KR102515959B1 - Smart key system for detecting vibration - Google Patents

Abstract

The present invention relates to a smart key vibration detection system capable of preventing hacking even when a vibrating part of a smart key having a built-in vibration function is broken in order to prevent theft of a vehicle by hacking wireless communication between a vehicle and a smart key. , In the smart key vibration detection system including a smart key that wirelessly communicates with the vehicle to determine whether authentication and whether the operating distance is out of range, and transmits a corresponding control signal to the vehicle to generate vibration, the smart key , a transmission/reception unit wirelessly communicating with the vehicle, and a control unit determining authentication and operating distance deviation based on the electrical signal received from the transmission/reception unit and transmitting a control signal corresponding thereto, and control received from the control unit It includes a vibration unit generating vibration in response to a signal, a vibration failure determination unit determining whether the vibration unit is out of order, and a vibration failure warning unit warning whether or not the vibration unit is out of order through the vibration failure determination unit.

Description

Smart key vibration detection system {SMART KEY SYSTEM FOR DETECTING VIBRATION}

The present invention relates to a smart key system, and more particularly, to hacking wireless communication between a vehicle and a smart key to prevent theft of a vehicle, which can prevent hacking even when a vibrating part of a smart key with a built-in vibration function is broken. It relates to a smart key vibration detection system.

In order for a car to move, it must first be 'triggered'. In other words, the starting device plays a role of helping the car engine with physical force from the outside until it can operate by itself.

The vehicle's starting device starts with the world's first gasoline car made by Karl Benz of Germany in 1886. When a large flywheel placed horizontally at the rear of the vehicle is turned clockwise as hard as it can, the metal bands connected to the flywheel collide with each other and create sparks. I woke up and it started. After that, until around 1915, the crank handle was usually connected to the crankshaft by inserting it into a small hole under the radiator grille, and then holding the crank handle with both hands and turning it as hard as possible to start the engine.

This method was very laborious and very dangerous, as the engine's revs had to exceed 100 revolutions per minute for the mixture to be supplied from the engine's carburetor, so a strong man could barely turn the crank handle with all his might to get it started. Therefore, accidents in which a hand or arm was seriously injured in the process of starting the engine frequently occurred. After Byron Carter, a close friend of Cadillac Leland's president, started the engine and was hit in the head by the crank handle bouncing, he died. Charles Kettering, president of the company, invented the self-starter, an electric automatic starter that starts at the push of a button. This is a method of starting by connecting a motor driven by direct current from a battery to a crankshaft flywheel gear.

The button-type automatic starter developed by Kettering in 1911 was first installed in the Cadillac Model 30 in 1912, and by 1914, 90% of American mass-produced cars were equipped with self-starters. This self-starter is a groundbreaking invention that increases the automobile population, and marks a revolutionary turning point in the history of automobiles that can be easily driven by the elderly and women. Later, in 1949, Chrysler of the United States developed a turn-key starter that starts the engine by connecting the electric system of the ignition device to the car key holder switch. With the same key, you can also select an intermediate level where you can use attached convenience devices such as interior lights and radios by connecting only the battery without operating the engine.

Recently, along with the development of wireless communication technology, a smart key system has emerged that can prevent vehicle theft of the above-described turnkey starter method and select an intermediate step, and has the convenience of a push-operated button structure of a button start method.

That is, the smart key system detects a signal of a smart key possessed by a driver riding in a vehicle and operates the engine when the driver presses a start button. Therefore, since the smart key possessed by the driver and the button starter of the vehicle exchange signals wirelessly, the vehicle is prevented from being stolen and the driver's convenience is greatly improved. In addition, when the start button is pressed while the driver is on board, only power is turned on according to the operation of the brake pedal, or the engine can be started together with the power source, and the engine is stopped by pressing the start button again.

Such a smart key system has been continuously developed since then, and as shown in FIG. 1, a vehicle ( The starting control of 10) may be performed. In addition, it is a trend that the starting control of the vehicle 10 through the smart key system is becoming more and more automated by excluding such remote operation as well as the action of the driver getting into the vehicle 10 and pressing the start button.

