JPH06199207A - Microcomputerized learning type intermittent wiper control device - Google Patents

Abstract

PURPOSE: To provide a microcomputer learning-type wiper controller which controls the wiper of a vehicle in a 'learning type' by means of the processor of a mrcrocomputer, stores time during intermittent wiping and adjusts the length of time during wiping, which is viewed, at any time. CONSTITUTION: A power circuit 1, an input photocoupling circuit 2, a reset circuit 3, a microcomputer processing circuit 4 and a driving circuit 5 are installed. A person driving a vehicle turns a wiper switch to the position of intermittent wiping and returns it to the position of OFF. First piping time and second wiping time are stored by permitting the driving person to turn the wiper switch to the intermittent position and the operation time intervals of this time and previous time are repetitively repeated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intermittent wiper control device for an automatic vehicle, and more particularly to a microcomputer-controlled intermittent wiper control device for a person who drives a vehicle when it is raining. Turn the switch to the intermittent position, return it to the OFF position, perform the first wiping, and then turn on the wiper switch that sets the time between wiping operations.
By overlapping the time until the next wiping is performed, the time between these two wipings is collated to determine the periodic second intermittent wiping. When changing the wiping speed, the driver's intuitive reaction is adjusted, and the microcomputer processing circuit adjusts the difference between the next operation and the previous operation time to perform the intermittent wiping. As described above, the present invention relates to a microcomputer learning type intermittent wiper control device capable of adjusting a time interval until the wiping is completed.

[0002]

2. Description of the Related Art According to statistics, until recently, the growth rate of the number of automobiles used has grown at a geometrical rate, and in comparison to that, the rate of sudden traffic accidents has also increased significantly. It is in. Driving in the rain is one of the causes. In other words, the visibility deteriorates and even a slight warning leads to the occurrence of a sudden accident, and the accident caused by driving in the rain accounts for a large proportion of the cause of a traffic accident. Therefore how to improve the visibility of the situation in operation during rain, may be referred to or not to repeat the unfortunate incident was an important issue that must be resolved quickly.

Most commonly used conventional automotive wiper constructions are similar, albeit with some slight differences, although there is some improvement in the time between intermittent wiper wipings. It is classified into the following two types.

(B) Almost no difference is found in the intermittent wiping in the structure of the wiper provided in the general automobile. That is, the so-called "intermittent type" wiper sets an appropriate "intermittent time" first, and as shown in FIG. 1, the wiping time is made equal to perform wiping. The time between these wipings is equal and cannot be adjusted. On the other hand, the one that adjusts and changes the wiping is too practical to be practical.

All of the adjustable wiper structures described in (b) and (a), so-called "adjustable" wipers, adjust the value of VR using the RC vibration principle. After a person sees and judges,
Adjust R. Then, it is possible to adjust to "reasonable wiping that best suits the situation" only after an intermediate process of repeating adjustments many times. However, even if we could finally adjust to "the most reasonable rational wiping", the rain condition could change again, and "certainty most suitable wiping" was not certain. Furthermore, in the process of repeating the adjustment many times, carelessness of driving was neglected, which could lead to an unfortunate and irreparable accident.

[0006]

The fixed wiper of the above-mentioned prior art (a) cannot be adjusted depending on the intensity of rain. In addition, in the adjustable wiper of (b), the VR is adjusted manually by a person after surely making a judgment, that is, the VR is manually adjusted, that is, the adjustment is repeated many times. Wiping "
Can be adjusted to. However, even if it was finally possible to adjust to "the most reasonable rational wiping", the state of rain could change again, and "certainty most suitable rational wiping" lacked certainty. Furthermore,
In the process of repeating the adjustment many times, neglect the attention of driving,
There were also unfortunate and irreparable accidents. The present invention was devised to solve the above drawbacks.

[0007]

First, a power supply circuit (1) consisting of a moderator of IC1 is provided. It also cancels the noise signal by C1.

Next, an input photocoupling circuit (2) is provided. PH1, R3 and R4 of the input photocoupling circuit (2) are wiper motor position opening / closing signals at the connection point E, and PH2, R2 and R5 are Wiper fountain opening / closing signals at connection point D, PH3, R1, and R6 are intermittent wiper opening / closing signals at connection point C.

