Vehicle-mounted detection system and server device

Abstract

To provide a vehicle-mounted detection system capable of detecting objects left inside a vehicle with high accuracy.SOLUTION: A vehicle-mounted detection system includes: a proximity wireless device 2 that transmits radio waves for proximity wireless communication; a vehicle-mounted wireless device 3 mounted on a vehicle 10 and capable of detecting radio waves transmitted by the proximity wireless device 2; a portable wireless device 5 carried by a user and capable of detecting radio waves transmitted by the proximity wireless device 2; and a server device 6 configured to be capable of communicating with the vehicle-mounted wireless device 3 and the portable wireless device 5. The vehicle-mounted wireless device 3 uploads information on the proximity wireless device 2 detected in the vehicle to the server device 6 at a predetermined timing, and the portable wireless device 5 uploads information on the proximity wireless device 2 detected around the user to the server device 6 at a predetermined timing. The server device 6 specifies the proximity wireless device 2 remaining in the vehicle based on the information on the proximity wireless device 2 uploaded by the vehicle-mounted wireless device 3 and the information on the proximity wireless device 2 uploaded by the portable wireless device 5.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an in-vehicle sensing system. [Background technology]

[0002] Conventionally, there are beacons and electronic tags that use near-field communication such as RFID (Radio Frequency Identification), Bluetooth (registered trademark), and Bluetooth Low Energy.

[0003] Patent Document 1 describes that when an in-vehicle monitoring device mounted on a vehicle detects an RF tag held by a monitored object in the vehicle cabin and a passenger gets off the vehicle, if the identification information of the RF tag is registered in a notification target list, a notification is sent to the corresponding mobile terminal registered in the notification target list. The notification target list is registered in the vehicle by wireless communication from a personal computer via a public line network. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 7023569 Summary of the Invention [Problem to be solved by the invention]

[0005] RFID can detect signals over a maximum range of about 10 meters, while Bluetooth Low Energy can detect signals over a maximum range of about 30 meters.

[0006] For this reason, even if the RF tag is removed from the vehicle, it can still be detected for a while, which may lead to the invention described in Patent Document 1 misjudging that the tag has been left behind. In addition, the RF tag must continue to be detected for the period during which the RF tag is removed from the vehicle and is considered to be undetectable, which drains the vehicle's battery.

[0007] Therefore, an object of the present invention is to provide an in-vehicle detection system that can accurately detect items left behind in a vehicle. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention provides an in-vehicle detection system comprising a proximity radio device that transmits radio waves for proximity wireless communication, an in-vehicle wireless device mounted in a vehicle and capable of detecting radio waves transmitted by the proximity radio device, a portable wireless device carried by a user and capable of detecting radio waves transmitted by the proximity radio device, and a server device configured to communicate with the in-vehicle wireless device and the portable wireless device, wherein the in-vehicle wireless device uploads information about the proximity radio device detected within the vehicle to the server device at a predetermined timing, the portable wireless device uploads information about the proximity radio device detected in the vicinity of the user to the server device at a predetermined timing, and the server device identifies the proximity radio device left in the vehicle based on the information about the proximity radio device uploaded from the in-vehicle wireless device and the information about the proximity radio device uploaded from the portable wireless device. Effect of the Invention

[0009] In this way, according to the present invention, items left behind in a vehicle can be detected with high accuracy. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a schematic diagram of an in-vehicle detection system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a diagram showing an example of a detection result of a proximity wireless device by the vehicle-mounted detection system according to one embodiment of the present invention. [Diagram 3] FIG. 3 is a diagram showing an example of a state of the vehicle-mounted detection system according to one embodiment of the present invention when the ignition is off. [Figure 4]FIG. 4 is a diagram showing an example of a state in which the vehicle-mounted detection system according to one embodiment of the present invention determines whether a vehicle has been left behind after the ignition is turned off. [Diagram 5] FIG. 5 is a diagram showing an example of a state in which the abandoned vehicle determination is not performed after the ignition is turned off in the vehicle-mounted detection system according to the embodiment of the present invention. [Figure 6] FIG. 6 is a sequence diagram showing the procedure of the abandoned object determination process of the vehicle-mounted detection system according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] An in-vehicle detection system according to one embodiment of the present invention is an in-vehicle detection system comprising a proximity radio device that emits radio waves for proximity wireless communication, an in-vehicle wireless device mounted in a vehicle and capable of detecting radio waves emitted by the proximity radio device, a portable wireless device carried by a user and capable of detecting radio waves emitted by the proximity radio device, and a server device configured to communicate with the in-vehicle wireless device and the portable wireless device, wherein the in-vehicle wireless device uploads information about the proximity radio device detected within the vehicle at a predetermined timing to the server device, the portable wireless device uploads information about the proximity radio device detected around the user at a predetermined timing to the server device, and the server device is configured to identify the proximity radio device left in the vehicle based on the information about the proximity radio device uploaded from the in-vehicle wireless device and the information about the proximity radio device uploaded from the portable wireless device.

