JP5666066B2 - Car navigation system - Google Patents

Description

  The present invention relates to an in-vehicle navigation device that is safe for a driver.

  In general, when operating an in-vehicle navigation device, a position that can be operated from either the driver's seat or the passenger seat, for example, using an input device such as a multifunction switch or a remote control installed in the center console, An input operation is being performed. For safety reasons, these input operations are set so that no input is accepted during traveling.

  However, if it is set not to accept input while driving, it will not be possible to perform input operations unless the passenger is in a limited state, even though the passenger is on board, For example, in Patent Document 1, when the movable navigation device is at the position A near the driver's seat, the key input during traveling is invalidated and the position near the passenger seat is disclosed. In the case of B, an in-vehicle navigation device capable of key input from the passenger seat is disclosed.

  However, since the remote control can be operated from anywhere, even if the navigation device is at the position B near the passenger seat, if the driver uses the infrared remote control, There was a problem that there was a risk in the problem.

  To deal with such a problem, for example, in Patent Document 2, when the transmission position of the operated remote controller is calculated from the distance and direction during traveling, and it is determined that the transmission position is the driver's seat, the driver Switch to mode (operation restriction mode) to disable the operation, and if it is determined that the calling position is other than the driver's seat, switch to passenger mode (partial restriction mode) to restrict volume and screen brightness adjustments An in-vehicle navigation device is disclosed.

JP 2001-174268 A JP 2006-335237 A

  However, in a conventional in-vehicle navigation device such as Patent Document 2, there is a portion lacking in certainty in the method for determining the position and state of the operator and the operator, and depending on the determination, an operation by the passenger is impossible. Therefore, there is a problem that there is a possibility of causing a problem in terms of convenience.

  The present invention has been made to solve the above-described problems, and reliably determines the position and posture of an operator who has performed a remote control operation without requiring complicated operations or initial settings, thereby restricting operation. An object is to provide an in-vehicle navigation device that automatically changes the range.

  To achieve the above object, according to the present invention, in an in-vehicle navigation device having a navigation function unit and a display unit, whether or not an infrared remote control is operated inside a vehicle, and a remote control operation position of the infrared remote control are determined. A remote control operation input determination unit for determining; an operation position determination unit for determining an operation position of the infrared remote control based on an image from a camera when the remote control operation input determination unit determines that an infrared remote control is operated; and the vehicle When it is determined that the infrared remote controller is operated by the seating state determination unit for determining the seating state of each seat and the remote control operation input determination unit by the back seat sensor and the seating surface sensor mounted on each seat inside Remote control operation position determined by the remote control operation input determination unit, and the operation position. Based on the operation position of the infrared remote controller determined by the determination unit and the seating state of each seat determined by the seating state determination unit, whether or not the operator of the infrared remote controller is a driver is combined. When it is determined that the operator of the infrared remote controller is a driver, the navigation function unit is instructed to restrict the operation, and the display unit is limited to the operation. And an operation restriction control unit for instructing to display the message.

  According to the vehicle-mounted navigation device of the present invention, it is possible to reliably determine the use position and posture of the operator who has performed the remote control operation, and automatically change the operation restriction range based on that, so that it is possible to The safety can be further improved, and the navigation operation during traveling from the passenger in the front passenger seat and the passenger in the rear seat can be performed to improve convenience.

1 is a block diagram illustrating a configuration of an in-vehicle navigation device according to Embodiment 1. FIG. It is an upper surface schematic diagram in a vehicle which shows the positional relationship of three types of wireless remote control in a vehicle. It is a side surface schematic diagram in a vehicle which shows the positional relationship of the back seat sensor and seat surface seat sensor which were installed in the vehicle of each seat in the vehicle. 3 is a flowchart showing processing of the in-vehicle navigation device according to the first embodiment. It is a figure showing the example of a display of a navigation screen.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Embodiment 1 FIG.
1 is a block diagram showing a configuration of an in-vehicle navigation device according to Embodiment 1 of the present invention. This in-vehicle navigation device includes a remote control operation input determination unit 1, a seating state determination unit 2, an operation position determination unit 3, a seat belt determination unit 4, a vehicle speed acquisition unit 5, an H / W operation input unit 6, and an operation restriction control unit 7. The navigation function unit 8 and the display unit 9 are provided. In recent years, an in-vehicle device in which a navigation device and an audio device (including a disc playback device, a radio tuner, etc.) are integrally formed is common, but the illustration and description of the configuration of the audio device are omitted here.