Further, a reset circuit (3) is provided, and the reset circuit (3) comprises Q1, R7, R8 and R9,
The voltage is measured and if it is below 4.5V, a reset signal is issued.

A microcomputer processing circuit (4) is also provided. This is an IC2 single-chip microcomputer (SINGLE CHIP MICR
OCOMPUTER), RAM and ROM inside
And I / O. Among them, PB0, PB1, P
The signal is input from B2 and the signal is output from PA0. Also, R11, R12, C4, C5, XL
To OSC1 and OSC2 clock signals from R1
Noise is removed from 0, C2, and C3.

A drive circuit (5) is further provided. The output signal of the drive circuit (5) amplifies the current by R13, Q2, R14 and Q3, and then drives the relay RL and further F
The control signal is output from the point. D
1 is the RL pulse prevention, but the power supply circuit stabilizes the input voltage at both A and B points to the working voltage of 5V, and the PB0, PB1 and PB2 inputs of the microcomputer processing circuit are input by the photocoupling circuit. The E2 point wiper motor position open / close signal, the D point wiper fountain open / close signal, the C point wiper intermittent open / close signal, etc. are stored in the IC2, processed by software, and then output from the PA0 to drive again. The signal is output from the F point through the circuit, and repeated until a new signal is input to the C, D, and E points again.

[0012]

[Function] When a person driving a car feels that the rain collected on the windshield directly affects his or her vision while driving in the rain, turn the wiper switch to the intermittent position and then turn the wiper off.
After returning to the position F, the wiper is operated for the first time, and when it is felt that the line of sight is affected again while the vehicle is traveling, the wiper switch is turned to the intermittent wiping position for the second time operation.

When the amount of rain increases during the intermittent wiping and the rain on the windshield affects the visibility, it is sufficient to turn off the switch of the wiper and then turn it to the intermittent wiping position again.

During the intermittent wiping, if it rains a little, it is necessary to extend the wiping time in order to avoid noise due to friction between the wiper and the windshield and to protect the wiper. That is, the wiping interval time must be extended. At this time, the wiper switch may be turned off. Rain on the windshield does not affect visibility until a long time has passed because of the light rain. Then, when the rain affects the visibility, the switch is turned to the intermittent wiping position again for wiping.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be further described with reference to the drawings in order to understand the contents of features and structures of the present invention.

FIG. 1 is a diagram showing the operation of a general intermittent wiper. There are two types of intermittent wipers which are commonly used at present, a setting intermittent type and an adjustable intermittent type. The adjustable intermittent wiper adjusts the length of each wiping time interval each time, and the length of the time once adjusted and set follows the length of ΔP.

FIG. 2 is an operation diagram of the microcomputer learning type intermittent wiper control device of the present invention, and FIG. 4 is a block diagram of an electric circuit of the microcomputer learning type intermittent wiper control device of the present invention. However, the following are listed as the components of the output.

A motor switch (PB2) measures the wiper's current position as well as prompts to complete the wiping.

When using the fountain switch (PB1),
First, after the fountain is first sprayed, wiping is started again after a pause of about 1 second. At this time, if the motor switch is immediately pressed, the wiper continues the operation, and if the hand is released from the motor switch, the wiper performs two consecutive wiping operations. After 4 seconds, when the amount of rain flowing through the windshield of the car is low, perform one final wiping to completely clean the windshield. In this way, the operation is simple and practical.

The intermittent switch (PBO) is the most representative of the features of the present invention and provides the effect of the "learning type intermittent wiper". That is, (a) When a person driving a car feels that the rain collected on the windshield directly affects his or her vision while driving in the rain,
Turn the wiper switch to the intermittent position and then return it to the OFF position, operate the wiper for the first time, and move the wiper switch to the intermittent wiping position when you feel that the line of sight is affected again while the vehicle is in progress. Turn to operate the second time. The time of the current operation and the time of the previous operation are stored, and the interval time between the two is set as a "time interval" to repeatedly perform the intermittent wiping operation. (B) When the rain condition changes and the person driving the car wants to activate the wiping faster or slower, the present invention provides a function that can be adjusted according to the amount of rain. (C) When the amount of rain increases during intermittent wiping and the rain on the windshield affects the visibility, it is sufficient to turn off the wiper switch and then turn it to the intermittent wiping position again. At this time, the wiper is activated again. From this time, the wiper continuously operates with the current operating time and the previous operating time as new time interval units. (D) During intermittent wiping, if it rains lightly, the wiping time must be extended to avoid noise due to friction between the wiper and the windshield and to protect the wiper. That is, the wiping interval time must be extended. At this time, the wiper switch may be turned off. Rain on the windshield does not affect visibility until a long time has passed because of the light rain. Then, when the rain affects the visibility, the switch is turned to the intermittent wiping position again for wiping, and at this time the wiping interval also becomes longer, and the microcomputer circuit sets the operating time this time as the time of the new wiping interval. Continue to operate.

