JP2010055362A - Vehicular notification apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular notification apparatus that can accurately notify something left behind. <P>SOLUTION: The vehicular notification apparatus 10 for notifying occupants of something left behind includes an information detection means 21 for detecting ID information about belongings loaded in a vehicle by occupants of the vehicle, a grouping means 23 for grouping the ID information about the belongings detected by the information detection means 21 by the owner of belongings, a determination means 24 for comparing ID information currently detected by the information detection means 21 with the ID information previously detected by the information detection means 21 and grouped by the grouping means 23 to determine whether there is anything left behind, and a notification means 25, 52, 54 for, if the determination means 24 determines that there is something left behind, notifying the occupants of something left behind. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle notification device that notifies an occupant that there is something left behind.

  2. Description of the Related Art Conventionally, as a vehicle notification device for notifying a passenger that there is a forgotten item, the ID or type of the item by wirelessly communicating with a tag (RFID tag) of the item (carrying item) carried by the vehicle occupant on the vehicle Is detected, the presence or absence of a forgotten item is determined according to the detection result, and the passenger is informed that there is a forgotten item based on the determination result (see, for example, Patent Document 1). In the above-mentioned conventional apparatus, for example, the types of ski-related tools such as ski clothes, skis, ski stocks, and ski shoes are stored as one set in the database. When a part of ski-related equipment cannot be detected at the time of departure, the fact that there is something left behind is displayed on the in-vehicle display. Moreover, in the said conventional apparatus, it communicates with the other vehicle registered into the group, and can know the property mounted on the other vehicle.

  In addition, referring to a database in which an outing place (outing purpose) and belongings are stored in association with each other, it is known to determine whether there is a forgotten item based on the outing place (outing purpose) and belongings detected this time. (For example, refer to Patent Document 2).

A communication device that detects the position of a tag based on the arrival direction of radio waves from a tag (RFID tag) is known (for example, see Patent Document 3).
JP-A-2005-284771 JP-A-2005-173989 JP 2006-10345 A

  However, in the configurations described in Patent Documents 1 and 2, since the presence or absence of forgotten items is determined for each vehicle (or for each of a plurality of vehicles registered in a group), the presence or absence of forgotten items cannot be determined for each occupant. Therefore, the accuracy of determining the presence or absence of forgotten items is inevitably lowered. For example, in the configuration described in Patent Document 1 above, when going home from the outside, it is checked whether the ID information of the detected belongings includes all the ID information of the detected belongings when leaving the home. Therefore, when one of a plurality of passengers gets off the road, it may be determined that he / she has forgotten to load the belongings of the passenger. In this case, the notification of forgotten items is only troublesome for the passenger.

  Further, unlike the configurations described in Patent Documents 1 and 2, the configuration described in Patent Document 3 does not determine the presence or absence of a forgotten item, and therefore cannot notify that there is a forgotten item.

  This invention is made in view of the above, Comprising: It aims at provision of the alerting | reporting apparatus for vehicles which can alert | report accurately that there is a thing left behind.

In order to achieve the above object, the present invention provides a vehicle notification device for notifying a passenger that there is something left behind,
Information detecting means for detecting ID information of belongings carried by the vehicle occupant on the vehicle;
Grouping means for grouping ID information of the belongings detected by the information detecting means for each owner of the belongings;
A determination unit that compares the ID information detected last time by the information detection unit and grouped by the grouping unit with the ID information detected this time by the information detection unit, and determines whether or not there is a forgotten item;
And a notifying unit for notifying the passenger that there is a forgotten item when the determining unit determines that there is a forgotten item.

  ADVANTAGE OF THE INVENTION According to this invention, the alerting | reporting apparatus for vehicles which can alert | report with precision that there is a thing left behind is obtained.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a system configuration diagram showing an embodiment of a vehicle alarm device according to the present invention. FIG. 2 is a top view showing an example of a vehicle mounted state of the tag reader. As shown in FIG. 1, the vehicle notification device 10 is configured around an electronic control unit 20 (hereinafter referred to as “ECU 20”), and a notification control for notifying the passenger that there is something left behind when leaving the vehicle. Is the main function.

  The ECU 20 is a microcomputer including a CPU, a ROM, a RAM, and the like connected to each other via a bus (not shown). The ROM and RAM store programs and data executed by the CPU.

