CN105059249A - Intelligent windscreen wiper and defogging control device of automobile front windshield - Google Patents

Abstract

The invention relates to an intelligent windshield wiper and defogging control device for automobiles, which includes a wiper, a wiper transmission unit, a defogging device, a defogging transmission unit, a drive unit, a control unit, a detection module, and a single-chip microcomputer , where the wiper is connected to the output end of the wiper transmission unit; the input end of the wiper transmission unit is connected to the output end of the drive unit and the control unit; the defogging device is connected to the output end of the defogging transmission unit; The input end is connected with the drive unit and the output end of the control unit; the input end of the drive unit is connected with the output end of the control unit; the input end of the control unit is connected with the output end of the single-chip microcomputer; the input end of the single-chip microcomputer is connected with the detection module. The invention can provide the driver with automatic dual functions of defogging and rain wiping, and the defogging and rain wiping can work independently or synchronously. It can minimize the interference to the driver by operating the wiper and manually defogging, thereby improving the safety of road driving.

Description

A car front windshield intelligent wiper and defogging control device

technical field

The invention belongs to the technical field of automobile intelligent devices, and in particular relates to an automobile front windshield intelligent wiper and defogging control device.

Background technique

With the development of intelligent control technology, the intelligent level of automobiles is getting higher and higher, which makes the comfort and safety of automobiles greatly developed. But there are still problems to be solved for safe driving. In rainy weather, the driver needs to manually adjust the action of the wiper, which distracts the driver's attention. When the temperature outside the car is low and the temperature inside the car is high, the temperature of the front windshield of the car is low, and the water vapor in the car is pre-condensed and condensed on the inner surface of the front windshield of the car to form fog. When it gathers to a certain extent, it will seriously affect The driver's line of sight may even freeze and condense on the front screen when the temperature is too low.

Intelligent wiper device has been arranged at present, but can only solve the driving safety problem that manual operation wiper causes. For the problem that the water fog formed on the surface of the front windshield caused by the temperature difference between the inside and outside affects the driving line of sight, there are currently several methods as follows. First, the driver manually erases from time to time, which distracts the driver's attention and is not conducive to driving safety. Second, some vehicles heat the glass through warm air, but often the effect is not very good, especially in winter when the car is running, the front windshield is constantly cooling, and the effect of heating the glass is limited. The 3rd, reduce the temperature in the car, greatly reduce the comfort of riding. These several methods all can not well solve the problem that the front windshield of automobile becomes foggy, so be badly in need of a kind of device that can solve this problem, especially for the passenger vehicle of operation.

Contents of the invention

Aiming at the defects and deficiencies of the prior art, the object of the present invention is to provide an intelligent automobile front windshield wiper and defogging control device, so as to realize automatic control of the wiper and automatic defogging, reduce driving interference, and ensure driving safety .

The purpose of the present invention and the solution to its technical problems are achieved by adopting the following technical solutions. According to the present invention, a smart windshield wiper and defogging control device for automobiles includes a wiper, a wiper transmission unit, a defogging device, a defogging transmission unit, a drive unit, a control unit, a detection module, and a single-chip microcomputer. , wherein: the wiper is connected to the output end of the wiper transmission unit; the input end of the wiper transmission unit is connected to the output end of the drive unit and the control unit; the defogging device is connected to the The output end of the demist transmission unit is connected; the input end of the demist transmission unit is connected with the output end of the drive unit and the control unit; the input end of the drive unit is connected with the output end of the control unit connected; the input end of the control unit is connected with the output end of the single-chip microcomputer; the input end of the single-chip microcomputer is connected with the detection module; sensor, the temperature sensor installed in the front windshield of the car, the raindrop sensor installed in the A-pillar of the car, and the humidity sensor installed in the front windshield of the car.

The object of the present invention and the solution to its technical problems can also be further realized by adopting the following technical measures.

The aforementioned intelligent wiper and defogging control device for the front windshield of an automobile, wherein the wiper transmission unit and the defogging transmission unit include a magnetic powder clutch.

The aforementioned smart wiper and defogging control device for the front windshield of an automobile, wherein the drive unit is composed of a drive motor and 3 bevel gears, wherein the input end of the drive motor is connected to the output end of the control unit, and its output The end is connected with the input end of the bevel gear 1, and the output end of the bevel gear 1 is connected with the input end of the bevel gear 2 connected to the input end of the wiper transmission unit and the input end of the bevel gear 3 connected with the input end of the defogging transmission unit.

The aforementioned intelligent wiper and defogging control device for the front windshield of an automobile, wherein the two bevel gears connected to the input end of the wiper transmission unit and the input end of the defogging transmission unit are identical.

