KR20120035439A - Smart key device for vehicle interlocking mobile communication terminal - Google Patents

Abstract

PURPOSE: A smart key apparatus for a vehicle is provided to control the vehicle by communicating a smart key with a portable terminal. CONSTITUTION: A transmitter unit(30) is installed one side of a vehicle. The inside of the transmitter unit includes a wireless communication unit(46), a CPU(Central Processing Unit)(34), a transponder(35), an LF(Low frequency) driver. A smart key(20) is communicated with the portable terminal through a bluetooth system. The inside of the smart key includes a bluetooth antenna(22), a wireless communication unit(26), a three-dimensional antenna(25) in order to communicate the wireless communication with the LF communication.

Description

Smart Key Device for Vehicles Interoperating with Mobile Communication Terminal (Ⅰ) {Smart Key Device for Vehicle Interlocking Mobile Communication Terminal}

The present invention relates to a smart key device for an automobile interoperating with a mobile communication terminal. More particularly, the mobile communication terminal and the transmitter unit of the vehicle wirelessly communicate with each other via a smart key, so that the vehicle can be controlled by the mobile communication terminal. The present invention relates to a smart key device for a vehicle interoperating with a mobile communication terminal.

As the standard of living improves and the spread of automobiles increases, cars are now becoming a necessity. 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.

The keyless entry system uses a circuit board, a coded RFID technology chip, a battery, and a small antenna. Dual batteries and a small antenna send signals to vehicles a few meters 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. When the receiver, which is activated at the same time as 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. That is, if the driver does not have the key, it is impossible to release the door lock 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 should 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 car using a mobile phone without having to carry a key separately.

Here, the penetration rate of mobile phones overwhelms automobiles, and the trend of mounting a Bluetooth system that enables two-way short-range communication in recent years is expanding.

However, in order to implement a keyless entry and a keyless start method of a vehicle by using the cellular phone, there is a problem that electronic authentication must be preceded between the cellular phone and the vehicle.

In particular, the replacement cycle of mobile phones in Korea is very frequent, and there is a hassle of having to perform electronic authentication separately between the mobile phone and the car every time the mobile phone is replaced, and when the mobile phone is lost, theft of the vehicle or keyless entry and keyless start Problems can become impossible.

The present invention allows a mobile communication terminal to communicate with a smart key and control a vehicle by using a smart key for a vehicle used to interwork with only one vehicle.

The present invention

A mobile communication terminal capable of Bluetooth communication;

A transmitter unit connected to one side of the vehicle and having a wireless communication unit, a CPU, a transponder, and an LF driver embedded therein;

Bluetooth communication with the mobile communication terminal, and a mobile communication terminal including a wireless communication unit, a 3D antenna, a CPU and a Bluetooth antenna built therein to enable wireless communication, LF communication or wireless communication and LF communication with the transmitter unit. It provides a smart key device for the car to work with.

According to the present invention, a mobile communication terminal communicates with a smart key and controls a vehicle by using a smart key device for a vehicle used to interwork with only one vehicle, thereby controlling the vehicle with the mobile communication terminal without electronic authentication of the mobile communication terminal and the vehicle. There is a controllable effect.

1 is a block diagram of a smart key device for a vehicle interworking with a mobile communication terminal according to the present invention,
2 is a flowchart illustrating an application of a smart key device for an automobile interoperating with a mobile communication terminal according to the present invention.

The present invention is a mobile communication terminal capable of Bluetooth communication; A transmitter unit connected to one side of the vehicle and having a wireless communication unit, a control processing unit (CPU), a transponder, and a low frequency (LF) driver embedded therein; Bluetooth communication with the mobile communication terminal, and a mobile communication terminal including a wireless communication unit, a 3D antenna, a CPU and a Bluetooth antenna built therein to enable wireless communication, LF communication or wireless communication and LF communication with the transmitter unit. It provides a smart key device for the car to work with.

The smart key device for an automobile according to the present invention is a device for keyless entry and keyless start, and refers to a device for authenticating a driving authority including a user's operation from opening of a door to starting a vehicle.

In addition, the mobile communication terminal according to the present invention refers to a device that the user carries and wirelessly communicates with, for example, a mobile phone, a mobile phone, a personal digital assistant (PDA), and the like.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. However, the following description is only for the purpose of specifically describing the present invention, and the scope of the present invention is not limited by the following description.