FIG. 2 is a schematic top view of the interior showing the positional relationship of the three types of wireless remote controllers (101 to 103) in the interior of the vehicle.
The three types of wireless remote controllers (101 to 103) are an infrared remote controller 101, a steering remote controller 102, and an armrest remote controller 103. It is assumed that there are these three types of remote controllers in the vehicle.

Although the infrared remote controller 101 is a movable remote controller, it is often placed between the driver's seat and the passenger seat as shown in FIG. 2, but the operation can be performed from any seat.
The infrared sensor 11 detects from which position the infrared remote controller 101 is operated.
2 receives the operation signal from the infrared remote controller 101. The infrared remote controller operation signal receiver 14 shown in FIG.

The steering remote controller 102 is installed on a driving handle and accepts only an operation that does not affect safety even if the driver performs an operation while traveling, such as raising or lowering the volume while traveling.
The armrest remote controller 103 is a remote controller for the rear seat, and is used by a passenger in the rear seat to operate.

  It should be noted that the steering remote controller 102 in the handle portion and the armrest remote controller 103 in the armrest portion of the rear seat are input to the navigation device by a vehicle CAN (Controller Area Network) signal, a vehicle harness signal, or the like.

  The remote control operation input determination unit 1 indicates which of the three types of wireless remote controllers 101 to 103 is operated by signals from the infrared sensor 11, the steering remote controller 102, and the armrest remote controller 103 inside the vehicle. An operation position determination unit, which will be described later, performs determination (determination as to whether or not the infrared remote controller 101 has been operated) and remote control operation position determination from which position the infrared remote controller 101 has been operated when the infrared remote controller 101 is operated. 3 and the operation restriction control unit 7. In addition, the remote control operation input determination unit 1 uses a signal from the infrared remote control operation signal light receiving unit 14, the steering remote control 102, and the armrest remote control 103 to input an input signal (operation signal) from the operated remote control, which will be described later. Transmit to unit 8.

  Here, by arranging the infrared sensor 11 and the infrared remote control operation signal light receiving unit 14 as shown in FIG. 2, the accuracy of remote control operation position determination when the infrared remote control 101 is operated is improved. This is because, when the operation is performed from the infrared remote controller 101, if the infrared remote control operation signal light receiving unit 14 can receive the operation signal, the infrared sensor 11 disposed in the immediate vicinity of the position ( This is because it is possible to detect detailed information on whether the operation is performed from an angle (including an angle).

  The seating state determination unit 2 includes a rear seat sensor 21 (21-1 to 4) mounted on the back surface (inside the back surface) of each seat in the vehicle, and the seat surface (inside the seat surface) of each seat. The seating position as to which seat the occupant is seated in, and the posture of the front edge or the back is attached to the backrest (back seat) by the signal from the seat surface sensor 22 (22-1 to 4) mounted on the seat The seating state of each seat, i.e., the posture of the seat, is determined and output to an operation position determination unit 3 and an operation restriction control unit 7 to be described later.

FIG. 3 is a schematic side view of the interior of the vehicle showing the positional relationship between the rear seat sensor and the seat sensor installed in each seat in the vehicle.
Each seat is provided with a rear seat sensor 21 (21-1 to 4) inside the rear seat and a seat sensor 22 (22-1 to 4) inside the seat. FIG. 3 shows a case where there are passengers in the driver seat and the passenger seat, and it is assumed that there are no passengers in the rear seat.

In this case, the back seat sensor 21-1 and the seat surface sensor 22-1, and the back seat sensor 21-2 and the seat surface sensor 22-2 in the passenger seat each detect the presence of a person.
In addition, as the back seat sensor 21 and the seat sensor 22, a pressure sensor that detects a pressure caused by a person sitting or leaning on a backrest, a load sensor that detects a load, or the like may be used.