[0012] As a result, the vehicle-mounted detection system according to one embodiment of the present invention can accurately detect items left behind in the vehicle. EXAMPLES

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an in-vehicle detection system according to an embodiment of the present invention will be described in detail with reference to the drawings.

[0014] In FIG. 1, an in-vehicle detection system 1 according to an embodiment of the present invention includes a proximity wireless device 2, an in-vehicle wireless device 3, a data communication device 4, a portable wireless device 5, and a server device 6.

[0015] The proximity wireless device 2 performs proximity wireless communication such as RFID or Bluetooth Low Energy. For example, in the case of RFID, the proximity wireless device 2 does not have a power source such as a battery and operates using received radio waves as power. When the proximity wireless device 2 receives radio waves, it starts up and returns information including its own identification information. The proximity wireless device 2 is held by an object brought into the vehicle 10. The proximity wireless device 2 is formed of an electronic tag such as an IC (Integrated Circuit) tag or an RF (Radio Frequency) tag.

[0016] The in-vehicle wireless device 3 is mounted on the vehicle 10 and detects the proximity wireless device 2 by proximity wireless communication such as RFID or Bluetooth Low Energy. For example, the in-vehicle wireless device 3 emits radio waves in a predetermined direction and detects the presence of the proximity wireless device 2 by receiving radio waves transmitted from the proximity wireless device 2 that has been activated upon receiving the radio waves. The in-vehicle wireless device 3 is, for example, configured by an in-vehicle car navigation system.

[0017] The data communication device 4 is mounted on the vehicle 10 and communicates with a server device 6 outside the vehicle via a public wireless communication network to transmit and receive information. The data communication device 4 is formed of, for example, a DCM (Data Communication Module).

[0018] The portable wireless device 5 is carried by a user and detects the proximity wireless device 2 by proximity wireless communication such as RFID or Bluetooth Low Energy. For example, the portable wireless device 5 detects the presence of the proximity wireless device 2 by emitting radio waves in a predetermined direction and receiving radio waves from the proximity wireless device 2 that has been activated by receiving the radio waves. The portable wireless device 5 communicates with a server device 6 outside the vehicle via a public wireless communication network to transmit and receive information. The portable wireless device 5 is, for example, a smartphone.

[0019] The server device 6 is configured by a computer device. This computer device includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), a non-volatile storage medium such as a hard disk device, various input / output ports, a display device, and input devices such as a mouse and a keyboard device.

[0020] The ROM and hard disk drive of this computer device store programs for controlling the computer device. That is, the CPU uses the RAM as a working area to execute the programs stored in the ROM and hard disk drive, whereby the computer device controls this embodiment.

[0021] In this embodiment, the in-vehicle wireless device 3 transmits information about the nearby wireless devices 2 detected inside the vehicle to the server device 6 via the data communication device 4 at a predetermined timing.

[0022] The mobile wireless device 5 transmits to the server device 6 information on the nearby wireless devices 2 detected around the user at a predetermined timing.

[0023] The in-vehicle wireless device 3 and the portable wireless device 5 transmit information to the server device 6 including identification information indicating whether it is an in-vehicle wireless device 3 or a portable wireless device 5, identification information of the detected nearby wireless device 2, and identification information of the detection timing described below.

[0024] The server device 6 identifies the proximity wireless device 2 left inside the vehicle based on the information of the proximity wireless device 2 received from the in-vehicle wireless device 3 and the information of the proximity wireless device 2 received from the mobile wireless device 5.