According to the present invention, the person driving the automobile turns the wiper switch to the intermittent position and then returns it to the OFF position to perform the first wiping, and then the person who drives further turns the intermittent wiper position to the second position. The time for wiping is stored, and then the present operation time interval distance and the previous operation time interval distance ΔTO are repeated, and the wiper is intermittently wiped at the interval time of ΔTO.
When the force of the rain changes and the adjustment is made by the intuitive reaction of the driver, the computer processing circuit sets the time interval between the current operation time and the previous operation time as a new time interval distance T1 and repeats again. Further wiper ΔT
The intermittent wiping operation is repeated until the switch is turned off by the new time interval of 1.

Next, the flow of the present invention will be described in more detail with reference to FIGS. 3A, 3B and 3C.

10: Start. 11: It is determined whether or not the fountain switch is ON. 12: Determine whether the fountain switch is ON. 13: Set T1 = 0 and start time measurement at the same time. 14: Judge whether T1> 2 seconds. 15: Turn on the relay and operate the wiper. 16: It is determined whether the fountain switch is ON. 17: T1 time is set and time measurement is stopped. 18: It is determined whether the position signal of the wiper motor is ON. 19: It is determined whether T1 is greater than 1.9 seconds. 20: It is determined whether T1> 0.5 seconds. 21: Set the counter to CNT = 1. 22: Set the counter to CNT = 2. 23: It is determined whether or not the position signal of the wiper motor is ON. 24: It is determined whether or not the position signal of the wiper motor is ON. 25: Judge whether CNT-1 = 0. 26: Relay is OFF. 27: It is determined whether or not the position signal of the wiper motor is ON. 28: Delay for 5 seconds. 29: Relay is ON. 30: It is determined whether or not the position signal of the wiper motor is ON. 31: Relay is OFF. 32: It is determined whether or not the wiper intermittent switch is ON. 33: T2, T3, and T4 = 0 are set. Start T3 time measurement. 34: It is determined whether or not the wiper intermittent switch is ON. 35: It is determined whether T3> 0.3 seconds. 36: Relay is ON. 37: It is determined whether or not the position signal of the wiper motor is ON. 38: Relay is OFF. 39: It is determined whether or not the position signal of the wiper motor is ON. 40: It is determined whether or not the intermittent wiper switch is ON. 41: T3 = 0 is set. 42: Relay is ON. 43: It is determined whether or not the wiper intermittent switch is ON. 44: Relay is OFF. 45: Start T3 time measurement. 46: It is determined whether T3> 600 seconds. 47: T2 = 0 is set. 48: It is determined whether or not the wiper intermittent switch is ON. 49: It is determined whether T2> 0.3 seconds. 50: Stop T3 time measurement, start T4 time measurement. 51: Relay is ON. 52: Determine whether the position signal of the wiper motor is ON. 53: Relay is OFF. 54: It is determined whether or not the intermittent wiper switch is ON. 55: It is determined whether T3 = T4. 56: T4 = 0 is set, and T4 time measurement is started at the same time. 57: Relay is ON. 58: It is determined whether the position signal of the wiper motor is ON. 59: Relay is off. 60: Put T4 time into T3. 61: Set T4 = 0, and simultaneously start T3 time measurement.

FIG. 4 is a circuit diagram of the microcomputer learning intermittent wiper control device of the present invention, which is composed of the following components.

First, the power supply circuit (1) consisting of the moderator of IC1 is one of the constituent elements. It also cancels the noise signal by C1.

Next, the input photocoupling circuit (2). This input photocoupling circuit (2)
Among them, PH1, R3 and R4 are wiper motor position opening / closing signals at the connection point E, PH2, R2 and R5 are wiper fountain opening / closing signals at the connection point D, and PH3, R1 and R6 are wiper intermittent opening / closing signals at the connection point C.

