JP2009165050A - Communication apparatus, communication control method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To conveniently use the function using a short-range communication both in and out of a vehicle. <P>SOLUTION: A CPU71 moves each antenna of the antenna parts 62-1 to 62-4 for each seat of its own vehicle to an in-vehicle communication position with a mobile phone easily placed over from the seat and the mobile phone hardly placed over from the outside of the vehicle, or an out-vehicle communication position with the mobile phone easily placed over from the seat side of the outside of its own vehicle on the basis of the presence of the on-vehicle people of each seat in its own vehicle. The CPU71 supplies information received from the mobile phone through an antena part 62, a relay part 63 and a decoding part 74 to a subsequent stage through a bass 81 and a communication control part 72 together with the received antenna information expressing communication with the mobile phone through an antenna for the seat and communication in-vehicle communication state or out-vehicle communication state. This invention can be applied, for instance, for an in-vehicle reader writer. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a communication device, a communication control method, and a program, and more particularly, to a communication device, a communication control method, and a program suitable for use in a vehicle-mounted communication device that performs proximity communication.

  In recent years, in vehicles such as automobiles, a function using a contactless IC card communication technology (hereinafter also referred to as a vehicle noncontact IC card function) has been widely spread and studied. For example, in public transportation such as buses and taxis, a service that enables settlement by electronic money using a non-contact IC card has been spreading. In addition, for example, in a car sharing system in which a plurality of members share a car, it is considered to use a non-contact IC card to identify the member and release the door lock.

  Along with this, there are an increasing number of cases in which a reader / writer that performs proximity communication with a device having a non-contact IC card function (hereinafter also referred to as a non-contact IC card device) such as a mobile phone is mounted on a vehicle.

  By the way, as a form using the non-contact IC card function for the vehicle, there are two kinds of forms, that is, when used from outside the vehicle such as unlocking the door, and when used inside the vehicle such as starting the engine.

  Therefore, conventionally, in an in-vehicle communication system using communication technology of a non-contact IC card, it has been proposed to provide two types of antennas, an antenna for vehicle exterior and an antenna for vehicle interior (see, for example, Patent Document 1). ).

JP 2007-137135 A

  In the future, non-contact IC card functions for vehicles will continue to spread, and the use of non-contact IC card functions for vehicles is expected to diversify. Therefore, it is desirable to make the vehicle non-contact IC card function more convenient to use from both inside and outside the vehicle.

  The present invention has been made in view of such a situation, and makes it possible to more conveniently use the vehicle non-contact IC card function both from inside and outside the vehicle.

  A communication device according to one aspect of the present invention is a vehicle-mounted communication device that performs proximity communication with a communication terminal via an antenna, and the communication terminal is brought close to the antenna in the vehicle based on the presence or absence of a passenger in the vehicle. A state control means for switching between an in-vehicle communication state that is suitable for performing near field communication and an out-of-vehicle communication state that is suitable for performing near field communication by bringing the communication terminal close to the antenna from the outside of the vehicle; Output means for outputting information indicating whether the communication is performed with the communication terminal in the in-vehicle communication state or the external communication state.

  In the communication device according to one aspect of the present invention, based on the presence or absence of a passenger in the vehicle, an in-vehicle communication state that is suitable for performing proximity communication by bringing a communication terminal close to the antenna in the vehicle, and the vehicle The communication terminal is switched from the outside communication state, which is a suitable state for performing proximity communication by bringing the communication terminal close to the antenna from the outside, and indicates whether the communication terminal communicates with the communication terminal in the in-vehicle communication state or the outside communication state Information is output.

  Therefore, a function using proximity communication can be used from both inside and outside the vehicle. In addition, for example, the contents of functions provided in the in-vehicle communication state and the out-of-vehicle communication state can be changed, and the function using the proximity communication can be used more conveniently from both inside and outside the vehicle.

  This state control means and output means are constituted by, for example, a CPU (Central Processing Unit). Moreover, this communication apparatus is comprised by a reader / writer or a reader, for example. Furthermore, this communication terminal is configured by, for example, a mobile phone, a portable information terminal, a clock, a computer, a remote controller, a pager, a game device, a multimedia device, or a portable audio device.

  The antenna can be provided in the vicinity of a plurality of seats in the vehicle, and the state control means includes a communication terminal connected to the communication terminal based on the presence or absence of a passenger in the vicinity of the seat provided with the antenna. In-vehicle communication state that is suitable for close proximity communication with the antenna close to the antenna and outside the vehicle that is suitable for close proximity communication with the communication terminal close to the antenna from the seat side outside the vehicle The communication state can be switched.

  Thereby, the in-vehicle communication state and the in-vehicle communication state can be switched for each seat. In addition, a function using proximity communication can be used from both inside and outside the vehicle at each seat.

  This output means can further output information indicating which seat antenna is used for communication with the communication terminal.

  Thereby, the content of the function provided for every seat can be changed, for example, and a user's convenience improves.

  According to the setting, the state control means can also switch the antenna for the seat different from the driver's seat to the in-vehicle communication state in conjunction with switching the antenna for the driver's seat of the vehicle to the in-vehicle communication state. .

  Thereby, when a passenger gets into the driver's seat, all the antennas for the seat can be automatically switched to the in-vehicle communication state.

  The communication apparatus may further include a power saving mode setting unit that sets an antenna that has passed a predetermined time after being switched to the vehicle outside communication state to a power saving mode that reduces power consumption of the antenna.

  Thereby, power consumption can be suppressed and it can prevent that the power of the battery of a vehicle falls while stopping.

  This power saving mode setting means is constituted by, for example, a CPU (Central Processing Unit).

  This antenna is composed of an in-vehicle antenna installed at a position where it is easy to bring the communication terminal close in the vehicle, and an external antenna installed at a position where the communication terminal is easy to approach from the outside of the vehicle. The state control means can switch between an in-vehicle communication state in which the in-vehicle antenna can be used and an out-of-vehicle communication state in which the in-vehicle antenna can be used.

  This prevents the antenna from interfering with the passenger when switching between the in-vehicle communication state and the out-vehicle communication state. Further, it is possible to prevent the state of the antenna from being changed due to a failure of a driving part that moves the antenna.

  The state control means can switch between the in-vehicle communication state and the out-vehicle communication state by controlling the position of the antenna.

  Thereby, the in-vehicle communication state and the out-of-vehicle communication state can be switched with one antenna.

  A communication control method or program according to one aspect of the present invention is a communication control method for an in-vehicle communication device that performs proximity communication with a communication terminal via an antenna, or an in-vehicle communication method that performs proximity communication with a communication terminal via an antenna. In the program for causing the computer of the communication device to execute processing, based on the presence or absence of a passenger in the vehicle, an in-vehicle communication state that is suitable for close proximity communication with the communication terminal close to the antenna in the vehicle; A state control step for switching between the communication state outside the vehicle and the communication state outside the vehicle which is suitable for performing proximity communication by bringing the communication terminal close to the antenna from the outside of the vehicle, and the communication terminal in either the vehicle communication state or the vehicle communication state And an output step for outputting information indicating whether communication has been performed.

  In the communication control method or program according to one aspect of the present invention, the in-vehicle communication state is a state suitable for performing proximity communication by bringing the communication terminal close to the antenna in the vehicle based on the presence or absence of a passenger in the vehicle. And the outside communication state, which is a suitable state for performing proximity communication by bringing the communication terminal close to the antenna from the outside of the vehicle, and communicated with the communication terminal in either the in-vehicle communication state or the outside-vehicle communication state. Information indicating that is output.

  Therefore, a function using proximity communication can be used from both inside and outside the vehicle. In addition, for example, the contents of functions provided in the in-vehicle communication state and the out-of-vehicle communication state can be changed, and the function using the proximity communication can be used more conveniently from both inside and outside the vehicle.

