JPH0413623Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle control device, and more particularly to a control device having a function of checking for errors in the combination of vehicle type and unit.

In recent years, various control devices have been proposed in order to reduce fuel consumption of vehicles such as automobiles and improve vehicle maintenance costs. For example, JP-A-55-149451
As seen in Japanese Patent Publication No. 51-137232, the shift position of the transmission is optimized by displaying shift up or down according to vehicle speed, engine speed, engine load, etc. There are known systems that allow for economical operation. Furthermore, in Utility Model Application No. 162,416/1982, the applicant proposed a device capable of displaying, in addition to the above-mentioned display, the ratio of the economic mileage to the total mileage.

For these control devices, it is necessary to combine units according to the engine model and drive system type of each vehicle. For example, since the conditions for economical driving differ for vehicle models with different gear ratios and different numbers of gears, units incorporating different programs must be prepared. When assembling a vehicle, in order to avoid mistakes in the combination of individual vehicles and control device units, parts numbers and symbols are attached to the units to clarify their type. However, if the unit is incorrectly pasted on the name plate or incorrectly assembled into the vehicle during manufacture, it is difficult to detect, and drivers who have purchased such a vehicle may be required to replace it, for example in the case of an economical driving assistance display device. This may cause problems with driving. The same can be said of not only the economic driving aid display device but also control devices having microcomputers used in ignition timing control devices, carburetor control devices, air conditioners, automatic transmission devices, anti-skid devices, and the like.

Therefore, an object of the present invention is to provide a vehicle control device having a function of checking compatibility with a unit of a vehicle type.

According to the present invention, a display device, various sensors, and various controlled devices are connected, and arithmetic processing is performed based on information input from the various sensors, and various information is displayed on the display device based on the output, or In a vehicle control device having a program for controlling a controlled device, a means for detecting that the power of a key switch is turned on, and a signal from the means for detecting that the power of the key switch is turned on are inputted. A display device is provided for displaying the unit type according to the difference in the program only after a certain period of time.

Therefore, when the key switch is turned on and operating power is applied to the unit, the type number or type symbol of the unit is displayed for a certain period of time, so even after the unit is installed in the vehicle, the connection between the vehicle and the unit can be maintained. Compatibility can be easily checked.

When implementing the present invention, the device type signal is inputted into a display device (for example, an economical odometer) that displays any necessary information signals as numbers or symbols;
It can be displayed by the display device.

Hereinafter, an embodiment in which the present invention is applied to an economical driving assistance display device will be described in detail with reference to FIGS. 1 to 6.

In FIG. 1, this economical driving assistance display device 1
is arranged on the instrument panel 2 at a position near the instrument panel 3 that is easily visible to the driver.

As shown in FIG. 2, the display device 1 includes a revolution indicator 4, a shift instruction indicator light 5, a sudden acceleration warning light 6, and an economic mileage indicator 7 on the same display surface. will be placed in

In FIG. 3, an engine E is provided with an engine rotation sensor 8, a fuel injection device F is provided with a load sensor 10, and a meter wire W leads to a speedometer S provided on the output shaft of a transmission T. A vehicle speed sensor 9 is provided. The economic driving assist device 1 includes a power line L ₁ extending from the key switch K and a signal line L ₂ extending from the rotation sensor 8.
, a signal line L ₃ extending from the vehicle speed sensor 9, and a signal line L ₄ extending from the load sensor 10 are connected to each other. 1 in the figure indicates an instrument panel.