A reset circuit (3) is further provided. The reset circuit (3) is composed of Q1, R7, R8 and R9.
The voltage is measured and if it is below 4.5V, a reset signal is issued.

Further, a microcomputer processing circuit (4) is provided. This is an IC2 single-chip microcomputer (SINGLE CHIP MICR
OCOMPUTER), RAM and ROM inside
And I / O. Among them, PB0, PB1, P
The signal is input from B2 and the signal is output from PA0. Also, R11, R12, C4, C5, XL
To OSC1 and OSC2 clock signals from R1
Noise is removed from 0, C2, and C3.

A drive circuit (5) is further provided. The output signal of the drive circuit (5) amplifies the current by R13, Q2, R14 and Q3, and then drives the relay RL and further F
The control signal is output from the point. D
1 is the RL pulse prevention, but the power supply circuit stabilizes the input voltage at both A and B points to the working voltage of 5V, and the PB0, PB1 and PB2 inputs of the microcomputer processing circuit are input by the photocoupling circuit. The E2 point wiper motor position open / close signal, the D point wiper fountain open / close signal, the C point wiper intermittent open / close signal, etc. are stored in the IC2, processed by software, and then output from the PA0 to drive again. The signal is output from the F point via the circuit and repeated until a new signal is input to the C, D and E three points.

Although the objects, features, and effects of the present invention have been described in detail in the above specific embodiments, it is possible to partially modify the above embodiments.

With the above-mentioned "microcomputer learning intermittent wiper control device" of the present invention, a person driving a car can adjust the intermittent wiping time of the intermittent wiper according to the degree of rain, so that the windshield is always operated from the windshield. The field of view can be maintained at its best. In addition, it is possible to avoid accidental accidents caused by distracting the wiper switch operation, so that driving safety is not impaired.

[0032]

The present invention solves the above drawbacks,
It is completely suitable for practical use, has the certainty of wiping according to the situation, and because it is easy to operate, it is a "microcomputer control wiper control device" that does not worry about accidental accidents Yes, its main feature is that it controls the wiper of the automobile by "learning" by the processing unit of the microcomputer, and stores the time between intermittent wipings. Adjust from time to time, i.e., as shown in Fig. 2, when the time between wiping is too long and it is short, the wiping is too fast, and when the time between wiping is too short, when it is long, the wiping is too long. Slow down, which makes many changes in wiping in an instant.

That is, since the "microcomputer learning type intermittent wiper control device" of the present invention allows a person driving a vehicle to adjust the intermittent wiping time of the intermittent wiper according to the degree of rain, the windshield is always operated from the windshield. The field of view can be maintained at its best. In addition, it is possible to avoid accidental accidents caused by distracting the wiper switch operation, so that driving safety is not impaired.

[Brief description of drawings]

FIG. 1 is an operation diagram of a general intermittent wiper.

FIG. 2 is an operation diagram of a microcomputer learning type intermittent wiper control device of the present invention.

FIG. 3 is a flow chart of a microcomputer learning type intermittent wiper control device of the present invention.

FIG. 4 is a block diagram of an electric circuit of the microcomputer learning intermittent wiper control device of the present invention.

[Explanation of symbols]

 (1) Power supply circuit (2) Input photocoupling circuit (3) Reset circuit (4) Microcomputer processing circuit (5) Drive circuit

[Procedure amendment]

[Submission date] January 4, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is an operation diagram of a general intermittent wiper.

FIG. 2 is an operation diagram of the microcomputer-learning type intermittent wiper control device of the present invention.

FIG. 3A is a flow chart of a microcomputer learning type intermittent wiper control device of the present invention.

FIG. 3B is a flowchart of the microcomputer learning intermittent wiper control device of the present invention.

FIG. 3C is a flow chart of the microcomputer-learning type intermittent wiper control device of the present invention.

FIG. 4 is a block diagram of an electric circuit of the microcomputer learning intermittent wiper control device of the present invention.

