KR20100079603A

KR20100079603A - Smart key system and management method of the same

Info

Publication number: KR20100079603A
Application number: KR1020080138137A
Authority: KR
Inventors: 김응열
Original assignee: 김응열
Priority date: 2008-12-31
Filing date: 2008-12-31
Publication date: 2010-07-08

Abstract

PURPOSE: A smart key system and an operating method thereof are provided to prevent interception of vehicles by controlling the vehicle through the mobile communication terminal and authentication. CONSTITUTION: A mobile communication terminal(200) comprises a portable phone module(250) and a smart key unit(210) using the wireless network. The smart key unit creates a wakeup signal by receiving an LF(long frequency) signal. According to the wakeup signal, the smart key unit transmits an authentication key. A certificating unit(110) transmits the LF signal. The certificating unit creates a driving signal by contrasting the authentication key with the saved information. A sensing unit(120) senses the fixed signal set about an instrument installed at a vehicles as a sensing signal. A control unit(130) controls lock or unlock of the door or steering of the vehicle.

Description

Smart key system and its operation method {SMART KEY SYSTEM AND MANAGEMENT METHOD OF THE SAME}

The present invention relates to a smart key system and a method of operating the same, and more particularly, a smart key unit interlocked with a vehicle authentication and control device is provided in a mobile communication terminal, so that the door lock and steering of the vehicle can be carried without a vehicle key. The present invention relates to a smart key system capable of releasing a lock or controlling a device provided in a vehicle and a method of operating the same.

Cars are now becoming a necessity of life as the standard of living increases and the supply of cars increases. Accordingly, research on a variety of technologies, such as a car, an anti-theft device of a vehicle and opening and starting the door of the vehicle, is steadily progressing. For example, a keyless entry method and a keyless start method are provided. ).

The keyless entry method refers to a method in which the door lock is released by the driver without a separate key operation or a remote control operation. When the key is held on the driver's body, the door is automatically unlocked when the key and the electronic authentication device inside the vehicle transmit and receive data with each other.

More specifically, the keyless entry method, a modern keyless entry system first introduced in the 1980s, uses circuit boards, coded RFID technology chips, batteries, and small antennas. Dual batteries and a small antenna send signals to vehicles a few feet away.

The RFID chip embedded in the remote starter includes an optional codeset designed to work with the vehicle. Pressing the unlock button causes the remote starter to send a code with an instruction to open the car door. If the receiver, activated simultaneously with the unlock button, receives the code as expected, the vehicle moves according to the instructions, such as unlocking and opening the door, otherwise it will not respond. This keyless entry method is in the spotlight of consumers because it is useful for its convenience and prevention of theft.

In such a keyless entry method, the driver is required to carry a key used in a vehicle at all times. In other words, if the driver does not have the key, it is impossible to unlock the door or open the door.

This inconvenience is the same in the keyless start method. The keyless start method refers to a method in which a driver can operate a vehicle by starting, operating and stopping the engine if the driver is electronically authenticated without inserting or manipulating a separate mechanical key. If it is certified by the user, it is convenient to start, operate and stop the engine by pressing the button or by hand.

That is, even in the keyless start method, the driver must always carry a key capable of transmitting an authentication code for authentication.

In order to solve such inconvenience, there is an active research to implement a keyless entry and keyless start method of a vehicle by using a mobile communication terminal.

While the research on the method of partially releasing the door lock or remote starting using the mobile communication terminal is being conducted, the keyless start and the keyless entry are implemented together to open / lock the door of the vehicle without manipulating the ignition key. However, research on integrated systems capable of starting and running engines is insufficient.

One object of the present invention for solving the above problems is a smart key system that can be operated door lock or steering lock automatically in the state of not having a ignition key in conjunction with the mobile communication terminal and the authentication and control devices of the vehicle and It provides a method of operation thereof.

Another object of the present invention is to provide a smart key system and a method of operating the same, which can be easily used from opening of a door to a mobile communication terminal without a user carrying a vehicle key.

