JP2018032901A - In-vehicle / outside determination system for wireless communication device, in-vehicle / outside determination device for wireless communication device, and in-vehicle / outside determination control program - Google Patents

Abstract

An object of the present invention is to accurately determine whether a wireless communication device is inside or outside a vehicle by using hardware resources of the wireless communication device. As shown in (1-1) of FIG. 1, for a wireless communication device 102-1, an in-vehicle / outside determination device 101 notifies an in-vehicle / outside determination request to the wireless communication device 102 by short-range wireless communication. . When the vehicle inside / outside determination device 101 receives a response to the vehicle inside / outside determination request, as shown by (2) in FIG. The wireless communication device 102-1 measures the intensity of the generated magnetic field with the magnetic sensor 112-1, and as shown by (3-1) in FIG. 101. [Selection] Figure 1

Description

  The present invention relates to a vehicle inside / outside determination system for a wireless communication device, a vehicle inside / outside determination device for a wireless communication device, and a vehicle inside / outside determination control program.

  2. Description of the Related Art Conventionally, there is a technique for performing in-vehicle / out-of-vehicle determination for determining whether any device is inside or outside a vehicle. As related prior art, for example, when the movement of the portable device itself is sensed after getting off and the movement of the portable device is detected, the door is locked, and when the movement of the portable device is not detected In some cases, the user unlocks the door as having gone out of the vehicle without carrying the portable device. In addition, the mobile phone displays the image data transmitted from the vehicle wireless antenna on the touch panel, the controller captures the display image of the mobile phone, and the image authentication performed by comparing the transmitted image and the captured image is established. Then, there is a technique for determining that the mobile phone is in the car.

JP 2014-152458 A JP 2014-192724 A

  However, according to the prior art, when the in-vehicle / outside determination of the wireless communication device is performed using the hardware resources of the wireless communication device such as the smart device that the user always wears, the accuracy of the determination result deteriorates. Sometimes. For example, when the inside / outside determination is performed using the measurement value of the gyro sensor of the wireless communication device as the motion detection, the user's operation when getting off affects the measurement value of the gyro sensor. Depending on the vehicle, it is not regarded as getting off, and the accuracy of the inside / outside determination is deteriorated.

  In one aspect, the present invention relates to an in-vehicle / out-of-vehicle determination system for a wireless communication device and an in-vehicle / outside of a wireless communication device that can accurately determine the inside / outside of the wireless communication device using hardware resources of the wireless communication device. It is an object of the present invention to provide a determination device and a vehicle inside / outside determination control program.

  According to one aspect of the present invention, a wireless communication device having a magnetic sensor and a vehicle interior / exterior determination device are connected by short-range wireless communication, and the vehicle interior / exterior determination device is connected to a coil installed inside the vehicle. If the wireless communication device is notified of the vehicle inside / outside determination request by short-range wireless communication and receives a response to the vehicle inside / outside determination request from the wireless communication device, a current flows through the coil, and the wireless communication device In-vehicle / out-of-vehicle determination system for a wireless communication device that notifies the in-vehicle / outside determination device by short-range wireless communication of a measurement result obtained by measuring the intensity of a magnetic field generated by flowing the air, and A vehicle inside / outside determination control program is proposed.

  According to one embodiment of the present invention, there is an effect that it is possible to accurately determine whether a wireless communication device is in or out of a vehicle using hardware resources of the wireless communication device.

FIG. 1 is an explanatory diagram illustrating an operation example of the inside / outside determination system 100 according to the embodiment. FIG. 2 is an explanatory diagram illustrating a configuration example of the inside / outside determination system 200 in the first embodiment. FIG. 3 is an explanatory diagram illustrating an example of installation positions of the coil antenna and the magnetic sensor in the vehicle V according to the first embodiment. FIG. 4 is an explanatory diagram illustrating a hardware configuration example in the vehicle V according to the first embodiment. FIG. 5 is an explanatory diagram illustrating a hardware configuration example of the smart device 202 according to the first embodiment. FIG. 6 is an explanatory diagram illustrating a functional configuration example of the in-vehicle / out-of-vehicle determination system 200. FIG. 7 is an explanatory diagram (part 1) illustrating an example of calculating the necessary pulse current from the magnetic sensor resolution. FIG. 8 is an explanatory diagram (part 2) illustrating an example of calculating the necessary pulse current from the magnetic sensor resolution. FIG. 9 is an explanatory diagram illustrating an example of a measured value of the magnetic field strength when the smart device 202 is outside the vehicle V. FIG. 10 is an explanatory diagram illustrating an example of a measured value of the magnetic field strength when the smart device 202 is inside the vehicle V. FIG. 11 is an explanatory diagram showing an example of the inside / outside determination sequence when the smart device 202 is outside the vehicle V. FIG. 12 is an explanatory diagram showing an example of the inside / outside determination sequence when the smart device 202 is inside the vehicle V. FIG. 13 is a flowchart (part 1) illustrating an example of a vehicle inside / outside determination processing procedure according to the first embodiment. FIG. 14 is a flowchart (part 2) illustrating an example of the vehicle inside / outside determination processing procedure according to the first embodiment. FIG. 15 is a flowchart illustrating an example of a getting-off determination processing procedure. FIG. 16 is a flowchart showing an example of the in-vehicle / outside determination processing procedure when the engine start button is pressed. FIG. 17 is an explanatory diagram illustrating a functional configuration example of the in-vehicle / outside determination system 1700 according to the second embodiment. FIG. 18 is an explanatory diagram illustrating an example of an installation position of the coil antenna 301 according to the second embodiment. FIG. 19 is an explanatory diagram illustrating a hardware configuration example in the vehicle V according to the second embodiment. FIG. 20 is an explanatory diagram illustrating an example of how the current flows in each coil antenna 301 in the second embodiment. FIG. 21 is an explanatory diagram illustrating a position calculation example of the smart device 1702 according to the second embodiment. FIG. 22 is an explanatory diagram showing an example in which the magnetic field strength of the coil antenna 301 exceeds the maximum measurement range of the magnetic sensor 509. FIG. 23 is an explanatory diagram showing an example of the magnetic field strength when the value of the current passed through the coil antenna 301 is lowered. FIG. 24 is an explanatory diagram showing a sequence for determining whether the smart device 1702 is outside the vehicle V. FIG. 25 is an explanatory diagram showing a sequence of inside / outside determination when the smart device 1702 is inside the vehicle V. FIG. 26 is an explanatory diagram showing a sequence of in-vehicle / out-of-vehicle determination when the smart device 1702 is outside the vehicle V and the exceptions 3-1 and 3-2 occur. FIG. 27 is an explanatory diagram showing a sequence of in-vehicle / out-of-vehicle determination when the smart device 1702 is inside the vehicle V and the exceptions 3-1 and 3-2 occur. FIG. 28 is a flowchart (No. 2) illustrating an example of the vehicle inside / outside determination processing procedure according to the second embodiment. FIG. 29 is a flowchart (part 3) illustrating an example of the vehicle inside / outside determination processing procedure according to the second embodiment. FIG. 30 is a flowchart (part 4) illustrating an example of the vehicle inside / outside determination processing procedure according to the second embodiment.

  DESCRIPTION OF EMBODIMENTS Embodiments of an in-vehicle / outside determination system for a wireless communication device, an in-vehicle / outside determination device for a wireless communication device, and an in-vehicle / outside determination control program will be described in detail below with reference to the drawings.

  FIG. 1 is an explanatory diagram illustrating an operation example of the inside / outside determination system 100 according to the embodiment. A vehicle inside / outside determination system 100 shown in FIG. 1 is a system for determining inside / outside the vehicle. Specifically, the vehicle inside / outside determination system 100 includes a vehicle inside / outside determination device 101 and a wireless communication device 102, and is a system that determines whether the wireless communication device 102 is inside or outside the vehicle V.

  Here, the vehicle V is a vehicle that is driven by the power of the prime mover. For example, the vehicle V includes a passenger car and a freight car. Conventionally, there is a function called keyless entry that can lock and unlock the door and trunk of the vehicle V and start the engine without using a mechanical key. Furthermore, in recent years, there is a function called smart entry that enables unlocking / locking only by approaching the vehicle or touching the door knob of the vehicle without pressing the unlocking / locking button of the electronic key. However, in smart entry, the user wears an electronic key when locking the door. For this reason, the user needs to carry the electronic key when driving.

  On the other hand, smart devices such as smartphones and smart watches are always worn. If these smart devices can be used in place of the above-described electronic keys, an electronic key becomes unnecessary, and the burden on the user is reduced, which makes it more convenient.

  Indispensable functions for using the smart device in place of the electronic key include a vehicle inside / outside determination function for determining whether the electronic key is in the vehicle or outside the vehicle, and a key authentication function. Here, in the electronic key, the electronic key and the vehicle generally perform bidirectional communication using LF (Low Frequency) waves / UHF (Ultra High Frequency) waves, thereby performing in-vehicle determination and key authentication. The inside / outside determination is realized by calculating the distance between several LF wave transceivers installed in the vehicle and the electronic key and estimating the position of the electronic key.

  However, since the smart device does not correspond to the frequency band (LF wave) adopted in the electronic key, the smart device has functions to realize in-car determination and key authentication. Here, the key authentication in the smart device can be realized by, for example, a vehicle and a short-range wireless communication function such as Bluetooth using Bluetooth (registered trademark) or the like that the smart device has. However, the in-vehicle / out-of-vehicle determination function in a smart device is difficult to implement because wireless communication such as Bluetooth has problems such as a large position measurement error and is easily affected by the human body.

  For example, a method for determining whether or not the vehicle has got off the vehicle based on the measured value of the gyro sensor of the smart device is considered as a method for realizing the inside / outside determination with the function built in the smart device other than the wireless communication function. It is done. However, in this method, since the operation when the user gets off affects the measurement value of the gyro sensor, it is not regarded as getting off depending on the way the user gets off, and it is expected that the accuracy of the inside / outside determination is deteriorated.

