JPH11101811A - Speed display system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a speed display system by which the relationship between a speed state and an average speed inside a definite section is made to agree and which prevents the confusion of a driver by a method wherein the average speed in the speed-progress-state display section of a vehicle is displayed on a speedometer screen. SOLUTION: An interface circuit 8 in a control unit 4 converts a speed signal from the side of a vehicle 3 into speed data, it converts an engine speed signal into engine rotation data, and it converts a display request signal from a remote control device into display request data. In addition, a CPU circuit 9 processes the respective data, it generates present speed data, average speed data and speed-progress-state data, and it generates display data from the respective generated data on the basis of the display request data. An image-signal generation circuit 10 generates a display signal from the display data, and it displays a speedometer screen or the like on a TV monitor device 5. On the speedometer screen, an average speed in a speed-progress-state display section is displayed together with an average speed up to the present, and the relationship between speed progress state and a display average speed inside a definite section agrees.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to the present vehicle speed,
The present invention relates to a speed display system that displays an average speed and the like in an easily understandable display format.

[0002]

2. Description of the Related Art As a speed display system provided in a vehicle such as an automobile, a system shown in FIG. 7 is conventionally known.

The vehicle display system 101 shown in FIG.
An I / O circuit (input / output circuit) 102 which takes in a speed signal output from a speed sensor (not shown) provided on the vehicle side and converts it into speed data, and a driver provided in a driver's seat or the like. A switch circuit 103 for generating display request data according to the content operated by the user, and a microprocessor, etc., and processes speed data output from the I / O circuit 102 to obtain current speed data and average speed data. , Speed progress data, etc.
CPU circuit 104 that generates display data from current speed data, average speed data, speed progress status data, etc., based on display request data output from switch circuit 103
The display data output from the CPU circuit 104 is taken in, and a liquid crystal display 105 with a touch panel function for displaying a speed display screen, a program for defining the operation of the CPU circuit 104, and various constant data are stored. ROM circuit 106 and a RAM circuit 107 used as a work area of the CPU circuit 104 and the like.

Then, while converting the speed signal output from the speed sensor to generate speed data, the speed data is processed to generate current speed data, average speed data, speed progress status data, and the like. Based on the display request data output from the switch circuit 103, display data is generated from current speed data, average speed data, speed progress status data, and the like, and a trip meter screen 108 as shown in FIG. Or a speedometer screen 109 as shown in FIG.

[0005] In this case, the trip meter screen 108
A reset switch 110 operated to return the contents of the screen 108 to zero;
Display section 11 that displays the elapsed time since the trip meter screen 108 was reset, the mileage, etc.
When the reset switch 110 is pressed, the elapsed time displayed on the detailed display unit 111, the value of the traveling distance, and the like are reset to zero, and the elapsed time is sequentially increased with time. At the same time, the value of the travel distance displayed on the detail display unit 111 is incremented each time the vehicle travels a preset distance. Thereby, the elapsed time after operating the reset switch 110 and the traveling distance are notified to the driver or the like.

The speedometer screen 109 has an average speedometer 112 for displaying the average speed up to the present time, and a line graph format showing the speed progress status up to the present while scrolling the entire screen to the left as time passes. A speed progress display section 113 for displaying a screen. The current progress is displayed on the right end of the speed progress display section 113, and the speed progress display section 11 is displayed as time elapses.
Scroll the screen displayed in 3 to the left to display the average speed up to the present on the average speed meter 112,
Inform the driver etc. of the vehicle speed status up to the present.

[0007]

However, the above-mentioned conventional speed display system 101 has the following problems.

First, on the speedometer screen 109 displayed on the liquid crystal display 105, while the speed status within a certain period of time is displayed on the speed progress status display unit 113 due to the limitation of the memory capacity and display area, etc. Average speed meter 112
Since the average speed from the operation of the reset switch 110 to the present is displayed on the top, the average speed of the speed progress status of the portion displayed on the speed progress status display unit 113 and the average speed meter It does not match the content of the average speed displayed on 112.

For this reason, it is difficult for the driver to read the relationship between the content of the speed progress displayed on the speed progress display section 113 and the content of the average speed displayed on the average speed meter 112. There was a problem.

