JP2019043160A - Control system for vehicle - Google Patents

Abstract

To provide a control system for a vehicle that can provide a notification of an occupant remaining in a vehicle in a case where a person is detected when a door lock operation of the vehicle is performed.SOLUTION: A control system for a vehicle is configured to enable vehicle operation via radio communication between a portable machine and an on-vehicle machine. The control system includes a sensor configured to detect an occupant in a vehicle cabin and a communication device configured to transmit a second signal from the vehicle cabin to the on-vehicle machine in a case where a first signal is received from the on-vehicle machine while a person is being detected by the sensor. The on-vehicle machine sends the first signal when a door lock operation of a vehicle is performed. When receiving the second signal from the communication device, the on-vehicle machine issues a predetermined alarm by using at least one of a machine mounted in the vehicle and the portable machine.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a control system for a vehicle capable of operating a vehicle via wireless communication between an electronic key and a vehicle.

  For example, Patent Document 1 discloses a vehicle control system in which an electronic key carried by a user and a device mounted on a vehicle perform wireless communication to execute a door lock / door unlock operation and the like of the vehicle. There is.

  In the vehicle control system described in Patent Document 1, when a person is detected in the vehicle compartment when the door lock operation is performed by the electronic key, it is known from the vehicle that the passenger remains in the vehicle from the vehicle to the wireless relay station. The electronic key is notified via

JP, 2006-062622, A

  However, in the vehicle control system described in Patent Document 1 described above, since it is necessary to relay the communication between the vehicle and the electronic key by the wireless relay station, if a problem occurs in the wireless relay, the communication is interrupted and the vehicle occupant Can not be notified to the electronic key that the Therefore, there is a possibility that a person may be trapped in the vehicle compartment.

  The present invention has been made in view of the above problems, and when a person is detected in a vehicle compartment when a door lock operation of the vehicle is performed, it is notified that a passenger remains in the vehicle. It is an object of the present invention to provide a vehicle control system that can

  In order to solve the above-mentioned subject, one mode of the present invention is a control system for vehicles which enables operation of vehicles via wireless communications between a portable machine and an in-vehicle machine, and detects a person who is in a car interior And a communication device for transmitting a second signal from the vehicle compartment to the in-vehicle device when the first signal is received from the in-vehicle device while a person is detected by the sensor; When the door lock operation is performed, the first signal is transmitted, and when the second signal is received from the communication device, a predetermined alarm is performed using at least one of the device mounted on the vehicle and the portable device. Do.

  In this aspect of the present invention, if the sensor detects that a person is in the vehicle compartment, the communication device transmits a second signal from the vehicle compartment to the search for the portable device using the first signal by the in-vehicle device. Make a response using.

  By this control, the communication device in the vehicle cabin can behave like a portable device only while a person is detected by the sensor. Therefore, when the door lock operation of the vehicle is performed, it is possible to notify that the occupant remains in the vehicle by using the function of preventing the portable device from being locked in the vehicle. As a result, it is possible to suppress the possibility that a person is trapped in the vehicle compartment.

  According to the vehicle control system of the present invention, when a person is detected in the vehicle compartment when the door lock operation of the vehicle is performed, it is possible to notify that the occupant remains in the vehicle.

The figure explaining schematic structure of the control system for vehicles concerning a 1st embodiment. Flow chart of control executed by the communication apparatus of FIG. 1 Flow chart of control executed by the onboard unit of FIG. 1 The figure explaining schematic structure of the control system for vehicles concerning a 2nd embodiment Flow chart of control executed by the communication apparatus of FIG. 4 Flow chart of control executed by the on-vehicle device of FIG. 4

[Overview]
The control system for a vehicle according to the present invention transmits a signal indicating that a portable device is present in the vehicle compartment to the on-vehicle device while the sensor detects that a person is in the vehicle interior. As a result, even when the door lock operation of the vehicle is performed, notification for prevention of confinement is performed, so that the possibility of a person being confined in the vehicle compartment can be suppressed.

