JP4949164B2 - Vehicle speed limiter - Google Patents

Description

  The present invention relates to a vehicle speed limiting device.

  There is known a vehicle speed limiting device that performs vehicle speed limiting control so that the traveling speed of the host vehicle does not exceed the speed limit set by the passenger regardless of the accelerator operation of the passenger (see, for example, Patent Document 1).

The vehicle speed limiting device includes storage means for storing the speed limit set when the vehicle speed limit control was executed last time, and is stored in the storage means when the vehicle speed limit control is restarted by the vehicle speed limit control restart switch. Some are configured to execute vehicle speed limit control based on a speed limit (hereinafter referred to as a previous speed limit).
JP 11-294215 A

  By the way, as shown in FIG. 11, after the vehicle speed limit control is restarted by the vehicle speed limit control restart switch, the occupant sets the current speed limit to be lower than the current vehicle speed and higher than the previous speed limit. You may want to do that. In this case, the occupant changes the speed limit desired this time by operating the speed limit increase / decrease switch.

  If this speed limit increase / decrease switch is configured to increase / decrease by a certain value every time the speed limit increase / decrease switch is operated based on the speed limit before change, the speed limit before change and the current limit If the deviation from the speed is large, the change operation takes some time.

However, since the vehicle speed limit control is being executed while the occupant is changing the speed limit, the traveling speed of the host vehicle is temporarily lower than the desired speed limit during the change operation. After that, useless acceleration / deceleration of accelerating to the changed speed limit may occur.
Such unnecessary acceleration / deceleration not only causes deterioration of fuel consumption, but also has a problem of making the passenger feel uncomfortable.

  Therefore, the present invention provides a vehicle speed limiting device that does not cause unnecessary acceleration / deceleration even if the speed limit is changed.

The vehicle speed limiting device according to the present invention employs the following means in order to solve the above problems.
The invention according to claim 1 is a travel speed detecting means (for example, a vehicle speed sensor 11 in an embodiment to be described later) for detecting the travel speed of the vehicle, and a speed limit storage means (for example, a speed limit set by an occupant). A storage unit 15) in a later-described embodiment, and vehicle speed limiting means (for example, described later) that performs vehicle speed limiting control so that the traveling speed detected by the traveling speed detecting unit is equal to or lower than the limiting speed regardless of the accelerator operation of the occupant. The electronic control device 20) in the embodiment to be performed, vehicle speed limit control interrupting means (for example, an interrupt switch 14 in an embodiment described later) for interrupting the vehicle speed limit control by the occupant's operation, and the vehicle speed limit control is resumed by the occupant's operation. Vehicle speed limit control restarting means (for example, a restart / increase switch 13 in an embodiment described later) and a vehicle speed limiting device (for example, described later) In the vehicle speed limiting device 1) in Example, speed limit increasing means (for example to increase the speed limit by an occupant of the operation, including the resumption / increase switch 13) in Examples described later, the vehicle speed limiting means, the vehicle speed limiting The traveling speed at the time when the vehicle speed limit control is restarted by the control restarting means is greater than the speed limit stored in the speed limit storage means by a predetermined value or more, and the elapsed time from the restart of the vehicle speed limit control by the vehicle speed limit control restarting means is determined. If it is less than the time, the travel speed at the time of restarting the vehicle speed limit control is set as the temporary limit speed, and the vehicle speed limit control based on the temporary limit speed is executed , and the vehicle speed limit control by the vehicle speed limit control restarting unit is restarted. If the speed limit has been increased by the speed limit increasing means within the determination time from the and characterized by extending the determination time That.
The invention according to claim 2 is a travel speed detecting means (for example, a vehicle speed sensor 11 in an embodiment described later) for detecting the travel speed of the vehicle, and a speed limit storage means (for example, a speed limit set by an occupant). A storage unit 15) in a later-described embodiment, and vehicle speed limiting means (for example, described later) that performs vehicle speed limiting control so that the traveling speed detected by the traveling speed detecting unit is equal to or lower than the limiting speed regardless of the accelerator operation of the occupant. The electronic control device 20) in the embodiment to be performed, vehicle speed limit control interrupting means (for example, an interrupt switch 14 in an embodiment to be described later) for interrupting the vehicle speed limit control by the occupant's operation, and the vehicle speed limit control is resumed by the occupant's operation. Vehicle speed limit control restarting means (for example, a restart / increase switch 13 in an embodiment described later) and a vehicle speed limiting device (for example, described later) The vehicle speed limiting device 1) in the embodiment is provided with speed limit reducing means (for example, a setting / decrease switch 12 in the embodiment described later) for reducing the speed limit by the operation of an occupant, and the vehicle speed limiting means is the vehicle speed limiting device. The traveling speed at the time when the vehicle speed limit control is restarted by the control restarting means is greater than the speed limit stored in the speed limit storage means by a predetermined value or more, and the elapsed time from the restart of the vehicle speed limit control by the vehicle speed limit control restarting means is determined. If it is less than the time, the travel speed at the time of restarting the vehicle speed limit control is set as the temporary limit speed, and the vehicle speed limit control based on the temporary limit speed is executed, and the vehicle speed limit control by the vehicle speed limit control restarting unit is restarted. The determination time is shortened when the speed limit is reduced by the speed limit reducing means within the determination time after That.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the vehicle speed limiting means is configured such that when the elapsed time from the restart of the vehicle speed limit control becomes equal to or longer than the determination time, the temporary The vehicle speed limiting control based on the speed limit is terminated, and the vehicle speed limiting control based on the speed limit set by the occupant is executed.