The aforementioned intelligent wiper and defogging control device for the front windshield of an automobile, wherein the defogging device is arranged at the same position on the inner surface of the windshield as the wiper.

The aforesaid smart windshield wiper and defogging control device for automobiles, wherein the control unit is composed of a control circuit connected to three relays, the input end of the control circuit is connected to the output end of the single-chip microcomputer, and the control unit The output end of the circuit is connected to the input ends of three relays, and the output ends of the three relays are respectively connected to the input end of the wiper transmission unit, the input end of the drive unit and the input end of the defogging transmission unit.

The aforementioned intelligent wiper and defogging control device for the front windshield of an automobile, wherein the head of the defogging device has a rubber strip and the rubber strip keeps in contact with the inner surface of the windshield. Driven by the motor, The rubber strip moves reciprocatingly while keeping in contact with the inner surface of the windshield, so as to continuously scrape off the fog or frost on the inner surface of the windshield.

The aforementioned intelligent wiper and defogging control device for the front windshield of an automobile, wherein the magnetic powder clutch is of the normally open type, and its size is selected according to the size of the driven wiper and defogging device.

The aforementioned smart wiper and defogging control device for the front windshield of an automobile, the single-chip microcomputer adopts the STC89C52 single-chip microcomputer. STC89C52 is a low-power, high-performance CMOS 8-bit microcontroller with 8K in-system programmable Flash memory. On a single chip, with smart 8-bit CPU and in-system programmable Flash, STC89C52 provides highly flexible and effective solutions for many embedded control application systems.

The driving part of the demisting device used in the present invention is shared with the wiper, which simplifies the structure of the control device.

The greatest feature of the present invention is that it can effectively remove the fog collection of the front windshield, and the defogging device and the automobile wiper can realize automatic control and work independently or simultaneously. When working at the same time, it can realize synchronous control, and it is in the coincident position on the windshield, which will minimize the impact on the driver's vision.

Description of drawings

Fig. 1 is a schematic diagram of the composition and structure of an automobile front windshield intelligent wiper and defogging control device according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the composition and structure of an automobile front windshield intelligent wiper and defogging control device according to another embodiment of the present invention.

Detailed ways

In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the following will be combined with the accompanying drawings and preferred embodiments to describe a car front windshield intelligent wiper and defogging control device according to the present invention. Its specific implementation, structure, feature and effect thereof are described in detail as follows.

Example 1

Please refer to Figure 1, which is a schematic diagram of the composition and structure of an automobile front windshield intelligent wiper and defogging control device according to an embodiment of the present invention. The device includes a wiper, a wiper transmission unit, a defogging device, and a defogging transmission unit , drive unit, control unit, detection module and microcontroller. The wiper is connected to the output terminal of the wiper transmission unit; the input terminal of the wiper transmission unit is connected to the output terminal of the drive unit and the control unit; the defogging device is connected to the output terminal of the defogging transmission unit; the input terminal of the defogging transmission unit The terminal is connected with the drive unit and the output terminal of the control unit; the input terminal of the drive unit is connected with the output terminal of the control unit; the input terminal of the control unit is connected with the output terminal of the single-chip microcomputer; the input terminal of the single-chip microcomputer is connected with the detection module. The detection module includes an outside temperature sensor installed at the A-pillar of the automobile, an interior temperature sensor installed at the front windshield inside the car, a raindrop sensor installed at the A-pillar of the automobile, and a windshield installed on the inside of the automobile. humidity sensor.

Example 2

Please refer to FIG. 2 , which is a schematic composition diagram of an automobile front windshield intelligent wiper and defogging control device according to another embodiment of the present invention. In this embodiment, the control unit is composed of a control circuit and 3 relays, relay 1, relay 2, and relay 3; the drive unit is composed of a drive motor and 3 bevel gears, that is, bevel gear 1, bevel gear 2, and bevel gear 3. ; The wiper transmission unit is composed of a magnetic powder clutch and a deceleration mechanism; the defogging transmission unit is composed of a magnetic powder clutch and a deceleration mechanism. Wherein the input end of the above-mentioned control circuit is connected to the output end of the single-chip microcomputer, and its output end is connected to the input end of the above-mentioned relay; the output ends of the above-mentioned relay 1, relay 2, and relay 3 are respectively connected to the input end and the drive The input end of the motor and the input end of the magnetic powder clutch in the demisting transmission unit. The output end of the above drive motor is connected to one end of the bevel gear 1, the other end of the bevel gear 1 is respectively connected to one end of the bevel gear 2 and the bevel gear 3, and the other ends of the bevel gear 2 and the bevel gear 3 are connected to the wiper transmission unit and the wiper gear respectively. Magnetic powder clutch in mist transmission unit. The output end of the magnetic powder clutch is connected with the input end of the reduction mechanism.

