KR101334461B1 - Security system for passive keyless entry smart key and method thereof - Google Patents

Abstract

A security system and method are disclosed for passive keyless entry smart keys. An event notification method in a passive keyless entry (PKE) smart key system for a vehicle, wherein the PKE smart key system is installed in a vehicle and requests a certification of the vehicle to a key terminal carried by a user. station); And a transponder configured to transmit a response to the authentication request of the base station in a configuration corresponding to the key terminal, wherein the event notification method includes wireless communication with the base station in the transponder. And outputting a notification signal informing of the event with respect to the event detected through.

Description

SECURITY SYSTEM FOR PASSIVE KEYLESS ENTRY SMART KEY AND METHOD THEREOF

Embodiments of the present invention relate to a passive keyless entry (PKE) system for a vehicle, and more particularly, to a PKE smart key system and an event notification method that can improve the stability and security of a vehicle.

In general, a Passive Keyless Entry System (PKE) is a vehicle security system in which a driver or owner of a vehicle wirelessly controls the vehicle at a location in close proximity to the vehicle. Currently, the door of the vehicle is unlocked and locked. It is used to control the starting of the vehicle.

The PKE system is composed of a transponder, which is a terminal carried by a driver or owner of a vehicle, and a base station installed in the vehicle to wirelessly connect and transmit various types of information. do.

Here, the transponder of the PKE system includes a general wireless ignition key or a smart card carried by the driver or the owner of the vehicle. The transponder of the PKE system supplies energy and signals to the base station installed in the vehicle, and is connected to each part of the vehicle to perform an operation. To control.

In addition, the base station of the PKE system may search by using a low frequency antenna (LF antenna) as to whether the transponder is inside or outside the vehicle to open, close, or start the door of the vehicle. When a user carrying a transponder detects a gradual approach to the vehicle from the outside of the vehicle or takes an action requiring the door to be opened, the vehicle is generally desired to be opened, so the vehicle may be used depending on the position of the transponder. Each door is made to open.

To this end, the base station periodically sends commands at the LF low power frequency and waits for a response of the Ultra High Frequency (UHF) from a valid transponder in range. Thus, the transponder can use dual frequencies of LF (125 kHz) for receiving data and UHF (315, 433, 868, 915 MHz) for transmitting data. Bidirectional communication distances are generally applicable to less than about 3 meters because of the non-propagating nature of the LF signal. The transponder will include a push button for further operation, thus supporting a long one-way distance to the base station to send information according to the push button, and usually always in the receive mode.

The existing PKE system controls the vehicle through the following process.

1. The base station sends a command to the transponder at the LF frequency.

2. The transponder receives the commands sent from the base station via three orthogonal array LC resonant antennas.

3. The transponder sends a response (encryption data) to the base station via the UHF transmitter if the command received from the base station is valid.

4. The base station receives the response from the transponder and activates the switch if the encrypted data is correct.

The PKE system having the above-described configuration can be said to be quite weak in the following aspects.

1. Using an antenna that acts as a repeater near the car, catches the signal transmitted from the car and amplifies it.

2. Where the smart key is located, the attacker also uses an antenna that acts as a repeater to send signals from the car to the smart key.

3. The smart key sends a response because it received a valid command.

4. At this time, the attacker antenna near the smart key amplifies it and transmits it to the vehicle.

5. Eventually, even if the distance between the smart key and the car is some distance away, the attacker will succeed in opening the car's door and starting it.

As such, the existing PKE smart key system can control the vehicle as long as the commands between the base station and the transponder are valid, and thus cannot guarantee the stability of the vehicle.

Provides PKE smart key system and event notification method to enhance security of PKE smart key system.

It provides a PKE smart key system and an event notification method for notifying a user of events detected in a vehicle.

According to an aspect of the present invention, as an event notification method in a passive keyless entry (PKE) smart key system for a vehicle, the PKE smart key system is installed in a vehicle and is provided to the key terminal carried by the user. A base station requesting authentication; And a transponder configured to transmit a response to the authentication request of the base station in a configuration corresponding to the key terminal, wherein the event notification method includes wireless communication with the base station in the transponder. And outputting a notification signal informing of the event with respect to the event detected through.

The outputting of the notification signal informing of the event may output the notification signal in the form of at least one of vibration and voice.