The invention according to a fourth aspect is the invention according to any one of the first to third aspects, wherein the vehicle speed limiting means is detected by the travel speed detecting means instead of the travel speed when the vehicle speed limit control is resumed. The present invention is characterized in that vehicle speed limiting control is executed using the current traveling speed as a temporary speed limit.

According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the determination time is a deviation between the traveling speed detected by the traveling speed detecting means and the speed limit, It is changed based on at least one of acceleration / deceleration of the vehicle, presence / absence of an acceleration / deceleration operation by an occupant, or an acceleration / deceleration operation amount.

According to the first aspect of the present invention, when the speed deviation between the traveling speed of the host vehicle and the speed limit at the time of restarting the speed limit control is greater than a predetermined value, unnecessary addition is performed until the determination time elapses after the restart. Deceleration can be suppressed, and time for changing the speed limit can be secured. Further, by extending the determination time, even when the occupant increases the speed limit, it is possible to prevent the traveling speed of the host vehicle from decreasing below the speed limit that the occupant intends to change this time.
According to the second aspect of the present invention, when the speed deviation between the traveling speed of the host vehicle and the speed limit at the time of restarting the speed limit control is greater than a predetermined value, unnecessary addition is performed until the determination time elapses after the restart. Deceleration can be suppressed, and time for changing the speed limit can be secured. In addition, by shortening the determination time, the traveling speed of the host vehicle can be quickly controlled below the speed limit.

According to the third aspect of the present invention, the traveling speed of the host vehicle can be quickly controlled to be equal to or lower than the speed limit desired by the occupant after the determination time has elapsed.

According to the fourth aspect of the present invention, when the speed deviation between the traveling speed of the host vehicle and the speed limit when the speed limit control is restarted is greater than a predetermined value, the time until the determination time elapses after the restart is substantially increased. Since this is the same as when the vehicle speed limit control is not performed, unnecessary acceleration / deceleration caused by the vehicle speed limit control can be eliminated, and a time for performing the operation for changing the limit speed can be secured.

According to the fifth aspect of the present invention, when the occupant is not willing to decelerate, the deceleration control is moderated by lengthening the determination time, thereby performing the deceleration control without causing the occupant to feel uncomfortable. Can do.

It will be described below with reference to the drawings of FIG. 5 an embodiment of a vehicle speed limiting device according to the invention from FIG.
<Example 1>
The vehicle speed limiting device 1 according to the first embodiment is mounted on a vehicle. As shown in the block diagram of FIG. 1, a vehicle speed sensor (running speed detection means) 11, a setting / decrease switch (limit speed reduction means) 12, a restart / Increase switch (vehicle speed limit control restarting means, limit speed increasing means) 13, interrupt switch (vehicle speed limit control interrupt means) 14, storage unit (limit speed storage means) 15, acceleration device 16, deceleration device 17, A speed limit display device 18 and an electronic control device (vehicle speed limiting means) 20 are provided.
The vehicle speed sensor 11 detects the traveling speed of the host vehicle and outputs an output signal corresponding to the detection result to the electronic control device 20.

The setting / decrease switch 12 serves both as a speed limit setting switch and a switch for decreasing the speed limit.
When the driver (occupant) operates the setting / decreasing switch 12 when the vehicle speed limit control is not being executed, the output signal is output to the electronic control device 20, and the electronic control device 20 travels at that point in time. Is set as the speed limit, and the vehicle speed limit control is executed based on the set speed limit.
On the other hand, when the driver operates the setting / decreasing switch 12 while the vehicle speed limiting control is being executed, the output signal is output to the electronic control device 20, and the electronic control device 20 performs one setting / decreasing switch 12 once. A process of decreasing the speed limit by a certain value (for example, 1 km / h) with respect to the operation is executed.

