JP3010416B2 - Odd / trip display control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic odd / trip display control device for a vehicle, and more particularly, to various kinds of maintenance required for an odd / trip display unit using a liquid crystal in accordance with a traveling distance of a vehicle. The present invention relates to an odd / trip display control device that also displays information.

[0002]

2. Description of the Related Art An odometer for a vehicle which stores and displays a mileage measured based on wheel rotation has not only a total or integrated mileage but also a mileage starting from an arbitrarily set starting point, that is, a trip meter function. And has conventionally been constituted by a mechanical mechanism. on the other hand,
There has been known an alarm device which is connected to such an odometer and notifies the time of replacement of parts in accordance with a traveling distance. For example, the configuration of such a conventional alarm device is shown in FIG. In the figure, the mechanical odometer / trip meter 120 uses a set of rotating wheels as an indicator. When the set traveling distance is exceeded, the rotating wheels rotate beyond a predetermined position, and the switch 121 is operated. Then, the alarm lamp 122 is turned on, and the alarm contents are displayed on the alarm display 123.

[0003]

As described above, the conventional odometer / trip meter 120 not only has a display function by a rotating character wheel for odometer display or trip display, but also informs the time of replacement of parts. The alarm display function was also provided. As a result, the operation panel in the driver's seat requires a larger space, so that downsizing cannot be performed, operation is complicated, and there is a problem that the usability is not excellent. Further, in the case of displaying a plurality of types of alarms or repeatedly issuing an alarm for each predetermined traveling distance, the mechanism becomes complicated. SUMMARY OF THE INVENTION The present invention has been made to solve such problems and disadvantages of the prior art, and has excellent operability and reduced size of od / trip which can display od / trip and alarm with a small number of parts. It is an object to provide a display control device.

[0004]

To achieve the above object, an odd / trip display control device according to the present invention comprises: a nonvolatile memory for storing odd / trip measurement data and alarm determination / transmission data; run the odo / trip measurement based on the running signal, meter measuring the odo / trip
Outputs a signal including measurement data, said the odo / trip measuring means for exchanging pairs Shi odo / trip measurement data in the nonvolatile memory, signal and data read from the nonvolatile memory from the odometer / trip measuring means and alarm determination / transmission means for sending an alarm signal to the panel display circuit based on the odo / trip odometer / trip data to a liquid crystal type display based on the signal <br/> No. or said alarm signal from the measuring means or said panel display circuit for displaying an alarm, and input switch performs the input detection and the input determination from said input switch, by being configured and an input determining means for inputting a signal to the odo / trip measuring means Features.

[0005]

Alternatively, the odd / trip measuring means and the alarm judging / sending means are configured to alternately display the odd / trip data and the alarm on the display while the vehicle is running. I do.

[0007]

In the odd / trip display control device according to the present invention, the input determining means determines the type of the switch input based on the input from the input switch, and sends the determination result to the odd / trip measuring means, and the odd / trip is measured. The measuring means executes the odd measurement or the trip measurement based on the input, and displays it on the display. On the other hand, the alarm judging / sending means also displays an alarm on the display unit based on the input from the odd / trip measuring means and the data stored in the nonvolatile memory. As a result, the odd / trip display and the alarm display can be displayed on the same display device, so that downsizing of the device and improvement in usability can be realized together.

[0008]

Furthermore, during driving of the automobile, the odd / trip measuring means and the alarm judging / sending means alternately display the odd / trip data and the alarm on the display.
There is no adverse effect that the odd / trip value cannot be visually recognized due to continuous alarm display during driving, and thus a safe driving environment is realized.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a functional block diagram of an odd / trip display control device according to an embodiment of the present invention.
FIG. 2 is an example of a circuit configuration that embodies the functional blocks of FIG.

First, the configuration of the present invention will be described.
In FIG. 1, an odd / trip display control device 1 according to the present invention includes a nonvolatile memory (NVM) 9 for storing odd / trip measurement data and alarm determination / transmission data, and an odd / trip signal based on a running signal SR1 from a running sensor. run the trip measurement, signal 3b including odo / trip measurement data measured outputs a 3c, for exchanging odo / trip measurement data 3a between the nonvolatile memory 9 odo /
Trip measuring means 3 and the odd / trip measuring means 3
The signal 3b and alarm determining / transmitting means 4 for sending an alarm signal 4a on the basis of the data read 9a from the nonvolatile memory 9 to panel display circuit 7 from the odometer / trip
And the panel display circuit 7 for displaying the odometer / trip data or alarm on the LCD type display based on the signal 3c or the alarm signal 4a from flop measuring means, an input switch SW, the input detection from the input switch SW An input judgment is made, and a signal 2 is sent to the odd / trip measuring means 3.
and input determination means 2 for inputting b.

