JP2010168009A - Electronic key system and vehicle control portable machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic key system and a vehicle control portable machine capable of connecting Bluetooth communication for communication between a vehicle side device and the vehicle control portable machine, without impairing convenience, while reducing electric power consumption. <P>SOLUTION: When predetermined operation for starting an on-vehicle engine is performed to the vehicle side device 100, code collation of the portable machine 200 is performed by using radiocommunication between the vehicle side device 100 and the portable machine 200. When this code collation is realized, the vehicle side device 100 starts operation of the on-vehicle engine, and a connection request is transmitted from an LF transmission part 102, and while trying BT communication connection between the portable machine 200 and itself, the portable machine 200 tries the BT communication connection between the vehicle side device 100 and itself when receiving the connection request by an LF receiving part 202. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electronic key system for controlling a vehicle by using wireless communication between a portable device for vehicle control carried by a user and a vehicle side device mounted on the vehicle, and a vehicle constituting the electronic key system. The present invention relates to a portable control device.

  2. Description of the Related Art Conventionally, a hands-free telephone device (vehicle-side device) that performs Bluetooth (registered trademark) communication with a mobile phone that is a terminal device that is carried by a user and is connected to a public line as in the technique described in Patent Document 1, for example. )It has been known. Thus, the user can make a call on the mobile phone via the Bluetooth communication between the hands-free phone device and the mobile phone while directly using the hands-free phone device.

  Conventionally, an electronic key having a so-called smart entry function that executes control such as unlocking of a vehicle door when a vehicle control portable device (hereinafter also simply referred to as a portable device) enters a wireless communication area around the vehicle. Systems and portable devices are known. As a result, the user can control the unlocking of the vehicle door while keeping it in a pocket or the like without taking out the portable device.

JP 2008-153976 A

  Incidentally, in recent years, there has been a demand for higher functionality of portable devices such as, for example, mounting a Bluetooth communication function in a portable device. Thereby, it becomes possible to transmit the information regarding a vehicle from a vehicle side apparatus to a portable machine by Bluetooth communication.

  However, if the former prior art is directly applied to the latter prior art, the following problems may occur. Specifically, in the former prior art, when trying to perform Bluetooth communication between the hands-free phone device and the mobile phone, the Bluetooth communication units of the hands-free phone device and the mobile phone are always connected for communication. Alternatively, when the user operates immediately before using the hands-free telephone device, the Bluetooth communication units of the hands-free telephone device and the mobile phone are connected for communication.

  Then, since each Bluetooth communication unit is always connected for communication, useless power is consumed. In addition, it is troublesome for the user that the user connects each Bluetooth communication unit immediately before using the vehicle-side device, and the vehicle can be controlled while being placed in a pocket or the like without taking out the portable device. The above convenience will be impaired.

  The present invention has been made in view of such circumstances, and the object thereof is to reduce Bluetooth power consumption between the vehicle-side device and the vehicle control portable device without reducing power consumption and convenience. An object of the present invention is to provide an electronic key system and a portable device for vehicle control that can be connected for communication.

  In order to achieve such an object, according to the first aspect of the present invention, the vehicle is controlled using wireless communication between a vehicle control portable device carried by a user and a vehicle side device mounted on the vehicle. In the electronic key system, the portable device for vehicle control includes a vehicle-side first communication unit that transmits and receives information to and from the vehicle-side device according to a communication protocol based on Bluetooth, and the portable device-side first communication. A portable device side second communication unit that transmits and receives information to and from the vehicle side device according to a communication protocol different from the unit, and the portable device side first communication unit transmits and receives information to and from the vehicle side device. A vehicle-side control unit that performs communication connection by the portable device-side first communication unit based on reception of the requested connection request by the portable device-side second communication unit; The apparatus includes a vehicle-side first communication unit that transmits and receives information to and from the vehicle control portable device according to a communication protocol based on a Bluetooth method, and the vehicle control portable device according to a communication protocol different from the vehicle-side first communication unit. A vehicle-side second communication unit that transmits and receives information to and from the aircraft, and a predetermined operation for controlling the vehicle and controlling the vehicle based on information received by the vehicle-side second communication unit A vehicle-side control unit that transmits the connection request from the vehicle-side second communication unit and performs communication connection by the vehicle-side first communication unit, based on what is performed on the vehicle-side device. It is characterized by.

