JP2019185629A - Vehicle height detection device and vehicle height detection method - Google Patents

Abstract

To provide a vehicle height detection device that accurately notifies a vehicle occupant of vehicle height restriction information and current vehicle height information by using a display device mounted on the vehicle, as an object.SOLUTION: A vehicle height detection device is comprised of: a beacon receiving unit mounted on the vehicle, that receives a short-range wireless beacon including information on a current vehicle height, which is a vehicle height in a current state of the vehicle, transmitted from a place outside the vehicle and having vehicle height restrictions, vehicle identification information which is information identifying the current vehicle height, and vehicle height restriction information; and a display control unit that performs a control to display the current vehicle height and the vehicle height limit on the display device mounted on the vehicle corresponding to the vehicle identification information on the basis of the information included in the beacon.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle height detection device and a vehicle height detection method.

  Patent Document 1 discloses a height limit excess detection device. The detection device installed in front of the height restriction point detects the height of the vehicle entering the height restriction point. When the height of the vehicle exceeds the height limit, the detection device outputs a message to that effect to the alarm device.

JP 2005-251062 A

  Such a detection device can detect that the vehicle cannot enter a place with a height restriction. However, since the detection device does not operate in cooperation with a display device mounted on the vehicle, the detected information may not be recognized by the vehicle occupant. For example, even if the detected vehicle height exceeds the height limit, even if it is displayed on a warning light or electronic warning board installed outside the vehicle, the driver of the vehicle does not notice the warning There is. When a load is loaded on the vehicle main body, there arises a problem that the load collides with a ceiling, a signboard or the like in a place having a vehicle height restriction and is damaged. In addition, when the vehicle is stuck at a place where the vehicle height is restricted, the traffic of the following vehicle is caused.

  The present invention has been made in order to solve the above-described problems. The vehicle height restriction information and the current vehicle height information are accurately displayed to a vehicle occupant by a display device mounted on the vehicle. An object is to provide a vehicle height detection device for notification.

  The vehicle height detection device according to the present invention is provided in a vehicle and specifies the vehicle height information and vehicle information in the current state of the vehicle transmitted from a location outside the vehicle and having a vehicle height restriction. A beacon receiver that receives a short-range wireless beacon including vehicle identification information and vehicle height restriction information, and a display device mounted on the vehicle corresponding to the vehicle identification information based on the information included in the beacon And a display control unit that performs control to display the current vehicle height and the vehicle height limit.

  According to the present invention, it is possible to provide a vehicle height detection device that accurately notifies vehicle occupants of vehicle height restriction information and current vehicle height information using a display device mounted on the vehicle.

  The objects, features, aspects, and advantages of the present invention will become more apparent from the following detailed description and the accompanying drawings.

It is a block diagram which shows the structure of the vehicle height detection apparatus in Embodiment 1, and the apparatus which operate | moves in connection with it. It is a figure which shows the structure of the processing circuit which a vehicle height detection apparatus has. It is a figure which shows another structure of the processing circuit which a vehicle height detection apparatus has. 4 is a flowchart showing an operation of the vehicle height detection device and a vehicle height detection method in the first embodiment. It is a block diagram which shows the structure of the vehicle height detection apparatus in Embodiment 2, and the apparatus which operate | moves in connection with it. It is a schematic diagram which shows the relationship between the beacon transmitted from the beacon transmission part in Embodiment 2, and a vehicle. It is a figure which shows the information which the beacon received by the beacon receiving part in Embodiment 2 contains. 10 is a flowchart showing the operation of the external control device in the second embodiment. It is a figure which shows the state in which the vehicle in Embodiment 2 approachs the entrance of a parking lot. It is a figure which shows the state in which the present vehicle height and vehicle specific information of the vehicle in Embodiment 2 were detected. 6 is a flowchart illustrating an operation of a vehicle height detection device and a vehicle height detection method according to Embodiment 2. FIG. 10 is a diagram showing an example of a vehicle height restriction displayed on a display device in a second embodiment. It is a figure which shows an example of the vehicle height limitation displayed on the display apparatus in Embodiment 2, and the present vehicle height. It is a figure which shows an example of the vehicle height limitation displayed on the display apparatus in Embodiment 2, and the present vehicle height. It is a figure which shows the state in which the vehicle in Embodiment 2 turns left with respect to the entrance of a parking lot. It is a figure which shows an example of the map of the parking lot in the modification 1 of Embodiment 2, and its guidance path. It is a figure which shows the state in which the vehicle in the modification 2 of Embodiment 2 is moving backward in a parking lot. It is a block diagram which shows the structure of the vehicle height detection apparatus in Embodiment 3, and the apparatus which operate | moves in connection with it. It is a figure which shows the information which the beacon transmitted by the beacon transmission part in Embodiment 3 contains. 10 is a flowchart illustrating an operation of a vehicle height detection device and a vehicle height detection method according to Embodiment 3. It is a figure which shows the state which the vehicle in Embodiment 3 stopped urgently at the entrance of the parking lot which has vehicle height restrictions. It is a figure which shows the state which the subsequent other vehicle which received the beacon containing the emergency stop information in Embodiment 3 has stopped. It is a block diagram which shows the structure of the vehicle height detection apparatus in Embodiment 4, and the apparatus which operate | moves in connection with it.