[0025] The in-vehicle wireless device 3 transmits to the server device 6 information on the nearby wireless devices 2 detected inside the vehicle 10 when the system of the vehicle 10 is started (when the ignition is turned on) and when the system of the vehicle 10 is stopped (when the ignition is turned off).

[0026] The in-vehicle wireless device 3 may transmit to the server device 6, for example, the detection result of the nearby wireless device 2 at a predetermined timing after the ignition is detected as being on.

[0027] The in-vehicle wireless device 3 may be configured to transmit to the server device 6 the detection result of the proximity wireless device 2 when it detects that a shift lever (not shown) has been put into D range by a user operation after the ignition is turned on.

[0028] The in-vehicle wireless device 3 may be configured to transmit to the server device 6 a detection result of the proximity wireless device 2 when it detects that the doors of the vehicle 10 have been centrally locked after the ignition has been detected as being on.

[0029] The in-vehicle wireless device 3 may be configured to transmit to the server device 6 the detection result of the proximity wireless device 2 when it detects that the speed of the vehicle 10 has reached 30 km / h after the ignition is turned on.

[0030] The detection of the nearby wireless device 2 when the system of the vehicle 10 is started up may be performed by the portable wireless device 5.

[0031] The portable wireless device 5 is adapted to be connected to, for example, an on-board car navigation system via Bluetooth, and detects the system startup of the vehicle 10 when the Bluetooth connection is established.

[0032] The in-vehicle wireless device 3 may transmit to the server device 6, for example, the detection result of the nearby wireless device 2 at a predetermined timing after it is detected that the ignition is turned off.

[0033] The in-vehicle wireless device 3 may be configured to transmit to the server device 6 the detection result of the proximity wireless device 2 when it detects that the doors have been locked using a remote keyless entry system or the like after the ignition has been turned off.

[0034] The in-vehicle wireless device 3 may transmit to the server device 6 the detection result of the nearby wireless device 2, for example, after a predetermined time has elapsed since it was detected that the ignition was turned off.

[0035] The predetermined time is set based on, for example, the outside air temperature. For example, the higher the outside air temperature is, the shorter the predetermined time is set.

[0036] The predetermined time is set based on, for example, the difference between the outside air temperature and the air conditioner set temperature. For example, the smaller the difference between the outside air temperature and the air conditioner set temperature, the shorter the predetermined time is set.

[0037] When a predetermined condition is met after the system of the vehicle 10 is stopped, the portable wireless device 5 transmits to the server device 6 information on the proximity wireless devices 2 detected in the vicinity of the user.

[0038] The portable wireless device 5 is connected to, for example, an on-board car navigation system via Bluetooth, and detects the system stop of the vehicle 10 when the Bluetooth is disconnected.

[0039] Furthermore, when the in-vehicle wireless device 3 detects a system shutdown of the vehicle 10, it may notify the mobile wireless device 5 of the same.

[0040] The mobile wireless device 5 may transmit to the server device 6, for example, a detection result of the nearby wireless device 2 at a predetermined timing after a system stop of the vehicle 10 is detected.

[0041] The mobile wireless device 5 may transmit to the server device 6, for example, the detection result of the nearby wireless device 2 after a predetermined time has elapsed since the system stop of the vehicle 10 was detected.

[0042] The predetermined time is set based on, for example, the outside air temperature. For example, the higher the outside air temperature is, the shorter the predetermined time is set.

[0043] The predetermined time is set based on the difference between the outside air temperature and the temperature inside the vehicle cabin, for example. The predetermined time is set to be shorter as the difference between the outside air temperature and the temperature inside the vehicle cabin is smaller.

[0044] The portable wireless device 5 may be configured to transmit to the server device 6, for example, the detection result of the proximity wireless device 2 when it detects that it has moved a predetermined distance away from the vehicle 10 after a system stop of the vehicle 10 is detected.

[0045] The mobile wireless device 5 stores, for example, the location information when the system stop of the vehicle 10 is detected, and detects that it has moved a predetermined distance away from the vehicle 10 based on the distance between that location information and its own location information.

[0046] The predetermined distance is set to, for example, a distance longer than the upper limit of the distance at which the proximity wireless device 2 can receive radio waves from the mobile wireless device 5.

