JP2006161545A - On-vehicle device for smart entry system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable smart entry system to have both security and convenience. <P>SOLUTION: In an on-vehicle device for smart entry system, high accurate smart authentication processing having a long ID code to be checked by a portable device is carried out when authentication execution conditions for permitting unlocking are satisfied(S410), and when the authentication succeeds (S420:YES), low accurate biometrics authentication(in this case face authentication) having a few images to be checked is carried out(S440), and when the authentication succeeds (450:YES), unlocking of a door is permitted (S460). When authentication execution conditions for permitting start are satisfied, high accurate face authentication having many images to be checked is carried out (S510), and when the authentication succeeds (520:YES), low accurate smart authentication processing having a short ID code to be checked by the portable device is carried out (S530), and when the authentication succeeds (S540:YES), start of engine is permitted (S550). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an in-vehicle device for a smart entry system.

  Conventionally, in an automobile, a transmission request signal is transmitted from a vehicle-mounted transmitter to a predetermined range, and a return signal from the portable device that has received the transmission request signal is received by the vehicle-mounted receiver, thereby controlling the vehicle side. The device compares the ID code as identification information included in the return signal received by the in-vehicle receiver with the ID code registered in advance in the control device, and the two ID codes match. If so, there is known a smart entry system that performs vehicle control such as door unlocking (unlocking) or unlocking permission or engine start permission by driving an actuator, assuming that authentication has succeeded (for example, Patent Documents). 1 and 2).

  According to such a smart entry system, since the vehicle control such as door unlocking is performed without the user performing a special key operation, the convenience can be improved. Therefore, this type of smart entry system is becoming widespread in many types of vehicles, and therefore further improvement in security is desired.

  However, in the conventional smart entry system, for example, there is a possibility that security cannot be ensured against an illegal act called a relay team attack. A relay team attack is a method in which a plurality of unauthorized persons sequentially relay transmission request signals (inquiry signals) from an automobile side by a repeater to extend to a portable device of a regular user far away from the vehicle, and from the portable device. The return signal to be transmitted is also an act of unlocking the door illegally as if the authorized user is on the side of the car by relaying sequentially to the car by the repeater (for example, Patent Document 3). .

Therefore, in order to ensure high security against such illegal acts, authentication by wireless communication with a portable device (in other words, authentication of the portable device) and biometric information such as fingerprints and face images (biological information) ) Authentication (so-called biometric authentication, that is, authentication of the user itself) has been proposed (see, for example, Patent Documents 3 and 4).
JP 2000-104429 A JP 2003-157383 A JP 2003-178032 A JP 2000-85536 A

  However, if the authentication of the portable device and the biometric authentication are simply performed twice, the security can be improved, but an erroneous determination occurs that the authentication is not successful despite being a regular user. It becomes easy and it becomes difficult to achieve both security and convenience.

Also, by performing double authentication, the time required for successful authentication tends to be long, and it is difficult to achieve both security and convenience.
Accordingly, an object of the present invention is to provide an in-vehicle device for a smart entry system that is suitable for achieving both security and convenience of a smart entry system.

  In the in-vehicle device for smart entry system according to claim 1 (hereinafter, also simply referred to as in-vehicle device) made to achieve the above object, a transmission request signal is transmitted from a transmitter to a predetermined range, and is transmitted to a user. A return signal to be transmitted is received by the receiver when the possessed portable device receives the transmission request signal.

  Then, the smart authentication means transmits a transmission request signal from the transmitter, and when the return signal from the portable device is received by the receiver, the identification information included in the return signal is a registered identification. Authentication is performed by determining whether it is information.

  Furthermore, in the in-vehicle device according to claim 1, detection means for detecting the biological information of the user and whether the biological information detected by the detection means is the biological information of the authorized user registered in advance. Biometric authentication means for performing authentication by determining whether or not.

  In this in-vehicle device, when a predetermined authentication execution condition is satisfied, first, the smart authentication unit is activated, and then the biometrics authentication unit is activated, and the biometrics authentication unit is successfully authenticated. The control means implements specific vehicle control.

  The smart authentication means that the authentication is successful means that the return signal from the portable device is received, and that the identification information included in the return signal is determined to be pre-registered identification information. Yes, and that the biometrics authentication means succeeds in authentication means that it is determined that the detected biometric information is biometric information of a regular user registered in advance. On the other hand, the biometric information to be detected (that is, biometric information used for authentication by the biometrics authentication unit) may be anything that represents the physical characteristics of a human being. There are irises, voice prints, veins, faces (faces), and so on. That is, as the biometric authentication performed by the biometric authentication means, an authentication method using a fingerprint, an iris, a voiceprint, a vein, a face (face), or the like can be considered.

  Further, the in-vehicle device according to claim 1 is provided with a determination reference value changing unit, and the determination reference value changing unit uses the determination reference value used when the biometrics authentication unit performs authentication as a smart authentication unit. Depending on the authentication result, the biometric information detected by the detecting means is registered in advance when the smart authenticating means does not succeed in the authentication, rather than when the smart authenticating means succeeds in the authentication. So that it is difficult to determine that it is biometric information of the person. Note that the case where the smart authentication means has not succeeded in authentication means that even if the transmission request signal is transmitted, for example, the return signal from the portable device has not been received within the specified time, or the return signal from the portable device has not been received. This is a case where, although received, it is determined that the identification information included in the return signal is not pre-registered identification information.

  That is, in the in-vehicle device of claim 1, not only authentication by wireless communication with a portable device (so-called authentication of the portable device) but also biometric authentication using human biological information (so-called, the user itself). Authentication criteria), the criteria used when the biometrics authentication means authenticates (the judgment criteria value for biometrics authentication) depending on whether or not the smart authentication means succeeds in authentication. If the smart authentication means succeeds in authentication and the biometrics authentication means is set low so that the authentication is easy, the smart authentication means does not succeed in authentication. In this case, the determination criterion value is set high so that the biometric authentication means is difficult to succeed in authentication.

  According to such an in-vehicle device of claim 1, even if the portable device is passed over to a third party or the above-described relay team attack is performed, unless the authentication by the biometrics authentication means is successful (that is, The vehicle is not controlled by the control means unless it is authenticated that the user is a registered regular user based on biological information. Therefore, security can be improved. Biometric authentication does not require the user to carry a new key.

  In particular, in the in-vehicle device according to claim 1, when the authorized user has a legitimate portable device, the smart authentication means succeeds in the authentication, and the biometrics authentication means easily succeeds in the authentication. Therefore, it is possible to prevent the occurrence of an erroneous determination such as “the biometrics authentication unit does not succeed in authentication even though the detection unit detects the biometric information of a regular user registered in advance”, thereby ensuring convenience. . Conversely, when the smart authentication means does not succeed in authentication, the biometric authentication means is difficult to succeed in authentication, so high security is ensured.