Still another object of the present invention is to provide a safe and reliable smart key system and a method of operating the same without fear of theft of the vehicle.

According to a preferred embodiment of the present invention for achieving the above object of the present invention, a smart key system using a mobile communication terminal receives a mobile phone module and a long frequency (LF) signal using a wireless communication network to generate a wake-up signal And a mobile communication terminal including a smart key unit driven by the wake-up signal to transmit an authentication key, transmitting the LF signal, receiving the authentication key, and matching the authentication key with previously stored information. An authentication unit for generating a driving signal, a sensing unit for sensing a predetermined signal for a device installed in the vehicle as a sensing signal, and at least one of a door or steering of the vehicle according to the driving signal and the sensing signal. It includes a control unit for controlling one lock or unlock.

At this time, the LF signal is transmitted and received in the frequency band of 3kHz to 300kHz, the authentication key is preferably transmitted and received in the frequency band of 3MHz to 3GHz.

In addition, the authentication key is more preferably encrypted using the AES (Advanced Encryption Standard, Rijndael) algorithm.

The sensing unit may include a door sensor disposed on one or more handles of the door and detecting a contact signal of the handle, and a pedal sensor disposed on the brake pedal of the vehicle and detecting a pressure signal applied to the brake pedal. Of course it is possible.

In addition, the vehicle further includes an immobilizer unit and an engine ECU, wherein the driving signal is generated, and the immobilizer unit generates a startable signal to control an engine ECU according to whether the sensing signal is detected. It is desirable to control the engine so that it can be started.

In addition, the control unit includes a steering lock module, the steering lock module is preferably such that the lock pin is moved in accordance with the rotation of the rotor coupled to the ignition switch to selectively fix the steering column of the vehicle.

At this time, the steering lock module forms an outer shape and is coupled to an ignition lock body accommodating the ignition switch and the ignition lock body on one side, and moves a mover selectively insertable into an accommodating groove formed in the rotor. It includes an actuator. Here, the actuator moves the mover according to the driving signal and the sensing signal to lock or unlock the rotor to substantially lock or unlock the steering column to substantially lock or unlock the steering column. It is desirable to control the lock.

The actuator may further include a housing, a solenoid embedded in the housing and moved by electromagnetic force, and a mover coupled or integrally formed with the solenoid.

In addition, according to another preferred embodiment of the present invention for achieving the objects of the present invention, the smart key system operating method is a step of transmitting an LF signal in a vehicle, receiving the LF signal in a mobile communication terminal, and receiving a wake-up signal Generating and transmitting an authentication key according to the present invention; receiving the authentication key, and generating a driving signal when the authentication key matches with the previously stored information. In addition, the drive signal is generated, the door handle installed in the vehicle detects the contact, if the contact is detected, the step of releasing the door lock and the drive signal is generated, the brake pedal installed in the vehicle is a constant pressure And if the pressure is higher than the step of releasing the steering lock.

The smart key system operating method may further include generating a startable signal when the driving signal is generated and the steering lock is released, and engine ECU may start an engine provided in the vehicle according to the startable signal. Preferably, the method further includes controlling to a state.

According to the present invention, there is an advantage that the control including the door lock release, steering lock release and start-up of the vehicle can be performed using a mobile communication terminal carried by an individual without having a vehicle key.

In addition, since the vehicle is controlled through authentication with the mobile communication terminal, there is an effect of improving safety and reliability without fear of theft of the vehicle.

In addition, by enabling the vehicle control using the mobile communication terminal, it is not necessary to provide a separate control mechanism or device, for example, a vehicle key, there is an effect that can be convenient to drive the vehicle.

In addition, since the door lock or steering is not switched to the unlocked state only by having the mobile communication terminal, there is an advantage of preventing unintended operation.

