JP2006341768A - Smart entry system for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a smart keyless entry system for a vehicle capable of suppressing the risk of the vehicle being brought away by an undue person who gets on the vehicle at the moment when a door is unlocked, and starts an engine using a portable transmitter/receiver left by a vehicle user in a cabin undeliberately. <P>SOLUTION: In the case that a transmitter ID signal is returned in response to a request signal of an in cabin transmitting antenna when the door is unlocked, and the authentication of the ID code not invalidated is obtained, on the assumption that a driver possessing a transmitter with the ID code not invalidated exists in the cabin, the invalidation of the ID code of the transmitter that is invalidated and left in the cabin is released. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a smart entry system for a vehicle.

  Conventionally, an ID signal from a portable device is received by an in-vehicle device, and if authentication of an ID code included in the ID signal is obtained, unlocking of a vehicle door or starting of an engine is permitted. Entry systems are known.

  Specifically, as disclosed in, for example, Patent Document 1, the smart entry system is configured such that when a request signal is transmitted from the in-vehicle device to the outside of the vehicle during the door unlock operation from the outside of the vehicle, An ID signal including an ID code is transmitted from the machine, and ID authentication is performed by the smart keyless control unit of the in-vehicle machine that has received the ID signal. If the ID authentication is established, that is, if the ID code in the ID signal matches the ID code registered in the smart keyless control unit, the smart keyless control unit sends a signal for allowing the door to be unlocked. The door is unlocked.

  The smart entryless system is configured such that when a request signal is transmitted from the in-vehicle device to the inside of the vehicle during the engine start operation of the occupant, the ID signal is transmitted from the portable device and the in-vehicle device that has received the ID signal. The smart keyless control unit authenticates the ID. If the authentication of the ID is established, the smart keyless control unit outputs a signal for permitting the engine to be started, and the engine is started according to the operation of the occupant.

  Furthermore, when the mobile entry device is forgotten to be placed in the passenger compartment when the door is locked, the smart entry system invalidates the ID code of the portable device that has been left in the passenger compartment or when the door is unlocked from outside the vehicle. In this case, if the authentication of the ID is established, the invalidation of the invalidated ID code of the portable device is canceled.

Specifically, in the smart entryless system, when the request signal is transmitted from the in-vehicle device to the inside of the vehicle when the door is locked, the ID signal is transmitted from the portable device to the in-vehicle device that has received the ID signal. ID authentication is performed by the smart keyless control unit. And if the above-mentioned ID authentication is established, it is alarmed that the portable device is left behind in the passenger compartment, and the ID code of the portable device left in the passenger compartment is invalidated. ing. After the invalidation, the engine start is not permitted even if the ID code of the portable device is obtained when the occupant starts the engine. Then, after the invalidation, the invalidation of the invalidated ID code of the portable device is canceled if the ID authentication is established when the door is unlocked from outside the vehicle. After the invalidation is canceled, the engine start is permitted if the ID code of the portable device is obtained when the occupant starts the engine.
JP 2003-148019 A

  However, if the vehicle thief gets into the vehicle at the moment the door is unlocked by the unlocking operation of the occupant or the vehicle thief from the outside of the vehicle, the invalidation of the ID code of the portable device that is misplaced in the passenger compartment Therefore, there is a possibility that the vehicle thief starts the engine using a portable device that has been left behind in the passenger compartment and carries the vehicle away.

  The present invention has been made in view of such a point, and an object of the present invention is to receive an ID signal from a portable transceiver by an in-vehicle receiver and authenticate an ID code included in the ID signal. If it is obtained, in the smart keyless entry system for vehicles that unlocks the door of the vehicle and starts the engine, the person other than the user of the vehicle gets into the vehicle at the moment when the door is unlocked, An object of the present invention is to provide a technique for suppressing starting and escaping of an engine by starting an engine using a portable transceiver that has been left in the vehicle.

  The first invention includes an in-vehicle transmitter that wirelessly transmits a request signal, a portable transceiver that wirelessly transmits an ID signal when the request signal is received, an in-vehicle receiver that receives the ID signal, When the unlock operation of the door from the outside of the vehicle is detected, the on-board transmitter transmits the request signal to the outside of the vehicle, and the ID signal from the portable transceiver is received by the on-vehicle receiver in response to the request signal. When receiving and authenticating the ID, door control means for unlocking the door, and when operating the engine start switch in the vehicle, the vehicle-mounted transmitter transmits the request signal into the vehicle, In response to the request signal, the engine is started when the ID signal from the portable transceiver is received by the in-vehicle receiver and the ID is authenticated. When the door is locked, the vehicle-mounted transmitter transmits the request signal to the inside of the vehicle, and receives the ID signal from the first portable transceiver in response to the request signal by the vehicle-mounted receiver. And an invalidation control means for invalidating the authentication of the ID of the first portable transceiver when the engine authentication switch is subsequently operated when the ID authentication is established. In the system, the invalidation control means causes the request signal to be transmitted into the vehicle after unlocking the door, and a second portable device other than the first portable transceiver is used in response to the request signal. When the ID signal from the transmitter / receiver is received and authentication of the ID is established, the invalidation is canceled.

  Note that “after the door is unlocked” includes “when the door is opened after the door is unlocked or thereafter”. Also, “invalidate the ID of the portable transceiver when operating the engine start switch” means, for example, that the engine is not started even if the ID authentication is established, or the ID is invalidated. Or invalidating the portable transceiver or not collating the ID, thereby invalidating the authentication of the portable transceiver when the engine start switch is operated.

  According to the present invention, when the door is locked, the invalidation control means causes the in-vehicle transmitter to transmit a request signal into the vehicle, and the ID signal from the first portable transceiver is mounted on the vehicle in response to the request signal. When it is received by the receiver and authentication of the ID is established, it is assumed that the first portable transceiver has been left in the vehicle, and the ID of the first portable transceiver at the time of the operation of the engine start switch thereafter. Disable authentication. Then, after the door is unlocked with respect to the request signal transmitted to the interior of the vehicle when the door is locked, the invalidation control means transmits the request signal to the interior of the vehicle, and the first portable signal is transmitted to the request signal. When an ID signal is received from a second portable transceiver other than the portable transceiver and authentication of the ID is established, the user possesses the second portable transceiver, and thus the second portable transceiver. The invalidation regarding the first portable transceiver is canceled assuming that an occupant is present in the vehicle. In this way, when a passenger who has a portable transceiver other than the portable transceiver that is misplaced in the vehicle exists in the vehicle, the unlocking of the door is canceled to cancel the invalidation regarding the portable transceiver that is misplaced in the vehicle. Suppresses the person who is not a user of the vehicle (for example, a vehicle thief) gets into the vehicle at the moment when the vehicle is turned on, starts the engine using a portable transceiver that is misplaced in the vehicle, and carries the vehicle away it can. Therefore, the security of the smart entry system for vehicles can be improved.

  According to a second invention, in the first invention, the invalidation control means receives an ID signal from the second portable transceiver in response to a request signal transmitted into the vehicle after the door is unlocked. When the ID is received and the authentication of the ID is established, the invalidation is canceled and the passenger is notified of the fact.

