JPH04287725A - Constant-speed running control device for vehicle - Google Patents

Abstract

PURPOSE:To improve operability by judging whether a tap action is a continuous action in a preset period or not, increasing or decreasing the present vehicle speed for each tap action to set the target vehicle speed if it is not the continuous action, and increasing or decreasing the target vehicle speed for each action to set the target vehicle speed if it is the continuous action. CONSTITUTION:When a tap action: tap deceleration or tap acceleration, is continuously repeated, a controller 3 drives a timer and judges whether it is a continuous tap action in a preset period or not. If it is not the continuous action, a fixed vehicle speed is increased or decreased from the present vehicle speed for each tap action to set the target vehicle speed. If it is the continuous action, a fixed vehicle speed is increased or decreased from the target vehicle speed for each tap action to set the target vehicle speed.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a constant speed cruise control device for maintaining a constant vehicle speed in a vehicle such as an automobile, and more specifically, it has a tap function to finely adjust the vehicle speed in constant vehicle speed increments. The present invention relates to a constant speed cruise control device.

0002

[Prior Art] In general, constant speed driving of an automobile, so-called
Some auto cruise systems use a tap function to fine-tune vehicle speed. This tap function increases the vehicle speed by a constant speed, for example, 1.6 km/hr, by operating the acceleration operation switch while driving at a constant speed, or increases the vehicle speed by a constant speed, for example, 1.6 km/hr, by operating the acceleration operation switch, or by operating the deceleration operation switch. This reduces the vehicle speed at a constant rate.

In this conventional tap function, when the above-mentioned switch is operated, the target vehicle speed is determined by increasing or decreasing the constant vehicle speed from the vehicle speed at that time (current vehicle speed).

0004

[Problem to be Solved by the Invention] With such a conventional tap function, even if the target vehicle speed cannot be maintained for some reason such as uphill or downhill, the current vehicle speed is Since the vehicle speed can be finely adjusted from the front, the driver does not feel any discomfort, which is preferable.

However, when the tap operation, that is, the above-mentioned switch operation is repeated several times in succession, the vehicle speed cannot immediately follow, and therefore the vehicle speed cannot be increased or decreased by the number of operations. The vehicle speed is a constant increase or decrease from the vehicle speed at the time of the last operation, and therefore, there is a problem in that it takes time and effort for the driver to reach the target vehicle speed with a tap operation.

The present invention has been made in view of the above points, and improves operability by ensuring that when tap operations are repeated continuously, the vehicle speed increases or decreases by the number of operations. The purpose is to improve.

[0007]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention is constructed as follows.

That is, the present invention provides a constant speed cruise control device having a tap function that controls the vehicle speed so that the current vehicle speed matches the target vehicle speed, and finely adjusts the vehicle speed by increasing or decreasing the vehicle speed by a constant amount in response to a tap operation. and a determination means for determining whether or not the tap operation is a continuous tap operation performed within a predetermined time; The device is provided with a target vehicle speed setting means that sets the vehicle speed increased or decreased by the constant vehicle speed as a target vehicle speed, and sets the vehicle speed increased or decreased by the constant vehicle speed from the target vehicle speed for each tap operation when the tap operation is continuous.

[0009]

[Operation] According to the above configuration, in the case of continuous tap operation, the target vehicle speed is not set as the vehicle speed that is a constant increase or decrease from the current vehicle speed, but the target vehicle speed is set as the vehicle speed that is a constant increase or decrease from the target vehicle speed. This ensures that the vehicle speed can be increased or decreased by the number of tap operations.

0010

Embodiments Hereinafter, embodiments of the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention applied to an automobile.

In the figure, 1 is a vehicle speed sensor that detects the vehicle speed, and 2 is a control switch. This control switch 2 is composed of a set switch 2a, a resume switch 2b, and a cancel switch 2c.

[0013] The set switch 2a is used to start constant speed driving at the current vehicle speed, and when turned on for a certain period of time (t) or more during constant speed driving,
During the ON operation period, the vehicle is decelerated and the vehicle is driven at a constant speed when the vehicle is OFF (coast), or for a certain period of time (t) while the vehicle is traveling at a constant speed.
Fine adjustment to the deceleration side can be made by turning on the
tap deceleration).

[0014] The resume switch 2b is used to resume constant speed driving at the memorized vehicle speed.Furthermore, by turning on the resume switch 2b for a certain period of time (t) or more while driving at a constant speed, The speed is increased and the vehicle is driven at a constant speed when the vehicle is OFF (acceleration), or by being turned on for less than a certain time (t) while driving at a constant speed, fine adjustment is made to the speed increasing side (tap acceleration).

[0015] The cancel switch 2c is used to cancel constant speed running, similar to a brake operation.