However, as shown in FIG. 2, the LF signal of the recent vehicle 10 is hacked and amplified and transmitted to the smart key 20 far away to transmit a control signal to the vehicle 10, thereby stealing the vehicle 10 A hacking method called RSA (Relay Station Attack) is being used. In order to defend against such RSA, signal strength and location detection as well as various methods have been proposed. If not, there is a technique for blocking the signal of the vehicle 10.

For example, in the case of a smart key system with a vibration function, if the authentication between the vehicle 10 and the smart key 20 is successful and within the working distance, a vibrating unit (not shown) built in the smart key 20 is vibrated and authentication is performed. In the case of failure and departure from the working distance, the vibrating part is not vibrated. Accordingly, when hacking is attempted through RSA, even if the user does not currently use the smart key 20, if the vibrating part of the smart key 20 vibrates, hacking through RSA can be confirmed at once.

Nevertheless, if the vibrating unit built into the smart key 20 fails and vibration does not occur, it can be freely exposed to hacking through the above-described RSA, and thus the theft of the vehicle 10 cannot be prevented. It's a problem that hasn't been done.

An object of the present invention, conceived to solve the above problems, is to hack wireless communication between a vehicle and a smart key to prevent hacking even when the vibrating part of a smart key having a built-in vibration function is broken in order to prevent theft of the vehicle. It is to provide a smart key vibration detection system capable of

In order to achieve the above object, the smart key vibration detection system according to the present invention wirelessly communicates with the vehicle to determine whether authentication and whether the operating distance is out of range, and transmits a control signal corresponding thereto to the vehicle A smart key vibration sensing system including a smart key generating vibration, wherein the smart key includes a transceiver for wireless communication with the vehicle, and whether or not authentication is performed and whether or not the operating distance is out of range based on an electrical signal received from the transceiver. A control unit that determines and transmits a control signal corresponding thereto, a vibration unit that generates vibration in response to the control signal received from the control unit, a vibration failure determination unit that determines whether or not the vibration unit is faulty, and the vibration failure It includes a vibration failure warning unit that warns whether the vibration unit is out of order through a determination unit.

In addition, if the control unit does not receive a response to the control signal transmitted to the vehicle within a predetermined time, it is determined that the operation distance is out of range, and authentication is performed when an authentication failure signal is received with respect to the control signal transmitted to the vehicle. It is determined as failure, and the vibration unit does not generate vibration in the case of deviation from the operating distance of the control unit and authentication failure.

In addition, when the response to the control signal transmitted to the vehicle is received within a predetermined time, the control unit determines that the operation distance is within the range, and when an authentication success signal is received with respect to the control signal transmitted to the vehicle, authentication is successful. and the vibration unit generates vibration within the working distance of the control unit and when authentication is successful.

In addition, the smart key is characterized in that it does not transmit a control signal to the vehicle when it is determined that the vibration unit is out of order.

In addition, the smart key is characterized in that when the control signal is not transmitted to the vehicle due to a failure of the vibrating unit, the control signal is transmitted to the vehicle by a preset button input method.

In addition, the vibration failure warning unit is characterized in that the blinking light installed on the smart key when it is determined that the vibration unit is out of order.

The vibration failure warning unit may be a display installed on the smart key and displayed when it is determined that the vibration unit is out of order.

The vibration failure warning unit may be a speaker installed in the smart key and generating a warning sound when it is determined that the vibration unit is out of order.

In addition, the vehicle is characterized in that when it is determined that the vibrating unit of the smart key is out of order, it is displayed on a cluster, center fascia or HUD or generates a warning sound through a vehicle speaker.

Smart key vibration detection system according to the present invention, in order to prevent theft of the vehicle by hacking the wireless communication between the vehicle and the smart key, even when the vibration part of the smart key having a built-in vibration function fails, the vibration part failure determination unit and the vibration failure warning unit Through this, there is an effect of taking quick action by checking whether the vibrating part of the smart key is broken.

In addition, the vibration failure warning part is externally displayed through the flashing light of the smart key or the display, or a warning sound is generated through the speaker so that the failure of the vibration part can be intuitively identified. There is an effect of generating a warning sound through the to warn the failure of the vibrating unit.

