KR19990080445A - Automatic wiper operation cycle control device that operates in proportion to the speed of the moving object - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic wiper operation cycle control device which operates in proportion to the speed of a moving object. Particularly, the wiper operation period of the wiper when the rain or snow falls in the adjustment of the wiper attached to the window of the vehicle or the moving object. By operating in proportion to, there is an advantage that the driver's safe driving and a comfortable visual field can be effectively secured.

Description

Automatic wiper operation cycle control device that operates in proportion to the speed of the moving object

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic wiper operation cycle control device which operates in proportion to the speed of a moving object. Particularly, the wiper operation period of the wiper when the rain or snow falls in the adjustment of the wiper attached to the window of the vehicle or the moving object. The present invention relates to a technology for effectively securing a driver's field of vision in rainy weather.

In general, the operation of the wiper attached to the vehicle is fixed in three or four stages of operation cycle from low speed to high speed, the step adjustment is made by the driver to arbitrarily select the appropriate operation cycle.

Accordingly, when rain or snow falls, the speed of the vehicle changes from time to time due to uncomfortable driving as well as city driving or road environment, and the amount of rain or snow that hits the windshield increases and decreases in proportion to the speed of the vehicle. Therefore, it acts as an element that can interfere with the comfort of the driver's vision.

In such a state, the wiper is operated for the comfort of the field of view, and the operation period of the wiper also operates even if the amount of rain or snow that hits the windshield changes with the change of the moving speed of the vehicle. As it is limited to the range of two to three stages, there is a limit to the degree of comfort.

In addition, the step adjustment of the wiper can be a factor that provides inconvenience for safe driving because the operation cycle can be changed only by the manual operation of the driver.

In the present invention, in view of the conventional problems as described above, it is possible to automatically adjust the wiper operating period in proportion to the running speed of the vehicle running, so that the driver's field of vision can be properly secured even in rain or snow environment. In addition, an object of the present invention is to provide a wiper automatic motion control device that provides assistance to the driver's safe operation due to the automatic motion of the wiper.

That is, the speed of the wiper is proportional to the speed of the vehicle by detecting the speed of the vehicle electronically from the speedometer of the vehicle or the output of the electronic speed sensor and processing the signal to generate the wiper operation command signal. To be done.

1 is a view schematically showing the interlocking relationship of the automatic wiper operation cycle control apparatus according to the present invention.

Figure 2 is a detailed block diagram of the wiper operation cycle automatic control apparatus of the present invention.

Figure 3 is a flow chart showing the operation of the automatic control device according to the present invention.

<Description of Symbols for Major Parts of Drawings>

10: wiper automatic drive unit 11: speed detection pulse generator

12: minimum speed pulse generator 13: oh-ah operation unit

20: motor operation data providing unit 21: up-down clock toggle switch

22: clock generator 23: reference data provider

24: Up-down counter / data providing unit 30: Initial motor drive unit

40: motor operation control unit 41: down counter

42: drive signal output unit 43: oh-ah operation unit

44: down counter control signal generator 50: wiper motor

The configuration of the present invention for achieving the above object is a wiper automatic operation drive unit for detecting the speed of the vehicle, and outputs a different pulse according to the speed of the speed to use as a value for automatic control of the wiper;

A motor operation data providing unit for controlling the motor operation reference value by selecting an up-down of the operation period when the driver wants to control the operation period of the wiper by manual operation of the driver;

An initial motor driver for driving the motor during the initial operation of the wiper while driving;

And a motor operation control unit configured to drive the wiper motor by processing the value input from the wiper automatic operation driving unit and the motor operation data providing unit.

The above objects, features, and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a block diagram schematically showing the technical idea of the present invention, the vehicle speed is measured (1) by controlling the wiper operation cycle automatic control device 2 according to the present invention, then the wiper motor ( 3) to operate.