  Thus, when the ID signal from the second portable transceiver is received for the request signal transmitted into the vehicle after unlocking the door and the authentication of the ID is established, the invalidation control means While canceling the invalidation of the portable transmitter / receiver 1, the passenger is informed of that. In this way, the occupant can know that the invalidation related to the portable transceiver that was left in the car has been released, so the occupant once unlocks the door and gets into the vehicle, and then, for example, a little With the errand, without having to lock the door again, the portable transceiver that was previously left in the car is left in the car again (in this case, the door is not locked, so it is not disabled as described above) It is possible to suppress going out of the vehicle. Therefore, it is possible to prevent a person other than the user of the vehicle (for example, a vehicle thief) from getting into the vehicle, starting the engine using a portable transceiver that has been left behind in the vehicle, and carrying away the vehicle. Therefore, the security of the smart entry system for the vehicle can be further improved.

  In a third aspect based on the second aspect, the invalidation control means periodically transmits the request signal into the vehicle after the door is unlocked and before the engine is started. On the other hand, when the ID signal from the second portable transceiver is received and the authentication of the ID is established, the invalidation is canceled and the passenger is notified of the fact. It is characterized by this.

  Thus, after the door is unlocked and before the engine is started, the invalidation control means causes the request signal to be periodically transmitted into the vehicle, and the request signal is sent from the second portable transceiver. When the ID signal is received and the authentication of the ID is established, the invalidation related to the first portable transceiver is canceled and the passenger is notified of the fact. That is, there is little noise and relatively free time for the occupant rather than after starting the engine when the noise (for example, engine sound) is relatively loud and the occupant (especially the driver) is relatively busy. Before starting the engine, the occupant can know that the invalidation related to the portable transceiver that has been left in the vehicle is released. Therefore, the occupant can surely know the release and can deal with the release with a margin. Therefore, the convenience of the smart entry system for this vehicle can be improved.

  In a fourth aspect based on the first aspect, the invalidation control means receives an ID signal from the second portable transceiver in response to a request signal transmitted into the vehicle after the door is unlocked. If the first portable transceiver is not present in the vehicle even if the ID is received and the ID is authenticated, at least the invalidation regarding the first portable transceiver not present in the vehicle is canceled. It is characterized by not being configured.

  As a result, even if the ID signal from the second portable transceiver is received for the request signal transmitted into the vehicle after the door is unlocked and the ID authentication is established, When the portable transceiver is not present in the vehicle (for example, when a person other than the user of the vehicle (for example, a vehicle thief) is taking out the portable transceiver that was misplaced in the vehicle), the invalidation control means , At least the invalidation relating to the first portable transceiver that does not exist in the vehicle is not canceled. In this way, even when a passenger who has a portable transceiver other than the portable transceiver that is misplaced in the vehicle is present in the car, the portable transceiver that is misplaced in the car is being taken out of the car. Because at least the invalidation related to the portable transceiver is not canceled, a person other than the user of the vehicle once takes the portable transceiver that was left in the vehicle out of the vehicle and then (specifically, the portable After the invalidation regarding the transmitter / receiver is cancelled), it is possible to prevent the user from getting into the vehicle using the portable transmitter / receiver that has been taken out and taking the vehicle away. Therefore, the security of the smart entry system for the vehicle can be further improved.

  According to the present invention, when the door is locked, the in-vehicle transmitter transmits a request signal into the vehicle, and the ID signal from the first portable transceiver is received by the in-vehicle receiver in response to the request signal; When the authentication of the ID is established, the authentication of the ID of the first portable transceiver is invalidated when the engine start switch is subsequently operated, assuming that the first portable transceiver is left behind in the vehicle. Then, after unlocking the door, the request signal is transmitted into the vehicle, and the ID signal from the second portable transceiver other than the first portable transceiver is received in response to the request signal and When the ID authentication is established, the second portable transmitter / receiver, and hence the passenger who has the second portable transmitter / receiver is present in the vehicle, and the invalidation related to the first portable transmitter / receiver is canceled. . In this way, when a passenger who has a portable transceiver other than the portable transceiver that is misplaced in the vehicle exists in the vehicle, the unlocking of the door is canceled to cancel the invalidation regarding the portable transceiver that is misplaced in the vehicle. Suppresses the person who is not a user of the vehicle (for example, a vehicle thief) gets into the vehicle at the moment when the vehicle is turned on, starts the engine using a portable transceiver that is misplaced in the vehicle, and carries the vehicle away it can. Therefore, the security of the smart entry system for vehicles can be improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows the overall configuration of a vehicle smart keyless system according to an embodiment of the present invention. This system is composed of a plurality of transmitters 2,... (Only one is shown in FIG. 1 for convenience) carried by a passenger and an in-vehicle device 3 mounted on the vehicle 1. FIG. 2 is a schematic diagram of the vehicle 1 equipped with the in-vehicle device 3. In FIG. 2, reference numeral 1 denotes a vehicle on which the vehicle-mounted device 3 is mounted, and a driver's seat side door 11 a is provided on the right side of the vehicle, while a passenger seat side door 11 b is provided on the left side of the vehicle. A meter unit 12a is provided on the driver seat side upper portion of the instrument panel 12. In addition, the vehicle interior of this embodiment includes the inside of a trunk.

  Each transmitter 2 has a transmitter control unit 22 composed of a CPU. The transmitter control unit 22 includes a receiving antenna 23 that receives the request signal r from the vehicle-mounted device 3, a transmitter ID signal i that includes the ID code of the transmitter 2, and a transponder ID signal that includes the ID code of the transponder 29 a of the mechanical key 29. j, a transmission antenna 24 for wirelessly transmitting a lock signal L for door lock and an unlock signal U for door unlock, a transponder reader 25 for reading the ID code of the transponder 29a, and a switch for locking the door. A lock switch 26, an unlock switch 27 that is a switch for releasing the door lock, and a buzzer 28 that sounds an alarm to an occupant carrying the transmitter 2 are connected to be able to send and receive signals. When the receiving antenna 23 receives the request signal r from the in-vehicle device 3, the transmitter control unit 22 receives the received signal and is read by the transmitter ID signal i including the ID code of the transmitter 2 and the transponder reader 25. The transponder ID signal j including the ID code of the transponder 29a is transmitted from the transmission antenna 24. When the lock switch 26 or the unlock switch 27 is pressed, the transmitter control unit 22 transmits the lock signal L or the unlock signal U and the transmitter ID signal i from the transmission antenna 24.

  Further, the transmitter 2 includes a mechanical as an emergency key for performing door lock, door unlock, and engine start when the battery (not shown) of the transmitter 2 runs out or when the smart keyless system for the vehicle does not operate. A key 29 is detachably stored. The mechanical key 29 incorporates a transponder 29a in which an internal antenna (not shown) and an IC (not shown) for storing an ID code are stored.

