Notification device

Abstract

To provide a notification device that enables an occupant to set a threshold value for a distance between a door of a vehicle and an obstacle, a condition for determining whether or not to notify the occupant of the distance, and a notification method for notifying the occupant.SOLUTION: A notification device in a vehicle, which is a CPU20A of a central ECU, comprises: an acquisition section 220 configured to acquire a distance between a door provided at the vehicle and an obstacle facing the door; and a notification section 230 configured to notify an occupant of the vehicle of the distance by a method predetermined by the occupant in a case in which the distance is equal to or less than a reference threshold value predetermined by the occupant and in which a condition predetermined by the occupant is satisfied.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a notification device. [Background technology]

[0002] Patent Document 1 discloses a vehicle door opening assistance device. This vehicle door opening assistance device includes an obstacle position acquisition means for acquiring the position of an obstacle in an area facing the vehicle door from a detection signal of a distance sensor attached to the vehicle body, an openable angle calculation means for calculating the openable angle of the door from the obstacle position, an open angle acquisition means for acquiring the open angle of the door, and a presentation means for presenting the relationship between the openable angle and the open angle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-104055 Summary of the Invention [Problem to be solved by the invention]

[0004] The vehicle door opening assistance device disclosed in Patent Document 1 has the problem that the occupant cannot set the threshold distance between the vehicle door and an obstacle, the conditions for determining whether to notify the occupant of the distance, and the method of notifying the occupant.

[0005] The present disclosure has been made in consideration of the above facts, and aims to provide a notification device that allows an occupant to set the threshold distance between the vehicle door and an obstacle, the conditions for determining whether to notify the occupant of the distance, and the method of notifying the occupant. [Means for solving the problem]

[0006] The notification device of the first aspect includes an acquisition unit that acquires the distance between a door provided on a vehicle and an obstacle facing the door, and a notification unit that notifies the occupant of the distance in a manner predetermined by the occupant if the distance is equal to or less than a reference threshold predetermined by the occupant and satisfies a condition predetermined by the occupant.

[0007] In the notification device according to the first aspect, the acquisition unit acquires the distance between a door provided in a vehicle and an obstacle facing the door, and the notification unit notifies the occupant of the distance in a manner predetermined by the occupant if the distance is equal to or less than a reference threshold predetermined by the occupant and satisfies a condition predetermined by the occupant. According to the notification device according to the first aspect, the occupant can set the threshold value of the distance between the vehicle door and the obstacle, the condition for determining whether to notify the occupant of the distance, and the method of notifying the occupant.

[0008] A notification device according to a second aspect is the notification device according to the first aspect, wherein the notification unit notifies the distance when the vehicle is stopped and the door is closed.

[0009] According to the notification device of the second aspect, the occupant can know the distance between the door and the obstacle before opening the door.

[0010] The notification device of the third aspect is the notification device of the first or second aspect, wherein when the vehicle is stopped and the door is open, the notification unit notifies the distance at a louder volume as the distance becomes shorter.

[0011] The notification device according to the third aspect can warn of the possibility of the door hitting an obstacle.

[0012] The notification device of the fourth aspect is a notification device of any one of the first to third aspects, wherein the acquisition unit further acquires the seating position of the occupant, and the notification unit changes the reference threshold value according to the seating position of the occupant.

[0013] According to the notification device of the fourth aspect, the reference threshold value can be changed depending on the seating position of the occupant.

[0014] The notification device of the fifth aspect is a notification device of any one of the first to fourth aspects, further comprising a control unit that controls the door so that it cannot be opened or closed when the distance is equal to or less than a regulatory threshold that is less than the standard threshold.

[0015] According to the notification device of the fifth aspect, it is possible to prevent the door from hitting an obstacle. [Effects of the Invention]

[0016] According to the present disclosure, the occupant can set the threshold value of the distance between the vehicle door and an obstacle, the conditions for determining whether to notify the occupant of the distance, and the method of notifying the occupant. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a block diagram showing a hardware configuration of devices mounted on a vehicle according to an embodiment; [Figure 2] FIG. 2 is a block diagram illustrating an example of a functional configuration of a CPU in a central ECU according to the embodiment. [Figure 3] 10 is a flowchart illustrating an example of the flow of a reception process according to the embodiment. [Figure 4] 10 is a flowchart illustrating an example of the flow of a notification process according to the embodiment. [Figure 5] FIG. 10 is a schematic diagram illustrating an example of a notification screen according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0018] As shown in FIG. 1, a vehicle 12 according to this embodiment includes a central ECU (Electronic Control Unit) 20 as a notification device, a body ECU 30, a meter ECU 40, and a door lock ECU 50.

