JP5472160B2 - Keyless entry system - Google Patents

Description

  The present invention relates to a keyless entry system that performs verification of a plurality of registered portable devices and performs locking control and unlocking control of a vehicle door.

  Conventionally, the ID code of a portable device confined in the passenger compartment is acquired and stored by vehicle interior verification, and when periodic outside vehicle compartment verification is performed when the vehicle is parked, the vehicle ID is stored based on the stored ID code. It is determined whether the portable device that returns the response signal in response to the request signal of the outdoor transmitter is a portable device confined in the vehicle interior, and the portable device confined in the vehicle interior is the transmitter outside the vehicle In the case of not responding to the request signal, there is one in which periodic outside vehicle compartment matching is continued (for example, see Patent Document 1).

JP 2010-77665 A

  As in the apparatus described in the above-mentioned Patent Document 1, when performing outside-vehicle collation in which a radio wave for collation is transmitted from the outside antenna to the outside of the vehicle compartment to collate the portable device 20 located outside the vehicle compartment, Radio waves for verification may leak into the passenger compartment. And if the radio wave for vehicle exterior verification leaks into the vehicle interior, a malfunction occurs.

  Specifically, if a radio wave for vehicle exterior verification leaks into the vehicle interior (for example, a door pocket), the portable device in the vehicle interior is erroneously detected by vehicle exterior verification, and the portable device is not owned. Can also be locked and unlocked. For this reason, when a portable machine is detected by vehicle interior collation, the door of a vehicle cannot be locked and unlocked.

  However, when another portable device exists outside the passenger compartment, it is preferable that the door of the vehicle can be locked and unlocked even if the portable device is present in the passenger compartment.

  Therefore, by determining whether or not the portable device detected by the vehicle interior verification and the portable device detected by the vehicle interior verification are the same, the portable device existing in the vehicle interior (for example, a door pocket) is identified, and the vehicle interior Even if there is another portable device, if another portable device exists outside the passenger compartment, it may be possible to lock and unlock the door of the vehicle. However, even in this case, it is necessary to ensure security so that the portable device existing in the vehicle interior (for example, a door pocket) cannot lock and unlock the door of the vehicle.

  The present invention has been made in view of the above points, and while ensuring security, there is a portable device outside the vehicle compartment, and another portable device existing in the vehicle compartment leaks into the vehicle compartment verification radio wave that leaks into the vehicle compartment. The purpose is to prevent a vehicle door from being locked and unlocked by reaction.

  In order to achieve the above object, the invention described in claim 1 is a keyless entry system for performing locking and unlocking of a door of a vehicle by collating a plurality of registered portable devices and locking and unlocking the door of the vehicle. When it is determined by the operation determination means and the operation determination means that there is a locking / unlocking operation, the vehicle interior verification and the vehicle interior verification are performed for a specific portable device as a verification target, and the verification target The collation means for detecting the portable device, and when the collation means determines that the portable device to be collated is detected by both the vehicle interior verification and the vehicle interior verification, the verification target is changed to another portable device. And a collation target changing means for carrying out vehicle compartment collation and vehicle compartment collation, and according to the collation result of the collation means, the portable device to be collated is detected by the collation outside the vehicle compartment and is not detected by the vehicle compartment collation, Unlocking It is characterized by carrying out the unlocking control in accordance with the.

  According to such a configuration, the comparison target outside machine and the vehicle interior verification are performed on a specific portable device as a verification target to detect the verification target portable device, and the verification target portable device is detected by both the vehicle exterior verification and the vehicle interior verification. If it is determined that the machine has been detected, the collation target is changed to another portable machine, the collation means performs the vehicle exterior verification and the vehicle interior verification, and the mobile device to be verified is detected by the vehicle exterior verification. When it is determined that it is not detected in the room verification, the locking / unlocking control is performed according to the locking / unlocking operation. It is possible to prevent the portable device from being locked or unlocked in response to the vehicle exterior verification radio wave leaking into the vehicle interior.

  Further, as in the invention described in claim 2, a table is provided that defines the priority of the collation order for all of the plurality of registered portable devices, and the collation target changing means sequentially changes the collation target according to the table can do.

  According to a third aspect of the present invention, there is provided a table that defines the priority of the collation order for all of the plurality of registered portable devices, and the collation means refers to the table and has the highest priority. Car interior verification and vehicle interior verification are performed for high portable devices, and the verification target changing means determines that the verification target portable device is detected by both the vehicle exterior verification and the vehicle interior verification by the verification means. In this case, the verification target is changed to the portable device having the second highest priority after the portable device detected by both the vehicle exterior verification and the vehicle interior verification, and the portable device detected by both the vehicle exterior verification and the vehicle interior verification is changed. It is also possible to update the table so that the priority order is lowest.

