CN106427904A - Novel windscreen wiper intermittent control system and control method thereof - Google Patents

Abstract

The invention discloses a novel wiper intermittent control system, comprising a wiper relay for controlling a wiper motor; a combination switch for controlling a power switch, the combination switch includes a wiper intermittent switch, a spray switch and a wiper high A low-speed switch; a body controller for collecting combined switch signals and outputting control signals; a washing motor for driving a washing pump; a wiper motor for driving a wiper; the invention also includes a new type of wiper intermittent control method. The invention avoids the influence of motor modification, uncertain motor parameters and unstable vehicle power supply voltage on the operation of the motor, improves the functional characteristics of the wiper, and further ensures the driving safety of the vehicle.

Description

A new type of wiper intermittent control system and its control method

technical field

The invention relates to the technical field of vehicle wiping, in particular to a novel intermittent control system for wiping and a control method thereof.

Background technique

The vehicle wiper system is an essential safety device for the car body. It needs to remove raindrops and dirt on the window in time according to the driver's needs, so as to ensure the driver has a good vision.

Wiper intermittent control is an important control method of wiper, and its functional characteristics are also an important characteristic that affects driving safety. Intermittent wiper control requires that the wiper motor can wipe the specified number of times in the working cycle, and can automatically reset. In the traditional wiper intermittent control, the working time and stop time of the motor in the cycle are determined according to the running speed of the corresponding motor, and the running speed of the motor is determined by the motor parameters at the rated voltage. In this control mode, if the motor is changed, the motor parameters are inaccurate or the power supply voltage is unstable, it will affect the running speed of the motor, thereby affecting the number of times the wiper is wiped, and then affecting the safety performance of the vehicle.

Contents of the invention

The object of the present invention is to provide a new type of wiper intermittent control system and its control method, which is used to solve the existing wiper intermittent need to be determined by the speed of the motor, the speed of the motor will be unstable due to various factors, Thereby affecting the number of wipes, thereby affecting the safety performance of the vehicle.

The technical solution adopted in this aspect to solve the technical problems is: a new type of wiper intermittent control system, which is characterized in that it includes a wiper relay for controlling the wiper motor; and,

A combination switch for controlling the power switch, the combination switch includes a wiper intermittent switch, a spray switch and a wiper high and low speed switch; and,

A body controller for collecting combination switch signals and outputting control signals; and,

a washing motor for driving a washing pump; and,

A wiper motor for driving the wiper;

The wiper relays are respectively connected with the wiper motor and the barrier switch, the combination switch is connected with the vehicle body controller and the wiper motor respectively, and the vehicle body controller is connected with the wiper relay and the washing motor respectively.

Further, the wiper motor includes 53 pins, 53b pins, 31 pins, a switch 53a, and a return contact 31b; the 53 pins and 53b pins are connected to the combined switch, and the 53a pins and the return contact The point 31b is connected with the wiper relay; the 31 pin is connected with the washing motor.

Further, the control signal includes a return signal and an intermittent trigger signal; the return signal is provided by a return contact, and the return signal is a square wave signal; the intermittent trigger signal is provided by a wiper intermittent switch, and the intermittent trigger signal is a square wave wave signal, the period of the intermittent trigger signal is twice the period of the return signal.

A novel intermittent control method for wipers, utilizing a novel intermittent control system for wipers, is characterized in that it specifically includes the following steps:

Step 1), the body controller receives the return signal, and judges whether the return signal has a rising edge after the first falling edge;

Step 2), if there is a rising edge, the body controller disconnects the wiper low-speed output;

Step 3), judging whether the wiper is in the return area;

Step 4), if the wiper does not return to the return area, continue to supply power to the wiper motor through the return signal pin until the wiper returns to the return area;

Step 5), after the wiper returns to its position, when the intermittent trigger signal reaches the rising edge again, continue to perform step 1).