  In addition, for example, a method for determining inside / outside of a vehicle based on whether a smart device is placed at a specific position is conceivable. However, in this method, the smart device is placed at a specific position in the vehicle, which increases the burden on the user.

  Therefore, in the present embodiment, when the wireless communication device 102 such as a smart device approaches the vehicle V, a current is passed through a coil installed in the vehicle V, and the measurement result of the magnetic field strength measured by the wireless communication device 102 is measured inside and outside the vehicle. The notification to the determination apparatus 101 will be described.

  An operation example of the inside / outside determination system 100 will be described with reference to FIG. A vehicle inside / outside determination device 101 included in the vehicle inside / outside determination system 100 is a computer that determines whether the wireless communication device 102 is inside or outside the vehicle V. The vehicle inside / outside determination device 101 is connected to the coil 111 installed in the vehicle V. Here, the coil 111 serves as an antenna that generates a magnetic field when electric power flows. 1 is installed at the center of the vehicle V.

  The wireless communication apparatus 102 is a smart device owned by the user. The wireless communication apparatus 102 includes a magnetic sensor 112 that measures the magnetic field strength. In addition, the vehicle interior / exterior determination device 101 and the wireless communication device 102 are connected by short-range wireless communication. For short-range wireless communication, NFC (Near Field Communication) (registered trademark), ZigBee (registered trademark), or the like can be employed in addition to the above-described Bluetooth.

  Here, in the example of FIG. 1, the wireless communication device 102-1 when the wireless communication device 102 is inside the vehicle V and the wireless communication device 102-when the wireless communication device 102 is outside the vehicle V. The explanation will be divided into two.

  As shown by (1-1) in FIG. 1 regarding the wireless communication device 102-1, the vehicle interior / exterior determination device 101 notifies the wireless communication device 102 of a vehicle interior / exterior determination request by short-range wireless communication. When the vehicle inside / outside determination device 101 receives a response to the vehicle inside / outside determination request, as shown by (2) in FIG. By passing a current through the coil 111, a magnetic field is generated around the coil 111. The intensity of the generated magnetic field is stronger as it is closer to the coil 111 and becomes weaker as it is farther from the coil 111.

  The wireless communication device 102-1 measures the intensity of the generated magnetic field with the magnetic sensor 112-1, and as shown by (3-1) in FIG. 101. The vehicle inside / outside determination device 101 can accurately determine whether the vehicle communication vehicle 102-1 is inside or outside the vehicle V based on the received measurement result.

  For example, the vehicle inside / outside determination device 101 stores the intensity of the magnetic field at the position farthest from the coil 111 inside the vehicle V. The strength of the magnetic field may be a theoretical value obtained by calculation, or when the coil 111 is installed in the vehicle V, the manufacturer of the vehicle V has the smart device at the position farthest from the coil 111. You may obtain by measuring with a magnetic sensor. The vehicle inside / outside determination device 101 has the wireless communication device 102-1 inside or outside the vehicle V based on a comparison result between the magnetic field strength stored in advance and the magnetic field strength included in the received measurement result. Determine whether. In the example of the wireless communication device 102-1, since the strength of the magnetic field included in the received measurement result is larger than the strength of the magnetic field stored in advance, the in-vehicle / outside determination device 101 uses the wireless communication device 102-1 as the vehicle V. Is determined to be inside.

  As for the wireless communication device 102-2, as shown in (1-2) of FIG. 1, the vehicle interior / exterior determination device 101 notifies the wireless communication device 102 of the vehicle interior / exterior determination request by short-range wireless communication. When the vehicle inside / outside determination device 101 receives a response to the vehicle inside / outside determination request, as shown by (2) in FIG. By passing a current through the coil 111, a magnetic field is generated around the coil 111.

  The wireless communication device 102-2 measures the intensity of the generated magnetic field with the magnetic sensor 112-2, and the measurement result is shown in (3-2) of FIG. 101. The vehicle inside / outside determination device 101 can determine whether the vehicle V of the wireless communication device 102-2 is inside or outside based on the received measurement result. In the example of the wireless communication device 102-2, the strength of the magnetic field included in the received measurement result is smaller than the strength of the magnetic field stored in advance. It is determined that it is outside.

  As described above, the inside / outside determination system 100 uses a magnetic sensor included in a general smart device, so that even if the user wears the smart device in an arbitrary position such as a bag or a pocket, the burden on the user is reduced. In addition, it is possible to achieve highly accurate in-vehicle / out-of-vehicle determination. In the following description, a first example which is an example in which a magnetic sensor is also installed in the vehicle V and a second example in which three or more coils are installed in the vehicle V will be described.

Example 1
FIG. 2 is an explanatory diagram illustrating a configuration example of the inside / outside determination system 200 in the first embodiment. The inside / outside determination system 200 includes an ECU (Electronic Control Unit) 201 and a smart device 202. The ECU 201 and the smart device 202 perform short-range wireless communication. The ECU 201 is attached to the vehicle V. The vehicle V is, for example, an automobile. As shown in FIG. 2, the vehicle V includes a door 211, a seat 212, and the like. Here, the ECU 201 corresponds to the vehicle inside / outside determination device 101 shown in FIG. The smart device 202 corresponds to the wireless communication apparatus 102 shown in FIG.

  The ECU 201 controls the engine, the motor, the brake of the vehicle V, the locking and unlocking of the door 211, and the like. Moreover, although the coil antenna and the magnetic sensor are installed in the vehicle V, the example of an installation position is shown in FIG. The smart device 202 is a device operated by the user U. In the example of FIG. 2, the user U is sitting on the seat 212.

  FIG. 3 is an explanatory diagram illustrating an example of installation positions of the coil antenna and the magnetic sensor in the vehicle V according to the first embodiment. Here, (a) of FIG. 3 shows a side view when the vehicle V is drawn from the side viewpoint. FIG. 3B shows a top view when the vehicle V is drawn from an upward viewpoint.

  As shown in FIGS. 3A and 3B, the vehicle V is provided with a coil antenna 301 and a magnetic sensor 302. Here, the coil antenna 301 corresponds to the coil 111 shown in FIG.

  The coil antenna 301 and the magnetic sensor 302 are connected to the ECU 201. Here, in the first embodiment, the installation position of the magnetic sensor 302 is preferably a position where the magnetic field intensity generated by the coil antenna 301 is the smallest in the vehicle V.

  As shown in FIGS. 3A and 3B, the coil antenna 301 is installed at the center inside the bottom surface of the vehicle V. The magnetic sensors 302 are respectively installed at four positions on the inner side of the upper surface of the vehicle V.

  FIG. 4 is an explanatory diagram illustrating a hardware configuration example in the vehicle V according to the first embodiment. The vehicle V in the first embodiment includes the ECU 201. The ECU 201 includes a CPU (Central Processing Unit) 401, a ROM (Read Only Memory) 402, a RAM (Random Access Memory) 403, a disk drive 404, and a disk 405. In addition to the ECU 201, the vehicle V in the first embodiment includes a short-range wireless communication interface 411, an engine start button 412, a pressure sensor 413, a door 211, a coil antenna 301, and a magnetic sensor 302. Have. The CPU 401 to the disk drive 404, the short-range wireless communication interface 411 to the pressure sensor 413, the door 211, the coil antenna 301, and the magnetic sensor 302 are connected by a bus 420, respectively.

  Here, the CPU 401 is an arithmetic processing device that controls the entire ECU 201. The ROM 402 is a non-volatile memory that stores a program such as a boot program. A RAM 403 is a volatile memory used as a work area for the CPU 401.

  The disk drive 404 is a control device that controls reading and writing of data with respect to the disk 405 according to the control of the CPU 401. The disk 405 stores data written under the control of the disk drive 404. As the disk drive 404, for example, a magnetic disk drive, a solid state drive, or the like can be adopted. For example, when the disk drive 404 is a magnetic disk drive, a magnetic disk can be used as the disk 405. When the disk drive 404 is a solid state drive, a semiconductor memory formed by a semiconductor element, that is, a so-called semiconductor disk can be used for the disk 405.

  The short-range wireless communication interface 411 is a control device that controls input / output of data from the smart device 202 at a short distance. For example, the short-range wireless communication interface 411 is connected to the smart device 202 by Bluetooth, NFC, ZigBee, or the like, which is one of the short-range wireless communication standards.

  The engine start button 412 is a button for starting the engine of the vehicle V when pressed.

  The pressure sensitive sensor 413 is a sensor that detects a load applied to the seat 212. Specifically, the pressure-sensitive sensor 413 is installed under the seat 212 and detects a load applied to the seat 212 when the user U sits on the seat 212. Further, a pressure sensitive film sensor may be employed instead of the pressure sensitive sensor 413.

  The door 211 is a door or door that is attached to the entrance of the vehicle V. Then, the ECU 201 locks and unlocks the door 211. The coil antenna 301 is a coil whose current can be adjusted. The magnetic sensor 302 is a sensor that measures the magnetic field strength.

  Further, the ECU 201 can detect the presence / absence of operation of an engine installed in the vehicle V and the opening / closing of the door of the vehicle.

  FIG. 5 is an explanatory diagram illustrating a hardware configuration example of the smart device 202 according to the first embodiment. In FIG. 5, the smart device 202 includes a CPU 501, a ROM 502, a RAM 503, a disk drive 504, and a disk 505. The smart device 202 further includes a communication interface 506, a touch panel 507, a short-range wireless communication interface 508, and a magnetic sensor 509. Further, the CPU 501 to the disk drive 504 and the communication interface 506 to the magnetic sensor 509 are connected by a bus 510, respectively.

