KR20070081528A - Immobilizer system with separate antenna slot - Google Patents

Abstract

An immobilizer system for a vehicle with a separate antenna slot is provided to perform an immobilizer function even when a smart key is discharged, by allowing the smart key to be activated by the induced electromotive force when inserted into the antenna slot. An immobilizer system for a vehicle with a separate antenna slot, includes an antenna slot(30) having a groove; an antenna coil(32) arranged in the vicinity of the antenna slot; a connection line connected to the antenna coil; and an immobilizer controller connected to the antenna coil through the connection line. A smart key(40) which is equipped with a transmitting/receiving element, a controller, a secondary battery(48), and a transponder coil(47) is inserted in the antenna slot.

Description

Immobilizer System with separate antenna slot

1 is a view showing the internal structure of a typical vehicle.

2 is a block diagram of a system using a conventional PIC handset and an immobilizer key.

3 is a block diagram illustrating a connection structure between a conventional immobilizer key and a control device.

4 is a schematic diagram illustrating an immobilizer system of the present invention in which an antenna slot is separately provided.

Fig. 5 is a schematic diagram showing an immobilizer portable device and a state in which the portable device is inserted into an antenna slot of the present invention.

6 is a diagram illustrating an immobilizer portable device, an antenna slot, and an engine switch device.

7 is a view showing the internal structure of a vehicle to which the immobilizer system of the present invention is applied.

<Description of Signs of Major Parts of Drawings>

2: keybox 10: PIC mobile device

12 control unit 14 memory

16: receiving circuit 18: transmitting circuit

20: immobilizer key 22: transponder control unit

24 memory 26 transponder coil

28 key member 30 antenna slot

32: antenna coil 34: insertion groove

40: smart key 41: control unit

42: memory 43: receiving circuit

44: transmitting circuit 45: transponder control circuit

46: memory 47: transponder coil

48: secondary battery 50: button-type switch

52: button 60: rotary type switch

62: handle

The present invention relates to a smart key and an immobilizer system for determining the opening and closing of the door and the engine start allowance using wireless communication, more specifically can accommodate the smart key, and can automatically charge the secondary battery of the smart key. The antenna slot is provided separately from the key box or the start switch, so that the smart key can be positioned in various positions in various shapes, and the function is continuously maintained in the antenna slot even when the secondary battery of the smart key is discharged. It relates to an immobilizer system that can be performed.

In general, as a device for opening and closing the door of the car and starting the engine, the mechanical structure of the key and the lock structure is the mainstream, and to supplement this, the main controller is installed inside the vehicle and stored in the main controller. Only a driver with a remote control that has the same password as the password can open and close the vehicle door and turn the starting power on and off.

However, the devices have a key to open and close the door and mechanically operate it on the lock, or it is cumbersome because the door of the vehicle is opened and started only when the driver operates the buttons installed on the remote controller. There is a problem that malfunction frequently occurs due to the interference of electromagnetic waves generated from various electronic devices around.

A system for solving this problem has recently been introduced, which is a PIC (Personal Identification Card) system and an immobilizer system that opens and closes a door without a key or remote control using a wireless communication method. According to this system, when a driver of a vehicle approaches the vehicle with a portable device or card without using a car key, the door lock is automatically released and the driver simply moves away from the vehicle with the portable card. It is a system that locks the door automatically and acts as a burglar alarm after the door is locked.

This conventional system will be described with reference to the drawings. 1 is a view showing the internal structure of a typical vehicle, Figure 2 is a block diagram of a system using a conventional PIC portable and immobilizer key, Figure 3 is a view for explaining the connection structure between the conventional immobilizer key and the control device It is a block diagram. 1 to 3, the keybox 2 is generally located on the right side of the handle. The immobilizer key 20 is inserted into the key box 2, and is provided with a PIC mobile phone 10 separately.

The PIC mobile phone 10 carried by the user includes a control unit 12 such as an IC chip, a receiving circuit 16 and a transmitting circuit 18. The receiving circuit 16 and the transmitting circuit 18 each include an antenna. The control unit 12 includes a memory 14 that stores an identification code. The receiving circuit 16 receives the request signal from the vehicle via the antenna and provides the request signal to the control unit 12. In response to the request signal, the control unit 12 reads the identification code from the memory 14 and provides an identification code signal to the transmitting circuit 18. Upon receiving the identification code signal from the control unit 12, the transmitting circuit 18 transmits the identification code signal via the antenna.