It is a figure which shows the structure of the keyless entry system which concerns on 1st Embodiment of this invention. It is a figure which shows the collation area of each vehicle exterior antenna, and the collation area of a vehicle interior antenna. It is a flowchart at the time of unlocking operation by collation ECU which concerns on 1st implementation mobile phone. It is a figure for demonstrating the table which prescribed | regulated the collation order. It is a flowchart at the time of unlocking operation by collation ECU which concerns on 2nd implementation mobile phone. It is a figure for demonstrating the table which shows the priority of collation order.

(First embodiment)
FIG. 1 shows the configuration of the keyless entry system according to the first embodiment of the present invention. This keyless entry system is mounted on a vehicle and sends out radio waves for collating the portable device 20 used as an electronic key from the vehicle interior antenna 12a and the vehicle interior antenna 12b provided in each part of the vehicle. Accordingly, the portable device 20 is collated by determining whether to receive the response data returned from the portable device 20, and the door of the vehicle is locked and unlocked according to the collation result.

  The keyless entry system includes a vehicle-mounted device composed of a verification ECU 10, a touch sensor 11, a vehicle exterior antenna 12 a, a vehicle interior antenna 12 b and a tuner 13, a portable device 20, a main body ECU 30, and a lock motor 40.

  The touch sensor 11 detects an operation of locking / unlocking the door of the vehicle, and is disposed near the door knob of the vehicle. A signal corresponding to a user's touch operation is output from the touch sensor 11 to the verification ECU 10.

  The vehicle interior antenna 12a transmits a radio wave for collating the portable device 20 located outside the vehicle interior. In the present embodiment, the driver seat (D seat), the passenger seat (P seat), the driver seat side rear seat (DR seat), the passenger seat rear seat (PR seat), the back door (BD seat) or the trunk (TR ), The five vehicle interior antennas 12a are attached to the vehicle.

  The vehicle interior antenna 12b transmits radio waves for collating the portable device 20 located in the vehicle interior.

  The tuner 13 is a device for receiving response data returned from the portable device 20.

  The verification ECU 10 is configured as a computer including a CPU, a RAM, a ROM, an EEPROM, an I / O, and the like, and the CPU performs various processes according to a program stored in the ROM.

  As processing of the verification ECU 10, a radio wave for verification is transmitted from the vehicle exterior antenna 12a to the outside of the vehicle interior, and the radio wave transmitted from the portable device 20 in response to this radio wave is received and collated, so that A vehicle outside verification for detecting the portable device 20 located, a radio wave for verification from the vehicle interior antenna 12b is transmitted to the vehicle interior, and a radio wave transmitted from the portable device 20 in response to this radio wave is received and verified. There is a vehicle interior verification for detecting the portable device 20 located in the vehicle interior.

  In FIG. 2, the collation area of each vehicle interior antenna 12a and the collation area of the vehicle interior antenna 12b are shown. As shown in the figure, some of the radio waves transmitted from the vehicle exterior antennas 12a leak into the vehicle interior. For example, in a region where the verification area of each vehicle interior antenna 12a and the verification area of the vehicle interior antenna 12b overlap (for example, a region X indicated by hatching in the figure), the portable device 20 performs both vehicle interior verification and vehicle exterior verification. Is detected. Further, radio waves transmitted from the vehicle interior antenna 12b are prevented from leaking outside the vehicle interior.

  The verification ECU 10 and the main body ECU 30 are connected via a vehicle LAN (CAN).

  The main body ECU 30 is configured as a computer including a CPU, a RAM, a ROM, an EEPROM, an I / O, and the like, and the CPU performs various processes according to a program stored in the ROM.

  The main body ECU 30 controls the lock motor 40 provided at each door of the vehicle to perform locking control and unlocking control of the vehicle door.

  A unique key ID is assigned to the portable device 20, and the key IDs of a plurality of authorized portable devices 20 are stored in the EEPROM of the verification ECU 10 when the vehicle is delivered. In the present embodiment, three portable devices (key A, key B, and key C) are registered.

  When each portable device 20 receives a request signal including its own key ID from the vehicle interior antenna 12a and the vehicle interior antenna 12b, it returns response data including its own key ID.