1 is a block diagram of a smart key device for a vehicle interoperating with a mobile communication terminal according to the present invention, Figure 2 will be described together with a flow chart showing an application of the smart key device for a vehicle interlocking with the mobile communication terminal according to the present invention. .

As shown in Figure 1 and 2, the smart key device for a vehicle interoperating with a mobile communication terminal according to the present invention includes a mobile communication terminal 10 capable of Bluetooth communication; A transmitter unit 30 connected to one side of the vehicle and having a wireless communication unit 36, a CPU 34, a transponder 35, and an LF driver 32 embedded therein; The wireless communication unit 26, the 3D antenna 25, the CPU 24 therein to enable Bluetooth communication with the mobile communication terminal 10 and enable wireless communication, LF communication or wireless communication and LF communication with the transmitter unit 30. ), And a smart key 30 with a built-in Bluetooth antenna 22.

The mobile communication terminal 10 according to the present invention refers to a device that a user carries and wirelessly communicates. The mobile communication terminal 10 is not particularly limited as long as it is a conventional mobile communication terminal 10 capable of Bluetooth communication with other peripheral devices.

Here, the Bluetooth is a small, inexpensive, low power consumption, a fixed frequency (2.5GHz ISM Open Band) for the wireless connection within a short distance (10 ~ 100m) network access points to a portable device and / or peripherals such as a mobile communication terminal This is a technical standard for communicating using.

Specifically, the mobile communication terminal 10 according to the present invention is a wireless communication with each other, preferably Bluetooth communication with the smart key 20 of the present invention, the smart key 20 and the smart key 20 via the medium You can control the electronically certified vehicle or check the status or information of the vehicle.

In this case, examples of controlling the vehicle include locking / unlocking of the vehicle door or steering, panic alarm, trunk opening, remote starting, and the like. Information such as status, tire inflation pressure or other information output from sensors provided in the vehicle, total driving distance, driving distance, average fuel consumption, driving time, average speed, and the like.

As a specific aspect, it is preferable that the mobile communication terminal 10 according to the present invention has a Bluetooth antenna 12 embedded therein to enable communication with the smart key 20.

In addition, the mobile communication terminal 10 may be installed with an application 14 programmed to control the vehicle separately, so as to check the state or information of the vehicle or control the vehicle according to the operation of the application 14.

In addition, the mobile communication terminal 10 may be provided with a voice recognition means (not shown) capable of recognizing a human voice to analyze the recognized voice signal and control the vehicle using the analyzed signal.

The transmitter unit 30 according to the present invention is used independently of only one vehicle to communicate with the smart key 20 that implements the keyless entry and keyless start method of the vehicle, and controls the vehicle or controls the state or information of the vehicle. As the smart key 20 is provided, any conventional transmitter unit 30 in the art having such a purpose may be used.

The transmitter unit 30 controls the vehicle on one side of the vehicle, preferably controls locking / unlocking of the door, steering locking / unlocking, and / or engine starting, or the state or information of the vehicle, such as a door. Locking / unlocking state of the tire, tire pressure or other information output from the sensor provided in the vehicle, total driving distance, driving distance, average fuel economy, driving time, average speed information through the smart key 20 through the mobile communication terminal ( 10) is connected and installed to provide.

Specifically, the transmitter unit 30 according to the present invention may include a wireless communication unit 36, a CPU 34, a transponder 35, and an LF driver 32 to achieve the above object.

The wireless communication unit 36 provided in the transmitter unit 30 is for wireless communication with the smart key 20, and is not particularly limited as long as it is a conventional wireless communication unit 36 in the art for this purpose. May include a UHF transceiver and / or a Bluetooth IC capable of UHF and / or Bluetooth communication.

The CPU 34 controls the transmitter unit 30 to control the vehicle according to the communication signal transmitted / received by the transmitter unit 30 or to transmit the vehicle state or information signal to the smart key 20.

At this time, the CPU 34 is connected to the components constituting the transmitter unit 30, for example, the wireless communication unit 36, the transponder 35, the LF driver 32, and / or the power supply unit 38. It is possible to control the overall operation of the transmitter unit 30.

When the transponder 35 embedded in the transmitter unit 30 according to the present invention cannot perform a passive entry using the smart key 20 due to insufficient battery of the smart key 20, Use the key to enter the vehicle's interior for emergency starting.