  In the above configuration as an electronic key system, the vehicle-side control unit transmits the connection request from the vehicle-side second communication unit based on a predetermined operation for controlling the vehicle being performed on the vehicle-side device. And the communication connection by the vehicle side 1st communication part is performed. On the other hand, the portable device control unit performs communication connection by the portable device side first communication unit based on the reception of the connection request by the portable device side second communication unit. When the connection ends and communication is established, Bluetooth communication is started between the vehicle side device and the vehicle control portable device. Thus, in performing communication according to the communication protocol based on the Bluetooth system between the vehicle control portable device and the vehicle side device, only a predetermined operation for controlling the vehicle is performed on the vehicle side device. Since it is not necessary to perform a new special operation, the convenience of the vehicle control portable device is not impaired. In addition, since it is not necessary to always connect the first communication unit on the portable device side for communication, it is possible to reduce the power consumption of the portable device for vehicle control.

  In the configuration according to claim 1, in the invention according to claim 2, the vehicle-side device is configured to perform the predetermined operation on the vehicle-side device based on the vehicle control portable device. Code verification is performed, and after the code verification is performed, the connection request is transmitted from the second communication unit on the vehicle side. Thus, after code verification is performed between the vehicle-side device and the vehicle control portable device, communication is performed between the vehicle control portable device and the vehicle-side device in accordance with a communication protocol based on the Bluetooth method. It comes to be. In addition, since it is not necessary to significantly change the existing electronic key system and the vehicle control portable device for code verification, it is easy to introduce.

  In order to achieve the above object, according to the third aspect of the present invention, the result of code verification using wireless communication between the vehicle control portable device carried by the user and the vehicle side device mounted on the vehicle. Accordingly, an electronic key system for controlling the vehicle, wherein the portable device for vehicle control includes a vehicle-side first communication unit that transmits and receives information to and from the vehicle-side device according to a communication protocol based on the Bluetooth method. The portable device side second communication unit transmits and receives information to and from the vehicle side device according to a communication protocol different from that of the portable device side first communication unit, and the portable device side second between the vehicle side device and the portable device side second communication unit. A mobile unit side control unit that performs communication verification by the mobile device side first communication unit after performing code verification by the communication unit, and after performing the code verification, the vehicle side device includes Bluetooth a vehicle-side first communication unit that transmits and receives information to and from the vehicle control portable device according to a communication protocol based on the th method, and the vehicle control portable device according to a communication protocol different from the vehicle-side first communication unit. A vehicle-side second communication unit that transmits / receives information between the vehicle and the vehicle-side second communication unit to control the vehicle, and a predetermined operation for controlling the vehicle is performed by the vehicle Based on what is performed on the side device, the vehicle side second communication unit performs code collation with the vehicle control portable device, and after performing this code collation, the vehicle side first communication unit The vehicle side control part which performs the communication connection by is provided.

  In the above-described configuration as the electronic key system, the vehicle-side control unit performs the vehicle-side control with the portable device for vehicle control based on a predetermined operation for controlling the vehicle being performed on the vehicle-side device. 2 After performing code verification by the communication unit and performing this code verification, communication connection by the vehicle-side first communication unit is performed. On the other hand, the portable device control unit performs code verification by the portable device side second communication unit with the vehicle side device based on the reception of the connection request by the portable device side second communication unit. Then, communication connection is performed by the first communication unit on the portable device side. When the connection is completed and communication is established, Bluetooth communication is started between the vehicle-side device and the vehicle control portable device. Even in this case, when performing communication according to the communication protocol based on the Bluetooth method between the vehicle control portable device and the vehicle side device, only a predetermined operation for controlling the vehicle is performed on the vehicle side device. Since it is not necessary to perform a new special operation, the convenience of the vehicle control portable device is not impaired. In addition, since it is not necessary to always connect the first communication unit on the portable device side for communication, it is possible to reduce the power consumption of the portable device for vehicle control.