  This state control step includes, for example, an in-vehicle communication state that is suitable for performing proximity communication by bringing a communication terminal close to an antenna in the vehicle based on the presence or absence of a passenger in the vehicle, and from the outside of the vehicle. Consists of a state control step by which the CPU switches between the communication state outside the vehicle, which is suitable for performing proximity communication by bringing the communication terminal close to the antenna, and this output step includes, for example, either the communication state inside the vehicle or the communication state outside the vehicle. The output step of outputting information indicating whether the communication with the communication terminal in the state is output by the CPU.

  As described above, according to one aspect of the present invention, a function using proximity communication can be used from both inside and outside the vehicle. In particular, according to one aspect of the present invention, a function using proximity communication can be more conveniently used from both inside and outside the vehicle.

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

  FIG. 1 is a block diagram showing an embodiment of an in-vehicle system to which the present invention is applied. The in-vehicle system 11 in FIG. 1 is a system provided in various vehicles (for example, private cars, trucks, buses, etc.), and controls the operation of the vehicle in which the in-vehicle system 11 is provided (hereinafter also referred to as the own vehicle). And provide various functions to passengers.

  The in-vehicle system 11 is configured to include an in-vehicle reader / writer 31, passenger detection units 32-1 to 32-4, a communication unit 33, a vehicle control unit 34, a car navigation device 35, and an audio device 36. The in-vehicle reader / writer 31, the passenger detection units 32-1 to 32-4, the communication unit 33, the vehicle control unit 34, the car navigation device 35, and the audio device 36 are connected to each other via the in-vehicle network 41. .

  The in-vehicle reader / writer 31 performs proximity communication by electromagnetic induction using a carrier wave of a predetermined frequency with the mobile phone 12 having a non-contact IC card function. As the frequency of the carrier wave used by the in-vehicle reader / writer 31, for example, 13.56 MHz of an ISM (Industrial Scientific Medical) band can be employed. Proximity communication means communication that enables a distance between communicating devices to be within several tens of centimeters, and includes communication performed by contacting (communicating with) the communicating devices.

The in-vehicle reader / writer 31 detects whether or not the mobile phone 12 is in a communicable position by monitoring the load state while transmitting a predetermined electromagnetic wave. When the mobile phone 12 is in a communicable position, the in-vehicle reader / writer 31 transmits / receives various commands to / from the mobile phone 12.

  The in-vehicle reader / writer 31 transmits / receives various information to / from the communication unit 33, the vehicle control unit 34, the car navigation device 35, and the audio device 36 via the in-vehicle network 41, and detects the state of each device. Or control the operation of each device.

  Further, the in-vehicle reader / writer 31 controls its own operation based on the information indicating the detection result of the passenger in the vehicle supplied from the passenger detection units 32-1 to 32-4 via the in-vehicle network 41. I do.

  The passenger detection units 32-1 to 32-4 are configured by, for example, a seating sensor that detects whether or not a person is sitting on a seat, or a combination of a camera and a recognition device that recognizes the presence of a person. . The passenger detection unit 32-1 is provided at or near the driver's seat, the passenger detection unit 32-2 is provided at or near the passenger seat, and the passenger detection unit 32-3 is provided on the right rear seat or The passenger detection unit 32-4 is provided in the vicinity of the left rear seat or in the vicinity thereof. The passenger detection units 32-1 to 32-4 detect the presence or absence of passengers near the installed seats, and supply information indicating the detection result to the in-vehicle reader / writer 31 via the in-vehicle network 41.

  Hereinafter, when it is not necessary to individually distinguish the passenger detection units 32-1 to 32-4, they are simply referred to as the passenger detection unit 32.

  The communication unit 33 connects to the network 14 and communicates with the server 13 connected to the network 14 by wireless communication of a predetermined method. The communication of the communication unit 33 is, for example, a wireless LAN (Local Area Network) standard defined by IEEE (Institute of Electrical and Electronic Engineers) 802.11 (802.11a, 802.11b, 802.11g, etc.), W-CDMA (Wideband Standards such as code division multiple access (PID), PIAFS (Personal Handyphone System Internet Access Forum Standard) and other mobile phones, PHS (Personal Handyphone System) communication standards, and Bluetooth (trademark) can be applied. The communication unit 33 transmits and receives various types of information to and from each unit of the in-vehicle system 11 via the in-vehicle network 41.

  The vehicle control unit 34 includes, for example, a CPU (Central Processing Unit), an ECU (Electronic Control Unit), and the like. The vehicle control unit 34 controls various operations of the host vehicle, as will be described later with reference to FIG.

  The car navigation device 35 is configured by, for example, a commercially available car navigation device, and the audio device 36 is configured by, for example, a commercially available in-vehicle audio device.

  FIG. 2 is a block diagram illustrating an example of a functional configuration of the in-vehicle reader / writer 31. The in-vehicle reader / writer 31 is configured to include a controller 61, antenna units 62-1 to 62-4, a relay unit 63, and an input unit 64. The controller 61 is configured to include a CPU (Central Processing Unit) 71, a communication control unit 72, a storage unit 73, a demodulation unit 74, a modulation unit 75, an oscillation unit 76, and a drive 77. The CPU 71, communication control unit 72, storage unit 73, and drive 77 are connected to each other via a bus 81.

  The CPU 71 receives commands from the mobile phone 12 via the antenna units 62-1 to 62-4, the relay unit 63, and the demodulation unit 74. The CPU 71 is also connected to the passenger detection units 32-1 to 32-4, the communication unit 33, the vehicle control unit 34, the car navigation device 35, and the audio device via the in-vehicle network 41, the communication control unit 72, and the bus 81. 36 transmits and receives various information. The CPU 71 executes processing according to the acquired command and information according to the program stored in the storage unit 73.

  In addition, the CPU 71 performs predetermined processing (for example, Manchester encoding) on the command transmitted to the mobile phone 12 and then supplies the command to the modulation unit 75. Furthermore, the CPU 71 performs predetermined processing (for example, decoding of Manchester encoded data) on the command transmitted from the mobile phone 12. The CPU 71 receives information contained in the command received from the mobile phone 12 as necessary via the bus 81, the communication control unit 72, and the in-vehicle network 41, the communication unit 33, the vehicle control unit 34, the car navigation device 35, Alternatively, the data is supplied to the audio device 36 or stored in the storage unit 73 via the bus 81.

  Further, the CPU 71 controls the operations of the antenna units 62-1 to 62-4 via the relay unit 63, as will be described later with reference to FIG.

  The communication control unit 72 includes, for example, an SCC (Serial Communications Controller) and performs communication with each device connected to the in-vehicle network 41 via the in-vehicle network 41.

  The storage unit 73 includes a RAM (Random Access Memory), a ROM (Read Only Memory), a nonvolatile memory, and the like. The storage unit 73 stores information necessary for data processing in advance or temporarily stores data being processed. The storage unit 73 stores a program used by the CPU 71.

  The demodulating unit 74 demodulates the modulated wave (for example, ASK modulated wave) received from the mobile phone 12 via the antenna units 62-1 to 62-4 and the relay unit 63, and demodulates the demodulated data (command). It outputs to CPU71.

  The modulation unit 75 modulates (for example, ASK modulation) a carrier wave having a predetermined frequency (for example, 13.56 MHz) supplied from the oscillation unit 76 based on data (command) supplied from the CPU 71, and generates a modulated wave. Is output as an electromagnetic wave to the mobile phone 12 via the relay unit 63 and the antenna units 62-1 to 62-4.

  The drive 77 is connected to the bus 81 as necessary. When a removable medium 78 such as an optical disk, a magneto-optical disk, or a semiconductor memory is loaded, the drive 77 drives them to acquire programs and data recorded therein. The acquired program and data are transferred to the storage unit 73 via the bus 81 and stored as necessary.

  The antenna unit 62-1 is an antenna unit for a driver's seat and is provided near the driver's seat of the own vehicle. FIG. 3 is a diagram schematically illustrating an example of the configuration of the antenna unit 62-1. FIG. 3 shows a front view from the driver's seat of a vehicle with a driver's seat provided on the right side (so-called right-hand drive), and the vertical direction in the figure coincides with the vertical direction of the vehicle. The left-right direction in the figure coincides with the left-right direction of the vehicle.