  The in-vehicle device 3 is provided with a smart keyless control unit 4 having a CPU as control means. In this smart keyless control unit 4, a meter unit 12a provided at the upper part of the instrument panel 12 positioned in front of the driver's seat in the vehicle and a vehicle 1 provided under the meter unit 12a are operated. In order to operate an ignition starter 13 as an engine start switch to be brought into a state, a vehicle speed detection sensor 14 for detecting the vehicle speed of the vehicle 1, and various devices (for example, a power window, audio, etc.) provided in the passenger compartment. , The key slot 16 as a transponder reader provided in front of the driver's seat in the passenger compartment and into which the mechanical key 29 is inserted, and the door knobs of the driver's side and passenger's side doors 11a and 11b. Provided door request switches 50, 50 and doors 11a, 11b Door key cylinders 51 and 51 provided in the respective door knobs and mechanical keys 29 are inserted therein, and door lock actuators 52 provided in the respective doors 11a and 11b to switch the doors 11a and 11b to a locked state or an unlocked state, 52, door open detection sensors 53 and 53 for detecting that the doors 11a and 11b are in an open state, and a door lock detection sensor 54 for detecting that the doors 11a and 11b of the vehicle are locked or unlocked. , 54, an engine speed sensor 55 for detecting the engine speed, outdoor and indoor transmission antennas 61 and 62 as in-vehicle transmitters for wirelessly transmitting a request signal r to the transmitter 2, and an instrument The in-vehicle receiving antenna 6 as the in-vehicle receiver provided on the upper side of the panel 12 A memory 70 for storing the ID code of the transmitter 2, the ID code of the transponder 29a, and whether they are valid, invalid, a buzzer 7 that sounds an alarm outside the vehicle, and an ECU (engine control unit) ) 8 and 8 are connected so as to be able to exchange signals.

  The meter unit 12a is notified that an alarm lamp (not shown) for warning an occupant in the passenger compartment, an in-vehicle alarm buzzer (not shown), and a key knob (not shown) of the ignition starter 13 are unlocked. A kenoblock release display unit (not shown) and a transponder ID registration display unit (not shown) that prompts the user to register the ID code of the transponder 29a not registered in the memory 70 are provided.

  The ignition starter 13 is operated by rotating the key knob to switch the four operations of accessory OFF, accessory ON, ignition ON, and ignition START to the smart keyless control unit 4 in accordance with the corresponding operation signals. Supply.

  The indoor switch 15 supplies an operation signal to the smart keyless control unit 4 when operated.

  The key slot 16 is provided with a coil antenna (not shown) at the top thereof. The coil antenna receives the transponder ID signal j from the transponder 29 of the mechanical key 29 inserted in the key slot 16 and supplies the transponder ID signal j to the smart keyless control unit 4. In this way, the key slot 16 reads the ID code of the transponder 29a of the mechanical key 29 inserted therein, and supplies the read ID code to the smart keyless control unit 4.

  The door request switch 50 is provided on the door knobs of the driver side and passenger side doors 11a and 11b of the vehicle so that it can be pressed from outside the passenger compartment, and displays the intention when the door is unlocked or locked. It is intended for use. The door request switch 50 supplies an ON signal to the smart keyless control unit 4 when a pressing operation is performed. Then, the smart keyless control unit 4 detects that the door unlocking or door locking operation has been performed from the outside of the vehicle by the ON signal.

  The door lock actuator 52 receives the door lock signal or the door unlock signal from the smart keyless control unit 4, and locks or unlocks the driver side door 11a and / or the passenger side door 11b.

  The door opening detection sensor 53 is a sensor for identifying whether the driver's seat side and passenger's seat side doors 11a and 11b are open or closed, and is provided in each of the doors 11a and 11b. When the door 11a (or 11b) is in the open state, a door open signal is supplied to the smart keyless control unit 4.

  The outdoor transmission antenna 61 includes a driver-seat-side transmission antenna 61a, a passenger-seat-side transmission antenna 61b, and a rear-end-panel transmission antenna 61c, which are provided at three locations of the driver-seat side and the passenger-seat side doors 11a and 11b and the rear-end panel 11c, respectively. Consists of. The indoor transmission antenna 62 includes a front transmission antenna 62a and a rear transmission antenna 62b provided at two locations on the vehicle front side of the instrument panel 12 located in front of the passenger seat and on the vehicle rear side of the seat.

  The transmission antennas 61a to 61c, 62a, and 62b transmit the request signal r in a substantially spherical range around the transmission antennas 61a to 61c, 62a, and 62b, respectively, and the ranges overlap with each other. It is configured. The request signal r is transmitted in order from the transmission antennas 61a to 61c, 62a, and 62b.

  The in-vehicle receiving antenna 63 receives a transmitter ID signal i, a transponder ID signal j, a lock signal L, and an unlock signal U from the transmitter 2, and transmits these transmitter ID signal i, transponder ID signal j, lock signal L and An unlock signal U is supplied to the smart keyless control unit 4.

  And by arrange | positioning the transmission antennas 61a-61c, 62a, 62b as mentioned above, it can grasp | ascertain now where the transmitter 2 is located inside and outside the vehicle interior. That is, among the request signals r and r of the outdoor and indoor transmission antennas 61 and 62, the transmitter ID signal i returned by the transmitter 2 is received by the in-vehicle reception antenna 63 only for the request signal r of the outdoor transmission antenna 61. The transmitter 2 can be determined to be present outside the vehicle near the driver's seat side door 11a, outside the passenger seat side door 11b, or outside the vehicle near the rear end panel 11c. Only when the transmitter ID signal i returned by the transmitter 2 is received by the in-vehicle receiving antenna 63, it can be determined that the transmitter 2 is present in the vehicle interior.

  In the memory 70, the ID code of each transmitter 2 is registered in advance, and the ID code of the transponder 29a of each transmitter 2 is registered in association with the ID code of each transmitter 2. ing. Furthermore, the memory 70 registers whether the ID code of each transmitter 2 and the ID code of the transponder 29a of each transmitter 2 are valid or invalid.

  Hereinafter, the signal processing operation performed by the smart keyless control unit 4 of the in-vehicle device 3 will be described.

  First, door lock control by the vehicle smart keyless system will be described. The door lock control is a control for unlocking / locking the door 11a (or 11b) without inserting and operating the mechanical key 29 built in the transmitter 2 into the door key cylinder 51 of the door 11a (or 11b). It is.

  When the occupant carrying the transmitter 2 presses the door request switch 50 when the engine of the vehicle 1 is stopped, request signals r and r are transmitted from the outdoor and indoor transmission antennas 61 and 62, respectively. The transmitter 2 that has received the request signals r and r from both the transmitting antennas 61 and 62 returns the transmitter ID signal i, and the transmitter ID signal i is received by the in-vehicle receiving antenna 63. Check the ID code. Here, when the transmitter ID signal i is returned only for the request signal r of the outdoor transmission antenna 61 and the ID code authentication is obtained, the occupant carrying the transmitter 2 is on the driver's seat side or on the passenger seat side. Assuming that the doors 11a and 11b are in the vicinity, the doors 11a and 11b are controlled to be unlocked / locked according to the locked / unlocked state of the doors 11a and 11b. The locked / unlocked states of the doors 11a and 11b are detected by the door lock detection sensors 54 described above. The unlock / lock control of the doors 11a and 11b is performed by the smart keyless control unit 4 supplying a door unlock signal / door lock signal to each door lock actuator 52. Details of this will be described later.

