JP2017167091A - Drive support device, drive support method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drive support device that can acquire the direction and angle of the steering wheel operated by a driver to deal with an actual changing scene without causing delay.SOLUTION: A drive support device comprises: rotation information acquisition means that acquires rotation information on the direction of rotation and angle of rotation of a portable terminal attached to the steering wheel of a vehicle; current position acquisition means that acquires the current position of the portable terminal; and control means that changes image information corresponding to the current position according to the rotation information and displays the changed image information on display means.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a driving support device, a driving support method, and a program.

  Conventionally, in a driving support device such as a car navigation system (hereinafter simply referred to as a car navigation system), the latitude / longitude information (current position) of the car is acquired by GPS (Global Positioning System), and the direction detection means such as a gyro is used. Information about the direction in which the vehicle travels is acquired, and an icon or the like indicating the position of the vehicle is superimposed on the map information displayed on the display screen.

  Further, by rotating the map information displayed on the display screen based on the direction in which the automobile travels detected by the direction detection means, image information with high visibility for the driver is provided.

  However, when the car changes direction at the intersection, the direction in which the car travels can be grasped, but the change in the map information displayed on the display screen with respect to the actual scenery that changes from moment to moment is unavoidable. It will be late.

  In addition, when the car navigation system gives a right turn at an intersection, it is impossible to recognize whether the driver is actually changing directions as instructed. In particular, immediately after starting the direction change, it is difficult to recognize which direction the steering wheel is operated.

  That is, even if the driver is operating the steering wheel in a different direction immediately after starting the direction change, the driver cannot be alerted such as a warning. In addition, when it is recognized that the steering wheel operation is performed in a different direction from the direction in which the automobile changes every moment, it is too late even if a warning or the like is issued. If the direction change is not performed as instructed, the car navigation system needs to execute a route search again to give a new instruction.

  For this reason, there is known a car navigation system having a function of grasping the state of handle operation by detecting the rotation direction of the handle using an optical rotation sensor or a rotary resistance volume attached to the rotating portion of the handle ( For example, see Patent Document 1).

JP 2011-227888 A

  However, in the prior art of Patent Document 1, it is necessary to attach a detection sensor separately to the rotating part of the steering wheel of the automobile in advance, and the installation work of the detection sensor, wiring work, and the like occur, so that There was a problem that it could not be implemented. In particular, if the vehicle is not owned by a car such as a rental car or car sharing, the sensor as in Patent Document 1 cannot be attached.

  An object of the present invention is to provide a driving support device, a driving support method, and a program that can easily acquire an operation direction and an angle of a driver's steering wheel and can change an image corresponding to a current position without causing a delay. It is to provide.

In order to solve the above-mentioned problem, the invention according to claim 1
Rotation information acquisition means for acquiring rotation information about the rotation direction and rotation angle of the mobile terminal attached to the handle of the automobile;
Current position acquisition means for acquiring a current position of the mobile terminal;
Control means for causing the display means to display image information corresponding to the current position, corresponding to the rotation information;
It is characterized by providing.

The invention described in claim 2 is the driving support apparatus according to claim 1,
The control unit displays an alert image on the display unit when the rotation direction of the acquired rotation information is determined to be different from a navigation instruction.

The invention according to claim 3 is the driving support device according to claim 1,
The control means, when determining that the rotation direction is a direction different from a navigation instruction, causes the user to be notified of alert information.

The invention according to claim 4 is the driving support device according to any one of claims 1 to 3,
Comprising azimuth obtaining means for obtaining the azimuth in which the automobile travels,
The control means determines whether the amount of rotation of the steering wheel is excessive or insufficient based on the direction of the vehicle acquired by the direction acquisition means and the rotation angle of the acquired rotation information, and notifies the user of the determination result. It is characterized by that.

The invention according to claim 5 is the driving support device according to any one of claims 1 to 4,
The image information is map information or landscape information.

The invention described in claim 6
A driving support method for driving a user using a computer,
Obtaining rotation information relating to the rotation direction and rotation angle of the mobile terminal attached to the handle of the automobile;
Obtaining a current position of the mobile terminal;
Changing the image information corresponding to the current position according to the rotation information and causing the display unit to display the image information;
It is characterized by including.