Furthermore, when the intermittent trigger signal is a rising edge, it means that the low-speed output of the wiper of the body controller outputs a high level, the low-speed wiper relay pulls in, the pin 53 of the wiper motor is energized, and the wiper motor runs at a low speed;

The falling edge of the return signal indicates that pin 31b and pin 31 of the wiper motor are connected, and when the return signal is a rising edge, it indicates that 31b and 51a of the wiper motor are connected.

Further, the period of the intermittent trigger signal is 10s, and the period of the return signal is 5s.

The beneficial effects of the present invention are:

The vehicle body controller of the present invention completes the intermittent output control of the wiper motor by collecting and judging the return signal, thereby ensuring the number of times the wiper wipes within a cycle. The invention avoids the influence of motor modification, uncertain motor parameters and unstable vehicle power supply voltage on the operation of the motor, improves the functional characteristics of the wiper, and further ensures the driving safety of the vehicle.

Description of drawings

Fig. 1 is the electrical control schematic diagram of the present invention;

Fig. 2 is a schematic diagram of the intermittent trigger signal and return signal during the intermittent wiper process of the present invention;

Fig. 3 is the flowchart of control method of the present invention;

In the figure: 1 wiper relay; 2 combination switch; 3 wiper intermittent switch; 4 wiper low-speed output; 5 return signal; 6 body controller; 7 washing motor; 8 wiper motor.

detailed description

As shown in Figure 1, a new type of wiper intermittent control system includes a wiper relay 1 for controlling the wiper motor; a combination switch 2 for controlling the power switch, the combination switch includes a wiper intermittent switch 3, a spray Switch and wiper high and low speed switch 4; body controller 6 for collecting combined switch signals and outputting control signals; washing motor 7 for driving the washing pump; wiper motor 8 for driving the wiper; wiper relay 1 is respectively connected with the wiper motor 8 and the combination switch 2, the combination switch 2 is connected with the body controller 6 and the wiper motor 8 respectively, and the body controller 6 is connected with the wiper relay 1 and the washing motor 7 respectively.

The wiper motor includes 53 pins, 53b pins, 31 pins, switch 53a, and return contact 31b; 53 pins and 53b pins are connected to the combination switch, 53a pins and return contact 31b are connected to the wiper relay; 31 pins are connected to the washing machine The motor is connected.

As shown in Figure 2, the control signal includes a return signal and an intermittent trigger signal; the return signal is provided by the return contact, and the return signal is a square wave signal; the intermittent trigger signal is provided by the wiper intermittent switch, and the intermittent trigger signal is a square wave wave signal, the period of the intermittent trigger signal is twice the period of the return signal. The period of the intermittent trigger signal is 10s, and the period of the return signal is 5s.

As shown in Figure 3, a new type of intermittent wiper control method, using a new type of intermittent wiper control system, specifically includes the following steps:

Step 1), the body controller receives the return signal, and judges whether the return signal has a rising edge after the first falling edge;

Step 2), if there is a rising edge, the body controller disconnects the wiper low-speed output;

Step 3), judging whether the wiper is in the return area;

Step 4), if the wiper does not return to the return area, continue to supply power to the wiper motor through the return signal pin until the wiper returns to the return area;

Step 5), after the wiper returns to its position, when the intermittent trigger signal reaches the rising edge again, continue to perform step 1).

When the intermittent trigger signal is a rising edge, it means that the wiper low-speed output of the body controller outputs a high level, the wiper low-speed relay is closed, the 53 pin of the wiper motor is energized, and the wiper motor runs at a low speed;

The falling edge of the return signal indicates that pin 31b and pin 31 of the wiper motor are connected, and when the return signal is a rising edge, it indicates that 31b and 51a of the wiper motor are connected.

When the wiper intermittent gear of the wiper combination switch is closed and the wiper intermittent trigger signal in the body controller is a rising edge, the wiper low-speed control pin of the body controller will output a high level to make the wiper low-speed relay close , the 53 feet of the wiper motor are powered, and the wiper runs at a low speed.

When pin 31b of the wiper motor is connected to pin 31 for the first time, the return signal is connected low, and the vehicle body controller collects the falling edge of the return signal. Afterwards, when 31b of the wiper motor was connected with 53a for the first time, the return signal was connected to a high level. After 0.1s of the rising edge of the return signal, the body controller will set the wiper low-speed output pin low, and the wiper low-speed relay will be disconnected.