  When the collation ECU 10 performs a vehicle exterior collation and a vehicle interior collation for a specific portable device 20 as a collation target, and determines that the collation target portable device is detected by the vehicle exterior collation and not detected by the vehicle interior collation, Processing for performing locking control and unlocking control according to door locking and unlocking operations is performed.

  FIG. 3 shows a flowchart of the verification ECU 10 during the unlocking operation. The verification ECU 10 periodically performs the process shown in FIG. It is assumed that the vehicle door is locked.

  First, it is determined whether or not there is a smart unlock operation (S100). Specifically, it is determined whether or not there is a smart lock operation based on whether or not a signal corresponding to the user's unlock operation is input from the touch sensor 11.

  Here, when the signal according to a user's unlocking operation is not input from the touch sensor 11, determination of S100 becomes NO and repeats determination of S100.

  If a signal corresponding to the unlocking operation is input from the touch sensor 11, the determination in S100 is YES, and then 1 is substituted into a variable n indicating the collation order (S102).

  In the present embodiment, three regular portable devices (key A, key B, key C) are registered, and the registered three portable devices (keys) are stored in the RAM of the verification ECU 10 as shown in FIG. For A, key B, and key C), a table defining the collation order is stored. The verification ECU 10 changes the portable device 20 to be verified with reference to this table. Here, 1 is substituted into a variable n indicating the collation order.

  Next, the n-th key ID is acquired, and it is determined whether or not the portable device 20 to be verified has been detected by the vehicle exterior verification (S104). Here, the vehicle outside verification is performed using the key A with n = 1 as a verification target, and it is determined whether or not the portable device 20 to be verified has been detected by the verification outside the vehicle.

  Here, when the portable device 20 (key A) to be collated is detected by the outside vehicle collation, the determination in S104 is YES, and then the vehicle interior collation is performed. It is determined whether 20 is detected (S106). That is, the vehicle interior verification is performed, and it is determined whether or not the portable device 20 (key A) to be verified is detected even in the vehicle interior verification.

  Here, in the case where the portable device 20 (key A) is located in a location where radio waves for outside-vehicle collation leak, even in the vehicle interior, such as the region X shown in FIG. Becomes YES, and then 1 is added to the variable n indicating the collation order (S110).

  Next, it is determined whether or not the variable n indicating the collation order is equal to or less than the number of mobile devices 20 registered (here, 3) (S112). Here, since the variable n indicating the collation order is 2, the determination in S112 is YES, and the process returns to S104.

  As described above, even when the portable device 20 (key A) is located in a place where radio waves for outside-vehicle collation leak, even in the vehicle interior, such as the region X shown in FIG. Unlocking control is not performed.

  In S104, the n-th key ID is acquired again, and it is determined whether or not the portable device 20 to be verified has been detected by the vehicle exterior verification. Here, the vehicle B is collated with the key B where n = 2 being the collation target, and it is determined whether or not the portable device 20 to be collated is detected by the collation outside the vehicle.

  Here, when the portable device 20 (key B) to be collated is detected by the vehicle exterior verification, the determination in S104 is YES, and then the vehicle interior verification is performed. It is determined whether 20 (key B) is detected (S106). That is, the vehicle interior verification is performed, and it is determined whether or not the portable device 20 (key B) to be verified is detected even in the vehicle interior verification.

  Here, even if the portable device 20 (key B) is located in a place where radio waves for outside-vehicle collation leak, even in the vehicle interior, such as the region X shown in FIG. The determination is YES, and then 1 is added to the variable n indicating the collation order (S110).

  Next, it is determined whether or not the variable n indicating the collation order is equal to or less than the number of mobile devices 20 registered (here, 3) (S112). Here, since the variable n indicating the collation order is 3, the determination in S112 is YES, and the process returns to S104.

  Thus, even when the portable device 20 (key B) is located in a vehicle interior such as the region X shown in FIG. Unlocking control is not performed.

  In S104, the n-th key ID is acquired again, and it is determined whether or not the portable device 20 to be verified has been detected by the vehicle exterior verification. Here, outside-vehicle compartment matching is performed with the key C where n = 3 as the subject of matching, and it is determined whether or not the portable device 20 to be checked has been detected by outside-vehicle matching.

  Here, when the portable device 20 (key C) to be collated is detected by the vehicle exterior verification, the determination in S104 is YES, and then the vehicle interior verification is performed. It is determined whether 20 is detected (S106).