In addition, the LF signal receiver includes a wake up filter to generate a wake-up signal, so that when the LF signal is not detected from the outside, the smart key unit can be kept in a low power state to extend battery life. There is this.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments. Note that, in the following description, components that are substantially the same in structure and function and can be handled identically can be identified by the same reference numerals.

First embodiment

Referring to the smart key system using a mobile communication terminal according to a first embodiment of the present invention. 1 is a block diagram showing the configuration of a smart key system according to a first embodiment of the present invention.

As shown in the drawing, the smart key system includes a mobile communication terminal 200, an authentication unit 110, a sensing unit 120, and a control unit 130. At this time, the authentication unit 110, the sensing unit 120 and the control unit 130 is preferably provided in the vehicle.

The mobile communication terminal 200 includes a mobile phone module 250 that uses a commonly used wireless communication network, receives a long frequency (LF) signal, generates a wake-up signal, and is driven by the wake-up signal. It includes a smart key unit 210 for transmitting the authentication key 20.

Here, the smart key unit 210 receives the LF signal 10 and is driven by the LF signal receiver 213 and the wakeup signal to generate a wakeup signal, thereby generating an authentication key 20. And an authentication key transmitter 215 to transmit.

At this time, the authentication key 20 is preferably encrypted using the AES (Advanced Encryption Standard) algorithm, where the AES algorithm is an abbreviation of the Advanced Encryption Standard (AES). The official name for this algorithm refers to the encryption standard algorithm using 256 bits, and in other words, the Rijndael algorithm.

In addition, the LF signal receiver 213 includes a wake up filter to generate the wake up signal, and when the LF signal 10 is not detected from the outside, the LF signal receiver 213 uses the smart key unit 210. There is an advantage in extending battery life by keeping it in a low power state.

The authentication unit 110 includes an LF signal transmitter 111 for transmitting the LF signal 10 to a predetermined area around the vehicle 100 in the vehicle 100, and the smart key unit 210. And an authentication key receiver 113 for receiving the authentication key 20 transmitted from the microprocessor, which is commonly used to generate a driving signal when the authentication key 20 is matched by comparing the authentication key 20 with previously stored information. It is also possible to have a receiver and a transmitter.

At this time, the LF signal 10 is transmitted and received in the low frequency band of 3kHz to 300kHz band, the authentication key 20 is preferably to be transmitted and received in the high frequency band of 3MHz to 3GHz band, the frequency band licensed for each country It is more preferable to transmit and receive with.

The sensing unit 120 is provided to detect a predetermined signal for various devices installed in the vehicle 100 as a sensing signal, and FIG. 2 is described in more detail. 2 is an exemplary diagram for explaining the operation of the smart key system according to the first embodiment of the present invention.

As shown in the drawing, the sensing unit 120 includes a door sensor 121 and a pedal sensor 123. The door sensor 121 is disposed on a handle 151 of one or more doors provided in the vehicle 100 and is provided to detect a contact signal of the handle 151. In addition, the pedal sensor 123 is disposed on the brake pedal 153 of the vehicle 100 and provided to sense a pressure signal applied to the brake pedal 153.

The control unit 130 may be a lock of at least one of various devices 150 provided in the C vehicle 100, for example, a door or steering of the vehicle according to the driving signal and the sensing signal. It is provided to control the unlock.

Here, a brief example of the operation of the smart key system, the mobile communication terminal 200 enters the distance (d) corresponding to the transmission area of the LF signal 10 transmitted from the authentication unit 110. In this case, the mobile communication terminal 200 transmits the authentication key 20, and the authentication unit 110 generates a driving signal according to the authentication key 20.

At this time, when the user contacts the handle 151 of the door of the vehicle 100, the door sensor 121 detects the contact to generate the sensing signal, and accordingly, the control unit 130 The door is controlled to be converted into an unlocked state.

Here, the smart key system may be configured to unlock the steering or control other devices in addition to controlling the lock of the door to the unlocked state as described above. 4 is presented. FIG. 3 is a block diagram illustrating a smart key system further including an immobilizer unit and an engine ECU, and FIG. 4 is an exemplary diagram for explaining an operation of releasing a steering lock.

