JPH0441331Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a vehicle speed warning device that warns when the traveling speed of a vehicle reaches an arbitrary set value. Relates to a vehicle equipped with a constant speed traveling device.

(Prior art) Conventionally, from the viewpoint of reducing the accelerator work of the occupant when a car is traveling on a highway, etc., a vehicle speed detection device has been used to detect The system compares and determines the magnitude of the vehicle's current vehicle speed and a set vehicle speed preset by the occupant, and controls the accelerator opening based on the comparison, thereby causing the vehicle to travel at a constant speed at the set vehicle speed. Constant speed traveling devices are well known.

On the other hand, a vehicle speed warning device is also well known that warns the vehicle when the vehicle speed reaches an arbitrary vehicle speed preset by a passenger to prevent excessive speed. As an example, as disclosed in Utility Model Application Publication No. 57-201968, etc.
Equipped with a legal vehicle speed alarm that activates an alarm when the vehicle speed reaches a legal vehicle speed, and an optional vehicle speed alarm that activates an alarm when the vehicle speed reaches a preset arbitrary vehicle speed. A system has been proposed that would cancel the warning.

However, in a vehicle equipped with both the constant speed traveling device and the variable vehicle speed warning device described above, when the vehicle is driving in a city, the alarm setting vehicle speed of the variable vehicle speed warning device is set to, for example, 50 km/h, and then the vehicle speed is set to 50 km/h. When the vehicle enters the expressway and the constant speed setting vehicle speed of the constant speed traveling device is set to, for example, 80 km/h, that is, when the constant speed setting vehicle speed becomes higher than the alarm setting vehicle speed, the vehicle speed is set as the alarm of the variable vehicle speed warning device. Since the set vehicle speed is exceeded, the warning device continues to activate the alarm, which may cause discomfort to the occupants and impede safe driving. This problem can be avoided by raising the alarm setting vehicle speed of the variable vehicle speed warning device to the constant speed setting vehicle speed and then setting it again. However, this has to be reset each time the constant speed setting vehicle speed is increased, which poses a problem in that the operation is cumbersome.

(Problems to be solved by the invention) The present invention has been made in view of the above points, and its purpose is to prevent the vehicle speed when the vehicle is running at a constant speed is higher than the alarm setting vehicle speed of the variable vehicle speed warning device. When the vehicle speed is set, the alarm setting vehicle speed is automatically increased accordingly, thereby eliminating the troublesome operation of changing the alarm setting vehicle speed when the constant speed vehicle speed is set to increase. There is a particular thing.

(Means for solving the problem) In order to achieve the above purpose, the solution of the present invention is as follows:
As shown in FIG. 1, it is equipped with a vehicle speed setting device that sets the vehicle speed when the vehicle is running at a constant speed, and a variable vehicle speed alarm that activates an alarm when the vehicle speed becomes higher than a preset arbitrary vehicle speed. In an automobile, a constant speed setting vehicle speed detecting means for detecting a set vehicle speed of the vehicle speed setting device, an alarm setting vehicle speed detecting means for detecting a setting vehicle speed of the variable vehicle speed alarm, and an output from the constant speed setting vehicle speed detecting means. a comparison means for comparing the output from the alarm setting vehicle speed detection means; and a comparison means that receives the output from the comparison means and detects when the constant speed setting vehicle speed of the vehicle speed setting device is higher than the vehicle speed setting of the variable vehicle speed alarm. The controller is provided with a controller that increases the set vehicle speed of the vehicle so that the set vehicle speed becomes equal to or higher than the constant speed set vehicle speed.

(Function) With the above configuration, in the present invention, the constant speed setting vehicle speed of the automobile detected by the constant speed setting vehicle speed detection means is compared with the alarm setting vehicle speed of the variable vehicle speed setting device, and the constant speed setting vehicle speed is determined. is set to a higher vehicle speed than the alarm setting vehicle speed, the controller controls the alarm setting vehicle speed to be the same as or higher than the constant speed setting vehicle speed, and automatically resets the alarm setting vehicle speed. Do it on purpose. This eliminates the trouble of resetting the alarm vehicle speed each time the constant vehicle speed is set, in order to avoid the alarm activation of the alarm.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings from FIG. 2 onwards.