The operation position determination unit 3 determines the operation position of the infrared remote controller 101 based on the image from the infrared camera 31 when the remote control operation input determination unit 1 determines that the infrared remote control 101 is operated, which will be described later. Output to the operation restriction control unit 7.
As shown in FIGS. 2 and 3, the infrared camera 31 is installed on the upper part of the rear mirror (rear mirror) 30 (upper center of the windshield). Thereby, the whole vehicle interior can be confirmed.

The seat belt determination unit 4 determines which seat belt is worn by a signal from the seat belt sensor 41 of each seat, and outputs the seat belt to the operation restriction control unit 7 described later.
The vehicle speed acquisition unit 5 acquires the speed (vehicle speed) of the vehicle on which the in-vehicle navigation device is mounted, based on a signal from the vehicle speed sensor 51, and outputs it to the operation restriction control unit 7 described later.

  The H / W operation input unit 6 includes H / W switches, buttons, and the like provided in the in-vehicle navigation device. In the example illustrated in FIG. 2, the H / W operation input unit 6 is provided in the in-vehicle navigation device body. It arrange | positions around the display part 9 mentioned later. Moreover, it is good also as what is comprised with the touchscreen integrally formed with the display part 9. FIG.

  The operation restriction control unit 7 includes information about which remote controller has been operated from which position determined by the remote control operation input determination unit 1, the seating position and the seating state determined by the seating state determination unit 2, and the operation position determination. By complexly determining the operation position based on the camera image determined by the unit 3, when the infrared remote controller 101 is operated, it is accurately determined by which occupant the seat is operated. In addition, it is determined whether or not the vehicle is traveling based on the vehicle speed acquired by the vehicle speed acquisition unit 5, and when the vehicle is traveling, based on the determination of which seat occupant has operated the infrared remote controller 101. An operation restriction instruction is given to a navigation function unit 8 to be described later.

When the vehicle speed acquired by the vehicle speed acquisition unit 5 is equal to or lower than a predetermined speed, it is determined that the vehicle is not traveling and an instruction not to perform operation restriction is output to the navigation function unit 8.
In addition, even when an operation from the H / W operation input unit 6 is received, an instruction is given to the navigation function unit 8 that the operation is restricted if the vehicle is running and the operation is not restricted unless the vehicle is running. To do.

  The navigation function unit 8 includes a map data processing unit, a current position acquisition unit, and a drawing / display control unit. The navigation function unit 8 acquires map information and current position information from the map data processing unit and the current position acquisition unit, respectively. This implements the original navigation functions such as location search, destination guidance (route guidance), and current position display. However, since this is a known technique, illustration and description thereof are omitted here.

  The navigation function unit 8 according to the first embodiment receives an input or instruction from the operator and performs a route guidance to the destination in addition to the operation restriction control unit 7. In response to this instruction, information such as map information and route guidance is provided via the display unit 9 described later in a state in which operation is restricted for a predetermined function during traveling.

The display unit 9 displays information such as map data and route guidance according to an instruction from the navigation function unit 8, and cannot be operated when an operation restriction is applied according to an instruction from the operation restriction control unit 7. A display screen is displayed or a message indicating that the operation is restricted is displayed with characters.
In addition, this display part 9 shall be provided in the vehicle-mounted navigation apparatus main body, and shall be installed in the general position of the center console center part.

FIG. 4 is a flowchart showing processing of the in-vehicle navigation device according to the first embodiment.
Various sensors (11 to 13, 21, 22, 31, 41, 51, etc.) of the in-vehicle device are in a standby state by releasing the key lock of the vehicle or the door Open. This is to enable immediate activation when the ACC power source / ignition is turned on. Then, when the ignition key is operated to turn on the ACC power / ignition, this in-vehicle navigation device is activated. In the flowchart of FIG. 4, the start of the vehicle-mounted navigation device will be described.

  First, the seating state determination unit 2 determines the presence of an operator based on signals from the seating surface sensor 22-1 to 4, that is, presence / absence of seating (step ST1). When it is determined that there is seating (in the case of YES in step ST1), the seat belt determination unit 4 determines whether or not the seat belt of the seat determined to be seated is worn (step ST2). If it is determined that the seat belt is not worn (NO in step ST2), a warning message is displayed (step ST3), and the process returns to step ST1.