  The ECU 20 includes an RFID tag (also referred to as an IC tag or a wireless tag) 30 of personal belongings (carrying goods) placed on the vehicle by a vehicle occupant via an appropriate bus such as a CAN (Controller Area Network) or a high-speed communication bus. There are a tag reader 40 that wirelessly communicates and acquires management information of belongings, a speaker 52 that outputs a sound to the occupant that there is something left behind, a display 54 such as a liquid crystal display that displays an image that the occupant has something left behind, etc. It is connected.

  The tag reader 40 is a device that wirelessly communicates with the RFID tag 30 and reads management information of belongings recorded on the RFID tag 30. For example, as shown in FIG. 2, the tag reader 40 is installed in the center of a driver's seat P1, a passenger seat P2, and two rear seats P3 and P4, and includes four antennas 42a to 42d. Each of the four antennas 42a to 42d has directivity toward one different seat among the four seats P1 to P4. The tag reader 40 drives the four antennas 42a to 42d independently to wirelessly communicate with the RFID tag 30 of each belonging.

  The RFID tag 30 includes an IC chip 32 that records management information of belongings and an antenna 34 that communicates with the tag reader 40 wirelessly. The RFID tag 30 is provided inside or outside the belongings. Examples of belongings provided with the RFID tag 30 include a smart key, a mobile phone, a wallet, and the like that permit unlocking the door and starting the engine. Here, “management information of belongings” refers to information for managing the belongings, and in addition to ID information unique to the belongings, names and abbreviations of the belongings (for example, “smart key”, “mobile phone”, “wallet”) Etc.), information on the country of manufacture, manufacturer, date of manufacture, and the like.

  The RFID tag 30 reads management information recorded on the IC chip 32 and wirelessly transmits the management information to the tag reader 40 via the antenna 34. The RFID tag 30 may be an electromagnetic induction type passive tag that operates by converting a magnetic field from the tag reader 40 into electric power, or a radio wave type passive tag that operates by converting electric waves from the tag reader 40 into electric power. There may be. Moreover, the active tag which operate | moves with the electric power supplied from a built-in battery may be sufficient. Thus, there is no limitation on the type or method of the RFID tag 30.

  The tag reader 40 receives management information from the RFID tag 30 and outputs the received management information to the ECU 20. The management information output to the ECU 20 is accompanied by information indicating the antenna that has received the management information. For example, “1”, “2”, “3”, and “4” are attached to the management information received by the four antennas 42a to 42d, respectively.

  Further, the management information output to the ECU 20 may be accompanied by information indicating the reception strength at the antenna that has received the management information.

  The ECU 20 is connected to various sensors such as a courtesy switch 61 that detects opening and closing of the door, an IG switch 62 that starts and stops the engine, various shift switches 63 that detect each operation position of the shift lever, and a notification switch 64. . The notification switch 64 is provided in the passenger compartment, and is provided at a position where it can be operated by an occupant. For example, the notification switch 64 is provided at a position where the driver can easily operate. The notification switch 64 is normally maintained in an off state, and outputs an on signal by the operation of an occupant (for example, a driver).

  The ECU 20 determines whether to start notification control based on the output signal of the notification switch 64. That is, when the notification switch 64 is turned on, the ECU 20 starts notification control. Moreover, ECU20 may start alerting | reporting control based on the output signal from various sensors 61-63. The conditions for starting the notification control are, for example, first that the door is closed, second that the engine is started, and third that the shift lever is operated from the parking position to another position (traveling position). It has been done. When all the first to third conditions are satisfied, the notification control is started.

  FIG. 3 is a block diagram showing the main functions of the ECU 20. As shown in FIG. 3, the ECU 20 includes information detection means 21, position detection means 22, grouping means 23, determination means 24, and notification control means 25. The ECU 20 stores programs corresponding to the various means 21 to 25 in the ROM, causes the CPU to execute these programs, realizes the various means 21 to 25, and performs notification control. Hereinafter, various means 21 to 25 will be described.

  The information detecting means 21 is means for detecting management information (including ID information) of belongings carried by the vehicle occupant on the vehicle. The information detection means 21 detects the management information of all belongings placed on the vehicle by the vehicle occupant based on the management information of belongings output from the tag reader 40.

  The position detection means 22 is a means for detecting the position of the belongings carried by the vehicle occupant on the vehicle. The position detecting means 22 detects the position of the belonging based on the incidental information attached to the management information of the belonging.

  For example, the position of belongings is detected as follows based on information indicating the antenna that has received the management information.

  When management information of one belonging is received by only one antenna, the position of the belonging is usually near one seat in the direction of the antenna. For example, when management information of one belonging is received only by one antenna 42a, the position of the belonging is in the vicinity of the driver's seat P1 in the direction of the antenna 42a.