  The interruption switch 14 is a switch that is operated when stopping the vehicle speed restriction control that is being executed and returning to traveling without vehicle speed restriction. When the driver operates the interruption switch 14, the output signal is transmitted to the electronic control unit 20. Is output.

The restart / increase switch 13 serves as both a vehicle speed limit control restart switch and a switch for increasing the limit speed.
When the driver operates the restart / increase switch 13 after stopping the vehicle speed limiting control by the interruption switch 14, the output signal is output to the electronic control device 20, and before the vehicle speed limiting control is stopped in the electronic control device 20. The speed limit set in (1) is set again as the speed limit, and the vehicle speed limit control is executed based on the set speed limit.

On the other hand, when the driver operates the resume / increase switch 13 during execution of the vehicle speed limit control, the output signal is output to the electronic control device 20, and the electronic control device 20 responds to one operation of the resume / increase switch 13. A process of increasing the speed limit by a certain value (for example, 1 km / h) is executed.
In other words, the driver can set the speed limit to a desired value by operating the setting / decreasing switch 12 and the resuming / increasing switch 13.

  The storage unit 15 stores the latest speed limit set in the electronic control unit 20 based on the operation of the setting / decreasing switch 12 and the resuming / increasing switch 13. When the vehicle speed limit control is restarted by operating the restart / increase switch 13, the speed limit stored in the storage unit 15 is read and output to the electronic control unit 20 as the speed limit when the vehicle speed limit control is restarted. .

The electronic control device 20 includes a speed limit setting unit 21, a determination time setting unit 22, and a vehicle speed limit control unit 23.
The speed limit setting unit 21 sets the speed limit based on an input signal from the setting / decrease switch 12, the restart / increase switch 13, the vehicle speed sensor 11, the storage unit 15, and the like.
The determination time setting unit 22 sets and changes a determination time to be described later when the vehicle speed limit control is resumed.

  The vehicle speed limit control unit 23 is based on input signals from the vehicle speed sensor 11, the limit speed setting unit 21, and the determination time setting unit 22, regardless of the driver's accelerator operation. Vehicle speed limit control is performed so that the traveling speed is equal to or lower than the speed limit set in the speed limit setting unit 21.

More specifically, the vehicle speed limit control unit 23 drives the engine (not shown) by the output limit control so that the traveling speed of the host vehicle does not exceed the limit speed when the driver depresses the accelerator pedal. When control is performed or when the traveling speed of the host vehicle exceeds the speed limit, drive power control (including zero drive power) is performed by engine output limit control. In addition, you may perform control which decelerates the own vehicle by performing braking control by brake pressure control etc. as needed.
The acceleration device 16 is composed of, for example, a fuel supply device to the engine, and the deceleration device 17 is composed of, for example, a brake device, etc., both of which are controlled in accordance with a command signal from the vehicle speed limit control unit 23 of the electronic control device 20. .

  The speed limit display device 18 displays the set speed limit based on the input signal from the electronic control device 20. The speed limit display device 18 may be arranged side by side with a speedometer, for example, as an independent display device, or may be provided along with the speedometer, and any display method of digital or analog can be adopted. is there.

As described above, in the vehicle speed limiting device 1, when the restart / increase switch 13 is operated to restart the vehicle speed limiting control, the previous speed limit stored in the storage unit 15 (in other words, the previous vehicle speed limiting control). The speed limit immediately before interrupting is set as the current speed limit.
Immediately after resuming the vehicle speed limit control by operating the resume / increase switch 13, the driver wants to change the speed limit to a speed that is smaller than the current travel speed of the host vehicle and greater than the previous speed limit. May be desired. At this time, the driver repeats the operation of the resume / increase switch 13 until the speed limit displayed on the speed limit display device 18 matches the desired speed limit.

  Conventionally, even when an operation to increase the speed limit is performed as described above, the vehicle speed limit control is executed based on the speed limit being changed. There is a case where unnecessary acceleration / deceleration occurs in which the speed decreases to a speed limit after the change and then accelerates to the speed limit after the change.

Therefore, in this vehicle speed limiting device 1, the vehicle speed (traveling speed) of the host vehicle detected by the vehicle speed sensor 11 when the vehicle speed limiting control is resumed is a predetermined value or more than the previous speed limit stored in the storage unit 15. If it is large (for example, 5 km / h or more), the control (hereinafter referred to as deceleration) that suppresses deceleration of the host vehicle until a predetermined time (hereinafter referred to as determination time) elapses after the vehicle speed limit control is resumed. When the driver operates the restart / increase switch 13 to increase the speed limit, the traveling speed of the host vehicle is lower than the speed limit that the driver intends to change this time. To prevent unnecessary acceleration / deceleration. Further, by providing a determination time, it is possible to secure a time for changing the speed limit.
Then, after the determination time has elapsed after resuming the vehicle speed limiting control, the traveling speed of the host vehicle is quickly made equal to or lower than the changed speed limit by returning to the normal vehicle speed limiting control.