  Here, the CPU 501 is an arithmetic processing device that controls the entire smart device 202. The ROM 502 is a non-volatile memory that stores programs such as a boot program. A RAM 503 is a volatile memory used as a work area for the CPU 501.

  The disk drive 504 is a control device that controls reading and writing of data with respect to the disk 505 in accordance with the control of the CPU 501. The disk 505 stores data written under the control of the disk drive 504. As the disk drive 504, for example, a solid state drive can be employed. For example, when the disk drive 504 is a solid state drive, a semiconductor memory formed by a semiconductor element, that is, a so-called semiconductor disk can be adopted as the disk 505.

  A communication interface 506 controls a network and an internal interface, and is a control device that controls input / output of data from other devices. Specifically, the communication interface 506 is connected to other devices via a network through a communication line.

  The touch panel 507 is a device that combines a sensor that detects a tap operation or a flick operation by the user U and a display that displays data such as a document, an image, and function information including a cursor, an icon, or a tool box. Specifically, the sensor is arranged on the display. The sensor is a sensor that employs, for example, a resistance film method, a surface type or a projection type capacitance method. As the display, for example, a TFT (Thin Film Transistor) liquid crystal display can be adopted.

  The short-range wireless communication interface 508 is a control device that controls input / output of data from the ECU 201 at a short distance. The magnetic sensor 509 is a sensor that measures the magnetic field strength.

(Functional configuration example of the inside / outside determination system 200)
FIG. 6 is an explanatory diagram illustrating a functional configuration example of the in-vehicle / out-of-vehicle determination system 200. The ECU 201 has a control unit 600. The control unit 600 includes a communication unit 601, a coil antenna control unit 602, a magnetic sensor control unit 603, a getting-off determination unit 604, a vehicle inside / outside determination unit 605, an alarm generation unit 606, and a door control unit 607. Including. The control unit 600 also includes a basic function for controlling the ECU 201. The control unit 600 realizes the functions of the respective units when the CPU 401 executes a program stored in the storage device. Specifically, the storage device is, for example, the ROM 402, the RAM 403, the disk 405, etc. shown in FIG. The processing results of each unit are stored in the RAM 403, the register of the CPU 401, the cache memory of the CPU 401, and the like.

  The smart device 202 has a control unit 610. The control unit 610 includes a communication unit 611 and a magnetic sensor control unit 612. The control unit 610 also includes a basic function for controlling the smart device 202. The control unit 610 realizes the functions of the respective units when the CPU 501 executes a program stored in the storage device. Specifically, the storage device is, for example, the ROM 502, the RAM 503, the disk 505, etc. shown in FIG. The processing results of each unit are stored in the RAM 503, the CPU 501 register, the CPU 501 cache memory, and the like.

  The communication unit 601 communicates with the smart device 202 by short-range wireless communication. For example, the communication unit 601 notifies the smart device 202 of a vehicle inside / outside determination request by short-range wireless communication. In addition, the communication unit 601 receives a response to the inside / outside determination request from the smart device 202.

  The coil antenna control unit 602 controls the coil antenna 301. Specifically, when the coil antenna control unit 602 receives a response to the inside / outside determination request from the smart device 202, the coil antenna control unit 602 causes a current to flow through the coil antenna 301.

  In addition, when the coil antenna control unit 602 receives a value indicating the resolution of the magnetic sensor 509 by short-range wireless communication, the coil antenna control unit 602 calculates a current value of the current flowing through the coil based on the value indicating the resolution of the magnetic sensor 509. Also good. An example of a specific calculation method is shown in FIGS. And the coil antenna control part 602 flows an electric current through the coil antenna 301 based on the calculated electric current value, when the response with respect to the vehicle inside / outside determination request | requirement from the smart device 202 is received.

  The magnetic sensor control unit 603 controls the magnetic sensor 302 and acquires a measurement result measured by the magnetic sensor 302. For example, the magnetic sensor control unit 603 measures the magnetic field intensity generated by passing a current through the coil antenna 301 with the magnetic sensor 302 and acquires the measurement result.

  The getting-off determination unit 604 determines whether or not the user U has got off the vehicle V. Specifically, when the operation of the engine of the vehicle V is stopped, the door of the vehicle V is opened and closed, and there is no load applied to the seat 212, the getting-off determination unit 604 determines that the user U has got off the vehicle V. judge.

  The inside / outside determination unit 605 determines whether the smart device 202 is inside or outside the vehicle based on the received measurement result. In addition, the inside / outside determination unit 605 determines whether the smart device 202 is inside or outside the vehicle based on the comparison result between the measurement result measured by the magnetic sensor 302 and the measurement result received by the communication unit 601. May be.

  The alarm generation unit 606 provides an alarm to the user U when the getting-off determination unit 604 determines that the user U has got out of the vehicle V and the in-and-out determination unit 605 determines that the smart device 202 is inside the vehicle V. Is generated. As the specific alarm, any alarm may be used if the user U outside the vehicle V notices the alarm. For example, the alarm generation unit 606 may sound a buzzer outside the vehicle V.

  Further, the alarm generation unit 606 generates an alarm for the user of the smart device 202 when the engine start button 412 is pressed and the smart device 202 is determined to be outside the vehicle V. In this case, since the user U is inside the vehicle V, the alarm generation unit 606 may sound an in-vehicle buzzer of the vehicle V, for example.

  The door control unit 607 locks and unlocks the door 211. Specifically, the door control unit 607 determines that the getting-off determination unit 604 determines that the user U has got off the vehicle V, and the inside / outside determination unit 605 determines that the smart device 202 is outside the vehicle V. The door 211 is locked.

  The communication unit 611 communicates with the ECU 201 by short-range wireless communication. For example, the communication unit 611 receives a vehicle inside / outside determination request from the ECU 201 by short-range wireless communication. Further, the communication unit 611 notifies the ECU 201 of the measurement result of the magnetic sensor 509 by short-range wireless communication.

  The magnetic sensor control unit 612 controls the magnetic sensor 509 and acquires a measurement result measured by the magnetic sensor 509. For example, the magnetic sensor control unit 612 measures the magnetic field intensity generated by passing a current through the coil antenna 301 with the magnetic sensor 509 and acquires the measurement result.

  In the following, the inside / outside determination process will be described using an example used to prevent confinement of the smart device 202 which is the key of the vehicle V. The vehicle inside / outside determination system 200 performs the following authentication 0, determination 0 to determination 4.

  First, as authentication 0, the ECU 201 and the smart device 202 indicate whether the smart device 202 is a legitimate smart device 202 registered in advance when the distance at which short-range wireless communication can be established, for example, about 10 m in the case of Bluetooth. Perform key authentication. When the authentication is successful, the ECU 201 and the smart device 202 establish a connection.

  Next, as determination 0, the smart device 202 notifies the ECU 201 side of the magnetic sensor resolution of the smart device 202 to the ECU 201 side by short-range wireless communication in order to accurately determine whether the vehicle is inside or outside the vehicle. The ECU 201 calculates a necessary pulse current from the notified magnetic sensor resolution of the smart device 202 so that the magnetic sensor of the smart device 202 can sufficiently detect the magnetic field generated by the coil when the smart device 202 is in the passenger compartment. . Specific calculation examples of the required pulse current are shown in FIGS.

  When the ECU 201 generates a vehicle inside / outside determination request due to some factor such as the user U getting off as the determination 1, the ECU 201 notifies the smart device 202 of the vehicle inside / outside determination request through short-range wireless communication. Further, when the smart device 202 receives the inside / outside determination request, the smart device 202 activates the magnetic sensor 509 and informs the vehicle V side that it is in a sensing preparation state by short-range wireless communication.

  Next, as a determination 2, when the ECU 201 receives a notification that the smart device 202 is in a sensing preparation state, the ECU 201 activates the magnetic sensor 302 and passes the necessary pulse current calculated in the determination 0 to the coil antenna 301. An example of how the current flows is shown in FIGS.

  Then, as determination 3, the smart device 202 measures the magnetic field intensity generated by the coil antenna 301 with its own magnetic sensor 509, and notifies the ECU 201 by short-range wireless communication. Similarly, the ECU 201 similarly measures the magnetic field intensity generated by the coil antenna 301 with its own magnetic sensor 302.

  Next, as determination 4, when the ECU 201 receives the magnetic intensity measured by the magnetic sensor 509 of the smart device 202, the ECU 201 compares it with the magnetic field intensity measured by the vehicle-side magnetic sensor 302. Here, when the magnetic field strength measured by the magnetic sensor 509 of the smart device 202 is smaller than the magnetic field strength measured by the vehicle-side magnetic sensor 302, the ECU 201 determines that the smart device 202 is outside the vehicle V. The door 211 is locked. Conversely, when the magnetic field intensity measured by the magnetic sensor 509 of the smart device 202 is greater than the magnetic field intensity measured by the magnetic sensor 302 on the vehicle V side, the ECU 201 determines that the smart device 202 is inside the vehicle V. And a misplaced alarm is generated. A sequence when the smart device 202 is outside the vehicle V is shown in FIG. 11, and a sequence when the smart device 202 is inside the vehicle V is shown in FIG. In addition, FIGS. 13 to 16 show flowcharts of the inside / outside determination processing.

  FIG. 7 is an explanatory diagram (part 1) illustrating an example of calculating the necessary pulse current from the magnetic sensor resolution. FIG. 8 is an explanatory diagram (part 2) showing an example of calculating the necessary pulse current from the magnetic sensor resolution. 7 and 8 show an example in which the necessary pulse current is calculated using the coil antenna 301 in the vehicle V as an example.

In FIG. 7, a coil antenna 301 is installed on the bottom surface in the vehicle V. Here, if the magnetic sensor 509 can detect the magnetic field strength of the coil antenna 301 at the point L ₁ farthest from the coil antenna 301, the magnetic field strength of the coil antenna 301 can be determined no matter where the smart device 202 is in the vehicle V. It will be possible to detect.

