RU2651443C1 - Method of marking motor vehicles - Google Patents

Abstract

FIELD: radio engineering; motor vehicle industry.

SUBSTANCE: invention relates to the prevention of unauthorized use of vehicles and is designed to identify the vehicle or its parts in order to prevent hijacking of vehicles, to make it difficult to criminally sell the hijacked vehicle or its parts and to make it difficult to use forged documents. In the proposed method, radio frequency tags, a scanning device and complex signals with phase manipulation are used. Method of marking vehicles, which means putting a code from a combination of letters and numbers entered in a computer bank, includes providing vehicles with three radio frequency tags, and the control point is provided with a scanning device containing sources of ultraviolet and high-frequency harmonic oscillations, with the help of which the vehicles at the control point are irradiated with those parts where the code is put and the radio-frequency tags are provided.

EFFECT: ensuring increased reliability of vehicles protection against unauthorized access by duplicating the license plate and the vehicle engine number with radio frequency tags operating at different frequencies.

1 cl, 2 dwg

Description

The proposed method relates to anti-theft systems of vehicles and is intended to identify a car or its parts in order to prevent theft of vehicles, the difficulty of criminal sale of stolen vehicles or parts and the difficulty of using fake documents.

Known methods for marking and protecting vehicles from unauthorized access (ed. Certificate of the USSR No. 893.275, 1.342.796, 1.592.206, 1.796.521, 1.801.849; RF patents No. 2.003.134, 2.051.817, 2.057.334, 2.090.777, 2.107.324, 2.117.961, 2.155.684, 2.156.706, 2.159.190, 2.170.187, 2.179.121, 2.183.351, 2.254.245, 2.287.897, 2.291.468, 2.302. 953, 2.319.212, 2.320.504, 2.350.979, 2.352.490, 2.360.809, 2.395.121, 2.426.148, 2.464.644; US patents No. 4.096.477, 4.218.763, 4.510.489, 4.728 .959, 4.753.895, 4.816.893, 5.525.991, 6.353.466; UK patents No. 2.291.235; Dikarev V.I. (Safety, protection and salvation of a person. St. Petersburg, 2007, pp. 78-112 and others )

Of the known methods closest to the proposed one is the "Method for marking vehicles" (RF patents No. 2,464.644, G08G 1/017, 2011), which is selected as a prototype.

In the known method, a radio frequency tag, a scanning device and complex signals with phase shift keying (PSK) are used.

The known method is based on the fact that a coded combination of letters and numbers is applied to a part of a vehicle that does not coincide with its license plate number, which is entered into a computer data bank. On parts of vehicles made of glass, the code is applied with solid powder under high pressure due to the incorporation of particles of the latter into the surface layer of glass, and for applying the code on other parts of vehicles, an indelible, secretive dye is used that is invisible under ordinary conditions. In this case, the codes applied by secret dye and solid powder coincide with each other.

To increase the reliability of protecting vehicles from unauthorized access, they use a radio frequency tag, a scanning device and complex signals with phase shift keying.

In some cases, attackers replace the license plate of a stolen vehicle and interrupt the number of its engine in order to hide traces of a crime. Therefore, there is an objective need to duplicate the license plate and engine number of the vehicle.

An object of the invention is to increase the reliability of protection of vehicles against unauthorized access by duplicating the license plate number and engine number of the vehicle with radio frequency tags operating at different frequencies.

