JPH0566968B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a multi-display device for a vehicle that displays various types of information in a multiplex manner on a display screen provided on an instrument panel of a vehicle.

(Prior art) The instrument panel installed in front of the driver's seat of a vehicle is equipped with meters such as a speedometer, tachometer, water temperature gauge, and fuel gauge, as well as various indicator lamps, warning lamps, etc. In recent years, with the diversification of vehicle equipment and functions, for example, boost gauges that show the supercharging pressure of the supercharger and safety monitors that centrally display the status of each part of the vehicle when starting are sometimes installed. As described above, there is a tendency for the number of display devices that display various types of information to increase.
In that case, if these indicators are individually arranged on the instrument panel, the area in which they are arranged becomes unnecessarily wide, and the visibility of these indicators is reduced.

To solve this problem, it is conceivable to display a plurality of pieces of information in a multiplexed manner on a screen in a fixed display area, as shown in, for example, Japanese Patent Application Laid-Open No. 57-151446. If this multiple display system is adopted, one display screen can be used to display, for example, a safety monitor display that shows the status of each part of the vehicle when the vehicle is started, and a meter display that indicates the vehicle speed, engine rotation speed, etc. when the vehicle is running. When an abnormality occurs, it is possible to selectively display necessary information in a fixed display area according to each state of the vehicle or according to the driver's request, such as displaying a warning display indicating the abnormality.
The visibility of various displays will be improved. However, if various types of information are switched and displayed on the screen in this way, and the display can be switched by the driver's operation, for example, the meter display may change due to an incorrect operation while driving. There is a possibility that information such as vehicle speed necessary for driving will no longer be displayed when the display switches from the displayed state to the safety monitor display, and in such a case, driving of the vehicle will be hindered.

(Object of the Invention) The present invention addresses the above-mentioned problems in a multiple display device for a vehicle that displays various types of information multiplexed on a single display screen. The system is designed to ensure that information necessary for driving, such as vehicle speed, is always displayed even if a person mistakenly switches the display, thereby preventing a situation where this type of information is no longer displayed while driving. purpose.

(Structure of the Invention) A multiple display device for a vehicle according to the present invention is characterized in that it is configured as follows in order to achieve the above object.

That is, this multiple display device is installed on the instrument panel of a vehicle, and includes a display means that switches and displays various types of information in different combinations for each pattern according to a plurality of preset patterns, and a display means that displays various information in different combinations for each pattern. a display selection means for arbitrarily selecting a pattern to be displayed and switching the display; a running detection means for detecting the running state of the vehicle; and controlling switching of the pattern displayed on the display means based on a signal from the detection means. and display control means. The display control means switches and selects the pattern displayed by the display means to a pattern including information necessary for the vehicle to travel when the output signal of the travel detection means indicates that the vehicle is traveling, and also selects the display selector. It operates to prohibit switching from the pattern to another pattern by the means. Therefore, when the vehicle is running, a pattern that includes information necessary for driving is automatically displayed, and even if the driver accidentally switches the pattern, the pattern will not be switched to a pattern that does not include the above information. This means that the information necessary for driving is always displayed.

(Effects of the Invention) As described above, according to the present invention, in a multiple display device for a vehicle that selectively displays various types of patterned information on a display screen in a fixed display area, when the vehicle is running, Even if the driver makes a mistake in switching patterns, information necessary for driving, such as vehicle speed, engine rotation, water temperature, remaining fuel level, etc., will always be displayed. This prevents problems such as when driving is hindered because these necessary information are not displayed.

(Example) Examples of the present invention will be described below.

As shown in FIG. 1, the multiple display device according to the present embodiment is composed of a display unit 1 installed on the instrument panel in front of the driver's seat of a vehicle, and a control unit 2 installed, for example, in the trunk room. The units 1 and 2 are connected via a transmission path 3 for multiplex transmission of a large number of signals.

