CN113815566B - Variable-swing-frequency windscreen wiper and control method - Google Patents
Variable-swing-frequency windscreen wiper and control method Download PDFInfo
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- CN113815566B CN113815566B CN202111111514.0A CN202111111514A CN113815566B CN 113815566 B CN113815566 B CN 113815566B CN 202111111514 A CN202111111514 A CN 202111111514A CN 113815566 B CN113815566 B CN 113815566B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
- B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
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Abstract
The invention discloses a wiper with variable swinging frequency and a control method thereof, wherein the method for adjusting the swinging frequency of the wiper comprises the following steps: acquiring raindrop accumulation information, scraping difficulty information and scraping noise information in each region of the glass; calculating the influence degree of the raindrops according to the accumulation degree of the raindrops in the area; calculating scraping influence according to the scraping difficulty in the area; calculating noise influence according to scratch noise in the area; and calculating the swinging influence degree according to the raindrop influence degree and/or the scraping influence degree and/or the noise influence degree, and adjusting the swinging frequency of the windscreen wiper in the area according to the relation between the swinging influence degree and the swinging frequency. The invention solves the technical problem of adjusting the swinging frequency of the windscreen wiper in real time according to the accumulation condition of the rain drops in each area, the resistance and difficulty of the windscreen wiper in each area and the noise condition brought by the windscreen wiper in each area.
Description
Technical Field
The invention belongs to the technical field of intelligent windscreen wipers, and particularly relates to a windscreen wiper with variable swinging frequency and a control method.
Background
The oscillating frequency of the windscreen wiper is generally divided into three to four gears, a fixed oscillating frequency difference exists among different windscreen wiper gears, and the oscillating frequency of the windscreen wiper is controlled by manually or automatically adjusting the gears. Regarding the related technology of the oscillating frequency of the wiper, for example, a speed regulation control method, a speed regulation control system and a speed regulation controller of the wiper in chinese patent publication No. CN110015267a proposes a speed regulation control method of the wiper, which comprises the following steps: dividing an angle interval of one circle of motor rotation into four angle intervals by double Hall signals of double Hall sensors; setting a target angular velocity function of a motor for each divided angle interval, wherein the target angular velocity function is a piecewise function; and calculating target driving effective voltages corresponding to the target angular speeds through the target angular speeds expressed by the piecewise functions, and driving the motor to move through the target driving effective voltages in the unidirectional movement process of the motor so as to enable the motor to adjust the movement speed of the wiper based on the target driving effective voltages. The variable-speed movement of the wiper is controlled by controlling the driving effective voltage of the motor, for example, the wiper can be slowed down near a reversal point, the acceleration operation of the wiper is controlled in a certain mode in the middle area of the reversal point, and the wiping speed is improved, so that the running speed of the wiper in the whole wiping period is ensured to be adjustable, the elastic deformation of the wiper blade during high-speed wiping is reduced, and meanwhile, the reversal noise of the wiper is reduced. Chinese patent publication No. CN108819906a, "an intelligent wiper for car and control method", proposes a wiper blade comprising a motor, a four-bar mechanism, a wiper arm spindle, and a wiper blade; a rotating speed controller and a pressure sensor are arranged for the motor; the pressure sensor is connected with a rotating speed controller, and the rotating speed controller is connected with the motor; the rotating speed controller comprises a control chip, wherein the control chip comprises a storage module, a judging module and a rotating speed adjusting driving circuit; n pressure grade critical values are stored in the storage module in advance, the N pressure grade critical values are increased from bottom to top, and each pressure grade critical value corresponds to a speed grade adjusting value. According to the invention, manual adjustment is not needed, the size and frequency of the raindrops can be detected during raining, and then the speed and the suspension times of the wiper can be automatically controlled according to the detected size and frequency of the raindrops and other factors.
According to the technical scheme, the windscreen wiper speed is controlled according to the preset target angular speed in different subareas or is fixedly adjusted according to the size frequency of the raindrops. However, the above solutions are all capable of adjusting among a plurality of preset wiper speeds, and cannot adjust the wiper oscillation frequency (wiper speed) in real time according to the accumulation of raindrops in each area, the resistance and difficulty of wiper scraping in the area, and the noise caused by the wiper in the area. At present, a technical scheme for adjusting the swinging frequency of the wiper in real time according to the accumulation condition of raindrops in each area, the resistance and difficulty of wiping of the wiper in the area and the noise condition brought by the wiper in the area does not exist, and therefore, the wiper with the variable swinging frequency and a control method are provided.