  The door lock or the door lock release is not only a method using the vehicle smart keyless system as described above, but also the door lock or the door lock release is performed by inserting the mechanical key 29 into the door key cylinder 51 and turning it. The door lock actuator 52 may be remotely operated by pressing the lock switch 26 or unlock switch 27 of the transmitter 2 to perform door lock or door lock release. Specifically, for example, when the lock switch 25 is pressed, the lock signal L and the transmitter ID signal i of the transmitter 2 are transmitted from the transmission antenna 22 of the transmitter 2, and the smart keyless of the in-vehicle device 4 that has received them. When the control unit 40 collates the ID code of the transmitter 2 and authentication is obtained, the control unit 40 supplies the door lock signal to the door lock actuator 52 to lock the door.

  Subsequently, invalidation control by the smart keyless system for a vehicle will be described. The invalidation control is control for invalidating the ID code or the like of the transmitter 2 that has been left in the passenger compartment when the transmitter 2 is left in the passenger compartment when the doors 11a and 11b are locked.

  When the doors 11a and 11b are locked, the request signal r is transmitted from the indoor transmitting antenna 62. Upon receiving the request signal r from the transmission antenna 62, the transmitter 2 returns a transmitter ID signal i, the transmitter ID signal i is received by the in-vehicle reception antenna 63, and the ID code in the transmitter ID signal i is verified. Do. Here, as shown in FIG. 3A, the transmitter ID signal i of the transmitter 2 (first portable transceiver) is returned to the request signal r of the indoor transmitting antenna 62, and the ID code is authenticated. If it is obtained, it is assumed that the transmitter 2 is misplaced in the vehicle interior, and an alarm lamp, an in-car alarm buzzer and an external buzzer 7 give an alarm and are registered in the memory 70 and misplaced in the vehicle interior. The ID code of the transmitter 2 and the ID code of the transponder 29a corresponding thereto are invalidated. In addition, the arrow of the broken line in a figure represents the flow of the signal from the transmitter 2 to the vehicle equipment 3 (hereinafter the same). After the invalidation, when the ignition starter 13 is rotated to the ignition START, the engine start control is not performed even if the ID code authentication of the transmitter 2 is obtained. On the other hand, even when the transmitter ID signal i is returned to the request signal r of the indoor transmission antenna 62 and the ID code is authenticated, that is, when the transmitter 2 is left in the passenger compartment, As shown in FIG. 3B, when the lock switch 26 of the transmitter 2 in the vehicle interior or the transmitter 2 outside the vehicle interior is pressed or when the indoor switch 15 is operated, it is registered in the memory 70. The ID code of the transmitter 2 in the vehicle interior (for example, the transmitter 2 possessed by the passenger remaining in the vehicle interior) and the ID code of the transponder 29a corresponding thereto are not invalidated. Details of this will be described later.

  Next, the invalidation cancellation control by the smart keyless system for a vehicle will be described. The invalidation cancellation control is control for canceling the invalidation of the ID code or the like of the transmitter 2 invalidated when the doors 11a and 11b are unlocked.

  After the invalidation, the request signal r is transmitted from the indoor transmitting antenna 62 when the doors 11a and 11b are unlocked. Upon receiving the request signal r from the transmission antenna 62, the transmitter 2 returns a transmitter ID signal i, the transmitter ID signal i is received by the in-vehicle reception antenna 63, and the ID code in the transmitter ID signal i is verified. Do. Here, as shown in FIG. 3C, the transmitter ID signal i of the transmitter 2 (second portable transceiver) is returned to the request signal r of the indoor transmitting antenna 62, and the ID code is authenticated. If it is obtained and the ID code is not invalidated, it is assumed that the occupant possessing the transmitter 2 and thus the passenger is present in the vehicle interior, and is left invalid in the vehicle interior. The invalidation of the ID code of the transmitter 2 and the corresponding ID code of the transponder 29a is canceled. Details of this will be described later.

  Next, engine start control will be described. The engine start control is a control for starting the engine by operating the ignition starter 13 to the ignition START. Details of this will be described later.

  The engine start is not limited to the method using the vehicle smart keyless system as described above, but may be started by inserting the mechanical key 29 into the key slot 16 and rotating it to the ignition START. good. Specifically, when the mechanical key 29 is operated to the ignition START, the transponder signal j is transmitted from the transponder 29a of the mechanical key 29, and received through the key slot 16, the smart keyless control unit of the in-vehicle device 4 40 determines whether or not the ID code of the transponder 29a included in the signal j is registered in the memory 44, and if it is registered, the ID code of the transponder 29a is verified to obtain authentication. If so, start the engine. On the other hand, when the mechanical key 29 is operated to the ignition START after the invalidation, the engine is not started even if the authentication of the ID code of the transponder 29a is obtained. Details of this will be described later.

<Smart keyless control>
Hereinafter, the smart keyless control by the smart keyless control unit 4 and the transmitter control unit 22 will be described with reference to the flowchart of FIG. In the following description, first, smart keyless control by the smart keyless control unit 4 will be described with reference to the flowchart on the left side of FIG. 4, and then the transmitter control unit 22 will be described with reference to the flowchart on the right side of FIG. The smart keyless control by means of will be described. Moreover, the broken line in a figure represents the flow of the signal between the vehicle equipment 3 and the transmitter 2 (hereinafter the same).

(1) Smart keyless control by smart keyless control unit In step SA1, door lock control is performed. In step SA2, engine start control is performed. In step SA3, it is determined whether or not a predetermined timing has come. Specifically, it is determined whether or not immediately after the ignition starter 13 is in the accessory OFF state, immediately after the ignition starter 13 is in the ignition ON state, or immediately after the doors 11a and 11b are in the open state. If the determination result in step SA3 is YES, the process proceeds to step SA4, and if NO, the process proceeds to return.

  In step SA4, the request signals r are sequentially transmitted toward the vehicle interior by the indoor transmitting antennas 62a and 62b. In step SA5, it is determined whether or not the in-vehicle receiving antenna 63 has received the transmitter ID signal i from the transmitter 2 within a predetermined time after the transmission of the request signal r. If the determination result in step SA5 is YES, the process proceeds to step SA6, and if NO, the process proceeds to return.

  In step SA6, the ID code in the received transmitter ID signal i is verified. In step SA 7, it is determined whether only the ID code of one transmitter 2 matches the ID code of the transmitter 2 registered in the memory 70. If the determination result in step SA7 is YES (that is, if it is authenticated that only one ID code matches), it is determined that there is only one transmitter 2 in the passenger compartment, and the process proceeds to step SA8, where NO is determined. In the case (that is, when authentication is not obtained (for example, the occupant has a transmitter that can receive a request signal from the vehicle-mounted device and send back an ID signal). In the case where it corresponds to a vehicle) or when it is authenticated that two or more ID codes match (that is, when two or more transmitters 2 exist in the vehicle interior), the meter unit 12a Proceed to the return without presenting the registration guidance described later.