[Explanation of reference numerals] 1 ... Power supply circuit 2 ... Input photocoupling circuit 3 ... Reset circuit 4 ... Microcomputer processing circuit 5 ... Drive circuit

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

FIG. 3A

FIG. 3B

[Fig. 3C]

[Figure 4]

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 592222846 Huan Chi-Chin HUANG CHIH-CHIN Taiwan, Taoyuan Ushin, Paite Ushin, Chi Shaw Earldy. , S.C. 1, Rain 425, N.O. 7-3 (72) Inventor Qin Min-U Shin Taiwan, Tao Yuan U Shin, Paite U Shin, Chi Shaw Earl Di. , S.C. 1, Rain 425, N.O. 7-3 (72) Inventor Wang Qi Ching Tai Wang, Tao Yuan Woo Shin, Paite Woo Shin, Qi Shaw Earl Di. , S.C. 1, Rain 425, N.O. 7-3

Claims (2)

[Claims] 1. A power supply circuit (1) comprising a moderator of IC1 is provided, which eliminates a noise signal by C1. (B) Input photocoupling circuit (PHOTO
A COUPLING CIRCUIT (2) is provided. PH1, R3, and R4 of the input photocoupling circuit (2) are wiper motor position opening / closing signals at the connection point E, and PH2, R2, and R5 are wiper fountain opening / closing at the connection point D. Signals, PH3, R1, and R6 are wiper intermittent opening / closing signals at the connection point C. (C) A reset circuit (3) is further provided, and the reset circuit (3) is composed of Q1, R7, R8, and R9, measures the voltage, and issues a reset signal when the voltage is lower than 4.5V. (D) Further, a microcomputer processing circuit (4) is provided, which consists of MPU of IC2, PB0, PB
1, the signal is input from PB2, the signal is output from PA0, and R11, R12, C4, C
5, a clock signal of OSC1 and OSC2 is formed from XL, and noise is removed by R10, C2, and C3. (E) A drive circuit (5) is further provided, and the output signal of the output signal is amplified by R13, Q2, R14, Q3, then drives the relay RL and outputs a control signal from the F point. . D1 is RL pulse prevention. (F) The power supply circuit (1) stabilizes the input voltage at both points A and B to a working voltage of 5V. (H) The IC2 processes the changes in the signals at the three points C, D and E by software, and issues a signal for controlling the wiping operation from the F point. (I) When the driver feels that the rain on the windshield directly affects the visibility while driving, turn the wiper switch to the intermittent position and then return it to the OFF position. At this time, the signal at point C changes and is stored in IC2. At the same time, the signal at the E point is read, output from the F point by the software processing of the IC2, and the first wiping operation is performed. (Nu) When it is felt that the visibility is affected by rain again while the vehicle is traveling, turn the wiper switch to the intermittent position, at which time the signal at point C changes and is stored in IC2.
At the same time, the signal at the E point is read, output from the F point by the software processing of IC2, and the second wiping operation is performed. The operation time of this time and the previous time is stored in IC2, and the time interval is repeated twice by software processing. (L) If, during the intermittent wiping, if the rain increases and it affects your visibility, turn the wiper switch off and then turn this wiper switch to the intermittent wiping position again to activate the wiper at the same time. The IC 2 operates repeatedly and repeatedly with the current wiping time and the previous wiping time interval as new time intervals. (Wo) During the intermittent wiping, to avoid the noise caused by the weakening of the rain and the friction between the wiper and the glass, the wiping operation can be slowed, that is, the time interval can be extended to further protect the wiper. When this happens, the wiper switch is turned off, but the rain collects on the windshield due to weaker rain, which affects the visibility after a longer time.When the rain affects the visibility, turn the wiper switch again to the intermittent wiping position. As a result, the time interval becomes longer and the wiper operating time naturally becomes longer. A microcomputer learning type intermittent wiper control device having the above configuration. 2. A computer processing circuit (4) according to the present invention.
The person driving the car turns the wiper switch to the intermittent position and then returns it to the OFF position, the first wiping time and the driver turns the wiper switch to the intermittent position, and the second wiping time is memorized. After doing this, the current and previous operation time interval ΔTO is repeated, and the wiper is intermittently wiped according to the interval time of ΔTO, and when the rain intensity changes and it is adjusted by the intuitive reaction of the driver, the microcomputer circuit this time The new interval time ΔT
1 and repeat again, and then wiper the wiper intermittently according to the new time interval of ΔT1 and switch O
2. The microcomputer learning type intermittent wiper control device according to claim 1, which is continued until it becomes FF.