, облучают при остановке автотранспорта у пункта контроля те его части, где размещены вторая и третья радиочастотные метки вторым и третьим высокочастотными гармоническими колебаниями на частоте ω₂ и ω₃, принимают указанные колебания микрополосковыми приемо-передающими антеннами второй и третьей радиочастотных меток соответственно, нанесенными на поверхность пьезокристаллов, преобразуют их в акустические волны, обеспечивают их распространение по поверхности пьезокристаллов, обратное отражение и преобразование во второй и третий сложные сигналы с фазовой манипуляцией с помощью тонкопленочной встречно-штыревых преобразователей и наборов отражателей, также нанесенных на поверхность пьезокристаллов, излучают сформированные второй и третий сложные сигналы с фазовой манипуляцией в эфир с помощью микрополосковых приемо-передающих антенн, улавливают их приемо-передающей антенной сканирующего прибора, усиливают по мощности, осуществляют их синхронное детектирование с использованием второго и третьего высокочастотных гармонических колебаний на частотах ω₂ и ω₃, выделяют низкочастотные напряжения, пропорциональные второму и третьему модулирующим кодам, совпадающим с номерными знаком и номером двигателя автотранспорта, высвечивают их на индикаторах, сравнивают с номерным знаком и номером двигателя автотранспорта и по результатам сравнения принимают соответствующее решение.The problem is solved in that the method of identifying vehicles or parts thereof to prevent theft, consisting, in accordance with the closest analogue, of applying a code entered in the computer data bank from a combination of letters and numbers that does not match the license plate number of the vehicle, with solid powder on the vehicle parts, made made of glass and secretly invisible under normal conditions using indelible dye on other parts of the vehicle and gluing on at least one visible part of the vehicle coding for the last label. At the same time, when the code is applied with solid powder, the latter, in the form of suspended particles, is introduced into the surface layer of the vehicle parts made of glass under the action of pre-formed by the configuration of the numbers and letters directed under the high pressure of the air jets, matching the code applied with the dye. The vehicles are supplied with the first radio-frequency tag, and the control point is equipped with a scanning device containing sources of ultraviolet and first high-quality harmonic oscillations. When the vehicle stops at the control point, those parts where the code is applied and the first radio-frequency label is placed with ultraviolet and the first high-frequency harmonic vibrations are irradiated. The first high-frequency harmonic oscillation at the frequency of the microstrip transceiver antenna of the first radio-frequency tag deposited by ω ₁ on the surface of the piezocrystal is received, and it is converted into an acoustic wave. They provide its propagation over the surface of the piezocrystal, back reflection and conversion into the first complex signal with phase shift keying using a thin-film interdigital transducer and a set of reflectors, also deposited on the surface of the piezocrystal, emit the generated first complex signal with phase shift keying into the ether using a microstrip receiver transmitting antenna, catch it with the transmitting and receiving antenna of the scanning device, amplify it by power, carry out its synchronous detection Using the first high-frequency harmonic oscillation at a frequency of ω ₁ , a low-frequency voltage is selected that is proportional to the first modulating code that does not coincide with the license plate number of the vehicle, it is displayed on the indicator, compared with the code highlighted in ultraviolet rays, and with the code deposited with solid powder on parts of vehicles made of glass, and according to the results of comparison make the appropriate decision, differs from the closest analogue in that they supply vehicles of the second and third p rf marks, and to control the first paragraph high frequency harmonic oscillation at frequency ω ₁ is multiplied and the phase is divided into two, forming the second and third high-frequency harmonic oscillation at frequency ω ₁ = 2ω ₂ and

, irradiate when the vehicle stops at the control point those parts where the second and third radio frequency tags are placed by the second and third high-frequency harmonic vibrations at a frequency of ω ₂ and ω ₃ , take these vibrations with microstrip transceiver antennas of the second and third radio frequency tags, respectively, applied to the surface of the piezocrystals, convert them into acoustic waves, ensure their propagation over the surface of the piezocrystals, back reflection and transformation into the second and third Signals with phase shift keying using thin-film interdigital transducers and sets of reflectors, also deposited on the surface of piezoelectric crystals, emit the generated second and third complex signals with phase shift keying into the air using microstrip transceiver antennas, capture them with a transmitting antenna of the scanning device amplify the power, carry out their synchronous detection using the second and third high-frequency harmonic oscillations at frequencies ω ₂ and ω ₃ , you divide low-frequency voltages proportional to the second and third modulating codes, which coincide with the license plate and engine number of the vehicle, highlight them on indicators, compare with the license plate and engine number of the vehicle, and make the appropriate decision based on the results of the comparison.

The block diagram of the scan tool is shown in FIG. 1. Functional diagrams of RF tags are shown in FIG. 2.

On all glazing, as well as on headlights, sidelights, light units and car mirrors 1, an alphanumeric code 2 of eight characters is applied. At the beginning and end of code 2 put the signs “*” to eliminate the possibility of refinement of code 2. Code 2 is applied with a special solid powder under high pressure using, for example, a sandblast gun 3. A pattern template is inserted in the barrel of the gun 3, in which a combination of letters and numbers corresponds to the selected code 2. Using compressed air supplied from the source, jets with suspended particles used for marking solid powder are formed. The configuration of these jets corresponds to the elements of the letters and numbers of code 2. When the gun 3 is pressed against the marked element on a shiny smooth surface, clearly visible code 2 remains, since solid powder is embedded into the glass structure under high pressure, and it is impossible to remove such marking without leaving a trace ways. With this coding technology, no residual stresses are created in the glass; therefore, labeling does not reduce the mechanical strength of the marked elements 4.