<Embodiment 1>
(Configuration of vehicle height detection device)
FIG. 1 is a block diagram illustrating a configuration of a vehicle height detection device 100 and a device that operates in association therewith in the first embodiment.

  The vehicle height detection device 100 includes a beacon receiving unit 10 and a display control unit 20. In FIG. 1, a display device 110 is shown as a device that operates in association with the vehicle height detection device 100.

  The beacon receiving unit 10 is provided in the vehicle. The beacon receiving unit 10 receives a short-range wireless beacon transmitted from a place outside the vehicle and having a vehicle height restriction. The beacon includes current vehicle height information, vehicle identification information, and vehicle height restriction information.

  The places having a vehicle height restriction include, for example, a parking lot having a ceiling, a garage, a road under an overpass, tunnels, and places near their entrances. The place having the vehicle height restriction is not limited to these.

  The current vehicle height is the vehicle height in the current state of the vehicle. The current vehicle height is, for example, a vehicle height including a load loaded on the vehicle body.

  The vehicle specifying information is information for specifying a vehicle. The vehicle specifying information is, for example, information on the license plate of the vehicle, but is not limited to this.

  The short-range wireless beacon is, for example, a beacon corresponding to a BLE (Bluetooth Low Energy (registered trademark)) standard, but is not limited thereto.

  Based on the information included in the beacon, the display control unit 20 performs control to display the vehicle height restriction and the current vehicle height on the display device 110 mounted on the vehicle corresponding to the vehicle identification information.

  The display device 110 is mounted on the vehicle. The display device 110 is, for example, a display unit of a car navigation device, a display unit of an infotainment device, a display unit of an instrument panel, or the like.

(Processing circuit)
FIG. 2 is a diagram illustrating a configuration of the processing circuit 90 included in the vehicle height detection device 100. Each function of the beacon receiving unit 10 and the display control unit 20 is realized by the processing circuit 90. That is, the processing circuit 90 includes the beacon receiving unit 10 and the display control unit 20.

  When the processing circuit 90 is dedicated hardware, the processing circuit 90 includes, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), and an FPGA (Field-Programmable). Gate Array), or a combination of these. Each function of the beacon receiving unit 10 and the display control unit 20 may be realized individually by a plurality of processing circuits, or may be realized collectively by one processing circuit.

  FIG. 3 is a diagram illustrating another configuration of the processing circuit included in the vehicle height detection device 100. The processing circuit includes a processor 91 and a memory 92. Each function of the beacon receiving unit 10 and the display control unit 20 is realized by the processor 91 executing a program stored in the memory 92. For example, each function is realized when the processor 91 executes software or firmware described as a program. That is, the vehicle height detection device 100 includes a memory 92 that stores a program and a processor 91 that executes the program.

  In the program, the vehicle height detection device 100 is a vehicle specification that is information for specifying the current vehicle height, which is the vehicle height in the current state of the vehicle transmitted from a location outside the vehicle and having a vehicle height restriction, and the vehicle. The vehicle receives a short-range wireless beacon including information and vehicle height restriction information, and based on the information included in the beacon, the current vehicle height and vehicle are displayed on the display device 110 mounted on the vehicle corresponding to the vehicle identification information. A function for controlling to display a high limit is described. Further, the program causes the computer to execute the procedures or methods of the beacon receiving unit 10 and the display control unit 20.

  The processor 91 is, for example, a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, a DSP (Digital Signal Processor), or the like. The memory 92 is nonvolatile or volatile, such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable Read Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), etc. It is a semiconductor memory. Alternatively, the memory 92 may be any storage medium that will be used in the future, such as a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, and a DVD.

  A part of the functions of the beacon receiving unit 10 and the display control unit 20 described above may be realized by dedicated hardware, and the other part may be realized by software or firmware. As described above, the processing circuit realizes the above-described functions by hardware, software, firmware, or a combination thereof.

(Operation of vehicle height detection device and vehicle height detection method)
FIG. 4 is a flowchart showing the operation of the vehicle height detection device 100 and the vehicle height detection method in the first embodiment.

  In step S1, beacon receiving unit 10 receives a short-range wireless beacon including current vehicle height information, vehicle identification information, and vehicle height restriction information.

  In step S2, the display control unit 20 performs control to display the current vehicle height and the vehicle height limit on the display device 110 mounted on the vehicle corresponding to the vehicle identification information.

  Through the above steps, the display device 110 displays the current vehicle height and the vehicle height limit. The vehicle occupant is notified of the current vehicle height and the vehicle height limit.