  The antenna unit 62-1 is configured to include an antenna 101-1, a shaft 102-1, and a motor 103-1.

  The motor 103-1 is installed on a dashboard (not shown) in the vicinity of the driver seat window 111, for example. The motor 103-1 rotates the shaft 102-1 counterclockwise or clockwise under the control of the CPU 71, and the antenna 101-1 is indicated by a position indicated by a solid line (hereinafter also referred to as an in-vehicle communication position) or a dotted line. To a position (hereinafter also referred to as an out-of-vehicle communication position).

  When the antenna 101-1 is in the in-vehicle communication position, it becomes easy to place (close) the mobile phone 12 from the driver's seat to the antenna 101-1, and the mobile phone 12 from the outside to the antenna 101-1. It becomes difficult to make them close. On the other hand, when the antenna 101-1 is located at the outside communication position, the mobile phone 12 is pointed at the antenna 101-1 from the driver seat side outside the host vehicle, for example, from the right side of the driver seat window 111 in FIG. To be close).

  In addition, although illustration is abbreviate | omitted, the antenna parts 62-2 thru | or 62-4 also have the structure similar to the antenna part 62-1. That is, the antenna unit 62-2 is configured to include the antenna 101-2, the shaft 102-2, and the motor 103-2, and the antenna unit 62-3 includes the antenna 101-3, the shaft 102-3, and The antenna unit 62-4 is configured to include the antenna 101-4, the shaft 102-4, and the motor 103-4.

  The antenna unit 62-2 is an antenna unit for the passenger seat, and is provided in the vicinity of the passenger seat of the own vehicle. Under the control of the CPU 71, the motor 103-2 of the antenna unit 62-2 can easily rotate the shaft 102-2 counterclockwise or clockwise so that the mobile phone 12 is picked up (closed) from the passenger seat. It is easy to pick up (close) the mobile phone 12 from a position (in-vehicle communication position) where it is difficult to pick up (close) the mobile phone 12 from outside the vehicle or from the passenger seat side outside the vehicle. The position of the antenna 101-2 is switched to the position (external vehicle communication position).

  The antenna unit 62-3 is an antenna unit for the right rear seat, and is provided in the vicinity of the rear seat on the right side of the own vehicle. Under the control of the CPU 71, the motor 103-3 of the antenna unit 62-3 rotates the shaft 102-3 counterclockwise or clockwise, and picks up (closes) the mobile phone 12 from the right rear seat. It is easy to pick up (close) the mobile phone 12 from a position (in-vehicle communication position) where it is difficult to pick up (close) the mobile phone 12 from the outside of the vehicle, or from the right rear seat side outside the host vehicle. The position of the antenna 101-3 is switched to a position where it is easy to communicate (external communication position).

  The antenna unit 62-4 is an antenna unit for the left rear seat, and is provided in the vicinity of the left rear seat of the host vehicle. Under the control of the CPU 71, the motor 103-4 of the antenna unit 62-4 rotates the shaft 102-4 counterclockwise or clockwise, and picks up (closes) the mobile phone 12 from the left rear seat. It is easy to pick up (close) the mobile phone 12 from a position where it is difficult to pick up (close) the mobile phone 12 from outside the vehicle (in-vehicle communication position) or from the left rear seat side outside the host vehicle. The position of the antenna 101-4 is switched to a position where it is easy to communicate (external communication position).

  Hereinafter, when it is not necessary to individually distinguish the antenna units 62-1 to 62-4, they are simply referred to as the antenna unit 62, and when it is not necessary to individually distinguish the antennas 101-1 to 101-4, they are simply antennas. 101, when it is not necessary to distinguish the shafts 102-1 to 102-4 individually, it is simply referred to as the shaft 102, and when it is not necessary to distinguish the motors 103-1 to 103-4, the motor 103 is simply referred to. Called.

  Hereinafter, for each antenna 101, a state in which the antenna 101 is in the in-vehicle communication position is referred to as an in-vehicle communication state, and a state in which the antenna 101 is in the in-vehicle communication position is referred to as an out-of-vehicle communication state. That is, for each seat in the vehicle, a state suitable for close proximity communication by bringing the mobile phone 12 close to the antenna 101 from the seat in the vehicle is the in-vehicle communication state, and the mobile phone from the seat side outside the host vehicle A state suitable for performing proximity communication by bringing 12 close to the antenna 101 is an out-of-vehicle communication state.

  Returning to FIG. 2, the relay unit 63 relays communication between the antenna units 62-1 to 62-4 and the CPU 71, the demodulation unit 74, and the modulation unit 75. Specifically, for example, the relay unit 63 supplies the modulated wave supplied from the modulation unit 75 to the antenna 101 used for communication with the mobile phone 12. For example, the relay unit 63 supplies the modulated wave supplied from the antenna 101 to the demodulation unit 74.

  Further, for example, when communication is performed between the in-vehicle reader / writer 31 and the mobile phone 12, the relay unit 63 is information indicating the antenna 101 used for communication with the mobile phone 12, that is, the antenna 101. -1 to 101-4, information indicating which antenna 101 is used for communication with the mobile phone 12 is supplied to the CPU 71. For example, the relay unit 63 supplies a control signal supplied from the CPU 71 to the antenna unit 62 to the antenna unit 62 to be controlled.

  The input unit 64 includes, for example, a keyboard, a mouse, a switch, a button, and the like, and is operated when the user inputs various commands and data to the in-vehicle reader / writer 31.

  FIG. 4 is a block diagram showing an example of a functional configuration realized by the CPU 71 of the controller 61 of the in-vehicle reader / writer 31 executing a predetermined program. When the CPU 71 executes a predetermined program, functions including the passenger monitoring unit 151, the state control unit 152, the power saving mode control unit 153, and the communication processing unit 154 are realized.

  The passenger monitoring unit 151 acquires information indicating the detection result of the passenger from the passenger detection units 32-1 to 32-4 via the in-vehicle network 41, the communication control unit 72, and the bus 81. The passenger monitoring unit 151 monitors the presence of passengers in the vicinity of each seat of the host vehicle based on the detection results by the passenger detection units 32-1 to 32-4, and transmits information indicating the monitoring results to the state control unit 152. To supply.

  As will be described later with reference to FIG. 5, the state control unit 152 performs the state of each antenna 101 of each antenna unit 62 (in-vehicle communication state) via the relay unit 63 based on information from the passenger monitoring unit 151. Or control the communication state outside the vehicle). The state control unit 152 supplies information indicating the state of each antenna 101 to the power saving mode control unit 153 and the communication processing unit 154.

  Further, the state control unit 152 switches the driver seat interlock mode on / off setting based on a command input by the user via the input unit 64. The driver's seat interlocking mode is a mode in which when the driver's seat antenna 101-1 is switched to the in-vehicle communication state, the other seat antennas 101-2 to 101-4 are also switched to the in-vehicle communication state. .

  As will be described later with reference to FIG. 5, the power saving mode control unit 153 controls on / off of the power saving mode of each antenna 101 according to the state of each antenna 101.

  The communication processing unit 154 communicates with the mobile phone 12 through the antennas 101-1 to 101-4, the relay unit 63, the demodulation unit 74, or the modulation unit 75. Send and receive. In addition, the communication processing unit 154 transmits information to be transmitted to the mobile phone 12 as necessary via the in-vehicle network 41, the communication control unit 72, and the bus 81, the communication unit 33, the vehicle control unit 34, and the car navigation system. The data is acquired from the device 35 or the audio device 36 or read from the storage unit 73 via the bus 81.