The invention described in claim 7
Computer
Rotation information acquisition means for acquiring rotation information about the rotation direction and rotation angle of the mobile terminal attached to the handle of the automobile;
Current position acquisition means for acquiring a current position of the mobile terminal;
Control means for causing the display means to display image information corresponding to the current position, corresponding to the rotation information;
It is a program that functions as

  The operation direction and angle of the driver's steering wheel can be easily acquired, and the image corresponding to the current position can be changed without causing a delay.

It is explanatory drawing which shows an example of the state which mounted | wore the steering wheel with the driving assistance device which concerns on embodiment. It is explanatory drawing which shows another example of the state which mounted | wore the driving assistance device. It is a block diagram which shows the structure of a driving assistance device. It is a flowchart which shows an example of operation | movement of a driving assistance device. It is explanatory drawing which shows an example of the state which rotated the handle | steering-wheel. It is a flowchart which shows an example of other operation | movement of a portable terminal. It is explanatory drawing which shows an example of the display screen of a portable terminal. It is explanatory drawing which shows another example of the display screen of a portable terminal. It is explanatory drawing which shows another example of the display screen of a portable terminal.

(Embodiment)
[1. Description of configuration]
Hereinafter, a driving support apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings. However, the scope of the invention is not limited to the illustrated examples.

[1-1. Explanation of configuration of driving support device]
The configuration of the driving support apparatus according to the embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is an explanatory diagram illustrating an example of a state in which the driving support device 1 according to the present embodiment is mounted on a handle. 1A is a schematic front view, and FIG. 1B is a schematic side view.

  As shown in FIG. 1, the driving support apparatus 1 includes a mobile terminal 101 and a mounting portion 102 for mounting the mobile terminal 101 on a car handle HD11.

  The portable terminal 101 is an information processing apparatus that includes a display unit, an operation unit, a current position detection unit, and the like, and can realize a car navigation function. For example, the portable terminal 101 is a portable information processing device such as a smartphone, and realizes a car navigation function by executing a previously installed car navigation application program.

  The mounting unit 102 is a member that mounts such a portable terminal 101 at a mounting position of a steering wheel of an automobile. For example, the mounting unit 102 is a holder that holds a smartphone, a hook-and-loop fastener that is attached to the back surface of the smartphone or the mounting surface of the handle, and the like. Anything that can be worn is acceptable.

  In FIG. 1, the mobile terminal 101 is mounted on the steering wheel HD11 of the automobile in the horizontal direction (longitudinal direction is horizontal). However, as shown in FIG. May be mounted on the steering wheel HD11 of the automobile.

Furthermore, the structure of the driving assistance apparatus 1 which concerns on this embodiment is demonstrated.
As shown in FIG. 3, the driving support device 1 includes a navigation server device 10 as an information processing device and a terminal device 30 mounted on the vehicle C. Each device of the destination guidance system 1 is connected to a communication network N. The communication network N is specifically the Internet, a telephone line network such as a telecommunications carrier, a mobile phone communication network, or the like.

  The navigation server device 10 is an information device such as a PC or WS (Work Station), for example, and probe information (running information) transmitted from the terminal device 30 via the communication network N is accumulated. Yes. The navigation server device 10 is configured by one unit, but is not limited thereto, and may be configured by a plurality of units.

  The terminal device 30 is a portable terminal device that is owned and used by each driver such as a smart device such as a smartphone or a tablet or a mobile phone. The terminal device 30 is installed with an application (hereinafter referred to as a car navigation application) that performs a route search to the destination and realizes a car navigation function that guides the guidance route according to the search result. Further, the terminal device 30 communicates with the navigation server device 10 using the communication network N (specifically, a communication line of the terminal device 30 or a wireless local area network (LAN)).

[1-1-1. Description of the configuration of the navigation server device]
Next, the configuration of the navigation server device 10 will be described.
The navigation server device 10 includes a control unit 11, an operation unit 12, a display unit 13, a storage unit 14, and a communication unit 15.

  The control unit 11 performs central control of the operation of the navigation server device 10. Specifically, the control unit 11 includes a CPU, a ROM, a RAM, and the like. The program data stored in the ROM or the storage unit 14 expanded in the RAM work area and the CPU cooperate with the CPU. The respective units of the server device 10 are controlled in an integrated manner.