  The vehicle control system described in the present embodiment performs authentication using an identifier (ID) unique to a key between an on-vehicle device and a portable device (a portable terminal such as an electronic key dedicated to a vehicle or a smartphone). A so-called smart function is used to realize predetermined vehicle control (door lock / unlock of the vehicle, engine start, etc.) that does not require mechanical key operation.

  In this smart function, when a vehicle operation requiring vehicle control is performed by a user or the like, predetermined wireless communication necessary for authentication processing is performed between the on-vehicle device and the portable device, and the portable device is authenticated by the on-vehicle device By means of (identifier verification OK), vehicle control depending on the position where the portable device is present, that is, whether it is inside or outside the vehicle is permitted.

First Embodiment
<Configuration>
FIG. 1 is a diagram for explaining a schematic configuration of a control system 1 for a vehicle according to a first embodiment of the present invention. In FIG. 1, the vehicle control system 1 according to the first embodiment is configured in a vehicle, and includes an on-vehicle device 10, a communication device 20, an operation detection unit 30, and a human detection sensor 40. The in-vehicle apparatus 10 includes a transmitter 11, a receiver 12, a controller 13, and an alarm unit 14. The communication device 20 includes a transmitter 21, a receiver 22, a controller 23, and a battery 24.

  The operation detection unit 30 can detect a door lock operation performed on the vehicle using a door handle provided on the vehicle, an operation button of a portable device (not shown in the present embodiment), or the like.

  The transmission unit 11 of the in-vehicle device 10 can transmit a signal necessary for the authentication process to an area in the vehicle cabin at a predetermined timing. The predetermined timing includes the timing at which the door lock operation is performed on the vehicle detected by the operation detection unit 30. A signal required for the authentication process (hereinafter referred to as "first signal") is a signal for requesting the communication device 20 or the portable device to return a response signal, and an identification code capable of uniquely identifying the on-vehicle device 10 Is also attached. The first signal may be, for example, an LF signal transmitted by low frequency communication.

  The receiver 12 of the in-vehicle device 10 can receive the response signal transmitted from the communication device 20 or the portable device in the vehicle compartment.

  The control unit 13 of the in-vehicle apparatus 10 processes the response signal received by the receiving unit 12. More specifically, the control unit 13 performs processing for authenticating that the response signal has been transmitted from the legitimate communication device 20 or the portable device, or a predetermined signal for which the authentication signal has been successfully transmitted. A process is performed to determine whether or not the response signal (hereinafter referred to as the "second signal"). The second signal will be described later. Then, when the response signal for which the authentication is successful is the second signal, the control unit 13 instructs the alarm performing unit 14 to perform a predetermined alarm.

  The alarm implementation unit 14 of the in-vehicle device 10 implements a predetermined alarm according to the instruction of the control unit 13. In this alarm, for example, a special alarm which is issued when there is a possibility that a person may be confined in the vehicle compartment, and a normal alarm (smart function which is issued when there is a possibility that a portable device is confined in the vehicle compartment) Two types of warning can be provided.

  The alarm by the alarm implementation unit 14 may be an auditory implementation that generates a sound such as a buzzer, a visual implementation that generates light such as a hazard lamp, or a tactile implementation such as vibration by a vibrator . Further, the alarm may be performed by a device mounted on a predetermined vehicle including the on-vehicle device 10, or may be performed by a portable device carried by the user.

  The human detection sensor 40 is a sensor mechanism that can detect a person in the vehicle compartment. For example, as the human detection sensor 40, a pressure sensor, an electrostatic sensor, a heat sensor, an image sensor, or the like can be used.

  The receiving unit 22 of the communication device 20 can receive the first signal transmitted from the on-vehicle device 10. The reception unit 22 notifies the control unit 23 that the first signal has been received.

  The control unit 23 of the communication device 20 controls, based on the detection result of the human detection sensor 40, whether to activate a function (so-called smart function) capable of wireless communication with the on-vehicle device 10 in the communication device 20. More specifically, the control unit 23 activates the wireless communication function of the communication device 20 during a period when a person is detected by the person detection sensor 40, and the period during which a person is not detected by the person detection sensor 40, The wireless communication function of the communication device 20 is stopped.