  In order to achieve the above object, according to a fourth aspect of the present invention, there is provided a vehicle control device for controlling the vehicle using wireless communication with a vehicle side device carried by the user and mounted on the vehicle. A portable device that is a portable device side first communication unit that transmits and receives information to and from the vehicle side device according to a communication protocol based on a Bluetooth method, and the vehicle according to a communication protocol different from the portable device side first communication unit. A portable device-side second communication unit that transmits / receives information to / from the side device, and a connection request that requests the portable device-side first communication unit to transmit / receive information to / from the vehicle-side device. And a portable device side control unit for performing communication connection by the portable device side first communication unit based on reception by the second communication unit on the side. Thereby, the same operation and effect as the invention of the first aspect can be obtained.

  In order to achieve the above object, according to a fifth aspect of the present invention, in accordance with a result of code verification using wireless communication with a vehicle side device carried by a user and mounted on a vehicle, A portable device for vehicle control that performs control, and a portable device-side first communication unit that transmits and receives information to and from the vehicle-side device according to a communication protocol based on Bluetooth, and the portable device-side first communication unit Code verification is performed by the portable device side second communication unit that transmits and receives information to and from the vehicle side device according to different communication protocols, and the portable device side second communication unit between the vehicle side device and the code verification. And a portable device side control unit for performing communication connection by the portable device side first communication unit. As a result, the same operation and effect as the invention of the third aspect can be obtained.

It is a block diagram which shows the structural example about the vehicle side apparatus which comprises the electronic key system which concerns on this invention. It is a block diagram which shows the structural example about the portable machine for vehicle control which comprises the electronic key system which concerns on this invention. It is a flowchart which shows the process sequence of the collation process performed by the portable machine for vehicle control about 1st Embodiment of an electronic key system. It is a flowchart which shows the process sequence of the collation process performed by the vehicle control portable machine about 2nd Embodiment of an electronic key system.

(First embodiment)
DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of an electronic key system according to the present invention and a vehicle control portable device constituting the electronic key system will be described below with reference to FIGS.

  The electronic key system according to the present embodiment includes a vehicle-side device 100 mounted on a vehicle C and a vehicle control portable device (hereinafter also simply referred to as a portable device) 200 carried by a user. A so-called smart entry function for performing control such as unlocking of the vehicle door when the portable device 200 enters the wireless communication area around the vehicle C, and locking of the vehicle door according to the operation of the switch of the portable device 200 A so-called remote keyless entry function for executing control such as unlocking, and a user carrying the portable device 200 board the vehicle C and operate the vehicle-mounted engine by performing a predetermined operation on the vehicle C (vehicle-side device 100). It has a so-called smart start function to start.

  FIG. 1 is a block diagram illustrating a configuration example of a vehicle-side device 100 that constitutes an electronic key system. With reference to this FIG. 1, the structure and function of the vehicle side apparatus 100 are demonstrated.

  As shown in FIG. 1, the vehicle-side device 100 includes a control unit 101, an LF transmission unit 102, a UHF reception unit 103, an engine switch 106, a door antenna 107, an indoor antenna 108, a backdoor outside antenna 109, and a data logger device 111. And a Bluetooth communication unit (hereinafter referred to as a BT communication unit) 112.

  Among these, the control unit 101 is a known computer including a CPU, a built-in memory (not shown), and the like, and executes various processes according to programs stored in advance in the built-in memory. The control unit 101 corresponds to the vehicle-side control unit described in the claims.

  The LF transmission unit 102 has an LF antenna, and transmits a signal (information) to the portable device 200 via the LF antenna using radio waves in the LF band (for example, “30 to 300 [kHz]”). The signal transmitted from the LF transmitter 102 reaches only within a limited communication area via the door antenna 107, the indoor antenna 108, and the backdoor antenna 109 arranged at four locations of the vehicle C. To do. Further, the UHF receiving unit 103 has a UHF antenna, and receives a signal (information) transmitted from the portable device 200 by using a radio wave in the UHF band (for example, “300 [MHz] to 3 [GHz]”). Receive via UHF antenna. The UHF receiving unit 103 is connected to the control unit 101, and outputs a signal received by the UHF antenna to the control unit 101. The LF transmission unit 102 and the UHF reception unit 103 correspond to the vehicle-side second communication unit described in the claims.