(effect)
Summarizing the above, the vehicle height detection device 100 according to the first embodiment is provided in a vehicle, and is the current vehicle height that is the vehicle height in the current state of the vehicle that is transmitted from a location outside the vehicle and having vehicle height restrictions. Corresponding to vehicle identification information based on information included in the beacon and a beacon receiving unit 10 that receives a short-range wireless beacon including vehicle identification information and vehicle height restriction information that is information identifying the vehicle And a display control unit 20 that performs control to display the current vehicle height and the vehicle height limit on the display device 110 mounted on the vehicle.

  With the above configuration, the vehicle height detection device 100 can accurately notify the vehicle occupant of the vehicle height restriction and the current vehicle height. The vehicle height detection device 100 causes the vehicle driver to accurately recognize the vehicle height limit and the current vehicle height, and prevents the load on the vehicle body from being damaged.

  The vehicle height detection method according to the first embodiment is a vehicle specification that is information for specifying the current vehicle height, which is the vehicle height in the current state of the vehicle transmitted from a location outside the vehicle and having a vehicle height restriction, and the vehicle. The vehicle receives a short-range wireless beacon including information and vehicle height restriction information, and based on the information included in the beacon, the current vehicle height and vehicle are displayed on the display device 110 mounted on the vehicle corresponding to the vehicle identification information. Control to display the high limit.

  Such a vehicle height detection method makes it possible to accurately notify the vehicle occupant of the vehicle height restriction and the current vehicle height. The vehicle height detection method allows the driver of the vehicle to accurately recognize the vehicle height limit and the current vehicle height, and prevents the load on the vehicle body from being damaged.

<Embodiment 2>
A vehicle height detection device and a vehicle height detection method according to the second embodiment will be described. Note that the description of the same configuration and operation as in the first embodiment will be omitted.

(Configuration of vehicle height detection device)
FIG. 5 is a block diagram showing the configuration of the vehicle height detection device 101 and the device operating in association therewith in the second embodiment. FIG. 5 shows an external control device 200 and a display device 110 as devices that operate in association with the vehicle height detection device 101.

  The external control device 200 includes a beacon transmission unit 210, a vehicle height detection unit 220, a vehicle specific information detection unit 230, and a storage unit 240.

  The vehicle height detection unit 220 is provided at an entrance of a place having a vehicle height restriction or an approach path to a place having a vehicle height restriction. The vehicle height detection unit 220 detects the current vehicle height of a vehicle that is about to enter a place having a vehicle height restriction. The vehicle height detection unit 220 is, for example, a camera or an infrared sensor. In the second embodiment, the place having the vehicle height restriction is a parking lot having the vehicle height restriction due to the installation of the roof.

  The vehicle identification information detection unit 230 is about to enter a place having a vehicle height restriction, and detects vehicle identification information of the vehicle whose current vehicle height is detected by the vehicle height detection unit 220. For example, the vehicle identification information detection unit 230 recognizes a vehicle image captured by a camera and detects information on a vehicle license plate. The camera of the vehicle specific information detection unit 230 may be the same as the camera of the vehicle height detection unit 220.

  The storage unit 240 stores vehicle height restriction information.

  The beacon transmission unit 210 has a transmission antenna and is provided near the parking lot or the entrance of the parking lot. The beacon transmission unit 210 includes information on the current vehicle height detected by the vehicle height detection unit 220, vehicle identification information detected by the vehicle identification information detection unit 230, and a vehicle stored in the storage unit 240. A short-range beacon including high-limit information is transmitted from the transmission antenna.

  The vehicle height detection device 101 includes a beacon receiving unit 10 and a display control unit 20. Beacon receiving unit 10 and display control unit 20 are provided in the vehicle in the second embodiment.

  The beacon receiving unit 10 includes a receiving antenna provided in the vehicle, and receives a short-range wireless beacon transmitted from the receiving antenna of the beacon transmitting unit 210.

  The display control unit 20 performs control to display the vehicle height restriction on the display device 110 based on the vehicle height restriction information included in the beacon. Further, when the host vehicle is a vehicle corresponding to the vehicle specifying information included in the beacon, the display control unit 20 performs control to display the current vehicle height of the vehicle on the display device 110 in addition to the vehicle height restriction. The own vehicle is a vehicle on which the display device 110 controlled by the display control unit 20 is mounted. The vehicle specifying information of the host vehicle is stored in advance in a storage unit (not shown). In addition, the display control unit 20 performs control to further display a warning when the current vehicle height is higher than the vehicle height limit. The display control unit 20 performs control to further display a moving image indicating a state in which the distance between the vehicle and the place having the vehicle height restriction is approaching based on the reception intensity of the beacon.

  The display device 110 is mounted on the vehicle. The display device 110 is a display unit of the car navigation device in the second embodiment.

(Short range beacons)
The short-range wireless beacon is broadcast to the vehicle at regular intervals. FIG. 6 is a schematic diagram showing a relationship between a beacon transmission unit 210 that transmits a beacon and a vehicle. The short-range wireless beacon according to the second embodiment does not require pairing of devices that transmit and receive the beacon in advance. That is, the beacon receiver 10 receives a beacon from the beacon transmitter 210 without requiring mutual authentication of the devices in advance. The short-range wireless beacon allows the surrounding vehicles to communicate simultaneously while suppressing the traffic. In the second embodiment, the short-range wireless beacon is a beacon corresponding to the BLE (Bluetooth Low Energy) standard.

