RU2231457C1 - Vehicle antitheft device - Google Patents

Abstract

FIELD: protection of vehicles from unauthorized use.

SUBSTANCE: data processing and instructions synthesizer unit is connected with User's identification mode setting unit for inquiring and reading of release code and, through communication channel, with at least one vehicle functional member interlock unit. Device includes also enabling signal shaping unit, interlock relay and vehicle running signal shaping unit connected with enabling signal shaping unit. Vehicle running signal shaping unit contains acceleration pickup, speed meter and run meter connected to OR gate. Interlock unit has series-connected communication channel matching unit and decoder. According to one of versions of proposed device, inputs of enabling signal shaping unit are connected to decoder and vehicle running signal shaping unit. According to other design version, output of vehicle running signal shaping unit is connected to data processing and instructions synthesizer unit or, through communication channel, to vehicle functional member interlock unit. Decoder output in this case is directly coupled with interlock relay.

EFFECT: complicating location of vehicle interlocks by criminal.

3 cl, 2 dwg

Description

The invention relates to techniques for protecting vehicles (hereinafter referred to as the TS) against unauthorized use and relates to the design of an anti-theft device mounted on a vehicle, the feature of which is the exclusion of the possibility of electrical and visual identification of the locking units of the vehicle’s functional organs in a protected vehicle.

Known anti-theft device for a vehicle containing a processor unit for processing incoming information and command synthesis, the first input of which is connected to the power bus through the ignition switch, and the first output and second input are connected with the ability to request and read the unlock code, respectively, with the input and output of the mode setting node, including an electronic tag and a receiver connected by a radio channel, the second output of the processing unit for processing incoming information and command synthesis is connected to the inputs through a communication channel nodes of blocking the functional organs of the vehicle, each of which has a relay group connected by contact groups to the functional body of the TS and sequentially connected a matching unit with a communication channel and a decoder, while the inputs of the voltage of each node blocking the functional organs of the TS are connected to the first input of the processor unit for processing incoming information and synthesis teams (RU Pat. No. 2090395, 60 R 25/00, publ. 09/20/1997).

In this device, the hijacker does not have the ability to visually identify the nodes of the blocking of the functional organs of the vehicle in order to replace them and subsequent hijacking of the vehicle. However, a simple contact dialing with the ignition on and off allows the hijacker to separate the blocking units of the vehicle’s functional bodies from the control units of the functional bodies. Despite the fact that the time to check the closing or opening of the turnip contacts when turning the ignition on and off is significantly longer than with visual identification, but this can not always serve as an obstacle to the hijacker in carrying out his plan.

Known anti-theft device for a vehicle containing a processor unit for processing incoming information and command synthesis, the first input of which is connected to the power bus through the ignition switch, and the first output and second input are connected with the ability to request and read the unlock code, respectively, with the input and output of the mode setting node, including an electronic tag and a receiver connected by a radio channel, the second output of the processing unit for processing incoming information and command synthesis is connected to the inputs through a communication channel nodes blocking the functional organs of the vehicle, each of which has a relay group connected by contact groups to the functional organ of the vehicle and sequentially connected a matching unit with a communication channel and a decoder, while the voltage inputs of each node blocking the functional organs of the vehicle are connected to the first input of the processor processing unit incoming information and synthesis of commands, while in at least one node blocking the functional organs of trans A delay element and a motion sensor are introduced into the orthogonal means, and a memory element is introduced into each blocking unit, the first input of the memory element connected to the output of the decoder, the second input connected to the output of the motion sensor, the third input through the delay element connected to the first input of the processing unit of the incoming information processing and command synthesis, and the output is connected to the relay control input (RU Pat. No. 2160196, B 60 R 25/00, publ. 06/21/2000).

This technical solution was made as a prototype for both versions of the claimed invention.

The known device provides protection of the vehicle with the complete exclusion of the possibility of both electrical and visual identification of the nodes of the blocking of the functional organs of the vehicle in a protected vehicle.