As shown therein, the smart key system further includes an immobilizer unit 155 and an engine ECU 157. For reference, for convenience of description, descriptions of the same or similar components as those shown in FIGS. 1 to 2 will be omitted.

The immobilizer unit 155 is provided to control the operation of the engine ECU 157 according to the drive signal and the sensing signal generated by the authentication unit 110, that is, the drive signal is generated, the sensing When the signal is detected, the immobilizer unit 155 generates a startable signal and transmits it to the engine ECU 157, so that the engine ECU 157 can start the engine mounted on the vehicle 100. To control.

In addition, as shown in FIG. 4, when the user enters the vehicle 100 and presses the brake pedal 153, the pedal sensor 123 senses the pressure of the brake pedal 153. Generates a sensing signal and, accordingly, the control unit 130 controls to switch the steering 154 to an unlocked state.

Therefore, since the door lock or the steering 154 is not switched to the unlocked state only by having the mobile communication terminal 200, there is an advantage that an unintended operation can be prevented.

In addition, since the vehicle 100 is controlled through authentication with the mobile communication terminal 200, there is an effect of improving safety and reliability without fear of theft of the vehicle.

At this time, the control unit 130 further includes a steering lock module 301 for controlling the steering 154 in a locked or unlocked state.

The steering lock module 301 includes an ignition lock body 300 and an actuator 400.

Here, the ignition lock body 300 is provided with a main body 310, the lower side of the shaft receiving portion 320 through which the steering shaft 325 connected to the steering 154 as a donut shape passes through the lower side. Is provided. In addition, an upper side of the main body 310 is provided with an ignition switch mounting groove 330 to which the ignition switch 370 is mounted, and in a direction facing the ignition switch mounting groove 330 (that is, an opposite side). A key cylinder receiving groove 340 is formed to accommodate the cylinder 350. After the ignition switch 370 is inserted into the ignition switch mounting groove 330, the coupling cover 380 is coupled to be embedded therein, and the key is inserted into the key cylinder receiving groove 340 in a vehicle that is released. The rotor mounted on the cylinder 350 and the key cylinder 350 is coupled.

The steering shaft 325 is locked or unlocked by the lock pin 340. That is, the locking groove of the steering shaft 325 is formed in the region of the steering shaft 325 that is wrapped by the shaft receiving portion 320, the locking pin protruding from the main body 310 to the shaft receiving portion 320 ( The steering shaft 325 is locked by coupling the 340 to the locking groove 326.

In the ignition switch 370, more specifically, the rotor 310 connected to the ignition switch is provided with a receiving groove 351 into which the mover 410 of the actuator 400 can be inserted. When the mover 410 is inserted into the receiving groove 351, the rotation of the lock pin 340 is suppressed by preventing the rotation of the key 360. That is, the locking pin 340 is coupled to the locking groove 326 to maintain the steering shaft 325 in a locked state.

The actuator 400 is coupled to an outer side of the ignition lock body 300, more specifically, to an outer wall of the ignition switch mounting groove 330. A through hole 352 is formed in the ignition lock body 300 so that the mover 410 is selectively inserted into the receiving groove 351 of the ignition switch 370 via the through hole 352.

Here, FIG. 5 is provided for a more detailed description of the actuator 400. 5 is a cross-sectional view of the actuator according to the present invention.

As shown therein, the actuator 400 includes a housing 420 having a through hole 411 formed at one side thereof, a solenoid 430 housed in the housing 420 and moved by electromagnetic force; And a mover 410 coupled to or integrally formed with the solenoid 430.

The solenoid 430 operates on the principle of an electromagnet, and is a device capable of moving forward or backward by a current change of a coil. In the present embodiment, the moving bar 445 is moved by the solenoid 430, the coil spring 440 is provided on the outside. A limit member 450 is provided at the end of the moving bar 445, and the mover 410 is coupled to the outside thereof.