  The short-range wireless beacon includes arbitrary information. FIG. 7 is a diagram illustrating information included in the beacon received by the beacon receiving unit 10 according to the second embodiment. The beacon includes a beacon identifier 11, vehicle height restriction information 12, current vehicle height information 13, and vehicle identification information 14. The beacon identifier 11 is data for distinguishing beacons transmitted from other beacon oscillation devices and beacons transmitted from the external control device 200.

(Operation of vehicle height detection device and vehicle height detection method)
FIG. 8 is a flowchart showing the operation of the external control device 200 in the second embodiment. FIG. 9 is a diagram illustrating a state in which the vehicle 1 according to the second embodiment enters the entrance of the parking lot. A load 3 is loaded on the vehicle body 2 via an attachment or the like. The load 3 is, for example, a ski, a bicycle, a surfboard, or the like. The current vehicle height of the vehicle 1 is the sum of the vehicle height of the vehicle body 2 and the height of the load 3. That is, the current vehicle height is higher than the vehicle height of the vehicle body 2.

  In step S10, beacon transmission unit 210 transmits a beacon including vehicle height restriction information 12. Here, the beacon including the vehicle height restriction information 12 is constantly transmitted at a constant cycle.

  In step S11, beacon transmission section 210 determines whether the current vehicle height of vehicle 1 and vehicle specifying information 14 have been detected. If it is determined that they have been detected, step S12 is executed. If it is determined that they are not detected, step S10 is executed again. FIG. 10 is a diagram illustrating a state where the current vehicle height of the vehicle 1 and the vehicle identification information 14 are detected. The vehicle height detection unit 220 detects the current vehicle height of the vehicle 1. The vehicle height detection unit 220 detects, for example, that the vehicle 1 is reflected in the camera, and detects the vehicle height from the image of the camera. The vehicle identification information 14 is detected by the vehicle identification information detection unit 230. The vehicle specific information detection unit 230 detects the information of the license plate by recognizing an image of the license plate photographed by the camera.

  In step S12, beacon transmission unit 210 transmits a beacon including current vehicle height information 13, vehicle identification information 14, and vehicle height restriction information 12. The beacon including the current vehicle height information 13 and the vehicle identification information 14 is transmitted for a certain time, for example. Thereafter, Step S10 is executed again.

  FIG. 11 is a flowchart illustrating the operation of the vehicle height detection device 101 and the vehicle height detection method according to the second embodiment.

  In step S20, beacon receiver 10 receives the beacon transmitted in step S10 in FIG. At that time, the beacon receiving unit 10 is a beacon transmitted from the beacon transmitting unit 210 by the beacon identifier 11, that is, a beacon for executing each step of the vehicle height detection method shown below. Identify.

  In step S <b> 21, the display control unit 20 performs control for causing the display device 110 to display an image of the place having the vehicle height restriction and the vehicle height restriction based on the vehicle height restriction information 12 included in the beacon. FIG. 12 is a diagram illustrating an example of the vehicle height restriction displayed on the display device 110. Here, the display control unit 20 performs control to display the screen in which the vehicle 1 and the entrance of the parking lot having the vehicle height restriction are visualized by the central projection view. In addition, the display control unit 20 performs control to display the vehicle height limit as a numerical value in a screen showing the vehicle 1 and the entrance of the parking lot. In FIG. 12, it is displayed that the vehicle height limit is “2 m”. That is, the display device 110 displays a screen in which the vehicle 1 and the vehicle height restriction are visualized. Furthermore, the display control unit 20 performs control to display a notice “There is a vehicle height limit. That attention scrolls in the screen. The display relating to the vehicle height restriction is displayed on an arbitrary screen on the display device 110. For example, the image is displayed on the screen already displayed on the display device 110.

  In step S22, the display control unit 20 determines whether or not the vehicle 1 on which the display device 110 controlled by the display control unit 20 is mounted is a vehicle corresponding to the vehicle specifying information 14 included in the beacon. That is, the display control unit 20 determines whether or not the vehicle specifying information 14 included in the beacon matches the vehicle specifying information of the own vehicle. If it is determined that the information matches, step S23 is executed. If it is determined that these pieces of information do not match, step S20 is executed again.

  In step S23, the display control unit 20 performs control for causing the display device 110 to display the vehicle height limit and the current vehicle height. FIG. 13 is a diagram illustrating an example of the vehicle height restriction and the current vehicle height displayed on the display device 110. On the screen in which the vehicle 1 and the entrance of the parking lot are visualized by the central projection view, the display control unit 20 performs control to display the vehicle height limit and the current vehicle height as numerical values. Here, it is displayed that the vehicle height limit is “2 m” and the current vehicle height is “2.1 m”.

