JP2009087148A - In-vehicle display device - Google Patents

Abstract

[PROBLEMS] To provide an in-vehicle display device capable of enlightening driving prohibition when a driver is in a predetermined physiological state such as a drunk state, while being able to drive with alerting even in the event of driving. To do.
When a driver state determination unit (2a) determines that a driver is in a predetermined state based on the driver's physiological information including a drinking state acquired by a physiological information acquisition unit (1), the display method is changed. The display method of the display unit 3 of the own vehicle is changed by the means 2b to enlighten the driving prohibition, while at the same time, even when driving, the driver is alerted and driven.
[Selection] Figure 1

Description

  The present invention relates to an in-vehicle display device.

In recent years, an interlock device has been developed that prohibits the start of the engine and prevents accidents when the driver determines whether or not he / she drinks and detects drinking (see, for example, Patent Document 1).
JP-A-6-50918

  However, in the case of the one described in the above publication, if the interlock device does not operate, it becomes a drunk driving, and it is inappropriate to control in an unavoidable situation such as an emergency evacuation. It becomes.

  The present invention has been made to solve such a problem, and when the driver is in a predetermined (inappropriate) physiological state, including a drinking state, while driving can be enlightened, An object of the present invention is to provide an in-vehicle display device that can be operated with alerting even in the case of one driving.

  An in-vehicle display device according to the present invention includes a physiological information acquisition unit that acquires a driver's physiological information, and a driving that determines whether or not the driver is in a predetermined state based on the physiological information acquired by the physiological information acquisition unit. And a display method changing means for changing the display method of the display unit of the host vehicle when the driver state determining means determines that the driver is in a predetermined state. Yes.

  According to such a vehicle-mounted display device, when it is determined by the driver state determination unit that the driver is in a predetermined state based on the driver's physiological information including the drinking state acquired by the physiological information acquisition unit. Because the display method of the display part of the host vehicle is changed by the display method changing means, when the driver is in a predetermined state such as a drunk state, driving prohibition can be enlightened while driving Even if you do, you can be alerted and drive.

  Here, specific examples of the display method changing means that preferably exhibits the above-described operation include a configuration in which display relating to predetermined information is not performed, or display relating to predetermined information is displayed by changing luminance. By not performing display related to the predetermined information in this way, it is possible to enlighten driving prohibition, but even in the event of driving, there is no extra display and it is possible to concentrate on driving while alerting. In addition, by displaying the display related to the predetermined information by changing the brightness, it is difficult to see the display and the driving prohibition can be further enlightened. On the other hand, even when driving, the driver can be alerted and driven.

  Further, as the predetermined information that preferably exhibits the above-described action, specifically, information related to a function that requires a driver's operation can be given.

  Furthermore, as a display method changing means that preferably exhibits the above-described operation, specifically, a configuration in which the display on the display unit is blinked and displayed is exemplified. In addition, by blinking the display on the display unit in this way, it is possible to make the driving operation cumbersome and further enlighten the driving prohibition, while it is possible to drive with an alert even in the event of driving.

  As described above, according to the vehicle-mounted display device according to the present invention, when the driver is in a predetermined physiological state including the drinking state, the driving prohibition can be enlightened. be able to.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a preferred embodiment of an in-vehicle display device according to the invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram showing a vehicle-mounted display device according to an embodiment of the present invention, FIG. 2 is a flowchart showing the operation of a vehicle equipped with the vehicle-mounted display device of FIG. 1, and FIG. 3 is a display in FIG. It is a figure which shows a part concretely.

  As shown in FIG. 1, the in-vehicle display device 100 of the present embodiment receives and displays a drinking detection device (physiological information acquisition means) 1, a display unit 3 that performs various displays, and information from the drinking detection device 1. And a control ECU 2 that controls the unit 3.

  The drinking detection apparatus 1 detects (acquires) the driver's drinking information (physiological information), and here, a device that detects the alcohol concentration from the driver's breath is employed.

  As shown in FIG. 3, the display unit 3 includes a meter 3 a such as a speedometer and a tachometer, a multi-display 3 b, various indicators 3 c, a head-up display (HUD) 3 d projected on the windshield 4, and the like.

  Returning to FIG. 1, the control ECU 2 is a computer of an automobile device to be electronically controlled, and includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), an input / output interface, and the like. In the embodiment, the functions of the driver state determination means 2a and the display method change means 2b are provided.