Referring to the detailed block of the wiper automatic control device as shown in Figure 2, after detecting the speed of the vehicle, the wiper automatic to output a different pulse according to the speed of the speed to use as a value for automatic control of the wiper An operation driver 10;

A motor operation data providing unit 20 for controlling a motor operation reference value by selecting an up-down of the operation period when the driver wants to control the operation period of the wiper by manual operation of the driver;

An initial motor driver 30 for driving the motor during the initial operation of the wiper while driving;

A motor operation control unit 40 for driving the wiper motor 50 by processing values input from the wiper automatic operation driving unit 10 and the motor operation data providing unit 20;

It comprises a wiper motor 50 for operating the wiper according to the signal input from the initial motor driving unit 30 and the motor operation control unit 40.

The wiper automatic operation driver 10 includes: a speed detection pulse generator 11 for detecting a speed of the vehicle and outputting a clock pulse having a high frequency when the vehicle is at a predetermined speed or more;

A minimum speed pulse generator 12 for outputting a clock pulse having a low frequency when the vehicle is at a low speed or a stopped state;

And a mis-operation unit 13 for outputting a signal input from each of the pulse generators 11 and 12 to the motor operation control unit 30.

At this time, the speed detection pulse generator 11 outputs a reset signal to the lowest speed pulse generator 13 whenever a pulse is generated to control the oscillation in the lowest speed pulse generator 13.

This is to selectively input the output of the generator for generating a pulse according to the speed of the vehicle to the motor operation control unit 30, which will be described in detail as follows.

According to the present invention, when the speed of the vehicle is increased, the operation period of the wiper is also increased. On the contrary, when the speed of the vehicle is lowered, the operation period of the wiper is also controlled slowly. The minimum speed pulse generator 12 has a speed of about 10 km to 20 km. It is a generator 12 that outputs a clock frequency even when it is applicable and in a stopped state.

When the vehicle is driving at a high speed, the reset signal input from the speed detection pulse generator 11 to the lowest speed pulse generator 12 is input very quickly according to the speed of the pulse.

This is as if the reset signals are input continuously, so that the lowest speed pulse generator 12 has no opportunity to oscillate.

On the contrary, when the vehicle is traveling at a slow speed or in a stopped state, the reset signal is input through the speed detection pulse generator 11, but the reset signal is not continuously input as in the case where the speed of the vehicle is high. There is a certain interval between the reset signal to be input and the next reset signal to be input, and the clock oscillated by the lowest speed pulse generator 13 is output.

According to the principle described above, when the speed of the vehicle is fast, the clock output from the speed detection pulse generator 11 having a high clock frequency is input to the OR operation unit 13, resulting in a faster operation cycle of the wiper. When the speed is slow or in the stop state, the clock output from the lowest speed pulse generator 12 having a low clock frequency is input to the OR operation unit 13, and as a result, the operation cycle of the wiper becomes slow.

On the other hand, the motor operation data providing unit 20 includes an up-down clock toggle switch 21 which the driver manually operates to control the operation period of the wiper;

A clock generator 22 for providing a clock according to the operation of the up-down clock toggle switch 21;

A reference data providing unit 23 for providing a motor operation reference value to the motor operation data providing unit 20 for initial operation of the motor;

Up-down counter / data input unit for up-down the data input from the reference data providing unit 23 according to the clock input from the up-down clock toggle switch 21 and inputting it to the motor operation data providing unit 20. It comprises 24.

The motor operation control unit 40 includes a down counter 41 for counting down a reference value input from the up-down counter / parallel data input unit 24 according to a clock input from the wiper automatic operation driver 10;

A driving signal output unit 42 which detects a value of '0' during counting in the down counter 41 and outputs a wiper motor driving signal;

An ora operation unit (43) for driving the wiper motor (50) according to the signals output from the drive signal output unit (42) and the initial motor driver (30);

When the motor 50 is operated according to the driving signal inputted through the oh-a calculator 43, an electrical signal generated during an operation period of the motor 50 is shaped and counted as a counting control signal of the down counter 41. It comprises a down counter control signal generator 44 for outputting.

The operation of the wiper automatic control device configured as described above will be described with reference to the main part.

When a situation is required to operate the wiper while driving the vehicle, first, a switch (not shown) attached to the initial motor driving unit 30 is turned on so that the initial wiper operation occurs.

Here, when the switch of the initial motor driving unit 30 is turned on, the wiper initial operation signal S1 and the wiper motor initial driving signal S2 are output, and the wiper motor initial driving signal S2 is output from the motor operation control unit (S2). It is input to the oh-or operation part 43 of 40, and operates the wiper motor 50 once.