  On the other hand, when management information of one belonging is received by a plurality of antennas, the positions of the belongings are usually between a plurality of seats in the direction of the antennas. For example, when management information of one belonging is received by two antennas 42c and 42d, the position of the belonging is between two rear seats P3 and P4 in the direction of the direction of the antennas 42c and 42d.

  In this manner, the position detection unit 22 can detect the position of the belongings for each seat based on the information indicating the antenna that has received the management information.

  Further, the position of the belongings may be detected based on information indicating the reception intensity at the antenna that has received the management information. The farther the position of belongings is from the antenna, the lower the reception strength at the antenna. Therefore, the position detection unit 22 can detect the position of the belonging in units more detailed than the seat unit based on the information indicating the reception intensity at the antenna that has received the management information.

  The grouping means 23 is a means for grouping management information (including ID information) of belongings detected by the information detecting means 21 for each owner of the belongings.

  For example, the owner of the belonging is estimated and determined as follows based on the position of the belonging detected by the position detection means 22.

  The owner of all belongings that are detected near one seat is usually the occupant seated in that seat. For example, the owner of all belongings detected to be in the vicinity of the driver's seat P1 is usually a driver.

  On the other hand, the owner of belongings detected to be between a plurality of seats is usually one of a plurality of passengers seated in the plurality of seats. For example, the owner of the belongings detected to exist between the two rear seats P3 and P4 is one of the two passengers seated in the rear seats P3 and P4.

  Therefore, the grouping means 23 groups management information of all belongings detected to be in the vicinity of one seat into one group. Further, the grouping means 23 should belong to any one of a plurality of corresponding groups of management information of belongings detected to be between a plurality of seats.

  The management information of belongings grouped in this way is recorded in a recording medium such as a RAM of the ECU 20 and is read out as necessary.

  FIG. 4 is a diagram illustrating an example of management information recorded as a group. In the example illustrated in FIG. 4, the management information of the smart key 1A, the mobile phone 2A, and the wallet 3A that are detected in the vicinity of the driver's seat P1 is recorded in the group A column. In the group B column, management information of the mobile phone 2B and the wallet 3B detected to be in the vicinity of the passenger seat P2 is recorded. In the column of group C, management information of the mobile phone 2C and the wallet 3C detected to be in the vicinity of one rear seat P3 is recorded. In the column of group D, management information of the smart key 1D, the mobile phone 2D, and the wallet 3D detected to be in the vicinity of the other rear seat P4 is recorded. In the group E column, the management information of the wristwatch 4E detected to be between the two rear seats P3 and P4 is recorded as belonging to either the group C or the group D. Yes.

  The determination means 24 compares the ID information detected last time by the information detection means 21 and grouped by the grouping means 23 with the ID information detected this time by the information detection means 21, and determines the presence or absence of forgotten items. Means. That is, the determination unit 24 compares the ID information recorded by grouping for each owner in the previous process with the ID information detected in the current process, and determines the presence or absence of forgotten items.

  For example, when all the ID information of one group is detected, the determination unit 24 determines that there is no forgotten item. Further, when a part of the ID information of one group is not detected, it is determined that there is something left behind. However, when all of the ID information of one group is not detected, it is determined that there is no forgotten thing because the owner gets off.

  Even when all the ID information of a plurality of groups is detected, if the ID information recorded as belonging to any one of the plurality of groups is not detected, the forgotten thing is exceptional. It is determined that there is. In addition, even when not all of the ID information of a plurality of groups is detected, if ID information recorded as belonging to any one of the plurality of groups is detected, the forgotten thing is exceptionally It is determined that there is.

  Here, a determination process for determining the presence or absence of an occupant who has sat in the driver's seat P1 last time will be described with reference to FIG. If all of the group A ID information is detected, it is determined that there is no forgotten item. Further, when a part of the ID information of the group A is not detected, it is determined that there is something left behind. However, if all of the ID information of the group A is not detected, it is determined that there is no forgotten thing, assuming that the occupant previously seated in the driver's seat P1 gets off.

  Next, a determination process for determining the presence or absence of an occupant who was previously seated in one rear seat P3 will be described with reference to FIG. When all of the group C ID information is detected, in principle, it is determined that there is no forgotten thing, and exceptionally, when all of the group D ID information is detected and the ID information of the wristwatch 4E is not detected, Judge that there is something left behind. Further, when a part of the ID information of group C is not detected, it is determined that there is something left behind. However, when all of the group C ID information is not detected, in principle, it is determined that there is no forgotten thing, and exceptionally, all of the group D ID information is not detected and the ID information of the wristwatch 4E is detected. It is determined that there is something left behind.