When the current I ₁ is passed through the coil antenna 301, the magnetic field strength _BL affecting the point L ₁ can be derived as shown in the following equation (1).

Here, l ₁ is a distance from the center of the coil antenna 301 to the point L ₁ . Further, the elevation angle between the center of the coil antenna 301 and the point L ₁ is θ ₁ . The number of turns of the coil antenna 301 is N ₁ . The radius of the coil antenna 301 is r ₁ . Also, the area of the coil antenna 301 and S _1. The variables on the right side that appear in the equation (1) all become known values when the coil antenna 301 is installed.

Further, the coil antenna 301, when a current flows in -I _1, the magnetic field strength B _R affecting the point L ₁ is Michibikeru as the following equation (2).

Here, a graph 801 shown in FIG. 8 is a graph showing the magnetic field strength in the time change at the point L ₁ . B _noise in the graph 801 is _noise due to geomagnetism or the like. Here, by calculating B _L −B _R , the magnetic field intensity generated by the coil antenna 301 at the point L ₁ excluding the influence of B _noise can be extracted. The magnetic field strength B _L -B _R is and does not exceed the magnetic sensor resolution mu, it is impossible to detect the magnetic field strength coil antenna 301 caused. Here, the magnetic field strength B _L -B _R becomes the following equation (3).

Then, the following equation (4) is derived from the relationship of magnetic field strength B _L −B _R > magnetic sensor resolution μ.

That is, in order to detect the magnetic field intensity generated by the coil antenna 301 at the point L ₁ , the current I ₁ satisfying the expression (4) may be passed through the coil antenna 301. However, B _noise, it is common that vibrate rather than constant and B _L -B _R is a value close to the magnetic sensor resolution mu, since receiving error increases the influence of vibration noise, As shown by the following formula (5), it is preferable to provide a margin using a predetermined value σ.

By arranging the equation (5) with respect to the current I ₁ , the following equation (6) is derived.

Accordingly, when the ECU 201 receives the magnetic sensor resolution μ from the smart device 202, the ECU 201 calculates the necessary pulse current I ₁ using the equation (6). In Equation (6), the variables included in the coefficient portion of (μ + σ) are all known values when the coil antenna 301 is installed. Therefore, the ECU 201 may calculate the value of the coefficient (μ + σ) when the coil antenna 301 is installed by the manufacturer of the vehicle V or the like. The ECU 201 may calculate the necessary pulse current by multiplying (μ + σ) by a coefficient value calculated in advance when the magnetic sensor resolution is received.

  Next, measured values of the magnetic field strength when the smart device 202 is outside and inside the vehicle V will be described with reference to FIGS. 9 and 10.

  FIG. 9 is an explanatory diagram illustrating an example of a measured value of the magnetic field strength when the smart device 202 is outside the vehicle V. A graph 901 shown in FIG. 9 is a graph showing the relationship between time and current in the coil antenna 301. Here, I in the graph 901 is the necessary pulse current described with reference to FIGS.

  Graphs 902 and 903 shown in FIG. 9 respectively show the magnetic field strengths on the smart device 202 side and the vehicle V side when a current is passed through the coil antenna 301 as shown by the graph 901. When the smart device 202 is outside the vehicle V, as shown in FIG. 9, the magnetic field strength value on the smart device 202 side indicated by the graph 902 is smaller than the magnetic field strength value on the vehicle V side indicated by the graph 903.

  FIG. 10 is an explanatory diagram illustrating an example of a measured value of the magnetic field strength when the smart device 202 is inside the vehicle V. A graph 1001 shown in FIG. 10 is a graph showing the relationship between time and current in the coil antenna 301. Here, I in the graph 1001 is the necessary pulse current described with reference to FIGS.

  Graphs 1002 and 1003 shown in FIG. 10 respectively show the magnetic field strengths on the smart device 202 side and the vehicle V side when a current is passed through the coil antenna 301 as shown by the graph 1001. When the smart device 202 is inside the vehicle V, as shown in FIG. 10, the magnetic field strength value on the smart device 202 side indicated by the graph 1002 is larger than the magnetic field strength value on the vehicle V side indicated by the graph 1003.

  Next, the inside / outside determination sequence when the smart device 202 is outside and inside the vehicle V will be described with reference to FIGS. 11 and 12.

  FIG. 11 is an explanatory diagram showing an example of the inside / outside determination sequence when the smart device 202 is outside the vehicle V. The ECU 201 and the smart device 202 complete authentication and connect (step S1101). The processing in step S1101 corresponds to authentication 0 described above.

  Next, the smart device 202 notifies the ECU 201 of the magnetic sensor resolution of the magnetic sensor 509 by short-range wireless communication (step S1102). The ECU 201 that has received the magnetic sensor resolution calculates a necessary pulse current based on the magnetic sensor resolution (step S1103). The processes in steps S1102 and S1103 correspond to the determination 0 described above.

  Then, when the user U gets out of the vehicle V (step S1104), the ECU 201 notifies the smart device 202 of a vehicle inside / outside determination request through short-range wireless communication (step S1105). Here, in order to determine whether the user U gets out of the vehicle V, for example, the ECU 201 can determine whether or not there is a load applied to the seat 212. The getting-off determination process is shown in FIG. The smart device 202 that has received the inside / outside determination request activates the magnetic sensor 509 (step S1106), and notifies the ECU 201 of a sensing preparation completion notification by short-range wireless communication (step S1107). The processing in steps S1104 to S1107 corresponds to the determination 1 described above.

  The ECU 201 that has received the notification of completion of sensing preparation activates the magnetic sensor 302 (step S1108) and causes the calculated necessary pulse current to flow through the coil antenna 301 (step S1109). The processes in steps S1108 and S1109 correspond to the determination 2 described above.

  The smart device 202 that has measured the magnetic field intensity generated from the coil antenna 301 by the magnetic sensor 509 notifies the ECU 201 of the measured magnetic field intensity by short-range wireless communication (step S1110). Similarly, the ECU 201 measures the magnetic field intensity generated by the coil antenna 301 with its own magnetic sensor 302. The process in step S1110 corresponds to the determination 3 described above.

  The ECU 201 that has received the measured magnetic field strength compares the magnetic field strength measured by its own magnetic sensor 302 with the received magnetic field strength (step S1111). In the example of FIG. 11, since the smart device 202 is outside the vehicle V, as shown in FIG. 9, the magnetic field intensity measured by the magnetic sensor 509 of the smart device 202 is measured by the magnetic sensor 302 on the vehicle V side. Smaller than the magnetic field strength. Accordingly, the ECU 201 locks the door 211 (step S1112).

  FIG. 12 is an explanatory diagram showing an example of the inside / outside determination sequence when the smart device 202 is inside the vehicle V. The processes in steps S1201 to S1210 shown in FIG. 12 are the same processes and the same processing results as steps S1101 to S1110 shown in FIG.

  The ECU 201 that has received the measured magnetic field strength compares the magnetic field strength measured by its own magnetic sensor 302 with the received magnetic field strength (step S1211). In the example of FIG. 12, since the smart device 202 is inside the vehicle V, as shown in FIG. 10, the magnetic field intensity measured by the magnetic sensor 509 of the smart device 202 is measured by the magnetic sensor 302 on the vehicle V side. Greater than the magnetic field strength. Accordingly, the ECU 201 generates a misplacement alarm (step S1212).

  Next, flowcharts of the inside / outside determination processing performed by the ECU 201 and the smart device 202 are shown in FIGS.

  FIG. 13 is a flowchart (part 1) illustrating an example of a vehicle inside / outside determination processing procedure according to the first embodiment. FIG. 14 is a flowchart (part 2) illustrating an example of the vehicle inside / outside determination processing procedure according to the first embodiment. The inside / outside determination process is a process for determining whether the smart device 202 is inside or outside the vehicle V. It is assumed that the vehicle inside / outside determination process shown in FIGS. 13 and 14 is the above-described authentication 0, that is, the state where the authentication is completed.

  The smart device 202 notifies the magnetic sensor resolution by short-range wireless communication (step S1301). After the process of step S1301, the smart device 202 waits until it receives a vehicle inside / outside determination request from the ECU 201.

  The ECU 201 determines whether or not the magnetic sensor resolution has been received (step S1302). When the magnetic sensor resolution has not been received (step S1302: No), the ECU 201 executes the process of step S1302 again. On the other hand, when the magnetic sensor resolution is received (step S1302: Yes), the ECU 201 calculates a necessary pulse current based on the magnetic sensor resolution (step S1303). Next, the ECU 201 determines whether or not the user U has got off (step S1304). As the process of step S1304, for example, the ECU 201 performs a getting-off determination process shown in FIG.

  When the user U has not got off (step S1304: No), the ECU 201 executes the process of step S1304 again. On the other hand, when the user U gets off (step S1304: Yes), the ECU 201 notifies the smart device 202 of a vehicle inside / outside determination request by short-range wireless communication (step S1401). After notifying the inside / outside determination request, the ECU 201 waits until sensing completion from the smart device 202 is received.

  The smart device 202 determines whether or not a vehicle inside / outside determination request has been received (step S1402). When the vehicle inside / outside determination request is not received (step S1402: No), the smart device 202 executes the process of step S1402 again. On the other hand, when the vehicle inside / outside determination request is received (step S1402: Yes), the smart device 202 activates the magnetic sensor 509 (step S1403). After the activation of the magnetic sensor 509 is completed, the smart device 202 notifies the ECU 201 of completion of sensing preparation through short-range wireless communication (step S1404).