  In step SA8, it is determined whether or not the ID code of the transmitter 2 that has been authenticated to match is invalidated. If the determination result in step SA8 is YES (that is, if it is an invalid ID code), the process proceeds to return, and if it is NO (that is, if it is a valid ID code), the process proceeds to step SA9. In step SA9, it is determined whether or not the ID code of the transponder 29a corresponding to the ID code of the transmitter 2 that has been authenticated to match is not registered in the memory 70. If the determination result in step SA9 is YES (that is, if it is not registered), the process proceeds to step SA10, and if it is NO (that is, if it is registered), the process proceeds to return. In step SA10, a registration guidance that “Please insert the mechanical key of the current transmitter into the key slot” is presented to the meter unit 12a. This registration guidance may be performed by voice. In step SA11, the ID code of the transponder 29a read within a predetermined time after the presentation is stored in the memory 70 in association with the ID code of the transmitter 2 corresponding thereto.

(2) Smart keyless control by the transmitter control unit In step SA1 ′, door lock control is performed. In step SA2 ′, engine start control is performed. In step SA3 ′, it is determined whether or not the request signal r from the in-vehicle device 3 has been received by the receiving antenna 23. Here, when the transmitter 2 possessed by the occupant is within the reach (electric field range) of the request signal r from the indoor transmission antennas 62a and 62b, the transmitter 2 receives the request signal r at the reception antenna 23 (the same applies hereinafter). ). If the determination result in step SA3 ′ is YES, the process proceeds to step SA4 ′, and if NO, the process proceeds to return. In step SA4 ′, the transmission antenna 24 is caused to transmit the transmitter ID signal i to the in-vehicle device 3.

<Door lock control>
Hereinafter, the door lock control by the smart keyless control unit 4 and the transmitter control unit 22 will be described with reference to the flowchart of FIG. In the following description, first, door lock control by the smart keyless control unit 4 will be described with reference to the flowchart on the left side of FIG. 5, and then the transmitter control unit 22 will be described with reference to the flowchart on the right side of FIG. The door lock control by will be described.

(1) Door lock control by smart keyless control unit In step SB1, it is determined based on the output signal of the engine speed detection sensor 55 whether or not the engine is rotating. In step SB1, it may be determined whether or not the ignition starter 13 is in the accessory ON state or the ignition ON state. If the determination result in step SB1 is YES, the process proceeds to step SB7, and if NO, the process proceeds to step SB2. In step SB2, it is determined whether or not the door request switch 50 has been pressed. If the determination result in step SB2 is YES, the process proceeds to step SB3, and if NO, the process proceeds to SB7. In step SB3, the request signal r is sequentially transmitted from the outdoor and indoor transmission antennas 61a to 61c, 62a, and 62b toward the outside of the vehicle interior.

  In step SB4, it is determined whether or not the in-vehicle receiving antenna 63 has received the transmitter ID signal i from the transmitter 2 within a predetermined time after the transmission of the request signal r. If the determination result in step SB4 is YES, the process proceeds to step SB5, and if NO, the process proceeds to step SB7. In step SB5, the ID code in the received transmitter ID signal i is verified. In step SB6, it is determined whether or not the ID code in the transmitter ID signal i for the request signal r for outside the vehicle matches the ID code of the transmitter 2 registered in the memory 70. When the determination result of step SB6 is YES (that is, when authentication that the ID codes match is obtained), the transmitter 2 exists outside the vehicle near the driver's seat side door 11a or outside the passenger seat door 11b. Then, the process proceeds to step SB8, and in the case of NO (that is, when the transmitter ID signal i for the request signal r for the outside of the passenger compartment is not received or the authentication is not obtained), the process proceeds to step SB7.

  In step SB7, the lock signal L or unlock signal U and the transmitter ID signal i from the transmitter 2 are received by the in-vehicle receiving antenna 63, and the ID code in the transmitter ID signal i is registered in the memory 70. It is determined whether or not the ID code of the transmitter 2 matches. If the determination result in step SB7 is YES (that is, if the lock signal L or the unlock signal U and the transmitter ID signal i are received and the authentication that the ID code matches is obtained), the process proceeds to step SB8. In the case of NO (that is, when the lock signal L or the unlock signal U and the transmitter ID signal i are not received or authentication is not obtained), the process proceeds to step SB14. In step SB8, it is determined whether or not the ID code of the transmitter 2 that has been authenticated to match is invalidated. If the determination result in step SB8 is YES (that is, in the case of an invalid ID code), the process proceeds to step SB14, and if NO (that is, in the case of a valid ID code), the process proceeds to step SB9.

  In step SB9, based on the output signal of the door lock detection sensor 54, it is determined whether the doors 11a and 11b are locked or unlocked. If the determination result of step SB9 is unlocked, the process proceeds to step SB10, and if it is locked, the process proceeds to step SB13. In step SB10, door lock control is performed. In step SB11, it is determined whether or not the ID code in the transmitter ID signal i for the request signal r for the passenger compartment matches the ID code of the transmitter 2 registered in the memory 70. If the determination result in step SB11 is YES (that is, if it is authenticated that the ID codes match), it is determined that the transmitter 2 has been left in the passenger compartment, and the process proceeds to step SB12, and if NO (that is, If the transmitter ID signal i for the request signal r for the passenger compartment is not received or the authentication is not obtained), the process proceeds to step SB14.

  In step SB12, invalidation control is performed. Thereafter, the process proceeds to step SB14.

  In step SB13, door unlock control is performed. Thereafter, the process proceeds to step SB14.

  In step SB14, it is determined whether there is an invalid ID code of the transmitter 2 or not. If the determination result in step SB14 is YES, the process proceeds to step SB15, and if NO, the process proceeds to the end. In step SB15, invalidation release control is performed. Then go to the end.

(2) Door lock control by transmitter control unit In step SB1 ′, it is determined whether or not the request signal r from the in-vehicle device 3 has been received by the receiving antenna 23. If the determination result in step SB1 ′ is YES, the process proceeds to step SB2 ′, and if NO, the process proceeds to step SB3 ′. In step SB2 ′, the transmission antenna 24 is caused to transmit the transmitter ID signal i and the transponder ID signal j to the in-vehicle device 3. In step SB3 ′, it is determined whether or not the lock switch 26 or the unlock switch 27 has been pressed. If the determination result in step SB3 ′ is YES, the process proceeds to step SB4 ′, and if NO, the process proceeds to step SB5 ′. In step SB4 ′, the transmitting antenna 24 is caused to transmit the lock signal L or the unlock signal U and the transmitter ID signal i to the in-vehicle device 3. In step SB5 ', invalidation control is performed. In step SB6 ′, invalidation release control is performed. Then go to the end.

<Disabling control>
Hereinafter, the invalidation control by the smart keyless control unit 4 and the transmitter control unit 22 will be described with reference to the flowchart of FIG. In the following description, the invalidation control by the smart keyless control unit 4 will be described first with reference to the flowchart on the left side of FIG. 6, and then the transmitter control unit 22 with reference to the flowchart on the right side of FIG. The invalidation control by means of will be described.