The LF driver 32 according to the present invention periodically transmits an LF signal so that when the driver having the smart key 20 is located within 1 to 2 m of the vehicle, the LF signal transmitted from the LF driver 32 is stored in the smart key ( 20) to receive and confirm that there is a qualified driver, and is not particularly limited as long as it is a conventional LF driver in the art for this purpose.

The transmitter unit 30 according to the present invention may further include a power supply unit 38 to receive a current for driving the transmitter unit 30.

In this case, the power supply unit 38 may use a separate independent power supply means, such as a battery, but is preferably connected to a power supply unit for providing a current to the vehicle, for example, a battery of the vehicle.

The transmitter unit 30 according to the present invention automatically releases the locking of the vehicle door when the user carrying the smart key 20 or the smart key 20 and the mobile communication terminal 10 approaches the vehicle. The use of the engine start button may be authorized by opening the door or receiving a signal from the mobile communication terminal 10 via the smart key 20 or the smart key 20.

Smart key 20 according to the present invention is the Bluetooth communication with the mobile communication terminal 10, the wireless communication and / or LF communication with the transmitter unit 30, the mobile communication terminal 10 and the transmitter unit 30 Relays communication as an intermediary between

At this time, the smart key 20 basically receives the LF signal of the transmitter unit 30 of the vehicle, the user owning the smart key 20 can access the vehicle to open the door of the vehicle, and apply the start-up Common features that are included.

Specifically, when the smart key 20 according to the present invention cannot perform a passive entry using the smart key 20 due to lack of battery, the smart key 20 may enter into the vehicle with a mechanical key for emergency starting. It may be a fob-key provided with a mechanical key.

Here, the fob key is commonly used in an immobilizer system of a vehicle, and the immobilizer system generates an encryption code wirelessly from the fob key as an ignition key, and the engine ECU (Engine Control Unit) , 50) is a system that checks and permits start-up only if it matches the pre-stored ID.

In addition, the smart key 20 is formed to enable Bluetooth communication with the mobile communication terminal 10, the mobile communication terminal 10 controls the vehicle through the smart key 20 without additional electronic authentication or state of the vehicle Or get information.

Thus, the smart key 20 according to the present invention is configured to include a wireless communication unit 26, 3D antenna 25, CPU 24 and Bluetooth antenna 22 therein to achieve the above object.

The wireless communication unit 26 provided in the smart key 20 according to the present invention is for wireless communication with the transponder unit 30, specifically with the wireless communication unit 36 of the transponder unit 30, for this purpose. The wireless communication unit 26 in the art for the purpose of the present invention is not particularly limited, but preferably includes a UHF transceiver or Bluetooth IC capable of UHF and / or Bluetooth communication.

The CPU 24 is connected to components constituting the smart key 20, for example, the wireless communication unit 26, the 3D antenna 25, and / or the power supply unit 28 to install the smart key 20. Overall operation can be controlled.

The 3D antenna 25 according to the present invention is LF communication with the vehicle and the electronic authentication between the vehicle and the smart key 20.

In this case, when the smart key 25 approaches the vehicle, the 3D antenna 25 may be easily connected to the smart key 25 and the transmitter unit 30 of the vehicle regardless of the direction of the smart key 25 approaching the vehicle. The LF communication is not particularly limited, but at least one antenna provided on one of three axes of the 3D antenna 25 may be used for emergency starting.

The Bluetooth antenna 22 according to the present invention is for Bluetooth communication with the mobile communication terminal 10.

The smart key 20 according to the present invention further includes a power supply 28 to receive a current for driving the smart key 20, the power supply 28 is a battery, preferably a lithium rechargeable battery It is preferable to use.

Here, the power supply unit 28 of the smart key 20 may be connected to the CPU 24 of the smart key 20 to display the battery capacity of the power supply unit 28.

In this case, the display of the battery capacity is not particularly limited as long as it is a display method capable of observing sound or visually.

On the other hand, the smart key 20 according to the present invention having the above-described configuration may be able to communicate with the digital door lock 40 as necessary.

At this time, the digital door lock 40 is configured to include a LF driver 42, RF communication unit 46, CPU 44 and / or the power supply unit 48 to enable communication with the smart key 20.

Here, the LF driver 42 continuously transmits the LF signal, and when the driver having the smart key 20 is located within 1 to 2 m from the vehicle, the LF driver 42 may transmit the LF signal transmitted from the LF driver 42 to the smart key 20. In order to be able to confirm that there is a qualified driver there is no particular limitation as long as it is a conventional LF driver in the art for this purpose.