As the speed reduction suppression control is the first of the following Ru third three control methods there may be employed any of the control methods of the control method and the second control method of the first Example 1 .
As shown in FIG. 2, the first control method is detected by the vehicle speed sensor 11 when the vehicle speed limit control is resumed until the determination time elapses after the restart / increase switch 13 is operated to restart the vehicle speed limit control. The vehicle speed (traveling speed) of the subject vehicle is set as a temporary speed limit, and vehicle speed limit control is performed based on the temporary speed limit.

  As shown in FIG. 3, the second control method is detected by the vehicle speed sensor 11 every moment until the determination time elapses after the restart / increase switch 13 is operated to restart the vehicle speed limit control. The vehicle speed (traveling speed) of the host vehicle is set as a temporary limit speed, and vehicle speed limit control is performed based on the temporary limit speed. When the speed limit is set in this way, it is substantially the same as not performing the limit control.

As shown in FIG. 4, the third control method is more effective than the normal deceleration in the vehicle speed limit control until the determination time elapses after the restart / increase switch 13 is operated to restart the vehicle speed limit control. Car speed limit control is performed with a small deceleration. For example, when the vehicle speed of the host vehicle is greater than the previous speed limit, deceleration control is performed with a deceleration of 0.1 G, for example, during normal control, whereas deceleration is controlled, for example, 0.025 G with deceleration suppression control. Take control. These numerical values of deceleration (0.1G, 0.025G) are merely examples.
Further, when the vehicle speed limit control is performed with a deceleration smaller than the normal deceleration, a temporary limit speed may be calculated based on the small deceleration, and the vehicle speed limit control may be performed based on the temporary limit speed. .

The deceleration at the time of the deceleration suppression control is the deviation between the vehicle speed (traveling speed) of the host vehicle detected by the vehicle speed sensor 11 and the previous speed limit, the acceleration / deceleration of the host vehicle, or the acceleration / deceleration operation by the driver. It is possible to change based on at least one of the presence or absence of acceleration or the amount of acceleration / deceleration operation.
For example, the deceleration is reduced as the deviation between the traveling speed of the host vehicle and the previous speed limit increases.
Further, when the host vehicle is accelerating, the deceleration is reduced, and when the host vehicle is decelerating, the deceleration is the deceleration during normal control.
Further, when an acceleration operation by the driver (for example, depression of an accelerator pedal) is detected, the deceleration is decreased, and the deceleration is decreased as the acceleration operation amount is increased. On the other hand, when a deceleration operation by the driver (for example, depression of the accelerator pedal or depression of the brake pedal) is detected, the deceleration is set as the deceleration during normal control.

  This is due to the following reason. During the deceleration operation by the driver (or during deceleration of the vehicle), it is estimated that the driver has a willingness to decelerate, so the driver does not feel uncomfortable even with the deceleration control by normal deceleration. On the other hand, during acceleration operation by the driver (or during vehicle acceleration), it is unlikely that the driver is willing to decelerate. In this case, the deceleration control during the judgment time is made gentle (decelerating the deceleration small). Thus, deceleration control is performed while preventing the driver from feeling uncomfortable.

The determination time (in other words, the execution period of deceleration suppression control) is the deviation between the vehicle speed (traveling speed) of the host vehicle detected by the vehicle speed sensor 11 and the previous speed limit, or the acceleration / deceleration of the host vehicle, or It can be changed based on at least one of the presence / absence of acceleration / deceleration operation by the driver and the amount of acceleration / deceleration operation.
For example, the determination time is lengthened as the deviation between the traveling speed of the host vehicle and the previous speed limit increases.
Further, the determination time is lengthened when the host vehicle is accelerating, and the determination time is shortened when the host vehicle is decelerating.
Further, when an acceleration operation by the driver (for example, depression of an accelerator pedal) is detected, the determination time is lengthened, and the determination time is lengthened as the acceleration operation amount is large. On the other hand, when a deceleration operation by the driver (for example, the accelerator pedal is not depressed or the brake pedal is depressed) is detected, the determination time is shortened.