Alternatively, the input judging means 2 outputs a signal 2a, and comprises a setting means 5 for storing initial data or updated data 5a for alarm judgment / transmission in a nonvolatile memory 9 based on the signal 2a. 2 may be configured to send the signal 2a for activating the setting means 5 based on an input from the input switch SW. Or,
As described above, the od / trip measurement unit 3 and the alarm determination / transmission unit 4 may be configured to alternately display the od / trip data and the alarm on the display 8 while the vehicle is running.

Odds having the above-described functional blocks /
The trip display control device is realized by a circuit configuration as shown in FIG. That is, the odd / trip display control device 1 includes a microcomputer 23 having a CPU 24 and a memory 25, drivers 10 to 12 driven by signals from the microcomputer 23, a non-volatile memory 9 for transmitting and receiving data to and from the microcomputer 23, An input switch SW connected to the computer 23 to input a signal, a running signal SR1 from a running sensor (not shown) input to the microcomputer 23, a speedometer 19 driven by the driver 10, and a rotation driven by the driver 11 The liquid crystal display 8 is driven by a driver 12. Note that this configuration is merely an example.

The memory 25 of the microcomputer 23 is composed of a RAM or a ROM.
The input determining means 2, the odd / trip measuring means 3, the alarm determining / sending means 4, and the setting means 5 are stored in a program procedure executable by the CPU 24. Therefore, each of the above means functions by execution of the CPU 24.

FIG. 3 is a schematic diagram showing a specific example of the odd / trip display control device according to the present invention. As shown,
A liquid crystal display 8 and an input switch SW are arranged on the front panel in proximity to the speedometer 19 and the tachometer 20.

Next, the operation of the odd / trip display control apparatus according to the present invention will be described in detail. The input judging means 2 receives a signal from the input switch SW and sets the signals 2a and 2b according to the judgment result. Alternatively, it is sent to the odd / trip measuring means 3. The signal 2a is a signal for setting or updating a set value, and the signal 2b is a signal for displaying an odometer measurement display or for instructing trip reset and od / trip switching. The signal from the input switch SW is generated by depressing the switch for a predetermined time or executing a plurality of clicks in a short cycle.
A variety of different input signals can be generated.

The odd / trip measuring means 3 always receives the traveling signal SR1 from the traveling sensor, constantly measures the traveling distance as an odd value, records it in a recording area such as a RAM or the nonvolatile memory 9, and outputs the signal 3b. Is always output to the alarm determination / transmission means 4. Here, if the signal 2b received from the input determination means 2 is an odd display instruction,
The signal 3c is sent to the panel display circuit 7, and the measured odometer value is displayed on the liquid crystal display panel 8 by a series of numbers.
When the display is in the trip mode and the signal 2b input from the input determination means 2 is a trip reset, a recording area such as a RAM is reset.

The alarm judging / transmitting means 4 always receives the signal 3b indicating the traveling distance, and constantly compares the signal 3b with the alarm generation timing setting data stored in the nonvolatile memory 9. If the traveling distance is equal to or exceeds the set data of the alarm occurrence timing, a signal 4a for instructing an alarm display is sent to the panel display circuit 7, and an alarm is displayed on the liquid crystal display panel 8. The alarm includes, for example, an oil change alarm every 5000 kilometers of travel. When it is time to change the oil, for example, an OIL character as shown in FIG. Alternatively, the warning of the timing belt replacement every 100,000 kilometers of traveling is, for example, a T-belt shown in FIG.
The bELT character is displayed on the display 8.

When the setting means 5 receives the set value setting or update instruction signal 2a sent from the input determining means 2, the setting means 5 organizes the setting or update data and sends it to the signal 5a.
To the nonvolatile memory 9 to write or update data in the nonvolatile memory 9. Therefore, the alarm determination / transmission unit 4 reads the written or updated data from the nonvolatile memory 9.

