RU147956U1 - NETWORK DEVICE FOR PROTECTING A VEHICLE AGAINST Hijacking - Google Patents

Abstract

1. A network device for protecting a vehicle from theft, containing an input unit, an LED either outputting it, a siren, or output to controlling it, characterized in that it contains at least two code immobilizers, each of which contains at least: one power input, one microcontroller, code input, one electromechanical relay or an output to it or any radio element that allows you to break the electric circuit, or output to it, low-current outputs of negative polarity to control an electromechan locks, as well as at least one input from the master element, the code immobilizer, or at least one output to the slave element, the code immobilizer, or a combination thereof, connected by a wired code channel transmitting an individually specified code, each the code immobilizers contained in the device can be either a master or a slave module depending on the type of connection without making changes to the circuit of the claimed vehicle protection device, any of which is contained in the device ystve immobilizer code can be connected both in parallel and posledovatelno.2. A network device for protecting a vehicle from theft according to claim 1, characterized in that a combination of up to eight digits from 0 to 9.3 can be used as the input by using the control unit and the transmitted code to control the complex. A network device for protecting a vehicle from theft according to claim 1, characterized in that at least one of the code immobilizers in the device contains at least one a�

Description

This utility model relates to the field of protection of vehicles against unauthorized use - theft.

In the field of protecting vehicles from unauthorized use, the use of both individual immobilizers and immobilizers as part of various vehicle safety devices aimed at countering theft has become widespread.

In general, the work of known immobilizers consists in blocking the engine in the absence of a signal from a transponder (key chip), which is fed to a receiver equipped with an antenna via a radio channel.

Known, for example, the AGENT LAIT immobilizer (http://www.magicsys.spb.ru/production/immobilasers/_msagentlight/), which contains a radio tag, a radio channel that implements high-speed dialog data exchange, a digital bus, and an integrated blocking relay. Similar to the immobilizer’s principle of operation, the method of sending a password to a car security system (patent RU 2138412, published September 27, 1999) is designed to increase the security of a security system, including a transponder key, an immobilizer, and an engine control unit, by generating a random code in one of security system elements.

The main disadvantage of the known immobilizers is their limited functionality, as well as the possibility of blocking the start of the engine of one circuit, in the absence of the possibility of working with third-party devices, which does not allow the construction of a fully functional protective complex by combining several elements into a network. The disadvantages of the known immobilizers also include the possibility of only parallel connection to the actuating elements - a blocking relay, a control relay for electromechanical locks, etc., which also limits the possibility of full-featured protection due to the quantitative limitation of the devices used.

Immobilizers are also used as part of various anti-theft systems and complexes.

Also known is an automobile anti-theft device (patent RU 2440256 C2, published January 20, 2012) made on the basis of an immobilizer and having improved protective characteristics due to the structural improvement of locking units, improving the user interface for displaying service information, and qualitatively modifying the design of the hood lock drive and ensuring device compatibility with other car devices on the market.

The vehicle safety system closest to the claimed device is also known (patent RU 2176962, published December 20, 2011), including an engine control unit, an immobilizer and a first data exchange line connecting the immobilizer to an engine control unit, which is additionally equipped with a second exchange line data and protection device of the first data exchange line having a control input and first and second data inputs for transmitting data in the direction from the first input to the second and in the opposite direction, however, the network This system is limited only by the receiving and transmitting device.

The disadvantages of these technical solutions is the inability to connect two or more devices of the same type into a single network, which leads to the need to install devices for various purposes, technical design, a fundamental focus on countering theft, which complicates and increases the cost of protecting a vehicle, increases energy consumption, and the number of these devices limited by the electrical parameters of the devices themselves. It is also possible to quickly determine the position of a known immobilizer using measuring devices, and by identifying at least one of the devices of a network structure, even from different manufacturers, an attacker can easily predict the entire network architecture, i.e. number and type of installed devices. All the above disadvantages do not allow building a network protection system that provides full-featured vehicle protection against theft.

The task to which the claimed technical solution is directed is to increase the efficiency of protecting the vehicle from theft by using a multifunctional network protective complex, built on the basis of the same type of device element - code immobilizer.

This problem is solved due to the fact that the claimed network device for protecting the vehicle from theft, containing an input unit, an LED either output to it, a siren, or output to control it, differs in that it contains at least two code immobilizers, each of which It contains at least one power input, one microcontroller, a code input, one electromechanical relay or an output to it or any radio-technical element that allows you to break the electric circuit, or output to it, low-current negative outputs polarity control to control electromechanical locks, as well as at least one input from the master element - code immobilizer or at least one output to the slave element - code immobilizer, or a combination thereof, connected by a wired code channel that transmits an individual predetermined code, each the code immobilizers contained in the device can be either a master or a slave module depending on the type of connection without making changes to the circuit of the claimed transport protection device redstva, wherein any of the code contained in the immobilizer device can be connected both in parallel and in series.

The network device for protecting the vehicle from theft can use a combination of up to eight digits from 0 to 9 as input by the control unit and transmitted code to control the device.

In a network device for protecting a vehicle from theft, at least one of the code immobilizers in the device may contain at least one analog input for connecting external modules to remotely start the engine blocking algorithm;

In the network complex of the vehicle anti-theft device, at least one code immobilizer in the device may contain at least two electromechanical relays or outputs to them to control the electromechanical bonnet locks or to supply power to external modules.

In the network device for protecting the vehicle against theft, one code immobilizer in the device may contain an input from the hood limit switch.

In the network device for protecting the vehicle against theft, at least one code immobilizer in the device may contain at least one accelerometer.

