions in relation to the object of protection, various means are used to suppress the signal from the signal devices installed on it, which impede the normal passage of the signal. Such means can be made in the form of signal suppressors, when they include the generation of interference in the bands used for radio communications, or in the form of signal shielding when the passage of signals is blocked.

When committing unlawful actions in relation to the object of protection and using means that impede the normal passage of the signal, there are many factors that affect the outcome of a confrontation with such means. First of all, there is no definite information about which suppressor is used, what algorithms it has, in what place, in terms of signal reflection, actions are performed, the general background of the radio air is not clear. In this case, the car can move, move to places that are difficult for the radio signal to pass. There is also no clear information about the location of the detection device, its speed, direction of movement, etc. Based on this variety of external conditions, the application of one universal algorithm is not possible.

The use of the principles of fuzzy logic in the signal device and the complex for detecting moving objects of protection to overcome the action of means that impede the normal passage of the signal allows, depending on the current situation, to select the most optimal algorithm for bypassing interfering devices and transmit a signal with information to the detection device even in such situations, in which none of the known solutions can transmit a signal.

To understand the essence of the proposed solutions adopted the following concepts that explain the principles of fuzzy logic. Fuzzy logic is a logical or control system of an n-valued logical system that uses degrees of state (“degrees of truth”) of inputs and generates outputs depending on the states of the inputs and the rate of change of these states. This is not the usual “true or false” (1 or 0), Boolean (binary) logic on which modern computers are based. Fuzzy logic systems are widely used in those devices in which a variety of input data is possible, while the output data depends on a combination of input data and the results of decisions made on the basis of current input data. The advantages of fuzzy logic are that fuzzy logic systems are flexible and allow you to change the rules, they can even receive inaccurate, distorted and erroneous information. Since these systems are related to human reasoning and decision making, they are useful in forming decisions in complex situations in various types of applications.

To clarify the essence of the claimed solution, the figures show the organization of the complex for detecting moving objects of protection in two possible versions, which are marked with numbers: a signaling device (1) installed on a moving object (2) of protection, a detection device (3) and a unit ( 4) management. Figure 1 contains a diagram of a variant with a control unit, which is an integrated element of the detection device, figure 2 - when executing the control unit as a separate unit of the complex.

Next, with reference to figures 1 and 2, possible options for the execution and implementation of the claimed complex are explained.

The alarm device (1) is installed on the moving object (2) of protection and has at least two operating modes - active and sleep. In order to reduce power consumption and extend the life of the signal device (1) most of the time is in sleep mode. Periodically, at certain time intervals, specified, for example, by the factory settings or during the configuration of the complex, the signal device (1) goes into active mode, in which it performs the following functions:

- receiving signals in a given frequency range,

- receiving a request from the detection device (3) containing a unique identifier assigned to the object (2) of protection on which the signaling device (1) is installed, and transmitting in response to the indicated request a short signal confirming the presence of the signaling device (1) with the requested identifier in the coverage area of the device (3) detection,

- receiving a general request from the detection device (3) with the command to transmit a unique identifier assigned to the object (2) of protection and transmitting the specified identifier in response to this request,

- receiving signals indicating the presence in the area of its operation of means that impede the normal passage of the signal, and transmitting a signal with information about the presence of these means to the detection device (3),

- the implementation of algorithms aimed at overcoming interference caused by means that impede the normal passage of the signal, using the principles of fuzzy logic.

Reception of signals indicating the presence in the zone of its operation of means that impede the normal passage of the signal is characterized by the inclusion of a signaling device (1) to receive signals transmitted at a given moment in a given range of radio communication, their analysis and assessment, whether any from the available signals about the presence in the coverage area of the signal device (1) of means that impede the normal passage of the signal. Such a decision can be made, in particular, if the signal device (1) captures a significant amount of interference in the range exceeding the established permissible interference level, or detects the presence of a signal in the range in which signal transmission is prohibited by industry standards.

The device (3) detection can be performed mobile or stationary. The movement of mobile devices (3) detection is carried out by means of light aircraft, unmanned aerial vehicles, vehicles and on foot. Stationary detection devices (3) can be placed both on separate buildings and are included in the existing infrastructure of the city, in particular on poles, bridge arches, traffic police posts, gas stations, roadside buildings, advertising structures, etc. The detection device (3) is always in active mode and performs the following functions:

- transmitting a request to the signaling device (1) containing a unique identifier assigned to the object (2) of protection on which the signaling device (1) is installed, and receiving a short response signal confirming the presence of the signaling device (1) with the requested identifier in the device coverage area (3) detection.

- transmitting a general request with the command to transmit a unique identifier assigned to the object (2) of protection and receiving the specified identifier in response to this request,

- receiving signals indicating the presence in the area of its operation of means that impede the normal passage of the signal, the use of opposing algorithms,

- receiving information from a signaling device (1) operating under conditions of suppressing radio signals,

- analysis of the received signal from the signal device (1) and calculating the distance to it and the direction of the location of the signal device (1),

- determination of the exact time and location coordinates of the device (3) detection by satellite navigation signals on the received signal

- interaction with the control unit (4).