The above-mentioned magnetic powder clutch belongs to the normally open type. When it is necessary to transmit power, the single-chip microcomputer sends an instruction signal, and after passing through the control circuit and the relay, the circuit of the magnetic powder clutch is connected, and the clutch is closed to transmit power. The size of the magnetic powder clutch is selected according to the size of the driven wiper and defogging device. The reduction mechanism maintains the configuration on the original vehicle. The control device has the following four working states.

(1) The smart wiper works alone. First, the microcontroller reads the signals of temperature sensor 1, temperature sensor 2, raindrop sensor, and humidity sensor, and compares them with the pre-stored information. When it rains outside, only the wipers need to work. The output signal of the single-chip microcomputer is connected to the relay 1 and the relay 2 through the control circuit, and the magnetic powder clutch 1 and the motor can work normally when they are energized. The raindrop sensor collects rain information, and transmits different signals to the single-chip microcomputer according to the size of the rain. The single-chip microcomputer obtains the signal and compares it with the pre-stored signal to judge and output high-speed, low-speed and intermittent action signals. When it rains heavily, it outputs a high-speed signal, when it rains moderately, it outputs a low-speed signal, and when it rains lightly, it outputs an intermittent action signal. At the same time, different signals of the single-chip microcomputer are converted into motor actions after passing through the control circuit, and then transmitted to the wiper through the bevel gear 1, bevel gear 2, and the reduction mechanism. At this time, because the magnetic powder clutch 2 is not energized and is in an idling state and does not transmit power, the defogging device does not work.

(2) When the intelligent defogging device works alone, first the microcontroller reads the signals of temperature sensor 1, temperature sensor 2, raindrop sensor, and humidity sensor, compares them with the pre-stored information, and judges that the temperature difference between the inside and outside of the car is large and the humidity inside the car is high. , It is not raining outside the car, only the defogging device needs to work. The output signal of the single-chip microcomputer is connected to the relay 2 and the relay 3 through the control circuit, and the magnetic powder clutch 2 and the motor can work normally when they are energized. The humidity information is collected by the humidity sensor, the temperature sensor 1 and the temperature sensor 2 collect the temperature information inside and outside the car, convert it into an electrical signal and transmit it to the single-chip microcomputer, and the single-chip microcomputer obtains the signal and compares it with the pre-stored signal to judge and output high-speed, low-speed and intermittent action signals. When the temperature outside the car is low and the humidity inside the car is high, the high-speed signal will be output. When the temperature difference between the inside and outside of the car is moderate and the humidity inside the car is too high, the low-speed signal will be output. When the temperature difference between inside and outside the car is not high and the humidity inside the car is high, the output will be intermittent. action signal. At the same time, the different signals of the single-chip microcomputer are converted into motor actions after passing through the control circuit, and then transmitted to the demister through the bevel gear 1, bevel gear 3, and the reduction mechanism, and the demister works. At this time, because the magnetic powder clutch 1 is not powered and is in an idling state and does not transmit power, the wiper device does not work.

(3) When the smart wiper and defogging device work at the same time, first the single-chip microcomputer reads the signals of temperature sensor 1, temperature sensor 2, raindrop sensor, and humidity sensor, and compares them with the pre-stored information. High humidity and rain outside the car require two devices to work at the same time. The output signal of the single-chip microcomputer is connected to the relay 1, the relay 2, and the relay 3 through the control circuit, the magnetic powder clutch 1 and the magnetic powder clutch 2, and the motor can work normally. The raindrop sensor and the humidity sensor collect the humidity information, the temperature sensor 1 and the temperature sensor 2 collect the temperature information inside and outside the car, convert it into an electrical signal and transmit it to the microcontroller. The single-chip microcomputer obtains the signal and compares it with the pre-stored signal to judge that the output to the motor is a high-speed, low-speed and intermittent action signal. When the rain outside the car is heavy and the humidity inside the car is high, a high-speed signal is output to the motor, and at the same time, an intermittent signal is output to the relay 2 according to the speed of the motor to ensure its intermittent connection, so that the operating frequency of the defogging device is the wiper operating frequency 1/n, the size of n depends on the humidity inside the car. When there is moderate rain outside the car and the humidity inside the car is too high, the low-speed signal is output to the motor, and at the same time, the intermittent signal is output to the relay 2 according to the speed of the motor to ensure that it is intermittently connected, so that the operating frequency of the defogging device is equal to the operating frequency of the wiper. 1/n, the size of n is determined according to the humidity in the car. When there is light rain outside the car and the humidity inside the car is high, output intermittent signals to the motor, and at the same time output intermittent signals to relay 2 according to the speed of the motor to ensure that it is intermittently connected, and ensure that the operating frequency of the defogging device is equal to the operating frequency of the wiper. 1/n, the size of n is determined according to the humidity in the car. At the same time, the different signals of the single-chip microcomputer are converted into motor action after the control circuit, and the relay is switched on and off, and are transmitted to the wiper and demister through the bevel gear 1, bevel gear 2, and bevel gear 3, and the reduction mechanism. Both work on signals.