  On the other hand, when it is determined that the seat belt is worn (in the case of YES in step ST2), the operation restriction control unit 7 determines whether or not the vehicle speed acquired by the vehicle speed acquisition unit 5 is faster than a predetermined speed. Determine (step ST4). Here, the predetermined speed is a reference speed that is defined in advance as a navigation operation restriction (traveling operation restriction) when the speed is faster than that, and there are slight differences depending on the car manufacturer. Here, it is 10 km / h.

When the vehicle speed is 10 km / h (predetermined speed) or less (NO in step ST4), it is determined that the vehicle is stopped, and no operation restriction is set (step ST5). Then, the process is terminated, and a normal navigation operation process is performed.
On the other hand, when the vehicle speed is higher than 10 km / h (predetermined speed) (in the case of YES in step ST4), it is determined whether or not the performed operation is an H / W operation by the H / W operation input unit 6. (Step ST6).

  If it is not an H / W operation (NO in step ST6), it is further determined whether or not the performed operation is an operation of the infrared remote controller 101 (step ST7). This determination is made by the remote control operation input determination unit 1 based on signals from the infrared remote control operation signal light receiving unit 14, the steering remote control 102, and the armrest remote control 103. If it is not an operation of the infrared remote controller 101 (NO in step ST7), since it is an operation of the steering remote controller 102 or the armrest remote controller 103, no operation restriction is set (step ST5). The process ends and normal navigation operation processing is performed.

  On the other hand, when it is determined that the operation is the operation of the infrared remote controller 101 (in the case of YES in step ST7), an operation sheet position determination is performed as to which seat position the remote control operation is performed from (step ST7). Step ST8). Specifically, from which seat the remote control operation is based on the detection result by the infrared sensor 11, the detection result by the back seat sensor 21 and the seat sensor 22 of each seat, and the image of the infrared camera 31. (In this embodiment, as shown in FIG. 3, the case where there are passengers only in the driver's seat and the passenger seat is described as an example, so whether the operation is from the driver seat or the passenger seat. ).

  The operation sheet position determination is classified into the following three cases. (1) In each seat, if the rear seat sensor 21 and the seat sensor 22 are in the ON state, it is determined that the user is seated, the remote control operation position detected by the infrared sensor 11 is also the seat, and the infrared camera 31 also confirms whether or not there is a person in the seat. (2) In each seat, if only the seat surface sensor 22 is in the ON state, it is determined that the user is seated but is turned forward. Then, it is confirmed that the remote control operation position detected by the infrared sensor 11 is not the seat, and whether or not a person is present in the seat and is turned forward by the image of the infrared camera 31, (3) In each seat, if the seat sensor is OFF, it is determined that there is no seating (absence), and the remote control operation position detected by the infrared sensor 11 is the position. It is not in the seat, and, also to make sure that there are no people in the seat by the image of the infrared camera 31.

  The driver seat back sensor 21-1 and the seat sensor 22-1 determine whether the driver seat is present, and the remote control operation position detected by the infrared sensor 11 is also the driver seat. When it is determined from the image of the camera 31 that the infrared remote controller 101 is operated from the driver's seat, that is, when it is determined that the operation is from the driver's seat (in the case of YES in step ST9), the operation is restricted. The navigation function unit 8 is instructed (step ST10), and the display unit 9 is instructed to display characters such as “cannot be operated” so that the user can recognize that the operation is restricted (step ST10). Step ST11).

  FIG. 5 is a diagram showing a display example of the navigation screen. FIG. 5A is a navigation screen displayed during traveling, and FIG. 5B is during traveling (when vehicle speed> 10 km / h). In addition, when an attempt is made to operate the screen displayed in FIG. 5A from the driver's seat (in the case of YES in step ST9), a display in which characters indicating that the operation is restricted is displayed to the user The screen is shown.