When the electromagnetic force does not act in the solenoid 430, a force that pushes the coil spring 440 until the limit member 450 contacts the inner surface of the housing 420. Therefore, the mover 410 coupled with the limit member 450 is advanced, so that the mover 410 is coupled to the receiving groove 351 of the ignition switch 370 as described above.

When the electromagnetic force acts on the solenoid 430, the moving rod 445, the limit member 450 and the mover 410 is reversed, the mover 410 in the receiving groove 351 of the ignition switch 370 Will be separated. In this case, as described above, the authentication of the mobile communication terminal 200 is completed by the authentication unit 110 to generate the driving signal, and the sensing unit 120 generates the sensing signal. Then, the solenoid 430 is operated to separate the mover 410 from the receiving groove 351 to convert the lock of the steering 154 to the unlocked state.

In the present embodiment, as described above, the actuator 400 is provided as the solenoid 430 and the mover 410, but is not limited thereto or limited thereto. For example, a motor (not shown) and a driving force of the motor are provided. Of course, it is also possible to combine the gears and cam projections to transmit the lock or unlock state of the steering 154.

Therefore, there is an advantage that the control including the door lock release, steering lock release and start-up of the vehicle can be performed using the mobile communication terminal carried by the individual without having the vehicle key.

Second embodiment

Referring to the smart key system operating method according to a second embodiment of the present invention. 6 is a flowchart illustrating a method of operating a smart key system according to a second embodiment of the present invention in order. For reference, the first embodiment will be described with reference to the reference numerals for the components of the smart key system described above with reference to FIGS. 1 to 5, and the description of the similar or identical components to the first embodiment will be described. It will be omitted.

As shown in the drawing, the smart key system operating method first passes through a step P1 of transmitting the LF signal 10 from the vehicle 100. At this time, the LF signal 10 is to be transmitted from the vehicle 100 in the LF signal transmitter 111 only within a predetermined region.

Next, the mobile terminal 200 receives the LF signal 10, generates a wake-up signal, and drives the authentication key transmitter 215 to transmit the authentication key (P2).

Next, the authentication key 20 is received by the authentication key receiver 113 provided in the authentication unit 110 provided in the vehicle, and matching it with previously stored information to generate a driving signal (P3). Go through).

Next, when a driving signal is generated and a contact is detected by the door handle 151 installed in the vehicle 100, a sensing signal is generated to release the lock of the door (P4).

That is, even when the mobile communication terminal 200 is authenticated by the authentication key 20, when the contact is not detected by the door sensor 121 in the door handle 151, the lock of the door is released. As it is kept in a non-intentional state, there is an effect that can prevent the unintentional release of the door lock.

Next, when the driving signal is generated and the brake pedal 153 installed in the vehicle is pressed at a predetermined pressure or more, the pedal sensor 123 detects the sensor signal and then releases the steering lock (P5). The smart key system operation is completed.

Therefore, when the user having the mobile communication terminal 200 approaches the vehicle 100, the driving signal is generated. Accordingly, when the user contacts the door handle 151, the door lock is released, and the driver's seat When the brake pedal 153 is pressed, a series of operations of releasing the steering lock may be performed by carrying only the mobile communication terminal 200 which is always possessed by the public even without a vehicle key.

In addition, subsequent control of the vehicle is possible, and FIG. 7 is provided to explain this in more detail. 7 is a flowchart illustrating a method of operating a smart key system including engine start control in order.

As shown in the drawing, in the smart key system operating method including the engine start control, as described above, when the driving signal is generated and the steering lock is released, the immobilizer unit 155 generates a startable signal. Go through step P6.

Next, according to the startable signal, the engine ECU 157 passes the step (P7) of controlling the engine provided in the vehicle 100 to the startable state, thereby operating the smart key system including the engine start control. Is done.