  In addition, the communication processing unit 154 acquires information indicating the antenna 101 used for communication with the mobile phone 12 from the relay unit 63. Further, the communication processing unit 154 communicates the information received from the mobile phone 12 with the mobile phone 12 via which seat antenna 101 and whether the in-vehicle communication state or the external communication state, as necessary. The communication unit 33, the vehicle control unit 34, and the car navigation device 35 via the bus 81, the communication control unit 72, and the in-vehicle network 41 together with information (hereinafter also referred to as reception antenna information) indicating whether the communication is performed in the state of Or supplied to the audio device 36. That is, the reception antenna information is the information received via the antenna 101 for which seat the information received from the mobile phone 12 and the information received in the in-vehicle communication state or the out-of-vehicle communication state Is shown.

  Furthermore, the communication processing unit 154 performs various processes on information transmitted to the mobile phone 12 and information received from the mobile phone 12 as necessary.

  Next, processing of the in-vehicle system 11 will be described.

  First, the antenna control processing executed by the in-vehicle reader / writer 31 will be described with reference to the flowchart of FIG. This process is always performed when power is supplied to the in-vehicle reader / writer 31, for example, regardless of whether or not a motor (for example, an engine) of the own vehicle is started.

  In step S <b> 1, the passenger monitoring unit 151 determines whether there is a seat where a passenger is newly detected based on information from the passenger detection units 32-1 to 32-4. When the passenger monitoring unit 151 determines that there is a seat from which a new passenger is detected, the passenger monitoring unit 151 supplies information indicating the seat from which a new passenger is detected to the state control unit 152, and the process proceeds to step S2. .

  In step S2, the state control unit 152 sets the seat antenna 101 from which the passenger is newly detected to the in-vehicle communication state. Specifically, the state control unit 152 controls the motor 103 of the antenna unit 62 for the seat from which a passenger is newly detected via the relay unit 63, so that the antenna 101 for the seat is communicated with the in-vehicle communication. Move to position. The state control unit 152 supplies information indicating that the seat antenna 101 has been switched to the in-vehicle communication state to the power saving mode control unit 153 and the communication processing unit 154.

  In step S3, the state control unit 152 determines whether or not the driver's seat antenna 101 is set to the in-vehicle communication state. If it is determined that the driver's seat antenna 101 is set to the in-vehicle communication state, the process proceeds to step S4.

  In step S4, the state control unit 152 determines whether the driver's seat interlocking mode is set. If it is determined that the driver seat interlocking mode is set, the process proceeds to step S5.

  In step S5, the state control unit 152 sets the antenna 101 for the seats other than the driver's seat to the in-vehicle communication state. That is, the state control unit 152 controls the motor 103 of the antenna unit 62 via the relay unit 63 and moves the antenna 101 to the in-vehicle communication position for the antenna units 62 for all seats other than the driver's seat. . Of course, the state of the antenna unit 62 for the seat in which the position of the antenna 101 is already set to the in-vehicle communication position is maintained as it is. Thereby, when the driver's seat interlocking mode is set, the antenna 101 for other seats is also set to the in-vehicle communication state in conjunction with the antenna 101 for the driver's seat being set to the in-vehicle communication state. Thereafter, the process proceeds to step S11.

  On the other hand, if it is determined in step S4 that the driver seat interlock mode is not set, the process of step S5 is skipped, and the process proceeds to step S11.

  If it is determined in step S3 that the antenna 101 for a seat other than the driver's seat has been set to the in-vehicle communication state, the processes in steps S4 and S5 are skipped, and the process proceeds to step S11.

  Furthermore, when it is determined in step S1 that there is no seat where a passenger is newly detected, the process proceeds to step S6.

  In step S6, the occupant monitoring unit 151 determines whether there is a seat with no occupants based on information from the occupant detection units 32-1 to 32-4. The passenger monitoring unit 151 determines that there is no passenger in the seat where the passenger has been present and if there is no passenger for a predetermined period of time, and determines that there is no passenger. Information indicating the missing seat is supplied to the state control unit 152, and the process proceeds to step S7.

  In step S <b> 7, the state control unit 152 determines whether there is no passenger in the driver's seat based on information from the passenger monitoring unit 151. If it is determined that there are no passengers other than the driver's seat, the process proceeds to step S8.

  In step S8, similarly to the process of step S4, it is determined whether the driver seat interlocking mode is set. If it is determined that the driver seat interlocking mode is set, the process proceeds to step S9.

  In step S9, the state control unit 152 determines whether or not the driver's seat antenna 101 is set to the in-vehicle communication state. When it is determined that the driver's seat antenna 101 is not set to the in-vehicle communication state, that is, the driver's seat interlocking mode is set, but the driver's seat antenna 101 is set to the out-of-vehicle communication state, If it is not necessary to consider the driver seat interlocking mode, the process proceeds to step S10.

  On the other hand, if it is determined in step S8 that the driver seat interlocking mode is not set, the process of step S9 is skipped, and the process proceeds to step S10.

  If it is determined in step S7 that there are no passengers in the driver's seat, the processes in steps S8 and S9 are skipped, and the process proceeds to step S10.

  In step S <b> 10, the state control unit 152 sets the seat antenna 101 for which there is no occupant to the out-of-vehicle communication state. Specifically, the state control unit 152 controls the motor 103 of the antenna unit 62 for the seat where the passenger is gone via the relay unit 63, and moves the antenna 101 for the seat to the communication position outside the vehicle. Let The state control unit 152 supplies information indicating that the seat antenna 101 has been switched to the vehicle exterior communication state to the power saving mode control unit 153 and the communication processing unit 154. Thereafter, the process proceeds to step S11.

  On the other hand, when it is determined in step S9 that the driver's seat antenna 101 is set to the in-vehicle communication state, the process of step S10 is skipped, and the process proceeds to step S11. That is, since the driver's seat interlocking mode is set and the driver's seat antenna 101 is set to the in-vehicle communication state, the seat antenna 101 with no passengers cannot be switched to the out-of-vehicle communication state. In addition, the in-vehicle communication state remains.

  Further, in step S6, the passenger monitoring unit 151 determines that there is no seat where the passenger has disappeared from the seats that have been present until now, or there is a seat where the passenger has disappeared but there is no passenger. If it is not continued for a certain period of time, it is determined that there are no seats where there are no passengers, the processing of steps S7 to S10 is skipped, and the processing proceeds to step S11.

  As a result, even if the passenger disappears from the seat, the antenna 101 of the seat cannot be immediately switched to the outside communication state. For example, when the passenger temporarily leaves the seat, the state of the antenna 101 is changed. Frequent switching is prevented.

  In step S <b> 11, the power saving mode control unit 153 determines whether there is an antenna 101 for which a predetermined time has elapsed since switching to the out-of-vehicle communication state. If it is determined that there is an antenna 101 for which a predetermined time (for example, 10 minutes) has elapsed since switching to the outside-vehicle communication state, the process proceeds to step S12.

  In step S12, the power saving mode control unit 153 sets the antenna 101 to the power saving mode. For example, the power saving mode control unit 153 reduces the power consumption of the antenna 101 by setting the radio wave transmission interval longer than the predetermined interval for the antenna 101 for which a predetermined time has elapsed since entering the out-of-vehicle communication state. Thereafter, the process returns to step S1, and the processes after step S1 are executed.

  On the other hand, if it is determined in step S11 that there is no antenna 101 for which a predetermined time has elapsed since switching to the vehicle outside communication state, the process returns to step S1, and the processes after step S1 are executed.

  Next, a vehicle control process executed by the in-vehicle system 11 will be described with reference to the flowchart of FIG. This process is always performed, for example, even if the motor (for example, engine) of the own vehicle is not started.

  In step S31, the communication processing unit 154 of the in-vehicle reader / writer 31 determines whether the mobile phone 12 is detected. For example, the communication processing unit 154 periodically transmits a polling command via the modulation unit 75, the relay unit 63, and each antenna 101. When the mobile phone 12 is deceived by one of the antennas 101 and receives a polling command, the mobile phone 12 transmits a response command to the received polling command. When the communication processing unit 154 receives the response command via the antenna 101, the relay unit 63, and the demodulation unit 74 on which the mobile phone 12 is tricked, the communication processing unit 154 determines that the mobile phone 12 has been detected, Proceed to step S32.