FIG. 4 shows a control device 30 implemented in an economical driving assist system, in which a signal from a battery 21 of a vehicle enters a power supply circuit 20 via a key switch 19.
This power supply circuit 20 constitutes a means for detecting that the key switch power of the vehicle is turned on, and sends the signal to the central control unit CPU. Vehicle speed sensor 9,
Signals from the load sensor 10, rotation sensor 8, and other sensors 32 are sent to an input/output port (I/O port) 33 via an interface 1F, and then to a central control unit CPU. The central control unit CPU sends and receives signals to and from the memory unit RAM and temporary memory unit ROM in a manner to be described later, and displays the signals on the displays 4, 5A, 5B, and 7 via the driver D. In FIGS. 3 and 5, an electromagnetic pick-up type engine rotation sensor 8 is attached to the rotation shaft of the engine to detect the rotation speed of the engine (referring to the rotation speed of the engine crankshaft), and a speedometer cable W is attached to the rotation shaft of the engine. A tachogenerator-type vehicle speed sensor 9 is provided connected in the middle, and a potentiometer-type load sensor 10 is provided in the fuel injection device F to detect the engine load via the operating angle of the accelerator lever. Then, the output of each sensor is sent to the driving state determination device 11, which determines whether the vehicle is being driven economically or not.
It is displayed on a revolution indicator 4, a shift instruction indicator light 5, a sudden acceleration warning light 6, and an economic mileage indicator 7.

By the way, as shown in FIG. 2, the rotation indicator 4 has a bar graph display type using 25 segment LEDs. This light emits green light when the engine speed is in the economical speed range, orange light when the engine speed exceeds the economical speed range and non-economical speed range, and red light when the engine is in the overrun range, so that the driver can easily identify the economical driving situation. I have to. The nighttime display works in conjunction with the lighting switch 12 to illuminate the entire surface of the display device 1 and reduce the luminance of the LEDs to make it easier for the driver to see the rotation indicator 4.

The shift instruction indicator light 5 is connected to the engine rotation sensor 8.
The driving state determining device 11 that receives the detection signals from the engine speed sensor 9 determines the shift position range based on the engine speed and vehicle speed, and determines the shift position range based on the up/down conditions based on these values and the relationship between the engine load and the speed. When the up zone and down zone of the data stored in advance in the arithmetic processing unit (microcomputer) 13 match each other, the shift up light 5B or shift down light 5A is lit and the driver can shift or down the gear accordingly. This allows the engine to operate within an economical engine speed range while satisfying the load. The lighting display is a lamp-lit type and uses an orange lens. Further, at night, the light is dimmed in conjunction with the lighting switch 12 to prevent the driver from being dazzled.

The sudden acceleration warning light 6 is activated by the arithmetic processing unit 13,
For vehicle speeds of 30 km/h or higher, acceleration is calculated from the differential value of the vehicle speed and the vehicle speed, and when the vehicle is in a pre-memorized rapid acceleration zone, a red light is turned on to warn the driver.

The economic mileage display meter 7 is a 7-segment, 4-digit fluorescent display tube that displays the economic mileage Km and its percentage to the total mileage. The drive system is a dynamic drive, and both distance and percentage are displayed in integer digits as zero success. The display range is from distance 0 to
9999 and reset to 0 every 10000, the ratio is 0 to 100.
and resets outside this range. The display of the above distance and ratio is performed by switching the display mode and unit display in the sequence of distance → ratio → lights out → distance, etc. using the select switch 14, and resetting is performed using the reset switch 15. Incidentally, at night, the light is dimmed in conjunction with the lighting switch 12 to make it easier for the driver to see the display. Alternatively, the program may be changed to add time display to the display mode.

Of the above, the economic mileage is the load sensor 1
0. The detection signals of the engine rotation sensor 8 and the vehicle speed sensor 9 are processed by the arithmetic processing unit 13, and the distance is accumulated when the load/rotation data is included in the economical driving zone stored in advance and there is no sudden acceleration. .

On the other hand, the ratio of the economical mileage to the total mileage is calculated and displayed by the arithmetic processing unit every 1 km the vehicle travels as economic mileage x 100/total mileage (%).