The display unit 1 includes a multiplex display section 11 that switches various displays on the screen using a light emitting element and a liquid crystal shutter, a driver 12 that drives the display 11, and signals from the control unit 2. It consists of an interface 13. In addition, the control unit 2
A controller 21 that processes signals input from various sensors and switches, and the controller 2
1, and an interface 22 for outputting the processing results of step 1 to the display unit 1.
The controller 21 is connected to a battery 31, and in this embodiment is provided with an interface 23 for inputting and outputting signals a and a' to and from a control unit 32 of the four-wheel steering system.

In the control unit 21,
State quantities detected by each sensor from the ignition signal b from the ignition switch 33, the remaining fuel level sensor 34, the water temperature sensor 35, the oil pressure sensor 36, the boost pressure sensor 37, the engine rotation sensor 38, and the vehicle speed sensor 39. In addition, a switch 40 detects a lack of brake fluid, a switch 41 detects battery charging failure, a switch 42 detects a lack of oil level, and a switch 42 detects abnormal overheating of the exhaust pipe. a switch 43 for detecting a lack of cooling water, a switch 44 for detecting a lack of cooling water, a switch 45 for detecting a door ajar,
a switch 46 for detecting a break in the table lamp;
a switch 47 for detecting disconnection of the stop lamp;
Warning signals i to r are inputted as necessary from various warning switches such as a switch 48 for detecting that a seat belt is not fastened and a switch 49 for detecting a shortage of washer fluid.

In addition, a plurality of display patterns are set in this control unit 21 for displaying various types of information indicated by the above-mentioned signals a to r in different combinations on the multiplex display section 11 of the display unit 1, and these display patterns First to third selection switches 51 to 53 are connected for manually switching. The above display pattern is centered around the cometometer _A1 indicating the engine speed shown in Figure 2a.
Fuel gauge A ₂ that shows the remaining fuel level, Water temperature gauge A ₃ that shows the water temperature,
The tachometer center pattern A displays a boost gauge A ₄ indicating the boost pressure of the supercharger, and a steering indicator A ₅ indicating the four-wheel steering state, that is, the steering state of each wheel, and the tachometer B ₁ shown in FIG. All-item pattern B that displays digital speed meter B ₂ , fuel gauge B ₃ , water temperature gauge B ₄ , oil pressure gauge B ₅ , voltmeter B ₆ , warning indicator group B ₇ , and boost gauge B ₈ , and the same figure c A check list that displays the normal and abnormal conditions of each part of the vehicle, item by item.
C ₁ , comprehensive evaluation section C ₂ that displays these comprehensive evaluations,
and a pictorial display section _C3 illustrating the abnormal location, and a safety monitor pattern C that displays the abnormal location. If the safety monitor pad C is selected and there is an abnormality in any part, an x mark will be displayed on the corresponding item in the check list _C1 as shown in Figure 2d, and the part will be This is displayed on the picture display section _C3 , and a warning character is displayed on the general display section _C2 . Further, in this embodiment, the multiplex display section 11 can display a diagnosis result display pattern D for each part of the vehicle as shown in FIG. 2e. It is used when inspecting, repairing, etc.

Incidentally, as shown in FIG. 2a, the multiple display section 11 is provided in a certain area within the instrument panel 60, and the instrument panel 60 also has a total odometer E, a trip meter F, and a dedicated display section. Headlamp indicator G, automatic transmission range indicator H,
A driving mode indicator for the same transmission is also provided.

The controller 21 in the control unit 2 operates to select and switch patterns to be displayed on the multiple display section 11 in the display unit 1 in accordance with the operation of the first to third selection switches 51 to 53 and the state of the vehicle. . Next, the operation of this controller 21 will be explained according to the flowchart shown in FIG.

First, the controller 21 determines whether or not the ignition switch 33 is turned on in step _S1 of the flowchart, and if it is not turned on, the controller 21 prohibits the display on the multiplex display section 11 in step _S2 , but if the ignition switch 33 is turned on, it is prohibited. In some cases, the above display section 1 will be displayed in step _S3 .
1, the safety monitor pattern C shown in FIG. 2c is displayed. This allows the driver to check the charging status of the brake system, battery, etc.