  Note that the determination processing in step S31 is repeatedly performed periodically until it is determined that the mobile phone 12 has been detected.

  In step S <b> 32, the in-vehicle reader / writer 31 communicates with the mobile phone 12. Specifically, the relay unit 63 supplies information indicating the antenna 101 used for communication with the mobile phone 12 to the communication processing unit 154. The communication processing unit 154 transmits a command to the mobile phone 12 via the modulation unit 75, the relay unit 63, and the antenna 101 on which the mobile phone 12 is worn, or the antenna 101 on which the mobile phone 12 is hung. A command is received from the mobile phone 12 via the relay unit 63, the demodulation unit 74, and the communication processing unit 154, and information is transmitted to and received from the mobile phone 12.

  At this time, for example, if necessary, authentication processing using an ID or the like is performed between the in-vehicle system 11 and the mobile phone 12, and the in-vehicle system 11 controls subsequent processing according to the result of the authentication processing. You may do it. For example, it is conceivable that the subsequent processing is performed when authentication is successful, and the subsequent processing is not performed when authentication fails. In the authentication process, for example, a face image captured using the camera of the mobile phone 12 may be used.

  Further, for example, the user inputs a command for the in-vehicle system 11 to the mobile phone 12 as necessary, and the mobile phone 12 transmits a command including the command to the in-vehicle reader / writer 31. Note that when the process executed by the in-vehicle system 11 is fixed by placing the mobile phone 12 over the antenna 101 (closer), it is not always necessary to input a command to the in-vehicle system 11.

  In step S33, the communication processing unit 154 outputs the received information. Specifically, the communication processing unit 154 supplies information received from the mobile phone 12 to the storage unit 73 via the bus 81 and stores the information as needed. In addition, the communication processing unit 154 transmits the information received from the mobile phone 12 and the reception antenna information as necessary via the bus 81, the communication control unit 72, and the in-vehicle network 41, the communication unit 33, the vehicle The data is supplied to the control unit 34, the car navigation device 35, or the audio device 36.

  At this time, the communication processing unit 154 performs necessary processing on the information from the mobile phone 12 and outputs the information.

  In step S34, the in-vehicle system 11 performs processing corresponding to the received information. That is, each part of the in-vehicle system 11 controls the operation of the own vehicle based on the user's command indicated by the information acquired from the mobile phone 12 and the reception antenna information.

  For example, when the mobile phone 12 is held over the antenna 101 in the vehicle communication state and a user command is input via the antenna 101, the following processing may be performed.

  For example, the vehicle control unit 34 opens and closes a door lock of a seat provided with the antenna 101 that receives a command from a user, opens and closes a slide door, and opens and closes a window.

  For example, the vehicle control unit 34 opens the hood of the host vehicle, turns off the headlights, stores the electric door mirror, releases the parking brake or the parking position, and the like.

  Further, for example, the vehicle control unit 34 is configured to check the state of the vehicle and the driving environment via the in-vehicle network 41, the communication control unit 72, the bus 81, the communication processing unit 154, the modulation unit 75, the relay unit 63, and the antenna 101. (For example, travel distance, fuel consumption, remaining amount of fuel, seat position, set temperature of an air conditioner (so-called air conditioner), etc.) are transmitted to the mobile phone 12.

  For example, the car navigation device 35 carries the position information of the own vehicle via the in-vehicle network 41, the communication control unit 72, the bus 81, the communication processing unit 154, the modulation unit 75, the relay unit 63, and the antenna 101. Transmit to the telephone 12.

  Further, for example, the audio device 36 can store music data and video stored in the vehicle network 41, the communication control unit 72, the bus 81, the communication processing unit 154, the modulation unit 75, the relay unit 63, and the antenna 101. Data is transmitted to the mobile phone 12.

  Further, for example, the vehicle control unit 34 receives a message input to the mobile phone 12 by operating a key of the mobile phone 12 and displays the message on the display device of the own vehicle, or outputs it as a sound from a speaker or the like. To do. Thereby, for example, information to be confirmed at the time of boarding can be set in the vehicle in advance, or messages can be exchanged between a plurality of users via the vehicle.

  Furthermore, for example, when a charger is provided outside the host vehicle, the vehicle control unit 34 enables charging of the mobile phone 12 according to the result of the authentication process.

  In addition, when performing inter-vehicle communication, for example, by placing the mobile phone 12 on the antenna of each vehicle that performs communication, ID information for identifying and linking a communication partner is set in the communication unit 33, and inter-vehicle communication is performed. Establish.

  On the other hand, when the mobile phone 12 is held over the antenna 101 in the in-vehicle communication state and a command from the user is input via the antenna 101, the following processing may be performed.

  For example, the communication processing unit 154 communicates with the server 13 via the in-vehicle network 41, the communication unit 33, and the network 14 (for example, payment of tolls, payment of parking fees, car insurance, Make payments). In this case, for example, the electronic money function of the mobile phone 12 can be used.

  Further, for example, the vehicle control unit 34 adjusts the driving environment of the host vehicle (for example, the seat position, the set temperature of the air conditioner, etc.).

  Further, for example, the vehicle control unit 34 is configured to check the state of the vehicle and the driving environment via the in-vehicle network 41, the communication control unit 72, the bus 81, the communication processing unit 154, the modulation unit 75, the relay unit 63, and the antenna 101. Is transmitted to the mobile phone 12.

  Further, for example, the audio device 36 is connected to the cellular phone 12 via the in-vehicle network 41, the communication control unit 72, the bus 81, the communication processing unit 154, the modulation unit 75, the relay unit 63, and the antenna 101. Send and receive data and video data.

  Further, for example, the communication unit 33 communicates with the mobile phone 12 via the in-vehicle network 41, the communication control unit 72, the bus 81, the communication processing unit 154, the modulation unit 75, the relay unit 63, and the antenna 101. Forward mail.

  Further, for example, the vehicle control unit 34 locks the door of the seat door for which the antenna 101 is in the in-vehicle communication state from the outside of the own vehicle (for example, using a switch provided near the door handle). Prevent opening and closing.

  Regardless of the state of communication outside the vehicle or the state of communication inside the vehicle, information and data transmitted from the vehicle to the mobile phone 12 are used by the mobile phone 12 itself, for example, displayed on a screen, or via a network such as the Internet. Thus, it is possible to further transfer from the mobile phone 12 to a server or the like that provides various services.

  In addition, processes other than opening / closing the door lock, opening / closing the sliding door, and opening / closing the window may be performed only when the antenna 101 that receives a command from the user is an antenna for a driver's seat, for example. is there.

  Thereafter, the process returns to step S31, and the processes after step S31 are executed.

  As described above, for each seat in the vehicle, the state of each antenna 101 is appropriately switched to the in-vehicle communication state or the out-of-vehicle communication state based on the presence or absence of a passenger. This makes it easy to use the contactless IC card function from inside and outside the car.

  In addition, since the antenna 101 is in the in-vehicle communication state for the seat where the passenger is present, it is difficult to use the vehicle non-contact IC card function provided by the in-vehicle system 11 by holding the mobile phone 12 from outside the vehicle. . Therefore, when a passenger is in the vehicle, functions that are inconvenient when used from outside the vehicle (for example, opening and closing of a door) are prevented, and the safety of the passenger and leakage of information are prevented. be able to.

  Further, the in-vehicle reader / writer 31 outputs reception antenna information together with information received from the mobile phone 12. Therefore, as described above, the subsequent devices (for example, the communication unit 33, the vehicle control unit 34, the car navigation device 35, and the audio device 36) receive the antenna 101 that receives information from the mobile phone 12, and the antenna. The application to be executed can be switched according to the state 101, and the convenience for the user is improved.

