JP2008196228A - Smart keyless device of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a smart keyless device of a vehicle which can provide an immobilizer function thereto without separately setting a radio-signal generation means or an aerial used for sending a radio signal. <P>SOLUTION: Either the predetermined radio-signal generation means or the aerial used for sending a radio signal used for the smart keyless authentication communication (s2, s3) is shared with the radio-signal generation means or an aerial used for transmitting and receiving a radio signal used for the immobilizer authentication communication (s5, s6). Then the smart keyless control means is provided with the receiving means for the immobilizer authentication communication and a startup control means. The receiving means for the immobilizer authentication communication performs receiving control of a radio signal from the transponder received by the aerial used for transmitting and receiving the radio signal used for the immobilizer authentication communication which is shared (s6). The startup control means performs startup control of an engine (s8) based on the received signal from the receiving means used for the immobilizer authentication communication. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides a smart vehicle having smart keyless control means for performing lock / unlock control of a vehicle door when an identification code of an in-vehicle device mounted on the vehicle matches an identification code of a portable device carried by a passenger. It relates to a keyless device.

  In recent years, smart keyless systems have been put into practical use. In the smart keyless system, the portable device plays the role of a conventional mechanical key. For example, if a card-like portable device is carried in a pocket or bag, the door can be locked / unlocked without taking out and operating the key (see Patent Document 1). .

  In order to realize such a function, the portable device incorporates a transmission antenna that transmits a dedicated identification code in accordance with a radio signal from a radio signal transmission antenna on the vehicle-mounted device side. In addition to the radio signal transmitting antenna, a radio signal generating circuit (means) for generating the radio signal is provided on the in-vehicle device side, and the identification code received from the portable device is the identification code of the in-vehicle device. A smart keyless control unit that permits operations such as locking and unlocking the door when it matches is installed.

  By the way, some smart keyless devices that realize the above smart keyless system perform an engine start operation by predetermined wireless communication. Such a system at the time of engine start is called an immobilizer system, It is well known as a system for preventing theft.

  In order to realize such a function, the portable device is provided with a transponder capable of transmitting an engine start identification code (referred to as a key identification code) in accordance with a radio signal from a radio signal transmission antenna on the in-vehicle device side. On the in-vehicle device side, a radio signal generation circuit (means) dedicated to an immobilizer system for generating a radio signal to the transponder is provided in addition to the radio signal transmitting antenna.

In this case, it is determined whether or not the key identification code of the transponder received by wireless communication between the transponder and the in-vehicle device matches the key identification code registered in the storage device of the engine control unit in advance. If they match, the engine control unit permits the engine start operation.
JP 2002-194937 A

  However, in order to realize such a system, two wireless signal generation circuits (means) similar to the vehicle-mounted device and the transmission are used in spite of not communicating with the transmission antenna and the transponder of the portable device. An antenna was needed. For this reason, the configuration of the smart keyless device has been complicated.

  An object of the present invention is to provide a smart keyless device for a vehicle that can have an immobilizer function without separately providing a radio signal generating means and a radio signal transmitting antenna.

  The smart keyless device for a vehicle according to the present invention is a smart keyless control means for performing lock / unlock control of the door of the vehicle when the identification code of the in-vehicle device mounted on the vehicle matches the identification code of the portable device carried by the occupant. A smart keyless device for a vehicle having a wireless signal generating means for smart keyless authentication communication and a wireless signal transmitting antenna for communicating with the portable device when determining whether or not the identification codes match The predetermined one is shared as an immobilizer authentication communication radio signal generating means and a radio signal transmitting / receiving antenna for performing start control by communicating with a transponder when the engine is started, and is also shared by the smart keyless control means. No response from the transponder received by the radio signal transmitting / receiving antenna for immobilizer authentication communication. A receiving unit for the immobilizer authentication communication receiving control signals, in which a start control means for starting control of the engine based on the received signal from the immobilizer authentication communication receiving means.

  According to this configuration, a smart keyless device having an immobilizer function can be obtained without providing a radio signal generating means for immobilizer authentication communication and a radio signal transmitting / receiving antenna, and the wireless signal generating means for smart keyless authentication communication and It is possible to construct using a radio signal transmitting antenna.

  In one embodiment of the present invention, the start control means performs a start control of the engine based on a received signal from a smart keyless authentication communication receiving means for receiving and controlling a radio signal from the portable device. Control means and second start control means for performing start control of the engine based on the received signal from the immobilizer authentication communication receiving means for receiving and controlling the radio signal from the transponder.