Reference numeral 3 denotes a controller, and this controller 3 has a built-in CPU, ROM, and RAM, and when driving at a constant speed (cruise), the actuator 4 is activated based on the operation of the control switch 2 and the output of the vehicle speed sensor 1. The vehicle speed is controlled by controlling the opening degree of the throttle 5 via the controller 3, and the control by the controller 3 is similar to the conventional example except for control during tap operation, which will be described later.

In this embodiment, even if the tap operations such as tap deceleration or tap acceleration described above are repeatedly performed, in order to ensure that the vehicle speed increases or decreases by the number of tap operations, , is configured as follows.

That is, the controller 3 has the function of determining, when a tap operation is made, whether or not the operation is a continuous tap operation performed within a predetermined time period. Based on this determination, when the tap operation is not continuous, the target vehicle speed is set to the vehicle speed that is increased or decreased by a constant speed from the current vehicle speed for each tap operation, as in the past, and when the tap operation is continuous, the target vehicle speed is set for each tap operation. It has a function as a target vehicle speed setting means that sets a vehicle speed that is a constant vehicle speed increase or decrease from the vehicle speed as a target vehicle speed.

In other words, in the present invention, if the tap operation is a single operation that is not continuous, the vehicle speed that is increased or decreased by a constant speed from the current vehicle speed is set as the target vehicle speed for each tap operation, as in the conventional case. If it is an operation, the vehicle speed that is increased or decreased by the constant vehicle speed from the target vehicle speed each time the tap operation is performed is set as the target vehicle speed.

[0020] Therefore, when the tap operation is performed continuously, the vehicle speed cannot follow immediately, so in the conventional example, it is not possible to increase or decrease the vehicle speed by the number of operations.
In the present invention, in which the target vehicle speed is set to a vehicle speed that is a constant increase or decrease from the target vehicle speed, this does not occur and the vehicle speed can be reliably increased or decreased by the number of tap operations.

FIG. 2 is a flowchart for explaining the operation in the case of tap deceleration.

First, the operation of the control switch 2
It is determined whether or not it is tap deceleration (step S1), and if it is tap deceleration, it is delayed for a predetermined time, for example, 1
It is determined whether or not the timer corresponding to seconds has finished its operation (step S2), and when it has finished its operation (timer up), it is determined that the tap operation is not continuous, that is, it is a single tap operation. From current vehicle speed to constant vehicle speed (X
= 1.6km/hr) is set as the target vehicle speed (step S3), a value corresponding to the predetermined time is set in the timer again, and the timer is activated (step S5).
, the timer decrements by 1 until its value becomes 0.

In step S2, if the timer has not finished operating, it is assumed that the tap operations have been performed continuously within a predetermined period of time, and the target vehicle speed is determined by subtracting the constant vehicle speed (X) from the target vehicle speed. Toshi (Step S4)
, the process moves to step S5.

[0024] In this way, it is determined whether the tap operations are continuous or not, and the target vehicle speed is set in accordance with the determination.

Note that this process is executed at a specific cycle on the program, and the tap acceleration is basically the same as the flow described above.

[0026]

[Effects of the Invention] As described above, according to the present invention, it is determined whether the tap operation is a continuous operation or not, and if the tap operation is a continuous operation, the vehicle speed is increased or decreased by a constant value from the target vehicle speed with each tap operation. The vehicle speed is set as the target vehicle speed, and when the operation is a one-off operation, the target vehicle speed is the vehicle speed that is increased or decreased by a constant speed from the current vehicle speed for each tap operation, as in the past, so in the case of continuous tap operations, the number of tap operations This means that it is possible to reliably increase or decrease the vehicle speed by a certain amount, resulting in improved operability compared to the conventional example.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment to which the present invention is applied.

FIG. 2 is a flowchart for explaining the operation of FIG. 1;

[Explanation of symbols]

1 Vehicle speed sensor 2 Control switch 3 Controller

Claims (1)

[Claims] 1. A constant speed cruise control device that controls the vehicle speed so that the current vehicle speed matches the target vehicle speed, and has a tap function that finely adjusts the vehicle speed by increasing or decreasing the vehicle speed by a constant amount in response to a tap operation, the device comprising: Discrimination means for determining whether or not the tap operation is a continuous tap operation performed within a predetermined time;
Based on this determination, when the tap operation is not continuous, the vehicle speed is set as the vehicle speed increased or decreased by the constant vehicle speed from the current vehicle speed for each tap operation, and when the tap operation is continuous, the vehicle speed is changed from the target vehicle speed to the constant vehicle speed for each tap operation. A constant speed running control device for a vehicle, comprising: target vehicle speed setting means that sets the increased or decreased vehicle speed as a target vehicle speed.