The same code 2 can be applied to metal, plastic elements of the car, for example, on the front panel, body racks, trunk. Code 2 can be applied to radio equipment installed in the cabin. Code 2 is applied to these parts of the car with a felt-tip pen, which is invisible under normal lighting and cannot be removed with a secret dye, the composition of which is classified in order to avoid attempts to select a solvent with which code 2 could be removed. Detect this code 2 only in ultraviolet rays, and it is retained even when washing old paint or repainting a car. In addition, warning labels are glued onto the windows of the encoded vehicle 5 ATTENTION. CAR CODED.

The scanning device is made in the form of a series-connected source 6 of ultrasonic vibrations, a first power amplifier 7 and a duplexer 9, the input-output of which is connected to the transceiver horn antenna 10. The output of the source of high-quality harmonic oscillations through the first narrow-band filter 22.1 is connected to the second input of the duplexer 9. A phase doubler 20 and a second narrow-band filter 22.2, the output of which is connected to the third input of the duplexer 9, are connected in series to the output of the source 8 of high-frequency harmonic oscillations. To the output of the source of 8 high-frequency harmonic oscillations, a phase 21 amplifier is connected in series to two and a third narrow-band filter 22.3, the output of which is connected to the fourth input of the duplexer 9. A high-frequency amplifier 11.1 (11.2, 11.3) is connected in series to the output of the duplexer 9, phase detector 12.1 (12.2 , 12.3), the second input of which is connected to the output of the narrow-band filter 22.1 (22.2, 22.3), and a digital indicator (13.2, 13.3).

The RFID tag contains a piezoelectric crystal 14.1 (14.2, 14.3), on the surface of which a microstrip transceiver antenna 15.1 (15.2, 15.3) is applied, an aluminum interdigital transducer (IDT) connected to a surface acoustic wave (πАВ) containing two comb systems of electrodes 16.1 (16.2, 16.3), interconnected by buses 17.1 (17.2, 17.3), and 18.1 (18.2, 18.3), connected to the microstrip transceiver antenna 15.1 (15.2, 15.3), and a set of 19.1 (19.2, 19.3) reflectors.

Information about the encoded car and its owner is entered into a computer data bank, which can be used to determine the owner of the car or marked part at any time.

When a car is stopped at a control point, sources 6 and 8 of ultraviolet and high-frequency oscillations are switched on simultaneously or sequentially in time (power sources and switching elements are not shown). They irradiate those parts of the car where the code is applied and radio frequency tags are placed.

Source 8 form a high-frequency harmonic oscillation

U ₁ (t) = V ₁ ⋅cos (ω ₁ t + ϕ ₁ ), 0≤t≤T ₁ ,

where V ₁ , ω ₁ , ϕ ₁ , T ₁ - amplitude, carrier frequency, initial phase and duration of high-frequency harmonic oscillations; which goes to the inputs of the doubler of the 20 phase and the amplifier of the 21 phase into two. The following high-frequency harmonic oscillations are formed at the outputs of the latter, respectively:

U ₂ (t) = V ₂ ⋅cos (ω ₂ t + ϕ ₂ ),

U ₃ (t) = V ₃ ⋅cos (ω ₃ t + ϕ ₃ ), 0≤t≤T ₁ ,

where ω ₂ = 2ω ₁ ; ϕ ₂ = 2ϕ ₁ ;

Voltages U ₁ (t), U ₂ (t), and U ₃ (t) are distinguished by narrow-band filters 22.1, 22.2, 22.3, respectively, and through the duplexer 9 enter the transceiver horn antenna 10, radiate it into the air, and are captured by the microstrip transceiver antennas 15.1, 15.2 and 15.3, IDTs are converted into acoustic waves that propagate along the surface of piezoelectric crystals 14.1, 14.2 and 14.3, are reflected from a set of reflectors 19.1, 19.2 and 19.3 and again IDTs are converted to electromagnetic signals with phase shift keying (PSK):