[0019] The body ECU 30 transmits to the central ECU 20 a sensor value relating to the distance between a door (hereinafter referred to as a "door") provided on the vehicle 12 and an obstacle (hereinafter referred to as an "obstacle") facing the door. The obstacle is, for example, a vehicle adjacent to the vehicle 12, a person, a pillar, or a guardrail. In this embodiment, the sensor value is measured by a distance sensor 31 provided on each of the multiple doors provided on the vehicle 12. The body ECU 30 also transmits to the central ECU 20 an opening / closing signal indicating whether the door has been opened or closed. In this embodiment, an opening / closing sensor 32 provided on the door detects whether the door has been opened or closed.

[0020] When the meter ECU 40 receives an instruction from the central ECU 20, it displays the distance between the door and the obstacle (hereinafter also referred to as "distance") on the meter display 41. The meter display 41 is a liquid crystal monitor provided on the meter panel. When the meter ECU 40 receives an instruction from the central ECU 20, it notifies the occupant of the distance via the speaker 42.

[0021] When a lock signal is input from the central ECU 20, the door lock ECU 50 outputs a drive signal to an actuator 51 of the door lock mechanism to lock the door.

[0022] 1, the central ECU 20 includes a central processing unit (CPU) 20A, a read-only memory (ROM) 20B, a random access memory (RAM) 20C, a wireless communication interface (I / F) 20D, an in-vehicle communication I / F 20E, and an input / output I / F 20F. The CPU 20A, the ROM 20B, the RAM 20C, the wireless communication I / F 20D, the in-vehicle communication I / F 20E, and the input / output I / F 20F are connected to each other via an internal bus 20G so as to be able to communicate with each other.

[0023] The CPU 20A is a central processing unit that executes various programs and controls various components. That is, the CPU 20A reads programs from the ROM 20B and executes the programs using the RAM 20C as a work area. The ROM 20B according to this embodiment stores a notification program. The notification program is a program for controlling the central ECU 20.

[0024] The ROM 20B stores various programs and various data. The RAM 20C temporarily stores programs or data as a working area.

[0025] The wireless communication I / F 20D is an interface for communicating with devices other than the vehicle 12, and uses standards such as Ethernet (registered trademark), FDDI, and Wi-Fi (registered trademark).

[0026] The in-vehicle communication I / F 20E is an interface for connecting with the body ECU 30, the meter ECU 40, and the door lock ECU 50. The interface uses a communication standard based on the CAN (Controller Area Network) protocol. The in-vehicle communication I / F 20E is connected to the external bus 20H.

[0027] The input / output I / F 20F is an interface for connecting to the input switch 21, the monitor 22, and the in-vehicle camera 23.

[0028] The input switch 21 is configured as a touch panel that also serves as the monitor 22. The input switch 21 may be provided on an instrument panel, a center console, a steering wheel, or the like, and may be a switch that inputs operations performed by the occupant's fingers. In this case, the input switch 21 may be, for example, a push-button numeric keypad or a touch pad.

[0029] The monitor 22 is a liquid crystal monitor provided on an instrument panel, etc. As described above, the monitor 22 is provided as a touch panel that also functions as the input switch 21.

[0030] The in-vehicle camera 23 is a camera that captures images of the interior of the vehicle 12.

[0031] Fig. 2 is a block diagram showing an example of the functional configuration of CPU 20A. As shown in Fig. 2, CPU 20A has a reception unit 200, a storage unit 210, an acquisition unit 220, a notification unit 230, and a control unit 240. Each functional configuration is realized by CPU 20A reading and executing a notification program stored in ROM 20B.

[0032] The receiving unit 200 receives a reference threshold value that is predetermined by an occupant of the vehicle 12 (hereinafter referred to as "occupant"). The reference threshold value is a distance threshold value that is used to determine whether or not the notification unit 230, which will be described later, should notify the user of the distance between the door and an obstacle. The receiving unit 200 may receive a different reference threshold value for each door, or may receive a single reference threshold value.