[0047] The in-vehicle wireless device 3 and the portable wireless device 5 transmit information to the server device 6 including identification information indicating whether it is an in-vehicle wireless device 3 or a portable wireless device 5, identification information of the detected nearby wireless device 2, and at least information indicating whether the detection was made when the ignition was turned on or off.

[0048] When the in-vehicle wireless device 3 and the mobile wireless device 5 are capable of acquiring their own position information, the information to be transmitted to the server device 6 may include the position information.

[0049] In this case, the server device 6 can identify the proximity wireless device 2 that has been taken out of the vehicle 10 based on the detection result of the proximity wireless device 2 when it detects that the portable wireless device 5 has moved a predetermined distance away from the location where the system stop of the vehicle 10 was detected.

[0050] The server device 6 identifies the proximity wireless device 2 remaining in the vehicle from the difference between a first identification result that identifies the proximity wireless device 2 present in the vehicle based on information of the proximity wireless device 2 detected inside the vehicle from the in-vehicle wireless device 3 when the system of the vehicle 10 is started and when the system of the vehicle 10 is stopped, and a second identification result that identifies the proximity wireless device 2 taken out of the vehicle 10 based on information of the proximity wireless device 2 detected around the user when a predetermined condition is met after the system of the vehicle 10 is stopped from the portable wireless device 5.

[0051] FIG. 2 shows examples of detection results of the in-vehicle wireless device 3 and the portable wireless device 5 for the nearby wireless devices 2 A to F received by the server device 6 when the ignition is on and off.

[0052] The server device 6 identifies the nearby wireless devices 2 (the nearby wireless devices 2 marked with diagonal lines B to D in the figure) detected by the in-vehicle wireless device 3 both when the ignition is on and when the ignition is off as the nearby wireless devices 2 present in the vehicle.

[0053] The server device 6 identifies the proximity wireless device 2 detected by the portable wireless device 5 (the proximity wireless devices 2 B and C in the figure) as the proximity wireless device 2 taken out of the vehicle .

[0054] The server device 6 identifies the proximity wireless device 2 D, which is the difference between the proximity wireless devices 2 B to D identified as the proximity wireless devices 2 present in the vehicle and the proximity wireless devices 2 B and C identified as the proximity wireless devices 2 taken out of the vehicle 10, as the proximity wireless device 2 left in the vehicle.

[0055] When the ignition is turned off, the detection result and location information of the nearby wireless device 2 are transmitted to the server device 6 from at least one of the in-vehicle wireless device 3 and the portable wireless device 5. As shown in FIG. 3, the in-vehicle wireless device 3 is no longer able to detect the nearby wireless device 2, and communication via the data communication device 4 is also no longer possible.

[0056] Thereafter, as shown in FIG. 4, when it is detected that the user carrying the portable wireless device 5 has left the vehicle 10 and traveled a predetermined distance away, the server device 6 performs an abandonment determination, and if it determines that the nearby wireless device 2 has been abandoned, it notifies the portable wireless device 5 if notification is required.

[0057] 5, when only the proximity wireless device 2 has left the vehicle 10, it is determined that the device has been abandoned based only on the detection results of the in-vehicle wireless device 3 and the portable wireless device 5. In such a case, by using the position information of the vehicle 10 when the ignition is off and the position information of the portable wireless device 5, it can be determined that the portable wireless device 5 has not been abandoned if it is near the vehicle 10.

[0058] The abandoned object determination process performed by the vehicle-mounted detection system 1 according to this embodiment configured as above will be described with reference to FIG.

[0059] In step S1, the in-vehicle wireless device 3 determines whether the ignition is turned on.

[0060] If it is determined that the ignition is turned on, the in-vehicle wireless device 3 executes the process of step S2. If it is determined that the ignition is not turned on, the in-vehicle wireless device 3 executes the process of step S1.

[0061] In step S2, the in-vehicle wireless device 3 searches for the nearby wireless device 2 by transmitting radio waves.

[0062] In step S3, when the proximity wireless device 2 receives the radio wave from the in-vehicle wireless device 3, it starts up and returns its own identification information.

[0063] In step S4, upon receiving the reply from the nearby wireless device 2, the in-vehicle wireless device 3 uploads the detection result to the server device 6.