Next, the controller 21 reads the engine speed in step _S4 , and when the engine speed is 0, that is, when the engine has not started and 10 seconds have passed since the ignition switch was turned on. While the user is not present and none of the selection switches 51 to 53 are operated, steps _S5 , _S6 to step _S3 are repeatedly executed to continue displaying the safety monitor pattern C. Then, when the engine speed is no longer 0, that is, when the engine is started, or when 10 seconds have passed after the ignition switch 33 is turned on even before the engine starts, the above steps _S4 or S are performed. ₅ to step _S7 are executed to display the previous pattern on the display section 11.
In this case, as this previous pattern, the ignition switch 33 during the previous vehicle operation is
The pattern that was displayed immediately before the OFF operation is displayed.

In this state, the previous pattern is displayed, or before the engine starts and until 10 seconds have passed since the ignition switch 33 was turned on (during this period, _the safety When any one of the first to third selection switches 51 to 53 is operated in the monitor pattern C (monitor pattern C being displayed), steps _S8 or steps _S6 to _S9 are executed. If the operated switch is the first selection switch 51 for selecting the tachometer center pattern A shown in _FIG .
The switch displayed and operated is shown in Figure 2b.
If the second selection switch 52 is for selecting all item pattern B, the steps start from step _S11 .
Execute _S12 to display the all-item pattern B. If the tachometer center pattern A or all-item pattern B is displayed based on the operation of the selection switch 51 or 52 in this way, the controller 21 steps from step _S10 or _S12 to step _S13.
After confirming that the ignition switch 33 is ON in step _S14 , execute step _S7 to set these selected patterns as the previous pattern. Pattern A or B selected in this way
is displayed again, and step _S7 is repeatedly executed from step _S7 through steps _S8 , _S13 , and _S14 , and the pattern A or B is continuously displayed.

On the other hand, if the operated switch is the third selection switch 53 for selecting the safety monitor pattern, step _S15 is executed via steps _S9 and _S11 , and it is determined whether the vehicle speed is 0 or not. . Then, step _S16 is performed only when the vehicle speed is 0, that is, only when the vehicle is stopped.
Then, step _S17 is executed to display the selected safety monitor pattern C. However, if the vehicle speed is not 0, that is, while the vehicle is running, steps _S15 to _S10 are executed, and the tachometer center pattern A is displayed. As a result, even if the third selection switch 53 for selecting safety monitor pattern C is operated while the vehicle is running, switching to pattern C is prohibited, and the engine speed and water temperature necessary for running the vehicle are A tachometer center pattern A including information such as remaining fuel amount will be displayed.

Furthermore, when the vehicle speed is 0, the safety monitor pattern C is selected by operating the third selection switch 53.
10 from the selection operation when is displayed.
If there is no further operation of any of the selection switches 51 to 53 before the second elapses, step _S17 is executed again from step _S17 through steps _S18 , _S19 , and _S20 , and the safety is Monitor pattern C continues to be displayed. However, when the vehicle speed is no longer 0 during that time, that is, when the vehicle starts running, steps _S20 to _S10 are executed, and the display is switched to the tachometer center pattern A. In other words, even if the safety monitor pattern C is displayed when the vehicle is stopped, the display automatically switches to the tachometer-centered pattern A when the vehicle starts traveling, and information necessary for traveling is displayed. Furthermore, if any of the selection switches 51 to 53 is further operated before 10 seconds have elapsed since the safety monitor pattern C selection display, steps _S19 to _S9 and subsequent steps are executed.
The selected pattern is displayed in the same manner as in the above case (however, when safety monitor pattern C is selected, pattern C is displayed only when the vehicle speed is 0). Also, from the selection display of safety monitor pattern C, 10
If seconds have elapsed, step _S18 to step _S14
After that, the previous pattern is displayed in step _S7 . In this case, the previous pattern is the pattern before the selection of the safety monitor pattern C, that is, the tachometer center pattern A or the all-item pattern B.