  The ECU 201 determines whether or not sensing preparation completion has been received (step S1405). If the sensing preparation completion has not been received (step S1405: NO), the ECU 201 executes the process of step S1405 again. On the other hand, when the sensing preparation completion is received (step S1405: Yes), the ECU 201 activates the magnetic sensor 302 (step S1406). Then, the ECU 201 causes a necessary pulse current to flow through the coil antenna 301 (step S1407). When the necessary pulse current flows through the coil antenna 301, the magnetic sensor 509 of the smart device 202 measures the magnetic field intensity generated from the coil antenna 301.

  The smart device 202 notifies the magnetic field intensity measured by the magnetic sensor 509 through short-range wireless communication (step S1408). Then, the smart device 202 stops the magnetic sensor (step S1409). After the process of step S1409 ends, the smart device 202 ends the in-vehicle / outside determination process.

  The ECU 201 receives the magnetic field strength (step S1410). The ECU 201 determines whether or not the magnetic field intensity measured by the magnetic sensor 509 on the smart device 202 side is smaller than the magnetic field intensity measured by the magnetic sensor 302 on the vehicle V side (step S1411). When the magnetic field intensity measured by the magnetic sensor 509 is smaller than the magnetic field intensity measured by the magnetic sensor 302 (step S1411: Yes), the ECU 201 locks the door 211 (step S1412). On the other hand, when the magnetic field intensity measured by the magnetic sensor 509 is greater than or equal to the magnetic field intensity measured by the magnetic sensor 302 (step S1411: No), the ECU 201 issues an alarm (step S1413). After the process of step S1412, or step S1413, the ECU 201 ends the in-vehicle / out-of-vehicle determination process.

  FIG. 15 is a flowchart illustrating an example of a getting-off determination processing procedure. The getting-off determination process is a process for determining whether or not the user U has got off the vehicle V.

  The ECU 201 determines whether or not the engine of the vehicle V is stopped (step S1501). When the engine of the vehicle V is not stopped (step S1501: No), the ECU 201 executes the process of step S1501 again. On the other hand, when the engine of the vehicle V is stopped (step S1501: Yes), the ECU 201 determines whether the door 211 has just been opened or closed (step S1502). For example, the ECU 201 determines whether or not the door 211 has been opened / closed immediately before a predetermined time before the current time.

  When the door 211 is not opened or closed immediately before (step S1502: No), the ECU 201 executes the process of step S1502 again. On the other hand, when the door 211 is opened / closed immediately before (step S1502: Yes), the ECU 201 determines whether or not a load is applied to the seat 212 (step S1503). When the load is applied to the seat 212 (step S1503: Yes), the ECU 201 proceeds to the process of step S1502. On the other hand, when no load is applied to the seat 212 (step S1503: No), the ECU 201 specifies that the user U has got off (step S1504). After the process of step S1504 ends, the ECU 201 ends the getting-off determination process.

  Here, the inside / outside determination processing shown in FIG. 13 and FIG. 14 is processing for preventing confinement of the key smart device 202. In addition to this example, the vehicle inside / outside determination processing may also be performed when the engine start button is pressed. In FIG. 16, a flowchart of the inside / outside determination process when the engine start button is pressed will be described.

  FIG. 16 is a flowchart showing an example of the in-vehicle / outside determination processing procedure when the engine start button is pressed. Here, it is assumed that the vehicle inside / outside determination processing in FIG. 16 is the above-described authentication 0, that is, the authentication is completed, and the processing in steps S1301 to S1303 in FIG. 13 has been executed.

  The ECU 201 determines whether or not the engine start button 412 has been pressed (step S1601). If the engine start button 412 has not been pressed (step S1601: No), the ECU 201 executes the process of step S1601 again. On the other hand, when the engine start button 412 is pressed (step S1601: Yes), the ECU 201 proceeds to the process of step S1401.

  The processing after step S1401 is substantially the same as the processing shown in FIG. About difference, when it becomes step S1411: Yes, it has shown that the smart device 202 exists in the outer side of the vehicle V. FIG. Here, the user U is in the vehicle V because the user presses the engine start button 412. Therefore, the ECU 201 generates an alarm when step S1411: Yes. For example, the case of step S1411: Yes is a case where the user U possesses the smart device 202 until just before getting on the vehicle V, but drops the smart device 202 when getting on. More specifically, for example, the user U has placed the smart device 202 in the chest pocket, but when the user U gets on the vehicle V, the user U is bent forward, drops the smart device 202, and does not notice that it has been dropped. This is a case where the engine start button 412 is pressed.

  On the other hand, when step S1411: No, it indicates that the smart device 202 is inside the vehicle V. In this case, the ECU 201 starts the engine of the vehicle V when step S1411: No. is obtained.

  As described above, the inside / outside determination system 200 causes the current to flow through the coil antenna 301 installed in the vehicle V when the smart device 202 approaches the vehicle V, and the magnetic field intensity measured by the magnetic sensor 509 of the smart device 202. The ECU 201 is notified of the measurement result. Thereby, the inside / outside determination system 200 can accurately determine the inside / outside of the smart device 202 using the magnetic sensor 509 that is the existing hardware of the smart device 202. Further, in the position positioning technique using a magnetic field, as shown in the second embodiment, the position of the measurement object is usually estimated using three or more coils, but in the first embodiment, the position of the smart device 202 is estimated. Instead, it is only determined whether the vehicle is inside the vehicle V or outside the vehicle V. For this reason, as described above, determination with one coil antenna 301 becomes possible. Thereby, the vehicle interior / exterior determination system 200 leads to reduction in response speed, power consumption, and cost as compared with the vehicle interior / exterior determination system of the second embodiment.

  Further, the inside / outside determination system 200 may determine whether the smart device 202 is inside or outside the vehicle V based on the measurement result of the magnetic sensor 509. As described above, the vehicle inside / outside determination system 200 can perform the vehicle inside / outside determination function required by the smart device 202 instead of the electronic key.

  Further, the inside / outside determination system 200 may calculate the current value of the current flowing through the coil antenna 301 based on the resolution of the magnetic sensor 509. As a result, the inside / outside determination system 200 allows a smart entry by various smart devices 202 and power consumption of the vehicle V because current corresponding to the performance of the magnetic sensor 509 of the smart device 202 flows through the coil antenna 301. Can be reduced. Here, the performance of the magnetic sensor included in the smart device 202 is individually different depending on the manufacturer or the like. For example, if a current having a low power value is caused to flow through the coil antenna 301 with respect to the magnetic sensor 509 having a high resolution, the magnetic sensor 509 having a high resolution may not be able to be detected. In the present embodiment, as expressed by the equation (6), a large current is passed through the coil antenna 301 for the magnetic sensor 509 having a high resolution, and a small current is passed through the coil antenna 301 for the magnetic sensor 509 having a low resolution. Will be shed. Therefore, in this embodiment, an appropriate current according to the performance of the magnetic sensor 509 can be passed through the coil antenna 301.

  In addition, the inside / outside determination system 200 may determine whether the vehicle V is inside or outside the vehicle V based on a comparison result between the measurement result measured by the magnetic sensor 302 and the measurement result measured by the magnetic sensor 509. . Thereby, the vehicle interior / exterior determination system 200 can improve the vehicle interior / exterior determination accuracy compared to the case where the magnetic field strength stored in advance and the measurement result measured by the magnetic sensor 509 are compared. Specifically, if there is an electrical product such as a personal computer inside the vehicle V, the magnetic field generated by the coil antenna 301 changes. Therefore, by comparing the measurement result measured by the magnetic sensor 302 with the measurement result measured by the magnetic sensor 509, the influence of the electrical product inside the vehicle V can be ignored. In addition, the determination accuracy inside and outside the vehicle can be improved.

  Further, the inside / outside determination system 200 determines that the operation of the engine of the vehicle V is stopped, the door 211 is opened and closed, there is no load applied to the seat 212, and the smart device 202 is inside the vehicle V. In such a case, an alarm for the user U may be generated. Thereby, the inside / outside determination system 200 can suppress the prevention of confinement of the key smart device 202.

  The in-vehicle / outside determination system 200 may generate an alarm for the user U when the engine start button 412 is pressed and the smart device 202 is determined to be outside the vehicle V. As a result, the inside / outside determination system 200 can prevent the vehicle V from running while the key smart device 202 is outside the vehicle.

(Example 2)
In the vehicle inside / outside determination system 200 according to the first embodiment, by installing the magnetic sensor 302 in the vehicle V, the inside / outside determination of the smart device 202 is performed. On the other hand, in the second embodiment, a plurality of coil antennas 301 are installed in the vehicle V, the position of the smart device 202 is specified from the magnetic field intensity generated from each coil antenna 301 of the plurality of coil antennas 301, and smart The inside / outside determination of the device 202 is performed. In addition, about the location similar to the location demonstrated in Example 1, the same code | symbol is attached | subjected and illustration and description are abbreviate | omitted.

  FIG. 17 is an explanatory diagram illustrating a functional configuration example of the in-vehicle / outside determination system 1700 according to the second embodiment. The vehicle inside / outside determination system 1700 includes an ECU 1701 and a smart device 1702. The vehicle V in the second embodiment includes three or more coil antennas 301. The number of coil antennas 301 included in the vehicle V in the second embodiment is not limited as long as it is three or more. When the number of coil antennas 301 increases, the accuracy of position identification of the smart device 1702 can be improved.

  ECU 1701 has a control unit 1710. The control unit 1710 includes a communication unit 1711, a coil antenna control unit 1712, a getting-off determination unit 604, an in-vehicle determination unit 605, an alarm generation unit 606, and a door control unit 607. Control unit 1710 also includes a basic function for controlling ECU 1701. The control unit 1710 realizes the functions of the respective units when the CPU 401 executes a program stored in the storage device. Specifically, the storage device is, for example, the ROM 402, the RAM 403, the disk 405, etc. shown in FIG. The processing results of each unit are stored in the RAM 403, the register of the CPU 401, the cache memory of the CPU 401, and the like.