Therefore, by having the mobile communication terminal 200, it is possible to perform the door lock release, steering lock release and engine start state control of the vehicle, so that the vehicle can be easily controlled without the vehicle key. There is an advantage to that.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

1 is a block diagram showing the configuration of a smart key system according to a first embodiment of the present invention.

2 is an exemplary diagram for explaining the operation of the smart key system according to the first embodiment of the present invention.

3 is a block diagram illustrating a smart key system further comprising an immobilizer unit and an engine ECU.

4 is an exemplary diagram for explaining an operation of releasing a steering lock.

5 is a cross-sectional view of the actuator according to the present invention.

6 is a flowchart illustrating a method of operating a smart key system according to a second embodiment of the present invention in order.

7 is a flowchart illustrating a method of operating a smart key system including engine start control in order.

10: LF signal 20: authentication key

110: authentication unit 120: sensing unit

130: control unit 155: immobilizer unit

157: engine ECU 200: mobile communication terminal

210: smart key unit 250: mobile phone module

300: ignition lock body 301: steering lock module

400: actuator

Claims

A mobile communication terminal including a mobile phone module using a wireless communication network and a smart key unit receiving a long frequency (LF) signal to generate a wake-up signal, and driven by the wake-up signal to transmit an authentication key;

An authentication unit which transmits the LF signal and receives the authentication key and generates a driving signal when the authentication key matches with the previously stored information;

A sensing unit configured to detect a preset signal as a sensing signal for a device installed in the vehicle; And

A control unit controlling a lock or unlock of at least one of a door or steering of the vehicle according to the driving signal and the sensing signal;

Smart key system using a mobile communication terminal comprising a.

The method of claim 1,

The LF signal is transmitted and received in the frequency band of 3kHz to 300kHz, the authentication key is a smart key system, characterized in that the transmission and reception in the frequency band of 3MHz to 3GHz.

The method of claim 1,

The authentication key is a smart key system, characterized in that encrypted using the AES (Advanced Encryption Standard, Rijndael) algorithm.

The method of claim 1,

The sensing unit

A door sensor disposed on a handle of at least one of the doors to detect a contact signal of the handle; And

A pedal sensor disposed on the brake pedal of the vehicle and configured to sense a pressure signal applied to the brake pedal;

Smart key system comprising a.

The method of claim 1,

The vehicle further includes an immobilizer unit and an engine ECU, wherein the driving signal is generated, and the immobilizer unit generates a startable signal to control an engine ECU according to whether the sensing signal is sensed to control an engine ECU. Smart key system characterized in that the control to enable the start.

The method of claim 1,

The control unit includes a steering lock module, the steering lock module to move the lock pin in accordance with the rotation of the rotor coupled to the ignition switch to selectively fix the steering column of the vehicle,

An ignition lock body forming an outer shape and accommodating the ignition switch on one side; And

An actuator coupled to an outer side of the ignition lock body and moving a mover selectively insertable into a receiving groove formed in the rotor;

The actuator moves the mover according to the driving signal and the sensing signal to lock or unlock the rotor to lock or unlock the steering column to substantially lock the steering or Smart key system, characterized in that for controlling the unlock.

The method of claim 6,

The actuator is

housing;

A solenoid embedded in the housing and moved by an electromagnetic force; And

A mover coupled or integrally formed with the solenoid;

Smart key system comprising a.

Transmitting an LF signal in a vehicle;

Receiving the LF signal at a mobile communication terminal, generating a wake-up signal, and accordingly transmitting an authentication key;

Receiving the authentication key and generating a driving signal when matching with the stored information;

Generating a driving signal, detecting a contact at a door handle installed in the vehicle, and releasing a door lock when a contact is detected; And

Releasing the steering lock when the driving signal is generated and the brake pedal installed in the vehicle is pressed above a predetermined pressure;

Smart key system operation method comprising a.

The method of claim 8,

Generating a startable signal when the driving signal is generated and the steering lock is released; And

An engine ECU controlling the engine provided in the vehicle to a startable state according to the startable signal;

Smart key system operating method comprising a further.