The wiper initial operation signal S1 is input to the up-down counter / data input unit 24 at the same time as the above operation, and the data stored in the reference data providing unit 23 is an up-down counter according to the input. The data is input to the data input unit 24.

At this time, since there is no operation of the driver's up-down clock toggle switch 21, the data input from the reference data providing unit 23 is directly input to the down counter 41, and the input data is input to the wiper automatic driving unit ( 10 is down counted according to the clock applied, and the resultant value is applied to the driving signal output unit 42.

The drive signal output unit 42 outputs the wiper motor drive signal S3 when a value of '0' is detected from the down counted value, and re-drives the wiper that has been operated once through the oh-a calculator 43. Let's do it.

When driving the vehicle continuously in the above state, the driver manually changed the operation cycle stage of the wiper according to the amount of rain or snow. In the present invention, when the above state starts, the speed of the vehicle is changed from then on. The wiper operation cycle changes accordingly.

In other words, when the value set according to the counting of the down counter 41 changes to '0', reference data is provided from the up-down counter / data input unit 24 immediately, and if the data is provided, the down counter ( Counting of 41) is stopped.

This is controlled by the down counter control signal generator 44 which processes an electrical signal generated when the wiper motor 50 is in operation and outputs it as a down counter control signal S4, while the wiper is in operation. The down counting operation of the down counter 41 is stopped, and this is a period in which data output from the up-down counter / data input unit 24 is set again in the down counter 41.

When the value of the down counter 41 is set again as described above, this value is down counted again according to the clock applied from the wiper automatic driving unit 10. At this time, if the driving speed of the vehicle changes rapidly, the input clock frequency is also high. The counting speed is also increased, so that the time to become '0' is often generated. Accordingly, the output of the wiper motor driving signal S3 is also increased, thereby increasing the operation period of the wiper.

On the contrary, when the speed of the vehicle is lowered, the clock frequency applied by the wiper automatic driving unit 10 is lowered, so that the number of times of the output of the wiper motor driving signal S3 is also reduced.

According to the above operation, when the driver drives the wiper operation with a single operation, the wiper operation cycle is automatically changed according to the speed of the vehicle thereafter.

On the other hand, when the amount of rain or snow is reduced and the speed of the vehicle is increased, it may be necessary to slow down the operation cycle of the wiper. In this case, the clock is up by using the up-down clock toggle switch 21.

At this time, the clock is provided by the clock generator 22, and the clock generator 22 has a potential of 5 Hz to 10 Hz in the present invention, and according to the operation of the toggle switch 21, the up-down counter / data The clock is selectively provided to the providing unit 24.

When an up-clock is inputted by the driver by operating the toggle switch 21, the reference data value is increased by the input clock number, and this value is inputted to the down counter 41, and the value 0 is set by the down counter 41. Reduces the number of occurrences of '.

Accordingly, the wiper motor driving signal (S3) output frequency is also reduced, the operation cycle of the wiper is slow, and in this state, the wiper moves automatically according to the speed of the next vehicle.

On the other hand, in contrast to the above, when the wiper operation cycle is slow, the down clock is input and the reference data value is down and input. Accordingly, the period in which '0' occurs is accelerated, thereby increasing the operation cycle of the wiper.

The operation described above is briefly summarized through the flowchart of FIG. 3 as follows.

Turning on the switch of the initial motor driver when the wiper needs to be operated while the vehicle is running (N1);

In step N1, the up-down counter / data input unit outputs reference data, and the motor operates the wiper once according to the wiper motor initial drive signal (N2);

After the operation, it is determined whether there is a change of the reference data value through the up-down counter / data input unit, and if the data is changed, the corresponding processing is performed. If there is no change, the reference data value input in the previous step is transferred to the down counter. Re-input process (N3);

(N4) down counting the value input in the step (N3);

Determining whether a value of '0' is detected in the counting value, driving a counter until it is detected, and driving a wiper motor if detected;

Determining whether or not the wiper operation cycle is appropriate during the operation of the wiper motor, if appropriate, continue to input the reference data to the down counter to operate the wiper, and if not, perform the reference data value adjustment of the up-down counter (N6). To perform, including.