  Further, since the in-vehicle reader / writer 31 is assumed to operate using the battery of the own vehicle as a power source, the power consumption of the in-vehicle reader / writer 31 is suppressed when the own vehicle stops and the battery is not charged. It is desirable to do so. Therefore, as described above, when the vehicle is in the communication state outside the vehicle, the power saving mode is automatically set, so that the battery power is consumed when the vehicle is stopped, and the vehicle battery power is reduced. It is possible to prevent the so-called battery from being lowered.

  In the above description, the example in which the in-vehicle communication state and the out-of-vehicle communication state are switched by mechanically moving the antenna of each seat has been described. An in-vehicle communication state and an in-vehicle communication state may be switched by providing an antenna and switching the antenna to be used.

  Here, referring to FIG. 7 to FIG. 9, two types of antennas, an in-vehicle antenna and an out-of-vehicle antenna, are provided in each seat, and the in-vehicle communication state and the out-of-vehicle communication state are changed by switching the antenna to be used. An embodiment (second embodiment) of the in-vehicle reader / writer 31 that is switched will be described.

  FIG. 7 is a block diagram showing a second embodiment of the in-vehicle reader / writer 31. In the figure, portions corresponding to those in FIG. 2 are denoted by the same reference numerals, and description of portions having the same processing will be omitted because it will be repeated.

  The in-vehicle reader / writer 31 shown in FIG. 7 includes a controller 61, an input unit 64, antennas 201-1A to 201-4B, and a switch 202. The controller 61 is configured to include a CPU 71, a communication control unit 72, a storage unit 73, a demodulation unit 74, a modulation unit 75, an oscillation unit 76, and a drive 77. The CPU 71, communication control unit 72, storage unit 73, and drive 77 are connected to each other via a bus 81.

  The antennas 201-1A and 201-1B are antennas for a driver's seat and are installed near the driver's seat of the own vehicle. Among them, the antenna 201-1A is an antenna for the inside of the vehicle, and is a position where the mobile phone 12 can be easily picked (closed) from the driver's seat and difficult to be picked (closed) from the outside of the vehicle (in-vehicle communication position). ). The antenna 201-1 </ b> B is an antenna for outside the vehicle, and is installed at a position (external communication position) where the mobile phone 12 can be easily picked up (closed) from the driver's seat outside the vehicle. Therefore, for the driver's seat, the state in which the antenna 201-1A is turned on and the antenna 201-1B is turned off is the in-vehicle communication state, the antenna 201-1B is turned on, and the antenna 201-1A is turned off. Is the state of communication outside the vehicle.

  Antennas 201-2A and 201-2B are antennas for passenger seats, and are installed near the passenger seat of the own vehicle. Among them, the antenna 201-2A is an in-vehicle antenna, and is a position where the mobile phone 12 can be easily picked (closed) from the passenger seat and difficult to be picked (closed) from outside the vehicle (in-vehicle communication position). ). The antenna 201-2B is an antenna for the outside of the vehicle, and is installed at a position (external communication position) where the mobile phone 12 can be easily picked up (closed) from the passenger seat side outside the host vehicle. Therefore, for the passenger seat, the state where the antenna 201-2A is turned on and the antenna 201-2B is turned off is the in-vehicle communication state, the antenna 201-2B is turned on, and the antenna 201-2A is turned off. Is the state of communication outside the vehicle.

  The antennas 201-3A and 201-3B are antennas for the right rear seat, and are installed in the vicinity of the right rear seat of the host vehicle. Among them, the antenna 201-3A is an antenna for the inside of the vehicle, and it is easy to pick up (close) the mobile phone 12 from the rear seat on the right side, and it is difficult to touch (close) the outside of the vehicle (inside the vehicle). Installed at the communication location). The antenna 201-3B is an antenna for the outside of the vehicle, and is installed at a position (external communication position) where the mobile phone 12 can be easily tucked (closed) from the right rear seat side outside the host vehicle. Therefore, for the right rear seat, the state where the antenna 201-3A is turned on and the antenna 201-3B is turned off is the in-vehicle communication state, the antenna 201-3B is turned on, and the antenna 201-3A is turned off. The state of being in the vehicle is the communication state outside the vehicle.

  Antennas 201-4A and 201-4B are antennas for the left rear seat, and are installed near the left rear seat of the vehicle. Among them, the antenna 201-4A is an antenna for in-car use, and it is easy to pick up (close to) the mobile phone 12 from the rear seat on the left side, and it is difficult to touch (close to) the outside of the car (in-vehicle). Installed at the communication location). The antenna 201-4 </ b> B is an antenna for outside the vehicle, and is installed at a position (external communication position) where the mobile phone 12 can be easily tucked (closed) from the left rear seat outside the vehicle. Therefore, for the left rear seat, the state where the antenna 201-4A is turned on and the antenna 201-4B is turned off is the in-vehicle communication state, the antenna 201-4B is turned on, and the antenna 201-4A is turned off. The state of being in the vehicle is the communication state outside the vehicle.

  Hereinafter, the antennas 201-1 </ b> A to 201-4 </ b> B are simply referred to as the antenna 201 when it is not necessary to distinguish them individually.

  The state in which the antenna 201 is turned on is a state in which the antenna 201 can be used. When the mobile phone 12 is turned (closed), the mobile phone 12 and the in-vehicle reader / writer are connected via the antenna 201. It is in a state where communication with 31 is possible. For example, a state where radio waves are periodically transmitted from the antenna 201 is a state where the antenna 201 is turned on. Conversely, the state in which the antenna 201 is turned off is a state in which the antenna 201 cannot be used. Even if the mobile phone 12 is turned over, the mobile phone 12 and the in-vehicle reader / writer 31 are not connected via the antenna 201. Communication is not possible. For example, a state where no radio wave is transmitted from the antenna 201 is a state where the antenna 201 is turned off.

  The switch 202 controls on / off of each antenna 201 based on the control of the CPU 71. The switch 202 relays between the antennas 201-1A to 201-4B and the CPU 71, the demodulation unit 74, and the modulation unit 75. Specifically, for example, the switch 202 supplies the modulated wave supplied from the modulation unit 75 to the antenna 201 used for communication with the mobile phone 12. Further, for example, the switch 202 supplies the modulation wave supplied from the antenna 201 to the demodulation unit 74.

  Further, for example, when communication is performed between the in-vehicle reader / writer 31 and the mobile phone 12, the switch 202 is information indicating the antenna 201 used for communication with the mobile phone 12, that is, the antenna 201- Information indicating which antenna 201 of 1A to 201-4B is used for communication with the mobile phone 12 is supplied to the CPU 71. For example, the switch 202 supplies the control signal to the antenna 201 supplied from the CPU 71 to the antenna 201 to be controlled.

  The switch 202 may be configured by hardware or may be configured by software.

  FIG. 8 is a block diagram illustrating an example of a functional configuration realized by the CPU 71 of the controller 61 of the in-vehicle reader / writer 31 of FIG. 7 executing a predetermined program. In the figure, portions corresponding to those in FIG. 4 are denoted by the same reference numerals in the last two digits, and description of portions having the same processing will be omitted because it will be repeated.

  When the CPU 71 executes a predetermined program, functions including the passenger monitoring unit 251, the state control unit 252, the power saving mode control unit 253, and the communication processing unit 254 are realized.

  The state control unit 252 controls on / off of each antenna 201 via the switch 202 based on information from the passenger monitoring unit 251. The state control unit 252 supplies information indicating the state of each antenna 201 to the power saving mode control unit 253 and the communication processing unit 254. Further, the state control unit 252 switches the driver seat interlock mode on / off setting based on a command input by the user via the input unit 64.

  The power saving mode control unit 253 controls the power saving mode of each of the antennas 201 for outside the vehicle according to the state of the antenna 201 for outside the vehicle, that is, the antennas 201-1B, 201-2B, 201-3B, and 201-4B. Control on / off of.