  The driver state determination means 2a has a function of determining whether or not the driver is in a drinking state based on the drinking information detected by the drinking detection device 1. And whether it is in a drinking state is performed by comparison with the alcohol concentration set beforehand.

  The display method changing unit 2b has a function of changing the display method of the display unit 3 described above to a normal display when the driver state determining unit 2a determines that the driver is in a drinking state. (Details will be described later).

  Next, the operation of the vehicle including the in-vehicle display device 100 having such a configuration will be described with reference to the flowchart shown in FIG.

  As shown in FIG. 2, when the process is started, first, in step 201 (S201), a vehicle activation process is executed, and then in step 202, the drinking detection device 1 detects the driver's drinking information and It is determined whether or not the person is in a drinking state based on the information. If it is determined that the person is in a drinking state, in step 203, the display unit 3 is controlled to turn off the function display and do not display the predetermined information. Then, in step 204, the traveling process is performed with the display turned off in this way, and the process returns to the main process. The predetermined information here is information related to a function that requires an operation by the driver.

  On the other hand, if it is determined in step 202 that the person is not in a drinking state, the process skips to step 204, and in step 204, a running process with a normal display is performed, and the process returns to the main process.

  Thus, in this embodiment, when the driver state determination unit 2a determines that the driver is in a drinking state based on the drinking information detected by the drinking detection device 1, the display method changing unit 2b displays the display unit. Because the display method of 3 is changed, driving prohibition can be enlightened, but even in the event of driving (even in case of emergency evacuation or other situations where driving is unavoidable), it can be alerted and driven .

  In particular, in this embodiment, since the function display is turned off to change the display method, it is possible to enlighten the driving prohibition, but in the event of driving, there is no extra display and alerts the driver while driving. Can concentrate.

  Here, the display method changing means 2b changes the brightness of the display unit 3 by, for example, white-out, etc., and makes it difficult to see the display and further enlighten the driving prohibition. However, you may make it drive with alerting. If the brightness is higher during whiteout, discomfort (unpleasant glare) is further enhanced by glare from the light source, and driving prohibition can be further enlightened.

  In addition, the display unit 3 is changed to a blinking display such as alternating whiteout and blackout to blink, etc., while making the driving operation troublesome and further enlightening driving prohibition, You may make it drive. Note that, as described above, if the luminance is higher, discomfort is further enhanced and driving prohibition can be further enlightened. Incidentally, the alternating blinking condition is preferably set to 0 to 10 Hz, which is a frequency band that is likely to remain as visual consciousness and is a region that has little influence on epilepsy symptoms.

  As described above, the present invention has been specifically described based on the embodiment. However, the present invention is not limited to the above embodiment. For example, in the above embodiment, a physiological information acquisition unit is described as being particularly suitable. When the driver's drinking is detected by the drinking detection device 1 as the drinking detection device 1, the display method of the display unit 3 is changed by the display method changing means 2b. The physiological information of the driver is acquired by the other physiological information acquisition means as the information acquisition means, and whether or not the driver is in a predetermined (unsuitable) state by the driver state determination means 2a based on this physiological information. If it is determined that the driver is in a predetermined state, the display method of the display unit 3 may be changed by the display method changing means 2b.

It is a block block diagram which shows the vehicle-mounted display apparatus which concerns on embodiment of this invention. It is a flowchart which shows operation | movement of the vehicle provided with the vehicle-mounted display apparatus of FIG. It is a figure which shows the display part in FIG. 1 concretely.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Drinking detection apparatus (physiological information acquisition means), 2 ... Control ECU, 2a ... Driver state determination means, 2b ... Display method change means, 3 ... Display part, 100 ... In-vehicle display apparatus.

Claims (4)

Physiological information acquisition means for acquiring the physiological information of the driver;
Driver state determination means for determining whether or not the driver is in a predetermined state based on the physiological information acquired by the physiological information acquisition means;
In-vehicle display, comprising: display method changing means for changing the display method of the display unit of the host vehicle when the driver state determining means determines that the driver is in the predetermined state. apparatus.   The in-vehicle display device according to claim 1, wherein the display method changing unit does not display the predetermined information or displays the predetermined information by changing the luminance.   The in-vehicle display device according to claim 2, wherein the predetermined information is information related to a function that requires an operation of the driver.   The in-vehicle display device according to claim 1, wherein the display method changing unit causes the display of the display unit to blink.

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