Disclosure of Invention
The present invention is directed to a wiper blade with a variable oscillating frequency and a control method thereof.
The invention discloses a method for adjusting the swinging frequency of a windscreen wiper, which is characterized by comprising the following steps of:
and calculating the influence of the raindrops according to the accumulation degree of the raindrops in the area, and adjusting the swinging frequency of the windscreen wiper in the area according to the relation between the influence of the raindrops and the swinging frequency.
Preferably, the accumulation degree of the raindrops includes any one or more of accumulation amount of the raindrops per unit time, residual amount of the raindrops after scraping, time for re-covering the raindrops after scraping, impact force of the raindrops on the glass.
Preferably, the calculating the influence of the raindrops according to the accumulation degree of the raindrops in the area includes the steps of:
according to the accumulation amount of raindrops in unit time in the area and/or the influence of impact force of the raindrops on glass on the sight, calculating a rain potential influence value;
calculating a scraping effect influence value according to the influence of the scraped residual quantity of the raindrops and/or the time of re-covering of the scraped raindrops on the sight;
and calculating the influence degree of the raindrops according to the influence value of the rain potential and/or the influence value of the scraping effect.
Preferably, the adjusting the oscillating frequency of the wiper in the area according to the relation between the influence of the raindrops and the oscillating frequency is any one of calculating the oscillating frequency corresponding to the influence of the raindrops in the current area according to the functional relation between the influence of the raindrops and the oscillating frequency, which is obtained by training in advance, and adjusting the oscillating frequency of the wiper in the area according to the relation between the scope of the influence of the raindrops and the oscillating frequency, and calculating the oscillating frequency corresponding to the scope of the influence of the raindrops in the current area according to the preset corresponding relation between the scope of the influence of the raindrops and the oscillating frequency, and adjusting the oscillating frequency of the wiper in the area according to the oscillating frequency.
The invention discloses a method for adjusting the swinging frequency of a windscreen wiper, which is characterized by comprising the following steps of:
and calculating the scraping influence according to the scraping difficulty in the area, and adjusting the swinging frequency of the windscreen wiper in the area according to the relation between the scraping influence and the swinging frequency.
Preferably, the scraping difficulty comprises any one or more of scraping resistance information, glass surface smoothness information, wiper and glass contact surface friction information, material quality information in a scraping range and material volume information in the scraping range.
Preferably, the calculating the scraping effect according to the scraping difficulty in the area includes the steps of:
calculating a scraping difficulty influence value according to the relation between the smoothness information of the glass surface in the area and/or the friction information of the contact surface of the windscreen wiper and the glass and the scraping difficulty;
calculating a scraping resistance influence value according to the scraping resistance information in the area and/or the mass information of the substances in the scraping range and/or the relation between the volume information of the substances in the scraping range and the scraping difficulty;
and calculating the scraping influence degree according to the scraping difficulty influence value and/or the scraping resistance influence value.
Preferably, the adjusting the oscillating frequency of the wiper in the area according to the relation between the scraping influence degree and the oscillating frequency is any one of calculating the oscillating frequency corresponding to the scraping influence degree in the current area according to the functional relation between the scraping influence degree and the oscillating frequency, which is obtained by training in advance, and adjusting the oscillating frequency of the wiper in the area according to the oscillating frequency, calculating the oscillating frequency corresponding to the range of the scraping influence degree in the current area according to the corresponding relation between the scraping influence degree range and the oscillating frequency, which is set in advance, and adjusting the oscillating frequency of the wiper in the area according to the oscillating frequency.
The invention discloses a method for adjusting the swinging frequency of a windscreen wiper, which is characterized by comprising the following steps of:
and calculating noise influence according to the scraping noise in the area, and adjusting the swinging frequency of the windscreen wiper in the area according to the relation between the noise influence and the swinging frequency.