  According to this configuration, it is possible to achieve both engine start control by smart keyless authentication communication control and engine start control by immobilizer authentication communication control.

  In one embodiment of the present invention, the portable device includes the transponder, and the driver uses the shared radio signal transmitting / receiving antenna for immobilizer authentication communication around the driver's seat in the passenger compartment. It is set to a position where the portable device can be accessed.

  According to this configuration, when the immobilizer authentication communication control is executed, the driver can easily access the wireless signal transmission / reception antenna by the portable device including the transponder.

  In one embodiment of the present invention, the shared radio signal transmitting / receiving antenna for immobilizer authentication communication is set at a position in the center of the vehicle width direction on the front side of the passenger compartment.

  According to this configuration, since the transmission area of the antenna can be formed symmetrically without any bias, it is possible to eliminate wasteful provision of the antenna on both the left and right sides in consideration of smart keyless authentication communication.

  In one embodiment of the present invention, the frequency band of the radio signal transmitted to the portable device during the smart keyless authentication communication and the frequency band of the radio signal transmitted to the transponder during the immobilizer authentication communication are set to be the same. It is.

  According to this configuration, communication at the time of smart keyless authentication communication and communication at the time of immobilizer authentication communication can be shared.

  According to the present invention, a smart keyless device having an immobilizer function can be obtained without providing a radio signal generating means for immobilizer authentication communication and a radio signal transmitting / receiving antenna, and the wireless signal generating means for smart keyless authentication communication and It is possible to construct using a radio signal transmitting antenna.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a smart keyless device for a vehicle according to an embodiment of the present invention. This smart keyless device includes an immobilizer system in which a transponder 1a as a key identification code transmitting means for wirelessly transmitting a key identification code is incorporated in an emergency key 1 to prevent the vehicle from being stolen, The passenger locks / unlocks the door of the vehicle by carrying the portable device 2 including the portable device identification code transmitter 2a as a portable device identification code transmitting means for wirelessly transmitting the portable device identification code. In addition, it is combined with a smart keyless system that can perform start control of a vehicle engine.

  In FIG. 1, a transponder 1 a (emergency key 1) is provided in a portable device 2, and a passenger can carry the transponder 1 a together with the portable device 2.

  In the present embodiment, the in-vehicle device mounted on the vehicle includes smart keyless control means 3 for communicating with the transponder 1a and the portable device identification code transmitter 2a. The smart keyless control means 3 includes a smart keyless control unit 31 that controls a door lock actuator 4 described later, and an immobilizer control unit 32 that can receive a signal from an engine start switch 5 described later.

  The smart keyless control unit 31 is provided with a storage device 31a as storage means, and this storage device 31a has the same key as the key identification code registered and stored in the storage device 6a provided in the engine control unit 6 described later. An identification code (that is, the same key identification code as the regular emergency key 1 set for the vehicle) is registered and stored.

  The smart keyless control means 3 includes a smart keyless LF transmitting antenna 8a to 8d described later, a smart keyless LF driving circuit 33, an LF driving / receiving combined circuit 34 connected to the LF transmitting / immobilizer receiving combined antenna 8e, and a mobile phone. An RF receiving circuit 35 connected to the machine identification code receiver 7 is further provided.

  In the present embodiment, for example, four smart keyless LF transmitting antennas 8a to 8d configured by coils that generate an LF magnetic field and one LF transmitting / immobilizer receiving antenna 8e are installed, and the smart keyless LF driving circuit 33 is provided. The LF driving / receiving circuit 34 operates so as to sequentially transmit LF signals (LF magnetic fields) from these LF transmitting antennas 8a to 8e.

  FIG. 2 is a diagram illustrating an example of transmission areas of the smart keyless LF transmission antennas 8a to 8d and the LF transmission / immobilizer reception antenna 8e. 8a is a D seat antenna provided near the driver's seat (hereinafter referred to as “D seat”), 8b is a P seat antenna provided near the passenger seat (hereinafter referred to as “P seat”), and 8c is near the rear gate (not shown). A rear gate antenna 8d is provided in the vicinity of the rear seat, and a vehicle interior rear antenna 8d.