FIG. 2 shows the overall configuration of a vehicle speed warning device for a vehicle according to the first embodiment of the present invention, in which 1 detects the current vehicle speed V _P of the vehicle and outputs a pulse signal with a frequency corresponding to the vehicle speed V _P The vehicle speed sensor 2 is an F/V conversion circuit that converts the frequency of the pulse signal from the vehicle speed sensor 1 into a voltage according to the frequency.
The output of the V conversion circuit 2 is connected to a vehicle speed setting device 3 that sets the vehicle speed V _C when the vehicle is running at a constant speed, and operates to issue an alarm when the vehicle speed reaches a preset arbitrary alarm setting vehicle speed V _W Variable vehicle speed alarm 19
is input.

The vehicle speed setting device 3 includes an auto cruise set switch 4 which is always OFF to set the vehicle to run at a constant speed, and an output signal when the switch 4 is ON.
An AND circuit 5 that maintains the L _O level and outputs a Hi signal when it becomes OFF, an auto cruise coast switch 6 that is always OFF and that decelerates the set vehicle speed V _C when the vehicle is running at a constant speed, and
AND circuit 7 which keeps the output signal at L _O level in the ON state and outputs a Hi signal in the OFF state, and the above 2
One of the outputs of the two AND circuits 5 and 7 is Hi
OR circuit 8 that outputs a Hi signal when the level is high
and a first sample hold circuit 9 that stores the output signal of the F/V conversion circuit 2 (signal representing the current vehicle speed V _P ) as a constant speed setting vehicle speed signal when receiving the Hi signal of the OR circuit 8; The output signal of the first sample hold circuit 9 (constant speed setting vehicle speed signal) is compared with the output signal of the F/V conversion circuit 2, and the F/V
a first comparison circuit 10 that outputs a Hi signal when the output signal of the conversion circuit 2 is smaller than the output signal of the first sample and hold circuit 9, that is, when the current vehicle speed V _P is lower than the constant speed setting vehicle speed V _C ; OR circuit 11 that outputs a Hi signal when the auto cruise set switch 4 is in the ON state or when the output signal of the first comparison circuit 10 is at Hi level.
and the above auto cruise set switch 4.
An inverting circuit 12 that inverts the ON/OFF output, and an AND that outputs a Hi signal when the outputs of the inverting circuit 12 and the OR circuit 11 are both at Hi level.
The engine includes a circuit 13 and an auto cruise actuator 14 which receives a Hi signal from the AND circuit 13 and increases the opening degree of the accelerator of the engine, that is, turns the accelerator into an ON state. Then, when the auto cruise set switch 4 is momentarily turned ON when the vehicle reaches the target vehicle speed, that vehicle speed is stored in the first sample and hold circuit 9 as the constant speed setting vehicle speed V _C , and the first comparison In circuit 10, the current vehicle speed V _P is compared with the constant speed setting vehicle speed V _C ,
When the current vehicle speed V _P is lower than the constant speed setting vehicle speed V _C ,
By outputting a Hi signal from the AND circuit 13 and turning on the actuator 14, the accelerator is turned on and the car is accelerated, while the vehicle speed
When V _P is higher than the constant speed setting vehicle speed V _C , AND
By setting the output of the circuit 13 to the L _O level and turning off the actuator 14, the accelerator is turned off and the car is controlled to decelerate, thereby causing the car to run at a constant speed set vehicle speed V _C. Also, set auto cruise set switch 4.
By continuing the ON state, the AND circuit 13 outputs a Hi signal to accelerate the car, and the switch 4
When the vehicle returns to the OFF state, the vehicle speed at that time is stored in the first sample and hold circuit 9, thereby increasing the constant speed setting vehicle speed _V.sub.C. Furthermore, by continuing the ON state of the auto cruise coast switch 6, the output signal of the AND circuit 13 _is
level and decelerate the car, and turn the switch 6
When the vehicle returns to the OFF state, the vehicle speed at that time is stored in the first sample and hold circuit 9, thereby reducing the constant speed setting vehicle speed _V.sub.C.