  On the other hand, in step ST8, even if both the back seat sensor 21-1 and the seat seat sensor 22-1 of the driver seat are in the ON state, the remote control operation position detected by the infrared sensor 11 is not the driver seat. If it is determined from the image of the infrared camera 31 that it is not an infrared remote control operation from the driver's seat, that is, the rear seat sensor 21-2 and the seat seat sensor 22-2 of the passenger seat are both in the ON state. When the remote control operation position detected by the infrared sensor 11 is determined to be the front passenger seat or when it is determined from the image of the infrared camera 31 that the infrared remote control operation is performed from the front passenger seat, If it is determined that there is no operation (NO in step ST9), no operation restriction is set (step ST5). As a low chart terminates the process, normal navigation operation processing is performed.

  In this way, the type of the operation source remote controller (101 to 103) is determined, the position and posture of the operator of the infrared remote controller 101 are determined, the remote control operation position determination by the infrared sensor, the back seat sensor and the seat sensor of the seat seat, Since it is determined and determined in combination based on the seating state determination by the camera and the operation position determination by the infrared camera, it is possible to more accurately and reliably recognize from which person the infrared remote control operation is from It becomes possible.

  And based on these judgments, various settings of the navigation function are changed and the operation restriction range is automatically changed, so navigation operations during traveling from passengers in the front passenger seat and passengers in the rear seat are possible. Become. In addition, by combining with the presence / absence of seat belts and vehicle speed, the vehicle state determination accuracy, such as whether it is ready to start running or is already running, is further improved. Can be made. In particular, with respect to remote control operation, it is possible to further improve safety during traveling by limiting infrared remote control operation from the driver's seat.

  In addition, as an operator, not only the driver, but also passengers in the passenger seat and the rear seat are determined, so that appropriate driving operation restriction setting is performed in order to increase safety during driving. By making it possible for passengers to perform operations of functions that cannot be operated (for example, audio operations), it is possible to improve the operational convenience of the in-vehicle navigation device having a composite function such as an audio function.

  In addition, navigation operations from the driver's seat while driving should of course be set with operational restrictions from the standpoint of safety, but other passengers' operations can be operated safely. In addition, there is an effect that it is possible to create a better in-vehicle environment by eliminating the stress that the operation is impossible.

  In the first embodiment, the vehicle-mounted navigation device is described as an in-vehicle device in which an audio device is integrally formed. However, the present invention is not limited to the audio / navigation integrated device, and the navigation device is integrally formed with video equipment. Even if it is an apparatus, the same effect is acquired. For example, the same applies to complicated work that is not suitable for driving conditions, such as checking in detail whether there is another route to the destination using the navigation information installed in the in-vehicle navigation device Needless to say, an effect can be obtained.

  Each seat sensor for the seating surface and the back for judging the seating state and the seatbelt sensor for detecting the presence or absence of seatbelt are installed in any of the driver's seat, front passenger seat and rear seat. Although described as an example, the same effect can be obtained in the set seat even if only one or two of them are installed. And, at the time of remote control operation, the operator's position determination can be specified by incorporating this sitting state determination, the type determination of the operation remote control and the remote control operation position determination, and the person determination by the infrared camera, An operation suitable for the seating position can be provided.

  In the above embodiment, the display unit 9 of the navigation device is installed at a general position in the center of the center console, and the same display screen can be seen from the driver seat and the passenger seat. A so-called multi-view screen may be displayed on the display unit 9. Here, the multi-view screen is a single display unit as a whole, but when viewed from the driver's seat side, the driver's seat dedicated screen is visible, and when viewed from the passenger seat side, the passenger's seat dedicated screen is visible.

  When the multi-view screen is employed as described above, when it is determined in step ST9 of the flowchart shown in FIG. 4 that the remote control operation is performed from the driver seat (in the case of YES in step ST9), the driver seat only Although operation restrictions are imposed on the remote control operation on the screen, it is only necessary to set no operation restriction on the passenger seat screen.

  As described above, according to the first embodiment, the operator of the infrared remote controller is specified in combination based on the infrared sensor, the rear seat sensor and seat sensor of each seat, and the images of the infrared camera. By doing so, it is possible to reliably determine the position of the operator who performed the remote control operation, so it is possible to improve safety while traveling, and from passengers and passengers in the rear seat It is possible to improve the convenience by enabling the navigation operation during traveling.