  In addition, the antenna for both LF transmission / immobilizer reception 8e is provided in the vehicle width direction between the D seat and the P seat on the front side of the passenger compartment R (a region surrounded by a one-dot chain line in the figure) as shown in FIG. It is provided in a substantially central part. The LF transmission / immobilizer reception antenna 8e is disposed, for example, below the center console 10 that extends rearward from the instrument panel 9 as indicated by a one-dot chain line in the figure. As shown in FIG. 3, the center console 10 is provided with a cup holder 11, a shift lever 12, and a parking brake 13. In this case, the LF transmission / immobilizer reception antenna 8e is, for example, shown by a two-dot chain line. It is disposed directly below the bottom surface portion 11a of the cup holder 11, or directly below the recess 10a formed below the parking brake 13.

  As shown in FIG. 2, the smart keyless LF transmitting antennas 8a to 8d and the LF transmitting / immobilizer receiving antenna 8e arranged at appropriate positions in the vehicle are switched according to the purpose. Different transmission areas (that is, detection areas of the portable device 2) are formed. Here, the D-seat antenna 8a and the P-seat antenna 8b are antennas used both in the passenger compartment R and outside the vehicle.

  In FIG. 2, areas A, B, C, D, and E indicated by thick solid lines are the transmission area of the antenna 8a for the D seat, the antenna 8b for the P seat, the antenna 8c for the rear gate, and the antenna 8d for the rear of the vehicle interior, respectively. Transmission area of the LF transmission / immobilizer reception antenna 8e. These five antennas cover almost all areas in the vehicle interior R.

  By the way, the portable device identification code transmitter 2a of the portable device 2 shown in FIG. 1 can receive the LF signals of the smart keyless LF transmission antennas 8a to 8d and the LF transmission / immobilizer reception antenna 8e of the vehicle. When the portable device 2 is carried and in the area A or the region B outside the passenger compartment R, the portable device identification code transmitter 2a receives the LF signal, thereby transmitting the portable device identification code to the wireless response signal. To send as. The portable device identification code is received by the RF receiving circuit 35 via the portable device identification code receiver 7. Here, as the wireless response signal transmitted from the portable device identification code transmitter 2a, for example, an RF signal (radio wave) such as a UHF signal having a frequency region higher than that of the LF signal is used.

  In addition, a different code is set for each portable device 2 as the portable device identification code. In the smart keyless control unit 31, the portable device identification code received via the portable device identification code receiver 7 is preliminarily smart keyless. Whether or not the portable device 2 is genuine for the vehicle is determined based on whether or not it matches the portable device identification code registered in the storage device 31a of the control unit 31 (that is, the identification code of the vehicle-mounted device). At the time of normal determination, which is a determination that the portable device 2 is genuine (the received portable device identification code matches the registered portable device identification code), the distance between the vehicle and the passenger, that is, the passenger is The door lock actuator 4 is operated in accordance with the received electric field strength of the wireless response signal transmitted from the portable device identification code transmitter 2a of the portable device 2 to lock and unlock the door of the vehicle. To lock.

  That is, when the distance between the vehicle and the occupant is smaller than a predetermined value (the reception electric field strength is larger than the predetermined value), the door is unlocked, while the distance between the vehicle and the occupant is equal to or larger than the predetermined value (the reception When the electric field strength is below a predetermined value), the door is locked. The door can be locked / unlocked by a lock / unlock switch (not shown) of the portable device 2 or a request switch (not shown) provided on the door knob or the like. .

  Next, when the occupant enters the vehicle compartment R with the portable device 2 carried (when the portable device 2 is in the vehicle compartment R), it is transmitted from the portable device identification code transmitter 2a of the portable device 2. The portable device identification code is received via the portable device identification code receiver 7.

  Even when the smart keyless control unit 31 receives the portable device identification code transmitted from the portable device identification code transmitter 2a of the portable device 2 in the passenger compartment R, the portable device 2 is controlled based on the portable device identification code. It is determined whether or not it is legitimate.

  That is, whether or not the portable device 2 is genuine for the vehicle depending on whether or not the portable device identification code received via the portable device identification code receiver 7 matches the registered portable device identification code. When the mobile device 2 is genuine, the mobile device 2 is genuine (the received mobile device identification code matches the mobile device identification code registered in the smart keyless control unit 31). The keyless control unit 31 transmits to the engine control unit 6 a key identification code registered in its own storage device 31a, that is, the same key identification code as the regular emergency key 1 set for the vehicle. ing.