(4) Neither the wiper nor the defogging device works. First, the MCU reads the signals of temperature sensor 1, temperature sensor 2, raindrop sensor, and humidity sensor, compares them with the pre-stored information, and judges that the temperature difference between inside and outside the car is small and the humidity inside the car is low. It's low, it's not raining outside the car, and neither need work.

Example 3

In yet another embodiment of the present invention, the wiper and the defogging device are located at the same position on the inside and outside of the front windshield, and the bevel gear 2 and the bevel gear 3 are the same, which makes it possible to pass An intermittent signal is output to ensure the synchronous operation of the wiper and defogging device. Reduce disturbance to the driver.

When the intelligent wiper and the intelligent defogging device work at the same time, when the wiper and the defogging device are reset, the signal of the relay 2 is turned on and off, so as to ensure the power transmission without impact and the synchronous work of the wiper and the defogging device .

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make some changes or modify them into equivalent embodiments with equivalent changes, but any content that does not depart from the technical solution of the present invention, according to the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments by the technical essence still belong to the scope of the technical solutions of the present invention.

Claims (9)

1. shield glass intelligent windscreen wiper and a demisting controlling device, is characterized in that, it comprises windscreen wiper, windscreen wiper gear unit, demister, demist gear unit, driver element, control unit, detection module, micro controller system, wherein:

Described windscreen wiper is connected with the mouth of described windscreen wiper gear unit;

The input end of described windscreen wiper gear unit is connected with the mouth of described driver element and control unit;

Described demister is connected with the mouth of described demist gear unit;

The input end of described demist gear unit is connected with the mouth of described driver element and control unit;

The input end of described driver element is connected with the mouth of described control unit;

The input end of described control unit is connected with the mouth of described micro controller system;

The input end of described micro controller system is connected with described detection module;

Described detection module comprises the outer temperature sensor of the car being arranged on automobile A column place, is arranged on the vehicle interior temperature sensor at front windshield place in car, is arranged on the Raindrop sensor at automobile A column place and is arranged on the humidity sensor at front windshield place in car.

2. a kind of shield glass intelligent windscreen wiper according to right 1 and demisting controlling device, is characterized in that, includes magnetic-powder clutch in wherein said windscreen wiper gear unit and demist gear unit.

3. a kind of shield glass intelligent windscreen wiper according to right 1 and demisting controlling device, it is characterized in that, wherein said driver element is made up of drive motor and 3 finishing bevel gear cuters, wherein the input end of drive motor is connected with the mouth of control unit, its mouth is connected with the input end of finishing bevel gear cuter 1, and the mouth of this finishing bevel gear cuter 1 connects with the input end of the finishing bevel gear cuter 3 connecting demist gear unit input end with the input end of the finishing bevel gear cuter 2 being connected windscreen wiper gear unit input end.

4. a kind of shield glass intelligent windscreen wiper according to right 3 and demisting controlling device, is characterized in that, wherein said connection windscreen wiper gear unit input end is identical with the finishing bevel gear cuter being connected demist gear unit input end.

5. a kind of shield glass intelligent windscreen wiper according to right 1 or 4 and demisting controlling device, is characterized in that, wherein said demister is arranged on the Windshield inside face position identical with windscreen wiper.

6. a kind of shield glass intelligent windscreen wiper according to claim 1 and demisting controlling device, it is characterized in that, wherein said control unit is connected to form by control circuit and 3 relays, the input end of described control circuit connects the mouth of micro controller system, the mouth of described control circuit connects the input end of 3 relays, and described 3 its mouths of relay connect the input end of the input end of windscreen wiper gear unit, the input end of driver element and demist gear unit respectively.

7. a kind of shield glass intelligent windscreen wiper according to right 1 and demisting controlling device, it is characterized in that, the head of wherein said demister with adhesive tape and this adhesive tape and Windshield inside face keep in touch, under direct motor drive, this adhesive tape keeps and crank motion under Windshield inside face contact condition, thus the mist constantly scraped off on Windshield inside face or frost.

8. a kind of shield glass intelligent windscreen wiper according to right 2 and demisting controlling device, it is characterized in that, wherein said magnetic-powder clutch belongs to open type, and its size is chosen according to the size of driven windscreen wiper and demister.

9. a kind of shield glass intelligent windscreen wiper according to claim 1 and demisting controlling device, is characterized in that, described micro controller system adopts STC89C52 micro controller system.