Reception of signals indicating the presence in the area of the device (3) of detection of means that impede the normal passage of the signal is characterized by the reception of signals transmitted in a given range of radio communications, their analysis and assessment, do any of the available signals indicate the presence in the zone the actions of the device (3) detection of means that impede the normal passage of the signal. Such a decision can be made, in particular, if the device (3) captures a significant amount of interference in the range exceeding the established permissible interference level, or fixes the presence of a signal in the range in which signal transmission is prohibited by industry standards.

The complex also includes a control unit (4). In the simplest embodiment, the control unit (4) is made in the form of an integrated element of the detection device (3) and contains means for input / output of information, for example, a keyboard and a display on which information about the status of the detection device (3) can be displayed, a unique identifier the desired signal device (1) and the parameters of the data received from it, in particular, the level of the received signal. Sound accompaniment of the interaction of the detection device (3) and the signal device (1) is also possible.

When executing the control unit (4) as an independent unit, its functions include receiving and processing information from devices (3) for detecting, creating, storing and managing information about signaling devices (1) installed on monitored objects (2) of protection, signal generation for device control (3) detection. In this embodiment, the control unit can be made, for example, in the form of a personal computer having a connection to radio communication networks for interaction with the detection device (3).

Further, the use of the inventive complex and signal device is illustrated by the example of one of the possible embodiments.

On the movable object (2) of protection, for example, a car, a signal device (1) is installed. As a rule, the signaling device (1) is installed covertly, in a place to which unauthorized access is excluded. In order to increase the reliability of the complex at one object (2), several signaling devices (1) can be installed. Thus, even if one of the signal devices (1) is detected or destroyed, the remaining device (1) will perform its functions. Means for communication via wireless networks, for example, GSM, can be additionally installed on the mobile object (2) of protection. The signal device (1) installed on the object (2) of protection can be equipped with additional sensors configured to store information about the effects on them, for example, light, heat, touch, mechanical damage, etc.

At least one detection device (3) is placed, for example, on an unmanned aerial vehicle or car. The movement route of the mobile detection device (3) is set from the control unit (4), based on the terrain conditions and the applied types of signal devices (1). The movements of the detection device (3) are controlled using satellite navigation channels. All information about the operating status of the detection device (3) is transmitted to the control unit (4).

The complex has two modes: standby mode and search mode. In standby mode, the detection device (3) transmits a general request and receives signals from the signaling device (1), as well as receives signals indicating the presence of means in its area of operation that impede the normal passage of the signal. The complex goes into search mode when the owner of the object (2) is guarded or in an automatic mode, in particular, when signals disappear via GSM communication channels that are additionally installed on the protected object (2), as well as when receiving information from the signaling device (1) and detection devices (3) about the presence in the zone of their action of means that impede the normal passage of the signal.

In the search mode, according to information from the detection devices (3), the zone of the possible location of the desired security object (2) is determined. A search team, for example, with mobile detection devices (3), enters this zone and conducts a search. Moving mobile devices (3) detection is carried out through, in particular, light aircraft, unmanned aerial vehicles, vehicles and on foot. The movement route of the mobile detection device (3) is set from the control unit (4). The movements of the detection device (3) can be controlled using satellite navigation channels. All information about the operating status of the detection device (3) is transmitted to the control unit (4). Upon receipt by the device (3) of a response detection from the signaling device (1), a search is performed at the place of receiving the response using manual devices (3) for detecting, for example, directional antennas and determining the signal level from the signaling device (1). If a device is operating in the zone of location of the signal device (1) that impedes the normal passage of the signal, then the search can also be carried out by suppression signals.

When receiving signals indicating the presence in the zone of the signal device (1) of means that impede the normal passage of the signal, it activates the function of receiving a signal from the detection device (3) using an algorithm to overcome obstructing signals and / or transmitting a signal with information about the presence of these means to the device (3) detection. At the same time, to overcome the obstructing signals or the screen, the signal device (1), using the principles of fuzzy logic, builds algorithms to counteract suppression or shielding. It is known that suppression devices generate a signal that is transmitted with different signal power levels, in different frequency ranges, while the transmission of signals is performed discretely, with certain intervals. The signal device (1) analyzes the characteristic features of the suppression device and determines a variant of the algorithm. For example, the signal device (1) analyzes the signal levels and identifies the degree of suppression in each channel for several groups of sets, for example, there is no suppression, weak suppression, strong suppression, complete suppression. The analysis is also carried out according to the temporal characteristics of the signals and the degree of probability of transmitting short signals is identified, for example, high probability, medium probability and low probability. Similar identification is carried out for several frequency ranges and for several channels in each range, for all available information transmission channels. Depending on the results of the analysis, using the principles of fuzzy logic, an algorithm for the operation of receivers and / or transmitters is selected. For example, several channels are defined where the reception and / or transmission of information is possible. In one - with the highest level of suppression, but with a high probability of receiving and / or transmitting a short packet of information in the interval between the suppression signals. In the second with the least level of suppression and average probability. The remaining channels are also sorted by level and time characteristics. The signal device (1) attempts to receive and / or transmit the signal through channels, for example, having the highest probability of signal transmission. The signal device (1) in the formation of the signal is based on the Shannon-Hartley theorem and generates a signal with the least amount of information. To the request of the detection device (3), with a unique identifier assigned to the object (2) of protection on which the signal device (1) is installed, the signal device (1) transmits the shortest possible response, confirming that it is in the coverage area of the detection device. The transmitter has the technical ability to operate on different available frequency ranges and channels. The same characteristic features of the operation of the suppression device are also seen by the detection device (3). The detection device (3) has great computing power and can implement many variants of algorithms and is ready to accept any of the options defined by the signal device (1).