When the wiper low-speed relay is disconnected, if the wiper is not in the return area, then pin 31b of the wiper motor is connected to pin 53a, and pin 53a will continue to supply power to pin 53 of the wiper motor through pin 31b, driving the wiper motor to continue Run at a low speed until pin 31b and pin 31 of the wiper motor are connected. At this time, the motor coil will generate an instantaneous reverse electromotive force, so that the wiper just stops at the required return area.

After a period of time after the wiper returns, when the trigger signal reaches the rising edge again, the body controller will continue to work according to the above logic. The intermittent wiping action of the wiper is to wipe twice, stop, wipe twice again, stop, and so on until the intermittent wiper switch is turned off; an intermittent working cycle is 10s, and the wiper arm is required to wipe twice within the cycle.

When the body controller detects that the wiper low-speed relay coil is short-circuited to ground, it will immediately stop the wiper low-speed output.

Although the specific implementation of the present invention has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the present invention. On the basis of the technical solution of the present invention, those skilled in the art can make various Modifications or variations are still within the protection scope of the present invention.

Claims (6)

1. a kind of new windscreen wiper Intermittent control system, is characterized in that, including the Wiper Relay for controlling rain shaving electrical machine； And,

For controlling the cubicle switch of on and off switch, cubicle switch includes windscreen wiper pause switch, spray switch and the high low speed of windscreen wiper Switch；And,

For gathering cubicle switch signal, and the car body controller of output control signal；And,

For driving the washing motor of washing pump；And,

For driving the rain shaving electrical machine of windscreen wiper；

Described Wiper Relay respectively with rain shaving electrical machine and intercept switch and be connected, described cubicle switch respectively with Body Control Device is connected with rain shaving electrical machine, and described car body controller is connected with Wiper Relay and washing motor respectively.

2. a kind of new windscreen wiper Intermittent control system according to claim 1, is characterized in that, described control signal bag Include return signal and interval trigger；Return signal is provided by return contact, and return signal is square-wave signal；Interval triggering letter Number provided by windscreen wiper pause switch, interval trigger is square-wave signal, the cycle of interval trigger is the week of return signal 2 times of phase.

3. a kind of new windscreen wiper Intermittent control system according to claim 1, is characterized in that, described rain shaving electrical machine bag Include 53 feet, 53b foot, 31 feet, switch 53a, return contact 31b；53 described feet are connected with cubicle switch with 53b foot, described 53a foot is connected with Wiper Relay with return contact 31b；31 described feet are connected with washing motor.

4. a kind of new windscreen wiper tapping mode method, using a kind of new windscreen wiper described in claim 1-3 any one Intermittent control system, is characterized in that, specifically includes following steps：

Step 1), car body controller accept return signal, and on judging whether return signal occurs after first time trailing edge Rise edge；

Step 2), if there is rising edge, then car body controller disconnects the output of windscreen wiper low speed；

Step 3), judge windscreen wiper whether in return region；

Step 4) if windscreen wiper is not returned to return region, by return signal pins, power supply is continued to rain shaving electrical machine, until windscreen wiper Return to return region；

Step 5), after windscreen wiper return, after interval trigger reaches rising edge again, continue executing with step 1) operation.

5. a kind of new windscreen wiper tapping mode method according to claim 4, is characterized in that, interval trigger is upper Rise along when, represent car body controller windscreen wiper low speed output output high level, windscreen wiper slow-speed relay adhesive, the 53 of rain shaving electrical machine Foot obtains electric, rain shaving electrical machine low-speed running；

The trailing edge of return signal represents that the 31b foot of rain shaving electrical machine and 31 feet are connected, and represents windscreen wiper when return signal is for rising edge The 31b and 51a of motor connects.

6. a kind of new windscreen wiper tapping mode method according to claim 5, is characterized in that, the week of interval trigger Phase is 10s, and the cycle of return signal is 5s.