  In step S24, the display control unit 20 determines whether or not the current vehicle height is higher than the vehicle height limit. If it is determined that the current vehicle height is greater than or equal to the vehicle height limit, step S25 is executed. If it is determined that the current vehicle height is lower than the vehicle height limit, step S20 is executed again.

  In step S25, the display control unit 20 performs control to display a warning regarding that the current vehicle height is higher than the vehicle height limit. The warning may be a warning notifying that the vehicle 1 cannot enter. As shown in FIG. 13, the display control unit 20 performs control to display a warning that “the vehicle height is over. Please stop and return.” The warning scrolls in the screen.

  In step S <b> 26, the display control unit 20 determines whether or not the reception intensity of the beacon increases with time. If it is determined that the reception intensity is high, step S27 is executed. If it is determined that the reception intensity is not strong, step S20 is executed again.

  In step S <b> 27, the display control unit 20 performs control for causing the display device 110 to display a moving image indicating a state in which the vehicle 1 is approaching a place having a vehicle height restriction. FIG. 14 is a diagram illustrating an example of the vehicle height restriction and the current vehicle height displayed on the display device 110. In FIG. 14, a state in which the vehicle 1 is approaching the entrance of the parking lot is displayed by animation. In addition, the moving image which shows the state where the parking lot is approaching the vehicle 1 may be displayed.

  Summarizing the above, the display control unit 20 of the vehicle height detection device 101 according to the second embodiment displays an image represented by the location having the vehicle height restriction, the vehicle 1 and the projection, The vehicle height is controlled by a numerical value together with the image.

  Based on the information included in the beacon, the display control unit 20 of the vehicle height detection device 101 performs control to further display a warning regarding the current vehicle height being greater than or equal to the vehicle height limit on the display device 110.

  The display control unit 20 of the vehicle height detection device 101 is approaching the display device 110 between the vehicle 1 whose current vehicle height is equal to or higher than the vehicle height limit and a place having the vehicle height limit based on the reception intensity of the beacon. Control to further display a moving image indicating the state is performed.

  With such a configuration, the display device 110 provided inside the vehicle 1 cooperates with the external control device 200 to accurately display the vehicle height limit and the current vehicle height, thereby displaying the information on the vehicle 1. Allows accurate notification to passengers. The display device 110 displays that the current vehicle height of the vehicle 1 is higher than the vehicle height limit. The display device 110 displays the vehicle height limit and the current vehicle height numerically in an image in which the entrance of the parking lot and the vehicle 1 are visualized by a projection view. The vehicle height limit and the current vehicle height are accurately displayed. The driver can accurately recognize the vehicle height limit and the current vehicle height. The vehicle height detection device 101 prevents the vehicle 1 from entering a place having the vehicle height restriction in advance. The vehicle height detection device 101 prevents the load 3 loaded on the vehicle body 2 from being damaged. Moreover, since the vehicle height detection apparatus 101 prevents the congestion of the following vehicle which the vehicle 1 which entered accidentally causes, etc., each vehicle can shorten movement time. This is particularly effective when a ski, bicycle, surfboard or the like is mounted on the vehicle body 2 for a limited time.

(Modification 1 of Embodiment 2)
FIG. 15 is a diagram illustrating a state in which the vehicle 1 turns left and enters an entrance of a parking lot having a vehicle height restriction. In the case of a parking lot where the vehicle 1 turns left or right and enters the entrance, the vehicle 1 may be hidden behind the structure of the parking lot, and the detection of the current vehicle height by the vehicle height detection unit 220 of the external control device 200 may be delayed. There is. Further, when a warning after detection is displayed outside the vehicle 1, the warning display may be hidden behind the structure of the parking lot, and the driver may be delayed in noticing the warning display.

  FIG. 16 is a diagram showing an example of a map of the parking lot 250 and its guideway 260 in the first modification of the second embodiment. The taxiway 260 turns left at the entrance of the parking lot 250. Here, beacon transmission part 210 is provided near the entrance of parking lot 250 as an example. The vehicle height detection part 220 and the vehicle specific information detection part 230 are provided in the middle of the taxiway 260 as an example.

  The vehicle 1 </ b> A at the position P <b> 1 near the entrance of the taxiway 260 receives a beacon including vehicle height restriction information at the beacon receiving unit 10. The display control unit 20 performs control to display the vehicle height limit on the display device 110 mounted on the vehicle 1A. The image shown in FIG. 12 is displayed on the display device 110 of the vehicle 1A.

  The vehicle height detection unit 220 and the vehicle identification information detection unit 230 detect the current vehicle height and vehicle identification information of the vehicle 1B at a position P2 in the middle of the guideway 260. The display control unit 20 performs control to display the current vehicle height on the display device 110 mounted on the vehicle 1B. The image shown in FIG. 13 is displayed on the display device 110 of the vehicle 1B.