Due to the use of these algorithms, calculated using the principles of fuzzy logic, the inventive complex and the signal device (1) in its composition provide for the transmission, receipt and processing of a signal from the signal device (1) even if there are means that impede the normal passage of the signal, which increases the reliability of the complex , since it retains its ability to perform the required functions in the specified modes and operating conditions, it has high reliability and is in a state in which it performs the required functions. It is obvious to a specialist that, using conventional logic, a signal device (1) either will not be able to transmit the required signal at all, since, for example, it has a very simple operation algorithm and tries to transmit a signal that is too long only on one given channel, which is suppressed, or, having more a complex algorithm, it will try to “search” to find a channel through which it is possible to transmit a signal, which will require significantly more time and energy consumption than in the claimed complex, which can lead to the fact that the power of the signaling device (1) is not enough to maintain his work for a long period of time necessary to search for the object (2) of protection.

The claimed complex and device are characterized by a high degree of reliability, ensuring the fulfillment of the functions of detecting the object of protection even under the conditions of action of means that impede the normal passage of the signal. At the same time, the claimed technical solution is characterized by high noise immunity, protection against hacking and vandalism due to a significant reduction in the size of the signal device, as well as the principles of fuzzy logic that can provide protection against provocations that can be applied to solutions known from the prior art, when by simple manipulations calculate the algorithm of the signal device located at the object of protection, and completely block its operation.

You must understand that the presented scheme does not exhaust the possible options for implementing the method and does not limit in any way the scope of the claimed technical solution. Other options for implementation in the scope of the claimed formula are possible. In particular, the complex may include other units contributing to a more efficient operation of the complex, comprise a network of detection devices (3), which includes both a plurality of stationary and a plurality of mobile detection devices (3).

Claims (10)

1. A complex for detecting moving objects of protection, comprising at least one detection device made in the form of a transceiver, with the ability to transmit and receive signals in order to detect in the area of its operation at least one signal device installed at the object of protection, receive a signal from a signaling device installed at the security facility, with information about the presence in the coverage area of this device of means that impede the normal passage of the signal, and at least one signaling device installed at the monitored security facility, made in the form of a transceiver with the possibility interact with the detection device, receive signals indicative of the presence in the coverage area of the signal device of means that impede the normal passage of the signal and transmit information about the presence of these means to the detection device, and a control unit, characterized in that the detection device is configured to with the ability to receive signals indicative of the presence in the zone of its action of means that impede the normal passage of the signal, the signal device and the detection device are configured to use algorithms built on the principle of fuzzy logic, which allow overcoming interference that impedes the normal passage of the signal. 2. The complex according to claim 1, characterized in that the detection device can be mobile or stationary. 3. The complex according to claim 1, characterized in that the signal device is configured to receive signals indicative of the presence in the zone of its operation of means that impede the normal passage of the signal, made in the form of a signal suppressor or screen that impedes the passage of the signal. 4. The complex according to claim 1, characterized in that the signal device and the detection device are operable in the radio communication range and / or the ultrasonic range and / or the light range. 5. The complex according to claim 1, characterized in that the control unit is an integrated element of the detection device and is configured to receive, process and store information from a signal device installed on a controlled mobile security facility to generate signals for controlling the detection device. 6. The complex according to claim 1, characterized in that the control unit is a separate unit of the complex and is configured to receive, process and store information from the detection devices to generate signals for controlling the detection device. 7. The signal device installed on the monitored object of protection, made in the form of a transceiver with the ability to respond to a signal with a request from the detection device to transmit a signal containing a unique identifier assigned to the object of protection, to receive signals indicating the presence of a signal device in the coverage area means that impede the normal passage of the signal and transmit information about the presence of these means to the detection device, characterized in that for generating and transmitting a signal to the detection device with information about the presence in the coverage area of the signal device of means that impede the normal passage of the signal, it is configured to apply algorithms built on the principle of fuzzy logic, allowing to overcome interference that impedes the normal passage of the signal. 8. The signal device according to claim 7, characterized in that for interacting with the detection device, it is configured to operate in the radio communication range and / or the ultrasonic range and / or the light range. 9. The signal device according to claim 7, characterized in that it is equipped with additional sensors configured to store information about the effects on them. 10. The signal device according to claim 9, characterized in that the action includes, but is not limited to, light, heat, touch, mechanical damage.

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