  Further, when the portable device 2 is not authorized (ie, the received portable device identification code does not match the registered portable device identification code), the key identification code is transmitted to the engine control unit 6. Don't do that. Hereinafter, the control of the smart keyless control means 3 when this portable device identification code is received is referred to as smart keyless authentication communication control.

  By the way, in the smart keyless device according to the present embodiment, at the time of the smart keyless authentication communication in order to cope with an emergency when the portable device 2 is out of order or the power source battery of the portable device 2 is dead. One of the LF transmitting antennas 8a to 8e used (transmitting LF transmitting / immobilizer receiving antenna 8e) is connected to the LF driving / receiving combined circuit 34, whereby the LF transmitting / immobilizer receiving antenna 8e is used as an emergency. The key identification code can be received from the transponder 1a while the LF signal can be transmitted to the transponder 1a of the key 1.

  For example, when the regular portable device identification code is not transmitted from the portable device identification code transmitter 2a at the timing of determining whether or not the regular portable device 2 is present in the passenger compartment R of the vehicle, 2 is assumed to be an emergency in which communication with the portable device identification code transmitter 2a cannot be performed due to battery exhaustion or failure, and the LF transmission / immobilizer reception antenna 8e transmits an LF signal to the transponder 1a. Yes.

  The key identification code transmitted from the transponder 1a of the emergency key 1 is set differently for each emergency key 1, and the transponder 1a receives the LF signal from the LF transmission / immobilizer reception antenna 8e. The key identification code is transmitted as a wireless response signal. This key identification code is received by the LF drive / reception circuit 34 via the LF transmission / immobilizer reception antenna 8e.

  The key identification code received in this way is finally transmitted to the engine control unit 6 that controls the engine of the vehicle by the smart keyless control unit 31 and the immobilizer control unit 32. Hereinafter, the control of the smart keyless control means 3 when receiving this key identification code is referred to as immobilizer authentication communication control.

  The engine control unit 6 is provided with a storage device 6a similar to the smart keyless control unit 31, and the same key identification code as the regular emergency key 1 is registered and stored in the storage device 6a (What is the engine control unit 6? It may be registered and stored in another storage device or the like). The engine control unit 6 registers the key identification code transmitted by the smart keyless control unit 31 and the immobilizer control unit 32 when the emergency key 1 or the portable device 2 is properly registered in the storage device 6a of the engine control unit 6. It is determined whether or not it coincides with the key identification code, and when it coincides, the engine of the vehicle is controlled to start.

  That is, the key identification code transmitted when the emergency key 1 or the portable device 2 is properly determined by the smart keyless control unit 31 and the immobilizer control unit 32 matches the key identification code registered in the engine control unit 6. When the key identification code is received, the engine control unit 6 determines that the key identification code matches the registered key identification code, thereby starting control of the vehicle engine.

  As described above, in this embodiment, the LF driving circuit (LF driving / reception combined circuit 34) for smart keyless authentication communication and a predetermined one of the LF transmission antennas (LF transmission / immobilizer receiving combined antenna 8e) are used for immobilizer authentication. The LF drive circuit for communication and the LF transmission / reception antenna are shared, and the LF drive / reception circuit 34 is configured to receive and control the key identification code from the transponder 1a. The immobilizer control unit 32 Engine control is performed on the basis of a received signal from the driving / receiving circuit 34. Therefore, a smart keyless device having an immobilizer function is constructed using an LF drive circuit and a transmission antenna for smart keyless authentication communication without providing an LF drive circuit and a transmission / reception antenna for immobilizer authentication communication separately. Is possible.

  In addition, the radio signal transmitted by the antenna LF transmission / immobilizer reception antenna 8e during immobilizer authentication communication and the radio signal transmitted by the smart keyless LF transmission antennas 8a to 8d and the antenna LF transmission / immobilizer reception antenna 8e during smart keyless authentication communication Are also LF signals and are set to the same frequency band. For this reason, communication at the time of smart keyless authentication communication and communication at the time of immobilizer authentication communication can be made common.

  In addition, the smart keyless device according to the present embodiment includes a smart keyless control unit that performs engine start control based on a received signal from the RF receiver circuit 35 that receives and controls the portable device identification code from the portable device identification code transmitter 2a. 31 and an immobilizer control unit 32 that performs engine start-up control based on a received signal from the LF driving / receiving circuit 34 that controls reception of the key identification code from the transponder 1a. It is possible to achieve both the engine start control by the engine and the engine start control by the immobilizer authentication communication control.