A trip meter screen 108 displayed on the liquid crystal display 105 and a speed meter screen 109
Are independent of each other, the liquid crystal display 105
When the reset switch 110 is operated on the trip meter screen 108 displayed above, the value of the elapsed time displayed on the detailed display unit 111 on the trip meter screen 108 and the value of the mileage are reset to zero. Although the speed can be reset, the content of the speed progress status displayed on the speed progress status display unit 113 on the speedometer screen 109 is not reset. Has to be reset again.

The present invention has been made in view of the above circumstances, and in claim 1, the relationship between the speed condition within a certain period of time displayed on the speed progress display portion of the speedometer screen and the average speed is matched. It is an object of the present invention to provide a speed display system that can prevent a driver or the like from being confused.

According to the present invention, when the reset switch on the trip meter screen is operated, not only the contents of the trip meter screen but also the contents of the speedometer screen corresponding to the trip meter screen are reset. Accordingly, it is an object of the present invention to provide a speed display system which can improve operability, and can eliminate a sense of incongruity at the time of screen switching by using the same reset timing.

[0013]

In order to achieve the above object, according to the present invention, an average speed display unit mounted on a vehicle and displaying an average speed of the vehicle is provided. A display having a speedometer screen including a speed progress display section for displaying, and a speed in this display section when the progress status of the vehicle speed is displayed on the speed status display section on the speedometer screen. It is characterized by comprising means for calculating an average of the progress status, and means for displaying the obtained average speed on the speedometer screen near the speed progress status display section.

According to a second aspect of the present invention, a display mounted on the vehicle and having a plurality of speed display screens related to the speed of the vehicle, and one of the plurality of speed display screens is displayed on the display. When the reset command is input in the state that the speed display screen is displayed, the contents of the displayed speed display screen are reset, and among the remaining speed display screens that are not displayed, the speed display screen corresponding to the reset speed display screen is displayed. Means for resetting the contents.

According to a third aspect, in the speed display system according to the second aspect, the plurality of speed display screens include:
It is a trip meter screen and a speed meter screen, and when the contents of the trip meter screen being displayed are reset, the corresponding contents on the speed meter screen are also reset in conjunction therewith.

In the above construction, when the progress status of the vehicle speed is displayed on the speedometer screen, an average of the speeds of the progress status in the displayed section is obtained, and the average is obtained. By displaying the status in correspondence with the status, the relationship between the speed status within a certain period of time displayed on the speed progress status display section of the speedometer screen and the average speed is matched so that the driver etc. will not be confused. To

According to the present invention, when a reset command is input while any one of the speed display screens is displayed on the display, the contents of the displayed speed display screen are reset. When the reset switch on the trip meter screen is operated by resetting the content of the speed display screen corresponding to the reset speed display screen among the remaining speed display screens that are not displayed,
Not only the contents of the trip meter screen, but also the contents of the speedometer screen corresponding to this trip meter screen are reset, thereby improving operability and eliminating the discomfort when switching screens with the same reset timing. .

[0018]

FIG. 1 is a block diagram showing an embodiment of a speed display system according to the present invention.

A speed display system 1 shown in FIG. 1 is disposed in a driver's seat or the like and operated by a driver or the like, and a battery voltage of "+24 V" supplied from the vehicle 3 side and a voltage of "+24 V". ACC voltage, "0V"
The speed signal output from the speed sensor (not shown) and the engine speed signal output from the speed sensor (not shown) on the vehicle 3 side are taken in using the ground voltage of A control unit that generates data, average speed data, speed progress status data, and the like, and generates a display signal from current speed data, average speed data, speed progress status data, and the like based on a display request signal output from the remote control device 2. And a TV monitor device 5 with a touch panel function for receiving a display signal output from the control unit 4 and displaying a speed display screen and the like. The speed signal output from the speed sensor, Convert the engine speed signal output from the sensor to generate speed data and engine speed data. These speed data and engine speed data are processed to generate current speed data, average speed data, speed progress status data, and the like, and based on a display request signal output from the remote control device 2, the current speed data, A display signal is generated from the average speed data, speed progress status data, and the like, and
3 and a speedometer screen 7 as shown in FIG.