(1) Invalidation control by smart keyless control unit In SC1, it is assumed that the ID code in the transmitter ID signal i matches the request signal r for the vehicle interior, so that it is left behind in the vehicle interior. The ID code of the transponder 29a corresponding to the determined ID code of the transmitter 2 (see step SB11 in FIG. 5) is stored in the memory 70 in association with the ID code of the transmitter 2. This step SC1 is performed only when the ID code of the transponder 29a corresponding to the ID code of the transmitter 2 that has been left in the passenger compartment is not registered in the memory 70. In step SC2, a misplacement alarm is executed. This misplacement alarm is generated by sounding the outside buzzer 7, the in-car alarm buzzer of the meter unit 12a and the buzzer 28 of the transmitter 2 other than the transmitter 2 that has been misplaced in the vehicle interior, and lighting the alarm lamp of the meter unit 12a. A warning is given to the outside occupant and the occupant carrying the transmitter 2 that the transmitter 2 is misplaced in the vehicle. The misplacement alarm may be stopped after a predetermined time has elapsed after the alarm is started.

  In step SC3, within a predetermined time after the start of the misplacement alarm, the lock signal L and the transmitter ID signal i from the transmitter 2 inside or outside the vehicle are received by the in-vehicle receiving antenna 63, and the ID in the transmitter ID signal i is received. It is determined whether or not the code matches the ID code of the transmitter 2 registered in the memory 70. If the determination result in step SC3 is YES (that is, if the lock signal L and the transmitter ID signal i are received and authentication that the ID codes match is obtained), the process proceeds to step SC5. If the lock signal L and the transmitter ID signal i have not been received or the authentication has not been obtained), the process proceeds to step SC4. In step SC4, it is determined whether or not the indoor switch 15 has been operated within a predetermined time after the misplacement alarm is started. If the determination result in step SC4 is YES (that is, if operated), the process proceeds to step SC5, and if NO (that is, not operated), the process proceeds to step SC6.

  In step SC5, the misplacement alarm is forcibly stopped, and the ID code of the transmitter 2 in the passenger compartment and the ID code of the transponder 29a corresponding thereto are not invalidated. Then go to the end.

  In step SC6, the ID code of the transponder 29a corresponding to the ID code of the transmitter 2 that has been left behind in the passenger compartment is read. In step SC7, the ID code of the transmitter 2 left behind in the vehicle interior and the ID code of the transponder 29a corresponding thereto are invalidated. Then go to the end.

(2) Invalidation control by the transmitter control unit In SC1 ′, it is determined whether or not the lock switch 26 of the transmitter 2 inside or outside the vehicle has been pressed. If the determination result in step SC1 ′ is YES (that is, if operated), the process proceeds to step SC2 ′, and if NO (that is, not operated), the process proceeds to end. In step SC2 ′, the transmitting antenna 24 is caused to transmit the lock signal L and the transmitter ID signal i to the in-vehicle device 3. Then go to the end.

<Disabling cancellation control>
Hereinafter, the invalidation cancellation control by the smart keyless control unit 4 and the transmitter control unit 22 will be described with reference to the flowchart of FIG. In the following description, first, the invalidation release control by the smart keyless control unit 4 will be described with reference to the flowchart on the left side of FIG. 7, and then the transmitter control unit with reference to the flowchart on the right side of FIG. The invalidation cancellation control by 22 will be described.

(1) Invalidation cancellation control by smart keyless control unit In step SD1, pressing the door request switch 50, pressing the unlock switch 27 of the transmitter 2, or inserting the mechanical key 29 into the door key cylinder 51 By turning, it is determined whether or not the doors 11a and 11b are unlocked. In step SD1, it may be determined whether or not the doors 11a and 11b are opened, or the doors 11a and 11b are unlocked and the doors 11a and 11b are opened. It may be determined. If the determination result in step SD1 is YES, the process proceeds to step SD3, and if NO, the process proceeds to step SD2. In step SD2, it is determined whether or not it is within a predetermined time (for example, 2 seconds) after the doors 11a and 11b are closed. If the determination result in step SD2 is YES, the process proceeds to step SD3, and if NO, the process proceeds to step SD3.

  In step SD3, the request signals r are sequentially transmitted to the interior transmission antennas 62a and 62b toward the vehicle interior. This transmission is performed periodically until before engine start control. In step SD4, it is determined whether or not the in-vehicle receiving antenna 63 has received the transmitter ID signal i from the transmitter 2 within a predetermined time after the transmission of the request signal r. If the determination result in step SD4 is YES, the process proceeds to step SD5, and if NO, the process proceeds to the end. In step SD5, the ID code in the received transmitter ID signal i is verified. In step SD6, it is determined whether or not the ID code of the transmitter 2 matches the ID code of the transmitter 2 registered in the memory 70, and the ID code is not invalidated. When the determination result in step SD6 is YES (that is, when the ID code is authenticated and the ID code is valid), the transmitter 2 in which the ID code is not invalidated, and thus possessing this. Assuming that the occupant is present in the passenger compartment, the process proceeds to step SD7, and in the case of NO (that is, in the case where authentication is not obtained or invalidated ID code), the process proceeds to the end.

  In step SD7, among the ID codes of the transmitters 2 that have been verified (that is, the ID codes of the transmitters 2 existing in the passenger compartment), the ID codes of the disabled transmitters 2 and the corresponding invalidated codes are invalidated. The invalidation of the ID code of the transponder 29a is canceled. In step SD8, an invalidation cancellation alarm is executed. This invalidation cancellation alarm is generated by transmitting a disabled transmitter to the passengers inside and outside the vehicle by sounding the vehicle interior buzzer 7 and the vehicle unit alarm buzzer of the meter unit 12a and turning on the alarm lamp of the meter unit 12a. 2 that the invalidation of the ID code 2 and the corresponding ID code of the transponder 29a has been canceled. In step SD9, a notification signal a is transmitted to a notification signal transmission antenna (not shown).

(2) Invalidation cancellation control by the transmitter control unit In step SD1 ′, it is determined whether or not the request signal r from the in-vehicle device 3 has been received by the reception antenna 23. If the determination result in step SD1 ′ is YES, the process proceeds to step SD2 ′, and if NO, the process proceeds to step SD3 ′. In step SD2 ′, the transmission antenna 24 is caused to transmit the transmitter ID signal i and the transponder ID signal j to the in-vehicle device 3. In step SD3 ′, it is determined whether or not a notification signal from the in-vehicle device 3 is received by the receiving antenna 23. If the determination result in step SD3 ′ is YES, the process proceeds to step SD4 ′, and if NO, the process proceeds to the end. In step SD4 ′, an invalidation cancellation alarm is executed. This invalidation release alarm is generated by sounding the buzzer 28 of the transmitter 2 to notify the passenger who has the transmitter 2 of the ID code of the transmitter 2 and the ID code of the transponder 29a corresponding to the invalid ID code. Notify that the invalidation has been canceled. Then go to the end.