Preferably, the scraping noise includes any one or more of glass noise, wiper structure noise, impact noise.
Preferably, the calculating the noise influence according to the scraping noise in the area includes the steps of:
calculating a glass noise influence value according to the regional glass noise and/or the change condition of the glass noise;
calculating a wiper noise influence value according to the regional wiper noise and/or the change condition of the wiper noise;
calculating impact value of collision noise according to the area collision noise and/or the change condition of the collision noise;
and calculating the noise influence degree according to the glass noise influence value and/or the wiper noise influence value and/or the collision noise influence value.
Preferably, the adjusting the oscillating frequency of the wiper in the area according to the relation between the noise influence and the oscillating frequency is any one of calculating the oscillating frequency corresponding to the noise influence in the current area according to the functional relation between the noise influence and the oscillating frequency, which is obtained by training in advance, and adjusting the oscillating frequency of the wiper in the area according to the oscillating frequency, calculating the oscillating frequency corresponding to the range of the noise influence in the current area according to the corresponding relation between the noise influence range and the oscillating frequency, which is set in advance, and adjusting the oscillating frequency of the wiper in the area according to the oscillating frequency.
The invention discloses a method for adjusting the swinging frequency of a windscreen wiper, which is characterized by comprising the following steps of:
and calculating the swinging influence degree according to the raindrop influence degree and/or the scraping influence degree and/or the noise influence degree, and adjusting the swinging frequency of the windscreen wiper in the area according to the relation between the swinging influence degree and the swinging frequency.
The adjusting the swinging frequency of the windscreen wiper in the area according to the relation between the swinging influence degree and the swinging frequency is any one of calculating the swinging frequency corresponding to the swinging influence degree in the current area according to the functional relation between the swinging influence degree and the swinging frequency, which is obtained through training in advance, adjusting the swinging frequency of the windscreen wiper in the area, calculating the swinging frequency corresponding to the range of the swinging influence degree in the current area according to the corresponding relation between the swinging influence degree range and the swinging frequency, which is set in advance, and adjusting the swinging frequency of the windscreen wiper in the area.
A computer readable storage medium storing a computer program for electronic data exchange, wherein the computer program, when executed by a processor, causes a computer to perform the above method.
A variable oscillating frequency wiper blade, characterized by comprising: the device comprises a segmented wiper arm, a wiper arm swinging frequency control device, a control device and a control device, wherein the wiper arm swinging frequency control device comprises a data acquisition unit, a processor, a memory and one or more programs; the data acquisition unit is for detecting raindrop information, scratch information, and noise information, the one or more programs being stored in the memory and configured to be executed by the processor, the programs causing the computer to perform the method described above.
The invention has the advantages that:
(1) According to the method, the influence degree of the raindrops is calculated according to the accumulation degree of the raindrops in the area (considering the influence of the current vehicle glass or the state of the wiper on the removal effect of the raindrops or other attachments), and the swinging frequency of the wiper in the area is adjusted according to the relation between the influence degree of the raindrops and the swinging frequency.
(2) The scraping influence degree is calculated according to the scraping difficulty in the area, the swinging frequency of the windscreen wiper in the area is adjusted according to the relation between the raindrop influence degree and the swinging frequency, the swinging frequency of the segmented windscreen wiper can be effectively adjusted according to the difficulty of scraping the windscreen wiper in different areas of the vehicle glass and the situation of scraped objects, and damage to the windscreen wiper and the wiper blade is effectively avoided.
(3) According to the method, the influence of noise is calculated according to scraping noise in the area, the swinging frequency of the windscreen wiper in the area is adjusted according to the relation between the influence of noise and the swinging frequency, and the swinging frequency of the segmented windscreen wiper can be effectively adjusted according to the conditions of glass noise, structural noise of the windscreen wiper and collision noise of scraping objects generated during scraping of the windscreen wiper in different areas of the vehicle glass, so that the noise level of the windscreen wiper during operation is effectively reduced.
(4) According to the influence degree of raindrops and/or the influence degree of scraping and/or the influence degree of noise, the swing frequency of the windscreen wiper in the area is calculated and adjusted according to the relation between the influence degree of swing and the swing frequency, so that the swing frequency of the segmented windscreen wiper can be effectively controlled from multiple dimensions, and the swing of the segmented windscreen wiper in different areas of the vehicle glass can be accurately controlled.