In particular, when it is determined that the vibrating part of the smart key is broken, it is possible to fundamentally prevent hacking of RSA by not sending a control signal to the vehicle, and even if the vibrating part of the smart key is broken, a preset button input method when necessary It may be controlled to transmit a control signal to the vehicle through.

1 is a schematic diagram showing a smart key system of a general vehicle;
Figure 2 is a schematic diagram showing a prior art smart key system equipped with a vibration function to prevent hacking of a vehicle from the embodiment of Figure 1,
3 is a configuration diagram showing an embodiment of a smart key vibration detection system according to the present invention;
4 is a flowchart illustrating a first control process of a smart key through failure of a smart key vibrating unit from the embodiment of FIG. 3;
5 is a configuration diagram showing various embodiments of a vibration failure warning unit from the embodiment of FIG. 3;
6 is a configuration diagram showing various embodiments of a vehicle warning of a failure of a smart key vibration unit from the embodiment of FIG. 3;
Figure 7 is a perspective view showing the embodiment of Figure 6 to appear inside the vehicle,
FIG. 8 is a flowchart illustrating a second control process of a smart key through failure of a smart key vibration unit from the embodiment of FIG. 3 .

Hereinafter, an embodiment of a smart key vibration detection system according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 3, the smart key vibration detection system according to the present invention includes a vehicle 100 and a smart key 200, and the smart key 200 includes a transceiver 210, It includes a vibration unit 230, a vibration failure determination unit 240 and a vibration failure warning unit 250. In addition, the vibration failure warning unit 250 may be a flashing light 251, a display 252, or a speaker 253 as shown in FIG. 5, and the vehicle 100 has a cluster as shown in FIG. 110, a center fascia 120, a HUD 130, and a vehicle speaker 140 may be included.

As shown in FIG. 3, the vehicle 100 refers to driving by driving wheels for the purpose of transporting people or cargo, and includes all vans, trucks, special vehicles, and two-wheeled vehicles other than the passenger cars shown in the drawing. The vehicle 100 includes various sensors such as speed and acceleration sensors, and drives each engine or device in addition to general structures such as an engine, power transmission device, body, suspension device, steering device, brake device, wheel/tire, and electric device. Various driving devices and other devices are provided to do so.

In the present invention, a driver approaches the vehicle 100 while holding the smart key 200 under a general control process of the vehicle 100 in which the smart key system is built, and wireless communication is performed between the vehicle 100 and the smart key 200. After determining whether or not to have been authenticated and whether or not to deviate from the operating distance through communication, a control signal corresponding thereto is transmitted to the vehicle 100 .

That is, as shown in FIG. 3 , the smart key 200 is authenticated and operated based on the transceiver 210 wirelessly communicating with the vehicle 100 and the electrical signal received from the transceiver 210. It includes a controller 220 that determines whether or not the distance has deviated and transmits a control signal corresponding thereto.

In the wireless communication between the vehicle 100 and the smart key 200, the determination of whether the control unit 220 is authenticated through the transceiver 210 and whether or not the operation distance is out of range is performed by using an individual recognition code as a low frequency (LF) or It can transmit and receive radio frequency (RF) signals, and control the opening and closing of the door or trunk of the vehicle 100 by transmitting and receiving control signals through button input of the smart key 200 to operate the vehicle 100. and on/off driving of starting can be performed. In addition, the vehicle 100 recognizes the location of the smart key 200 through a plurality of antennas and can determine whether it is inside or outside the vehicle 100 as well as the exact location outside.

However, as shown in FIG. 2, despite the fact that the actual smart key 200 is located outside the operating distance of the vehicle 100, the LF signal of the vehicle 100 is hacked and amplified through RSA, so that the remote Theft of the vehicle 100 occurs by transmitting to the smart key 200 to transmit a control signal to the vehicle 100, and to prevent this, the smart key 200, as shown in FIG. A vibration unit 230 generating vibrations in response to a control signal received from the control unit 220 is provided. That is, the vibrator 230 generates vibration in response to the control signal received from the control unit 220 .