The technical result, which provides a solution to the problem, is the implementation of full-featured vehicle protection against theft by building a network protection device consisting of the same type of elements - code immobilizers connected by a wired code channel, each of which can act on various vehicle systems such as launch lock engine, control of electromechanical locks, etc., and carry out additional functions, which allows to realize ompleksnuyu protection of the vehicle without the use of additional devices.

Additional protection is also provided due to the possibility of using a large number of driven elements - code immobilizers acting on various vehicle systems, due to the fact that their number is limited only by the electrical performance of the vehicle, and not the device being installed, due to the possibility of being implemented as serial and parallel connection.

The presence of a wired code channel with a predetermined algorithm of operation also provides protection against scanning, protection against code enumeration by limiting the number of input attempts and the time interval between them, as well as additional protection due to the fact that the data of the correct deactivation code is not transmitted to the air. The presence of a wired code channel also provides a more advanced algorithm for transmitting a given code, because when the specified wire code channel is broken, the deactivation of the driven elements - code immobilizers is impossible due to their failure to receive the specified code, and, therefore, it is impossible to unlock the car's circuits and hijack it.

Each element in the device — a code immobilizer — performs an identical algorithm of work with the same command base, which minimizes the number of connections for the implementation of an anti-theft task.

The inclusion in the circuit of the input device from the hood limit switch allows, if necessary, to provide temporary deactivation of the electromechanical operation of the hood closing lock.

The inclusion of an analog input for connecting external devices in the circuit of the device elements - a code immobilizer - allows you to connect devices such as a gsm module, a third-party alarm, which allows you to expand the control functions of the code immobilizer, as well as transmit commands to the code immobilizer at a distance for starting the engine blocking procedure.

The inclusion in the circuit of the device elements - a code immobilizer - electromechanical relays also allows you to control the electromechanical hood lock (opening and closing).

Each element of the device - a code immobilizer - may also contain an accelerometer to determine the moment of movement of the car, which allows engine blocking only in accordance with this moment.

The network device for protecting the vehicle from theft works as follows.

The input block is used to enter an individually specified code, change it and change the state of the device elements - code immobilizers, such as changing a code or switching to service mode.

In the lock mode, when the vehicle ignition is turned on, if the code is not entered, then after three minutes the output to the siren will be turned on for one minute, the output to close the hood lock for one second will also be turned on, twelve seconds after the signal is sent to the siren, the output will be turned on to block the engine by activating an electromechanical relay with a normally-closed contact group, and the engine block will be turned on three times for one second with an interval of five seconds, which allows the driver to a dangerous stop. After turning on the ignition, if the code is entered correctly within three minutes, the system is deactivated, the lock will turn off, and the hood lock will open (for one second.), If the code is entered incorrectly three times, or three times an attempt is made to select through the code channel or it takes three minutes from the start of input, the engine lock will be saved until the ignition is turned off and one minute after the ignition is turned on, during this time the system will not accept the code.

In the main mode, when the ignition is turned on and the correct code is entered, the system opens the hood lock and allows movement, the lock will not be turned on until the next ignition of the vehicle, and after entering the code, the system will not accept further input until the next ignition is turned on.

In the service mode, which is necessary for accessing service work, without revealing an individually programmable code, after turning on the ignition and entering the code, by pressing the control unit button for five seconds until a light signal appears on the control unit, the LED will indicate the entrance to service mode , which will operate until it is turned off by pressing the control unit button and holding it for five seconds after entering the code until the light signal on the control unit turns off, the LED will pecifications exit the service mode and turns off.

Blocking by an external signal. A negative signal can be sent to the analog input for connecting an external negative polarity module, the device will close the hood lock for one second and a half minutes later, turn on the siren for one minute, and block the engine. The signal may be short-term or constant negative polarity. Blocking occurs in all modes, including when the correct code is entered. To ensure a safe stop of the car, blocking occurs one and a half minutes after the external signal is supplied, while a signal is sent to the siren twelve seconds before blocking, which ensures awareness of the upcoming engine blocking.

The code channel is used to coordinate the elements of the device - code immobilizers, connection is possible both parallel and serial, the number of device elements (code immobilizers) connected to the network is limited only by the electrical performance of the vehicle itself.

Claims (6)

1. A network device for protecting a vehicle from theft, containing an input unit, an LED either outputting it, a siren, or output to controlling it, characterized in that it contains at least two code immobilizers, each of which contains at least: one power input, one microcontroller, code input, one electromechanical relay or an output to it or any radio element that allows you to break the electric circuit, or output to it, low-current outputs of negative polarity to control an electromechan locks, as well as at least one input from the master element, the code immobilizer, or at least one output to the slave element, the code immobilizer, or a combination thereof, connected by a wired code channel transmitting an individual predetermined code, each of which the code immobilizers contained in the device can be either a master or a slave module depending on the type of connection without making changes to the circuit of the claimed vehicle protection device, any of which is contained in the device ystve immobilizer code can be connected both in parallel and in series. 2. The network device for protecting the vehicle against theft according to claim 1, characterized in that a combination of up to eight digits from 0 to 9 can be used as input by using the control unit and the transmitted code to control the complex. 3. The network device for protecting the vehicle against theft according to claim 1, characterized in that at least one of the code immobilizers in the device contains at least one analog input for connecting external modules for remote start of the engine blocking algorithm. 4. The network device for protecting the vehicle against theft according to claim 1, characterized in that at least one code immobilizer in the device contains at least two electromechanical relays or outputs to them to control the electromechanical locks of the hood, or power supply to external modules. 5. The network device for protecting the vehicle from theft according to claim 1, characterized in that one code immobilizer in the device may contain an input from the hood limit switch. 6. The network device for protecting the vehicle from theft according to claim 1, characterized in that at least one code immobilizer in the device comprises at least one accelerometer.