The operation unit 12 includes, for example, a character input key, a numeric input key, a keyboard having keys associated with various functions, a pointing device such as a mouse, and the like, and receives an operation input from a user to input the operation. A corresponding operation signal is output to the control unit 11.
The display unit 13 includes a display such as an LCD (Liquid Crystal Display), for example, and displays an image based on the display control signal output from the control unit 11 on the display screen.

The storage unit 14 is configured by, for example, an HDD (Hard Disk Drive), a semiconductor memory, and the like, and stores data such as program data and various setting data in a readable / writable manner from the control unit 11.
The storage unit 14 stores map data, audio data, and the like. The map data is, for example, map information covering a wide area (corresponding to a plurality of scales), road information, various symbol information such as facilities, seas, and rivers. The voice data is, for example, data of a message (voice guidance) made up of words, phrases, and the like necessary for route guidance.

  The communication unit 15 is a communication interface having a communication IC (Integrated Circuit), a communication connector, and the like, and performs data communication via the communication network N using a predetermined communication protocol under the control of the control unit 11. For example, the communication unit 15 receives destination information set by the driver, current position information detected by the current position detection unit 26, probe information generated by the control unit 31, and the like.

[1-1-2. Description of terminal device configuration]
Next, the configuration of the terminal device 30 will be described.
The terminal device 30 includes a control unit 31, an operation unit 32, a display unit 33, an audio output unit 34, a storage unit 35, a current position detection unit 36, and a communication unit 37. .

The control unit 31 performs central control of the operation of the terminal device 30. Specifically, the control unit 31 includes a CPU, a ROM, a RAM, and the like. The program data stored in the ROM or the storage unit 35 developed in the RAM work area and the CPU are used in cooperation with the CPU. The overall control of each unit of the device 30 is performed.
Moreover, the control part 31 implement | achieves the function of a car navigation in cooperation with the navigation server apparatus 10 by running the car navigation application memorize | stored in the memory | storage part 35. FIG. Specifically, when the car navigation application is activated by the driver and the destination is set, the control unit 31 sends the destination information and the current position information detected by the current position detection unit 36 via the communication unit 37. It transmits to the navigation server device 10.
Next, the control unit 31 of the terminal device 30 converts the route search result obtained by the control unit 11 of the navigation server device 10 based on the destination information and the current position information transmitted from the terminal device 30 into map data and It is received via the communication unit 37 together with the audio data.
Next, the control unit 31 of the terminal device 30 displays the route search result on the display unit 33 and causes the voice output unit 34 to output voice guidance.

The operation unit 32 includes, for example, a key input unit including a home button and the like, and a touch panel formed integrally with the display unit 33. The operation unit 32 receives an operation input from the driver and outputs an operation signal corresponding to the operation input. Output to the control unit 31.
The display unit 33 includes a display such as an LCD and an FPD (Flat Panel Display) using an organic EL (Electro Luminescence) element, and displays an image based on the display control signal output from the control unit 31 on the display screen. To do. For example, the display unit 33 is configured to display various information (for example, display information for navigation such as a map screen, an icon, route guidance, and the current vehicle) based on the display data (map data and the like) output from the control unit 31. The vehicle mark indicating the position) is displayed.

  The audio output unit (output unit) 34 includes a D / A converter, an amplifier, a speaker, and the like. The audio output unit 34 converts the audio data output from the control unit 31 into an analog audio signal and outputs the audio.

  The storage unit 35 is configured by, for example, an HDD, a semiconductor memory, and the like, and stores data such as program data and various setting data in a readable / writable manner from the control unit 31.

The current position detection unit 36 includes a GPS module, a gyro, and the like. The GPS module includes a GPS antenna and the like. The GPS antenna receives GPS signals transmitted from a plurality of GPS satellites launched into a low earth orbit. The GPS antenna receives GPS signals transmitted from at least three GPS satellites, detects the absolute current position (latitude, longitude) of the vehicle C based on the received GPS signals, and outputs it to the control unit 31 To do.
The gyro includes an angle sensor and the like. The angle sensor detects the angular velocity of the vehicle (the rotation angle in the horizontal direction per unit time) and calculates the amount of change in the moving direction. Further, the current position detection unit 36 detects the rotation direction and rotation angle of the mobile terminal 30 and outputs it to the control unit 1.