  Further, the display control unit 20 is mounted on the vehicle 1C based on the reception intensity of the beacon received by the beacon receiving unit 10 mounted on the vehicle 1C traveling from the position P2 to the position P3 just before the entrance of the parking lot 250. The display device 110 is further controlled to display a moving image indicating a state in which the distance between the vehicle 1C and the parking lot 250 is approaching. The image shown in FIG. 14 is displayed on the display device 110 of the vehicle 1C.

  Thus, even in a parking lot where the vehicle 1 needs to turn left and enter, the driver can visually check the current vehicle height and the vehicle height limit. The vehicle height detection device 101 makes the driver of the vehicle 1 accurately recognize the vehicle height limit and the current vehicle height, and prevents the vehicle 1 exceeding the vehicle height limit from entering a parking lot having a vehicle height limit. . Further, the display control unit 20 may perform control for displaying the map image shown in FIG. 16 on the display device 110 together with the images shown in FIGS. 12 to 14. The same applies to the case where the vehicle turns right and enters the parking lot.

(Modification 2 of Embodiment 2)
FIG. 17 is a diagram illustrating a state in which the vehicle 1 according to the second modification of the second embodiment is moving backward in the parking lot. In the backward direction of the vehicle 1, the height of the parking lot is lowered on the way. That is, here, the place where the vehicle height is restricted is a place where the height of the parking lot is lower than the surroundings. The vehicle height detection unit 220 of the external control device 200 is provided around the position where the height of the parking lot changes. When the rear camera 4 that captures the rear of the vehicle 1 is installed in the vehicle 1, an image captured by the rear camera 4 is displayed on the display device 110 mounted on the vehicle 1. The driver can recognize the rear state of the vehicle 1 from the video. However, the driver cannot recognize the current vehicle height of the vehicle 1. The vehicle height detection device 101 according to the second embodiment performs control to display the vehicle height restriction and the current vehicle height detected by the vehicle height detection unit 220 on the display device 110. The vehicle height limit and the current vehicle height are displayed numerically in an image in which the entrance of the parking lot and the vehicle 1 are visualized by a projection view. Therefore, the driver can visually confirm the relationship. As described above, the vehicle height detection device 101 allows the driver of the vehicle 1 to accurately recognize the vehicle height limit and the current vehicle height, and prevents the load 3 on the vehicle body 2 from being damaged.

<Embodiment 3>
A vehicle height detection device and a vehicle height detection method according to Embodiment 3 will be described. Note that the description of the same configuration and operation as in Embodiment 1 or 2 is omitted.

(Configuration of vehicle height detection device)
FIG. 18 is a block diagram showing the configuration of the vehicle height detection device 102 and the device operating in association therewith in the third embodiment. FIG. 18 shows an external control device 200, a first display device 111, a second display device 112, and a vehicle control device 120 as devices that operate in relation to the vehicle height detection device 102.

  External control device 200 has the same configuration as that of the second embodiment.

  The vehicle height detection device 102 further includes a control signal output unit 30 and a beacon transmission unit 40 in addition to the beacon reception unit 10 and the display control unit 20.

  The display control unit 20 performs control to display the vehicle height restriction and the current vehicle height on the first display device 111 or the second display device 112 mounted on the vehicle 1.

  The control signal output unit 30 outputs a control signal for starting control for stopping the vehicle 1 whose current vehicle height is equal to or higher than the vehicle height limit, based on the reception intensity of the beacon and the speed of the vehicle 1.

  The beacon transmission unit 40 is provided in the vehicle 1. The beacon transmission unit 40 transmits a short-range wireless beacon to the periphery of the vehicle 1 including information on a state in which the vehicle 1 whose current vehicle height is equal to or higher than the vehicle height limit is stopped. Hereinafter, the state where the vehicle 1 is stopped is referred to as an emergency stop state, and the information about the state where the vehicle 1 is stopped is referred to as emergency stop information.

  The first display device 111 and the second display device 112 are a display unit and a back monitor of the car navigation device, respectively, in the third embodiment.

  The vehicle control device 120 controls the traveling state of the vehicle 1. The vehicle control device 120 receives the control signal output from the control signal output unit 30. The vehicle control device 120 starts control for stopping the vehicle 1 based on the control signal. The vehicle 1 stops by the control.

(Short range beacons)
FIG. 19 is a diagram illustrating information included in a beacon transmitted by beacon transmission unit 40 in the third embodiment. The beacon transmitted from the beacon transmission unit 40 includes a beacon identifier 11, vehicle height restriction information 12, current vehicle height information 13, vehicle identification information 14, and emergency stop information 15. However, the beacon transmitted from the beacon transmission unit 40 illustrated in FIG. 19 is an example, and does not necessarily include the vehicle height restriction information 12, the current vehicle height information 13, and the vehicle identification information 14.

(Operation of vehicle height detection device and vehicle height detection method)
In the third embodiment, the operation of the external control device 200 is the same as that of the second embodiment, and the description thereof is omitted. FIG. 20 is a flowchart illustrating the operation of the vehicle height detection device 102 and the vehicle height detection method according to the third embodiment.