  In addition, the LF transmission / immobilizer reception antenna 8e is provided at a substantially central portion in the vehicle width direction between the D seat and the P seat on the front side of the passenger compartment R, so that an occupant around the D seat in the passenger compartment R is provided. (Hereinafter referred to as the driver) is in a position where the portable device 2 can be accessed. Therefore, when the immobilizer authentication communication control is executed, the driver can easily access the portable device 2 including the transponder 1a to the LF transmission / immobilizer reception antenna 8e.

  For example, when the antenna for both LF transmission / immobilizer reception 8e is arranged at the position shown in FIG. 3, the driver puts the emergency key 1 (portable device 2) below the bottom surface portion 11a of the cup holder 11 or the parking brake 13. Communication for the immobilizer authentication can be performed by placing the concave portion 10a.

  In particular, by providing the antenna for both LF transmission / immobilizer reception 8e at the substantially central portion in the vehicle width direction of the passenger compartment R, the transmission area indicated by the region E can be formed symmetrically and without bias, so smart keyless authentication communication can be performed. In view of this, it is possible to eliminate the waste of providing the antennas on both the left and right sides.

  Conventionally, a mechanical key with a built-in transponder is used as an emergency key, and the immobilizer authentication communication transmitting / receiving antenna has the mechanical key inserted into a key cylinder of a steering column (not shown) in the D seat. At times, it is provided on the outer periphery of the key cylinder so that it can communicate with the transponder. In such a configuration, since a large antenna coil is required on the outer periphery of the key cylinder, there is a problem that the layout of other in-vehicle devices to be installed around the D seat is limited.

  On the other hand, in the present embodiment, since the LF transmission / immobilizer reception antenna 8e is disposed at a place other than the steering column, it is possible to avoid the layout limitation as described above.

  Hereinafter, immobilizer authentication communication control executed by the smart keyless control means 3 will be described with reference to the flowchart of FIG.

  In order to actually execute the engine start control as described above, first, the driver carrying the portable device 2 (emergency key 1) in the passenger compartment R needs to rotate the engine start switch 5. There is.

  When the driver operates the engine start switch 5 (step s1), first, the smart keyless control means 3 shifts to the detection timing of the portable device 2, and the smart keyless control unit 31 includes the smart keyless LF drive circuit 33 and The LF drive / reception dual circuit 34 is operated to sequentially transmit LF signals to the smart keyless LF transmission antennas 8a to 8d and the LF transmission / immobilizer reception dual antenna 8e (step s2).

  At this time, if there is a normal response to the LF signal transmission of any one of the smart keyless LF transmission antennas 8a to 8d and the LF transmission / immobilizer reception antenna 8e (from the portable device identification code transmitter 2a to the regular portable device identification code). Is transmitted to the portable device identification code receiver 7 (step s3: YES), the smart keyless control unit 31 executes smart keyless authentication (step s4), and if there is no regular response (step s3: NO) ) Assuming that it is an emergency such as a failure of the portable device 2, the immobilizer control unit 32 activates the LF drive / reception combined circuit 34 to transmit the LF signal from the LF transmission / immobilizer reception combined antenna 8e (step s5). ).

  Here, even if the LF signal is transmitted from the LF transmission / immobilizer reception antenna 8e and there is no regular response from the transponder 1a (unless the key identification code is transmitted to the LF transmission / immobilizer reception antenna 8e) ( In step s6: NO), the smart keyless control unit 31 returns the process, and if there is a regular response (step s6: YES), the LF drive / reception combined circuit 34 via the LF transmission / immobilizer reception combined antenna 8e. The key identification code received in step (1) is transferred to the immobilizer control unit 32.

  Finally, the key identification code is transmitted from the immobilizer control unit 32 to the engine control unit 6, and immobilizer authentication is executed (step s7). As soon as the smart keyless authentication in step s4 or the immobilizer authentication in step s7 is completed, the engine start is permitted (step s8).

  In addition, in step s7 of FIG. 4, although immobilizer authentication was performed with the engine control unit 6, it is not necessarily limited to this. For example, the immobilizer authentication may be executed by the smart keyless control unit 31 by using the fact that the key identification code is stored in the storage device 31 a of the smart keyless control unit 31. In this way, when immobilizer authentication communication control is performed, it is possible to reduce the processing load of the engine control unit 6 when the engine is started.