  The communication unit 37 includes an antenna and a communication circuit, and performs wireless communication with an external device under the control of the control unit 31. Specifically, the communication unit 37 performs data communication via the communication network N by being relayed by the base station. For example, the communication unit 37 transmits destination information set by the driver, current position information detected by the current position detection unit 36, probe information generated by the control unit 31, and the like.

[2. Explanation of operation]
A specific operation of the driving support device 1 in the embodiment of the present invention will be described in detail with reference to FIGS. Hereinafter, for the sake of convenience of explanation, the processing that is mainly performed by the control unit 11 of the navigation server device 10 and the control unit 31 of the terminal device 30 will be described using the “driving support device 1” as the main subject of the processing.
[2-1. Description of operation of driving support device 1]
The operation of the driving support device 1 will be described with reference to the flowchart of FIG.
The driving support device 1 controls the current position detection unit 36 to detect the current angle of the mobile terminal 30, in other words, the steering wheel rotation angle (step S <b> 41), and controls the current position detection unit 36 to control the current mobile phone. The current position of the terminal 30 is acquired (step S42).

  Then, the driving support device 1 reads out the image information from the storage unit 14 or the storage unit 35, displays the image information on the display screen of the display unit 33 based on the acquired current position (step S43), and shows the current position of the vehicle. An icon is displayed over the image information (step S44).

  The driving support device 1 determines whether or not the rotation angle of the handle detected by the current position detection unit 36 has changed (step S45), and determines that the rotation angle of the handle has not changed (step S45: No), it returns to step S41.

  On the other hand, when the driving assistance apparatus 1 determines that the rotation angle of the handle has changed (step S45: Yes), the image information is rotated according to the change in the rotation angle of the handle (step S46).

  Specifically, for example, as shown in FIG. 5, when the handle HD11 is rotated to the right, the driving support device 1 uses the image information MP51 on the display screen of the display unit 33 as the handle. Rotate according to the change of rotation angle.

  Finally, the driving support device 1 determines whether or not to end the navigation process (step S47), and when determining that the navigation process is not ended (step S47: No), returns to step S41 and ends the navigation process. If so (step S47: Yes), the navigation process is terminated.

As described above, the driving support device 1 directly detects the rotation angle of the handle by the current position detection unit 36 instead of the traveling direction of the automobile, and rotates the image information according to the change in the rotation angle of the handle. Thus, it is possible to cope with a changing actual scene without causing a delay.
In addition, since the rotation information is acquired using the angle sensor of the portable terminal 30, the rotation angle of the handle can be easily detected without performing a net mounting operation or the like as in the prior art.

(Modification 1)
[3-1. Alert for departure from route]
In the description of the embodiment, the image information is rotated according to the detected change in the rotation angle of the steering wheel. However, when it is likely to deviate from the set navigation route, the driver is alerted. May be.

The operation of the driving support device 1 will be described with reference to the flowchart of FIG.
In the flowchart of FIG. 6, the operations from step S61 to step S65 and step S68 are the same as steps S41 to S45 and step S47 in the flowchart of FIG. 4, so description of these steps is omitted.

  The driving support device 1 determines whether or not the rotation angle of the handle detected by the current position detection unit 36 has changed (step S65), and determines that the rotation angle of the handle has not changed (step S65: No), it returns to step S61.

  On the other hand, when the driving assistance device 1 determines that the rotation angle of the handle has changed (step S65: Yes), it determines whether or not the rotation direction of the handle matches the direction of the navigation instruction (step S66).

  If the driving support device 1 determines that the direction of rotation of the steering wheel does not coincide with the direction of navigation instruction (step S66: No), the driving assistance device 1 is likely to deviate from the route. Is displayed (step S67), and the process proceeds to step S68.

  For example, as illustrated in FIG. 7, the driving assistance device 1 displays a warning icon AT71 on the display unit 33 and displays a message MG71 such as “★ Caution ★ Rotating in a direction different from navigation”. Let

  In other words, unlike the conventional car navigation system, when the vehicle has completed its rotation, a warning of a departure from the route is not issued, but when the driver slightly operates the steering wheel, the direction is different from the navigation instruction. Since the alert is given when the steering wheel operation is performed, the driver can recognize that the steering operation direction is wrong in the initial stage of the direction changing operation.