The control unit 4 takes in a speed signal output from a speed sensor provided on the vehicle 3 side, converts it into speed data, and outputs an engine speed output from a speed sensor provided on the vehicle 3 side. An interface circuit 8 which takes in a number signal and converts it into engine speed data, and further takes in a display request signal output from the remote control device 2 and converts it into display request data; The speed data and the engine speed data are processed to generate current speed data, average speed data, speed progress status data, and the like. Based on the display request data output from the interface circuit 8, the current speed data, average speed data, C that generates display data from speed data, speed progress status data, etc. A U-circuit 9, a display signal output from the CPU circuit 9, a display signal for the TV monitor 5, a video signal generation circuit 10 for supplying the display signal to the TV monitor 5, and a CPU circuit 9. A ROM circuit 11 for storing a program defining various operations, various types of constant data, and the like, and a RAM circuit 12 used as a work area for the CPU circuit 9 and the like.

The speed data output from the speed sensor and the engine speed signal output from the speed sensor are converted to generate speed data and engine speed data. Processes several data to generate current speed data, average speed data, speed progress status data, and the like. Based on display request data obtained by converting a display request signal output from the remote control device 2, the current speed A display signal is generated from data, average speed data, speed progress status data, etc.
A trip meter screen 6 as shown in FIG. 2 and a speed meter screen 7 as shown in FIG. 3 are selectively displayed on the V monitor device 5.

In this case, the trip meter screen 6 includes a reset switch 13 operated to return the contents of the screen 6 to zero, the elapsed time since the trip switch screen 6 was reset by the reset switch 13, and the travel time. And a detail display unit 14 for displaying distance and the like.
When the reset switch 13 is pressed, the detailed display section 14
After resetting the values of the elapsed time and the traveling distance, etc., displayed to zero to zero, the elapsed time is sequentially incremented as the time elapses, and each time the vehicle 3 travels a preset distance, The value of the traveling distance displayed on the display unit 14 is incremented, and the driver or the like is notified of the elapsed time after operating the reset switch 13 and the traveling distance.

The speedometer screen 7 has an average speedometer 15 for displaying the average speed up to the present time after the reset switch 13 on the trip meter screen 6 is operated.
A speed progress display section 16 for displaying the current speed progress screen on the screen while scrolling the entire screen to the left with the passage of time; and a speed of a section displayed on the speed progress status display section 16. A display average speed meter 17 for displaying an averaged average speed is provided, and the current speed is displayed on the right end side of the speed progress status display unit 16 and displayed on the speed progress status display unit 16 as time passes. The average speed up to the present is calculated after the reset switch 13 of the trip meter screen 6 is operated while the scrolled screen is scrolled to the left, and the average speed is displayed on the average speed meter 15. Display 16
An average speed obtained by averaging the speeds of the sections displayed in the above section is displayed on the display average speed meter 17 to inform the driver and the like of information on the speed of the vehicle 3.

Next, the operation of this embodiment will be described with reference to the flowcharts shown in FIGS.

First, the remote control device 2 is operated and the TV
When a display request for displaying the speedometer screen 6 is input on the monitor device 5, when the trip meter screen 6 is displayed on the TV monitor device 5 by the control unit 4 as shown in the flowchart of FIG. ,
It is checked whether or not the reset switch 13 on the trip meter screen 6 has been operated, and if it has been operated, the value of the speed data "SPD" is reset to zero (step ST1).

Thereafter, the speed signal output from the speed sensor of the vehicle 3 is converted into digital data (speed data) at predetermined time intervals set in advance, for example, every one second, and this is converted into speed data "SPD". (Step ST2), and based on each value of the speed data “SPD”, a range of a predetermined time before the current time, for example, “2”
The speed of the vehicle 3 at each time of “78 seconds” is displayed on the speed progress display section 16 in the form of a line graph (step ST3).