For example, as shown in FIGS. 3 and 4 , when the control unit 220 does not receive a response to the control signal transmitted to the vehicle 100 within a predetermined time, it is determined that the vehicle 100 is out of working distance, and the vehicle ( When an authentication failure signal is received for the control signal transmitted to 100), authentication failure is determined. At this time, the vibration unit 230 does not vibrate when the control unit 220 deviates from the operating distance and authentication fails.

Conversely, when the response to the control signal transmitted to the vehicle 100 is received within a predetermined time, the control unit 220 determines that the control signal transmitted to the vehicle 100 is within the operating distance, and authentication is successful for the control signal transmitted to the vehicle 100. When the signal is received, it is determined that the authentication is successful, and at this time, the vibrating unit 230 generates vibration within the working distance of the control unit 220 and when the authentication is successful.

Therefore, in normal times, when the user intends to use the smart key 200, the vibrator 230 vibrates when the user operates the smart key 200 within a successful authentication and working distance with the vehicle 100, and the vehicle 100 The vibrating unit 230 does not vibrate when the authentication fails and the operating distance is out of range. On the other hand, despite the fact that the smart key 200 is out of the working distance from the vehicle 100, the vehicle and the smart key are hacked through RSA within the transmission and reception range, respectively. When vibration is generated by the vibration unit 230, the user can immediately check vehicle theft through hacking.

At the time of hacking through the above-described RSA, vehicle theft can be confirmed and prevented in advance through the vibrator 230 of the smart key 200, but if the vibrator 230 is broken, such a vibration notification cannot be confirmed A problem occurs, and to prevent this, a vibration failure determining unit 240 and a vibration failure warning unit 250 may be further included as shown in FIGS. 3 and 4 .

The vibration failure determination unit 240 determines whether the vibration unit 230 is out of order. For example, as a self-diagnosis method, a certain vibration value is artificially generated to check whether the corresponding vibration value is normally recognized, and as a register check method, a register for setting the vibration sensing function is input and read again to determine whether it is the same as the input value. How to check, etc. Regardless of which method is used, it is sufficient if the vibration failure determining unit 240 can determine whether the vibration unit 230 is out of order.

The vibration failure warning unit 250 warns whether the vibration unit 230 is out of order through the vibration failure determination unit 240 . For example, as shown in FIG. 5 , the vibration failure warning unit 250 is installed on the smart key 200 when it is determined that the vibration unit 230 is out of order, and flashes a flashing light 251 or a warning display. It may be a display 252 or a speaker 253 generating a warning sound. Whatever warning means is used, it is sufficient if the vibration failure warning unit 250 can display or inform the outside of the failure of the vibration unit 230.

On the other hand, since the user usually puts the smart key 200 in a pocket or bag of clothing and does not check it for several days, the user inside the vehicle 100 rather than the display or notification of the vibration failure warning unit 250 Even when the driver is on board, it is necessary to display or notify the failure of the vibrator 230.

To this end, the vehicle 100, as shown in FIGS. 6 and 7 , when it is determined that the vibration unit 230 of the smart key 200 is out of order, the cluster 110, the center fascia 120, or the HUD 130 ) or generate a warning sound through the vehicle speaker 140.

Through the vibration failure determination unit 240 and the vibration failure warning unit 250, it is possible to check at an early stage whether the vibration unit 230 is out of order, not just checking, but theft of the vehicle 100 when hacking is attempted through RSA In order to prevent this, when the vibration unit 230 is out of order, it is necessary to not transmit the control signal of the smart key 200, and even when the vibration unit 230 is out of order, it is necessary to transmit a control signal when necessary by the user. There is also

To this end, as shown in FIGS. 4 and 8 , the smart key 200 prevents transmission of a control signal to the vehicle 100 when it is determined that the vibrator 230 is out of order, thereby attempting hacking through RSA. Even if the operation of the vehicle 100 is not made.

In addition, as shown in FIG. 8 , when the control signal is not transmitted to the vehicle 100 due to a failure of the vibrating unit 230, the smart key 200 transmits a control signal to the vehicle 100 using a preset button input method. It can be controlled to transmit a control signal so that the vehicle 100 can be operated when the user needs.