The PIC module 110 installed in the vehicle includes a PIC electronic control unit (ECU) 112, a transmitting circuit 116, and a receiving circuit 118. The PIC electronic controller 112 includes a memory 114 for storing an identification code exclusive to the vehicle, and the transmitting circuit 116 and the receiving circuit 118 are each provided with an antenna. The PIC electronic controller 112 intermittently provides a request signal to the transmission circuit 116, and the transmission circuit 116 transmits the request signal within a range near the vehicle via the antenna.

The receiving circuit 118 receives the identification code signal transmitted from the PIC mobile device 10 via the antenna and provides the identification code signal to the PIC electronic controller 112. The PIC electronic controller 112 compares the identification code signal from the PIC mobile phone 10 with the identification code stored in the memory 114, and if it matches, the PIC electronic controller 112 supplies the power supply ECU 130. Signal to the lock to provide an unlock signal.

At this time, the user can ride in the vehicle without using a key or controlling a remote control due to the PIC mobile device 10. The user then inserts the immobilizer key 20 into the keybox 2. Inside the immobilizer key 20, a transponder control circuit 22 and a transponder coil 26 are provided, and a metal key member 28 is provided outside. The transponder control circuit 22 includes a memory 24.

When the immobilizer key 20 is inserted into the key box 2, the transponder coil 26 generates induced electromotive force by the magnetic field of the antenna coil 126 embedded around the key box 2, and the induced electromotive force Power is charged in the capacitor C, and the transponder TRANSPONDER T circuit 22 outputs the encryption recognition code of the memory 24 by the power supplied from the capacitor C, and outputs the encrypted encryption code. The identification code is wirelessly transmitted to the antenna coil 126 via the transponder coil 26. The encryption recognition code received at the antenna coil 126 is applied to the immobilizer control device 120, and the immobilizer control device 120 determines whether the received encryption recognition code matches the encryption recognition code set in the memory to be matched. In this case, a predetermined signal is applied to the power supply ECU 130 to enable the vehicle to start. At this time, if the received encryption code does not match, the engine is prohibited from starting to prevent theft of the vehicle.

Recently, an embodiment in which the PIC mobile unit 10 and the immobilizer key 20 are integrated to enable all of the user confirmation, door opening, and immobilizer functions in one configuration is also used.

There have been two problems with this conventional configuration and system. Firstly, when the PIC portable device is discharged, transmission / reception operation is stopped so that the user can not recognize the vehicle and open the door. Secondly, the transponder coil and the antenna coil are contacted with each other through the key box. Closer approach is difficult.

In more detail, the PIC module 110 transmits a long wave of 100 to 200 KHz, and the PIC mobile phone 10 transmits a short wave of 300 to 500 MHz in response thereto. When the short-wave transmission of the PIC mobile phone 10 is supplied with power through the internal battery, when all the power of the battery is exhausted it will not be able to transmit radio waves will lose its function.

In this case, in order to perform the immobilizer function, a key provided with the transponder coil 26 is inserted into the key box 2, and the transponder control circuit 22 is activated by inducing electromotive force by the antenna coil 126. Let's go.

However, in this case, when the key is plugged into the keybox, power is supplied by induced electromotive force.There is a limitation that the distance between the coil and the antenna is not closely located with the keybox interposed therebetween. do. In addition, since the key box and the key bundle itself are made of metal, the transmission and reception efficiency is reduced or the antenna efficiency is reduced, and communication errors and abnormalities between the high frequency transmission and reception means may occur according to surrounding conditions.

The present invention is to provide a system that can be installed in any position by separating the antenna slot, and the smart key is inserted into the antenna slot, so that the distance between the coil and the antenna coil inside the smart key to be in close contact. The purpose.

In addition, as the coil inside the smart key and the antenna coil of the antenna slot is closer, it is to provide a system with improved performance to charge the smart key to communicate without a separate power supply, or to charge the secondary battery of the smart key. .

Another object of the present invention is to provide a system capable of transmitting and receiving in a long wave directly in the antenna slot when there is no power inside the smart key.

In addition, since the present invention does not use a key box, it is possible to use a separate start button or a rotary switch, to provide a system that can be set to various ways, and also to set the smart key to a variety of locations The purpose.

The configuration of the present invention for achieving the above object, an antenna slot having an insertion groove, an antenna coil disposed in the vicinity of the antenna slot, a connecting line connected to the antenna coil and the connection by the connecting coil and the antenna coil And an immobilizer control device, wherein a smart key including a transmitting and receiving means for transmitting and receiving radio waves, a control means, a secondary battery, and a transponder coil is inserted into the antenna slot.