Thereafter, the trip meter screen 6 is displayed again on the TV monitor device 5 until the reset switch 13 on the trip meter screen 6 is operated or the key of the vehicle 3 is turned off. The speed signal output from the speed sensor is fetched, and the current speed is displayed on the right end of the speed progress status display unit 16, while the current speed is displayed on the speed progress status display unit 16. The speed line chart scrolls to the left,
The speed data corresponding to the time before "278 seconds" from the current time is deleted (steps ST2 to ST4).

In parallel with this operation, when the remote control device 2 is operated and a display request for displaying the speedometer screen 7 is input, the control unit 4 controls the TV as shown in the flowchart of FIG. When the trip meter screen 6 is displayed on the monitor device 5,
It is checked whether or not the reset switch 13 on the trip meter screen 6 has been operated. If the reset switch 13 has been operated, the value of the displayed average speed data "SPAD" is reset to zero (step ST11).

Thereafter, at predetermined time intervals set in advance, for example, every one second, the speed signal output from the speed sensor of the vehicle 3 is converted into digital data (speed data), which is stored in a write-once format. At the same time (step ST12), it is checked whether or not the number N of the stored speed data has reached the number of speed data that can be displayed on the speed progress display section 16, that is, "278". If the number N of the speed data has not reached “278” (step ST13), the value Σa obtained by adding the values of the stored speed data is divided by the number N of the speed data, and the display average speed data “ SPAD "is obtained (step ST14), and this value is displayed on the display average speed meter 17.
It is displayed above (step ST15).

At this time, if the number N of the stored speed data has reached "278" (step ST1).
3) The latest "278" pieces of speed data are selected from the stored speed data by the control unit 4, and a value obtained by adding the values of these speed data {
b is divided by “278” and the displayed average speed data “S
PAD "is obtained (step ST17) and displayed on the display average speed meter 17 (step ST17).
15).

Thereafter, the trip meter screen 6 is displayed again on the TV monitor 5, and the trip meter screen 6 is displayed.
Until the reset switch 13 on the vehicle side is operated or the key on the vehicle 3 side is turned off, the processing of capturing the speed signal output from the speed sensor is performed, and the value of the displayed average speed data “SPAD” is obtained. Is updated, and the value of the display average speed displayed on the display average speed meter 17 is updated (steps ST12 to ST17).

Further, when the remote controller 2 is operated and a display request for displaying the speedometer screen 7 is input in parallel with the above-described operations, the control unit 4 controls the speedometer screen 7 as shown in the flowchart of FIG. , T
When the trip meter screen 6 is displayed on the V monitor device 5, it is checked whether the reset switch 13 of the trip meter screen 6 has been operated. If the reset switch 13 has been operated, the value of the average speed data "SPA" is displayed. It is reset to zero (step ST21).

Thereafter, the value of the elapsed time (travel time data) from the time when the reset switch 13 on the trip meter screen 6 is operated is incremented at predetermined time intervals, for example, every one second. At the same time, the speed signal output from the speed sensor of the vehicle 3 is converted into digital data (speed data), and the value of the speed data per unit time is set as the value of the mileage per unit time, and the trip meter screen 6 is reset. The value of the total traveling distance data is added to the value of the total traveling distance data from the time when the switch 13 is operated, and the value of the total traveling distance data is divided by the value of the traveling time data to obtain the value of the average speed data "SPA". (Step ST22) This is the average speed meter 1
5 (step ST23).

Thereafter, the trip meter screen 6 is displayed again on the TV monitor 5, and the trip meter screen 6 is displayed.
Until the reset switch 13 on the side is operated, the speed signal output from the speed sensor is fetched, the value of the average speed data "SPA" is updated, and the average displayed on the average speed meter 15 is updated. The speed value is updated (steps ST22 to ST24).

As described above, in this embodiment, the speed at each time in the section displayed in the line graph format on the speed progress display section 16 of the speedometer screen 7 is averaged, and the display average speed meter is displayed. 17 is displayed on the speed meter screen 7, the speed status within a certain period of time displayed on the speed progress status display section 16 of the speedometer screen 7 and the average speed displayed on the display average speed meter 17 are displayed. The relationship can be matched so that the driver or the like does not get confused.