  The wireless communication function of the communication device 20 may be stopped by stopping the reception function of the first signal by the reception unit 22 or by stopping the transmission function of the second signal by the transmission unit 21. You may do by stopping both functions. The stop of the function can be performed, for example, by shutting off the power supply from the battery 24.

  Further, the control unit 23 determines whether the first signal received by the receiving unit 22 is a normal signal. This determination can be made by determining the identification code of the on-vehicle device 10 attached to the first signal.

  In response to the reception of the normal first signal from the control unit 23, the transmission unit 21 of the communication device 20 generates a second signal in which a predetermined bit is set in a spare area in the response signal, and generates the second signal. The second signal is transmitted to a predetermined area. An arrangement has been made with the on-vehicle device 10 in advance about what bit is to be set in which region. The second signal may be, for example, an RF signal transmitted by radio frequency communication.

  The battery 24 of the communication device 20 is a power supply that supplies power to the components of the transmission unit 21, the reception unit 22, and the control unit 23 of the communication device 20.

  Note that all or part of the on-vehicle device 10 described above typically includes an electronic control unit (ECU) including a central processing unit (CPU), a memory, and an input / output interface. Can be configured as In the electronic control unit, a predetermined function is realized by the CPU reading and executing a predetermined program stored in the memory.

<Control>
Next, the control executed by the vehicle control system 1 according to the first embodiment will be described with further reference to FIGS. 2 and 3. FIG. 2 is a flowchart of control executed by the communication device 20. FIG. 3 is a flowchart of control executed by the on-vehicle apparatus 10.

  First, the control of FIG. 2 will be described. Control by the communication device 20 shown in FIG. 2 is started by detecting a person in the person detection sensor 40.

  Step S201: The control unit 23 activates the function of enabling the wireless communication with the on-vehicle device 10 in the communication device 20 (smart function ON). When the wireless communication function is activated, the process proceeds to step S202.

  Step S202: It is judged by the receiving part 22 whether or not the normal first signal corresponding to the door lock operation of the vehicle is received from the in-vehicle device 10. If the normal first signal corresponding to the door lock operation is received (S202, Yes), the process proceeds to step S203. On the other hand, when the regular first signal corresponding to the door lock operation is not received (S202, No), the process proceeds to step S204.

  Step S203: The transmission unit 21 generates a second signal in which a predetermined bit is set in the response signal, and the generated second signal is transmitted to the on-vehicle device 10. When the second signal is transmitted, the process proceeds to step S204.

  Step S204: The control unit 23 determines whether or not a person is detected by the person detection sensor 40. If a person is detected (S204, Yes), the process returns to step S202. If no person is detected (S204, No), the process proceeds to step S205.

  Step S205: The control unit 23 causes the communication device 20 to stop the function of enabling wireless communication with the on-vehicle device 10 (smart function is OFF). When the wireless communication function is stopped, this control ends.

  Next, the control of FIG. 3 will be described. The control by the on-vehicle device 10 shown in FIG. 3 is started when the operation detection unit 30 detects a door lock operation performed on the vehicle.

  Step S301: The transmitter 11 transmits a first signal corresponding to the door lock operation to the detection area in the vehicle compartment. When the first signal is transmitted, the process proceeds to step S302.

  Step S302: The receiving unit 12 determines whether the second signal is received. If the second signal is received (S302, Yes), the process proceeds to step S303. On the other hand, when the second signal is not received (S302, No), the process proceeds to step S306.

  Step S303: The control unit 13 determines whether a predetermined bit is set in the received second signal. If the predetermined bit is set (S303, Yes), the process proceeds to step S304. On the other hand, when the predetermined bit is not set (S303, No), the process proceeds to step S305.

  Step S304: The alarm implementation unit 14 implements a special alarm that is issued when there is a possibility that a person may be trapped in the vehicle compartment. When a special alarm is implemented, this control ends.

  Step S305: The alarm execution unit 14 carries out a normal alarm that is issued when there is a possibility that the portable device will be trapped in the vehicle compartment. When a normal alarm is implemented, this control ends.