The disadvantage of this device is the dependence of the actuators of the blocking unit of the functional organs of the vehicle on the state of the ignition switch of the vehicle, as well as the need for the processor unit to transmit the enabling code combination immediately after turning on the ignition.

This limits the operation of the motion sensor (acceleration, speed, path) to the time when the ignition is turned on, and does not allow it to be used to protect the vehicle, the accumulation and processing of information when the ignition is turned off.

The need for the processor unit to transmit the enabling code combination immediately after the ignition is turned on may reveal to the hijacker the principle of vehicle protection.

A simple dependence of the operation of locking the functional organs of the vehicle on the time the vehicle begins to move allows the attacker to determine the availability of these anti-theft tools on the car.

The present invention is aimed at solving the technical problem of complicating the search for locking units of the vehicle’s functional organs as a result of the absence of a simple dependence of the locking time of the vehicle’s functional units on the start of the vehicle’s movement, as well as the more complete use of sensors included in the locking units, including for performing security functions .

The technical result achieved in this case is to increase the efficiency and reliability of vehicle protection against theft.

The specified technical result for the first embodiment is achieved by the fact that the anti-theft device for a vehicle containing a processor unit for processing incoming information and command synthesis, the first output and the first input of which are connected with the ability to request and read the unlock code, respectively, with the input and output of the identification mode setting unit user, the second output of the specified processor unit through a communication channel is connected to the input of at least one blocking unit functional of a vehicle’s body having a matching unit with a communication channel and a decoder in series, the output of which is connected to the first input of the resolution signal generating unit, a vehicle motion signal generating unit including an acceleration sensor, a speed sensor and a track sensor connected to the “ OR ”, the output of which is connected to the second input of the block forming the enable signal. The output of the enable signal generating unit controls the interlock relay connected by contact groups to the vehicle’s functional body, and for this embodiment of the device, the enable signal generating unit can be made in the form of an “NAND” element, the first input of which is connected to the decoder output, the second input connected to the output of the element “OR”, and the output is connected to the control input of the relay.

The specified technical result for the second embodiment is achieved by the fact that the anti-theft device for a vehicle containing a processor unit for processing incoming information and command synthesis, the first output and the first input of which are connected with the ability to request and read the unlock code, respectively, with the input and output of the identification mode setting unit user, the second output of the specified processor unit through a communication channel is connected to the input of at least one blocking unit body of a vehicle having a serial matching device with a communication channel and a decoder, the output of which is connected to a control input of a relay connected by contact groups to a functional body of a vehicle, a vehicle motion signal generation unit including an acceleration sensor, a speed sensor and a sensor paths connected to the “OR” element, the output of which is connected to the second input of the processor unit for processing incoming information and command synthesis, or through the communication channel is connected to the blocking unit of the functional organ of the vehicle.

These features for each of the options are significant and interconnected with the formation of a stable set of essential features sufficient to obtain the desired technical result.

The present invention is illustrated by specific examples, which, however, are not the only possible, but clearly demonstrate the ability to achieve the above set of features of the desired technical result.

Figure 1 presents a General block diagram of a first embodiment of an anti-theft device for a vehicle; figure 2 presents a General block diagram of a second embodiment of an anti-theft device for a vehicle.

According to the present invention, the anti-theft device for a vehicle according to the first embodiment (Fig. 1) comprises a processor unit 1 for processing incoming information and command synthesis, the first output and the first input of which are connected with the possibility of requesting and reading the unlock code, respectively, with the input and output of the task unit 2 user authentication mode. The second output of the indicated processor unit 1 through the communication channel 3 is connected to the input of at least one blocking unit 4 of the vehicle functional unit, which has a sequentially connected matching unit 5 with the communication channel 3 and decoder 6, the output of which is connected to the first input of the resolution signal generating unit 7 The vehicle motion signal generation unit 8 includes an acceleration sensor 9, a speed sensor 10, and a path sensor 11 connected to an “OR” element 12, the output of which is connected to a second move the enable signal generation unit 7. The output enable signal formation unit 7 controls the locking relay 13, the contact connected to the functional groups of the vehicle body.