[0033] The reception unit 200 also receives a preset occupant that is predetermined by the occupant. The preset occupant is any occupant for whom particular caution is desired. The preset occupant is, for example, a child. The reception unit 200 may receive only one preset occupant or multiple preset occupants.

[0034] The receiving unit 200 also receives a setting condition that is predetermined by the occupant. The setting condition is a condition for determining whether the notification unit 230 notifies the distance. In this embodiment, the setting condition is that the vehicle 12 is stopped and the door is closed, or that the vehicle 12 is stopped and the door is open. However, the setting condition is not limited to this example. For example, the setting condition may be that the obstacle is a vehicle other than the vehicle 12, or that the obstacle is a person.

[0035] The receiving unit 200 also receives a notification method predetermined by the occupant. The notification method is a method by which the notification unit 230 notifies the distance. In this embodiment, the notification method is a notification method by voice via the speaker 42 (hereinafter referred to as "a notification method by voice") or a notification method by display via the meter display 41 (hereinafter referred to as "a notification method by display"). However, the notification method is not limited to this example. For example, the notification method may be a notification method by display via the monitor 22, or a notification method by voice or display via a smartphone or the like owned by the occupant.

[0036] The reception unit 200 receives the reference threshold value, the set occupant, the set conditions, and the notification method from the occupant via the input switch 21. However, this is not limited to this example. For example, the reception unit 200 may receive the reference threshold value, the set occupant, the set conditions, and the notification method from a smartphone or the like carried by the occupant via the wireless communication I / F 20D.

[0037] The memory unit 210 stores in the ROM 20B the reference threshold value, the set occupant, the set conditions, and the notification method received by the reception unit 200. If the central ECU 20 includes a storage, the memory unit 210 may store the reference threshold value, the set occupant, the set conditions, and the notification method in the storage.

[0038] The acquisition unit 220 has a function of acquiring distances. Specifically, the acquisition unit 220 acquires the distance measured by the distance sensor 31 for each door via the body ECU 30. The acquisition unit 220 also has a function of acquiring the seating positions of the occupants. Specifically, the acquisition unit 220 acquires the seating positions of the occupants from the inside of the vehicle 12 photographed by the in-vehicle camera 23.

[0039] The notification unit 230 has a function of notifying the occupant of the distance using a notification method when the distance is equal to or less than the reference threshold and satisfies the set conditions.

[0040] In this embodiment, if the set conditions are that the vehicle 12 is stopped and the doors are closed, the notification unit 230 notifies the distance when the vehicle 12 is stopped and the doors are closed. On the other hand, if the set conditions are the above-mentioned conditions and the doors are open, the notification unit 230 does not notify the distance. Also, in this embodiment, if the set conditions are that the vehicle 12 is stopped and the doors are open, the notification unit 230 notifies the distance when the vehicle 12 is stopped and the doors are open. On the other hand, if the set conditions are the above-mentioned conditions and the doors are closed, the notification unit 230 does not notify the distance. In other words, if the actual state of the vehicle 12 satisfies the set conditions, the notification unit 230 notifies the distance. On the other hand, if the actual state of the vehicle 12 does not satisfy the set conditions, the notification unit 230 does not notify the distance.

[0041] Furthermore, in this embodiment, when the notification method is a visual notification method, the notification unit 230 notifies the distance by display via the meter display 41. On the other hand, when the notification method is an audio notification method, the notification unit 230 notifies the distance by audio via the speaker 42. Furthermore, when the set conditions are that the vehicle 12 is stopped and the door is open, and the notification method is an audio notification method, the notification unit 230 notifies the distance at a louder volume as the distance becomes shorter. In this embodiment, the volume is set to two levels. However, this is not limited to this example. The volume may be set to three or more levels. Furthermore, the notification unit 230 may notify the distance at a lower volume as the distance becomes shorter.

[0042] Furthermore, the notification unit 230 has a function of changing the reference threshold value according to the seating position of the occupant. In this embodiment, if the distance between the door closest to the set occupant and the obstacle is equal to or less than an enlarged threshold value that is greater than the reference threshold value, the notification unit 230 notifies the occupant of the distance. In this embodiment, there is one type of enlarged threshold value. However, this is not limited to this example. There may be two or more types of enlarged threshold values. Furthermore, the enlarged threshold value may be received from the occupant by the receiving unit 200, or may be set by the notification unit 230.