The vehicle speed setting device 3 includes a brake switch 15 that is turned on when a brake pedal (not shown) of the automobile is pressed, a clutch switch 16 that is turned on when a clutch pedal (not shown) is pressed, and a clutch switch 16 that is turned on when a clutch pedal (not shown) is pressed. It is equipped with an auto cruise reset switch 17 that cancels constant speed driving by
8 to the reset terminal of the first sample and hold circuit 9, and when any one of the switches 15 to 17 is activated while the automobile is running at a constant speed.
When the circuit turns on, the stored value of the first sample and hold circuit 9 is erased, and the constant speed driving of the vehicle is canceled.

On the other hand, the variable vehicle speed alarm 19 receives a Hi signal from a speed alarm set switch 20 that sets the alarm setting vehicle speed V _W of the automobile, and an ON signal from the switch 20 or a Hi signal from an AND circuit 28 to be described later. The OR circuit 21 outputs the
When receiving the Hi signal from the OR circuit 21, the F/
Output signal of V conversion circuit 2 (signal representing current vehicle speed _VP )
The output signal of the second sample and hold circuit 22 (alarm setting vehicle speed signal) is compared with the output signal from the F/V conversion circuit 2, and the
When the output signal from the V conversion circuit 2 is larger than the output signal from the second sample hold circuit 22,
That is, a second comparison circuit 23 outputs a Hi signal when the current vehicle speed V _P is higher than the alarm setting vehicle speed V _W ;
It is provided with a speed alarm buzzer 24 that activates an alarm upon receiving the Hi signal from the second comparison circuit 23, and a speed alarm reset switch 25 for erasing the stored value of the second sample hold circuit 22. When the speed alarm set switch 20 is turned on while the car is running, the vehicle speed at that time is stored in the second sample hold circuit 22 as the alarm setting vehicle speed V _W , and the alarm setting vehicle speed V _W is compared with the second comparison. In circuit 23, the current vehicle speed V _P
In comparison, the speed alarm buzzer 24 is configured to activate an alarm when the current vehicle speed V _P is higher than the alarm setting vehicle speed V _W .

Furthermore, 26 is an AND circuit that outputs a Hi signal when the auto cruise set switch 4 is in the ON state and a Hi signal is output from the second comparison circuit 23 in the variable vehicle speed alarm 19; The output of the circuit 26 is input to the S terminal of the flip-flop circuit 27. Also, 2
8 is the output from the Q terminal of the flip-flop circuit 27 and the AND of the vehicle speed setting device 3.
This is an AND circuit that outputs a Hi signal when the outputs of circuit 5 are both at Hi level, and its output is input to the R terminal of the flip-flop circuit 27 and the OR circuit 21 of the variable vehicle speed alarm 19, and the output is input to the OR circuit 21 of the variable vehicle speed alarm 19. By outputting a trigger signal from the AND circuit 28 to the set input of the second sample hold circuit 22 of the variable vehicle speed alarm 19 through the operation of the flip-flop circuit 27 when the set switch 4 changes from the ON state to the OFF state. , the vehicle speed at that time is stored in the second sample and hold circuit 22 as the alarm setting vehicle speed _VW .

That is, with the above circuit configuration, when the constant speed setting vehicle speed V _C of the vehicle speed setting device 3 is set due to ON/OFF operation of the auto cruise set switch 4, the constant speed setting vehicle speed V _C is held as a first sample. A constant speed setting vehicle speed detecting means which is detected by the circuit 9, and an alarm setting which detects the alarm setting vehicle speed _VW set by the variable vehicle speed alarm 19 by the second sample hold circuit 22. Vehicle speed detection means and auto cruise set switch 4
is operated ON/OFF, AND of vehicle speed setting device 3
At the time when the Hi signal is output from the circuit 5, there is provided a comparison means for comparing the output from the constant speed setting vehicle speed detection means with the output from the alarm setting vehicle speed detection means, and a comparison means that receives the output from the comparison means and determines the constant speed setting. When the vehicle speed V _C is higher than the alarm setting vehicle speed V _W , the alarm setting vehicle speed V _W
The controller is configured to be reset to raise the temperature.