Drawings
Fig. 1 is a flowchart illustrating steps of a method for adjusting a oscillating frequency of a wiper blade according to an embodiment of the present invention;
fig. 2 is a schematic view of a wiper blade with variable oscillating frequency according to an embodiment of the present invention;
fig. 3 is a logic diagram of a wiper arm wobble frequency control apparatus according to an embodiment of the invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail.
An embodiment of a method of adjusting a swinging frequency of a wiper blade according to the present invention is characterized by comprising:
acquiring accumulation degree information of raindrops in each region of the glass;
and calculating the influence of the raindrops according to the accumulation degree of the raindrops in the area, and adjusting the swinging frequency of the windscreen wiper in the area according to the relation between the influence of the raindrops and the swinging frequency.
In this embodiment, glass is divided into a plurality of regions in advance according to a predetermined rule (for example, division by unit area or division by region function, etc.), and information on the accumulation degree of raindrops in each region is acquired.
Preferably, the accumulation degree of the raindrops includes any one or more of accumulation amount of the raindrops per unit time, residual amount of the raindrops after scraping, time for re-covering the raindrops after scraping, impact force of the raindrops on the glass. In this embodiment, different application scenarios (for example, different vehicle types, different glass materials, different use environments, etc.) of the wiper correspond to different accumulation degree standards of the raindrops, including any one or more combinations of a raindrop accumulation amount in unit time, a residual quantity of the raindrops after scraping, a time for re-covering the raindrops after scraping, and an impact force of the raindrops on the glass.
Preferably, the calculating the influence of the raindrops according to the accumulation degree of the raindrops in the area includes the steps of:
according to the accumulation amount of raindrops in unit time in the area and/or the influence of impact force of the raindrops on glass in a certain range on the sight, calculating a rain potential influence value;
calculating a scraping effect influence value according to the influence of the scraped residual quantity of the raindrops and/or the time of re-covering of the scraped raindrops on the sight;
and calculating the influence degree of the raindrops according to the influence value of the rain potential and/or the influence value of the scraping effect.
In this embodiment, the calculating the rain potential influence value according to the accumulation amount of the raindrops in the unit time in the area and/or the influence of the impact force of the raindrops on the glass in a certain range on the sight is: the method comprises the steps of calculating a rain potential influence value according to the positive correlation between the rain drop accumulation amount in unit time and the rain potential influence value in an area, calculating the rain potential influence value according to the positive correlation between the average value or the maximum value of the impact force of the rain drops on the glass in a certain range and the rain potential influence value, and calculating any one of the rain potential influence values according to the rain drop accumulation amount in unit time in the area and the positive correlation between the average value or the maximum value of the impact force of the rain drops on the glass in a certain range and the rain potential influence value, wherein the rain potential influence value is represented by a variable m.
The scraping effect influence value is calculated according to the influence of the residual quantity of the scraped raindrops and/or the time of the re-coverage of the scraped raindrops on the sight line, the scraping effect influence value is calculated according to the positive correlation of the residual quantity of the scraped raindrops and the scraping effect influence value, the scraping effect influence value is calculated according to the negative correlation of the re-coverage time of the scraped raindrops and the scraping effect influence value, the scraping effect influence value is calculated according to the positive correlation of the residual quantity of the scraped raindrops and the scraping effect influence value and the negative correlation of the re-coverage time of the scraped raindrops and the scraping effect influence value, and the scraping effect influence value is expressed by a variable n.
The raindrop influence degree is calculated according to the positive correlation relation between the raindrop influence degree and the raindrop influence value and/or the scraping effect influence value, and the raindrop influence degree is represented by a variable a.
In table a, A1 to A3 represent different embodiments for calculating the raindrop influence degree a, wherein the raindrop influence value m and the scratch effect influence value n referred to in table a are calculated by using the calculation formulas in the above embodiments.