U ₄ (t) = V ₄ ⋅cos [ω ₁ t + ϕ _k1 (t) + ϕ ₁ ],

U ₅ (t) = V ₅ ⋅cos [ω ₂ t + ϕ _k2 (t) + ϕ ₂ ],

U ₆ (t) = V ₆ ⋅cos [ω ₃ t + ϕ _k3 (t) + ϕ ₃ ], 0≤t≤T ₁ ,

where ϕ _k1 (t) = {0, π} is the manipulated component of the phase, which displays the law of phase manipulation in accordance with the manipulating code M ₁ (t), which is determined by the topology of the interdigital transducer (IDT), which corresponds to the codes applied by the dense dye and solid powder;

ϕ _k2 (t) = {0, π} is the manipulated component of the phase, which displays the law of phase manipulation in accordance with the modulating code M ₂ (t), which is determined by the IDT topology, which corresponds to the license plate of the car;

ϕ _k3 (t) = {0, π} is the manipulated phase component that displays the phase manipulation law in accordance with the modulating code M ₃ (t), which is determined by the IDT topology, which corresponds to the car engine number.

It should be noted that the IDT of the corresponding RF tags are tuned to frequencies ω ₁ , ω ₂ and ω _3, respectively. The tuning frequency is determined by the distance between the electrodes 16.1, 16.2 and 16.3.

The generated UFn signals U ₄ (t), U ₅ (t) and U ₆ (t) are emitted by the microstrip transceiver antennas 15.1, 15.2 and 15.3 into the air, are captured by the transceiver horn antenna 10 of the scanning device and through the duplexer 9 and amplifiers 11.1 , 11.2 and 11.3 of high frequency tuned to frequencies ω ₁ , ω ₂ and ω _3, respectively, are fed to the first (information) inputs of phase detectors 12.1,12.2 and 12.3, to the second (reference) inputs of which high-frequency harmonic oscillations U ₁ (t ), U ₂ (t) and U ₃ (t) with the output of narrow-band filters 22.1, 22.2 and 22.3. As a result of synchronous detection at the outputs of the phase detectors 12.1, 12.2 and 12.3, the following low-frequency voltages are generated:

U _H1 (t) = V _H1 ⋅cos⋅ϕ _K1 (t),

U _H2 (t) = V _H2 ⋅cos⋅ϕ _K2 (t),

U _H3 (t) = V _H3 ⋅cos⋅ϕ _K3 (t), 0≤t≤T ₁ ,

,Where

,

,

,

,

,

proportional to the modulating codes M ₁ (t), M ₂ (t) and M ₃ (t), respectively. These voltages are highlighted by digital indicators 13.1, 13.2 and 13.3. If all codes applied by secret dye and solid powder, as well as the modulating code M ₁ (t) of the RF tag are the same and the modulating codes M ₂ (t) and M ₃ (t) are the same as the license plate and engine number of the car, then with the controlled car everything is fine.

If the indicated codes do not match, then the controlled vehicle raises suspicion, requires additional investigation and is subject to detention.

The application of a code different from the registration state license plate assigned to the vehicle and entered into the computer bank makes it possible to uniquely identify the coded vehicle or its marked parts and their owner, even when using a fake technical passport.

The use of indelible cryptographic paint, which can be applied to any metal, plastic, varnished, painted surface, avoids metal corrosion, as well as the destruction of the material of marked parts.

Codes applied to glass elements cannot be removed practically without inconspicuous damage, since solid powder is introduced into the glass structure under high pressure. The use of a mechanical, rather than a chemical method for marking glasses does not create residual stresses in the glass, which does not cause damage to the marked glass upon impact, for example, of stones.

The proposed method provides increased reliability of protection of vehicles from unauthorized access. This is achieved through the use of radio frequency tags, a scanning device and complex signals with phase shift keying.

In order to prevent theft of vehicles using four levels of protection.

The first level of protection - psychological - is realized by gluing warning labels on the glass of the encoded car ATTENTION, THE CAR IS CODED.

The second level of protection - visible - is realized by applying to the parts of vehicles made of glass, a code with solid powder under high pressure, which does not coincide with the registration number plate of vehicles.