Therefore, according to the vehicle-mounted device of claim 1, security and convenience can be achieved at a high level.
The in-vehicle device according to claim 1 is particularly effective when the authentication performed by the biometric authentication means is face authentication.

  That is, in this case, as described in claim 2, the detection means images a human face as biometric information, and the biometrics authentication means uses the regular use in which the face photographed by the detection means is registered in advance. Authentication is performed by determining whether or not it is a person's face, but in face authentication, the shooting conditions such as the angle and brightness when shooting the face are used as well as the hairstyle, wrinkles, etc. The change of the face itself affects the authentication (that is, the determination of whether or not the face is a regular user). Therefore, in order to avoid the above erroneous determination, the determination reference value is set to a sweet value at which authentication is easy to succeed. The possibility of misjudging that the face is a legitimate user is increased, and the security is lowered. On the other hand, according to the in-vehicle device of claim 1, such a problem can be solved. In particular, according to the in-vehicle device of claim 2, high security by face authentication and prevention of erroneous determination are achieved. It is possible to achieve both.

  Next, the in-vehicle device of claim 3 includes first smart authentication means and second smart authentication means, and first biometric authentication means and second biometric authentication means.

  Each of the first and second smart authentication means transmits a transmission request signal within a predetermined range, and a return signal transmitted when the portable device possessed by the user receives the transmission request signal. Is a means for performing authentication by determining whether or not the identification information included in the received return signal is pre-registered identification information.

  Each of the first and second biometric authentication means detects human biological information, and determines whether the detected biological information is biological information of a regular user registered in advance. It is a means for performing authentication.

  Further, the second smart authentication means performs authentication with lower accuracy than the first smart authentication means, and the first biometric authentication means performs authentication with lower accuracy than the second biometric authentication means. It has become.

  In this in-vehicle device, when a predetermined authentication execution condition is satisfied, first, the first smart authentication means is activated, and when the first smart authentication means is successfully authenticated, the first biometric authentication means When the first biometric authentication means succeeds in authentication, the specific vehicle control is performed. Hereinafter, the case where both the first smart authentication unit and the first biometric authentication unit are successfully authenticated and specific vehicle control is performed will be referred to as “case 1”.

  In addition, when the first smart authentication means is not successfully authenticated, the second biometric authentication means is activated, and when the second biometric authentication means is successfully authenticated, the second smart authentication means When the second smart authentication means succeeds in authentication, the specific vehicle control is performed. Hereinafter, a case where both the second biometric authentication unit and the second smart authentication unit are successfully authenticated and specific vehicle control is performed will be referred to as “case 2”.

  According to such an in-vehicle device of claim 3, in any case of “Case 1” and “Case 2”, only when the two authentications by the smart authentication unit and the biometrics authentication unit are successful, Vehicle control will be implemented. Therefore, high security can be ensured, and even if an action called the above-described relay team attack is performed, it is possible to prevent specific vehicle control from being performed illegally.

  In addition, the second smart authentication means that succeeds in authentication later in “Case 2” performs authentication with lower accuracy than the first smart authentication means that succeeds in authentication in “Case 1” first. The first biometric authentication means that succeeds in authentication in “Case 1” later performs authentication with a lower accuracy than the second biometric authentication means that succeeds in authentication in “Case 2”. To do. Therefore, in both “Case 1” and “Case 2”, it is possible to prevent an increase in the time required for successful authentication while ensuring high security. The lower the accuracy of authentication, the shorter the time and information processing required to acquire information for authentication (identification information from a portable device or human biological information), and the time required for successful authentication is shorter. Because it becomes.

Therefore, according to the in-vehicle device of claim 3, the security and convenience of the smart entry system can be achieved at a high level.
Note that “authentication with low accuracy” for smart authentication means, for example, that the amount of identification information used for authentication is small, and “authentication with low accuracy” for biometrics authentication means is, for example, authentication. This means that the amount of biometric data used in the system is small.

  Therefore, as described in claim 4, for example, the data amount of the identification information used by the second smart authentication unit for authentication is smaller than the data amount of the identification information used by the first smart authentication unit for authentication. And the amount of biometric information used by the first biometric authentication unit for authentication is smaller than the amount of biometric data used by the second biometric authentication unit for authentication. It ’s fine.

Next, the in-vehicle device according to claim 5 includes the same two smart authentication means and two biometric authentication means as in the in-vehicle device according to claim 3.
In this in-vehicle device, when a predetermined authentication execution condition is satisfied, first, the first biometric authentication unit is activated, and when the first biometric authentication unit is successfully authenticated, the first smart authentication is performed. When the means is activated and the first smart authentication means succeeds in authentication, the specific vehicle control is implemented. Hereinafter, a case where both the first biometric authentication unit and the first smart authentication unit are successfully authenticated and specific vehicle control is performed will be referred to as “case A”.

  In addition, when the first biometric authentication means is not successfully authenticated, the second smart authentication means is activated, and when the second smart authentication means is successfully authenticated, the second biometric authentication means When the second biometric authentication means succeeds in authentication, the specific vehicle control is performed. Hereinafter, the case where both the second smart authentication unit and the second biometric authentication unit are successfully authenticated and specific vehicle control is performed is referred to as “case B”.

  Further, in this in-vehicle device, the second biometric authentication means performs authentication with a lower accuracy than the first biometric authentication means, and the first smart authentication means has a higher accuracy than the second smart authentication means. Authentication is low.

  According to the in-vehicle device of the fifth aspect, similarly to the in-vehicle device of the third aspect, in both cases “case A” and “case B”, the smart authentication means and the biometric authentication means 2 Only after successful authentication, specific vehicle control is performed, so that high security can be ensured.

  In addition, the second biometric authentication unit that succeeds in authentication in “Case B” later authenticates less accurately than the first biometric authentication unit that succeeds in authentication in “Case 1”. The first smart authentication means that succeeds in authentication in “Case A” later performs authentication that is less accurate than the second smart authentication means that succeeds in authentication in “Case 2”. To do. For this reason, as in the case of the in-vehicle device of claim 3, in both “Case A” and “Case B”, it takes a long time to succeed in authentication while ensuring high security. Can be suppressed.

Therefore, even with the in-vehicle device of claim 5, the security and convenience of the smart entry system can be achieved at a high level.
The second biometric authentication unit performs authentication with lower accuracy than the first biometric authentication unit, and the first smart authentication unit performs authentication with lower accuracy than the second smart authentication unit. For example, as described in claim 6, the amount of biometric information used by the second biometric authentication unit for authentication is greater than the amount of biometric data used by the first biometric authentication unit for authentication. And the amount of identification information used by the first smart authentication means for authentication is smaller than the amount of identification information used by the second smart authentication means for authentication. Just do it.