[0064] In step S5, the in-vehicle wireless device 3 determines whether the ignition is turned off.

[0065] If it is determined that the ignition is turned off, the in-vehicle wireless device 3 executes the process of step S6. If it is determined that the ignition is not turned on, the in-vehicle wireless device 3 executes the process of step S5.

[0066] In step S6, the in-vehicle wireless device 3 notifies the mobile wireless device 5 that the ignition has been turned off. After executing the process of step S6, the in-vehicle wireless device 3 executes the process of step S7.

[0067] In step S7, the in-vehicle wireless device 3 searches for the nearby wireless device 2 by transmitting radio waves.

[0068] In step S8, when the proximity wireless device 2 receives the radio wave from the in-vehicle wireless device 3, it starts up and returns its own identification information.

[0069] In step S9, upon receiving the reply from the nearby wireless device 2, the in-vehicle wireless device 3 uploads the detection result to the server device 6.

[0070] In step S10, the portable wireless device 5 determines whether or not a predetermined condition has been met, such as a predetermined time having elapsed since the system stop of the vehicle 10 was detected.

[0071] If it is determined that the predetermined condition is met, the mobile wireless device 5 executes the process of step S11. If it is determined that the predetermined condition is not met, the mobile wireless device 5 executes the process of step S10.

[0072] In step S11, the portable wireless device 5 searches for the nearby wireless device 2 by transmitting radio waves.

[0073] In step S12, when the proximity wireless device 2 receives radio waves from the mobile wireless device 5, it starts up and returns its own identification information.

[0074] In step S13, upon receiving the reply from the nearby wireless device 2, the portable wireless device 5 uploads the detection result to the server device 6.

[0075] In step S14, the server device 6 compares the detection result of the in-vehicle wireless device 3 with the detection result of the portable wireless device 5 to determine whether the nearby wireless device 2 has been abandoned. After executing the process of step S14, the server device 6 executes the process of step S15.

[0076] In step S15, the server device 6 determines whether or not it is necessary to notify the nearby wireless device 2 that has been left behind.

[0077] If it is determined that the notification is necessary, the server device 6 notifies the mobile wireless device 5 that the nearby wireless device 2 has been left behind. If it is determined that the notification is not necessary, the server device 6 ends the process.

[0078] In step S16, the portable wireless device 5 notifies the user that the proximity wireless device 2 has been left behind. After executing the process of step S16, the portable wireless device 5 ends the process.

[0079] Thus, in this embodiment, the server device 6 identifies the proximity wireless device 2 left inside the vehicle based on information about the proximity wireless device 2 detected inside the vehicle at a specified timing uploaded from the in-vehicle wireless device 3 and information about the proximity wireless device 2 detected around the user at a specified timing uploaded from the portable wireless device 5.

[0080] As a result, the proximity wireless device 2 left in the vehicle is identified using information about the proximity wireless device 2 detected around the user by the portable wireless device 5. Therefore, the proximity wireless device 2 taken by the user and the proximity wireless device 2 left in the vehicle 10 can be distinguished, and items left behind in the vehicle 10 can be detected with high accuracy.

[0081] Furthermore, the proximity wireless devices 2 remaining in the vehicle are identified in the server device 6. Therefore, it is not necessary to start up the DCM or BCM (Body Control Module) every time the proximity wireless devices 2 are detected or compared, and it is possible to reduce the amount of power consumption in the vehicle 10.

[0082] Furthermore, there is no need to store the detection results in the vehicle until the comparison is complete, which reduces the amount of memory used in the vehicle.

[0083] Moreover, the in-vehicle wireless device 3 transmits to the server device 6 information on the nearby wireless devices 2 detected inside the vehicle when the system of the vehicle 10 is started up and when the system of the vehicle 10 is stopped.

[0084] As a result, information on the proximity wireless devices 2 detected inside the vehicle 10 when the system of the vehicle 10 is started and when the system of the vehicle 10 is stopped is transmitted to the server device 6. Therefore, by comparing the time when the system of the vehicle 10 is started and the time when the system is stopped, it is possible to suitably identify the proximity wireless devices 2 present in the vehicle 10.