<Engine start control>
Hereinafter, engine start control by the smart keyless control unit 4 and the transmitter control unit 22 will be described with reference to the flowchart of FIG. In the following description, first, engine start control by the smart keyless control unit 4 will be described with reference to the flowchart on the left side of FIG. 8, and then the transmitter control unit 22 will be described with reference to the flowchart on the right side of FIG. The engine start control by the will be described.

(1) Engine start control by smart keyless control unit In step SE1, it is determined whether or not the ignition starter 13 has been rotated to the ignition START. If the determination result in step SE1 is YES, the process proceeds to step SE2, and if NO, the process proceeds to the end. In step SE2, the request signals r are sequentially transmitted to the interior transmission antennas 62a and 62b toward the vehicle interior. In step SE3, it is determined whether or not the in-vehicle receiving antenna 63 has received the transmitter ID signal i from the transmitter 2 within a predetermined time after the transmission of the request signal r. If the determination result of step SE3 is YES, the process proceeds to step SE4, and if NO, the process proceeds to SE6. In step SE4, the ID code in the received transmitter ID signal i is collated. In step SE5, it is determined whether or not the ID code in the transmitter ID signal i matches the ID code of the transmitter 2 registered in the memory 70. If the determination result in step SE5 is YES (that is, if authentication that the ID codes match is obtained), the process proceeds to step SE7, and if NO (that is, if authentication is not obtained), the process proceeds to step SE6. .

  In step SE6, it is determined whether or not the ID code in the transponder ID signal j from the transponder 29a of the mechanical key 29 inserted in the key slot 16 matches the ID code of the transponder 29a registered in the memory 70. . If the determination result in step SE6 is YES (that is, if authentication that the ID codes match is obtained), the process proceeds to step SE7, and if NO (that is, if authentication is not obtained), the process proceeds to the end. In step SE7, it is determined whether or not the ID code of the transmitter 2 or the ID code of the transponder 29a that has been authenticated to match is invalidated. If the determination result in step SE7 is YES (that is, an invalid ID code), the process proceeds to the end. If NO (that is, a valid ID code), the process proceeds to step SE8. In step SE8, an engine start permission signal is supplied to the ECU 8, and ignition starter control for rotating the cell motor to start the engine is performed. Then go to the end.

  In step SE1, the request signal r is not transmitted and the ID code of the transmitter 2 is verified only after the ignition starter 13 is operated to the ignition START. When the following conditions are satisfied, step SE2 is performed in advance. The ID code of the transmitter 2 may be verified by performing ~ SE5. Specifically, (i) the ignition starter 13 is rotated from accessory OFF to accessory ON, (ii) all doors 11a and 11b are closed, and at least one of them is open. (Iii) When any one of the conditions that at least one of the doors 11a and 11b is open and all the doors 11a and 11b are closed, the ignition starter 13 is operated to the ignition START. Therefore, when these conditions are satisfied, the ID code of the transmitter 2 is collated in advance. If the authentication of the ID code is obtained, the above steps SE2 to SE6 are omitted. As a result, when the ignition starter 13 is operated to the ignition START, it is possible to perform ignition starter control that immediately starts the engine without requiring time for ID code verification.

(2) Engine start control by transmitter control unit In step SE1 ′, it is determined whether or not the request signal r from the vehicle-mounted device 3 has been received by the receiving antenna 23. If the determination result of step SE1 ′ is YES, the process proceeds to step SE2 ′, and if NO, the process proceeds to the end. In step SE <b> 2 ′, the transmitter antenna 24 transmits the transmitter ID signal i and the transponder ID signal j to the in-vehicle device 3. Then go to the end.

-Effect-
As described above, according to the present embodiment, when the doors 11a and 11b are locked, the smart keyless control unit 4 causes the indoor transmission antenna 62 to transmit the request signal r into the vehicle, and the transmitter 2 transmits the request signal r to the request signal r. When the ID signal i from the vehicle is received by the in-vehicle receiving antenna 63 and the authentication of the ID is established, it is assumed that the transmitter 2 is left in the vehicle, and the ID of the transmitter 2 during the subsequent operation of the ignition starter 13 is authenticated. Disable. After unlocking the doors 11a and 11b, the smart keyless control unit 4 causes the request signal r to be transmitted into the vehicle, and the IDs from the transmitters 2 other than the transmitter 2 that have been left in the vehicle in response to the request signal r. When the signal i is received and authentication of the ID is established, the invalidation of the transmitter 2 that has been misplaced in the vehicle is canceled assuming that the transmitter 2 and, consequently, the occupant carrying the transmitter 2 exists in the vehicle. In this way, when there is an occupant with a transmitter 2 other than the transmitter 2 misplaced in the vehicle, the doors 11a and 11b are unlocked to cancel the invalidation of the transmitter 2 misplaced in the vehicle. It is possible to prevent a person other than the user of the vehicle (for example, a vehicle thief) from getting into the vehicle 1 and starting the engine using the transmitter 2 left behind in the vehicle and holding the vehicle 1 away. Therefore, the security of the smart entry system for vehicles can be improved.

  When the request signal r transmitted to the vehicle interior after unlocking the doors 11a and 11b is received with the ID signal i from the transmitter 2 other than the transmitter 2 left in the vehicle and the authentication of the ID is established, The smart keyless control unit 4 cancels the invalidation related to the transmitter 2 that is misplaced in the vehicle, and notifies the passenger to that effect. In this way, since the occupant can know that the invalidation related to the transmitter 2 left behind in the vehicle is released, the occupant once unlocks the doors 11a and 11b and gets into the vehicle 1, and then For example, for a little errand, the transmitter 2 that was previously left in the car is left in the car again without locking the doors 11a and 11b again (in this case, the doors 11a and 11b are not locked, as described above. Can be prevented from going out of the vehicle. Therefore, it is possible to prevent a person other than the user of the vehicle 1 (for example, a vehicle thief) from getting into the vehicle 1 and starting the engine using the transmitter 2 that is misplaced in the vehicle and holding the vehicle 1 away. Therefore, the security of the smart entry system for the vehicle can be further improved.

  In addition, after unlocking the doors 11a and 11b and before starting the engine, the smart keyless control unit 4 periodically sends a request signal r into the vehicle and forgets to place the request signal r in the vehicle. When the ID signal i from the transmitter 2 other than the transmitter 2 is received and the authentication of the ID is established, the invalidation related to the transmitter 2 that is left in the vehicle is canceled and the passenger is notified of this. That is, there is little noise and relatively free time for the occupant rather than after starting the engine when the noise (for example, engine sound) is relatively loud and the occupant (especially the driver) is relatively busy. Before starting the engine, the occupant can know that the invalidation related to the transmitter 2 that has been left in the vehicle is released. Therefore, the occupant can surely know the release and can deal with the release with a margin. Therefore, the convenience of the smart entry system for this vehicle can be improved.