Next, to explain the operation of the above embodiment,
In a state where the alarm setting vehicle speed _VW is stored in the second sample hold circuit 22 in advance by turning on the speed alarm set switch 20 of the variable vehicle speed alarm 19, the accelerator pedal is depressed or the auto cruise set switch 4 is turned on. of
If the vehicle accelerates due to continued operation in the ON state and the vehicle speed becomes higher than the above alarm setting vehicle speed V _W ,
A Hi signal is output from the second comparison circuit 23, and the speed alarm buzzer 24 issues an alarm.
One input of the AND circuit 26 becomes Hi level.

After this, when the vehicle speed increases further and reaches the target vehicle speed, turn on the auto cruise set switch 4 momentarily or turn the switch 4 on.
When returning from the state to the OFF state, first of all, when the auto cruise set switch 4 is in the ON state, the above
The other input of the AND circuit 26 also becomes Hi level, and a Hi signal is output from the AND circuit 26 to the S terminal of the flip-flop circuit 27, and the output of the Q terminal of the flip-flop circuit 27 and one input of the AND circuit 28 are Maintained at Hi level. Then, the subsequent auto cruise set switch 4
In the OFF state, the output of the AND circuit 26, that is, the S terminal input of the flip-flop circuit 27 is
At the same time, the output of the _AND circuit 5 switches to the Hi level and the first sample and hold circuit 9 enters the set state, and the vehicle speed at that point is set as the constant vehicle speed V _C and the first sample and hold is carried out. It is stored in the circuit 9, and the vehicle uses its constant speed setting vehicle speed.
With V _C, the vehicle speed is suppressed so that it runs at a constant speed.

Also, this auto cruise set switch 4
The output of the AND circuit 28 becomes Hi level due to the output of the Hi level signal from the AND circuit 5 due to the OFF state, and the output of the Hi level signal from the AND circuit 28 causes the Q of the flip-flop circuit 27 to become Hi level.
As the terminal output returns to the L _O level, the second sample and hold circuit 22 enters the set state, and the vehicle speed at that time, that is, equivalent to the constant speed setting vehicle speed V _C stored in the first sample and hold circuit 9, is set. The vehicle speed is stored again in the second sample hold circuit 22 as the alarm setting vehicle speed _VW , and this alarm setting vehicle speed
By changing _VW , Hi from the second comparator circuit 23 is
The signal output stops and the speed alarm buzzer 2
4 alarm stops.

Therefore, in this case, when the constant speed setting vehicle speed V _C of the vehicle speed setting device 3 is set to a higher vehicle speed than the alarm setting vehicle speed V _W of the variable vehicle speed alarm 19, the above-mentioned alarm setting is automatically set according to the vehicle speed setting device 3. Since the vehicle speed V _W is also raised to the same vehicle speed as the constant speed setting vehicle speed V _C ,
There is no need to reset the alarm setting vehicle speed _VW .
It is possible to eliminate the troublesome operation.

FIG. 3 shows a second embodiment of the present invention (in addition, the second embodiment
The same parts as those in the figures are given the same reference numerals and detailed explanation thereof is omitted), as in the first embodiment above,
Instead of detecting that the constant speed setting vehicle speed V _C is higher than the alarm setting vehicle speed V _W by looking at the output of the second comparison circuit 23 in the variable vehicle speed alarm 19, that is, the alarm activation of the speed alarm buzzer 24, the constant speed setting is performed. The vehicle speed V _C and the alarm setting vehicle speed V _W are directly detected and compared.

That is, in this embodiment, the constant speed setting vehicle speed V _C stored in the first sample hold circuit 9 and the alarm setting vehicle speed V _W stored in the second sample hold circuit 22 are compared, and the constant speed setting vehicle speed V is determined. The third unit outputs a Hi signal when _C is higher than the alarm setting vehicle speed V _W
It receives each output of the comparison circuit 29, the third comparison circuit 29, and the OR circuit 8 of the vehicle speed setting device 3, and outputs a Hi signal to the OR circuit 21 of the variable vehicle speed alarm 19 when both outputs are at Hi level. An AND circuit 30 is provided.