Next, the in-vehicle device according to claim 7 includes the same two smart authentication means and two biometric authentication means as in the in-vehicle device according to claim 3.
Then, in this in-vehicle device, the first smart authentication means is activated when a predetermined first authentication execution condition is established, and when the first smart authentication means is successfully authenticated, the first biometric authentication is performed. When the means is activated and the first biometric authentication means succeeds in authentication, specific vehicle control is performed.

  In addition, when a predetermined second authentication execution condition is satisfied, the second biometric authentication means is activated, and when the second biometric authentication means is successfully authenticated, the second smart authentication means is activated. When the second smart authentication means succeeds in authentication, the specific vehicle control or vehicle control different from the specific vehicle control is performed.

  Further, in this in-vehicle device, the second smart authentication means performs authentication with lower accuracy than the first smart authentication means, and the first biometric authentication means has higher accuracy than the second biometric authentication means. Authentication is low.

  According to such an on-vehicle apparatus of claim 7, two authentications of the smart authentication means and the biometric authentication means are successful regardless of which of the first authentication execution condition and the second authentication execution condition is satisfied. Only then will vehicle control be performed. Therefore, high security can be ensured, and it is possible to prevent the vehicle control from being performed illegally even if the action referred to as the relay team attack is performed.

  Moreover, the second smart authentication means that operates later when the second authentication execution condition is satisfied is the first smart authentication means that operates first when the first authentication execution condition is satisfied. The first biometric authentication means that performs later authentication when the first authentication execution condition is satisfied and the first biometric authentication means that operates later when the second authentication execution condition is satisfied is performed first. Authentication is performed with lower accuracy than the second biometric authentication means. For this reason, regardless of which of the first authentication execution condition and the second authentication execution condition is satisfied, it is possible to prevent the required time until the authentication is successful while ensuring high security. can do.

Therefore, even with the in-vehicle device according to the seventh aspect, the security and convenience of the smart entry system can be achieved at a high level.
The second smart authentication means performs authentication with lower accuracy than the first smart authentication means, and the first biometric authentication means performs authentication with lower accuracy than the second biometric authentication means. For example, as described in claim 8, the data amount of identification information used by the second smart authentication unit for authentication is smaller than the data amount of identification information used by the first smart authentication unit for authentication. And the amount of biometric information used by the first biometric authentication unit for authentication is smaller than the amount of biometric data used by the second biometric authentication unit for authentication. Just do it.

Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
FIG. 1 is a block diagram showing a configuration of a smart entry system 1 according to the first embodiment to which the present invention is applied.

  As shown in FIG. 1, a smart entry system 1 according to the first embodiment is installed in a portable device 3 as an electronic key possessed by a vehicle user and a predetermined position of the vehicle, and detects the biological information of the user. Authentication using the biometrics authentication sensor 5 to be performed and the identification information acquired by wireless communication with the portable device 3 and the biometric information acquired via the sensor 5 is successfully performed. Then, a control ECU 7 that outputs a command for executing specific vehicle control, and a door ECU 9 and an engine ECU 11 that receive the command from the control ECU 7 and execute vehicle control are provided.

  Of these, the door ECU 9 enters an unlock standby state upon receiving a command for permitting release of the door lock (hereinafter referred to as an unlock permission command) from the control ECU 7, and thereafter, for example, the inside of the door knob on the outside of the driver's seat door of the vehicle. When it is detected that a person touches a touch sensor (not shown) provided on a side surface, at least automatic door unlock control for automatically unlocking each door is executed.

  Further, the engine ECU 11 enters a start standby state upon receiving a command for permitting engine start (hereinafter referred to as a start permission command) from the control ECU 7, and thereafter, for example, a start switch (not shown) provided near the steering wheel is provided. It is configured to execute at least engine start control for starting the engine when operated.

  Further, on the vehicle side, a transmitter 13 for transmitting a transmission request signal to the portable device 3, and a receiver 15 for receiving a return signal transmitted as a response to the transmission request signal from the portable device 3, A trigger switch 17 for providing a trigger for starting biometric authentication to the control ECU 7 is provided, and these are connected to the control ECU 7.

  In the present embodiment, the control ECU 7 performs face authentication as biometric authentication. For this reason, the sensor 5 captures a human face and uses the data of the captured image as biometric information. A camera that outputs to the control ECU 7 is used. And the sensor 5 is installed so that the face of the person who stood beside the driver's seat door of a vehicle may be image | photographed, for example.

Moreover, the trigger switch 17 is provided in the outer surface in the door knob outside a driver's seat door, for example.
On the other hand, the transmitter 13 is provided at each door of the vehicle, and in response to a command from the control ECU 7, a transmission request signal (in the present embodiment, hundreds of tens) (kHz band signal).

  The receiver 15 is incorporated in, for example, a room mirror in front of the driver's seat, and a return signal (in this embodiment, several in this embodiment) transmitted in response to a transmission request signal from the portable device 3 in the wireless communication area. 100 MHz band signal) is received, and the ID code as identification information included in the return signal is decoded and output to the control ECU 7.

  Next, the portable device 3 includes a transmitter / receiver 31 that receives the transmission request signal and transmits the return signal, and a memory 33 that stores an ID code as identification information given to the portable device 3 in advance. I have. The transmitter / receiver 31 is activated when receiving a transmission request signal transmitted from the transmitter 13 on the vehicle side, and transmits a return signal including the ID code stored in the memory 33. .

  Here, the control ECU 7 is mainly configured by a known microcomputer having a CPU, a ROM, and a RAM. The ROM includes a portable device for the vehicle (that is, a vehicle on which the control ECU 7 is mounted). 3 is stored, and image data obtained by photographing the face of the user of the vehicle (hereinafter referred to as registration) as biometric information of a regular user registered in advance. (Referred to as face data).

When the control ECU 7 confirms that all the doors are locked after the vehicle is parked, the control ECU 7 executes the entry process of FIG. 2 assuming that the authentication execution condition is satisfied.
Hereinafter, the entry process will be described with reference to the flowchart of FIG.

  When the control ECU 7 starts entry processing, first, smart authentication processing is performed (S110). That is, in the smart authentication process of S110, a transmission request signal is transmitted from the transmitter 13 at regular intervals, a return signal from the portable device 3 is received by the receiver 15, and the ID included in the return signal is received. When the code is output from the receiver 15, it is determined whether or not the ID code is the same as the registered ID code.