The antenna slot is characterized in that separated from the immobilizer control unit is installed in a remote position.

The transponder coil is characterized in that to charge the secondary battery through the induced electromotive force generated by the current flowing through the antenna.

The transponder coil and the antenna may be configured to determine whether the vehicle can be started after verifying whether the smart key is suitable for the vehicle while exchanging signals with each other.

One side of the inside of the vehicle further includes a switch for starting, the switch is characterized in that the button type or rotary rotary method.

The antenna coil is characterized in that it is disposed on the outer side of the insertion groove.

Hereinafter, with reference to an embodiment of the configuration of the present invention shown in the accompanying drawings, it will be described in detail the configuration of the present invention.

4 is a schematic diagram illustrating an immobilizer system of the present invention in which an antenna slot is separately provided. Referring to FIG. 4, the immobilizer control device 120 is remotely connected with an antenna slot 30 without a separate key box, and an antenna coil 32 is wound around the antenna slot 30 and inserted into the antenna slot 30. Grooves are formed. The antenna coil 32 is connected to the immobilizer control device 120.

The immobilizer control device 120 and the antenna slot 30 can be individually arranged remotely by a line connected to the antenna coil 32, there is no separate key box can be installed in the desired position. In addition to transmitting and receiving an identification code through the antenna coil 32, power may flow in the antenna coil 32 so that induced electromotive force may be generated in an internal space thereof.

Fig. 5 is a schematic diagram showing an immobilizer portable device and a state in which the portable device is inserted into an antenna slot of the present invention. Referring to FIG. 5, (a) is a block diagram showing the configuration of a smart key (FOB) 40 in which the configuration of the PIC portable device 10 and the immobilizer key 20 is integrated, and (b) is a smart device. A block diagram showing a state in which the key 40 is inserted into the antenna slot 30.

The smart key 40 as shown in (a) enables the personal identification of the vehicle and the door opening by the control unit 41 and the transmission and reception circuits 43 and 44 while accessing the vehicle, and the transponder control circuit 45 And the transponder coil 47 enable the vehicle to be started. At this time, the secondary battery 48 is used for various recognition and transmission and reception operations. Various operations of the smart key 40 are possible through the transmission and reception of radio waves even if not inserted into the antenna slot 30 as shown in (b).

After the user boards the vehicle, the smart key 40 is inserted into the antenna slot 30 of the present invention. At this time, the transponder coil 47 and the antenna coil 32 are disposed in close proximity to each other in a structurally close position. The transponder coil 47 and the antenna coil 32 in the antenna slot 30 transmit and receive through a long wave to perform an immobilizer function. At this time, while the transponder coil 47 is activated by the induced electromotive force of the transponder coil 47, mutual signals are transmitted and received.

On the other hand, the secondary battery 48 necessary for remote transmission and reception is also charged by the transponder coil 47. The secondary battery 48 is continuously charged by the induced electromotive force between the transponder coil 47 and the antenna coil 32. Therefore, when the user boards the vehicle, the smart key 40 is simply inserted into the antenna slot 30 and stored therein, thereby reducing the risk of the smart key 40 being discharged. In addition, even if the smart key 40 is discharged as described above, as soon as it is inserted into the insertion groove of the antenna slot 30, the circuit is activated by the induced electromotive force to enable the functional operation. In some cases, a coil for charging the secondary battery 48 may be separately provided to operate separately from the transponder coil 47 for the immobilizer function. In the description and the claims of the present invention, this is generically referred to as a transponder coil. do.

In general, when the smart key 40 is outside, the smart key 40 receives the long wave from the vehicle, and correspondingly transmits the microwave or microwave to the vehicle through the power of the secondary battery. When the smart key 40 is inserted into the slot, the smart key 40 is transmitted and received through the long wave with each other.

On the other hand, when the smart key 40 is discharged it is possible to enable whether or not to start the vehicle in the above manner, in some cases to install the antenna slot 30 to the outside of the vehicle door to open the vehicle It is also possible. However, if this is difficult in structure, it is possible to physically open the door by using a separate auxiliary key to open the vehicle door.

6 is a diagram illustrating an immobilizer portable device, an antenna slot, and an engine switch device. Referring to Figure 6, (a) is a view showing a state in which the smart key 40 is inserted into the insertion groove 34 of the antenna slot 30, (b) and (c) is a smart key 40 Since only a separate antenna slot 30 is inserted, it is a diagram for showing that the engine switch device can be variously selected as the button type 50 or the rotary type 60.