  The communication processing unit 254 performs communication processing with the mobile phone 12 through the antennas 201-1A to 201-4B, the switch 202, and the demodulator 74 or the modulation unit 75, thereby communicating with the mobile phone 12. Various information is sent and received between them. Further, the communication processing unit 254 transmits information to be transmitted to the mobile phone 12 as necessary via the in-vehicle network 41, the communication control unit 72, and the bus 81, the communication unit 33, the vehicle control unit 34, the car navigation system. The data is acquired from the device 35 or the audio device 36 or read from the storage unit 73 via the bus 81.

  In addition, the communication processing unit 254 acquires information indicating the antenna 201 used for communication with the mobile phone 12 from the switch 202. The communication processing unit 254 receives information received from the mobile phone 12 as necessary, together with the reception antenna information, via the bus 81, the communication control unit 72, and the in-vehicle network 41, the communication unit 33, the vehicle control unit 34. To the car navigation device 35 or the audio device 36.

  Further, the communication processing unit 254 performs various processes on information transmitted to the mobile phone 12 and information received from the mobile phone 12 as necessary.

  Next, the process of the vehicle-mounted system 11 using the vehicle-mounted reader / writer 31 of 2nd Embodiment is demonstrated.

  First, the antenna control process executed by the in-vehicle reader / writer 31 according to the second embodiment will be described with reference to the flowchart of FIG. This process is always performed when power is supplied to the in-vehicle reader / writer 31, for example, regardless of whether or not a motor (for example, an engine) of the own vehicle is started.

  In step S <b> 51, the passenger monitoring unit 251 determines whether there is a seat where a passenger is newly detected based on information from the passenger detection units 32-1 to 32-4. When the passenger monitoring unit 251 determines that there is a seat from which a new passenger is detected, the passenger monitoring unit 251 supplies information indicating the seat from which the passenger has been detected to the state control unit 252 and the process proceeds to step S52. .

  In step S52, the state control unit 252 sets the seat antenna 201 from which the passenger is newly detected to the in-vehicle use state. Specifically, the state control unit 252 controls the switch 202 to turn on the in-vehicle antenna 201 and turn off the out-of-vehicle antenna 201 among the seat antennas 201 in which the passengers are newly detected. To. The state control unit 252 supplies information indicating that the seat antenna 201 has been switched to the in-vehicle communication state to the power saving mode control unit 253 and the communication processing unit 254.

  In step S53, it is determined whether the driver's seat antenna 201 is set to the in-vehicle communication state, and it is determined that the driver's seat antenna 201 is set to the in-vehicle communication state, as in the process of step S3 of FIG. If so, the process proceeds to step S54.

  In step S54, as in the process of step S4 of FIG. 5, it is determined whether the driver seat interlocking mode is set. If it is determined that the driver seat interlocking mode is set, the process proceeds to step S55.

  In step S55, the state control unit 252 sets the antenna 201 for seats other than the driver's seat to the in-vehicle communication state. That is, the state control unit 252 controls the switch 202 to turn on the in-vehicle antenna 201 and turn off the out-of-vehicle antenna 201 for all seats other than the driver's seat. Of course, the seat in which the in-vehicle antenna 201 is already on and the outside antenna 201 is off is kept as it is. Thereafter, the process proceeds to step S61.

  On the other hand, if it is determined in step S54 that the driver seat interlock mode is not set, the process of step S55 is skipped, and the process proceeds to step S61.

  If it is determined in step S53 that the antenna 201 for a seat other than the driver's seat has been set to the in-vehicle communication state, the processes in steps S54 and S55 are skipped, and the process proceeds to step S61.

  Furthermore, when it is determined in step S51 that there is no seat where a passenger is newly detected, the process proceeds to step S56.

  In step S56, the occupant monitoring unit 251 determines whether there is a seat with no occupants based on information from the occupant detection units 32-1 to 32-4. When the passenger monitoring unit 251 determines that there is a seat that has no passengers among the seats that have been present so far, the passenger monitoring unit 251 supplies information indicating the seats in which the passenger has disappeared to the state control unit 252, and the processing is performed. Proceed to step S57.

  In step S57, as in the process of step S7 of FIG. 5, it is determined whether there are no passengers in the driver's seat. If it is determined that there are no passengers in seats other than the driver's seat, the process proceeds to step S58.

  In step S58, similarly to the process of step S54, it is determined whether the driver seat interlocking mode is set. If it is determined that the driver seat interlocking mode is set, the process proceeds to step S59.

  In step S59, similarly to the process of step S9 of FIG. 5, it is determined whether the driver's seat antenna 201 is set to the in-vehicle communication state, and if the driver's seat antenna 201 is not set to the in-vehicle communication state. If it is determined, the process proceeds to step S60.

  On the other hand, if it is determined in step S58 that the driver seat interlocking mode is not set, the process of step S59 is skipped, and the process proceeds to step S60.

  If it is determined in step S57 that there are no passengers in the driver's seat, the processes in steps S58 and S59 are skipped, and the process proceeds to step S60.

  In step S <b> 60, the state control unit 252 sets the seat antenna 201 that has no passengers to the out-of-vehicle communication state. Specifically, the state control unit 252 controls the switch 202 to turn on the outside antenna 201 and turn off the in-vehicle antenna 201 among the seating antennas 201 in which no passengers are present. The state control unit 252 supplies information indicating that the seat antenna 201 has been switched to the vehicle exterior communication state to the power saving mode control unit 253 and the communication processing unit 254. Thereafter, the process proceeds to step S61.

  On the other hand, if it is determined in step S59 that the driver's seat antenna 201 is set to the in-vehicle communication state, the process of step S60 is skipped, and the process proceeds to step S61.

  If it is determined in step S56 that there is no seat where the passenger is no longer present, the processes in steps S57 to S60 are skipped, and the process proceeds to step S61.

  In step S61, the power saving mode control unit 253 determines whether there is an antenna 201 for which a predetermined time has elapsed since turning on. If it is determined that there is an external antenna 201 for which a predetermined time (for example, 10 minutes) has passed since the switch was turned on, the process proceeds to step S62.

  In step S62, the antenna 201 is set to the power saving mode in the same manner as in step S12 of FIG. Thereafter, the process returns to step S51, and the processes after step S51 are executed.

  On the other hand, if it is determined in step S61 that there is no antenna 201 for which a predetermined time has elapsed since it was turned on, the process returns to step S51, and the processes after step S51 are executed.

  The vehicle control process executed by the in-vehicle system 11 using the in-vehicle reader / writer 31 of the second embodiment is the same as the process described above with reference to FIG. To do.

  As described above, in the second embodiment of the present invention, since the antenna 201 does not move mechanically, the antenna 201 can interfere with the occupant, or the state of the antenna 201 can be changed due to a failure of the drive part. It is prevented from disappearing.

  In addition, for each seat, two antennas 201 for the vehicle and for the vehicle outside are provided, but only one is turned on, and both are not turned on at the same time, so the processing is simplified. Can reduce the size and load of software. In addition, power consumption can be reduced.

  In the above description, an example is shown in which an antenna is provided in each seat in the vehicle. However, an antenna is not necessarily provided in each seat, and an antenna may be provided only in a necessary seat such as a driver's seat. When only one seat is provided with an antenna, information indicating which seat antenna is used for communication with the mobile phone 12 need not be included in the reception antenna information.

  In the above description, a vehicle having a driver's seat, a passenger seat, and left and right rear seats has been described. Of course, the present invention is also applicable to a case where the vehicle-mounted system 11 is provided in a vehicle having other seat configurations. It is possible to apply. In that case, the number of antennas and the installation position are appropriately changed in accordance with the increase or decrease of the seat.

  In the above description, in the second embodiment of the present invention, an example in which two antennas are provided in each seat has been described. However, three or more antennas may be provided, or in-vehicle communication state and in-vehicle communication state. Only one seat that does not need to be switched may be provided.

  Furthermore, based on the antenna that has received information from the mobile phone 12 and only the state of the antenna, the process executed in the device subsequent to the in-vehicle reader / writer 31 is controlled, and there is no particular need for a command from the user. Only the reception antenna information may be output from the in-vehicle reader / writer 31.