For example, through a button input method such as long pressing a specific button 260 of the smart key 200 for a certain period of time or pressing one or two or more buttons 260 at the same time, the vibrator 230 temporarily only for a certain period of time It is possible to transmit a control signal to the vehicle 100 even in case of failure.

As described above, the smart key vibration detection system according to the present invention hacks the wireless communication between the vehicle 100 and the smart key 200 to prevent theft of the vehicle 100. Even when the vibration unit 230 of ) is broken, the effect of taking quick action by checking whether the vibration unit 230 of the smart key 200 is broken through the vibration unit failure determination unit 240 and the vibration failure warning unit 250 there is

In addition, the vibration failure warning unit 250 can be displayed externally through the flashing lamp 251 of the smart key or the display 252 or by generating a warning sound through the speaker 253 to intuitively check the failure of the vibration unit 230. In particular, display on the cluster 110, center fascia 120 or HUD 130 of the vehicle 100 or generate a warning sound through the vehicle speaker 140 to warn the failure of the vibration unit 230 It works.

In particular, when it is determined that the vibrator 230 of the smart key 200 is out of order, it is possible to fundamentally prevent hacking of RSA by not transmitting a control signal to the vehicle 100, and the progress of the smart key 200 Even when the east part 230 is out of order, it may be controlled to transmit a control signal to the vehicle 100 through a preset button 260 input method when the user needs it.

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can improve and change the technical spirit of the present invention in various forms. Therefore, such improvements and changes will fall within the protection scope of the present invention as long as they are obvious to those skilled in the art.

100: vehicle
110: cluster 120: center fascia
130: HUD 140: vehicle speaker
200: smart key
210: transceiver 220: control unit
230: vibration unit 240: vibration failure determination unit
250: Vibration failure warning unit 251: Flashing light
252: display 253: speaker
260: button

Claims (9)

In a smart key vibration detection system including a vehicle and a smart key that wirelessly communicates with the vehicle to determine whether authentication and whether the operating distance is out of range, and transmits a corresponding control signal to the vehicle to generate vibration,
The smart key,
A transceiver for wireless communication with the vehicle, a control unit for determining authentication and whether an operating distance is out of range based on the electric signal received from the transceiver, and transmitting a control signal corresponding thereto, and a control signal received from the control unit Including a vibration unit generating vibrations in response to, a vibration failure determination unit determining whether the vibration unit is out of order, and a vibration failure warning unit warning whether or not the vibration unit is out of order through the vibration failure determination unit,
The control unit,
If a response to the control signal transmitted to the vehicle is not received within a predetermined time, it is determined that the operation distance has deviated, and if an authentication failure signal is received for the control signal transmitted to the vehicle, it is determined that authentication has failed,
When a response to the control signal transmitted to the vehicle is received within a predetermined time, it is determined that the operation distance is within the range, and when an authentication success signal is received for the control signal transmitted to the vehicle, it is determined that the authentication is successful,
the vibrator,
Vibration is not generated in the case of deviation from the operating distance of the control unit and authentication failure, and vibration is generated in the case of within the operating distance of the control unit and authentication success,
The smart key,
When it is determined that the vibrator is out of order, hacking of the RSA is prevented by not transmitting a control signal to the vehicle, and when the control signal is not transmitted to the vehicle due to a failure of the vibrator, a preset button input method is used for a certain period of time Smart key vibration sensing system, characterized in that for controlling to transmit the control signal to the vehicle while.
delete delete delete delete According to claim 1,
The vibration failure warning unit,
Smart key vibration sensing system, characterized in that the blinking light installed on the smart key and flickering when it is determined that the vibrating unit is out of order.
According to claim 1,
The vibration failure warning unit,
Smart key vibration sensing system, characterized in that the display is installed on the smart key and displayed when it is determined that the vibration unit is out of order.
According to claim 1,
The vibration failure warning unit,
Smart key vibration sensing system, characterized in that the speaker installed in the smart key to generate a warning sound when it is determined that the vibration unit is out of order.
According to claim 1,
the vehicle,
Smart key vibration detection system, characterized in that when it is determined that the vibration unit of the smart key is broken, display on the cluster, center fascia or HUD or generate a warning sound through a vehicle speaker.

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