  In addition, in response to a request signal r transmitted into the vehicle after unlocking the doors 11a and 11b, an ID signal i from a transmitter 2 other than the transmitter 2 that has been left in the vehicle is received, and authentication of the ID is established. Even when there is no transmitter 2 left in the car (for example, when a person other than the user of the vehicle 1 (for example, a vehicle thief) takes the transmitter 2 left in the car out of the car) The smart keyless control unit 4 does not cancel at least the invalidation related to the transmitter 2 that does not exist in the vehicle (see SD7 in FIG. 7). Thus, even if there is a passenger in the vehicle who owns a transmitter 2 other than the transmitter 2 that has been misplaced in the vehicle, when the transmitter 2 that has been misplaced in the vehicle is being taken out of the vehicle, at least the transmitter 2 is concerned. Since the invalidation is not canceled, a person other than the user of the vehicle 1 takes the transmitter 2 left in the vehicle once out of the vehicle, and then (specifically, after the invalidation regarding the transmitter 2 taken out is canceled). It is possible to prevent the vehicle 1 from getting into the vehicle 1 using the taken-out transmitter 2 and escaping. Therefore, the security of the smart entry system for the vehicle can be further improved.

(Other embodiments)
In the above embodiment, the door request switch 50 is provided for the door unlocking operation from the outside of the vehicle. However, the door request switch 50 is not limited to this. For example, the door request switch 50 is provided on the door knobs of the doors 11a and 11b. A capacitance detection sensor may be provided for detecting a door unlocking operation from outside the vehicle by the operator by detecting that a part of the body (for example, a hand) approaches the door knob.

  In the above embodiment, the ignition starter 13 is provided as an engine start switch. However, the present invention is not limited to this, and for example, a button for starting the engine may be provided.

  Further, in the above embodiment, the establishment of the ID code authentication of the transmitter 2 at the time of operation of the ignition starter 13 is invalidated by not starting the engine even if the ID authentication is established. For example, the ID code of the transmitter 2 can be authenticated when the ignition starter 13 is operated by invalidating the ID code, invalidating the transmitter 2, or not collating the ID code. It may be invalidated.

  In the above embodiment, the outdoor transmission antenna 61 is composed of three antennas 61a to 61c, and the indoor transmission antenna 62 is composed of two antennas 62a and 62b. The indoor transmitting antenna 62 may be composed of one or three or more antennas.

  In the above embodiment, the outdoor transmission antenna 61 is configured to transmit radio waves only outside the passenger compartment. Among the outdoor transmission antennas 61, the driver's seat side transmission antenna 61a and the passenger's seat side transmission antenna 61b. The radio wave may be transmitted to the passenger compartment. In this case, the transmitter ID signal i returned by the transmitter 2 is received by the in-vehicle receiving antenna 63 only for the request signal r of the outdoor transmission antenna 61 among the request signals r and r of the outdoor and indoor transmission antennas 61 and 62. The transmitter 2 determines that it exists outside the vehicle near the driver's side door 11a, outside the passenger's side door 11b, or outside the vehicle near the rear end panel 11c, while requesting both the outdoor and indoor transmission antennas 61 and 62. When the transmitter ID signals i and i returned from the transmitter 2 in response to the signals r and r are received by the in-vehicle receiving antenna 63, it is determined that the transmitter 2 exists in the passenger compartment.

  The present invention is not limited to the embodiments, and can be implemented in various other forms without departing from the spirit or main features thereof.

  As described above, the above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. The scope of the present invention is indicated by the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  As described above, according to the present invention, if the ID signal from the portable transceiver is received by the in-vehicle receiver and the authentication of the ID code included in the ID signal is obtained, the vehicle door unlocking and engine This is useful for a smart entry system for vehicles that is started.

1 is a block diagram of a smart keyless system for a vehicle according to an embodiment of the present invention. It is a perspective view which shows the vehicle carrying a vehicle equipment. It is a top view which shows the vehicle carrying a vehicle equipment, (a) And (b) is a figure which shows the state at the time of invalidation control, (c) is a figure which shows the state at the time of invalidation cancellation | release control. It is a flowchart figure of the smart keyless control by a smart keyless control unit and a transmitter control unit. It is a flowchart figure of the door lock control by a smart keyless control unit and a transmitter control unit. It is a flowchart figure of invalidation control by a smart keyless control unit and a transmitter control unit. It is a flowchart figure of invalidation cancellation | release control by a smart keyless control unit and a transmitter control unit. It is a flowchart figure of engine starting control by a smart keyless control unit and a transmitter control unit.

Explanation of symbols

1 Vehicle 2 Transmitter (Portable transceiver)
3 In-vehicle device 4 Smart keyless control unit (door control means, engine control means, invalidation control means)
13 Ignition starter (engine start switch)
50 Door request switch 61 Outdoor transmitting antenna (on-vehicle transmitter)
62 Indoor transmitting antenna (in-vehicle transmitter)
63 Car-mounted receiving antenna (car-mounted receiver)
i Transmitter ID signal j Transponder ID signal L Lock signal U Unlock signal

Claims (4)

An in-vehicle transmitter that wirelessly transmits a request signal;
A portable transceiver that wirelessly transmits an ID signal when the request signal is received;
An in-vehicle receiver that receives the ID signal;
At least when detecting the unlocking operation of the door from the outside of the vehicle, the in-vehicle transmitter transmits the request signal to the outside of the vehicle, and in response to the request signal, the ID signal from the portable transceiver is transmitted to the in-vehicle receiver. And the door control means for unlocking the door when the ID authentication is established,
When the engine start switch in the vehicle is operated, the in-vehicle transmitter transmits the request signal into the vehicle, and the ID signal from the portable transceiver is received by the in-vehicle receiver in response to the request signal. Engine control means for starting the engine when ID authentication is established;
When the door is locked, the in-vehicle transmitter is caused to transmit the request signal into the vehicle, and in response to the request signal, the ID signal from the first portable transceiver is received by the in-vehicle receiver and the ID A smart entry system for a vehicle comprising: an invalidation control means for invalidating authentication of the ID of the first portable transceiver at the time of subsequent operation of the engine start switch when authentication is established;
The invalidation control means transmits the request signal into the vehicle after unlocking the door, and from the second portable transceiver other than the first portable transceiver in response to the request signal. A vehicular smart entry system configured to cancel the invalidation when an ID signal is received and authentication of the ID is established. In the smart entry system for vehicles according to claim 1,
When the invalidation control means receives an ID signal from the second portable transceiver in response to a request signal transmitted into the vehicle after unlocking the door, and the authentication of the ID is established, A smart entry system for a vehicle, which is configured to cancel invalidation and notify a passenger to that effect. In the smart entry system for vehicles according to claim 2,
The invalidation control means causes the request signal to be periodically transmitted into the vehicle after the door is unlocked and before the engine is started, and the request signal is received from the second portable transceiver. When the ID signal is received and authentication of the ID is established, the invalidation is canceled and the passenger is notified of the fact. In the smart entry system for vehicles according to claim 1,
The invalidation control means is a case where an ID signal from the second portable transceiver is received for the request signal transmitted into the vehicle after the door is unlocked, and authentication of the ID is established. However, when the first portable transceiver is not present in the vehicle, at least the invalidation related to the first portable transceiver that is not present in the vehicle is not canceled. Smart entry system.

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