  In addition, the smart device 1702 includes a control unit 1720. Control unit 1720 includes a communication unit 1721, a magnetic sensor control unit 612, and a specifying unit 1722. The control unit 1720 also includes a basic function for controlling the smart device 1702. The control unit 1720 implements the functions of the respective units when the CPU 501 executes a program stored in the storage device. Specifically, the storage device is, for example, the ROM 502, the RAM 503, the disk 505, etc. shown in FIG. The processing results of each unit are stored in the RAM 503, the CPU 501 register, the CPU 501 cache memory, and the like.

  In addition to the function of the communication unit 601, the communication unit 1711 receives a request for reducing the current value of the current flowing through the coil antenna 301 from the smart device 1702 by short-range wireless communication.

  When receiving a response to the vehicle inside / outside determination request from the wireless communication device, the coil antenna control unit 1712 causes a current to flow through each coil antenna 301 at different times among the coil antennas 301 of the three or more coil antennas 301. .

  When the coil antenna control unit 1712 receives a request to reduce the current value of the current flowing through the coil antenna 301, the coil antenna control unit 1712 is based on the current value lower than the current value of the current passed through the coil antenna 301. Current is passed through.

  In addition to the function of the communication unit 611, the communication unit 1721 notifies the ECU 1701 of a request to reduce the current value of the current flowing through the coil antenna 301 specified by the specifying unit 1722 by short-range wireless communication.

  The identifying unit 1722 identifies the coil antenna 301 that has generated a magnetic field having an intensity that matches the maximum value that can be measured by the magnetic sensor 509 from the measurement result measured by the magnetic sensor 509. Hereinafter, the maximum value that can be measured by the magnetic sensor 509 is referred to as a “maximum measurement range of the magnetic sensor 509”.

  An operation example of the specifying unit 1722 will be specifically described. For example, the coil antenna control unit 1712 causes a current to flow through the coil antenna 301-1 at a certain time, a current to the coil antenna 301-2 at the next time, and a current to the coil antenna 301-3 at the next time. Suppose that it was washed away. At this time, the specifying unit 1722 may specify the order in which the current flows through the coil antenna 301 that has generated the magnetic field intensity of the maximum measurement range of the magnetic sensor 509. And the communication part 1721 should just include the identified order, when notifying the request to reduce an electric current value. If the order in which the currents flow is known, the coil antenna control unit 1712 can reduce the current value of the current that flows through the coil antenna 301 corresponding to the order. Further, the specifying unit 1722 may specify the time when the current flows through the coil antenna 301 that has generated the magnetic field intensity in the maximum measurement range of the magnetic sensor 509.

  FIG. 18 is an explanatory diagram illustrating an example of an installation position of the coil antenna 301 according to the second embodiment. Here, FIG. 18A shows a side view when the vehicle V is drawn from the side viewpoint. FIG. 18B shows a top view when the vehicle V is drawn from an upward viewpoint.

  As shown in FIGS. 18A and 18B, coil antennas 301-1 to 301-3 are installed in the vehicle V. Here, as shown in FIG. 18A, the coil antennas 301-1 to 301-3 are installed inside the bottom surface of the vehicle V, but may be anywhere inside the vehicle V, for example, It may be installed inside the ceiling surface. The positional relationship between the coil antennas 301-1 to 301-3 is not limited to the positional relationship shown in FIG.

  FIG. 19 is an explanatory diagram illustrating a hardware configuration example in the vehicle V according to the second embodiment. The vehicle V in the first embodiment includes an ECU 1701. Since the hardware of the ECU 1701 is the same as that of the ECU 201, the description thereof is omitted. In addition to the ECU 201, the vehicle V in the second embodiment includes a short-range wireless communication interface 411, an engine start button 412, a pressure sensor 413, a door 211, and coil antennas 301-1 to 301-3. . As described above, the vehicle V according to the second embodiment includes the three coil antennas 301 instead of the magnetic sensor 302. The hardware configuration of the smart device 1702 is the same as the hardware configuration of the smart device 202, and thus the description thereof is omitted.

  In the following, the inside / outside determination process will be described using an example used to prevent confinement of the smart device 1702 which is the key of the vehicle V. The vehicle inside / outside determination system 1700 performs the following authentication 0, determination 0 to determination 4, and exceptions 3-1 and 3-2 that occur in determination 3. Here, since authentication 0 and determination 1 are the same processes as authentication 0 and determination 1 of the first embodiment, description thereof will be omitted.

  After completion of the authentication 0, as a determination 0, the smart device 1702 notifies the ECU 1701 side of the magnetic sensor resolution of the smart device 1702 by short-range wireless communication in order to accurately perform the in-vehicle determination. The ECU 1701 calculates a necessary pulse current from the magnetic sensor resolution of the notified smart device 1702 so that the magnetic sensor 509 can sufficiently detect the magnetic field generated by each coil antenna 301 if the smart device 1702 is in the vehicle interior. Here, since the required pulse current has a different value for each coil antenna 301, the ECU 1701 calculates the required pulse current for each coil antenna 301.

  After the determination 1, the ECU 1701 receives the notification that the smart device 1702 is in the sensing preparation state as the determination 2, and sequentially passes the necessary pulse current calculated in the determination 0 to the coil antennas 301-1 to 301-3. FIG. 20 shows an example of how the necessary pulse current flows to the coil antennas 301-1 to 301-1.

  After the completion of the determination 2, as the determination 3, the smart device 1702 measures the magnetic field intensity generated by the three or more coil antennas 301 installed on the vehicle V side with its own magnetic sensor 509 and notifies the vehicle V side. . FIG. 21 shows an embodiment of how to take out the magnetic field intensity generated by each coil antenna 301 of the magnetic sensor 509.

  Then, as determination 4, the ECU 1701 calculates the distance between the smart device 1702 and each coil antenna 301 from the notified magnetic field strength of each coil antenna 301, and calculates the position of the smart device 1702 by triangulation. The ECU 1701 generates a misplacement alarm when determining that the calculated position of the smart device 1702 is inside the vehicle V based on the prestored range of the vehicle V.

  Further, as an exception 3-1 that occurs in the determination 3, one or more of the magnetic field strengths generated by the three or more coil antennas 301 in the determination 3 may exceed the measurement range of the magnetic sensor 509 of the smart device 1702. . In this case, the smart device 1702 requests current adjustment of the coil antenna 301 that has generated a magnetic field exceeding the measurement range from the smart device 1702 to the vehicle V by short-range wireless communication. FIG. 22 shows an example when the magnetic field intensity by the coil antenna 301 exceeds the maximum measurement range of the smartphone magnetic sensor.

  As an exception 3-2, when the ECU 1701 receives a current adjustment request for the coil antenna 301 from the smart device 1702, the ECU 1701 reduces the value of the current flowing through the one or more coil antennas 301 that have generated a magnetic field exceeding the measurement range, A current is passed through the coil antenna 301. FIG. 23 shows an example of the case where the current of the coil 301 is lowered and the current is flowed again after FIG.

FIG. 20 is an explanatory diagram illustrating an example of how the current flows in each coil antenna 301 in the second embodiment. Graphs 2001-1 to 2001 shown in FIG. 20 show how current flows in the coil antennas 301-1 to 301-3, respectively. Further, I _{1 to} I ₃ in the graphs 2001 to _{1 to 3} are necessary pulse currents of the coil antennas 301-1 to 30 calculated in the determination 0.

As shown in FIG. 20, the ECU 1701 supplies the necessary pulse current to the coil antennas 301-1 to 301-3 so that the pulse vertices are at different times. More specifically, ECU1701 at time from time t ₁ to time t _2, the flow pulse of current to the coil antenna 301-1. Further, ECU1701 at time from time t ₂ to time t _3, flow 1 pulse of current to the coil antenna 301-2. Further, ECU1701 at time from time t ₃ to time t _4, flow 1 pulse of current to the coil antenna 301-3. In this way, by causing currents to flow between the coil antennas 301 at different times, interference between the respective magnetic fields can be prevented.

FIG. 21 is an explanatory diagram illustrating a position calculation example of the smart device 1702 according to the second embodiment. As shown in FIG. 20, it is assumed that the magnetic sensor 509 of the smart device 1702 detects the magnetic field strength as shown by a graph 2101 in FIG. 21 by applying a current to the coil antennas 301-1 to 301-3. The difference B _{1 in} the magnetic field intensity from time t ₁ to time t _{2 is} the magnetic field intensity generated by the coil antenna 301-1. Similarly, the difference B ₂ of the magnetic field strength from the time t ₂ to time t ₃ becomes a magnetic field strength coil antenna 301-2 caused, the difference B ₃ of the magnetic field strength from time t ₃ to time t _4, The magnetic field intensity generated by the coil antenna 301-3 is obtained.

The ECU 1701 calculates the distance between the smart device 1702 and each coil antenna 301 based on the magnetic field strength differences B _{1 to} B ₃ , and calculates the position of the smart device 1702 by trilateral surveying.

FIG. 22 is an explanatory diagram showing an example in which the magnetic field strength of the coil antenna 301 exceeds the maximum measurement range of the magnetic sensor 509. In FIG. 22, as indicated by graphs 2001-1 to 2001 in FIG. 22, when currents I _{1 to} I ₃ are passed through the coil antennas 301, the magnetic sensor 509 of the smart device 1702 is represented by a graph 2201 in FIG. 22. Assume that the magnetic field strength is detected as shown.

At this time, as shown by a graph 2201, the distance between the smart device 1702 and the coil antenna 301 is too short, and the measured magnetic field intensity may reach the magnetic sensor maximum measurement range of the magnetic sensor 509. In the example of the graph 2201, the measurement value of the magnetic field intensity generated from the coil antenna 301-1 reaches B _max that is the maximum measurement range of the magnetic sensor 509. In this case, the smart device 1702 notifies the current adjustment request of the coil antenna 301-1.