  Furthermore, for example, when there is a seat that uses the non-contact IC card function for vehicles only in the vehicle, or a seat that uses the non-contact IC card function for vehicles only from outside the vehicle, the state of the antenna is set in the vehicle for those seats. You may make it fix to a communication state or a communication state outside a vehicle. For example, in the case of a two-door vehicle, since it is not necessary to release the door lock for the rear seat, it is assumed that the vehicle non-contact IC card function is used only from the inside of the vehicle.

  In the above description, the driver seat mode in which the state of the other antenna is linked to the state of the antenna in the driver seat has been described. However, a mode that is linked to a seat other than the driver seat can be provided.

  Furthermore, it is possible to provide a mode in which any of the seat antennas in the vehicle is set to the in-vehicle communication state regardless of which seat antenna is set to the in-vehicle communication state. is there.

  Further, in the above description, when the driver's seat interlock mode is set, only when the driver's seat antenna is set to the in-vehicle communication state, the other seat antennas are set to the in-vehicle communication state. However, when the driver's seat antenna is set to the vehicle communication state, the other seat antennas may be set to the vehicle communication state.

  Further, for the seat where the passenger is detected, when the door handle of the seat is gripped from the outside, the antenna for the seat may be temporarily switched from the in-vehicle communication state to the out-vehicle communication state. .

  As described above, it is desirable to suppress the power consumption of the in-vehicle reader / writer 31 when the host vehicle is stopped and the battery is not charged. As a countermeasure, for example, a mobile phone or a person may be detected using a sensor with low power consumption, and the in-vehicle reader / writer 31 may be activated when a mobile phone or a person is detected. . A sensor with low power consumption is, for example, a capacitive object sensor or an object sensor that emits radio waves as impulses and detects them with reflected waves, and is a sensor that consumes less power than when the in-vehicle reader / writer 31 is on standby. is there. Thereby, power consumption can be suppressed.

  In addition, a receiving device that receives radio waves transmitted from a mobile phone is provided in the in-vehicle reader / writer 31 using a communication method that consumes less power than communication by a non-contact IC card. Turn off the power of the part related to the proximity communication function of the IC card, and when the radio wave is received from the mobile phone, turn on the power of the part related to the proximity communication function of the non-contact IC card to perform the proximity communication You may do it.

  Furthermore, in the above description, a mobile phone is given as an example of a terminal for using the vehicle non-contact IC card function. However, in the embodiment of the present invention, the functions of the non-contact IC card other than the mobile phone are described. It is possible to use the possessed device as a use terminal.

  Further, in the second embodiment of the present invention, it is conceivable that the outside antenna is installed not on the vehicle but on the other end via wireless communication or power line communication. For example, if a cable for charging a vehicle parked at home is plugged into a household power source and communication between the computer at home and the vehicle is established by power line communication, the antenna of the reader / writer installed in the computer It is conceivable to perform the same processing as in the case where the mobile phone 12 is held by the mobile phone antenna provided on the vehicle.

  The series of processes described above can be executed by hardware or can be executed by software. The program executed by the computer may be a program that is processed in time series in the order described in this specification, or in parallel or at a necessary timing such as when a call is made. It may be a program for processing.

  Further, in the present specification, the term “system” means an overall apparatus composed of a plurality of apparatuses and means.

  Furthermore, the embodiments of the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

It is a block diagram which shows one Embodiment of the vehicle-mounted system to which this invention is applied. It is a block diagram which shows the example of a functional structure of a vehicle-mounted reader / writer. It is a figure which shows the example of a structure of an antenna part. It is a block diagram which shows the example of a structure of the function implement | achieved when CPU of a vehicle-mounted reader / writer runs a predetermined program. It is a flowchart for demonstrating an antenna control process. It is a flowchart for demonstrating a vehicle control process. It is a block diagram which shows 2nd Embodiment of a vehicle-mounted reader / writer. It is a block diagram which shows 2nd Embodiment of the structure of the function implement | achieved when CPU of a vehicle-mounted reader / writer executes a predetermined program. It is a flowchart for demonstrating an antenna control process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 In-vehicle system 12 Mobile phone 31 In-vehicle reader / writer 32-1 thru | or 32-4 Passenger detection part 33 Communication part 34 Vehicle control part 35 Car navigation apparatus 36 Audio apparatus 61 Controller 62 Antenna part 63 Relay part 71 CPU
DESCRIPTION OF SYMBOLS 101 Antenna 102 Shaft 103 Motor 151 Passenger monitoring part 152 State control part 153 Power saving mode control part 154 Communication processing part 201 Antenna 202 Switch 251 Passenger monitoring part 252 State control part 253 Power saving mode control part 254 Communication processing part

Claims (9)

In an in-vehicle communication device that performs proximity communication with a communication terminal via an antenna,
Based on the presence or absence of a passenger in the vehicle, the communication terminal in the vehicle is in a state suitable for close proximity communication by bringing the communication terminal close to the antenna, and the communication terminal from the outside of the vehicle. A state control means for switching between an external communication state which is a state suitable for close proximity communication in the proximity of the antenna;
An output unit that outputs information indicating whether the communication with the communication terminal is performed in the in-vehicle communication state or the in-vehicle communication state. The antenna is provided near each of a plurality of seats in the vehicle,
The state control means is in a state suitable for close proximity communication based on the presence or absence of a passenger near the seat provided with the antenna and bringing the communication terminal close to the antenna from the seat. 2. The communication according to claim 1, wherein the communication state is switched between an in-vehicle communication state and the out-of-vehicle communication state that is suitable for performing proximity communication by bringing the communication terminal close to the antenna from the seat side outside the vehicle. apparatus. The communication device according to claim 2, wherein the output unit further outputs information indicating which seat is used for communication with the communication terminal via the antenna. In response to the setting, the state control means switches the antenna for the driver's seat of the vehicle to the in-vehicle communication state, and the antenna for a seat different from the driver's seat is also in the in-vehicle communication state. The communication device according to claim 2 to be switched. The communication apparatus according to claim 1, further comprising: a power saving mode setting unit configured to set the antenna that has passed a predetermined time since being switched to the outside communication state to a power saving mode that reduces power consumption of the antenna. The antenna is an in-vehicle antenna installed at a position where the communication terminal can be easily approached in the vehicle, and a vehicle installed at a position where the communication terminal can be easily approached from the outside of the vehicle. Consists of an external antenna,
The communication apparatus according to claim 1, wherein the state control unit switches between the in-vehicle communication state in which the in-vehicle antenna is usable and the out-of-vehicle communication state in which the in-vehicle antenna is usable. The communication device according to claim 1, wherein the state control unit switches between the in-vehicle communication state and the out-vehicle communication state by controlling the position of the antenna. In a communication control method for an in-vehicle communication device that performs proximity communication with a communication terminal via an antenna,
Based on the presence or absence of a passenger in the vehicle, the communication terminal in the vehicle is in a state suitable for close proximity communication by bringing the communication terminal close to the antenna, and the communication terminal is connected from the outside of the vehicle. A state control step for switching between a communication state outside the vehicle, which is a state suitable for close proximity communication in the proximity of the antenna;
An output step of outputting information indicating whether communication with the communication terminal is performed in the in-vehicle communication state or the out-of-vehicle communication state. In a program that causes a computer of a vehicle-mounted communication device that performs proximity communication with a communication terminal via an antenna to execute processing,
Based on the presence or absence of a passenger in the vehicle, the communication terminal in the vehicle is in a state suitable for close proximity communication by bringing the communication terminal close to the antenna, and the communication terminal is connected from the outside of the vehicle. A state control step of switching between an external vehicle communication state which is a state suitable for close proximity communication close to the antenna;
A program for executing a process including: an output step of outputting information indicating whether communication is performed with the communication terminal in the in-vehicle communication state or the out-of-vehicle communication state.

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