JP4876040B2 - 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).
Further, in the vehicle speed limiting device, generally, when the state where the vehicle speed exceeds the speed limit continues for a predetermined time, the passenger is notified of the excessive speed.
JP 11-294215 A

  By the way, as shown in FIG. 5, after the vehicle speed limit control is resumed by the vehicle speed limit control restart switch, the occupant makes the current speed limit smaller than the current vehicle speed and larger than the previous speed limit. You may want to do that. In such a case, if the timing for the occupant to change the speed limit is delayed, the vehicle speed limit control is executed based on the speed limit before the change during that time. In some cases, 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. This unnecessary acceleration / deceleration not only deteriorates fuel consumption but also makes the passenger feel uncomfortable.

  On the other hand, in the past, unless the state where the vehicle speed exceeds the speed limit continues for a predetermined time, the occupant is not notified of overspeed, so in such a case, it is delayed that the occupant notices the delay in the change operation, and as a result, May be delayed, resulting in the above-described state.

  In view of this, the present invention provides a vehicle speed limiting device that can promptly notify an overspeed when the speed is over at the time of restarting the vehicle speed limiting control.

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 detecting the travel speed of the vehicle (for example, a vehicle speed sensor 11 in an embodiment to be described later), and a speed limit that can be changed by an occupant's operation and the speed limit is set. Speed setting means (for example, a setting / decrease switch 12, a restart / increase switch 13, a speed limit setting unit 21 in an embodiment to be described later), and a speed limit storage means for storing the speed limit set by the speed limit setting means ( For example, a storage unit 15) in an embodiment to be described later, and a vehicle speed limiting unit (for example, a vehicle speed limiting unit) that performs a vehicle speed limiting control so that the traveling speed detected by the traveling speed detecting unit is equal to or less than the limiting speed regardless of the occupant's accelerator operation. a speed limiting control unit 23) in examples described later, overspeed informing means for informing the overspeed to multiply membered (e.g., examples below 19) , 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 vehicle speed limit control for restarting the vehicle speed limit control by the occupant's operation. resuming means (e.g., resume / increase switch 13 in the embodiment) and, at the time of the vehicle speed limiting control resumption by prior Symbol speed limiting control resuming means, and the traveling speed when the vehicle speed limiting control resumption greater than the speed limit When the speed deviation is greater than or equal to a predetermined value, the speed excess notifying means is operated regardless of the duration of the state where the speed deviation is greater than or equal to the predetermined value, and the vehicle speed restriction control is performed except when the vehicle speed restriction control is resumed. When running, a state in which the traveling speed detected by the traveling speed detecting means is greater than the limit speed and the speed deviation is equal to or greater than a predetermined value. Is provided with a control means (for example, an electronic control device 20 in an embodiment to be described later) that activates the overspeed notification means when it continues for a determination time or longer .

The invention according to claim 2 is a travel speed detecting means for detecting the travel speed of the vehicle (for example, a vehicle speed sensor 11 in an embodiment to be described later), and a speed limit that can be changed by an occupant's operation and the speed limit is set. Speed setting means (for example, a setting / decrease switch 12, a restart / increase switch 13, a speed limit setting unit 21 in an embodiment to be described later), and a speed limit storage means for storing the speed limit set by the speed limit setting means ( For example, a storage unit 15) in an embodiment to be described later, and a vehicle speed limiting unit (for example, a vehicle speed limiting unit) that performs a vehicle speed limiting control so that the traveling speed detected by the traveling speed detecting unit is equal to or less than the limiting speed regardless of the occupant's accelerator operation. a speed limiting control unit 23) in examples described later, overspeed informing means for informing the overspeed to multiply membered (e.g., examples below 19) , 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 vehicle speed limit control for restarting the vehicle speed limit control by the occupant's operation. The determination time is a state in which the traveling speed detected by the restarting means (for example, the restart / increase switch 13 in the embodiment described later) and the traveling speed detecting means is greater than the limit speed and the speed deviation is equal to or greater than a predetermined value. It actuates the overspeed informing means when continuous or more and the determination time, when the vehicle speed limiting control resumption by said speed limiting control resuming means, the vehicle speed restriction control be other than when the vehicle speed limiting control resumes execution And a control means (for example, an electronic control device 20 in an embodiment to be described later) that is shorter than the time when the operation is performed .