  The engine switch 106 is a push switch for the user to operate to start the operation of a vehicle engine (not shown), and is connected to the control unit 101. When the engine switch 106 is operated by the user, the engine switch 106 outputs an electrical signal indicating that to the control unit 101. Based on this electrical signal, the control unit 101 selects the vehicle C from “IG-ON (start operation of the in-vehicle engine)”, “ACC (accessory)”, and “IG-OFF (stop operation of the in-vehicle engine)”. Control the state. When the engine switch 106 is set to “IG-ON”, the in-vehicle engine starts operating by being controlled by the control unit 101, and various in-vehicle devices including the vehicle-side device 100 are powered from an in-vehicle battery (not shown). Supplied and ready for operation. When the engine switch 106 is set to “ACC” by the user, the on-board engine stops operating by being controlled by the control unit 101, and various on-vehicle devices can operate by being supplied with power from an unillustrated on-board battery. . When the engine switch 106 is set to “IG-OFF” by the user, the control by the control unit 101 causes the in-vehicle engine to stop operating, and various in-vehicle devices are not supplied with power from the in-vehicle battery (not shown). Stop.

  The data logger device 111 is supplied with power from a vehicle-mounted battery while the engine switch 106 is set to the “IG-ON” or the “ACC” by the user. For example, a throttle opening sensor or a vehicle speed sensor (not shown) This is a known device that acquires various types of information relating to the driving state of the vehicle C from various sensors attached to the vehicle C. The data logger device 111 is connected to the control unit 101, and outputs various information from the various sensors to the control unit 101.

  The Bluetooth (hereinafter also referred to as BT) communication unit 112 selects a single device (so-called pairing) and communicates according to a communication protocol based on the Bluetooth method when a large number of communicable devices are in the vicinity. Send and receive information to and from. The BT communication unit 112 includes a BT antenna, and transmits a signal (information) using a radio wave in a predetermined frequency band (“2.4 [GHz]”) to the portable device 200 via the BT antenna. At the same time, a signal (information) transmitted from the portable device 200 using radio waves in this frequency band (“2.4 [GHz]”) is received via the BT antenna. Although the signal transmitted from the BT communication unit 112 has a wider communication area than the signal transmitted from the LF transmission unit 102, the signal transmitted from the UHF transmission unit 203 constituting the portable device 200 described later has a larger communication area. Is not wide. In addition, the BT communication unit 112 is connected to the control unit 101 and transmits a signal output from the control unit 101 (for example, the various information acquired by the data logger device 111) from the BT antenna. A signal received by the BT antenna is output to the control unit 101. In addition, this BT communication part 112 is corresponded to the vehicle side 1st communication part as described in a claim.

  Moreover, in this Embodiment, although the vehicle side apparatus 100 employ | adopted the structure which has the BT communication part 112 single-piece | unit, it is not restricted to this. Some car navigation devices that detect the current position of the device by receiving a GPS signal emitted from a GPS satellite have a BT communication unit. A navigation device having such a BT communication unit may be mounted on the vehicle C, and a signal may be transmitted to and received from the portable device 200 using the BT communication unit of the navigation device.

  FIG. 2 is a block diagram illustrating a configuration example of the portable device 200 configuring the electronic key system. With reference to FIG. 2, the configuration and functions of the portable device 200 will be described.

  As shown in FIG. 2, the portable device 200 includes a control unit 201, an LF reception unit 202, a UHF transmission unit 203, a Bluetooth communication unit (hereinafter referred to as a BT communication unit) 204, a storage unit 205, push switches 206 and 207. And a display 209.

  Among these, the control unit 201 is a known computer having a CPU and a built-in memory (both not shown), and performs various processes according to programs stored in advance in the built-in memory or the storage unit 205 as an external memory. Execute. In addition, when the BT communication unit 204 receives the various information related to the vehicle C, the control unit 201 stores and holds the information in the storage unit 205. The control unit 201 corresponds to the portable device-side control unit described in the claims, and processing executed by the control unit 201 will be described later with reference to FIG.

  The LF reception unit 202 includes an LF antenna, and receives a signal (information) transmitted from the vehicle-side device 100 using an LF band radio wave via the LF antenna. The LF receiving unit 202 is connected to the control unit 201 and outputs a signal received by the LF antenna to the control unit 201. The UHF transmission unit 203 has a UHF antenna, and transmits a signal (information) by radio waves in the UHF band to the vehicle side device 100 via the UHF antenna. The UHF transmission unit 203 is connected to the control unit 201, and transmits a signal output from the control unit 201 from the UHF antenna. The LF reception unit 202 and the UHF transmission unit 203 transmit and receive information to and from the vehicle-side device 100, and correspond to the portable device-side second communication unit described in the claims.