  If the smart authentication is successful in this smart authentication process, that is, if it is determined that the ID code in the return signal received from the portable device 3 is the same as the registered ID code (S120: YES), it will be described later. The determination reference value used when determining whether or not the face represented by the image data from the sensor 5 in the biometric authentication process of S130 is the face represented by the registered face data (that is, the face of a regular user) is used as the sensor 5. Is set to a value that is easy to determine that the face represented by the image data is the face represented by the registered face data (that is, a value that facilitates biometric authentication) (S125), and then proceeds to S130 to perform biometric authentication processing. To implement.

  If smart authentication is not successful in the smart authentication process, that is, whether the receiver 15 has not received a return signal from the portable device 3 within a specified time even if a transmission request signal is transmitted from the transmitter 13. Alternatively, even if a return signal is received from the portable device 3 by the receiver 15, if it is determined that the ID code included in the return signal is not a registered ID code (S120: NO), the above determination criteria The value is set to a value that makes it difficult to determine that the face represented by the image data from the sensor 5 is the face represented by the registered face data (that is, a value that is difficult to succeed in biometric authentication) (S127), and then proceeds to S130. Conduct biometrics authentication process at

  In the biometric authentication process of S130, when the sensor 5 is activated and image data of a human face is input from the sensor 5 within a predetermined time, the face represented by the image data is registered. It is determined whether or not the face is represented by the face data.

  For example, in this biometrics authentication process, the degree of coincidence between each part of the face represented by the image data from the sensor 5 and each part of the face represented by the registered face data is calculated, and the degree of coincidence of each part is calculated. If the authentication is successful when all the values are greater than or equal to the specified value, the specified value becomes the determination reference value. In S127, the determination reference value as the specified value is set to a value higher than the value set in S125. In other words, in S125, the determination reference value as the specified value is It is set to a value lower than the value set in S127.

  If the authentication is successful in the biometric authentication process of S130, that is, if it is determined that the face represented by the image data input from the sensor 5 is the face represented by the registered face data (S140: YES), the door An unlock permission command is output to the ECU 9 to place the door ECU 9 in an unlock standby state, and a start permission command is output to the engine ECU 11 to place the engine ECU 11 in a start standby state (S150). Thereafter, the entry process is terminated.

  Then, in this case, the user can unlock (unlock) the door by simply touching the touch sensor of the driver's door knob without operating the key, and press the start switch in the vehicle (vehicle interior). Just start the engine.

  On the other hand, if the authentication is not successful within the specified time in the biometric authentication process, that is, even if the sensor 5 is enabled, the human face image data is not input from the sensor 5 within the specified time, or Even if image data of a human face is input, if it is determined that the face represented by the image data is not the face represented by the registered face data (S140: NO), the present entry process is terminated.

  That is, in the control ECU 7 of the first embodiment, smart authentication by wireless communication with the portable device 3 (so-called authentication of the portable device 3) is performed first, and then biometric authentication (to speak, the user's own). However, even if smart authentication is not successful, biometric authentication is performed.

  Then, the determination criterion value for biometric authentication is switched depending on whether or not the smart authentication is successful. When the smart authentication is successful, the determination criterion value is set low so that the biometric authentication is easy to succeed. If it is set (S125) and the smart authentication is not successful, the determination reference value is set high so that it is difficult to succeed in the biometric authentication (S127).

  According to the first embodiment as described above, it is possible to prevent erroneous determination that the biometric authentication is not successful even though the sensor 5 has photographed the face of a regular user registered in advance (that is, a good authentication success rate). ) And high security.

  That is, when the authorized user has the authorized portable device 3, smart authentication succeeds, and the determination reference value is set to a value that facilitates biometric authentication. Generation | occurrence | production can be prevented and a high authentication success rate (recognition rate) can be ensured. On the other hand, when there is no legitimate portable device 3 in the wireless communication area where the transmission request signal is transmitted from the transmitter 13, the smart authentication is not successful and the determination reference value is difficult to succeed in the biometric authentication. Since it is set to a value, high security is ensured.

  In particular, in this embodiment, face authentication is performed as biometric authentication. In face authentication, the face itself such as hairstyle and wrinkles at that time is used based on the shooting conditions such as angle and light intensity when photographing the face. Changes affect authentication. Therefore, in order to avoid the misjudgment, simply setting the criterion value to a value that facilitates successful authentication, conversely, the face of a third party who is not a legitimate user is reversed. Although the possibility of misjudgment as a face is increased and security is lowered, according to the first embodiment, such a problem can be solved, and high security by face authentication is achieved. It is possible to achieve both prevention of erroneous determination.

  In the smart authentication process in S110, a polling method is used in which a transmission request signal is transmitted from the transmitter 13 at regular intervals, and the receiver 15 waits until a return signal from the portable device 3 is received. For example, the transmission request signal may be transmitted from the transmitter 13 each time the trigger switch 17 is pressed. Further, in the biometric authentication process of S130, when the trigger switch 17 is pressed, the sensor 5 may be enabled and image data may be captured from the sensor 5. In this case, if the user turns his face toward the sensor 5 and presses the trigger switch 17, biometric authentication is performed.

On the other hand, the above embodiment embodies the invention of claim 1, wherein the process of S110 corresponds to the process as the smart authentication means, and the process of S130 corresponds to the process as the biometrics authentication means. ing. And the process of S150 is equivalent to the process as a control means. Further, the processing of S125 and S127 corresponds to processing as a determination reference value changing unit.
[Second Embodiment]
Next, a smart entry system according to the second embodiment will be described. Since the smart entry system of the second embodiment has the same hardware configuration as the smart entry system of the first embodiment, in the following description, the reference numerals of the respective constituent elements are the same as those of the first embodiment. Use.

In the smart entry system 1 of the second embodiment, as compared with the first embodiment, the control ECU 7 executes the entry process of FIG. 3 instead of the entry process of FIG.
Hereinafter, the entry process will be described with reference to the flowchart of FIG.

  In the smart entry system 1 according to the second embodiment, the control ECU 7 confirms that all the doors are locked after the vehicle is parked. Execute.

When the control ECU 7 starts entry processing, first, high-precision smart authentication processing is performed (S210).
In the smart authentication process of S210, first, a transmission request signal for high-precision authentication is transmitted from the transmitter 13.

  In this embodiment, when the portable device 3 receives the transmission request signal for high accuracy authentication transmitted from the transmitter 13, all the bits of the ID code stored in the memory 33 are converted into the ID code for high accuracy authentication. A return signal for high-accuracy authentication included (corresponding to identification information) is transmitted. In addition, when the portable device 3 receives a transmission request signal for low-precision authentication transmitted from the transmitter 13 by a smart authentication process in S225 described later, a part of the ID code stored in the memory 33 (this embodiment) Then, for example, a low-accuracy authentication return signal including a half-accuracy authentication ID code (corresponding to identification information) is transmitted.