  This is due to the following reason. During the deceleration operation by the driver (or during deceleration of the vehicle), it is estimated that the driver has a willingness to decelerate, so the driver does not feel uncomfortable even with normal deceleration control. On the other hand, during acceleration operation by the driver (or during acceleration of the vehicle), it is unlikely that the driver has a willingness to decelerate. Deceleration control is performed while making the driver longer, thereby preventing the driver from feeling uncomfortable.

  Further, within the determination time after the vehicle speed limit control is restarted by operating the resume / increase switch 13 by the driver, the driver operates the restart / increase switch 13 again to increase the speed limit. In such a case, the determination time may be extended. By extending the determination time in this way, even when the driver increases the speed limit, it is possible to reliably prevent the vehicle speed of the host vehicle from dropping below the speed limit that the driver is about to change this time. it can.

  Further, within the determination time after the vehicle speed limit control is restarted by operating the resume / increase switch 13 by the driver, the driver operates the setting / decrease switch 12 to reduce the speed limit. In such a case, the determination time may be shortened. The fact that the driver operates the setting / decrease switch 12 to reduce the speed limit means that the driver wants to limit the vehicle speed of the host vehicle to a lower value. Therefore, it is not necessary to prevent the speed from becoming lower than the speed limit to be changed this time, and therefore the determination time can be shortened. Further, by shortening the determination time, the vehicle speed of the host vehicle can be quickly controlled below the speed limit.

  Next, the vehicle speed restriction control will be described with reference to the flowchart of FIG. The vehicle speed limit control routine shown in the flowchart of FIG. 5 is repeatedly executed by the electronic control device 20 at regular intervals.

First, in step S101, it is determined whether or not the vehicle speed limit control is restarted by operating the restart / increase switch 13.
When the determination result in step S101 is “YES”, the process proceeds to step S102, and the vehicle speed of the host vehicle detected by the vehicle speed sensor 11 at the time of restart (that is, the travel speed of the host vehicle when the vehicle speed limit control is restarted) Vs. A threshold A (for example, 5 km) in which a speed deviation ΔV (ΔV = Vs−Lr) with respect to a speed limit (that is, speed limit at the end of the previous vehicle speed limit control) Lr read and set from the storage unit 15 at the time of restart is set in advance. / H) is determined.

If the determination result in step S102 is “NO” (ΔV ≦ A), it is not necessary to perform deceleration suppression control, so the process proceeds to step S103, the determination time T is set to zero, and the process proceeds to step S108.
If the determination result in step S102 is “YES” (ΔV> A), the process proceeds to step S104 to determine whether the traveling state of the host vehicle is a deceleration state, a constant speed state, or an acceleration state.

If it is determined in step S104 that the host vehicle is decelerating, the process proceeds to step S105, the first determination time ts (for example, 1 second) is set as the determination time T, and the process proceeds to step S108.
If it is determined in step S104 that the host vehicle is in a constant speed state, the process proceeds to step S106, a second determination time tm (for example, 2 seconds) is set as the determination time T, and the process proceeds to step S108.
If it is determined in step S104 that the host vehicle is in an accelerated state, the process proceeds to step S107, a third determination time tl (for example, 4 seconds) is set as the determination time T, and the process proceeds to step S108.

  Here, the second determination time tm is set to a value larger than the first determination time ts, and the third determination time tl is set to a value larger than the second determination time tm. As described above, when the driver has the intention to decelerate, the driver does not feel uncomfortable even if the deceleration control is not moderated. This is because the driver feels uncomfortable unless the deceleration control is slowed down.

On the other hand, if the determination result in step S101 is “NO” (not restart), the process proceeds to step S108 without executing the processes in steps S102 to S107.
Note that an affirmative (YES) determination is made in step S101 only when the vehicle speed limit control routine shown in FIG. 5 is executed for the first time, even when the vehicle speed limit control is restarted by the restart / increase switch 13. In the second and subsequent executions of the vehicle speed limit control routine shown in FIG. 5, a negative (NO) determination is made in step S101. In other words, the processes in steps S102 to S107 are executed only when the vehicle speed restriction control routine shown in FIG. 5 is executed for the first time.

In step S108, it is determined whether the determination time T is greater than zero.
If the determination result in step S108 is “YES” (T> 0), the process proceeds to step S109, whether or not the speed limit has been changed, that is, whether the setting / decreasing switch 12 or the resuming / increasing switch 13 has been operated. Determine whether or not.

If it is determined in step S109 that the speed limit is decreasing, the process proceeds to step S110 and the determination time T is set to zero. As described above, the driver is trying to set the current speed limit to a value lower than the previous speed limit, so there is no need to prevent the vehicle speed of the host vehicle from dropping below the current speed limit. Therefore, there is no problem even if the determination time is shortened, so that the vehicle speed of the host vehicle is quickly controlled to be equal to or lower than the current speed limit.
Then, the process proceeds from step S110 to step S111, the normal vehicle speed limit control is executed, and the execution of this routine is once ended. Here, the normal vehicle speed limit control refers to vehicle speed limit control based on a limit speed (limit speed before change or limit speed after change) set by the driver.