  Furthermore, the operator of the infrared remote controller is combined based not only on the images of the infrared sensor, the back seat sensor of each seat, the seat sensor of the seat, and the infrared camera, but also whether the seat belt is installed on each seat and the vehicle speed. By specifying, it is possible to further improve the certainty of the vehicle state determination, such as whether the posture is set so that the vehicle can start traveling or whether the vehicle is already traveling.

  In addition, as an operator, not only the driver, but also passengers in the passenger seat and the rear seat are determined, so that appropriate driving operation restriction setting is performed in order to increase safety during driving. By allowing the passengers to operate the functions that cannot be operated, it is possible to improve the operational convenience of the in-vehicle navigation device having a composite function such as an audio function.

  In addition, by using communication means such as ECU (Engine Control Unit) and CAN communication, information on seating determination is sent to vehicle control systems (suspension, steering operation, front beam light distribution control (levelizer)), etc. It can be applied and the convenience of the vehicle can be improved.

  In the present invention, any constituent element of the embodiment can be modified or any constituent element of the embodiment can be omitted within the scope of the invention.

  The vehicle-mounted navigation device of the present invention can be applied to a navigation device formed integrally with an audio device or video equipment.

  DESCRIPTION OF SYMBOLS 1 Remote control operation input determination part, 2 Seating state determination part, 3 Operation position determination part, 4 Seat belt determination part, 5 Vehicle speed acquisition part, 6 H / W operation input part, 7 Operation restriction control part, 8 Navigation function part, 9 Display unit, 11 Infrared sensor, 14 Infrared remote control operation signal receiving unit, 21 (21-1 to 21-4) Rear sheet sensor, 22 (22-1 to 22-4) Seat surface sheet sensor, 31 Infrared camera, 41 ( 41-1 to 41-4) Seat belt sensor, 51 vehicle speed sensor, 101 infrared remote control, 102 steering remote control, 103 armrest remote control.

Claims (3)

In an in-vehicle navigation device having a navigation function unit and a display unit,
A remote control operation input determination unit for determining whether or not the infrared remote control is operated inside the vehicle, and a remote control operation position of the infrared remote control;
An operation position determination unit that determines an operation position of the infrared remote control from an image from a camera when the remote control operation input determination unit determines that the infrared remote control is operated;
A seating state determination unit that determines a seating state of each seat by a back seat sensor and a seat surface sensor mounted on each seat inside the vehicle;
When it is determined by the remote control operation input determination unit that the infrared remote control has been operated, the remote control operation position determined by the remote control operation input determination unit and the operation position of the infrared remote control determined by the operation position determination unit And determining whether the operator of the infrared remote controller is a driver based on the seating state of each seat determined by the seating state determining unit, and the operator of the infrared remote controller is driving If it is determined that the user is a user, the operation restriction control unit instructs the navigation function unit to perform operation restriction and instructs the display unit to display that the operation restriction is applied. An in-vehicle navigation device characterized by comprising: A seat belt determination unit for determining whether or not a seat belt is installed in each seat inside the vehicle;
The operation restriction control unit is
When it is determined by the remote control operation input determination unit that the infrared remote control has been operated, the remote control operation position determined by the remote control operation input determination unit and the operation position of the infrared remote control determined by the operation position determination unit The operator of the infrared remote controller is a driver based on the seating state of each seat determined by the seating state determination unit and the presence / absence of seatbelt wearing of each seat determined by the seatbelt determination unit. The vehicle-mounted navigation device according to claim 1, wherein whether or not there is present is determined in a composite manner. A vehicle speed acquisition unit for acquiring the speed of the vehicle;
The operation restriction control unit is
The remote controller determined by the remote control operation input determination unit when the vehicle speed acquired by the vehicle speed acquisition unit is larger than a predetermined speed and the remote control operation input determination unit determines that the infrared remote control is operated. Based on the operation position, the operation position of the infrared remote controller determined by the operation position determination unit, and the seating state of each seat determined by the seating state determination unit, the operator of the infrared remote controller is a driver The in-vehicle navigation device according to claim 1, wherein whether or not is determined in a complex manner.

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