FIG. 6 is an example of an address map of the nonvolatile memory 9. In the figure, odd / trip data is recorded from addresses 0 to 47, and an address 48 is recorded.
, The timing belt replacement cycle of 100 is recorded. Since this unit has a unit of 1000 kilometers, it is set to 100,000 kilometers. Also, 5 which is the oil change cycle is recorded in the address 49. Since this unit also has a unit of 1000 kilometers, it is set to 5000 kilometers. By activating the setting means 5, these exchange cycles can be freely set or updated.

FIG. 4 is a flowchart showing the main operation of the odd / trip display control device in FIG. In the main operation, the odd / trip display control device starts operating by turning on an ignition switch (step S1).
A mode setting for setting or updating the set value is confirmed (step S2). The A mode is a timing belt replacement setting mode. If the mode is the A mode, an A mode setting process is performed (step S4). Next, the B mode setting is confirmed (step S3). The B mode is an oil change setting mode. If the mode is the B mode, a B mode setting process is performed (step S5). In addition, A,
The mode B is set by turning on a mode selection switch (not shown) while the ignition switch is turned off. After the mode setting process is performed, the ignition switch is turned on again to return to the steady state.

If the mode is not the setting mode, it is checked whether or not the measured odometer value has reached the set value of 100,000 km as a unit or an updated value which is a multiple thereof (step S6). If the kilometers have been reached or exceeded, the alarm display A, that is, the display shown in FIG. 8 is performed for 5 seconds (step S7). Next, it is checked whether or not the odd measurement value has reached the set value of 5000 km, which is the unit, or the update value which is a multiple of the set value (step S).
8) If the measured odometer is less than the kilometer and there is no speed signal input (step S9), that is, if the car is not in a running state, check the input switch SW;
If the input switch SW is not turned on (step S
10) The alarm display B, that is, the display shown in FIG. 7 is performed for 5 seconds (step S11). Thereafter, it is confirmed whether or not the ignition switch has been turned off. If not, the flow returns to step S6.

On the other hand, in step S8, when the measured odometer value is equal to or less than the set value of the unit 5000 km or the update value which is a multiple thereof, and in step S9, when there is a speed signal input, that is, when the vehicle State, or step S1
If the input switch SW is on at 0, the odd / trip display is performed for 5 seconds (step S1).
3). Next, odd accumulation is continued (step S14).
As described above, when the traveling distance has reached the timing belt replacement time and the vehicle is in a running state, the warning display of timing belt replacement and the odd / trip display are alternately displayed for 5 seconds each. by this,
Since the warning display of the timing belt replacement is continuously displayed even while the vehicle is traveling, it is possible to avoid a problem that the odd / trip display cannot be confirmed.

FIG. 5 is a flowchart relating to the setting operation of the odd / trip display control device of FIG. That is, this is a flowchart that can be applied to either step S4 or S5 in FIG. First, according to the mode,
The display of the oil (or timing belt) setting flashes (step S21). Here, in the case of updating, for example, after the oil change is performed, when the fact that the processing has been performed is input by, for example, triple clicking of the input switch SW (step S22), the process proceeds to the following steps. At the time of the initial setting, not the update, the loop can be exited by triple-clicking the input switch SW or the like.

At this point, the numerical value setting process is started, and the numerical value blinks on the display (step S23). The numerical value displayed is two digits and two digits with a hyphen between them. Initially, for example, 00-01 is displayed. The two digits on the left are the accumulated traveling distance, the two digits on the right are the set distance, and the unit differs depending on the mode. For example, if the oil change mode is 1
000 kilometers, and in the timing belt exchange mode, in units of 10,000 kilometers. Here, when the input switch SW is pressed for a period of 2 seconds or less (step S24,
Step S25), it is determined to be incremented, and the right two digits of the displayed numerical value are incremented to 00
-02 is displayed. Then, the flow returns to step S23.