In addition to the above-mentioned display operations, the controller 21 also performs a diagnostic result display operation when operated by a dealer or the like, and a warning display operation when an abnormality occurs, and these operations will be described next.

First, the diagnostic result display operation is performed by simultaneously operating the first and second selection switches 51 and 52, and at this time, the controller 21 performs the step _S8 described above.
From there, the subprogram shown in FIG. 4 is executed through steps S ₉ , S ₁₁ , S ₁₅ and S ₁₆ . After confirming that the first and second selection switches 51 and 52 are operated at the same time in step _T1 of this subprogram, the diagnostic result display pattern D shown in FIG. _2e is displayed in step T2. do. This pattern D continues to be displayed until the display cancellation operation is performed at step _T4 or a predetermined period of time has elapsed. ₃ , step _S10 of the flowchart shown in FIG. 3 is executed to switch the display to tachometer center pattern A. Therefore, in this case as well, information necessary for running the vehicle is displayed when the vehicle starts running.

Further, the warning display operation is performed by interrupting and executing a subprogram shown in FIG. 5 when a situation to be given a warning occurs. In other words, if it is confirmed in step _U1 of this subprogram that an abnormality such as a lack of brake fluid has occurred, the controller 21 determines whether the currently displayed pattern is safety monitor pattern C in step _U2 . If the pattern C is displayed, a warning is displayed in the check list C ₁ and the pictorial display area C ₃ in the pattern C, and a warning character is displayed in the general display area C _2. Display. Further, if the pattern displayed when an abnormality occurs is a pattern other than safety monitor pattern C, step _U3 is executed to display a warning pattern.
This warning pattern is all item pattern B in Figure 2b.
Warning indicator group B ₇ in
When the all-item pattern B is displayed, the corresponding indicator in this indicator group _B7 is displayed by lighting. Furthermore, if the pattern displayed when an abnormality occurs is the tachometer center pattern A, the above-mentioned warning indicator group B ₇ is displayed instead of the four-wheel steering indicator A ₅ in the pattern A, and the corresponding indicator in this indicator group B ₇ is displayed. lights up.

As described above, various patterns are switched and displayed on the multiple display section 11 provided on the instrument panel 60 in front of the driver's seat.While the vehicle is running, the third switch 53 for selecting the safety monitor pattern C is operated. If the vehicle starts running while the vehicle is stopped and the safety monitor pattern C is displayed, the tachometer center pattern A will be displayed. This ensures that the information necessary for driving is always displayed when the vehicle is running.

The patterns displayed when the vehicle is running are as follows:
Instead of the tachometer center pattern A, the all-item display pattern B may be displayed.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and FIG. 1 is a circuit diagram showing the overall configuration of a multiple display device, and FIG. 2 shows display sections a, b, c, d, and e each showing various display patterns. FIG. 3 is a flowchart showing the display control operation of the controller, and FIGS. 4 and 5 are flowcharts showing the diagnostic result display operation and warning operation of the controller, respectively. 11...Display means (multiple display section), 21...Display control means (controller), 39...Traveling detection means (vehicle speed sensor), 51-53...Display selection means (selection switch), A-C... pattern.

Claims (1)

[Claims] 1. A display means installed on the instrument panel of a vehicle that switches and displays various types of information in different combinations for each pattern according to a plurality of preset patterns, and a display means that arbitrarily selects the pattern to be displayed on the display means. a display selection means for switching the display; a running detection means for detecting the running state of the vehicle; and a signal from the detection means indicating the running of the vehicle. 1. A multi-display device for a vehicle, comprising display control means for switching to a pattern including the above pattern and for inhibiting the display selection means from switching from the pattern to another pattern.