  The BT communication unit 204 transmits and receives information to and from the vehicle side device 100 in accordance with a communication protocol based on the Bluetooth method. The BT communication unit 204 has a BT antenna, and transmits a signal (information) using radio waves in a predetermined frequency band (“2.4 [GHz]”) to the vehicle side device 100 via the BT antenna. At the same time, a signal (information) transmitted from the vehicle-side device 100 using radio waves in this frequency band (“2.4 [GHz]”) is received. The signal transmitted from the BT communication unit 204 is not as wide as the signal transmitted from the UHF transmission unit 203. The BT communication unit 204 is connected to the control unit 201, and transmits a signal output from the control unit 201 from the BT antenna, and outputs a signal received by the BT antenna to the control unit 201. In addition, this BT communication part 204 is corresponded to the portable device side 1st communication part as described in a claim.

  The push switches 206 and 207 are mainly switches for using the remote keyless entry function. When the push switch 206 is operated by one push, the vehicle door is locked. When the push switch 207 is operated by one push, the vehicle door is unlocked. The display 209 is composed of an LCD and an LED, and displays various information.

  Operations of the vehicle-side device 100 and the portable device 200 configured as described above will be described with reference to FIG. In the present embodiment, it is assumed that the vehicle-side device 100 and the portable device 200 are already paired, and the vehicle-side device 100 is configured so that when the engine switch 106 is set to “IG-ON”, the portable device Assume that a connection request for requesting BT communication with 200 is transmitted. FIG. 3 is a flowchart showing the processing procedure of the collation process executed by the portable device 200. This collation process S100 is a BT connection process in addition to the collation process conventionally performed (the process of steps S101 to S109). (Processing of Steps S110 to S113) is newly added.

  Specifically, when the engine switch 106 is set to “IG-ON”, the control unit 101 that configures the vehicle-side device 100 first transmits a wake signal that requests transmission of a response signal from the LF transmission unit 102. Then, it is determined whether or not the wake response signal is received by the UHF receiver 103 within a predetermined time limit. Here, when the wake response signal is not received within the predetermined time limit, the control unit 101 verifies the portable device 200 (and therefore starts the operation of the in-vehicle engine), or performs Bluetooth communication with the portable device 200. There is no attempt to connect. On the other hand, when the wake response signal is received within the predetermined time limit, the control unit 101 transmits a verification request from the LF transmission unit 102 and determines whether or not the verification data is received by the UHF reception unit 103. If the verification data is not received, or if the verification data does not hold even if the verification data is received, the control unit 101 may start the operation of the in-vehicle engine or attempt a Bluetooth communication connection with the portable device 200. Absent. On the other hand, when the verification data is received and verification is established, the in-vehicle engine is started to operate, and a connection request for requesting a Bluetooth communication connection is transmitted from the LF transmission unit 102 to establish a BT communication connection with the portable device 200. Try.

  When a wake signal is received by the LF receiving unit 202 included in the portable device 200 (step S101 processing), the LF receiving unit 202 cancels (starts up) the control unit 201 from the sleep state as processing of step S102. Then, a vibrator (not shown) is oscillated. The activated control unit 201 starts the operation in accordance with the clock generated by the oscillation of the vibrator as the process in step S103, and sends a wake response signal indicating that the clock operation has been started from the UHF transmission unit 203 as the process in step S104. Send.

  When the wake response signal is transmitted, the control unit 201 determines whether or not data is received by the LF reception unit 202 within a predetermined time limit through the determination processing in subsequent steps S105 and S106. Here, when data is not received by the LF receiving unit 202 within the predetermined time limit (“No” in the determination process of Step S105 and “Yes” in the determination process of Step S106), the control unit 201 proceeds to Step S107. As a process of the above, the process shifts to the sleep state, stops the oscillation of the oscillator, and temporarily ends the collation process S100. On the other hand, when data is received by the LF receiving unit 202 within the predetermined time limit (“Yes” in the determination process in step S105), the control unit 201 determines that the received data is a verification request through the determination process in subsequent steps S108 and S110. Or whether it is a connection request.