  Therefore, in the smart authentication process of S210, the receiver 15 receives the return signal for high-precision authentication from the portable device 3, and the ID code for high-precision authentication included in the return signal is output from the receiver 15. Then, it is determined whether or not the high-precision authentication ID code is the same as all bits of the registration ID code.

  If authentication is successful in this smart authentication process, that is, if it is determined that the high-accuracy authentication ID code from the portable device 3 is the same as all bits of the registered ID code (S215: YES), the trigger switch 17 It is determined whether or not is pressed within a certain time (S220). If the trigger switch 17 is not pressed within a certain time (S220: NO), the entry process is terminated as it is, but if the trigger switch 17 is pressed within a certain time (S220: YES), low accuracy is achieved. The biometrics authentication process is performed (S225).

  Here, as described above, in the biometrics authentication process, the sensor 5 is enabled, the human face image data is captured from the sensor 5, the face parts represented by the image data, and the registered face data The degree of coincidence with each part of the face to be represented is calculated, and if the degree of coincidence of each part is equal to or greater than the specified value, it is determined that the face represented by the image data from the sensor 5 is the face represented by the registered face data. Although successful, the low-accuracy biometrics authentication process performed in S225 has a smaller number of face parts (that is, the number of images to be compared) for calculating the degree of matching compared to the biometrics authentication process in S245 described later. For example, the amount is set to half, and the amount of image data used for authentication is almost halved.

  If the authentication is successful in the biometric authentication process in S225 (S230: YES), an unlock permission command is output to the door ECU 9 to place the door ECU 9 in an unlock standby state, and a start permission command is issued to the engine ECU 11. The engine ECU 11 is output to put the engine ECU 11 into a start standby state (S235). Thereafter, the entry process is terminated.

  Then, in this case, the user can unlock the door (unlock) by touching the touch sensor of the driver's door knob without operating the key, and the engine can be turned on simply by pressing the start switch in the vehicle. Can be started.

  If the authentication is not successful in the biometric authentication process of S225, that is, the human face image data is not input from the sensor 5 within the specified time even if the sensor 5 is enabled, or Even if face image data is input, if it is determined that the face represented by the image data is not the face represented by the registered face data (S230: NO), the present entry process is terminated.

  On the other hand, if the authentication is not successful in the smart authentication process of S210, that is, even if the transmission request signal is transmitted from the transmitter 13, the receiver 15 receives the return signal from the portable device 3 within the specified time. If it is determined that the ID code included in the return signal is not the same as all the bits of the registered ID code even if the receiver 15 receives the return signal from the portable device 3 (S215). : NO), the process proceeds to S240, and it is determined whether or not the trigger switch 17 is pressed within a predetermined time.

  If the trigger switch 17 is not pressed within a certain time (S240: NO), this entry process is terminated. If the trigger switch 17 is pressed within a certain time (S240: YES), high accuracy is achieved. The biometrics authentication process is executed (S245).

  As described above, in the high-precision biometrics authentication process performed in S245, compared to the biometrics authentication process in S225, the number of face parts (number of images to be collated) for calculating the degree of coincidence is large. It is set to double.

  If the authentication is not successful in the biometric authentication process of S245 (S250: NO), this entry process is terminated as it is, but if the authentication is successful in the biometric authentication process of S245 (S250: YES) ), The process proceeds to S255, and smart authentication processing with low accuracy is performed.

In the smart authentication process of S255, first, a transmission request signal for low-precision authentication is transmitted from the transmitter 13.
As described above, when the portable device 3 receives the transmission request signal for low-precision authentication, the portable device 3 includes the low-precision authentication ID code consisting of half the bits from the head of the ID code stored in the memory 33. In order to transmit the return signal for low precision authentication, in the smart authentication process of S255, the return signal from the portable device 3 is received by the receiver 15, and the ID code for low precision authentication included in the return signal is received. Is output from the receiver 15, it is determined whether or not the low-accuracy authentication ID code is the same as a half bit from the top of the registration ID code.

  If authentication is successful in the smart authentication process of S255, that is, if it is determined that the low-precision authentication ID code from the portable device 3 is the same as the half bit from the top of the registration ID code (S260: YES) ), The process proceeds to S235, and an unlock permission command is output to the door ECU 9 and a start permission command is output to the engine ECU 11. Thereafter, the entry process is terminated.

  The user can then release the door lock (unlock) by touching the touch sensor on the driver's door knob without operating the key, and the engine can be started simply by pressing the start switch in the car. Can do.

  Further, if the authentication is not successful in the smart authentication process of S255, that is, even if the transmission request signal is transmitted from the transmitter 13, the receiver 15 receives the return signal from the portable device 3 within the specified time. If it is determined that the ID code included in the return signal is not the same as the first half of the registration ID code even if the receiver 15 receives the return signal from the portable device 3. If this is the case (S260: NO), this entry process is terminated.

  If this entry process is terminated as it is from any one of S220, S230, S240, S250, and S260, if the authentication execution condition is satisfied, the process is executed again from S210.

  On the other hand, the second embodiment embodies the invention of claim 3, wherein the process of S210 corresponds to the first smart authentication means, and the process of S255 corresponds to the second smart authentication means. Yes. The process in S225 corresponds to the first biometric authentication unit, and the process in S245 corresponds to the second biometric authentication unit. Further, the process of S235 corresponds to specific vehicle control.

  In the second embodiment as described above, authentication is successful in the smart authentication process of S210 (S215: YES), and further authentication is successful in the biometric authentication process of S225 (S230: YES), or the smart authentication process of S210 If the authentication is not successful (S215: NO), the authentication is successful in the biometrics authentication process of S245 (S250: YES), and if the authentication is successful in the smart authentication process of S255 (S260: YES), The process of S235 is performed.

  That is, the smart authentication process and the biometric authentication are performed both when the authentication is successful in the smart authentication process of S210 (S215: YES) and when the authentication is not successful in the smart authentication process of S210 (S215: NO). The process of S235 is performed only after successful two authentications with the process. Therefore, high security can be ensured, and even if an action called a relay team attack is performed, it is possible to prevent the door unlocking and engine starting from being performed illegally.

  In addition, in the smart authentication process in S255, low-precision authentication in which the data length of the ID code is shorter than that in the smart authentication process in S210 is performed. Low-accuracy authentication is performed with a small number of images.

  For this reason, high security is ensured both when authentication is successful in the smart authentication process of S210 (S215: YES) and when authentication is not successful in the smart authentication process of S210 (S215: NO). However, it is possible to suppress an increase in the time required for successful authentication (in other words, a decrease in responsiveness). The less accurate the authentication, the less time and information processing required to acquire the information for authentication (ID code or face image data from the portable device 3), and the time required for successful authentication. This is because it becomes shorter.