In this embodiment, when the reset switch 13 on the trip meter screen 6 is operated to reset the contents of the trip meter screen 6, the contents of the speed progress display section 16 of the speed meter screen 7 are displayed. , The contents of the average speed meter 15 and the contents of the display average speed meter 17 are reset. Therefore, when the reset switch 13 on the trip meter screen 6 is operated, not only the contents of the trip meter screen 6 but also The content of the speedometer screen 7 corresponding to the trip meter screen 6 can also be reset, thereby improving the operability.
The reset timing of the speedometer screen 7 can be made the same, and the sense of incongruity at the time of screen switching can be eliminated.

In the above-described embodiment, the trip meter screen 6 as shown in FIG. 2 and the speedometer screen 7 as shown in FIG. 3 are displayed on the TV monitor 5 as separate screens. Divide the screen into two and trip screen 6
And the speedometer screen 7 may be displayed simultaneously.

[0038]

As described above, according to the present invention, according to the first aspect, the average of the speed progress status in the section displayed on the speed progress status display portion is displayed separately from the average vehicle speed. Since the speed is displayed as the speed, the relationship between the speed progress status within a certain period of time displayed on the speed progress status display section and the displayed average speed will match, causing unnecessary confusion to the driver etc. Giving can be prevented.

According to the present invention, when the reset switch on the trip meter screen is operated, not only the contents of the trip meter screen but also the contents of the speedometer screen corresponding to the trip meter screen are reset. As a result, the operability can be improved, and the uncomfortable feeling at the time of screen switching can be eliminated with the same reset timing.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a speed display system according to the present invention.

FIG. 2 is a schematic diagram showing an example of a trip meter screen displayed by the speed display system shown in FIG.

FIG. 3 is a schematic diagram showing an example of a speedometer screen displayed by the speed display system shown in FIG. 1;

FIG. 4 is a flowchart showing a display operation example of a speed progress status display unit in the speed display system shown in FIG. 1;

FIG. 5 is a flowchart showing a display operation example of a display average speed meter in the speed display system shown in FIG. 1;

FIG. 6 is a flowchart showing an example of a display operation of an average speed meter in the speed display system shown in FIG. 1;

FIG. 7 is a block diagram showing an example of a conventionally known speed display system.

FIG. 8 is a schematic diagram showing an example of a trip meter screen displayed by the speed display system shown in FIG. 7;

FIG. 9 is a schematic diagram showing an example of a speedometer screen displayed by the speed display system shown in FIG. 7;

[Explanation of symbols]

 1: Speed display system 2: Remote control device 3: Vehicle 4: Control unit 5: TV monitor device (display) 6: Trip meter screen (speed display screen) 7: Speedometer screen (speed display screen) 8: Interface circuit 9 : CPU circuit 10: Video signal generation circuit 11: ROM circuit 12: RAM circuit 13: Reset switch 14: Detail display unit 15: Average speed meter 16: Speed progress status display unit 17: Display average speed meter

Continued on the front page (72) Inventor Masaki Takeda 1-7-1 Yokoi, Shimada-shi, Shizuoka Yazaki Keiki Co., Ltd.

Claims (3)

[Claims] 1. A display mounted on a vehicle and having a speedometer screen including an average speed display unit for displaying an average speed of the vehicle, and a speed progress status display unit for graphically displaying the progress of the speed of the vehicle; Means for calculating an average of the speed progress status in the display section when the progress status of the vehicle speed is displayed on the speed status display section on the meter screen; and displaying the obtained average speed in the speed progress status display section. Means for displaying on the speedometer screen in the vicinity of the speed display system. 2. A display mounted on the vehicle and having a plurality of speed display screens related to the speed of the vehicle, and resetting while any one of the plurality of speed display screens is displayed on the display. Means for resetting the content of the displayed speed display screen when a command is input, and resetting the content of the speed display screen corresponding to the reset speed display screen among the remaining non-displayed speed display screens And a speed display system comprising: 3. The speed display system according to claim 2, wherein the plurality of speed display screens are a trip meter screen and a speed meter screen, and when a content of the displayed trip meter screen is reset. A speed display system, wherein the corresponding contents on the speedometer screen are also reset in conjunction therewith.