  In step S30, beacon receiver 10 receives the beacon transmitted in step S10 in FIG.

  In step S31, the beacon receiving unit 10 determines whether or not the emergency stop information 15 is included in the received beacon. If it is determined that the emergency stop information 15 is included, step S32 is executed. If it is determined that the emergency stop information 15 is not included, step S33 is executed.

  In step S <b> 32, the display control unit 20 notifies that there is another vehicle that has urgently stopped around the vehicle 1. The notification may further include a notification that prompts the driver to stop the vehicle 1. The display control unit 20 may notify that there is a possibility that another vehicle may move backward or forward and escape from a place having a vehicle height restriction. The control signal output unit 30 outputs a control signal for starting control for stopping the vehicle 1 when the vehicle 1 has set a place where the vehicle 1 has a height restriction as a destination.

  In step S33, the display control unit 20 determines whether or not the vehicle height restriction information 12 is included in the beacon. If it is determined that the vehicle height restriction information 12 is included, step S34 is executed. If it is determined that the vehicle height restriction information 12 is not included, step S30 is executed again.

  In step S34, the display control unit 20 determines whether or not the vehicle 1 is backing. If it is determined that the vehicle 1 is backing, step S35 is executed. If it is determined that the vehicle 1 is not backing, step S36 is executed.

  In step S35, the display control unit 20 performs control for causing the second display device 112 to display an image of a place having a vehicle height restriction and the vehicle height restriction. Here, the second display device 112 is a back monitor.

  In step S <b> 36, the display control unit 20 performs control for causing the first display device 111 to display an image of a place having a vehicle height restriction and the vehicle height restriction. Here, the first display device 111 is a display unit of the car navigation device.

  In step S37, the display control unit 20 determines whether or not the vehicle 1 on which the display device 110 controlled by the display control unit 20 is mounted is a vehicle corresponding to the vehicle specifying information 14 included in the beacon. That is, the display control unit 20 determines whether or not the vehicle specifying information 14 included in the beacon matches the vehicle specifying information of the own vehicle. If it is determined that the information matches, step S38 is executed. If it is determined that these pieces of information do not match, step S30 is executed again.

  In step S38, the display control unit 20 determines whether or not the vehicle 1 is backing. If it is determined that the vehicle 1 is backing, step S39 is executed. If it is determined that the vehicle 1 is not backing, step S40 is executed.

  In step S39, the display control unit 20 performs control to further display the image of the vehicle 1 and the current vehicle height on the second display device 112 based on information included in the beacon.

  In step S40, the display control unit 20 performs control to further display the image of the vehicle 1 and the current vehicle height on the first display device 111 based on the information included in the beacon.

  In step S41, control signal output unit 30 determines whether or not the speed of vehicle 1 is equal to or higher than a predetermined speed and the reception intensity of the beacon is equal to or higher than a predetermined intensity. If it is determined that the speed of the vehicle 1 is equal to or higher than a predetermined speed and the reception intensity of the beacon is equal to or higher than a predetermined intensity, step S42 is executed. If it is determined that the speed of the vehicle 1 is not equal to or higher than a predetermined speed, or the beacon reception intensity is not equal to or higher than a predetermined intensity, step S30 is executed again. In step S <b> 41, the control signal output unit 30 acquires the speed of the vehicle 1 from the vehicle control device 120, for example. The predetermined speed is, for example, 0 km / h.

  In step S42, the control signal output unit 30 outputs a control signal for starting control for stopping the vehicle 1. The vehicle control device 120 receives the control signal and activates the control for stopping the vehicle 1. The vehicle 1 is urgently stopped by the control. The control signal may include a signal for starting control for lighting the hazard lamp in the vehicle 1. In that case, the vehicle 1 stops while lighting the hazard lamp. This function is a so-called safety / security function.

  In step S43, beacon transmission unit 40 transmits a beacon including emergency stop information 15 indicating that vehicle 1 is in an emergency stop state. The other vehicle receives the beacon including the emergency stop information 15 and stops under the control of the driver or the vehicle control device 120. That is, steps S30 to S32 are executed in the other vehicle.

  FIG. 21 is a diagram illustrating a state in which the vehicle 1 has been urgently stopped at the entrance of a parking lot having a vehicle height restriction. By the operation of the control signal output unit 30, the vehicle 1 is surely stopped before the entrance of the parking lot. However, even if the vehicle 1 stops at the entrance of the parking lot, there is a possibility that the vehicle 1 may get stuck between the following other vehicle 5 and the entrance of the parking lot. As a result, traffic congestion occurs. FIG. 22 is a diagram illustrating a state in which the succeeding other vehicle 5 that has received the beacon including the emergency stop information 15 is stopped. The succeeding other vehicle 5 can take a stop or avoid operation before approaching the vehicle 1 that is in an emergency stop in front. The vehicle height detection device 102 prevents the occurrence of traffic congestion by cooperating with the vehicle height detection device of the subsequent other vehicle 5. Each vehicle 1 does not require support for getting out of traffic jams by guards or the like.