Moreover, as can be seen in figure 1, the block forming the enable signal is made in the form of an “AND-NOT” element 14, the first input of which is connected to the output of the decoder 6, the second input is connected to the output of the “OR” 12 element, and the output is connected to the input relay control 13.

It should be noted that the block diagram depicted in figure 1, contains only the elements necessary to explain the essence of the invention. A real anti-theft device for a vehicle should have a number of devices not shown in Fig. 1, elements necessary for sound and light signaling, door locks, warning units for the owner or security authorities about theft and a number of others. However, all these elements are not the subject of the present invention, their design features and operation algorithms can be any, and therefore these devices are not considered in the framework of this invention.

The composition of the processing unit 1 for processing incoming information and command synthesis may, for example, include a request signal generator for node 2 of the user identification mode setting, a signal demodulator of mode setting node 2, a verification and conformity control unit of the identification code, a matching unit with communication channel 3. B the composition of this unit may include a number of elements providing, for example, the functions of locking the doors or the functions of notifying the owner or security authority about unauthorized entry into the protected TS. In the general case, the processor unit implementation presented in RU No. 2160196 or RU No. 2090395 may be used.

The layout of the user identification mode setting unit 2 is determined by the particular type of identification device used. The identification device can be in the form of an active or passive remote control, or in the form of a passive transponder card with digital memory, as shown as examples of implementation in RU No. 2160196, or it can be a button dialer, or respond to the owner’s voice, his fingerprints etc.

Communication channel 3 can be either a wired data bus, or a radio channel, or a data channel through power wires. The type of communication channel uniquely determines the type of coordination nodes with the communication channel, which are both part of the processor unit 1 for processing incoming information and command synthesis, and the structure of nodes 4 for blocking the functional organs of the vehicle. Both the radio channel and the data transmission channel over the power wires are widely described in the technical literature. For example, the features and operation of the communication channel through the power wires are discussed in detail in the patent of the Russian Federation No. 2090395.

Examples of functional organs, to which the contacts of the relay 13 are connected, which are part of each node 4 of the blocking of the vehicle’s functional organs, can be: a gasoline pump, a crankshaft position sensor, an ignition switch, etc.

As sensors of a way, speed and acceleration the ADXL202 chip of Analog Devices, Inc. can be applied. (USA), which determines the acceleration of the vehicle and generates at its output a signal processed by the microcontroller to obtain vehicle motion parameters - acceleration, speed and path.

The use of this chip as such is described in “USING THE ADXL202 ACCELEROMETER AS A MULTIFUNCTION SENSOR (TILT, VIBRATION AND SHOCK) IN CAR ALARMS” (“Using the ADXL202 accelerometer as a multifunction sensor (tilt, vibration and shock) in car alarms”), “ Using the ADXL202 in Pedometer and Personal Navigation Applications ”(“ Using the ADXL202 in Pedometer and Personal Navigation ”).

Also, GPS navigational receivers of many companies are used as path, speed and acceleration sensors, for example, GPS-MS1E chip from u-Blox ag. (Switzerland).

Well-known HCSXXX series decoders from Microchip Technology Inc. can be used as decoders (i.e., devices for converting information from one representation to another) (USA) described in "HCSXXX Decoder Family Product Overview".

The remaining elements that make up the inventive anti-theft device for vehicles are standard, widely described in the technical literature and do not need special explanations.