  Here, when the collation target portable device 20 (key C) is located outside the vehicle compartment, the collation target portable device 20 (key C) is not detected by the vehicle compartment collation, so the determination in S106 is NO and unlocked. (S108). Specifically, a signal instructing unlocking of the vehicle door is sent to the main body ECU 30. The main body ECU 30 controls the lock motor 40 in accordance with a signal instructing the unlocking of the vehicle door to unlock the vehicle door. In this way, when the portable device 20 (key C) is located outside the vehicle compartment and is detected by the vehicle exterior verification, and is not detected by the vehicle interior verification, unlock control is performed.

  Note that when the key A, the key B, and the key C are all located within a vehicle interior such as the region X shown in FIG. The determination in S104 is YES, the determination in S106 is YES, the determination in S112 is NO, and the process returns to S100 without performing the unlock control.

  Further, when all of the key A, key B, and key C are located within the vehicle interior verification area and outside the vehicle interior verification area, the determination in S104 is NO. Accordingly, the vehicle interior verification is performed with the key A as the verification target, the vehicle exterior verification is performed with the key B as the verification target, and then the vehicle interior verification is performed with the key C as the verification target. This determination is NO, and the process returns to S100 without performing the unlock control.

  According to the above-described configuration, the portable device to be collated is detected by executing the vehicle exterior verification and the vehicle interior verification for a specific portable device as a verification target, and both the vehicle exterior verification and the vehicle interior verification are performed. Is detected, the collation target is changed to another portable device, the collation means performs the vehicle exterior verification and the vehicle interior verification, the verification target portable device is detected by the vehicle exterior verification, and the vehicle interior When it is determined that it is not detected by the collation, unlock control according to the unlocking operation is performed, so that while ensuring security, there is another portable device outside the vehicle compartment, It is possible to prevent the door of the vehicle from being unlocked in response to a radio wave of outside-vehicle collation leaking into the vehicle interior.

  In addition, as described above, a table in which the priority of the collation order is defined for all of the plurality of registered mobile devices is provided, and the collation target can be sequentially changed according to the table.

(Second Embodiment)
The configuration of the keyless entry system according to the second embodiment of the present invention is the same as that shown in FIG. The same parts as those in the above embodiment are denoted by the same reference numerals and the description thereof is omitted. Hereinafter, different points will be mainly described. The collation ECU 10 according to the first embodiment changes the portable device 20 to be collated with reference to a table that defines the collation order, but the collation ECU 10 according to the present embodiment sets the collation priority. While changing the collation priority according to the specified table, the collation target portable device 20 is changed.

  FIG. 5 shows a flowchart of the verification ECU 10 during the unlocking operation. The verification ECU 10 periodically performs the process shown in FIG. It is assumed that the vehicle door is locked.

  First, the verification ECU 10 determines whether or not there is a smart unlock operation (S100). If it is determined that there is a smart unlock operation, next, 1 is substituted into a variable n indicating the verification order (S102). Then, it is determined whether or not the portable device 20 to be verified has been detected by performing out-of-cabin verification (S104).

  In the RAM of the verification ECU 10 in this embodiment, as shown in FIG. 6, the registered three portable devices (key A, key B, key C) are verified against all of the registered portable devices. A table defining the order of priority is stored. The verification ECU 10 refers to this table and identifies the portable device 20 to be verified. Here, the key A having the highest priority of matching is used as a check target, the outside-vehicle compartment matching is performed, and it is determined whether or not the portable device 20 to be checked is detected by the outside-vehicle matching.

  Here, when the portable device 20 (key A) to be collated is detected by the outside vehicle collation, the determination in S104 is YES, and then the vehicle interior collation is performed. It is determined whether 20 is detected (S106). That is, the vehicle interior verification is performed, and it is determined whether or not the portable device 20 (key A) to be verified is detected even in the vehicle interior verification.

  Here, in the case where the portable device 20 (key A) is located in a location where radio waves for outside-vehicle collation leak, even in the vehicle interior, such as the region X shown in FIG. YES, and then the table is changed so that the priority order of the portable device 20 (key A) detected by both the vehicle interior verification and the vehicle interior verification is lowest (S200), and the process returns to S100.

  As described above, even when the portable device 20 (key A) is located in a place where radio waves for outside-vehicle collation leak, even in the vehicle interior, such as the region X shown in FIG. Unlocking control is not performed.

  Next, the verification ECU 10 determines whether or not there is a smart unlock operation (S100). If it is determined that there is a smart unlock operation, 1 is substituted into a variable n indicating the verification order (S102), and the key The determinations of S104 and S106 are carried out with the portable device 20 (key B) positioned next to A as the object of collation.