  As described above, according to the first modification, the current position detection unit 36 directly detects the rotation direction of the handle and displays a warning when it does not match the direction of the navigation instruction. Since the driver notices an error in the steering wheel operation even when it is rotated even a little, the driver can prevent the deviation of the route by immediately correcting the steering wheel operation.

(Modification 2)
[3-2. Judgment of handle operation]
In the first modification, the direction of rotation of the steering wheel is directly detected and a warning is displayed when the steering direction does not coincide with the direction of navigation instruction. However, based on the detected steering wheel rotation angle, It may be determined whether the rotation amount is excessive or insufficient.

The operation of the driving support device 1 will be described with reference to the flowchart of FIG.
In the flowchart of FIG. 6, steps S61 to S68 have already been described in the first modification and the like, and thus description of these steps is omitted.

  If the driving support device 1 determines that the rotation direction of the steering wheel matches the direction of the navigation instruction (step S66: Yes), is the rotation amount of the steering wheel excessive or insufficient based on the detected rotation angle? Is determined (step S69).

  For example, the driving support device 1 can detect the necessary rotation angle by detecting the direction in which the vehicle travels with the current position detection unit 36, and therefore the amount of rotation of the handle based on the rotation angle obtained by the current handle operation. It can be determined whether is excessive or insufficient.

  If the driving support device 1 determines that the operation handle is not excessive or insufficient based on the detected rotation angle (step S69: No), the process proceeds to step S68, and the amount of rotation of the handle based on the detected rotation angle. Is determined to be excessive or insufficient (step S69: Yes), the determination result message is displayed on the display unit 33 (step S70), and the process proceeds to step S68.

  For example, as illustrated in FIG. 8, the driving assistance device 1 displays an icon AT81 indicating the rotation direction on the display unit 33 and a message MG81 such as “★ Caution ★ Rotation is insufficient”. Further, an icon AT82 indicating a rotation target is displayed as necessary, and a message MG82 such as “Please rotate to this angle” is displayed.

  That is, the driver can recognize whether the amount of rotation of the steering wheel is excessive or insufficient in the middle of the steering wheel operation, so that the steering wheel operation can be corrected. Further, by displaying the icon AT82 indicating the rotation target, the steering wheel operation can be easily corrected even for a beginner in driving.

  As described above, according to the second modification, the driving support device 1 determines whether the steering operation is excessive or insufficient based on the azimuth and angle of the vehicle detected by the current position detection unit 36, and determines the determination result. By displaying on the display unit 33, the driver can correct the steering operation in the middle of the steering wheel operation.

(Modification 3)
[3-3. Centralized management of operation buttons]
In the description of the embodiment, the image information is rotated and a warning message is displayed. However, operations for functions that can be used in an automobile, for example, door mirror adjustment operation, seat position adjustment operation, seat angle Operation buttons such as an adjustment operation, a horn operation, and an audio volume operation may be displayed on the display unit 33 of the driving support device 1 so that the operation buttons can be operated from the operation unit 32 for centralized management.

  As shown in FIG. 9, the driving support device 1 displays a plurality of operation buttons BT91 to BT96 that can be operated from the operation unit 32 on the display unit 33 and controls the communication unit 37 to perform Bluetooth (registration). Controls the ECU by communicating with the ECU via short-range wireless communication such as a trademark, and operates various operation functions of the vehicle by operating the operation buttons BT91 to BT96 with the operation unit 32. To.

  For example, by operating the operation button BT96 by the operation unit 32, an in-vehicle audio operation (for example, selection of music or program, volume adjustment, etc.) can be performed. Further, for example, by operating the operation button BT93 by the operation unit 32, setting of the vehicle (for example, door mirror adjustment operation, seat position adjustment operation, seat angle adjustment operation, etc.) can be performed.

  That is, it is necessary by concentrating the operation buttons required by the driver on the display unit 33 of the driving support device 1 and enabling various functions of the automobile by operating the operation buttons by the operation unit 32. Since the operation buttons are concentrated on the handle portion, the operability is improved, and a side look or the like is not generated for the operation.