The design of the node 4 blocking the functional body of the vehicle may coincide with the design of the standard nodes of the control of the functional bodies of the vehicle (for example, standard automotive relays). Moreover, the block 7 of the formation of the enabling signal and the decoder 6, which do not require devices with large dimensions and mass for their execution, may well be included in the structure of each node 4 blocking the functional body of the vehicle. Although the operation of the claimed anti-theft device for a vehicle does not require this, such a construction of a blocking unit 4 for blocking a functional body of a vehicle allows not to connect any additional wires to a node 4 (except for power wires and wires of contact groups) and therefore a visual definition of a blocking unit 4 for blocking a functional body of a vehicle the presence of these additional wires (in comparison with the corresponding control unit of the functional bodies of the vehicle) becomes impossible.

The anti-theft device according to the first embodiment works as follows.

In order to be able to use the vehicle, the owner or his authorized person must have an identification device in the form, for example, of a special electronic tag, which for the considered anti-theft device for the vehicle is part of the user identification mode setting unit 2. An electronic tag transmits an unlock code. This code is supplied to the processor unit 1 for information processing and command synthesis. The signals that cause the electronic tag to issue a special unlock code are generated at the request of the processor unit 1 for processing incoming information and command synthesis, or are received continuously, or the tag itself emits an unlock signal at a certain frequency. After a special unlock code is received in the processing unit 1 for processing incoming information and command synthesis, in the processing unit 1 for processing incoming information and command synthesis, the incoming special unlock code is compared with a valid code (or codes, in general, there may be a whole set of valid codes corresponding to the owner and several authorized persons, each of which has its own electronic tag with a unique special unlock code). If the received special unlock code coincides with one of the valid codes, the processor unit 1 for processing the incoming information and command synthesis generates a local unlock code in the communication channel 3, combining the inputs of all nodes 4 of the blocking of the vehicle’s functional organs. This signal of the local unlock code is supplied through the matching device 5 with the communication channel 3 to the input of the decoder 6, where it is converted according to the specified protocol into the corresponding signal supplied to the first input of the block 7 of the formation of the enabling signal.

Features of the operation of the block 7 of the formation of the enabling signal, we consider the example of its simplest circuit, shown in figure 1.

This simplest circuit is an “AND-NOT” element 14, the first input of which is connected to the output of the decoder, the second input of the “AND-NOT” element is connected to the output of the “OR” element, connected to the inputs with acceleration, speed, and path sensors.

For the indicated circuit, upon receipt of the decoded local unlock code for the vehicle, the decoder changes the state of its output to a logical zero, and at the input of the “AND-NOT” element a signal changes: from a logical unit to a logical zero, which means the non-protection mode.

With a logical zero, at any input of an AND-NOT element, a signal of a logical unit is generated at its inverse output, which maintains a consistently high signal level at the input of relay 13. Thus, a relay switching signal 13 appears at the output of the AND-NOT element.

If the logic unit is stored in the decoder (there was no enable signal from the processor unit), then one of the inputs of the “AND-NOT” element 14 has a constant high level signal from the decoder, and the output signal of the “AND-NOT” element is determined by the output signals of the sensors 9, 10, 11 of the unit for generating traffic signals of the vehicle. If the vehicle does not move, then a logical zero signal is present at the output of the “OR” element, and a logical unit is output at the output of the “AND-NOT” element and, accordingly, relay 13 switching signal appears. However, as soon as the acceleration, speed or path sensor a logical unit appears at the output of the “OR” element, single signals appear at both inputs of the “AND-NOT” element 14, a logical zero is generated at the output of the “AND-NOT” element, which leads to the absence of a relay switching signal 13. Normally open relay 13 contacts open , a normally closed - are closed. This means that a lock is triggered. Further movement of the vehicle is made impossible.

Nodes 4 blocking the functional organs of the vehicle in appearance may coincide with the corresponding nodes of the control of the functional organs. However, when the power is turned on, the standard control units of the vehicle’s functional organs always close normally open relay contacts and always open normally closed relay contacts. The hijacker can check whether this condition for the operation of the control units of the functional bodies of the vehicle is met. If this mandatory condition is not fulfilled, the hijacker will conclude that the control unit of the vehicle’s functional body has been replaced by some blocking unit of the vehicle’s functional body. Further, the hijacker will replace the corresponding control unit with the vehicle’s functional body and theft of the vehicle will become possible.