  According to the first and second aspects of the present invention, when the driver intends to change the speed limit when resuming the vehicle speed limit control, a quick overspeed notification is sent to the driver to change the speed limit. It can be expected to speed up the speed limit change operation by the driver.

Hereinafter, an embodiment of a vehicle speed limiting device according to the present invention will be described with reference to the drawings of FIGS.
The vehicle speed limiting device 1 in this embodiment is mounted on a vehicle. As shown in the block diagram of FIG. 1, a vehicle speed sensor (traveling speed detecting means) 11, a setting / decreasing switch 12, and a restart / increasing switch (vehicle speed limiting control). Resumption means) 13, interruption switch (vehicle speed limit control interruption means) 14, storage unit (restriction speed storage means) 15, acceleration device 16, deceleration device 17, speed limit display device 18, notification device (speed) And an electronic control unit (vehicle speed limiting means, speed excess notification means) 20.
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 speed excess determination 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 overspeed determination unit 22 determines whether or not to report overspeed according to whether or not a state in which the vehicle speed of the host vehicle exceeds the speed limit over a predetermined value continues for a determination time or more, and determines that the overspeed determination should be performed A notification command is output to the notification device. In the vehicle speed limiting device 1, the determination time is changed between when the vehicle speed limiting control is restarted and when the vehicle speed limiting control is being executed (hereinafter referred to as normal time), and whether or not an overspeed notification can be made. Judgment. The overspeed notification determination process will be described in detail later.

  The vehicle speed limit control unit 23 determines the travel speed of the host vehicle detected by the vehicle speed sensor 11 based on the input signal from the vehicle speed sensor 11 and the speed limit setting unit 21 regardless of the driver's accelerator operation. Vehicle speed limit control is performed so that the speed is less than or equal to the speed limit set in the 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.

  The notification device 19 is configured by, for example, a speaker or a display device, and the notification command input from the electronic control device 20 when the overspeed determination unit 22 of the electronic control device 20 determines that the overspeed notification should be given. Based on this, an alarm sound is emitted from the speaker or an alarm is displayed on the display device.

  Next, the overspeed notification determination process executed in the overspeed determination unit 22 will be described with reference to the flowchart of FIG. The notification determination processing routine shown in the flowchart of FIG. 2 is repeatedly executed by the electronic control device 20 at regular intervals.

First, in step S101, it is determined whether vehicle speed restriction control is being executed.
If the determination result in step S101 is “NO” (not executed), the execution of this routine is temporarily ended.
When the determination result in step S101 is “YES” (during execution), the process proceeds to step S102 to determine whether or not the vehicle speed limit control is being resumed. The time when the vehicle speed limit control is resumed means the time when the vehicle speed limit control is resumed by operating the resume / increase switch 13.

  If the determination result in step S102 is “YES” (when restarting), the process proceeds to step S103, and the vehicle speed of the host vehicle detected by the vehicle speed sensor 11 at the time of restarting (that is, traveling of the host vehicle when the vehicle speed limit control is restarted). The speed deviation ΔV (ΔV = Vs−Lr) between the speed) Vs and the speed limit (that is, the previous speed limit) Lr read and set from the storage unit 15 at the time of resumption is a preset threshold A (for example, 5 km / h) It is determined whether it is larger than.

If the determination result in step S103 is “YES” (ΔV> A), the process proceeds to step S104 to notify the overspeed, and the execution of this routine is temporarily terminated.
If the determination result in step S103 is “NO” (ΔV ≦ A), it is not necessary to notify the overspeed, so the execution of this routine is temporarily terminated.