The reference data value changing step (N3) includes determining whether the operation cycle of the currently operating wiper is fast and increasing the reference data value using an up-down clock toggle switch (N3-1) as early as possible;

Determining that the reference data value is reduced by using an up-down clock toggle switch when it is determined that the wiper operation cycle is slow (N3-2);

If the reference data value is changed through each of the above steps, resetting the changed value to the reference data value of the up-down counter / data input unit and then jumping to a process of inputting the reference data value to the down counter (N3-3). )).

If the present invention described above takes the actual situation as an example, if the wiper operation cycle is selected to reciprocate once every two seconds when the vehicle is traveling at 30 km / h, the speed of the wiper is increased to 60 km / h. The operating cycle is once every second, so the reciprocating motion of the wiper is twice as fast. When the speed is reduced to 15 km / h, the wiper's operation cycle is operated once every 4 seconds. Delayed by half.

Therefore, depending on the amount of rain, the wiper operating cycle is selected according to the amount of rain or rain, so the wiper operating cycle is always maintained automatically in accordance with the speed of the vehicle, even in situations such as complicated city driving lights. It can be.

For reference, the configuration of the present invention may be simply implemented using a semiconductor chip or a processor that is currently used a lot.

As described in detail above, the present invention allows the driver to automatically change the operation period of the wiper attached to the vehicle according to the speed of the vehicle, thereby providing a driver with safety of driving and a comfortable visual field. This technology can be applied to wiper control when wiper is used on the object.

In addition, a preferred embodiment of the present invention is disclosed for the purpose of illustration, those skilled in the art will be able to make various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications and modifications belong to the following claims You will have to look.

Claims (6)

In the wiper operation drive control device, A wiper automatic operation driver for detecting a speed of the moving body and outputting another pulse according to the speed of the moving body to use as a value for automatic control of the wiper; A motor operation data providing unit for controlling the motor operation reference value by selecting an up-down of the operation period when the driver wants to control the operation period of the wiper by manual operation of the driver; An initial motor driver for driving the motor during the initial operation of the wiper while driving; And a motor operation control unit configured to drive a wiper motor by processing a value input from the wiper automatic operation driving unit and a motor operation data providing unit. An automatic wiper operation cycle control device, characterized in that the operation period of the wiper is driven in proportion to the speed of the moving object. The method of claim 1, The wiper automatic operation driver includes: a speed detection pulse generator for detecting a speed of the moving object and outputting a clock pulse having a high frequency when the speed of the moving object is higher than a predetermined speed; A minimum speed pulse generator for outputting a clock pulse having a low frequency even when the moving object is at a low speed or a stationary state; And an operation unit for outputting a signal input from each pulse generator to a motor operation control unit. The method of claim 2, And the speed detection pulse generator outputs a reset signal to the lowest speed pulse generator each time a pulse is generated to control the oscillation of the lowest speed pulse generator. The method of claim 1, The motor operation data providing unit includes an up-down clock toggle switch that the driver manually operates to control an operation period of the wiper; A clock generator for providing a clock according to the operation of the up-down clock toggle switch; A reference data providing unit providing a motor operation reference value to a motor operation data providing unit for initial operation of the motor; A wiper operation cycle comprising an up-down counter / data input unit configured to up-down data input from the reference data provider according to a clock input from an up-down clock toggle switch and input the motor operation data provider Automatic control device. The method of claim 1, The motor operation control unit may further include a down counter configured to down count a reference value input from the up-down counter / parallel data input unit according to a clock input from the wiper automatic operation driver; A driving signal output unit which detects the signal value for driving the motor during the counting operation in the down counter and outputs a wiper motor driving signal; A calculating unit which drives a wiper motor according to the signals output from the driving signal output unit and the initial motor driving unit; And a down counter control signal generator for shaping an electrical signal generated during an operation period of the motor when the motor is operated according to the driving signal input through the operation unit and outputting it as a counting control signal of the down counter. Automatic operation cycle control device. The method of claim 5, The control signal output from the down counter control signal generator may stop the counting operation of the down counter when the wiper motor is in operation to perform the operation of resetting the counting value of the down counter. Automatic control device.