[0043] The notification unit 230 may also have a function of further notifying the user of a parking method for the vehicle 12 so that the distance is equal to or less than the reference threshold value.

[0044] The control unit 240 has a function of controlling the doors whose distance is equal to or less than the restriction threshold so that they cannot be opened or closed. The restriction threshold is a value less than a reference threshold. The restriction threshold may be received from an occupant by the receiving unit 200 or may be set by the control unit 240. Specifically, the control unit 240 outputs a lock signal corresponding to the door whose distance is less than the restriction threshold to the door lock ECU 50. Then, the actuator 51 of the door lock mechanism corresponding to the door whose distance is less than the restriction threshold is driven and controlled. Then, the door whose distance is less than the restriction threshold is locked. The door locked in this way cannot be opened or closed unless the control unit 240 outputs an unlock signal to the door lock ECU 50.

[0045] The control unit 240 may determine which doors can be opened and closed depending on the seating position of the occupant. Specifically, the control unit 240 may control the door closest to the set occupant so that the door cannot be opened or closed if the distance between the door closest to the set occupant and an obstacle is less than the enlargement threshold. The control unit 240 may then control the doors other than the door closest to the set occupant as openable and closable doors regardless of the distance.

[0046] (Flow of Control) The flow of processing executed in this embodiment will be described with reference to the flowcharts of FIGS.

[0047] First, the flow of the reception process for receiving the reference threshold, the set occupant, the set conditions, and the notification method from the occupant will be described with reference to Fig. 3. The reception process is performed by the CPU 20A reading out the notification processing program from the ROM 20B, expanding it into the RAM 20C, and executing it.

[0048] 3, the CPU 20A waits until it receives a reference threshold value from the occupant via the input switch 21. When the CPU 20A receives the reference threshold value (step S100: YES), the CPU 20A proceeds to step S101.

[0049] In step S101, the CPU 20A stores the reference threshold value received in step S100 in the ROM 20B.

[0050] In step S102, the CPU 20A waits until a set occupant is received from an occupant via the input switch 21. When the CPU 20A receives the set occupant (step S102: YES), the CPU 20A proceeds to step S103.

[0051] In step S103, the CPU 20A stores the set occupant received in step S102 in the ROM 20B.

[0052] In step S104, the CPU 20A waits until it receives a setting condition from the occupant via the input switch 21. When the CPU 20A receives a setting condition (step S104: YES), the CPU 20A proceeds to step S105.

[0053] In step S105, the CPU 20A stores the setting conditions received in step S104 in the ROM 20B.

[0054] In step S106, the CPU 20A waits until it receives a notification method from the occupant via the input switch 21. When the CPU 20A receives a notification method (step S106: YES), it proceeds to step S107.

[0055] In step S107, the CPU 20A stores the notification method accepted in step S106 in the ROM 20B, and ends this acceptance process.

[0056] Next, the flow of the notification process for notifying the occupant of the distance will be described with reference to Fig. 4. The notification process is performed by the CPU 20A reading out the notification process program from the ROM 20B, expanding it into the RAM 20C, and executing it. In the example shown in Fig. 4, a case will be described in which the reference threshold value, the set occupant, the set conditions, and the notification method are stored in advance in the ROM 20B by executing the reception process.

[0057] 4, the CPU 20A determines whether the vehicle 12 is stopped. Specifically, the CPU 20A determines that the vehicle 12 is stopped when the vehicle speed acquired from the vehicle speed sensor provided in the vehicle 12 is 0 km / h.

[0058] In step S201, the CPU 20A acquires the distance. Specifically, the acquisition unit 220 acquires, via the body ECU 30, the distance measured by the distance sensor 31 for each door.

[0059] In step S202, the CPU 20A determines whether there is a door whose distance is equal to or less than the regulation threshold. If there is a door whose distance is equal to or less than the regulation threshold (step S202: YES), the CPU 20A proceeds to step S203. On the other hand, if there is no door whose distance is equal to or less than the regulation threshold (step S202: NO), the CPU 20A proceeds to step S204.

[0060] In step S203, the CPU 20A controls the door whose distance is equal to or less than the regulation threshold so as to disable the door from being opened or closed. Specifically, the CPU 20A outputs a lock signal to the door lock ECU 50 corresponding to the door whose distance is less than the regulation threshold.