In addition, the RF communication unit 46 is used for remote control, and transmits the ID of the smart key 20, preferably a fob key, to the vehicle, and receives the ID from the mobile communication terminal 10. It is for transmitting data to the vehicle or receiving information on the vehicle status.

The CPU 44 is connected to components constituting the digital door lock 40, for example, the LF driver 42, the RF communication unit 46, and / or the power supply unit 48, and the digital door lock 40. The overall operation of the can be controlled.

At this time, the locking / unlocking of the digital door lock 40 is performed according to the operation of the CPU 44.

The power supply unit 48 provided in the digital door lock 40 according to the present invention is for providing a current to the digital door lock 40, but may use a separate independent power supply means such as a battery, but is preferably a vehicle. It is good to be connected to the power supply of, for example, the vehicle battery.

Referring to the operation of the smart key device for a vehicle according to the present invention having such a configuration as follows.

First, the LF drivers 32 and 42 provided in the transmitter unit 30 and / or the digital door lock 40 according to the present invention connected to the vehicle receive an LF signal when receiving a signal for authentication from a periodic or vehicle outdoor door handle. Transmit to the vicinity of the vehicle.

At this time, when the user holding the smart key 20 is located close to the vehicle, the 3D antenna 25 of the smart key 20 receives the LF signal, the received LF signal is the CPU of the smart key 20 Controlled by 24 to transmit a signal for electronic authentication via the wireless communication unit 26 to the wireless communication unit 36 of the transmitter unit 30 and / or the RF communication unit 46 of the digital door lock 40.

Then, according to the signal of the smart key 20, the CPU 34, 44 provided in the transmitter unit 30 and / or the digital door lock 40 confirms the user's authority, thereby locking and / or steering the vehicle door. Releasing the lock and applying the engine to the engine ECU 50 allows the user to start the engine 60.

On the other hand, when the user holding the smart key 20 is located outside the LF signal range of the LF driver 32, 42 provided in the transmitter unit 30 and / or the digital door lock 40, the mobile communication terminal 10 When communicating with the Bluetooth antenna 22 of the smart key 20 and providing a signal requesting the state or information of the vehicle, the wireless communication unit 26 provided in the smart key 20 transmits the signal to the transmitter It transmits to the part 30.

In this case, the wireless communication unit 36 of the transmitter unit 30 receives a signal transmitted from the wireless communication unit 26 of the smart key 20, and the CPU 34 of the transmitter unit 30 according to the received signal. Controls the vehicle to match the signal or transmits the state or information of the vehicle to the wireless communication unit 26 of the smart key 20 through the wireless communication unit 36 of the transmitter unit 30.

Next, the signal received by the wireless communication unit 26 of the smart key 20 is provided to the mobile communication terminal 10 through the Bluetooth antenna 22 by the smart key 20 in accordance with the processing of the CPU 24. .

As described above, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all aspects. The scope of the present invention should be construed that all changes or modifications derived from the meaning and scope of the following claims and equivalent concepts rather than the detailed description are included in the scope of the present invention.

10: mobile communication terminal 12, 22: Bluetooth antenna
14: application
20: Smart Keys 24, 34, 44: CPU
25: 3D antenna 26, 36: wireless communication unit
28, 38, 48: power supply
30: transmitter 32, 42: LF driver
35: transponder
40: digital door lock 46: RF communication unit
50: engine ECU 60: start
70: Steering Locking / Unlocking

Claims (3)

A mobile communication terminal capable of Bluetooth communication;
A transmitter unit connected to one side of the vehicle and having a wireless communication unit, a CPU, a transponder, and an LF driver embedded therein;
Bluetooth communication with the mobile communication terminal, and a mobile communication terminal including a wireless communication unit, a 3D antenna, a CPU and a Bluetooth antenna embedded therein to enable wireless communication, LF communication or wireless communication and LF communication with the transmitter unit. Car smart key device that works with. The method of claim 1,
The smart key device for a vehicle is a smart key device for a vehicle that works with a mobile communication terminal further comprises a digital door lock including an LF driver for wireless communication with the smart key. The method of claim 1,
A smart key device for a vehicle interworking with a mobile communication terminal, characterized in that a power supply for providing a current inside the smart key is further provided.

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