  As described above, according to the third modification, the operability is improved by concentrating the operation buttons required by the driver on the display unit 33 of the driving support device 1. Moreover, a side look etc. do not arise for operation.

  In the description of the embodiment and the like, the warning to the driver is displayed on the display screen of the display unit 33 when it is likely to deviate from the set navigation route, but the voice output unit 34 A voice alert may be output.

  In addition, an image of a driver's face being photographed is captured by a photographing unit (not shown) included in the driving support device 1, and the photographed driver's face image is analyzed to detect whether the driver is falling asleep. May be. For example, when a driver's drowsiness is detected, an audio warning may be output from the audio output unit 34.

  As a method for analyzing the photographed driver's face image, for example, a known analysis method such as analysis of eye movement, analysis of the number of times the eyelid blinks, analysis of the time when the eyelid is closed, or the like may be used. it can.

  In the description of the modified example 3, the operation buttons required by the driver are concentrated on the display unit 33 of the driving support device 1, but the driver's personal information stored in advance in the storage unit 35. The door mirror position and the like may be automatically adjusted based on the above.

  That is, for example, the sound volume suitable for the driver, the door mirror position, the seat position, the seat angle, or the like is stored in the storage unit 35 in advance.

  Then, when the mobile terminal 101 is mounted on the mounting unit 102, the driving support device 1 controls the communication unit 37 to communicate with the ECU via short-range wireless communication such as Bluetooth and the like. Based on the personal information, one of the volume, the door mirror position, the seat position, the seat angle, or a combination thereof is automatically adjusted.

  In particular, even if it is not a car that you own, such as a rental car or car sharing, just attach the mobile terminal 101 to the handle mounting part 102, based on personal information, volume, mirror position, seat Since either the position or the seat angle or a combination thereof is automatically adjusted, convenience is improved.

DESCRIPTION OF SYMBOLS 1,100 Driving assistance apparatus 10 Navi server apparatus 30, 101 Terminal apparatus 11, 31 Control part (control means)
12, 32 Operation part (operation means)
13, 33 Display section (display means)
14, 35 Storage unit 15, 37 Communication unit (communication means)
34 voice output unit 36 current position detection unit (rotation information acquisition means, current position acquisition means, direction acquisition means)
102 Mounting part HD11 Handle MP51 Image information AT71, AT81, AT82 Icon MG71, MG81, MG82 Message BT91, BT92, BT93, BT94, BT95, BT96 Operation buttons

Claims (7)

Rotation information acquisition means for acquiring rotation information about the rotation direction and rotation angle of the mobile terminal attached to the handle of the automobile;
Current position acquisition means for acquiring a current position of the mobile terminal;
Control means for causing the display means to display image information corresponding to the current position, corresponding to the rotation information;
A driving support apparatus comprising:   2. The driving according to claim 1, wherein the control unit displays a warning image on the display unit when the rotation direction of the acquired rotation information is determined to be different from a navigation instruction. Support device.   The driving support apparatus according to claim 1, wherein the control unit causes the user to notify the alert information when the rotation direction is determined to be a direction different from the navigation instruction. Comprising azimuth obtaining means for obtaining the azimuth in which the automobile travels,
The control means determines whether the amount of rotation of the steering wheel is excessive or insufficient based on the direction of the vehicle acquired by the direction acquisition means and the rotation angle of the acquired rotation information, and notifies the user of the determination result. The driving support apparatus according to any one of claims 1 to 3, wherein   The driving support device according to any one of claims 1 to 4, wherein the image information is map information or landscape information. A driving support method for driving a user using a computer,
Obtaining rotation information relating to the rotation direction and rotation angle of the mobile terminal attached to the handle of the automobile;
Obtaining a current position of the mobile terminal;
Changing the image information corresponding to the current position according to the rotation information and causing the display unit to display the image information;
A driving support method comprising: Computer
Rotation information acquisition means for acquiring rotation information about the rotation direction and rotation angle of the mobile terminal attached to the handle of the automobile;
Current position acquisition means for acquiring a current position of the mobile terminal;
Control means for causing the display means to display image information corresponding to the current position, corresponding to the rotation information;
Program to function as.

Images