[0061] In step S204, the CPU 20A acquires the seating positions of the occupants. Specifically, the CPU 20A acquires the seating positions of the occupants from the inside of the vehicle 12 captured by the in-vehicle camera .

[0062] In step S205, the CPU 20A determines whether the distance between the door closest to the set occupant and the obstacle is equal to or less than the enlargement threshold. If the distance between the door closest to the set occupant and the obstacle is equal to or less than the enlargement threshold (step S205: YES), the CPU 20A proceeds to step S206. On the other hand, if the distance between the door closest to the set occupant and the obstacle is greater than the enlargement threshold (step S205: NO), the CPU 20A proceeds to step S210.

[0063] In step S206, the CPU 20A determines whether the set condition is that the vehicle 12 is stopped and the doors are closed. If the set condition is that the vehicle 12 is stopped and the doors are closed (step S206: YES), the CPU 20A proceeds to step S207. On the other hand, if the set condition is that the vehicle 12 is stopped and the doors are open (step S206: NO), the CPU 20A proceeds to step S209.

[0064] In step S207, the CPU 20A determines whether the door closest to the set occupant is closed. Specifically, in step S207, the CPU 20A determines whether a signal indicating that the door closest to the set occupant is closed has been received from the body ECU 30 as an open / close signal. If the door closest to the set occupant is closed (step S207: YES), the CPU 20A proceeds to step S208. On the other hand, if the door closest to the set occupant is open (step S207: NO), the CPU 20A proceeds to step S210.

[0065] In step S208, CPU 20A notifies the user of the distance using a notification method. Specifically, if the notification method is a visual notification method, CPU 20A displays a notification screen on meter display 41. On the other hand, if the notification method is an audio notification method, CPU 20A notifies the user of the distance by voice via speaker 42. Note that the set conditions are that vehicle 12 is stopped and the door is open, and if the notification method is an audio notification method, CPU 20A notifies the user of the distance at a louder volume as the distance becomes shorter.

[0066] As shown in Fig. 5, the notification screen displays an icon M1 indicating the distance to each door and a meter M2 indicating the vehicle speed, etc. The numbers shown in the four corners of the icon M1 correspond to the distance between each door and an obstacle in the vehicle icon. In the example shown in Fig. 5, the distance between the right front door of the vehicle 12 and the obstacle is 21 cm, and the other doors are closed.

[0067] In step S209, the CPU 20A determines whether the door closest to the set occupant is open. Specifically, in step S209, the CPU 20A determines whether a signal indicating that the door closest to the set occupant is open has been received from the body ECU 30 as an open / close signal. If the door closest to the set occupant is open (step S209: YES), the CPU 20A proceeds to step S208. On the other hand, if the door closest to the set occupant is closed (step S209: NO), the CPU 20A proceeds to step S210.

[0068] In step S210, the CPU 20A determines whether there is a door whose distance to the obstacle is equal to or less than the reference threshold. If there is a door whose distance to the obstacle is equal to or less than the reference threshold (step S210: YES), the CPU 20A proceeds to step S211. On the other hand, if there is no door whose distance to the obstacle is equal to or less than the reference threshold (step S210: NO), the CPU 20A ends this notification process.

[0069] In step S211, the CPU 20A determines whether the set condition is that the vehicle 12 is stopped and the doors are closed. If the set condition is that the vehicle 12 is stopped and the doors are closed (step S211: YES), the CPU 20A proceeds to step S212. On the other hand, if the set condition is that the vehicle 12 is stopped and the doors are open (step S211: NO), the CPU 20A proceeds to step S214.

[0070] In step S212, the CPU 20A determines whether or not the door whose distance is equal to or less than the reference threshold is closed. Specifically, in step S212, the CPU 20A determines whether or not a signal indicating that the door whose distance is equal to or less than the reference threshold is closed has been received from the body ECU 30 as an open / close signal. If the door whose distance is equal to or less than the reference threshold is closed (step S212: YES), the CPU 20A proceeds to step S213. On the other hand, if the door whose distance is equal to or less than the reference threshold is open (step S212: NO), the CPU 20A ends this notification process.