Therefore, according to the second embodiment, the security and convenience of the smart entry system can be achieved at a high level.
[Third Embodiment]
Next, a smart entry system according to the third embodiment will be described. Since the smart entry system of the third embodiment has the same hardware configuration as the smart entry system of the first embodiment, in the following description, the reference numerals of the respective components are the same as those of the first embodiment. Use.

In the smart entry system 1 of the third embodiment, as compared with the second embodiment, the control ECU 7 executes the entry process of FIG. 4 instead of the entry process of FIG.
Hereinafter, this entry process will be described with reference to the flowchart of FIG.

  In the smart entry system 1 of the third embodiment, when the control ECU 7 confirms that all the doors are locked after the vehicle is parked, the control ECU 7 executes the entry process of FIG.

  Then, when the control ECU 7 starts the entry process, it is determined whether or not the trigger switch 17 is pressed (S310), and waits until the trigger switch 17 is pressed. When the trigger switch 17 is pressed (S310: YES), it is determined that the authentication execution condition is satisfied, and the process proceeds to S315, and the same highly accurate biometric authentication process as that of S245 in FIG. 3 is performed.

If the authentication is successful in the biometric authentication process of S315 (S320: YES), the process proceeds to S325, and the same low-accuracy smart authentication process as S255 of FIG. 3 is performed.
If the authentication is successful in the smart authentication process of S325 (S330: YES), the process proceeds to S335, an unlock permission command is output to the door ECU 9, the door ECU 9 is set to the unlock standby state, and the engine A start permission command is output to the ECU 11 to place the engine ECU 11 in a start standby state. Thereafter, the entry process is terminated.

  In this case, the user can unlock the door only by touching the touch sensor of the driver's door knob without operating the key, and can start the engine only by pressing the start switch in the vehicle. it can.

If the authentication is not successful in the smart authentication process of S325 (S330: NO), the entry process is terminated as it is.
On the other hand, if the authentication is not successful in the biometric authentication process of S315 (S320: NO), the process proceeds to S340, and the same high-accuracy smart authentication process as S210 of FIG. 3 is performed.

  If the authentication is not successful in the smart authentication process of S340 (S345: NO), the entry process is terminated as it is, but if the authentication is successful in the smart authentication process of S340 (S345: YES), the process proceeds to S350. Then, it is determined whether or not the trigger switch 17 is pressed within a certain time.

  If the trigger switch 17 is not pressed within a predetermined time (S350: NO), this entry process is terminated. If the trigger switch 17 is pressed within a predetermined time (S350: YES), the process proceeds to S355. Going forward, the same low-precision biometrics authentication process as in S225 of FIG. 3 is performed.

  If the biometrics authentication process of S355 succeeds in the authentication (S360: YES), the process proceeds to S335, and an unlock permission command is output to the door ECU 9 and a start permission command is output to the engine ECU 11. Thereafter, the entry process is terminated.

  Then, the user can unlock the door only by touching the touch sensor of the driver's door knob without operating the key, and can start the engine only by pressing the start switch in the vehicle.

If the authentication is not successful in the biometric authentication process of S355 (S360: NO), the entry process is terminated as it is.
If the entry process is terminated as is from any of S330, S345, S350, and S360, if the vehicle is parked and all the doors are locked, the process is executed again from S310. Become.

  On the other hand, the third embodiment embodies the invention of claim 5, wherein the process of S 315 corresponds to the first biometric authentication means, and the process of S 355 corresponds to the second biometric authentication means. is doing. The process of S325 corresponds to the first smart authentication unit, and the process of S340 corresponds to the second smart authentication unit. Further, the process of S335 corresponds to specific vehicle control.

  In the third embodiment as described above, the authentication is successful in the biometric authentication process of S315 (S320: YES), and the authentication is successful in the smart authentication process of S325 (S330: YES), or the biometric authentication of S315 If the authentication is not successful in the process (S320: NO), the authentication is successful in the smart authentication process in S340 (S345: YES), and the authentication is successful in the biometric authentication process in S355 (S360: YES). , S335 is performed.

  In the biometrics authentication process in S355, low-precision authentication is performed with fewer verification parts (number of verification images) than in the biometrics authentication process in S315. Low-precision authentication is performed with a short data length.

That is, in the third embodiment, the order of performing the biometric authentication process and the smart authentication process is reversed as compared with the second embodiment.
For this reason, there are two types of cases, both when authentication is successful in the biometric authentication process of S315 (S320: YES) and when authentication is not successful in the biometric authentication process of S315 (S320: NO). It is possible to exhibit high security due to the necessity of successful authentication, and it is possible to suppress an increase in the time required for successful authentication. Therefore, according to the third embodiment, as in the second embodiment, the security and convenience of the smart entry system can be achieved at a high level.
[Fourth Embodiment]
Next, a smart entry system according to the fourth embodiment will be described.

  As shown in FIG. 5, the smart entry system 2 of the fourth embodiment is compared with the smart entry system 1 (FIG. 1) of the first embodiment in terms of hardware, the biometric authentication sensor 6 and the transmitter 14. And a trigger switch 18 are additionally provided.

  The sensor 6 is a camera similar to the sensor 5, but is installed so as to photograph the face of a person sitting in the driver's seat in the vehicle (vehicle interior). Then, image data captured by the sensor 6 is taken into the control ECU 7.

  Similar to the transmitter 13, the transmitter 14 transmits a transmission request signal in response to a command from the control ECU 7. The transmitter 14 is provided in the vehicle and transmits a transmission request signal to a wireless communication area around the driver's seat.

  The trigger switch 18 is a switch for giving a trigger for starting biometrics authentication to the control ECU 7, similarly to the trigger switch 17. However, the trigger switch 18 can be easily reached by a person sitting in the driver's seat inside the vehicle, not outside the vehicle. In the position.

  Similarly to the second and third embodiments, when the portable device 3 receives a transmission request signal for high-precision authentication from the vehicle side, the high-precision authentication of all bits of the ID code stored in the memory 33 is performed. When a return signal for high-accuracy authentication included as an ID code is transmitted and a transmission request signal for low-accuracy authentication is received from the vehicle side, a part of the ID code stored in the memory 33 (in this embodiment, (For example, a half bit from the head) is transmitted as a low precision authentication return signal including the low precision authentication ID code.

  Next, in the smart entry system 2 of the fourth embodiment, compared with the first embodiment, the control ECU 7 replaces the entry process of FIG. 2 with the first entry process shown in FIG. The second entry process shown in 6 (b) is executed. The first entry process in FIG. 6A is a process for permitting unlocking of the door when the user is outside the vehicle, and the second entry process in FIG. This is a process for permitting the start of the engine when boarding the vehicle.