(effect)
Summarizing the above, the vehicle height detection device 102 according to the third embodiment controls the control signal for starting the control for stopping the vehicle 1 whose current vehicle height is equal to or higher than the vehicle height limit based on the time change of the reception intensity of the beacon. Is further included.

  With such a configuration, the vehicle 1 stops in front of a place having a vehicle height restriction. The vehicle height detection device 102 prevents the load 3 on the vehicle body 2 from being damaged.

  The vehicle height detection device 102 according to the third embodiment is provided in the vehicle 1 and transmits a short-range wireless beacon including information on a state in which the vehicle 1 whose current vehicle height is equal to or higher than the vehicle height limit is stopped around the vehicle 1. It further includes a beacon transmission unit 40 that transmits to.

  With such a configuration, the following other vehicle can take a stop or avoid operation before approaching the vehicle 1 that is urgently stopped ahead. The vehicle height detection device 102 prevents occurrence of traffic jams.

<Embodiment 4>
In the above embodiments, the configuration of the vehicle height detection device mounted on the vehicle 1 is shown as an example. The vehicle height detection device can also be applied to a system constructed by appropriately combining a navigation device, a communication terminal, a server, and functions of applications installed in these devices. Here, the navigation device includes, for example, a PND (Portable Navigation Device). Communication terminals include mobile terminals such as mobile phones, smartphones, and tablets.

  FIG. 23 is a block diagram showing the configuration of the vehicle height detection device 100 and the device operating in association therewith in the fourth embodiment.

  The display control unit 20 and the communication device 140 of the vehicle height detection device 100 are provided in the server 300. The beacon receiving unit 10, the communication device 130, and the display device 110 of the vehicle height detection device 100 are provided in the vehicle 1. The vehicle height detection device 100 receives a beacon transmitted from the beacon transmission unit 210 of the external control device 200 at the beacon reception unit 10 provided in the vehicle 1. The display control unit 20 acquires the current vehicle height information 13, the vehicle identification information 14, and the vehicle height restriction information 12 included in the beacon via the communication device 130 of the vehicle 1 and the communication device 140 of the server 300. In addition, the display control unit 20 performs control to display the vehicle height limit and the current vehicle height on the display device 110 via each communication device.

  As described above, some of the functions or components of the vehicle height detection device 100 may be provided in the server 300 and the other part may be provided in the vehicle 1. By providing a part of the vehicle height detection device 100 in the server 300, the configuration of the device mounted on the vehicle 1 can be simplified.

  It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.

  Although the present invention has been described in detail, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.

  1 vehicle, 10 beacon receiving unit, 12 vehicle height limit information, 13 current vehicle height information, 14 vehicle specifying information, 15 emergency stop information, 20 display control unit, 30 control signal output unit, 40 beacon transmission unit, 100 vehicle High detection device, 110 display device, 200 external control device, 210 beacon transmission unit, 220 vehicle height detection unit, 230 vehicle specific information detection unit.

Claims (6)

Vehicle identification information, which is provided in a vehicle and is information identifying the vehicle and information on the current vehicle height, which is the vehicle height in the current state of the vehicle, transmitted from a location outside the vehicle and having a vehicle height restriction And a beacon receiving unit that receives a beacon of short-range wireless including the vehicle height restriction information,
A vehicle height comprising: a display control unit that performs control to display the current vehicle height and the vehicle height restriction on a display device mounted on the vehicle corresponding to the vehicle identification information based on information included in the beacon. Detection device. The display control unit
The vehicle height detection device according to claim 1, wherein control is performed to further display a warning regarding the current vehicle height being greater than or equal to the vehicle height limit on the display device based on information included in the beacon. The display control unit
Based on the reception intensity of the beacon, the display device further displays a moving image indicating a state in which the distance between the vehicle having the vehicle height limit equal to or higher than the vehicle height limit and the place having the vehicle height limit is approaching. The vehicle height detection device according to claim 1 or 2, wherein control is performed.   And a control signal output unit configured to output a control signal for starting a control for stopping the vehicle whose current vehicle height is equal to or higher than the vehicle height limit based on the reception intensity of the beacon and the vehicle speed. The vehicle height detection device according to any one of claims 1 to 3.   A beacon transmission unit that is provided in the vehicle and further transmits a short-range wireless beacon including information on a state in which the vehicle is stopped when the current vehicle height is equal to or greater than the vehicle height limit to the periphery of the vehicle. The vehicle height detection device according to any one of claims 1 to 4. A vehicle height that is a vehicle height in a current state of the vehicle that is transmitted from a location outside the vehicle and that has a vehicle height restriction, vehicle identification information that is information identifying the vehicle, and the vehicle height restriction information; Receiving a short-range wireless beacon including
A vehicle height detection method for performing control to display the current vehicle height and the vehicle height restriction on a display device mounted on the vehicle corresponding to the vehicle identification information, based on information included in the beacon.

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