  In the above-described embodiment, the engine start control based on the smart keyless authentication communication control and the engine start control based on the immobilizer authentication communication control are configured to be compatible. However, the present invention is not necessarily limited to this, and the smart keyless control unit is not necessarily limited thereto. 31 may perform only door lock / unlock control.

  In the above-described embodiment, the portable device 2 includes the transponder 1a (emergency key 1). However, in the present invention, the portable device 1 is disclosed in, for example, Japanese Patent Application Laid-Open No. 2005-170193. On the other hand, a configuration in which the emergency key 1 is detachable is also included.

In correspondence between the configuration of the present invention and the above-described embodiment,
The wireless signal generating means for smart keyless authentication communication according to the present invention corresponds to the smart keyless LF driving circuit 33 and the LF driving / receiving circuit 34,
Similarly,
The wireless signal transmitting antenna for smart keyless authentication communication corresponds to the smart keyless LF transmitting antennas 8a to 8d and the LF transmitting / immobilizer receiving antenna 8e,
The radio signal generating means for immobilizer authentication communication corresponds to the LF driving / receiving circuit 34,
The radio signal transmitting / receiving antenna for immobilizer authentication communication corresponds to the antenna for both LF transmission / immobilizer reception 8e,
The immobilizer authentication communication receiving means corresponds to the LF driving / receiving circuit 34,
The start control means corresponds to the smart keyless control unit 31 and the immobilizer control unit 32,
The receiving means for smart keyless authentication communication corresponds to the RF receiving circuit 35,
The first start control means corresponds to the smart keyless control unit 31,
The second start control means corresponds to the immobilizer control unit 32,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

The block diagram which shows the structure of the smart keyless apparatus of the vehicle which concerns on embodiment of this invention. The figure which shows the example of the transmission area of each smart keyless LF transmission antenna. The perspective view which shows the example by which the LF transmission / immobilizer reception combined antenna was arrange | positioned at the center console. The flowchart which shows the engine starting control performed by a smart keyless control means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a ... Transponder 2 ... Portable machine 3 ... Smart keyless control means 8a, 8b, 8c, 8d ... Smart keyless LF transmitting antenna 8e ... LF transmission / immobilizer receiving antenna 31 ... Smart keyless control unit 32 ... Immobilizer control unit 33 ... Smart keyless LF driving circuit 34... LF driving / receiving circuit 35. RF receiving circuit R.

Claims (5)

This is a smart keyless device for a vehicle equipped with smart keyless control means for locking / unlocking the door of the vehicle when the identification code of the in-vehicle device mounted on the vehicle matches the identification code of the portable device carried by the passenger. And
A predetermined one of smart keyless authentication communication radio signal generating means and radio signal transmitting antenna for communicating with the portable device when determining whether or not the identification codes match is communicated with the transponder when the engine is started. As a wireless signal generating means for immobilizer authentication communication and a radio signal transmitting / receiving antenna for performing start control by performing
Immobilizer authentication communication receiving means for controlling reception of the radio signal from the transponder received by the shared radio signal transmitting / receiving antenna for immobilizer authentication communication to the smart keyless control means;
A smart keyless device for a vehicle, comprising start control means for performing start control of an engine based on a reception signal from the immobilizer authentication communication receiving means. The start control means includes: a first start control means for performing engine start control based on a reception signal from a smart keyless authentication communication receiving means for receiving and controlling a wireless signal from the portable device;
2. The smart keyless device for a vehicle according to claim 1, further comprising: a second start control unit that performs start control of the engine based on a reception signal from the immobilizer authentication communication receiving unit that controls reception of the radio signal from the transponder. . The portable device includes the transponder, and
The vehicle smart according to claim 1 or 2, wherein the shared wireless signal transmitting / receiving antenna for immobilizer authentication communication is set at a position where a driver can access the portable device around a driver's seat in a vehicle interior. Keyless device. The smart keyless device for a vehicle according to claim 3, wherein the shared wireless signal transmitting / receiving antenna for immobilizer authentication communication is set at a position in the center of the vehicle width direction on the front side of the passenger compartment. The frequency band of the radio signal transmitted to the portable device during the smart keyless authentication communication and the frequency band of the radio signal transmitted to the transponder during the immobilizer authentication communication are set to be the same. A smart keyless device for a vehicle as described in 1.

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