However, the anti-theft device for the vehicle in question does not give the hijacker such an opportunity to identify the blocking unit 4 of the vehicle’s functional body.

Also, by varying the thresholds of the sensors (acceleration, speed, path), it is possible to achieve the triggering of the vehicle lock not only immediately after the start of movement, but, for example, it is possible to lock the vehicle after a certain path or after reaching a given speed.

If there is no triggering of any of the motion sensors, then when the power is turned on in the node 4 of the blocking of the functional bodies of the vehicle, the normally open contacts of the relay 13 are closed or the normally closed contacts are opened. This means that the hijacker will not be able to find and replace the nodes 4 blocking the functional organs of the vehicle.

According to the present invention, the anti-theft device according to the second embodiment (Fig. 2) comprises a processor unit for processing incoming information and synthesizing commands, the first output and the first input are connected to request and read the unlock code, respectively, with the input and output of the user identification mode setting unit, the second output of said processor unit through a communication channel is connected to the input of at least one blocking unit of a functional organ of a vehicle having tionary matching apparatus included a 5 communication channel 3 and the decoder 6, the output of which is connected to the relay control input 13 connected to the functional groups of contact of the vehicle body. The vehicle motion signal generation unit 8 includes an acceleration sensor 9, a speed sensor 10, and a path sensor 11 connected to an “OR” 12 element, the output of which is connected to the second input of the processing unit for processing incoming information and command synthesis, or is connected through a communication channel to the blocking unit of the functional body of the vehicle. Connection to the communication channel of the element “OR” can be carried out, if necessary, through, for example, decoder 15.

Thus, through the use of a combined acceleration, speed and path sensor, the proposed technical solution significantly reduces the possibility of theft. At the same time, the convenience of mounting the nodes of blocking the functional organs of the vehicle in a protected vehicle and reducing the cost of equipment is ensured, since the motion sensor can be one for any number of nodes of blocking the functional organs of the vehicle.

The present invention is industrially applicable, as it can be implemented using standard components and elements and technologies used in the manufacture of security systems.

Claims (3)

1. An anti-theft device for a vehicle containing a processor unit for processing incoming information and synthesizing commands, the first output and the first input of which are connected with the possibility of requesting and reading an unlock code, respectively, with the input and output of the user identification mode setting node, and the second output is connected via a communication channel with the input of at least one blocking unit of a functional body of a vehicle having a sequentially connected matching unit with a communication channel and a dec a core whose output is connected to the first input of the block for generating the enabling signal, the output of which is connected to the blocking relay connected by contact groups to the functional body of the vehicle, as well as a block for generating signals of movement of the vehicle, the output of which is connected to the second input of the block for generating the allowing signal, in that the vehicle motion signal generation unit includes an acceleration sensor, a speed sensor and a path sensor connected to the inputs of the element and OR, whose output is the output of the forming vehicle motion signals. 2. The device according to claim 1, characterized in that the block for generating the enabling signal is made in the form of an NAND element. 3. An anti-theft device for a vehicle, comprising a vehicle driving signal generation unit, a processing unit for processing incoming information and command synthesis, the first output and the first input of which are connected to request and read the unlock code, respectively, with the input and output of the user identification mode setting node, and the second output through the communication channel is connected to the input of at least one blocking unit of the functional organ of the vehicle having The included matching unit with a communication channel and a decoder, as well as a blocking relay connected by contact groups to the vehicle’s functional body, characterized in that the vehicle’s motion signal generation unit includes an acceleration sensor, a speed sensor and a path sensor connected to the OR element the output of which is connected to the second input of the processor unit for processing incoming information and command synthesis or through a communication channel to the input of the blocking unit of the functional organ of the trans tailoring means, the output of the decoder is connected to a lock relay control input.

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