Hereinafter, these processes will be described with reference to the flowchart of FIG.
When the control ECU 7 confirms that all the doors are locked after the vehicle is parked, it is assumed that an unlock permission authentication execution condition (corresponding to the first authentication execution condition) is satisfied, as shown in FIG. The first entry process of a) is executed.

When the control ECU 7 starts the first entry process, first, in S410, the same high-precision smart authentication process as that of S210 in FIG. 3 is performed.
That is, in the smart authentication process of S410, first, a transmission request signal for high-precision authentication is transmitted from the transmitter 13. When the receiver 15 receives the return signal for high accuracy authentication from the portable device 3 and the ID code for high accuracy authentication included in the return signal is output from the receiver 15, the high accuracy authentication is performed. It is determined whether or not the authentication ID code is the same as all bits of the registration ID code.

  If the authentication is successful in the smart authentication process in S410 (S420: YES), the process proceeds to S430, and it is determined whether or not the trigger switch 17 outside the vehicle is pressed within a certain time. If the trigger switch 17 is pressed within a predetermined time (S430: YES), the process proceeds to S440, and low-precision biometric authentication processing is performed.

  In the biometrics authentication process in S440, as described above, the sensor 5 is enabled, the human face image data is taken from the sensor 5, the face parts represented by the image data, and the registered face The degree of coincidence with each part of the face represented by the data is calculated, and the authentication is successful when the degree of coincidence of each part is equal to or greater than the specified value, but this is compared with the biometric authentication process of S510 in FIG. Then, the number of face parts for which the degree of coincidence is calculated (the number of collation images) is set to be small, for example, half, so that the amount of image data used for authentication is almost halved.

  If the authentication is successful in the biometric authentication process in S440 (S450: YES), the process proceeds to S460, where an unlock permission command is output to the door ECU 9 to place the door ECU 9 in an unlock standby state. One entry processing is terminated.

Then, a user outside the vehicle can unlock the door only by touching the touch sensor of the driver's door knob without performing key operations.
If the authentication is not successful in the smart authentication process in S410 (S420: NO), or if it is determined in S430 that the trigger switch 17 is not pressed within a certain time (S430: NO), or If the authentication is not successful in the biometric authentication process of S440 (S450: NO), the first entry process is terminated as it is. In these cases, if the above-described unlock permission authentication execution condition is satisfied, the process is executed again from S410.

  Next, when the control ECU 7 detects that the trigger switch 18 in the vehicle has been pressed, it is determined that the start permission authentication execution condition (corresponding to the second authentication execution condition) is satisfied, and the second of FIG. Execute entry processing.

When the control ECU 7 starts the second entry process, first, in S510, a highly accurate biometric authentication process is performed.
In the biometrics authentication process in S510, the sensor 6 is enabled to capture the face of a person sitting in the driver's seat, image data is captured from the sensor 6, and each part of the face represented by the image data Then, the degree of coincidence with each part of the face represented by the registered face data is calculated, and the authentication is successful when the degree of coincidence of each part is not less than the specified value. As described above, as shown in FIG. Compared with the biometrics authentication process, the number of face parts for which the degree of coincidence is calculated (the number of images to be collated) is large and set to, for example, twice.

  If the authentication is successful in the biometric authentication process of S510 (S520: YES), the process proceeds to S530, and the transmitter 14 is controlled to perform the low-accuracy smart authentication process similar to S255 of FIG.

  That is, in the smart authentication process of S530, first, a transmission request signal for low-accuracy authentication is transmitted from the transmitter 14 to the wireless communication area around the driver's seat. When the receiver 15 receives the return signal for low precision authentication from the portable device 3 and the low precision authentication ID code included in the return signal is output from the receiver 15, the low precision authentication is performed. It is determined whether or not the authentication ID code is the same as the half bit from the beginning of the registration ID code.

  If the authentication succeeds in the smart authentication process of S530 (S540: YES), the process proceeds to S550, outputs a start permission command to the engine ECU 11, puts the engine ECU 11 into a start standby state, and then ends this entry process. To do.

Then, the user can start the engine only by pressing the start switch in the vehicle.
Further, if the authentication is not successful in the biometric authentication process of S510 (S520: NO), or if the authentication is not successful in the smart authentication process of S530 (S540: NO), the present process is continued. The two entry process is terminated. In those cases, if the trigger switch 18 in the vehicle is pressed again, the processing is executed again from S510.

  The fourth embodiment embodies the invention of claim 7, wherein the process of S410 corresponds to the first smart authentication means, and the process of S530 corresponds to the second smart authentication means. Yes. The process of S440 corresponds to the first biometric authentication unit, and the process of S510 corresponds to the second biometric authentication unit. Each process of S460 and S550 corresponds to vehicle control.

  According to the fourth embodiment as described above, the unlocking authentication execution condition is satisfied and the first entry process of FIG. 6A is executed, and the start permission authentication execution condition is satisfied. In any case where the second entry process of FIG. 6B is executed, the door unlocking and engine starting are not performed until the two authentications of the smart authentication process and the biometrics authentication process are successful. Will be allowed. Therefore, high security can be ensured.

  In addition, the smart authentication process (S530) to be executed later in the second entry process performs authentication with a lower accuracy than the smart authentication process (S410) to be executed earlier in the first entry process. In the biometric authentication process (S440) to be executed later, authentication is performed with lower accuracy than the biometric authentication process (S510) to be executed first in the second entry process.

  For this reason, in either case where the first entry process or the second entry process is executed, it is possible to prevent an increase in the time required for successful authentication while ensuring high security. it can. Also according to the fourth embodiment, the security and convenience of the smart entry system can be achieved at a high level.

  Note that in the fourth embodiment, vehicle control with different contents of door unlock permission and engine start permission is performed in the first entry process of FIG. 6A and the second entry process of FIG. 6B. However, it may be configured to perform vehicle control of the same content in each process.

  As an example, in S460 of FIG. 6 (a), similarly to S550 of FIG. 6 (b), if the engine is allowed to start, a normal user gets on board by the processing of FIG. 6 (a). The start of the engine is permitted immediately before, and the user can get on and start the engine immediately. Further, in the case of this configuration, for example, even if the user wears a mask, sunglasses, or the like outside the vehicle, the process of FIG. If the user removes the mask and sunglasses after getting on, the authentication is successful in the process of FIG. 6B and the engine is permitted to start.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to such Embodiment at all, Of course, in the range which does not deviate from the summary of this invention, it can implement in a various aspect. .

  For example, in each of the above embodiments, face authentication is performed as biometric authentication. However, the present invention is not limited to this, and authentication using fingerprints, irises, voiceprints, veins, or the like may be used.