  For example, if the smart device 1702 stores in which order the current flows through the coil antennas 301-1 to 301-1, the coil antenna 301 that has generated the magnetic field strength of the maximum measurement range of the magnetic sensor 509. A current adjustment request including identification information may be notified. In addition, the smart device 1702 does not have to store the order in which the current flows through the coil antennas 301-1 to 301-3. In this case, the smart device 1702 may notify the current adjustment request including the order in which the currents flow to the coil antenna 301 that has generated the magnetic field strength of the maximum measurement range of the magnetic sensor 509.

  FIG. 23 is an explanatory diagram showing an example of the magnetic field strength when the value of the current passed through the coil antenna 301 is lowered. The ECU 1701 that has received the current adjustment request for the coil antenna 301-1 lowers the value of the current flowing through the coil antenna 301-1 and causes the current to flow through the coil antenna 301-1 again. A graph 2301 shown in FIG. 23 shows a state in which a current is passed through the coil antenna 301-1 when the current is lowered. It should be noted that the amount of current to be reduced is arbitrary. For example, the ECU 1701 may cause the current to flow at a value such as half of the required pulse current or 1/3. In addition, when the current is supplied again, the ECU 1701 does not need to supply the current to the coil antenna 301 that has been requested to adjust the current, and the coil antenna 301 that has not been requested to adjust the current.

A graph 2311 shown in FIG. 23 shows a measurement result of the magnetic sensor 509 when a current is passed through the coil antenna 301-1 as shown by a graph 2301. As shown by the graph 2311, the measured value of the magnetic field intensity generated from the coil antenna 301-1 does not reach B _max that is the maximum measurement range of the magnetic sensor 509. Thereby, the ECU 1701 can calculate the correct position of the smart device 1702.

  Next, the inside / outside determination sequence when the smart device 1702 is outside and inside the vehicle V will be described with reference to FIGS. 24 and 25. FIG. In addition, the case where the magnetic field strength of the coil antenna 301 exceeds the maximum measurement range of the magnetic sensor 509 in the inside / outside determination will be described with reference to FIGS. 26 and 27. FIG.

  FIG. 24 is an explanatory diagram showing a sequence for determining whether the smart device 1702 is outside the vehicle V. The processes in steps S2401 to S2407 shown in FIG. 24 are the same processes and the same processing results as steps S1101 to S1107 shown in FIG.

  The ECU 1701 that has received the notification of the completion of sensing preparation sends a necessary pulse current to each coil antenna 301 (steps S2408 to S2410).

  The smart device 1702 that has measured the magnetic field intensity generated from the coil antenna 301 by the magnetic sensor 509 notifies the ECU 1701 of the measured magnetic field intensity by short-range wireless communication (step S2411).

  Receiving the measured magnetic field strength, the ECU 1701 calculates the position of the smart device 1702 (step S2412). In the example of FIG. 24, it is determined that the calculated position of the smart device 1702 is outside the vehicle V, and the ECU 1701 locks the door 211 (step S2413).

  FIG. 25 is an explanatory diagram showing a sequence of inside / outside determination when the smart device 1702 is inside the vehicle V. The processes in steps S2501 to S2512 shown in FIG. 25 are the same processes and the same processing results as steps S2401 to S2412 shown in FIG.

  In the example of FIG. 25, it is determined that the calculated position of the smart device 1702 is inside the vehicle V, and the ECU 1701 generates an alarm (step S2513).

  FIG. 26 is an explanatory diagram showing a sequence of in-vehicle / out-of-vehicle determination when the smart device 1702 is outside the vehicle V and the exceptions 3-1 and 3-2 occur. Here, the exceptions 3-1 and 3-2 are when the magnetic field intensity of the coil antenna 301-1 exceeds the maximum measurement range of the magnetic sensor 509. The processes in steps S2601 to S2610 and S2614 to S2616 shown in FIG. 26 are the same processes and the same process results as steps S2401 to S2410 and S2411 to S2413 shown in FIG.

  Since the magnetic field intensity of the coil antenna 301-1 has exceeded the maximum measurement range of the magnetic sensor 509, the smart device 1702 notifies the current adjustment request of the coil antenna 301-1 (step S2611). The process of step S2611 corresponds to the above-described exception 3-1.

  The ECU 1701, which has received the current adjustment request for the coil antenna 301-1, performs the current downward adjustment (step S2612). Then, ECU 1701 causes the adjusted current to flow through coil antenna 301-1 (step S2613). The processing in steps S2612 and S2613 corresponds to the exception 3-2 described above.

  FIG. 27 is an explanatory diagram showing a sequence of in-vehicle / out-of-vehicle determination when the smart device 1702 is inside the vehicle V and the exceptions 3-1 and 3-2 occur. The processing in steps S2701 to S2715 shown in FIG. 27 is the same processing and the same processing result as steps S2601 to S2615 shown in FIG.

  In the example of FIG. 27, it is determined that the calculated position of the smart device 1702 is inside the vehicle V, and the ECU 1701 generates an alarm (step S2716).

  FIGS. 28 and 29 show flowcharts of the inside / outside determination processing performed by the ECU 1701 and the smart device 1702.

  FIG. 28 is a flowchart (No. 2) illustrating an example of the vehicle inside / outside determination processing procedure according to the second embodiment. FIG. 29 is a flowchart (part 3) illustrating an example of the vehicle inside / outside determination processing procedure according to the second embodiment. FIG. 30 is a flowchart (part 4) illustrating an example of the vehicle interior / exterior determination processing procedure according to the second embodiment.

  Here, the flowchart (part 1) showing the example of the in-vehicle / outside determination processing procedure in the second embodiment is merely described by replacing the flowchart of FIG. 13 with the ECU 1701 and the smart device 1702 as the execution subject. Omitted. Furthermore, the processing in steps S2801 to S2805 shown in FIG. 28 is the same as the processing in steps S1401 to S1405 in FIG.

  In step S2805: Yes, the ECU 1701 causes a necessary pulse current to flow through the coil antenna 301-1 (step S2806). After finishing the necessary pulse current flowing through the coil antenna 301-1, the ECU 1701 allows the necessary pulse current to flow through the coil antenna 301-2 (step S2807). After finishing the necessary pulse current flowing through the coil antenna 301-2, the ECU 1701 causes the necessary pulse current to flow through the coil antenna 301-3 (step S2808). After completing the process in step S2808, the ECU 1701 waits until receiving some notification from the smart device 1702.

  The smart device 1702 measures the magnetic field strength of each coil antenna 301 (step S2809). Then, the smart device 1702 determines whether the magnetic field strength of each coil antenna 301 is less than the maximum measurement range of the magnetic sensor 509 (step S2901). When the magnetic field intensity of the coil antenna 301 is within the maximum measurement range of the magnetic sensor 509 (step S2901: No), the smart device 1702 requests current adjustment of the coil antenna 301 that has reached the maximum measurement range by short-range wireless communication. ECU 1701 is notified (step S2902). Then, the smart device 1702 measures the magnetic strength of the coil antenna 301 after the current adjustment (step S2903). Then, the smart device 1702 proceeds to the process of step S2901.

  On the other hand, when it is less than the maximum measurement range of the magnetic sensor 509 (step S2901: Yes), the smart device 1702 notifies the ECU 1701 of the magnetic field strength of each coil antenna by short-range wireless communication (step S2904). Then, the smart device 1702 stops the magnetic sensor 509 (step S2905). After the process of step S2905 ends, the smart device 1702 ends the in-vehicle / outside determination process.

  The ECU 1701 waits until a notification is received by short-range wireless communication. When any notification is received, the ECU 1701 confirms the content of the notification (step S2906). If the content of the notification is a current adjustment request (step S2906: current adjustment request), the current is lowered and passed to the coil antenna 301 that has made the current adjustment request (step S2907). Then, the ECU 1701 proceeds to the process of step S2906.

  When the content of the notification is the magnetic field strength of each coil antenna 301 (step S2906: magnetic field strength of each coil antenna), ECU 1701 calculates the position of smart device 1702 from the magnetic field strength of each coil antenna 301 (step S3001). . Next, the ECU 1701 determines whether or not the position of the smart device 1702 is inside the vehicle V (step S3002). When the position of the smart device 1702 is not inside the vehicle V (step S3002: No), the ECU 1701 locks the door 211 (step S3003). On the other hand, when the position of the smart device 1702 is inside the vehicle V (step S3002: Yes), the ECU 1701 generates an alarm (step S3004). After the process of step S3003 or S3004 is completed, the ECU 1701 ends the in-vehicle / outside determination process.

  As described above, the inside / outside determination system 1700 causes the current to flow through the three or more coil antennas 301, and the measurement results obtained by measuring the strength of the magnetic field generated by passing the current through each coil antenna 301 with the magnetic sensor 509. Based on the above, the inside / outside determination is performed. As a result, the position of the smart device 1702 specified by the three or more coil antennas 301 can be compared with the range inside the vehicle V. Therefore, the vehicle inside / outside determination system 1700 can be compared with the vehicle inside / outside determination system 200. The accuracy of determination can be improved.

  Further, the vehicle interior / exterior determination system 1700 may reduce the current flowing through the coil antenna 301 when the magnetic field strength of the coil antenna 301 is within the maximum measurement range of the magnetic sensor 509. As a result, the inside / outside determination system 1700 can measure the correct magnetic field intensity by reducing the current even when the smart device 1702 is too close to the coil antenna 301 and the magnetic field intensity cannot be measured correctly. This makes it possible to determine whether the vehicle is inside or outside the vehicle.