The driving state determination device 11 includes an arithmetic processing section 1
3, engine rotation sensor 8 and vehicle speed sensor 9
Schmitt circuits 16 and 17 that shape the waveform of the signal detected by the load sensor 10, an A/D converter 18 that digitizes the output signal of the load sensor 10, and a driving power supply circuit 2 connected to the ignition switch 19.
0, a standby power supply circuit 22 connected to the battery 21, a revolution indicator 4, a shift status indicator 5, a sudden acceleration warning light 6, and an economic mileage indicator 7.
Drivers 23, 24, 25 that respectively drive
and 26A, 26B, a shift register 27 for the driver 23, and decoders 28A and 28B for the drivers 26A and 26B.

In the present invention, the driving power supply circuit 2
0 is connected to the arithmetic processing section 13 including a timer 29, and the timer 29 is connected to the economic mileage indicator 7 via the driver 30. The timer 29 is configured such that when power is input from the drive power supply circuit 20, the power is not input to the arithmetic processing section 13 for a certain period of time, and a signal is sent to the driver 30 during that time. The driver 30 receives a signal from the timer 29 and causes the economic mileage indicator 7 to display a number representing the type of unit.

Next, the operation of the present invention will be explained with reference to FIGS. 5 and 6. When the key switch 19 is turned on (step S ₁ ), the signal is input to the driving power supply circuit 20. Then, it is determined whether or not the power is turned on for the first time (in this embodiment, the first power supply from the key switch 19 is turned on after power is supplied from the battery 21 to the standby power supply circuit 22) (step S ₂ ), and if YES, the timer 29 is turned on. Since power input to the arithmetic processing section 13 is delayed for a certain period of time, the arithmetic processing section 13 does not operate. During this time, the signal from the timer 29 passes through the driver 30 to the display section 7a of the economic mileage indicator 7 (FIG. 2).
(step _S3 ), and a number representing the type of unit is displayed (step _S4 ). Therefore, by looking at this number, it is possible to judge whether the installed unit is suitable for the vehicle. When a certain period of time has passed, the timer 29
stops sending signals and the economy odometer 7
The number indicating the unit type displayed on the screen disappears. Then, initial setting work is performed (step
_S5 ). This step _S5 is NO in step _S2 .
In this case, the process is performed immediately without passing through step _S3 . Next, various data are inputted from the sensors 8, 9, and ₁₀ (step S6), and the arithmetic processing unit 13 is operated via the timer 29 to determine the running state.
(Step _S7 ), and an economical driving assistance display is made (Step _S8 ).

As explained above, according to the present invention, the type number or type symbol of the unit is displayed for a certain period of time when the power for operating the device is input for the first time. compatibility with the unit can be easily checked, and operators can be prevented from installing a control device with the wrong program.

[Brief explanation of the drawing]

Figure 1 is a front view showing an example of the economical driving aid device of the present invention installed on an instrument panel, Figure 2 is a front view of the economical driving aid device of the present invention shown in Figure 1, and Figure 3. 4 is a schematic diagram showing an embodiment of the present invention, FIG. 4 is a block diagram thereof, and FIG.
The figure is a detailed explanatory diagram of FIG. 4, and FIG. 6 is a flowchart. DESCRIPTION OF SYMBOLS 1...Economical driving auxiliary display device, 4...Revolution indicator, 7a...Display unit, 8...Engine rotation sensor, 9...Vehicle speed sensor, 10...Load sensor, 1
1... Operating state determination device, 13... Arithmetic processing unit,
20...power supply circuit, 29...timer.

Claims (1)

[Scope of utility model registration request] It is connected to a display device, various sensors, and various controlled devices, performs arithmetic processing based on the information input from the various sensors, and uses the output to display various information on the display device or control the controlled device. In a vehicle control device having a program, the program includes means for detecting that the key switch is turned on, and the program only for a certain period of time after inputting a signal from the means for detecting that the key switch is turned on. 1. A vehicle control device comprising: a display device that displays unit types based on differences in unit types.