If it is determined in step S109 that the speed limit is increased, the process proceeds to step S112, and the determination time T is extended by adding a predetermined extension time ta (for example, 1 second) to the determination time T. . This process of extending the determination time T is repeatedly executed while the restart / increase switch 13 is being operated.
And it progresses to step S113 from step S112, deceleration suppression control is performed, and execution of this routine is once complete | finished. The deceleration suppression control includes the above-described first control method (a control method using the vehicle speed of the host vehicle when the limit control is resumed as a temporary limit speed) and second control method (the current vehicle speed of the host vehicle is set as the temporary limit speed). it may be any of the control methods and control methods of).

If it is determined in step S109 that the speed limit has not been changed, the process proceeds to step S114, and a value obtained by subtracting a fixed time td (for example, 0.1 second) from the determination time T is set as the determination time T.
And it progresses to step S113 from step S114, deceleration suppression control is performed, and execution of this routine is once complete | finished.
If the determination result in step S108 is “NO” (T ≦ 0), the process proceeds to step S111, normal vehicle speed limit control is executed, and the execution of this routine is temporarily ended.

< Reference Example 1 >
Next, a reference example 1 of art related to the vehicle speed limiting device according to the present invention with reference to FIGS.
In the first embodiment described above, in order to prevent the traveling speed of the host vehicle from dropping below the speed limit to be changed this time while performing an operation to increase the speed limit immediately after restarting the vehicle speed limit control, the determination is made. Although the time and deceleration suppression control are employed, in the first reference example , the setting / decrease switch 12 and the restart / increase switch 13 function at the time of changing the speed limit can be switched to achieve the speed limit desired by the driver. The change can be made in an extremely short time, thereby preventing unnecessary acceleration / deceleration.

The configuration of the vehicle speed limiting device 1 in Reference Example 1 is shown in FIG. The vehicle speed limiting control 1 in the reference example 1 is different from the vehicle speed limiting device 1 of the first embodiment in that the electronic control device 20 does not include the determination time setting unit 22, the setting / decrease switch 12, and the restart / increase. The function of the switch 13 is otherwise the same as that of the vehicle speed limiting device 1 of the first embodiment.

Hereinafter, functions of the setting / decreasing switch 12 and the resuming / increasing switch 13 will be described.
Setting / decrease switch 12 in Reference Example 1, and the speed limit setting switch, although that also serves as a switch for reducing the speed limit is the same as in Example 1, in Example 1, for reducing the speed limit When operating as a switch, the change value is made different according to the magnitude of the speed deviation between the traveling speed of the host vehicle at the time of operation and the speed limit before the change.

  More specifically, when the setting / decrease switch 12 is operated as a speed limit reduction switch, if the deviation between the traveling speed of the host vehicle and the speed limit before the change is less than a predetermined value, a single operation is performed. If the deviation between the traveling speed of the host vehicle and the speed limit before the change is equal to or greater than the predetermined value, the traveling speed of the host vehicle when the setting / decreasing switch 12 is operated is reduced. Change the speed limit to approximately the same value.

The speed limit change control of the setting / decrease switch 12 will be described with reference to the flowchart of FIG.
First, in step S201, it is determined whether or not the operation of the setting / decrease switch 12 is an operation during vehicle speed limit control.
If the determination result in step S201 is “NO”, the setting / decrease switch 12 is operated as a speed limit setting switch, and thus the execution of this routine is temporarily terminated.

If the determination result in step S201 is “YES”, the process proceeds to step S202, in which the speed deviation ΔV between the current vehicle speed (actual vehicle speed) V detected by the vehicle speed sensor 11 and the speed limit VLim before the change. It is determined whether (ΔV = V−VLim) is larger than a preset threshold A (for example, 5 km / h).
If the determination result in step S202 is “YES” (ΔV> A), the process proceeds to step S203, and a value obtained by subtracting a predetermined value Va (for example, 1 km / h) from the current vehicle speed V is set as the speed limit VLim. (VLim = V−Va), the execution of this routine is once terminated.
On the other hand, if the determination result in step S202 is “NO” (ΔV ≦ A), the process proceeds to step S204, and a value obtained by subtracting a constant value (for example, 1 km / h) from the speed limit VLim before the change is set as the speed limit VLim. (VLim = VLim−1 km / h), and the execution of this routine is temporarily terminated.