The outputting of the notification signal informing of the event may include a first signal indicating that the user is within a certain distance from the vehicle, a second signal indicating that the door of the vehicle is opened, and indicating that the user has boarded the vehicle. At least one of a third signal and a fourth signal indicating that the user has started the vehicle may be output.

The outputting of the notification signal for notifying the event may be performed by dividing the first signal to the fourth signal into different forms.

The outputting of the notification signal for notifying the event may selectively set whether to output a signal or a signal output form for the first signal to the fourth signal according to the user's request.

According to another aspect of the invention, a vehicle Passive Keyless Entry (PKE) smart key system is installed in a vehicle, the base station (base station) for requesting authentication of the vehicle for the key terminal carried by the user; And a transponder configured to transmit a response to the authentication request of the base station, in a configuration corresponding to the key terminal, wherein the transponder is configured for an event detected through wireless communication with the base station. Notification means for outputting a notification signal for informing the event.

According to an exemplary embodiment of the present invention, the user may easily and quickly recognize a situation of the vehicle by providing a notification signal to the user regarding an event detected in the vehicle.

According to an embodiment of the present invention, when the user is near the vehicle, when the car door is opened, when the vehicle is boarded, when the vehicle is started, a notification signal for notifying each event corresponding to the start of the vehicle is provided. You can quickly prepare for a vehicle attack at any time, dramatically improving the security and safety of the vehicle.

1 is a block diagram illustrating an internal configuration of a PKE smart key system according to an embodiment of the present invention.
2 is a flowchart illustrating an event notification method for providing a notification signal for an event generated in a vehicle according to an embodiment of the present invention.
3 is a flowchart illustrating an event notification method for providing a notification signal for an event generated in a vehicle according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present embodiments relate to a passive keyless entry (PKE) smart key system for a vehicle, and may be applied to a vehicle security system that wirelessly controls a vehicle such as opening or closing a door of a vehicle.

1 is a block diagram illustrating an internal configuration of a PKE smart key system according to an embodiment of the present invention.

Referring to FIG. 1, a PKE smart key system may include a base station 110 attached to a vehicle and a transponder 120 attached to a key terminal carried by a user.

The base station 110 is installed in a vehicle and plays a role of requesting authentication of the vehicle for a key terminal carried by a user. In detail, the base station 110 includes a low frequency antenna (LF antenna) as a coil antenna for the PKE in order to transmit / receive wireless data with the transponder 120. This base station 110 periodically sends a command using the LF frequency and waits for a response to the command from a valid transponder 120 in range. In addition, the base station 110 maintains an encryption code and a vehicle ID required for ID authentication of the key terminal, and based on the encryption code and the vehicle ID and response data received from the transponder 120. ID authentication can be performed. In addition, the base station 110 may control the door opening (Unlock) and lock (Lock) and start of the vehicle after performing the ID authentication of the key terminal.

The transponder 120 is a component corresponding to the key terminal, and is responsible for transmitting a response to the authentication request of the base station 110. In other words, the transponder 120 may refer to a remote controller capable of controlling a vehicle through wireless communication with the base station 110 while being carried and carried by a user. In this case, the transponder 120 uses an LF for receiving data transmitted from the base station 110 and an antenna using dual frequencies of ultra high frequency (UHF) for transmitting data to the base station 110. . In addition, the transponder 120 stores and maintains the vehicle ID required for ID authentication, and temporarily stores the encryption code and the vehicle ID transmitted from the base station 110 for vehicle ID authentication. The transponder 120 responds to the ID authentication request from the base station 110 based on the encryption code transmitted from the base station 110 and the vehicle ID.

In particular, the transponder 120 may include a notification means for providing a notification signal for notifying the corresponding event about an event detected in the vehicle based on wireless communication with the base station 110. For example, the notifying means in the transponder 120 may output a first signal indicating that the user is near the vehicle within a predetermined range. As another example, the notifying means in the transponder 120 may output a second signal indicating that the user has opened the door of the vehicle. As another example, the informing unit in the transponder 120 may output a third signal indicating that the user has boarded the vehicle. As another example, the informing unit in the transponder 120 may output a fourth signal indicating that the user has started the vehicle.