  Here, when the received data is a collation request (“Yes” in the determination process in step S108), the control unit 201 transmits the collation data including the unique code of the portable device 200 to the UHF transmission unit as a process in subsequent step S109. 203, the determination process in step S105 and the determination process in step S106 are executed again.

  On the other hand, when the received data is a connection request (“No” in the determination process of step S108 and “Yes” in the determination process of step S110), the control unit 201 performs the vehicle side device as the process of subsequent step S111. A Bluetooth connection to 100 is attempted, preparation for establishing BT communication is performed between the BT communication unit 204 and the BT communication unit 112, and it is determined whether or not the connection is OK as subsequent determination processing in step S112.

  In the determination process of step S112, when it is determined that BT communication is not established between the BT communication unit 204 and the BT communication unit 112 ("No" in the determination process of step S112), the control unit 201 As the process of S107, the process shifts to the sleep state, stops the clock, and temporarily ends the collation process S100. On the other hand, when it is determined in the determination process in step S112 that BT communication is established between the BT communication unit 204 and the BT communication unit 112 (“Yes” in the determination process in step S112), the control unit 201 continues. As a process of step S113, it shifts to the Bluetooth communication mode. Specifically, the control unit 201 receives the various information transmitted from the BT communication unit 112 by the BT communication unit 204, controls display of the received various information on the display unit 209, and stores the information in the storage unit 205. . And the control part 201 once complete | finishes this collation process S100.

  In the first embodiment, when a predetermined operation for starting the vehicle-mounted engine is performed on the vehicle-side device 100, the vehicle-side device 100 transmits a connection request from the LF transmission unit 102, and performs BT communication. At the same time, the portable device 200 tries the communication connection by the BT communication unit 204 when the connection request is received by the LF reception unit 202. As a result, communication according to the communication protocol based on the Bluetooth method can be performed without performing a new special operation only by performing a predetermined operation for controlling the vehicle on the vehicle side device 100. Therefore, the convenience of the portable device 200 is not impaired. In addition, since it is not necessary to always connect the BT communication unit 204 to the BT communication unit 112, power consumption of the portable device 200 can be reduced. Incidentally, when the control unit 201 is in the sleep state, power can be consumed only for the leakage current.

  In the first embodiment, the vehicle-side device 100 performs code verification with the portable device 200 when a predetermined operation for starting the in-vehicle engine is performed on the vehicle-side device 100. Then, after this code verification, the connection request is transmitted from the LF transmission unit 102. As a result, after the vehicle-mounted engine is started, communication according to the communication protocol based on the Bluetooth method can be automatically performed. Further, as described above, the collation process S100 is a process in which the BT connection process (the process of step S110 to step S113) is newly added to the collation process (the process of step S101 to step S109) that has been conventionally performed. Therefore, the existing smart start system that performs code verification does not need to be significantly changed and can be easily introduced.

(Second Embodiment)
Next, a second embodiment of the electronic key system according to the present invention and the portable device for vehicle control constituting the electronic key system will be described with reference to FIG. Here, FIG. 4 is a flowchart corresponding to FIG. 3 described above, and is a flowchart showing a processing procedure of the collation processing S200 executed by the portable device 200. Hereinafter, the operation of the portable device 200 will be described with reference to FIG. In addition, since the vehicle side apparatus 100 and the portable device 200 that constitute the electronic key system of the present embodiment have the same configuration as that of the first embodiment, overlapping description here is omitted.

  In the electronic key system according to the present embodiment, the vehicle-side device 100 performs code verification with the portable device 200 when a predetermined operation is performed on the vehicle-side device 100, and after performing this code verification. The mobile device 200 tries to establish a communication connection by the BT communication unit 112 (without transmitting a connection request from the LF transmission unit 102), and the portable device 200 performs code verification with the vehicle side device 100, and performs this code verification. After that, the communication connection by the BT communication unit 204 is tried (when the connection request is received by the LF reception unit 202).

  When the wake response signal is transmitted from the UHF transmission unit 203 as the processing of the previous step S104, the control unit 201 receives data by the LF reception unit 202 within a predetermined time limit through the determination processing of subsequent steps S105 and S106. Determine whether or not. Here, when data is not received by the LF receiving unit 202 within the predetermined time limit (“No” in the determination process of step S105 and “Yes” in the determination process of step S106), the control unit 201 continues to step S210. As a process of (1), it is determined whether or not the code verification with the vehicle side device 100 has been executed. Specifically, the control unit 201 stores in the storage unit 205 that the collation data including the unique code of the portable device 200 has been transmitted from the UHF transmission unit 203 when executing the process of the previous step S109. Thereby, it is possible to determine whether or not the code verification is executed with the vehicle side device 100.