[0085] Furthermore, when a predetermined condition is met after the system of the vehicle 10 is stopped, the portable wireless device 5 transmits to the server device 6 information on the proximity wireless devices 2 detected in the vicinity of the user.

[0086] As a result, when a predetermined condition is met after the system of the vehicle 10 is stopped, information on the proximity wireless device 2 detected around the user is transmitted to the server device 6. Therefore, it is possible to suitably identify the proximity wireless device 2 taken out by the user.

[0087] The server device 6 identifies the proximity wireless device 2 remaining in the vehicle from the difference between a first identification result that identifies the proximity wireless device 2 present in the vehicle based on information of the proximity wireless device 2 detected inside the vehicle when the system of the vehicle 10 is started and when the system of the vehicle 10 is stopped, which is received from the in-vehicle wireless device 3, and a second identification result that identifies the proximity wireless device 2 taken out of the vehicle 10 based on information of the proximity wireless device 2 detected around the user when a predetermined condition is met after the system of the vehicle 10 is stopped, which is received from the portable wireless device 5.

[0088] As a result, the proximity wireless device 2 left in the vehicle is identified from the difference between the first identification result that identifies the proximity wireless device 2 present in the vehicle and the second identification result that identifies the proximity wireless device 2 taken out of the vehicle 10. Therefore, the proximity wireless device 2 taken out by the user and the proximity wireless device 2 left in the vehicle 10 can be distinguished, and items left behind in the vehicle 10 can be detected with high accuracy.

[0089] Furthermore, the proximity wireless devices 2 remaining in the vehicle are identified in the server device 6. Therefore, it is not necessary to start the DCM or BCM every time a proximity wireless device 2 is detected or compared, and power consumption in the vehicle 10 can be reduced.

[0090] In addition, there is no need to store the detection results in the vehicle until comparison is complete, which reduces the amount of memory used in the vehicle.

[0091] Although an embodiment of the invention has been disclosed, it will be apparent to one of ordinary skill in the art that modifications may be made thereto without departing from the spirit and scope of the invention, and it is intended that all such modifications and equivalents be included in the following claims. [Explanation of symbols]

[0092] 1. Vehicle-mounted detection system 2. Proximity wireless devices 3 In-vehicle wireless equipment 4 Data communication equipment 5. Portable wireless devices 6 Server equipment 10 Vehicles

Claims

1. a proximity wireless device that transmits radio waves for proximity wireless communication; an in-vehicle wireless device that is mounted in a vehicle and is capable of detecting radio waves transmitted by the proximity wireless device; a portable wireless device carried by a user and capable of detecting radio waves transmitted by the proximity wireless device; A vehicle-mounted detection system including a server device configured to be able to communicate with the vehicle-mounted wireless device and the mobile wireless device, the in-vehicle wireless device uploads information about the nearby wireless devices detected within the vehicle to the server device at a predetermined timing; the portable wireless device uploads information about the proximity wireless devices detected around the user at a predetermined timing to the server device; The server device is an in-vehicle detection system that identifies the proximity wireless device left in the vehicle based on information about the proximity wireless device uploaded from the in-vehicle wireless device and information about the proximity wireless device uploaded from the portable wireless device.

2. 2. The vehicle-mounted detection system according to claim 1, wherein the vehicle-mounted wireless device uploads information about the proximity wireless devices detected within the vehicle to the server device when the system of the vehicle is started and when the system of the vehicle is stopped.

3. The vehicle-mounted detection system according to claim 1 , wherein the portable wireless device uploads information about the proximity wireless devices detected in the vicinity of the user to the server device when a predetermined condition is met after the system of the vehicle is stopped.

4. A server device to which information on a proximity wireless device that transmits radio waves for proximity wireless communication and is detected in a vehicle at a predetermined timing and information on the proximity wireless device that is detected around a user at a predetermined timing are uploaded, a first identification result that identifies the proximity wireless device present in the vehicle based on information of the proximity wireless device detected when the system of the vehicle is started and when the system of the vehicle is stopped; A server device that identifies the proximity wireless device left in the vehicle by comparing the first identification result, which identifies the proximity wireless device taken out of the vehicle, with a second identification result, which identifies the proximity wireless device detected around the user when a predetermined condition is met after the vehicle's system is stopped.

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