[0071] In step S213, CPU 20A notifies the user of the distance using a notification method. Specifically, if the notification method is a visual notification method, CPU 20A displays a notification screen on meter display 41. On the other hand, if the notification method is an audio notification method, CPU 20A notifies the user of the distance by voice via speaker 42. Note that the set conditions are that vehicle 12 is stopped and the door is open, and if the notification method is an audio notification method, CPU 20A notifies the user of the distance at a louder volume as the distance becomes shorter.

[0072] In step S214, the CPU 20A determines whether or not a door whose distance is equal to or less than the reference threshold is open. Specifically, in step S214, the CPU 20A determines whether or not a signal indicating that a door whose distance is equal to or less than the reference threshold is open has been received from the body ECU 30 as an opening / closing signal. If the door whose distance is equal to or less than the reference threshold is open (step S214: YES), the CPU 20A proceeds to step S213. On the other hand, if the door whose distance is equal to or less than the reference threshold is closed (step S214: NO), the CPU 20A ends this notification process.

[0073] [remarks] In the above embodiment, the central ECU included in the vehicle 12 is used as the notification device. However, the present invention is not limited to this example. A device configured separately from the vehicle 12 may also be used as the notification device.

[0074] Furthermore, the processing performed by the CPU after reading the software (program) in the above-described embodiments may be performed by various processors other than the CPU. Examples of such processors include programmable logic devices (PLDs) (such as field-programmable gate arrays (FPGAs)) whose circuit configuration can be changed after fabrication, and dedicated electrical circuits such as application-specific integrated circuits (ASICs) that are processors with circuit configurations specifically designed to perform specific processing. The above-described processing may be performed by one of these various processors, or by a combination of two or more processors of the same or different types (e.g., multiple FPGAs, or a combination of a CPU and an FPGA). The hardware structure of these various processors is, more specifically, an electrical circuit that combines circuit elements such as semiconductor devices.

[0075] In the above embodiment, the programs are pre-stored (installed) in ROM, but the present invention is not limited to this. The programs may be provided in a form recorded on a recording medium such as a CD-ROM (Compact Disc Read Only Memory), a DVD-ROM (Digital Versatile Disc Read Only Memory), or a USB (Universal Serial Bus) memory. The programs may also be downloaded from an external device via a network.

[0076] The processing flow described in the above embodiment is also an example, and unnecessary steps may be deleted, new steps may be added, or the processing order may be changed within the scope of the gist.

[0077] Furthermore, the configurations of the vehicle 12 and the central ECU 20 described in the above embodiment are merely examples, and may be changed depending on the situation without departing from the spirit of the invention. [Explanation of symbols]

[0078] 12 vehicles 20 Central ECU (notification device) 220 Acquisition Department 230 Notification Department 240 Control Unit

Claims

1. an acquisition unit that acquires a distance between a door provided in a vehicle and an obstacle facing the door; a notification unit that notifies the occupant of the distance in a manner predetermined by the occupant when the distance is equal to or less than a reference threshold predetermined by the occupant and satisfies a condition predetermined by the occupant; Equipped with the notification unit notifies the distance when the vehicle is stopped and the door is closed; Notification device.

2. An acquisition unit that acquires the distance between a door provided on a vehicle and an obstacle facing the door; a notification unit that notifies the occupant of the distance in a manner predetermined by the occupant when the distance is equal to or less than a reference threshold predetermined by the occupant and satisfies a condition predetermined by the occupant; Equipped with When the vehicle is stopped and the door is open, the notification unit notifies the distance at a louder volume as the distance becomes shorter. Notification device.

3. An acquisition unit that acquires the distance between a door provided on a vehicle and an obstacle facing the door; a notification unit that notifies the occupant of the distance in a manner predetermined by the occupant when the distance is equal to or less than a reference threshold predetermined by the occupant and satisfies a condition predetermined by the occupant; Equipped with The acquisition unit further acquires the seating position of the occupant, The notification unit changes the reference threshold value depending on the seating position of the occupant. Notification device.

4. An acquisition unit that acquires the distance between a door provided on a vehicle and an obstacle facing the door; a notification unit that notifies the occupant of the distance in a manner predetermined by the occupant when the distance is equal to or less than a reference threshold predetermined by the occupant and satisfies a condition predetermined by the occupant; Equipped with A control unit is further provided that controls the door so that the door cannot be opened or closed when the distance is equal to or less than a regulation threshold that is less than the reference threshold. Notification device.

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