Also, resume / increase switch 13 in the first reference example, the vehicle speed limit control resume switch, although that also serves as a switch for increasing the speed limit is the same as in Example 1, in Example 1, the speed limit When operating as an increase switch, the change value is made different according to the magnitude of the speed deviation between the traveling speed of the host vehicle at the time of operation and the speed limit before the change.

  More specifically, when the restart / increase switch 13 is operated as a speed limit increase switch, if the deviation between the traveling speed of the host vehicle and the speed limit before the change is less than a predetermined value, the operation is performed once. The speed limit is increased by a certain value, and when the deviation between the travel speed of the host vehicle and the speed limit before the change is not less than the predetermined value, the travel speed of the host vehicle when the restart / increase switch 13 is operated Change the speed limit to approximately the same value.

The speed limit change control of the restart / increase switch 13 will be described with reference to the flowchart of FIG.
First, in step S301, it is determined whether or not the operation of the resume / increase switch 13 is an operation during the vehicle speed limit control.
If the determination result in step S301 is “NO”, the restart / increase switch 13 is operated as a vehicle speed limit control restart switch, and thus the execution of this routine is temporarily terminated.

If the determination result in step S301 is “YES”, the process proceeds to step S302, in which the speed deviation ΔV between the current vehicle speed (actual vehicle speed) V detected by the vehicle speed sensor 11 and the speed limit VLim before the change. It is determined whether (ΔV = V−VLim) is larger than a preset threshold A (for example, 5 km / h).
If the determination result in step S302 is “YES” (ΔV> A), the process proceeds to step S303, and a value obtained by adding a predetermined value Va (for example, 1 km / h) to the current vehicle speed V is set as the speed limit VLim. (VLim = V + Va), the execution of this routine is once terminated.
On the other hand, if the determination result in step S302 is “NO” (ΔV ≦ A), the process proceeds to step S304, and a value obtained by adding a constant value (for example, 1 km / h) to the speed limit VLim before the change is the speed limit VLim. (VLim = VLim + 1 km / h), and the execution of this routine is temporarily terminated.

  FIG. 9 shows how the speed limit changes when the restart / increase switch 13 is operated as a speed limit increase switch when the deviation between the traveling speed V of the host vehicle and the speed limit VLim before the change is greater than or equal to the threshold A. Is shown.

  In this way, the speed limit desired by the driver can be changed in a very short time, thereby preventing unnecessary acceleration / deceleration. As a result, the driver does not have to feel uncomfortable and the fuel efficiency is improved.

< Reference Example 2 >
Next, a reference example 2 of a technique related to the vehicle speed limiting device according to the present invention will be described with reference to FIG.
In the reference example 1 described above, the function at the time of changing the speed limit of the setting / decreasing switch 12 and the resuming / increasing switch 13 can be switched. However, in the reference example 2 , the functions of the setting / decreasing switch 12 and the resuming / increasing switch 13 are made possible. Is the same as in the case of the first embodiment, and instead, a switch for changing the speed limit is provided separately so that the speed can be changed to the speed limit desired by the driver in a very short time.

The configuration of the vehicle speed limiting device 1 in Reference Example 2 is shown in FIG. The vehicle speed limiting control 1 in the reference example 2 is different from the vehicle speed limiting device 1 of the first embodiment in that the electronic control device 20 does not include the determination time setting unit 22 and a speed limit changing switch 19. Other configurations are the same as those of the vehicle speed limiting device 1 of the first embodiment.

In Reference Example 2 , when the speed limit change switch 19 is operated after the speed limit control is restarted by operating the restart / increase switch 13, a value substantially equal to the vehicle speed of the host vehicle detected by the vehicle speed sensor 11 during this operation. The speed limit can be set.

  In this way, the speed limit desired by the driver can be changed in a very short time, thereby preventing unnecessary acceleration / deceleration. As a result, the driver does not have to feel uncomfortable and the fuel efficiency is improved.

  After changing the speed limit by operating the speed limit changing switch 19, the speed limit can be finely adjusted by operating the setting / decreasing switch 12 or the restart / increasing switch 13.

It is a block diagram in Example 1 of the vehicle speed limiting device which concerns on this invention. 3 is a time chart illustrating an example of deceleration suppression control in the vehicle speed limiting device according to the first embodiment. 6 is a time chart illustrating another example of deceleration suppression control in the vehicle speed limiting device according to the first embodiment. 6 is a time chart illustrating another example of deceleration suppression control in the vehicle speed limiting device according to the first embodiment. 3 is a flowchart of vehicle speed restriction control in the vehicle speed restriction device of the first embodiment. Is a block diagram definitive in speed limiting equipment of Example 1 of the related art to the present invention. 4 is a flowchart (No. 1) of speed limit change control in the vehicle speed limiting device of the reference example 1 ; 4 is a flowchart ( No. 2) of speed limit change control in the vehicle speed limiting device of Reference Example 1 ; 4 is a time chart showing an example of speed limit change control in the vehicle speed limiting device of Reference Example 1 ; Is a block diagram definitive in speed limiting equipment of Example 2 of the related art to the present invention. It is a time chart of the vehicle speed restriction control in the conventional vehicle speed restriction device.