In the present embodiment, the notification means for notifying the event of the vehicle may be configured of at least one of the vibration sensor 121 and the voice output module 122. In other words, the notifying means may output the first to fourth signals in the form of at least one of vibration and voice. In this case, the first to fourth signals should be distinguishable from each other. For example, assuming the voice output module 122 outputs a notification signal, the first signal is 'near the vehicle', the second signal is 'the car door is opened', and the third signal is 'the vehicle'. You have boarded. ', And the fourth signal can be output by dividing the message of each signal, such as' The vehicle has started.' Meanwhile, when the notification signal is output using the vibration sensor 121, the first to fourth signals may be classified and output by varying the frequency, vibration period, and vibration unit according to each signal. In addition, the notifying means in the transponder 120 may selectively set whether to output a signal and a signal output type (vibration or voice) with respect to the first to fourth signals according to a user's request or need.

According to the above configuration, it is possible to improve the security for the PKE smart key by providing a notification signal to the user for the event detected in the vehicle.

2 and 3, the event notification method in the PKE smart key system will be described in detail. In the event notification method of the present invention, each step may be performed by the PKE smart key system described with reference to FIG. 1. 2 and 3, reference numeral 110 denotes a base station attached to a vehicle, and reference numeral 120 denotes a transponder attached to a key terminal.

2 is a flowchart illustrating an event notification method according to an embodiment of the present invention.

1. The base station 110 of the vehicle transmits a wake up signal for periodic probing of the key terminal using the LF frequency.

2. When the key terminal is located within a predetermined range of the vehicle, the transponder 120 may receive a search signal transmitted from the base station 110. In this case, the transponder 120 receives the search signal through three orthogonal array LC resonant antennas. In addition, the transponder 120 may transmit an Ack signal for the discovery signal of the base station 110 using the UHF frequency. In this case, since receiving the search signal from the base station 110 in the transponder 120 means that the user carrying the key terminal is near the vehicle, the transponder 120 outputs a first signal indicating this (see FIG. S201).

3. Then, the base station 110 transmits the vehicle ID (Car ID) to the valid transponder 120 with an encryption code (challenge) using the LF frequency for authentication of the key terminal.

4. Accordingly, when the vehicle ID transmitted from the base station 110 matches, the transponder 120 transmits a response to ID authentication to the base station 110 using the UHF frequency. In this case, the base station 110 may control the opening of the door by operating the switch when the ID authentication for the key terminal is completed based on the response transmitted from the transponder 120. In addition, the transponder 120 may detect a door opening of the vehicle according to the operation of the switch in the base station 110 and output a second signal indicating that the door of the vehicle is opened (S202). In other words, when the user opens the door through an entry or presses a button for opening the door, the output of the first signal is stopped and the second signal is output.

3 is a flowchart illustrating an event notification method according to another embodiment of the present invention.

Referring to FIG. 3, (step 1.) and (step 2.) described in FIG. 2 are omitted, and the base station 110 of the vehicle searches for the key terminal with respect to the transponder 120. ID authentication can be performed.

In the present embodiment, the transponder 120 opens the door of the vehicle with a first signal indicating that the user is near the vehicle when the key terminal is within a predetermined range of the vehicle and the vehicle ID transmitted from the base station matches. All of the second signals for notifying the sound may be output or one notification signal in which the first signal and the second signal are combined may be output (S301).

Furthermore, the transponder 120 may detect a corresponding event when a user who has a key terminal gets on a vehicle or starts after riding, through wireless communication with the base station 110. Accordingly, the transponder 120 may output a third signal indicating that the user has boarded the vehicle or output a fourth signal indicating that the user has started the vehicle for each event. In other words, when an event in which the user rides on the vehicle is detected, the output of the second signal is stopped and a third signal indicating that the user has boarded is outputted, and when the event that starts the vehicle is detected, the output of the third signal is stopped. And a fourth signal indicating that the vehicle has started.

In the present embodiment, the transponder 120 may output the first to fourth signals, which are notification signals according to the above event, in at least one of vibration and voice, and in particular, the first to fourth signals may be output from each other. The output can be divided into other forms. In this case, the user may selectively set whether to output a signal and a signal output form for the first to fourth signals as needed. For example, the first signal and the second signal may be turned on, and the third signal and the fourth signal may be turned off according to a user setting.