The third level of protection - secret - is implemented by applying to any metal, plastic, varnished, painted surface indelible cryptographic dye that matches the previous code and is detected in ultraviolet rays.

The fourth level of protection - secret - is implemented by radio frequency tags, which are excited by high-frequency harmonic oscillation and re-emit a complex encoded PSK signal, the modulating code of which coincides with the previous codes.

The main feature of RFID tags is the small size and lack of power supplies.

The complex QPSK signal used has high noise immunity, energy and structural stealth.

The indicated protection levels are designed to prevent theft of vehicles, complicate the criminal sale of a stolen car or parts thereof, and do not allow the use of fake documents. At the same time, the process of identifying vehicles or its parts and their owner is facilitated. When coding, an international standard was used, therefore, the car is protected not only in Russia, but also in any European country.

Thus, the proposed method in comparison with the prototype and other technical solutions for a similar purpose provides increased reliability of protection of vehicles from unauthorized access. This is achieved by duplicating the license plate and the engine number of the vehicle with radio frequency tags operating at different frequencies.

An integrated way of marking vehicles and its individual parts gives some hope of reducing the chance of car thieves and increasing the percentage of returned stolen vehicles to their owners.

Claims (1)

A method of marking vehicles, which consists in applying a code entered in a computer data bank from a combination of letters and numbers that does not match the license plate number of the vehicle, solid powder on the vehicle parts made of glass, and secret invisible under normal conditions using indelible dye on other parts of the vehicle and sticking on at least one visible part of the vehicle indicating the coding of the last label, while when applying the code with solid powder, the latter in the form of weighted particles are introduced into the surface layer of the glass parts of vehicles under the action of pre-formed by the configuration of numbers and letters matching the dye applied code under high pressure air jets, the vehicles are provided with a first radio frequency tag, and the control point is equipped with a scanning device containing ultraviolet and first high-frequency sources harmonic oscillations, irradiate when the vehicle stops at the control point those parts where the code is applied and the first RF tag, ultraviolet and the first high-frequency harmonic oscillations, receiving a first high-frequency harmonic oscillation at frequency ω ₁ of the microstrip transmission-reception antenna of the first RFID tag applied to the surface of the piezoelectric crystal, converts it into an acoustic wave, ensure its spread over the piezoelectric crystal surface retroreflection and transformation into the first complex signal with phase shift keying using a thin-film interdigital transducer and set tracers, also deposited on the surface of the piezocrystal, emit the generated first complex signal with phase shift keying into the air using a microstrip transmit-receive antenna, catch it with the transmit-receive antenna of the transmit antenna, catch it with the transmit-receive antenna of the scanning device, amplify it by power, and carry it out synchronous detection using the first high-frequency harmonic oscillation, emit a low-frequency voltage proportional to the first modulating code, not which coincides with the license plate number of the vehicle, it is displayed on the indicator, compared with the code highlighted in ultraviolet rays, and with the code deposited with solid powder on the parts of vehicles made of glass, and according to the results of the comparison they take the appropriate decision, characterized in that they provide the second vehicle and the third by radio-frequency tags, and at the control point, the first high-frequency harmonic oscillation at a frequency of ω _{1 is} multiplied and phase divided by two, forming the second and third high-frequency harmonic e oscillation at frequencies ω ₂ = 2ω ₁ and

, irradiate when the vehicle stops at the control point those parts where the second and third radio frequency tags are placed by the second and third high-frequency harmonic vibrations at frequencies ω ₂ and ω ₃ , take these vibrations with the microstrip transceiver antennas of the second and third radio frequency tags, respectively, applied to the surface of the piezocrystals, convert them into acoustic waves, ensure their propagation over the surface of the piezocrystals, back reflection and transformation into the second and third false signals with phase shift keying using thin-film interdigital transducers and sets of reflectors, also deposited on the surface of piezoelectric crystals, emit the generated second and third complex phase shift key signals into the air using microstrip transmit-receive antennas, pick them up with a transmit-receive antenna of a scanning device , increase power, synchronous detection is performed using the second and third high-frequency harmonic oscillation at frequencies ω ₂ and ω _3, vyd lyayut low frequency voltage proportional to the second and third modulating codes matching the license plate number and vehicle engine, highlight them on the indicators are compared with the license plate number and vehicle engine and taking the results of comparisons corresponding solution.

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