By repeating the above operation, if the displayed value of the right two digits indicating the set distance becomes, for example, 00-05 shown in FIG. 9, that is, if the oil change cycle becomes 5000 km, the input switch SW is set. Is pressed for more than 2 seconds (step S25), the process exits the increment loop and the setting of this value is executed (step S27). For example, in the case of update, if the display is 05-05 before the update,
Since it is indicated that the update time of 5,000 km has been reached after traveling 5,000 km, step S2
In step S2, it is input that the processing has been performed by triple-clicking the input switch SW, and the above-described series of steps S2
After going through the steps 3 to S25, 05 is performed in the step S26.
If the update is set to -10, the next update time will be 10-10
Will be displayed. The display of the right two digits can be freely set by the operator. For example, when the oil change cycle is set to 3000 km, the oil change cycle may be set to 00-03 in the increment loop.

Similarly, as shown in FIG. 10, when 10-10 is displayed in the timing belt exchange mode, the unit of the timing belt exchange mode is 10,000 kilometers. This indicates that the update time has arrived. The timing belt replacement cycle can be set to, for example, 70,000 kilometers of update time instead of 100,000 kilometers of update time. That is, it is preferable to set 00-07.

In the above embodiment, a liquid crystal display is used. However, a fluorescent display tube, electroluminescence (EL), or light emitting diode (LED) can be used as a display device.

[0029]

As described above, according to the present invention, the odd /
The trip display control device executes an odometer measurement or a trip measurement based on an operator's input, and displays an odometer / trip measurement means displayed on the display and an alarm on the display based on data stored in the nonvolatile memory. Alarm judgment to be displayed /
Since the transmitting means is provided, it is possible to display the odd / trip display and the alarm display on the same display. Therefore, the operation panel in the driver's seat can be reduced in size, the operation can be simplified, and the usability can be improved.

Further, the apparatus is provided with a setting means for storing initial data or update data for alarm determination / transmission in a non-volatile memory in response to an input from the operator, so that the operator can easily perform the setting operation. It can be easily executed and has an effect of improving usability.

Also, when the vehicle is running, the odd /
Equipped with an od / trip measurement unit and an alarm judgment / transmission unit that operate so that the trip data and the alarm are alternately displayed on the display, so that the alarm is continuously displayed during operation and the od / trip value cannot be visually recognized. Therefore, there is an effect that a safe driving environment can always be realized.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of an odd / trip display control device according to an embodiment of the present invention.

FIG. 2 is a circuit configuration diagram for realizing the functional blocks of FIG. 1;

FIG. 3 is a schematic diagram showing a specific example of an odd / trip display control device according to the present invention.

FIG. 4 is a main operation flowchart of the odd / trip display control device of FIG. 1;

FIG. 5 is a setting operation flowchart of the odd / trip display control device of FIG. 1;

FIG. 6 is an example of an address map of a nonvolatile memory in the odd / trip display control device according to the present invention.

FIG. 7 is an example of an alarm display on the display of the odd / trip display control device according to the present invention.

FIG. 8 is an example of an alarm display on the display of the odd / trip display control device according to the present invention.

FIG. 9 is an example of a setting display on a display of the odd / trip display control device according to the present invention.

FIG. 10 is an example of a setting display on a display of the odd / trip display control device according to the present invention.

FIG. 11 is a schematic view of a conventional od / trip meter.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 odd / trip display control device 2 input determination means 3 odd / trip measurement means 4 alarm determination / transmission means 5 setting means 7 panel display circuit 8 display 9 non-volatile memory (NVM) SR1 running signal SW input switch

Claims (2)

(57) [Claims] 1. Od / trip measurement data and alarm judgment /
Nonvolatile memory for storing outgoing data and (NVM), by running the odo / trip measurement based on the running signal (SR1) from the travel sensor, a signal including the total measuring the odo / trip measurement data <br/> data outputs, and odometer / trip measuring means for exchanging pairs Shi odo / trip measurement data in the nonvolatile memory (NVM), it was the signal and read out from said nonvolatile memory (NVM) from the odometer / trip measuring means data and alarm determination / transmission means for sending an alarm signal to the panel display circuit based on the odo / trip measurement
Od / trip data or an alarm is displayed on a liquid crystal display based on a signal from the means or the alarm signal.
Said panel display circuit, the input switch (SW), performs the input detection and the input determination from the input switch (SW), was constructed and an input determination means for inputting a signal to the odo / trip measuring means Odo /
Trip display control device. 2. The system according to claim 1, wherein said odd / trip measuring means and said alarm judging / transmitting means alternately display said odd / trip data and said alarm on said display while the vehicle is running. of claim 1 Symbol placement to odo /
Trip display control device.