  Here, for example, when the portable device 20 (key B) is located in the vehicle interior and the portable device 20 to be collated is not detected by the outside vehicle collation, the determination in S104 is NO, and then a variable n indicating the collation order. 1 is added to (S110).

  Next, it is determined whether or not the variable n indicating the collation order is equal to or less than the number of mobile devices 20 registered (here, 3) (S112). Here, since the variable n indicating the collation order is 2, the determination in S112 is YES, and the process returns to S104.

  Thus, when the portable device 20 to be verified is not detected by the vehicle exterior verification, the unlock control is not performed.

  Next, the determinations in S104 and S106 are performed with the portable device 20 (key C) positioned next to the key B as a verification target.

  Here, for example, when the portable device 20 (key C) is located outside the passenger compartment, the determination in S104 is YES, the determination in S106 is NO, and unlocking is performed (S108). Specifically, a signal instructing unlocking of the vehicle door is sent to the main body ECU 30. The main body ECU 30 controls the lock motor 40 in accordance with a signal instructing the unlocking of the vehicle door to unlock the vehicle door. In this way, when the portable device 20 (key C) is located outside the vehicle compartment and is detected by the vehicle exterior verification, and is not detected by the vehicle interior verification, unlock control is performed.

  As described above, there is provided a table that defines the priority of the collation order for all of the plurality of registered portable devices, and the collating means refers to the table and refers to the portable device having the highest priority as a collation target. When outdoor verification and vehicle interior verification are performed and it is determined that the portable device subject to verification is detected by both vehicle exterior verification and vehicle interior verification, the verification target is detected by both vehicle interior verification and vehicle interior verification. It is also possible to change to a portable device having the next highest priority after the portable device, and update the table so that the priority of the portable device detected by both the vehicle interior verification and the vehicle interior verification becomes the lowest.

(Other embodiments)
In the first and second embodiments, the operation when the unlocking operation of the vehicle door is performed has been described, but the present invention can also be applied to the case where the locking operation of the vehicle door is performed. In this case, it may be determined whether or not there is a smart lock operation in S100, and the lock may be performed in S108.

  In the first and second embodiments, the example in which the portable device 20 to be collated is changed with reference to the table for specifying the collation order has been described. However, the portable device to be collated using another method. The machine 20 may be changed.

  The correspondence relationship between the configuration in the embodiment and the configuration of the claims will be described. S100 corresponds to the operation determination unit, S104 and S106 correspond to the verification unit, and S110, S112, and S200 correspond to the verification target change unit. Equivalent to.

10 Verification ECU
11 Touch sensor 12a Antenna outside vehicle compartment 12b Antenna inside vehicle compartment 13 Tuner 20 Portable device 30 Main body ECU
40 Lock motor

Claims (3)

A keyless entry system that performs verification of a plurality of registered portable devices and locks and unlocks a vehicle door,
Operation determining means for determining whether or not there is an unlocking operation of the door of the vehicle;
When it is determined by the operation determination means that there is the locking / unlocking operation, collation means for performing a vehicle exterior collation and a vehicle interior collation for a specific portable device as a collation target and detecting the collation target portable device;
When it is determined by the collating means that the portable device to be collated has been detected both in the vehicle exterior collation and in the vehicle interior collation, the collation target is changed to another portable device, and the vehicle is inspected by the collating device. A collation target changing means for performing outdoor collation and vehicle compartment collation,
When the collation result of the collating means detects the portable device to be collated as a result of outside collation, and determines that the portable device is not detected in the vehicle compartment collation, it performs locking / unlocking control according to the locking / unlocking operation. Keyless entry system. A table defining the priority of the collation order for all of the plurality of registered portable devices;
The keyless entry system according to claim 1, wherein the collation target changing unit sequentially changes the collation target according to the table. A table defining the priority of the collation order for all of the plurality of registered portable devices;
The collating means refers to the table, performs the vehicle exterior collation and the vehicle interior collation with respect to the portable device having the highest priority as a collation target,
When the collation target changing unit determines that the collation target portable device is detected by both the collation outside the vehicle compartment and the collation inside the vehicle, the collation target is changed to the collation target outside Change to the portable device with the next highest priority after the portable device detected in both the vehicle interior verification, so that the priority of the portable device detected in both the vehicle exterior verification and the vehicle interior verification becomes the lowest. 2. The keyless entry system according to claim 1, wherein the table is updated.

Images