It is a block diagram which shows the structure of the smart entry system of 1st Embodiment. It is a flowchart which shows the content of the entry process which control ECU of 1st Embodiment performs. It is a flowchart which shows the content of the entry process which control ECU of 2nd Embodiment performs. It is a flowchart which shows the content of the entry process which control ECU of 3rd Embodiment performs. It is a block diagram which shows the structure of the smart entry system of 4th Embodiment. It is a flowchart which shows the content of the entry process which control ECU of 4th Embodiment performs.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1, 2 ... Smart entry system, 3 ... Portable machine, 5, 6 ... Biometrics authentication sensor, 7 ... Control ECU, 9 ... Door ECU, 11 ... Engine ECU, 13, 14 ... Transmitter, 15 ... Receiver, 17, 18 ... trigger switch, 31 ... transceiver, 33 ... memory

Claims (8)

A transmitter for transmitting a transmission request signal in a predetermined range;
A receiver for receiving a return signal transmitted by the portable device possessed by the user by receiving the transmission request signal;
When transmitting the transmission request signal from the transmitter and receiving the return signal by the receiver, it is determined whether or not the identification information included in the return signal is pre-registered identification information. Smart authentication means for performing authentication by determining,
Control means for performing specific vehicle control;
An in-vehicle device for a smart entry system comprising:
Detection means for detecting the biological information of the user;
Biometrics authentication means for performing authentication by determining whether or not the biometric information detected by the detection means is biometric information of a regular user registered in advance,
When a predetermined authentication execution condition is satisfied, the smart authentication unit is activated, and then the biometrics authentication unit is activated, and when the biometrics authentication unit is successfully authenticated, the control unit is To implement control,
Further, the smart authentication means uses the determination reference value used when the biometrics authentication means performs authentication as compared with the case where the smart authentication means succeeds in the authentication according to the authentication result of the smart authentication means. A determination reference value changing unit is provided for changing the biometric information detected by the detection unit so that it is difficult to determine that the biometric information detected by the detection unit is pre-registered biometric information in advance. thing,
An in-vehicle device for a smart entry system characterized by The in-vehicle device for a smart entry system according to claim 1,
The detection means images a human face as the biological information,
The biometrics authentication means performs authentication by determining whether or not the face photographed by the detection means is a face of a regular user registered in advance,
An in-vehicle device for a smart entry system characterized by When a transmission request signal is transmitted to a predetermined range, and a portable device possessed by the user receives a transmission signal transmitted by receiving the transmission request signal, it is included in the received transmission signal. First and second smart authentication means for performing authentication by determining whether the identification information is identification information registered in advance;
First and second biometric authentication means for detecting human biometric information and performing authentication by determining whether the detected biometric information is biometric information of a regular user registered in advance. And with
When the predetermined authentication execution condition is satisfied, the first smart authentication means is activated, and when the first smart authentication means is successfully authenticated, the first biometric authentication means is activated, and the first smart authentication means is activated. When one biometric authentication means succeeds in authentication, a specific vehicle control is performed. When the first smart authentication means does not succeed in authentication, the second biometric authentication means operates, When the second biometrics authentication unit succeeds in authentication, the second smart authentication unit operates, and when the second smart authentication unit succeeds in authentication, the specific vehicle control is performed. And
Further, the second smart authentication means performs authentication with a lower accuracy than the first smart authentication means, and the first biometric authentication means has a lower accuracy than the second biometric authentication means. Authenticating,
An in-vehicle device for a smart entry system characterized by The in-vehicle device for a smart entry system according to claim 3,
The amount of identification information used by the second smart authentication means for authentication is smaller than the amount of identification information used by the first smart authentication means,
The amount of biometric data used by the first biometric authentication means for authentication is smaller than the amount of biometric data used by the second biometric authentication means;
An in-vehicle device for a smart entry system characterized by When a transmission request signal is transmitted to a predetermined range, and a portable device possessed by the user receives a transmission signal transmitted by receiving the transmission request signal, it is included in the received transmission signal. First and second smart authentication means for performing authentication by determining whether the identification information is identification information registered in advance;
First and second biometric authentication means for detecting human biometric information and performing authentication by determining whether the detected biometric information is biometric information of a regular user registered in advance. And with
When a predetermined authentication execution condition is satisfied, the first biometric authentication means is activated, and when the first biometric authentication means is successfully authenticated, the first smart authentication means is activated, When the first smart authentication means succeeds in authentication, specific vehicle control is performed, and when the first biometric authentication means does not succeed in authentication, the second smart authentication means operates, When the second smart authentication means succeeds in authentication, the second biometric authentication means operates, and when the second biometric authentication means succeeds in authentication, the specific vehicle control is performed. Configured,
Further, the second biometric authentication means performs authentication with a lower accuracy than the first biometric authentication means, and the first smart authentication means has a lower accuracy than the second smart authentication means. Authenticating,
An in-vehicle device for a smart entry system characterized by The in-vehicle device for smart entry system according to claim 5,
The amount of biometric information data used for authentication by the second biometric authentication means is smaller than the amount of biometric information data used by the first biometric authentication means,
The data amount of the identification information used for authentication by the first smart authentication means is smaller than the data amount of the identification information used by the second smart authentication means;
An in-vehicle device for a smart entry system characterized by When a transmission request signal is transmitted to a predetermined range, and a portable device possessed by the user receives a transmission signal transmitted by receiving the transmission request signal, it is included in the received transmission signal. First and second smart authentication means for performing authentication by determining whether the identification information is identification information registered in advance;
First and second biometric authentication means for detecting human biometric information and performing authentication by determining whether the detected biometric information is biometric information of a regular user registered in advance. And with
When the predetermined first authentication execution condition is satisfied, the first smart authentication unit is activated, and when the first smart authentication unit is successfully authenticated, the first biometric authentication unit is activated. , When the first biometric authentication means succeeds in authentication, the specific vehicle control is performed,
When the predetermined second authentication execution condition is satisfied, the second biometric authentication means is activated, and when the second biometric authentication means is successfully authenticated, the second smart authentication means is activated. When the second smart authentication means succeeds in the authentication, the specific vehicle control or the vehicle control different from the specific vehicle control is performed,
Further, the second smart authentication means performs authentication with a lower accuracy than the first smart authentication means, and the first biometric authentication means has a lower accuracy than the second biometric authentication means. Authenticating,
An in-vehicle device for a smart entry system characterized by The in-vehicle device for smart entry system according to claim 7,
The amount of identification information used by the second smart authentication means for authentication is smaller than the amount of identification information used by the first smart authentication means,
The amount of biometric data used by the first biometric authentication means for authentication is smaller than the amount of biometric data used by the second biometric authentication means;
An in-vehicle device for a smart entry system characterized by

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