  For the passengers seated in the other seats P2 and P4 last time, the presence or absence of forgotten items can be similarly determined. Therefore, the determination means 24 can determine the presence or absence of forgotten items for each occupant.

  The notification control unit 25 is a unit that controls the output of the output device such as the speaker 52 or the display 54 to notify the occupant that there is a forgotten item when the determining unit 24 determines that there is a forgotten item. In the present embodiment, the notification control means 25 and the output devices 52 and 54 function as the notification means of the present invention. The speaker 52 is disposed at a position where it is easy for the occupant to hear, for example, disposed inside each door. The display 54 is disposed at a position that is easy for the occupant to see. For example, the display 54 is disposed at a position that the driver can easily view.

  In addition, when the determination unit 24 determines that there is no thing left behind, the notification control unit 25 may control the outputs of the output devices 52 and 54 to notify the occupant that there is no thing left behind. Thereby, the passenger | crew can confirm that there is no thing left behind.

  Further, when the determination means 24 determines that there is a forgotten thing, the notification control means 25 controls the output of the output devices 52 and 54 to name the forgotten thing (for example, “smart key”, “mobile phone”, “ "Wallet" etc.) may be notified to the passenger. The name of the forgotten item is detected from the management information of the belongings. Thereby, the passenger | crew can know the kind of forgotten thing.

  Here, the name of the forgotten item is notified after determining whether the forgotten item exists outside or in the vehicle. When it is determined that there is a forgotten thing outside, the belongings corresponding to the ID information that was previously detected by the information detecting means 21 and was not detected this time are left behind. If it is determined that the forgotten item is present in the vehicle, the belongings detected by the information detecting unit 21 last time and corresponding to the ID information detected this time are forgotten items.

  The determination of whether the forgotten item is outside or in the vehicle is made based on, for example, a change in vehicle height detected by the height sensor 65. When the vehicle height decreases, the user has boarded, so it is determined that there is something left behind. Further, when the vehicle height increases, a part of the user gets off, so it is determined that there is something left behind in the vehicle.

  Further, the notification control means 25 may notify the occupant of the position of the forgotten object detected by the position detecting means 22 when determining that the forgotten thing is in the vehicle. The position of the forgotten item may be notified in units of seats, or may be notified in units more detailed than the units of seats. As a result, the occupant can find forgotten items, for example, without searching the interior of the vehicle.

  Here, an example of processing realized by the ECU 20 will be described with reference to FIG. FIG. 5 is a flowchart illustrating an example of processing realized by the ECU 20. The process shown in FIG. 5 is executed when the user gets on the vehicle, for example, when the user goes out of the house or goes home from the outside. 5 may be started, for example, when the notification switch 64 is operated, or may be started based on output signals from the various sensors 61 to 63.

  First, when the ECU 20 detects the ID information of the belongings carried by the vehicle occupant on the vehicle by the information detection means 21 (step S101), the ECU 20 reads the ID information that is grouped and recorded for each owner in the previous process. (Step S102). Thereafter, the ECU 20 compares the ID information of the both by the determination means 24 to determine the presence or absence of forgotten items (step S103).

  If it is determined that there is something left behind (step S103, YES), the notification control means 25 notifies the passenger that there is something left behind (step S104).

  On the other hand, when it is determined that there is no forgotten thing (step S103, NO) and when the passenger is informed that there is a forgotten thing (step S104), the process proceeds to step S105 and is detected by the position detection means 22 this time. The position of the belonging corresponding to the ID information is detected.

  Thereafter, the grouping means 23 groups and records the ID information of the belongings detected this time for each owner (step S106), and ends the current process. When the current process is terminated, the ID information grouped for each owner in the previous process may be deleted.

  Next, another example of processing realized by the ECU 20 will be described with reference to FIG. FIG. 6 is a flowchart illustrating another example of processing realized by the ECU 20. The process shown in FIG. 6 is executed when a part of the user gets off, for example, when a part of the user gets off the road from the outside to the home. 6 may be started, for example, when the notification switch 64 is operated, or may be started based on output signals from the various sensors 61 to 63.

  First, when the information detection means 21 and the position detection means 22 detect the ID information and the position of the belongings placed on the vehicle by the information detection means 21 and the position detection means 22 (step S201), the ECU 20 groups them for each owner in the previous process. The recorded ID information is read (step S202). Thereafter, the ECU 20 compares the ID information of the both by the determination means 24 to determine the presence or absence of forgotten items (step S203).