  Step S306: The door lock control unit (not shown) implements door lock of the vehicle. When the door lock is implemented, this control ends.

<Operation and effect>
As described above, in the vehicle control system 1 according to the first embodiment of the present invention, when the door lock operation is detected in the operation detection unit 30, a person is present in the vehicle compartment by the human detection sensor 40. If it is detected, in response to the search of the portable device using the first signal by the on-vehicle device 10, the communication device 20 responds from the vehicle interior using the second signal in which the predetermined bit is set.

  With this control, the on-vehicle device 10 recognizes that the device (the communication device 20 or the portable device) that sends the second signal back is present in the vehicle compartment, and thus, the door lock operation is detected. An alert can be implemented. In particular, since a predetermined bit is set in the second signal transmitted by the communication device 20, the on-vehicle device 10 determines the presence or absence of the predetermined bit and transmits a special message indicating that an occupant remains in the vehicle. An alert can be implemented. As a result, it is possible to suppress the possibility that a person is trapped in the vehicle compartment.

Second Embodiment
<Configuration>
FIG. 4 is a view for explaining a schematic configuration of a vehicle control system 2 according to a second embodiment of the present invention. In FIG. 4, the vehicle control system 2 according to the second embodiment is configured in a vehicle, and includes an on-vehicle device 50, a communication device 60, an operation detection unit 30, and a human detection sensor 40.

  The vehicle control system 2 is different from the vehicle control system 1 according to the first embodiment in that the control unit 55 and the storage unit 56 of the in-vehicle device 50, and the transmission unit 65 and the storage unit 66 of the communication device 60. Is different. The following description will be made focusing on this different configuration, and the description will be partially omitted for configurations having the same reference numerals.

  The storage unit 56 of the in-vehicle device 50 stores a unique identifier assigned in advance to a legitimate portable device (not shown in the present embodiment) for which vehicle control is permitted. The storage unit 56 also stores a unique identifier assigned to the communication device 60 in advance.

  The control unit 55 of the in-vehicle device 50 processes the response signal received by the receiving unit 12. More specifically, the control unit 55 performs a process of authenticating that the response signal has been transmitted from the normal communication device 60 or the portable device, or a process in which the communication device 20 transmits a response signal in which the authentication is successful. A process is performed to determine whether or not there are two signals. Then, when the response signal is the second signal, the control unit 55 instructs the alarm performing unit 14 to perform a predetermined alarm operation.

  The storage unit 66 of the communication device 60 stores a unique identifier assigned to the own device in advance.

  In response to the reception of the normal first signal from the control unit 23, the transmission unit 65 of the communication device 60 generates a second signal including the information of the identifier stored in the storage unit 66, and generates the second signal. The second signal is transmitted to a predetermined area.

<Control>
Next, the control executed by the vehicle control system 2 according to the second embodiment will be described with further reference to FIGS. 5 and 6. FIG. 5 is a flowchart of control executed by the communication device 60. FIG. 6 is a flowchart of control performed by the on-vehicle device 50.

  First, the control of FIG. 5 will be described. Control by the communication device 60 shown in FIG. 5 is started when a person is detected by the person detection sensor 40.

  Step S501: The control unit 23 activates a function that allows wireless communication with the on-vehicle device 10 in the communication device 60 (smart function ON). When the wireless communication function is activated, the process proceeds to step S502.

  Step S502: It is judged by the receiving unit 22 whether or not the normal first signal has been received from the in-vehicle device 50. If the normal first signal is received (S502, Yes), the process proceeds to step S503. On the other hand, when the normal first signal is not received (S502, No), the process proceeds to step S504.

  Step S503: The transmission unit 65 generates a second signal including the information on the identifier of the communication device 60, and the generated second signal is transmitted to the on-vehicle device 50. When the second signal is transmitted, the process proceeds to step S504.

  Step S504: The control unit 23 determines whether or not a person is detected by the person detection sensor 40. If a person is detected (S504, Yes), the process returns to step S502. If a person is not detected (S504, No), the process proceeds to step S505.