  On the other hand, if the determination result in step S102 is “NO” (when not restarted), the process proceeds to step S105, where the speed deviation ΔV between the current vehicle speed V of the host vehicle detected by the vehicle speed sensor 11 and the limit speed VLim. It is determined whether or not a state in which (ΔV = V−VLim) is greater than the threshold value A continues for a determination time T (for example, 2 seconds).

  When the determination result in step S105 is “YES” (continue for the determination time T or longer), the process proceeds to step S104 to notify the overspeed, and the execution of this routine is once ended.

  On the other hand, when the determination result in step S105 is “NO”, that is, the duration time in which the speed deviation ΔV is smaller than the threshold A or the speed deviation ΔV is larger than the threshold A is the determination time T. If it is smaller than this, since there is no need to notify the overspeed, the execution of this routine is temporarily terminated.

As described above, when the overspeed notification determination is performed, the overspeed notification is performed when the state in which the speed deviation ΔV is greater than the threshold A continues for the determination time T or more in a normal time not when the vehicle speed limit control is resumed. However, as shown in FIG. 3, when the speed deviation ΔV between the traveling speed of the host vehicle and the speed limit is greater than or equal to a predetermined value when the speed limit control is resumed, the vehicle speed limit control is resumed without waiting for the determination time to elapse. Immediately, the overspeed notification is made.
Therefore, when the driver intends to change the speed limit when resuming the vehicle speed limit control, a prompt speed over notification prompts the driver to change the speed limit and speeds up the speed limit change operation by the driver. I can expect that.
When the speed limit change operation at the time of restarting the vehicle speed limit control is accelerated, unnecessary acceleration / deceleration in which the traveling speed of the host vehicle decreases below the speed limit after the change and then accelerates to the speed limit after the change again is performed. It can be prevented from occurring.

  Next, another embodiment of the overspeed notification determination process will be described with reference to the flowchart of FIG. The notification determination processing routine shown in the flowchart of FIG. 4 is repeatedly executed by the electronic control device 20 at regular intervals.

First, in step S201, it is determined whether vehicle speed restriction control is being executed.
If the determination result in step S201 is “NO” (not executed), the execution of this routine is temporarily ended.
When the determination result in step S201 is “YES” (during execution), the process proceeds to step S202, and it is determined whether or not the vehicle speed limit control is being resumed. The time when the vehicle speed limit control is resumed means the time when the vehicle speed limit control is resumed by operating the resume / increase switch 13.

  If the determination result in step S202 is “YES” (when restarting), the process proceeds to step S203, where the vehicle speed of the host vehicle detected by the vehicle speed sensor 11 at the time of restarting (that is, traveling of the host vehicle when the vehicle speed limit control is restarted). The speed deviation ΔV (ΔV = Vs−Lr) between the speed) Vs and the speed limit (that is, the previous speed limit) Lr read and set from the storage unit 15 at the time of resumption is a preset threshold A (for example, 5 km / It is determined whether or not a state larger than h) continues for a determination time T2 (for example, 1 second) or longer.

If the determination result in step S203 is “YES”, that is, if the state in which the speed deviation ΔV is greater than the threshold value A continues for the determination time T2 or longer, the process proceeds to step S204 to notify the overspeed, The execution of this routine is temporarily terminated.
When the determination result in step S203 is “NO”, that is, when the speed deviation ΔV is smaller than the threshold A, or when the duration of the state where the speed deviation ΔV is larger than the threshold A is smaller than the determination time T2. In this case, since it is not necessary to notify the overspeed, the execution of this routine is temporarily terminated.

  On the other hand, if the determination result in step S202 is “NO” (when not restarted), the process proceeds to step S205, where the speed deviation ΔV between the current vehicle speed V of the host vehicle detected by the vehicle speed sensor 11 and the limit speed VLim. It is determined whether or not a state in which (ΔV = V−VLim) is larger than the threshold value A continues for a determination time T1 (for example, 2 seconds). Here, the determination time T1 is set to a value larger than the determination time T2.