  Subsequently, the ECU 20 notifies the occupant of the presence / absence of the lost item, the name of the lost item, and the position of the lost item by the notification control unit 25 (step S204). Thereafter, the ID information of the belongings detected this time is grouped and recorded for each owner by the grouping means 23 (step S205), and the current process is terminated. When the current process is terminated, the ID information grouped for each owner in the previous process may be deleted.

  As described above, according to the vehicle notification device 10 of the present embodiment, the ID information grouped and recorded for each owner in the previous process is compared with the ID information detected in the current process. Therefore, the presence or absence of a forgotten item can be determined for each occupant. This makes it possible to accurately notify that there are forgotten items. For example, when a part of a plurality of occupants get off the road, it can be prevented that it is determined that the belongings of the occupant who has got off have forgotten to load. Further, when some of a plurality of occupants change home to another vehicle and go home, it is possible to accurately determine the presence or absence of forgotten items without wireless communication with the other vehicle. Therefore, it is possible to accurately determine the presence or absence of forgotten items regardless of the facilities of other vehicles.

  Further, according to the vehicle notification device 10 of the present embodiment, when it is determined that a forgotten item is present in the vehicle, the position of the forgotten item is notified to the occupant. , You can find forgotten things.

  The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the present invention. Can be added.

  For example, in the above-described embodiment, the tag reader 40 is installed at the center of the driver's seat P1, the passenger seat P2, and the two rear seats P3 and P4, and includes four antennas 42a to 42d. The present invention is not limited to this. For example, as shown in FIG. 7, the tag reader 80 is installed on the opposite side of the driver seat P1, the passenger seat P2, and the one rear seat P3 with respect to the other rear seat P4, and includes one antenna 82. May be. One antenna 82 has directivity toward the four seats P1 to P4. The tag reader 80 controls the output level of the antenna 82 in several stages, and communicates with the RFID tag 30 of each belonging. When the tag reader 80 receives management information from the RFID tag 30, the tag reader 80 outputs the received management information to the ECU 20. The management information output to the ECU 20 is accompanied by additional information indicating the output level of the antenna 82 when the management information is received. Further, the management information output to the ECU 20 may be accompanied by additional information indicating reception intensity at the antenna 82 that has received the management information. In this case, the position detection means 22 detects the position of the belonging in units of seats (sitting area units) or in units more detailed than the seat units based on the incidental information output from the tag reader 80.

  In the above-described embodiment, the tag reader 40 includes the four antennas 42a to 42d, and the four antennas 42a to 42d are directed toward one different seat among the four seats P1 to P4. Although it has directivity, the present invention is not limited to this. For example, if the vehicle includes one three-seat rear seat instead of two rear seats P3 and P4, the tag reader 40 includes five antennas, each of which has five seating areas. Directivity may be directed toward one of the different seating areas.

  In the above-described embodiment, the grouping unit 23 groups the management information of the belongings detected by the information detecting unit 21 for each owner of the belongings based on the position of the belongings detected by the position detecting unit 22. However, the present invention is not limited to this. For example, the grouping means 23 displays the management information of the belongings detected by the information detection means 21 on the display 54 and displays the management information of the belongings on the basis of an instruction signal from an occupant who saw the image display. You may group by owner. Thereby, for example, the management information of belongings detected to be between a plurality of seats can be grouped into a specific group.

It is a functional block diagram which shows one Example of the alerting | reporting apparatus for vehicles concerning this invention. It is a top view which shows an example of the vehicle mounting state of a tag reader. 2 is a block diagram showing main functions of an ECU 20. FIG. It is a figure which shows an example of the management information recorded by grouping. It is a flowchart which shows an example of the process implement | achieved by ECU20. 6 is a flowchart illustrating another example of processing realized by the ECU 20. It is a top view which shows another example of the vehicle mounting state of a tag reader.

Explanation of symbols

10 vehicle alarm device 20 ECU
21 Information Detection Unit 22 Position Detection Unit 23 Grouping Unit 24 Determination Unit 25 Notification Control Unit 30 RFID Tag 40 Tag Reader 52 Speaker 54 Display

Claims (1)

Information detecting means for detecting ID information of belongings carried by the vehicle occupant on the vehicle;
Grouping means for grouping ID information of the belongings detected by the information detecting means for each owner of the belongings;
A determination unit that compares the ID information detected last time by the information detection unit and grouped by the grouping unit with the ID information detected this time by the information detection unit, and determines whether or not there is a forgotten item;
A vehicle notification device comprising: notification means for notifying an occupant that there is something left behind when the determination means determines that there is something left behind.

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