Therefore, in this embodiment, the auto cruise set switch 4 or the auto cruise coast switch 6 changes from the ON state to the OFF state, and the Hi signal is output from the OR circuit 8, and the constant speed setting vehicle speed is sent to the first sample hold circuit 9. Once V _C is memorized,
The stored constant speed setting vehicle speed V _C is compared with the alarm setting vehicle speed V _W stored in advance in the second sample hold circuit 22 of the variable vehicle speed alarm 19 . When the constant speed setting vehicle speed V _C is higher than the alarm setting vehicle speed V _W , a Hi signal is output from the third comparison circuit 29, and a Hi signal is input from the comparison circuit 29 and a Hi signal is input from the OR circuit 8. Due to the input of the signal, the output signal of the AND circuit 30 becomes Hi level, and upon receiving the Hi signal from the AND circuit 30, the second sample hold circuit 22 re-memorizes the vehicle speed at that time as the alarm setting vehicle speed _VW. I decided to do it,
Therefore, the same effects as in the above embodiment can be achieved.

In each of the embodiments described above, when the constant speed setting vehicle speed V _C of the vehicle speed setting device 3 is made higher than the alarm setting vehicle speed V _W of the variable vehicle speed alarm 19, the above-mentioned alarm setting vehicle speed
Although the reset value of V _W was made equal to the constant speed setting vehicle speed V _C , the reference input level of the second comparison circuit 23 in the variable vehicle speed alarm 19, that is, the output level from the second sample and hold circuit 22, was changed. Therefore, the alarm setting vehicle speed V _W may be reset to a higher value than the constant speed setting vehicle speed V _C , and the speed alarm buzzer 24 may be reset when the constant speed setting vehicle speed V _C is changed.
operation is ensured.

Further, in the above embodiment, the variable vehicle speed alarm 19 is used which sets the vehicle speed at the time when the speed alarm set switch 20 is turned ON as the alarm setting vehicle speed _VW . Of course, the present invention can also be applied to a dial-type vehicle in which the alarm setting vehicle speed is set by using the alarm.

Furthermore, in addition to the above-mentioned embodiments, the present invention also includes a configuration using a microcomputer.

(Effects of the invention) As described above, according to the vehicle speed warning device of the present invention, in a vehicle equipped with a constant speed traveling device and a variable vehicle speed alarm, the constant speed setting vehicle speed is set to the alarm setting vehicle speed of the variable vehicle speed alarm. Since the alarm setting vehicle speed is automatically increased when the vehicle speed is higher than the fixed speed setting vehicle speed, there is no need to reset the alarm setting vehicle speed each time the constant speed setting vehicle speed is set in order to avoid alarm activation of the alarm device. This can contribute to improving the operability of the vehicle speed warning device for automobiles.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram of the present invention, FIG. 2 is an electric circuit diagram showing a first embodiment, and FIG. 3 is an electric circuit diagram showing a second embodiment. 1...Vehicle speed sensor, 3...Vehicle speed setting device, 4...
...Auto cruise set switch, 6...Auto cruise coast switch, 9...First sample hold circuit, 10...First comparison circuit, 14...
Actuator, 19...Variable vehicle speed alarm, 20
...Speed alarm set switch, 22...
Second sample and hold circuit, 23...second comparison circuit, 24...buzzer, 27...flip-flop circuit, 29...third comparison circuit.

Claims (1)

[Scope of utility model registration request] Setting of the vehicle speed setting device in a vehicle equipped with a vehicle speed setting device that sets the vehicle speed when the vehicle is running at a constant speed, and a variable vehicle speed alarm that activates an alarm when the vehicle speed becomes higher than a preset arbitrary vehicle speed. constant speed setting vehicle speed detection means for detecting vehicle speed;
An alarm setting vehicle speed detecting means for detecting the set vehicle speed of the variable vehicle speed alarm; a comparing means for comparing the output from the constant speed setting vehicle speed detecting means with the output from the alarm setting vehicle speed detecting means; and an output from the comparing means. and a controller for increasing the set vehicle speed of the variable vehicle speed alarm so that it becomes equal to or higher than the constant speed set vehicle speed when the constant speed set vehicle speed is higher than the alarm set vehicle speed. .