Explanation of symbols

1 Vehicle speed limiter 11 Vehicle speed sensor (travel speed detection means)
12 Setting / decrease switch (speed limit changing means, speed limit reducing means)
13 restart / increase switch (vehicle speed limit control restart means, speed limit change means, speed limit increase means)
14 Interruption switch (vehicle speed limit control interruption means)
15 Storage unit (speed limit storage means)
19 Speed limit change switch (Speed limit change means)
20 Electronic control device (vehicle speed limiting means)

Claims (5)

Traveling speed detection means for detecting the traveling speed of the vehicle;
Speed limit storage means for storing the speed limit set by the occupant;
Vehicle speed limiting means for performing vehicle speed limiting control so that the traveling speed detected by the traveling speed detecting means is less than or equal to the speed limit regardless of the occupant's accelerator operation;
Vehicle speed limit control interrupting means for interrupting the vehicle speed limit control by an occupant operation;
Vehicle speed limit control restarting means for restarting the vehicle speed limit control by an occupant's operation;
In a vehicle speed limiting device equipped with
Provided with a speed limit increasing means for increasing the speed limit by an occupant's operation,
The vehicle speed limiting means is configured such that the traveling speed at the time when the vehicle speed restriction control is restarted by the vehicle speed limit control restarting means is greater than a speed limit stored in the speed limit storage means by a predetermined value or more, and the vehicle speed by the vehicle speed limit control restarting means. when the elapsed time from limiting control resumption is less than the determination time, the traveling speed of the vehicle speed at the limit control resuming the temporary speed limit, and executes the vehicle speed limiting control based on the speed limit of the temporary, the vehicle speed limiting control A vehicle speed limiting device that extends the determination time when the speed limit is increased by the speed limit increasing means within the determination time after the restart of the vehicle speed limit control by the restarting means . Traveling speed detection means for detecting the traveling speed of the vehicle;
Speed limit storage means for storing the speed limit set by the occupant;
Vehicle speed limiting means for performing vehicle speed limiting control so that the traveling speed detected by the traveling speed detecting means is less than or equal to the speed limit regardless of the occupant's accelerator operation;
Vehicle speed limit control interrupting means for interrupting the vehicle speed limit control by an occupant operation;
Vehicle speed limit control restarting means for restarting the vehicle speed limit control by an occupant's operation;
In a vehicle speed limiting device equipped with
A speed reduction means for reducing the speed limit by an occupant's operation,
The vehicle speed limiting means is configured such that the traveling speed at the time when the vehicle speed restriction control is restarted by the vehicle speed limit control restarting means is greater than a speed limit stored in the speed limit storage means by a predetermined value or more, and the vehicle speed by the vehicle speed limit control restarting means. When the elapsed time from the restart of the limit control is less than the determination time, the travel speed at the restart of the vehicle speed limit control is set as a temporary limit speed, and the vehicle speed limit control based on the temporary limit speed is executed and the vehicle speed limit control is performed. A vehicle speed limiting device that shortens the determination time when the speed limit is reduced by the speed limit reducing means within the determination time after the vehicle speed limit control by the restarting means is restarted . The vehicle speed limiting means terminates the vehicle speed limiting control based on the temporary speed limit when the elapsed time from the restart of the vehicle speed limiting control is equal to or longer than the determination time, and the vehicle speed based on the speed limit set by the occupant. The vehicle speed limiting device according to claim 1 or 2, wherein limiting control is executed. 2. The vehicle speed limiting means executes vehicle speed limiting control using the current traveling speed detected by the traveling speed detecting means instead of the traveling speed when the vehicle speed limiting control is resumed as a temporary limiting speed. The vehicle speed limiting device according to any one of claims 3 to 4 . The determination time is at least one of the deviation between the traveling speed and the speed limit detected by the traveling speed detecting means, the acceleration / deceleration of the own vehicle, the presence / absence of an acceleration / deceleration operation by an occupant, or the acceleration / deceleration operation amount. The vehicle speed limiting device according to any one of claims 1 to 4, wherein the vehicle speed limiting device is changed based on the vehicle speed.

Images