Since the antenna slot 30 does not need to perform an engine switching function, the antenna slot 30 may be installed at various positions according to user convenience. Therefore, it is not necessary to arrange around the handle as in the related art, and it can be applied to various positions such as an instrument panel, a gear panel part, a door part, and a ceiling part according to the user's convenience.

In addition, it is possible to use the button 52 as a switch for starting the engine, or to use the lever-type rotary knob 62, there is an effect that can promote the taste and taste of the user.

7 is a view showing the internal structure of a vehicle to which the immobilizer system of the present invention is applied. Where the conventional key box was located a simple type of button-type engine switch 50, the smart key 40 can be plugged into the antenna slot 30 provided in a separate position. The antenna slot 30 can be freely installed at a position separate from the engine ignition switch, and the coil and the antenna are closely disposed at the nearest position while the smart key 40 is inserted into the antenna slot 30 to charge and Transmit and receive functions efficiently.

In describing the operation and method of using such a system, when a user approaches a vehicle with a smart key in accordance with communication between the vehicle and the smart key, the door or trunk can be operated without a separate key insertion or button operation. It becomes possible to open and close (PIC function). After the user boards the vehicle, the user can start the vehicle without having to insert a key just by having a smart key (immobilizer function). At this time, the smart key may be carried in the pocket, but when it is inserted into the antenna slot, the smart key is charged and at the same time directly communicates with each other in close proximity, thereby preparing for high frequency transmission and reception abnormalities.

If the power of the smart key is discharged, open the door of the vehicle through a separate auxiliary key and plug the smart key into the antenna slot to enable long-wave communication authentication by induced electromotive force inside the antenna slot. The function is restored and the secondary key of the smart key is charged. In some cases, the antenna slot is exposed to the outside of the vehicle, and by inserting or accessing a smart key into the antenna slot without a separate auxiliary key, the door can be opened while the internal circuit is activated. It may be configured to be charged.

In addition, since the smart key is fixedly located in the antenna slot, it is possible to send and receive signals closely and quickly, and from the user's point of view, the smart key is stored in a certain position, thereby reducing the risk of inconvenience or loss of storage. In addition, since the antenna slot and the start switching device are separately separated, the start switching device can be variously configured as a button type or a rotary rotation type, and the position of the antenna slot can be variously set.

The present invention allows the antenna slot to be removed and installed at any position, and the smart key is inserted into the antenna slot, thereby improving the transmission and reception efficiency and charging efficiency of the smart key.

In addition, the present invention is activated by the induced electromotive force while the smart key is inserted into the antenna slot to directly communicate with each other, not only can perform the immobilizer function during discharge, but also to prevent the occurrence of high frequency transmission and reception abnormalities Have

In addition, the present invention has an effect that can be used semi-permanently without replacing the battery of the smart key by charging the secondary battery by the induced electromotive force while the smart key is inserted into the antenna slot.

In addition, since the present invention does not use a key box, a separate start button, a rotary switch can be used, and the method can be set in various ways, and the smart key can be set to be plugged into various positions, so that the user's taste and Has the effect of providing a variety of structures to suit your choice.

Claims (6)

An antenna slot having an insertion groove; An antenna coil disposed in the vicinity of the antenna slot; A connection line connected to the antenna coil; And And an immobilizer control device connected to the antenna coil by the connecting line. Transmitting and receiving means for transmitting and receiving radio waves in the antenna slot; Control means; Secondary battery; And a transponder coil; Immobilizer system provided with a separate antenna slot, characterized in that the smart key is inserted. The method of claim 1, And the antenna slot is separated from the immobilizer control device and is installed at a remote location. The method of claim 1, The transponder coil is an immobilizer system having a separate antenna slot, characterized in that for charging the secondary battery through the induced electromotive force generated by the current flowing through the antenna. The method of claim 1, The transponder coil and the antenna transmit and receive signals to each other, After verifying that the smart key is suitable for the vehicle, An immobilizer system having a separate antenna slot for determining whether the vehicle can be started. The method of claim 1, One side of the vehicle further includes a switch for starting, The switch is an immobilizer system having a separate antenna slot, characterized in that the button or rotary rotation method. The method of claim 1, The antenna coil is provided with a removable antenna slot, characterized in that disposed in the outer side of the insertion groove.

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