By constructing the PKE smart key system in the above manner, a user possessing a key terminal (transponder) starts the vehicle when approaching the vehicle (base station), when the door of the vehicle is opened, and when entering the vehicle / indoor. When this happens, the user hears a beep or vibrates to notify each user, so if there is an attack using a repeater, the user can recognize it in advance. For example, if a user hears a reminder signal that they are close despite being away from the car, the user perceives this as a possible attack of the vehicle by someone and takes immediate action to prevent the user from immediately opening the button by locking the car door. Can be.

As described above, according to an exemplary embodiment of the present invention, when the user is near the vehicle, when the car door is opened, when the vehicle is boarded, when the vehicle is started, the user is provided with a notification signal for notifying each event corresponding to the event. It is possible to quickly prepare for the attack of the vehicle by others, which can dramatically improve the security and safety of the vehicle.

The methods according to embodiments of the present invention may be implemented in the form of a program instruction that can be executed through various computer systems and recorded in a computer-readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. In addition, the above-described file system can be recorded in a computer-readable recording medium.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

110: base station
120: transponder
121: vibration sensor
122: audio output module

Claims (10)

delete delete delete As an event notification method in a Passive Keyless Entry (PKE) smart key system for a vehicle,
The PKE smart key system,
A base station installed in the vehicle and requesting authentication of the vehicle from a key terminal carried by the user; And
A transponder for transmitting a response to the authentication request of the base station in a configuration corresponding to the key terminal.
Lt; / RTI >
The event notification method,
Outputting, by the transponder, a notification signal informing the event about an event detected through wireless communication with the base station;
Lt; / RTI >
The notification signal may include a first signal indicating that the user is within a certain distance from the vehicle, a second signal indicating that the door of the vehicle is opened, a third signal indicating that the user has boarded the vehicle, and the user A fourth signal indicating that the vehicle has been started;
Outputting a notification signal informing the event,
Output the notification signal in the form of at least one of vibration and voice, and in the case of vibration, the first signal and the fourth signal are classified by varying at least one of the number of vibrations, a vibration period, and a vibration unit according to each notification signal. In the case of voice, the first signal to the fourth signal is divided and output by varying the message according to each notification signal,
If another event is detected through wireless communication with the base station while outputting any one of the first to fourth signals, the output of the one notification signal is stopped and the one notification is made. Outputting a notification signal for notifying the detected other event among other notification signals except for a signal;
Event notification method of the PKE smart key system, characterized in that. 5. The method of claim 4,
Outputting a notification signal informing the event,
Selectively setting whether to output a signal or a signal output form for the first signal to the fourth signal according to the user's request
Event notification method of the PKE smart key system, characterized in that. delete delete delete In the Passive Keyless Entry (PKE) smart key system for a vehicle,
A base station installed in the vehicle and requesting authentication of the vehicle from a key terminal carried by the user; And
A transponder for transmitting a response to the authentication request of the base station in a configuration corresponding to the key terminal.
Lt; / RTI >
The transponder,
Notification means for outputting a notification signal for informing the event about an event detected through wireless communication with the base station,
The notification signal may include a first signal indicating that the user is within a certain distance from the vehicle, a second signal indicating that the door of the vehicle is opened, a third signal indicating that the user has boarded the vehicle, and the user A fourth signal indicating that the vehicle has been started;
The notification means,
At least one of a vibration sensor for outputting the notification signal to the vibration, and a voice output module for outputting the notification signal to the voice, and outputs the notification signal in the form of at least one of vibration and voice, in the case of vibration The first signal and the fourth signal may be classified and output by varying at least one of a vibration number, a vibration period, and a vibration unit according to each notification signal, and in the case of voice, the first signal may be different from each other according to each notification signal. To output the fourth signal separately;
If another event is detected through wireless communication with the base station while outputting any one of the first to fourth signals, the output of the one notification signal is stopped and the one notification is made. Outputting a notification signal for notifying the detected other event among other notification signals except for a signal;
PKE smart key system characterized in that. 10. The method of claim 9,
The notification means,
Selectively setting whether to output a signal or a signal output form for the first signal to the fourth signal according to the user's request
PKE smart key system characterized in that.

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