  The in-vehicle / out-of-vehicle determination method described in the present embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. The vehicle inside / outside determination program is recorded on a computer-readable recording medium such as a hard disk, a flexible disk, a CD-ROM (Compact Disc-Read Only Memory), a DVD (Digital Versatile Disk), and is read from the recording medium by the computer. Is executed by. The vehicle inside / outside determination program may be distributed through a network such as the Internet.

  The following additional notes are disclosed with respect to the embodiment described above.

(Supplementary note 1) A vehicle inside / outside determination system in which a wireless communication device having a magnetic sensor and a vehicle inside / outside determination device are connected by short-range wireless communication,
The inside / outside determination device is
Connected to the coil installed inside the vehicle,
Notifying the inside / outside determination request to the wireless communication device by the short-range wireless communication,
When receiving a response to the inside / outside determination request from the wireless communication device, a current is passed through the coil,
The wireless communication device
A measurement result obtained by measuring the intensity of a magnetic field generated by flowing a current through the coil with the magnetic sensor is notified to the in-vehicle / outside determination device by the short-range wireless communication;
An in-vehicle / outside determination system for a wireless communication apparatus.

(Appendix 2) The vehicle inside / outside determination device is:
Based on the received measurement result, it is determined whether the wireless communication device is inside or outside the vehicle.
The wireless communication device in-vehicle / outside determination system according to Supplementary Note 1, wherein

(Supplementary note 3)
When a value indicating the resolution of the magnetic sensor is received by the short-range wireless communication, based on the value indicating the resolution of the magnetic sensor, a current value of a current flowing through the coil is calculated,
When receiving a response to the vehicle inside / outside determination request from the wireless communication device, based on the calculated current value, a current is passed through the coil.
The in-vehicle / out-of-vehicle determination system for a wireless communication device according to appendix 1 or 2,

(Supplementary Note 4) The vehicle inside / outside determination device includes:
It is connected to a magnetic sensor installed at a position farthest from the coil inside the vehicle,
Determining whether the wireless communication device is inside or outside the vehicle, based on a comparison result between the measurement result obtained by measuring the intensity of the generated magnetic field with the magnetic sensor and the measurement result received;
The vehicle inside / outside determination system for a wireless communication device according to any one of Supplementary notes 1 to 3, wherein

(Appendix 5) The vehicle inside / outside determination device includes:
Connected to three or more coils installed inside the vehicle,
When receiving a response to the vehicle inside / outside determination request from the wireless communication device, a current is passed through the coils at different times between the coils of the three or more coils.
The wireless communication device
Notifying the in-vehicle / out-of-vehicle determination device by the short-range wireless communication of a measurement result obtained by measuring the intensity of a magnetic field generated by flowing a current through each coil with the magnetic sensor,
The vehicle inside / outside determination system for a wireless communication device according to any one of Supplementary notes 1 to 3, wherein

(Appendix 6) The wireless communication device
From the measurement result obtained by measuring the intensity of the magnetic field generated by passing a current through each coil with the magnetic sensor, the coil that has generated a magnetic field having an intensity that matches the maximum value that can be measured by the magnetic sensor is identified. ,
A request to reduce the current value of the current flowing through the identified coil is notified to the inside / outside determination device by the short-range wireless communication,
The inside / outside determination device is
When receiving the request, based on a current value lower than the current value of the current that has been passed through the identified coil, a current is passed through the identified coil.
The wireless communication device in-vehicle / outside determination system according to Supplementary Note 5, wherein

(Supplementary note 7)
It is possible to detect the presence or absence of operation of the engine installed in the vehicle, the opening and closing of the door of the vehicle, and the presence or absence of a load applied to the seat installed in the vehicle,
When the operation of the engine is stopped, the door of the vehicle is opened and closed, there is no load applied to the seat, and the wireless communication device is inside the vehicle, the wireless communication device Generate an alarm to the user,
The in-vehicle / out-of-vehicle determination system for a wireless communication apparatus according to Supplementary Note 2, wherein

(Appendix 8) The vehicle inside / outside determination device includes:
It is possible to detect whether or not a button for operating an engine installed in the vehicle is pressed,
When the button is pressed and the wireless communication device is determined to be outside the vehicle, an alarm is generated for a user of the wireless communication device.
The inside / outside determination system according to Supplementary Note 2, wherein

(Supplementary note 9) A vehicle inside / outside determination device connected to a wireless communication device having a magnetic sensor by short-range wireless communication,
Connected to the coil installed inside the vehicle,
When the vehicle communication request is notified to the wireless communication device by the short-range wireless communication, and a response to the vehicle internal / external determination request is received from the wireless communication device, a current is supplied to the coil, and a current is supplied to the coil. A control unit that receives a measurement result obtained by measuring the intensity of the magnetic field generated by flowing with the magnetic sensor from the wireless communication device by the short-range wireless communication;
An in-vehicle / out-of-vehicle determination device for a wireless communication device, comprising:

(Appendix 10) A computer connected to a wireless communication device having a magnetic sensor by short-range wireless communication and connected to a coil installed inside the vehicle.
Notifying the inside / outside determination request to the wireless communication device by the short-range wireless communication,
When receiving a response to the inside / outside determination request from the wireless communication device, a current is passed through the coil,
A measurement result obtained by measuring the intensity of a magnetic field generated by flowing a current through the coil with the magnetic sensor is received from the wireless communication device by the short-range wireless communication.
A vehicle inside / outside determination control program characterized by executing processing.

100, 200, 1700 Inside / outside determination system 101 Inside / outside determination apparatus 102 Wireless communication apparatus 111 Coil 112 Magnetic sensor 201 ECU
202 Smart device 211 Door 212 Seat 301 Coil antenna 302 Magnetic sensor 600, 610, 1710, 1720 Control unit 601, 611, 1711, 1721 Communication unit 602 Coil antenna control unit 603, 612 Magnetic sensor control unit 604 Alighting determination unit 605 Inside / outside of vehicle Determination unit 606 Alarm generation unit 607 Door control unit 1722 identification unit

Claims (8)

A vehicle inside / outside determination system in which a wireless communication device having a magnetic sensor and a vehicle inside / outside determination device are connected by short-range wireless communication,
The inside / outside determination device is
Connected to the coil installed inside the vehicle,
Notifying the inside / outside determination request to the wireless communication device by the short-range wireless communication,
When receiving a response to the inside / outside determination request from the wireless communication device, a current is passed through the coil,
The wireless communication device
A measurement result obtained by measuring the intensity of a magnetic field generated by flowing a current through the coil with the magnetic sensor is notified to the in-vehicle / outside determination device by the short-range wireless communication;
An in-vehicle / outside determination system for a wireless communication apparatus. The inside / outside determination device is
Based on the received measurement result, it is determined whether the wireless communication device is inside or outside the vehicle.
The in-vehicle / outside determination system for a wireless communication apparatus according to claim 1. The inside / outside determination device is
When a value indicating the resolution of the magnetic sensor is received by the short-range wireless communication, based on the value indicating the resolution of the magnetic sensor, a current value of a current flowing through the coil is calculated,
When receiving a response to the vehicle inside / outside determination request from the wireless communication device, based on the calculated current value, a current is passed through the coil.
The in-vehicle / outside determination system for a wireless communication device according to claim 1 or 2. The inside / outside determination device is
It is connected to a magnetic sensor installed at a position farthest from the coil inside the vehicle,
Determining whether the wireless communication device is inside or outside the vehicle, based on a comparison result between the measurement result obtained by measuring the intensity of the generated magnetic field with the magnetic sensor and the measurement result received;
The in-vehicle / outside determination system for a wireless communication device according to any one of claims 1 to 3. The inside / outside determination device is
Connected to three or more coils installed inside the vehicle,
When receiving a response to the vehicle inside / outside determination request from the wireless communication device, a current is passed through the coils at different times between the coils of the three or more coils.
The wireless communication device
Notifying the in-vehicle / out-of-vehicle determination device by the short-range wireless communication of a measurement result obtained by measuring the intensity of a magnetic field generated by flowing a current through each coil with the magnetic sensor,
The in-vehicle / outside determination system for a wireless communication device according to any one of claims 1 to 3. The wireless communication device
From the measurement result obtained by measuring the intensity of the magnetic field generated by passing a current through each coil with the magnetic sensor, the coil that has generated a magnetic field having an intensity that matches the maximum value that can be measured by the magnetic sensor is identified. ,
A request to reduce the current value of the current flowing through the identified coil is notified to the inside / outside determination device by the short-range wireless communication,
The inside / outside determination device is
When receiving the request, based on a current value lower than the current value of the current that has been passed through the identified coil, a current is passed through the identified coil.
The in-vehicle / outside determination system for a wireless communication device according to claim 5. A vehicle inside / outside determination device connected by a short-range wireless communication with a wireless communication device having a magnetic sensor,
Connected to the coil installed inside the vehicle,
When the vehicle communication request is notified to the wireless communication device by the short-range wireless communication, and a response to the vehicle internal / external determination request is received from the wireless communication device, a current is supplied to the coil, and a current is supplied to the coil. A control unit that receives a measurement result obtained by measuring the intensity of the magnetic field generated by flowing with the magnetic sensor from the wireless communication device by the short-range wireless communication;
An in-vehicle / out-of-vehicle determination device for a wireless communication device, comprising: Connected to a wireless communication device having a magnetic sensor by short-range wireless communication, connected to a coil installed inside the vehicle,
Notifying the inside / outside determination request to the wireless communication device by the short-range wireless communication,
When receiving a response to the inside / outside determination request from the wireless communication device, a current is passed through the coil,
A measurement result obtained by measuring the intensity of a magnetic field generated by flowing a current through the coil with the magnetic sensor is received from the wireless communication device by the short-range wireless communication.
A vehicle inside / outside determination control program characterized by executing processing.

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