  If the determination result in step S205 is “YES”, that is, if the state in which the speed deviation ΔV is greater than the threshold value A continues for the determination time T1 or longer, the process proceeds to step S204 to notify the overspeed, The execution of this routine is temporarily terminated.

  On the other hand, when the determination result in step S205 is “NO”, that is, the speed deviation ΔV is smaller than the threshold A, or the duration time in which the speed deviation ΔV is larger than the threshold A is smaller than the determination time T1. In this case, since it is not necessary to notify the overspeed, the execution of this routine is temporarily terminated.

When the overspeed notification determination is performed as described above, the determination time at the time of restarting the vehicle speed limit control is smaller than the determination time at the normal time. It can be carried out.
Therefore, when the driver intends to change the speed limit when resuming the vehicle speed limit control, a prompt speed over notification prompts the driver to change the speed limit and speeds up the speed limit change operation by the driver. I can expect that.
When the speed limit change operation at the time of restarting the vehicle speed limit control is accelerated, unnecessary acceleration / deceleration in which the traveling speed of the host vehicle decreases below the speed limit after the change and then accelerates to the speed limit after the change again is performed. It can be prevented from occurring.

It is a block diagram in the Example of the vehicle speed limiting apparatus which concerns on this invention. It is a flowchart which shows the overspeed notification determination process (Example 1) in a vehicle speed limiting device. 6 is a time chart when the vehicle speed limiting control is resumed in the vehicle speed limiting device according to the first embodiment. It is a flowchart which shows the overspeed notification determination process (Example 2) in a vehicle speed limiting apparatus. It is a time chart at the time of vehicle speed restriction control resumption 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 setting means)
13 restart / increase switch (vehicle speed limit control restart means , speed limit setting means )
14 Interruption switch (vehicle speed limit control interruption means)
15 Storage unit (speed limit storage means)
19 Notification device (overspeed notification means)
20 Electronic control device ( control means )
21 Speed limit setting part (Speed limit setting means)
23 Vehicle speed limit control unit (vehicle speed limiting means)

Claims (2)

Traveling speed detection means for detecting the traveling speed of the vehicle;
Speed limit setting means that can change the speed limit by the operation of the occupant and set the speed limit,
Speed limit storage means for storing the speed limit set by the speed limit setting means ;
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;
And overspeed informing means for informing the overspeed to ride membered,
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 ;
When the vehicle speed limit control is restarted by the vehicle speed limit control restarting means, when the traveling speed at the time of restarting the vehicle speed limit control is greater than the limit speed and the speed deviation is greater than or equal to a predetermined value, the speed deviation is greater than or equal to the predetermined value. When the vehicle speed limit control is being executed except when the vehicle speed limit control is restarted, the travel speed detected by the travel speed detecting unit is Control means for activating the speed excess notification means when a state where the speed deviation is greater than the limit speed and the speed deviation is equal to or greater than a predetermined value continues for a determination time or more;
Speed limiting device characterized by comprising a. Traveling speed detection means for detecting the traveling speed of the vehicle;
Speed limit setting means that can change the speed limit by the operation of the occupant and set the speed limit,
Speed limit storage means for storing the speed limit set by the speed limit setting means ;
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;
And overspeed informing means for informing the overspeed to ride membered,
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 ;
When the traveling speed detected by the traveling speed detecting means is greater than the speed limit and the state where the speed deviation is equal to or greater than a predetermined value continues for a determination time or longer, the overspeed notification means is activated, and the determination the time, when the vehicle speed limiting control resumption by the vehicle speed limiting control resuming means, and control means for shorter than when the vehicle speed limiting control be other than when the vehicle speed limiting control resumption is being executed,
Speed limiting device characterized by comprising a.

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