  Here, when it is not after executing code collation with the vehicle side device 100 (“No” in the determination process of step S210), the control unit 201 shifts to the sleep state as the process of subsequent step S107. The clock is stopped, and the collation process S200 is temporarily terminated.

  On the other hand, when it is after executing code collation with the vehicle side device 100 (“Yes” in the determination process of step S210), the control unit 201 performs Bluetooth to the vehicle side device 100 as the process of subsequent step S211. Connection is attempted, preparation for establishment of BT communication is performed between the BT communication unit 204 and the BT communication unit 112, and it is determined whether or not the connection is OK as subsequent determination processing in step S212.

  In the determination process of step S212, when it is determined that BT communication is not established between the BT communication unit 204 and the BT communication unit 112 ("No" in the determination process of step S212), the control unit 201 As the process of S107, the process shifts to the sleep state, stops the clock, and temporarily ends the collation process S200. On the other hand, when it is determined in the determination process of step S212 that BT communication has been established between the BT communication unit 204 and the BT communication unit 112 (“Yes” in the determination process of step S212), the control unit 201 continues. As a process of step S213, it shifts to the Bluetooth communication mode. Specifically, the control unit 201 receives the various information transmitted from the BT communication unit 112 by the BT communication unit 204, controls display of the received various information on the display unit 209, and stores the information in the storage unit 205. . And the control part 201 once complete | finishes this collation process S200.

  In the second embodiment, the vehicle-side device 100 performs code verification with the portable device 200 when a predetermined operation is performed on the vehicle-side device 100, and after performing this code verification, While attempting communication connection by the BT communication unit 112 (without transmitting a connection request from the LF transmission unit 102), the portable device 200 performs code verification with the vehicle side device 100, and performs this code verification. Later, a communication connection by the BT communication unit 204 is tried (when an attempt is made to receive a connection request by the LF reception unit 202). This also enables communication according to the communication protocol based on the Bluetooth system without performing a new special operation only by performing a predetermined operation for controlling the vehicle on the vehicle side device 100. Therefore, the convenience of the portable device 200 is not impaired. In addition, since it is not necessary to always connect the BT communication unit 204 to the BT communication unit 112, power consumption of the portable device 200 can be reduced. Incidentally, when the control unit 201 is in the sleep state, power can be consumed only for the leakage current.

  The electronic key system and the vehicle control portable device according to the present invention are not limited to the configurations exemplified in the above embodiments, and various modifications may be made without departing from the spirit of the present invention. It is possible to implement. In other words, for example, the following embodiment can be implemented by appropriately changing the above embodiment.

  In each of the above embodiments, code verification using wireless communication between the vehicle side device 100 and the portable device 200 is performed, and after this code verification, based on the Bluetooth method between the vehicle side device 100 and the portable device 200. Although communication was performed according to the communication protocol, it is not limited to code verification. Before code verification, communication may be performed between the vehicle side device 100 and the portable device 200 according to a communication protocol based on the Bluetooth method. In addition, code verification need not be performed in the first place.

  In each of the above-described embodiments, the engine switch 106 is set to “IG-ON” as a predetermined operation on the vehicle-side device 100. However, the present invention is not limited to this. In addition, for example, setting the engine switch 106 to “ACC” may be employed, or depression of a brake pedal (not shown) may be employed. In short, any operation for controlling the vehicle may be used.