  Step S505: The control unit 23 causes the communication device 60 to stop the function capable of wireless communication with the in-vehicle device 50 (smart function is OFF). When the wireless communication function is stopped, this control ends.

  Next, the control of FIG. 6 will be described. The control by the in-vehicle device 50 shown in FIG. 6 is started when the operation detection unit 30 detects a door lock operation performed on the vehicle.

  Step S601: The transmitter 11 transmits a first signal corresponding to the door lock operation to the detection area in the vehicle compartment. When the first signal is transmitted, the process proceeds to step S602.

  Step S602: The receiver 12 determines whether the second signal has been received. If the second signal is received (S602, Yes), the process proceeds to step S603. On the other hand, when the second signal is not received (S602, No), the process proceeds to step S607.

  Step S603: The control unit 55 compares the identifier contained in the second signal with the identifier stored in the storage unit 56. When the comparison of the identifiers is performed, the process proceeds to step S604.

  Step S604: Based on the comparison result, the control unit 55 determines whether the second signal has been transmitted from the communication device 60 or not. If the second signal is transmitted from the communication device 60 (S604, Yes), the process proceeds to step S605. On the other hand, when the second signal is not transmitted from the communication device 60 (S604, No), the process proceeds to step S606.

  Step S605: The alarm implementation unit 14 implements a special alarm that is issued when there is a possibility that a person may be trapped in the vehicle compartment. When a special alarm is implemented, this control ends.

  Step S606: The alarm implementation unit 14 implements a normal alarm that is issued when there is a possibility that the portable device may be trapped in the vehicle compartment. When a normal alarm is implemented, this control ends.

  Step S607: The door lock control unit (not shown) implements door lock of the vehicle. When the door lock is implemented, this control ends.

<Operation and effect>
As described above, in the vehicle control system 2 according to the second embodiment of the present invention, when the operation detection unit 30 detects a door lock operation, there is a person in the vehicle compartment by the person detection sensor 40 If detected, in response to the search of the portable device using the first signal by the in-vehicle device 50, the communication device 60 from the vehicle interior responds using the second signal including its own identifier information.

  By this control, the on-vehicle device 50 can recognize that the communication device 60 is present in the vehicle compartment by determining the identifier, so that the alarm can be performed on the detected door lock operation. In particular, the in-vehicle device 50 can implement different alarms depending on the identifier. As a result, it is possible to suppress the possibility that a person is trapped in the vehicle compartment.

[Others]
The present invention can be realized only by adding the human detection sensor 40 and the communication device 20 or 60 to an existing system capable of remote control between an electronic key and a vehicle via wireless communication. Therefore, there is an advantage that the installation structure is simple and the installation cost is low.

  In addition, the human detection sensor 40 connected to the communication device 20 or 60 does not have to be fixed to the vehicle, and may be embedded in, for example, a cushion covering a seat surface of a seat (vehicle seat or removable child seat) it can. In this case, if the communication device 20 or 60 is also incorporated in the cushion, the convenience is improved.

  The vehicle control system of the present invention can be used for a vehicle equipped with a system capable of remote control via wireless communication between an electronic key and a vehicle.

1, 2 Vehicle control system 10, 50 In-vehicle device 11, 21, 65 Transmission unit 12, 22 Reception unit 13, 23, 55 Control unit 14 Alarm execution unit 24 Battery 20, 60 Communication device 30 Operation detection unit 40 Person detection sensor 56, 66 storage unit

Claims (1)

A control system for a vehicle that enables vehicle operation via wireless communication between a portable device and an in-vehicle device, comprising:
A sensor that detects people in the car,
A communication device for transmitting a second signal from a vehicle interior to the in-vehicle device when the first signal is received from the in-vehicle device while a person is detected by the sensor;
The in-vehicle device is
When the door lock operation of the vehicle is performed, the first signal is transmitted,
When the second signal is received from the communication device, a predetermined alarm is performed using at least the device mounted on the vehicle and the portable device.
Vehicle control system.

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