DESCRIPTION OF SYMBOLS 100 ... Vehicle side apparatus, 101 ... Control part (vehicle side control part), 102 ... LF transmission part (vehicle side 2nd communication part), 103 ... UHF reception part (vehicle side 2nd communication part), 106 ... Engine switch, DESCRIPTION OF SYMBOLS 107 ... Door antenna, 108 ... Indoor antenna, 109 ... Outside antenna of back door, 111 ... Data logger apparatus, 112 ... Bluetooth communication part (vehicle side 1st communication part), 200 ... Portable machine, 201 ... Control part (Portable machine side) Control unit), 202... LF reception unit (second portable device side communication unit), 203... UHF transmission unit (second portable device side communication unit), 204... Bluetooth communication unit (first portable unit communication unit side), 205. ... Storage unit 206 ... Unlock switch 207 ... Lock switch 209 ... Display device C ... Vehicle

Claims (5)

An electronic key system for controlling the vehicle using wireless communication between a vehicle control portable device carried by a user and a vehicle side device mounted on the vehicle,
The vehicle control portable device is:
A vehicle-side first communication unit that transmits and receives information to and from the vehicle-side device according to a communication protocol based on the Bluetooth method;
A portable device-side second communication unit that transmits and receives information to and from the vehicle-side device according to a communication protocol different from the portable device-side first communication unit;
The portable device side first communication unit is configured to receive a connection request for requesting the portable device side first communication unit to transmit / receive information to / from the vehicle side device based on the portable device side first communication unit. A portable device side control unit that performs communication connection by the communication unit,
The vehicle side device
A vehicle-side first communication unit that transmits and receives information to and from the vehicle control portable device according to a communication protocol based on the Bluetooth method;
A vehicle-side second communication unit that transmits and receives information to and from the vehicle control portable device according to a communication protocol different from the vehicle-side first communication unit;
The vehicle is controlled based on information received by the vehicle-side second communication unit, and a predetermined operation for controlling the vehicle is performed on the vehicle-side device. An electronic key system comprising: a vehicle-side control unit that transmits the connection request from the second communication unit on the side and performs communication connection by the first communication unit on the vehicle side. The electronic key system according to claim 1.
The vehicle side device performs code collation with the portable device for vehicle control based on the predetermined operation being performed on the vehicle side device, and after performing the code collation, the vehicle side device An electronic key system, wherein the connection request is transmitted from a second communication unit. An electronic key system for controlling the vehicle according to a result of code verification using wireless communication between a portable device for vehicle control carried by a user and a vehicle side device mounted on the vehicle,
The vehicle control portable device is:
A vehicle-side first communication unit that transmits and receives information to and from the vehicle-side device according to a communication protocol based on the Bluetooth method;
A portable device-side second communication unit that transmits and receives information to and from the vehicle-side device according to a communication protocol different from the portable device-side first communication unit;
The portable device side second communication unit performs code verification with the vehicle side device, and after performing the code verification, the portable device side control unit that performs communication connection by the portable device side first communication unit; Prepared,
The vehicle side device
A vehicle-side first communication unit that transmits and receives information to and from the vehicle control portable device according to a communication protocol based on the Bluetooth method;
A vehicle-side second communication unit that transmits and receives information to and from the vehicle control portable device according to a communication protocol different from the vehicle-side first communication unit;
The vehicle is controlled based on information received by the vehicle-side second communication unit, and a predetermined operation for controlling the vehicle is performed on the vehicle-side device. A vehicle-side control unit that performs code verification by the vehicle-side second communication unit with the control portable device, and performs communication connection by the vehicle-side first communication unit after performing this code verification. Features an electronic key system. A portable device for vehicle control that controls a vehicle using wireless communication with a vehicle-side device that is carried by a user and mounted on the vehicle,
A portable device-side first communication unit that transmits and receives information to and from the vehicle-side device according to a communication protocol based on the Bluetooth method;
A portable device-side second communication unit that transmits and receives information to and from the vehicle-side device according to a communication protocol different from the portable device-side first communication unit;
The portable device side first communication unit is configured to receive a connection request for requesting the portable device side first communication unit to transmit / receive information to / from the vehicle side device based on the portable device side first communication unit. A portable device for vehicle control, comprising: a portable device-side control unit that performs communication connection by a communication unit. A portable device for vehicle control that controls the vehicle according to a result of code verification using wireless communication with a vehicle-side device that is carried by a user and mounted on the vehicle,
A portable device-side first communication unit that transmits and receives information to and from the vehicle-side device according to a communication protocol based on the Bluetooth method;
A portable device-side second communication unit that transmits and receives information to and from the vehicle-side device according to a communication protocol different from the portable device-side first communication unit;
The portable device side second communication unit performs code verification with the vehicle side device, and after performing the code verification, the portable device side control unit that performs communication connection by the portable device side first communication unit; A portable machine for controlling a vehicle, comprising:

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