Table a different embodiments for calculating the degree of raindrop influence
Preferably, the adjusting the oscillating frequency of the wiper in the area according to the relation between the influence of the raindrops and the oscillating frequency is any one of calculating the oscillating frequency corresponding to the influence of the raindrops in the current area according to the functional relation between the influence of the raindrops and the oscillating frequency, which is obtained by training in advance, and adjusting the oscillating frequency of the wiper in the area according to the relation between the scope of the influence of the raindrops and the oscillating frequency, and calculating the oscillating frequency corresponding to the scope of the influence of the raindrops in the current area according to the preset corresponding relation between the scope of the influence of the raindrops and the oscillating frequency, and adjusting the oscillating frequency of the wiper in the area according to the oscillating frequency. In this embodiment, the function relationship y=o (a) between the raindrop influence and the oscillation frequency obtained by training in advance is a linear or nonlinear increasing function, the raindrop influence a of a certain area is calculated according to any one of the table a, the oscillation frequency y is calculated by substituting the function relationship y=o (a), and the oscillation frequency of the wiper in the area is adjusted according to the oscillation frequency y.
In another preferred embodiment, a method for adjusting a swinging frequency of a wiper blade according to the present invention includes:
obtaining scraping difficulty information in each region of the glass;
and calculating the scraping influence according to the scraping difficulty in the area, and adjusting the swinging frequency of the windscreen wiper in the area according to the relation between the scraping influence and the swinging frequency.
In this embodiment, glass is divided into a plurality of areas according to a certain rule (for example, division according to a unit area or division according to an area function, etc.), and scratch difficulty information of each area is acquired.
Preferably, the scraping difficulty comprises any one or more of scraping resistance information, glass surface smoothness information, wiper and glass contact surface friction information, material quality information in a scraping range and material volume information in the scraping range. In this embodiment, different application scenarios (for example, different vehicle types, different glass materials, different use environments, etc.) of the wiper correspond to different standards of scraping difficulty, including any one or more of scraping resistance information, glass surface smoothness information, friction information of a contact surface between the wiper and the glass, substance mass information within a scraping range, substance mass average value within a scraping range, substance mass distribution variance value within a region, etc., note that scraping resistance information includes but is not limited to a scraping resistance value, a scraping resistance average value, a scraping resistance extremum value, etc., glass surface smoothness information includes but is not limited to glass surface smoothness, variance of surface smoothness within a region, average value of surface smoothness within a region, etc., friction information of a contact surface between the wiper and the glass includes but is not limited to a friction value, a friction change value, a friction average value, a friction extremum value, a friction variance value within a region, etc., substance mass distribution variance value within a scraping range, etc., and substance volume information within a scraping range includes but is not limited to a substance volume value, a substance volume average value, a substance distribution variance value within a region, etc.
Preferably, the calculating the scraping effect according to the scraping difficulty in the area includes the steps of:
calculating a scraping difficulty influence value according to the relation between the smoothness information of the glass surface in the area and/or the friction information of the contact surface of the windscreen wiper and the glass and the scraping difficulty;
calculating a scraping resistance influence value according to the scraping resistance information in the area and/or the mass information of the substances in the scraping range and/or the relation between the volume information of the substances in the scraping range and the scraping difficulty;
and calculating the scraping influence degree according to the scraping difficulty influence value and/or the scraping resistance influence value.
In this embodiment, the calculating the scratch difficulty influence value according to the information of the smoothness of the glass surface in the area and/or the relationship between the friction information of the contact surface of the wiper and the glass and the scratch difficulty is: the method comprises the steps of calculating a scraping difficulty influence value according to a negative correlation between the smoothness of the glass surface in a region and the scraping difficulty influence value, calculating the scraping difficulty influence value according to a positive correlation between the average value or the maximum value of the friction force of the contact surface of the windscreen wiper and the glass and the scraping difficulty influence value, and calculating any one of the scraping difficulty influence values according to a negative correlation between the smoothness of the glass surface in the region and the scraping difficulty influence value and a positive correlation between the average value or the maximum value of the friction force of the contact surface of the windscreen wiper and the glass and the scraping difficulty influence value, wherein the scraping difficulty influence value is represented by a variable u.
The scraping resistance influence value is calculated according to the scraping resistance information in the area and/or the mass information of the substances in the scraping range and/or the relation between the volume information of the substances in the scraping range and the scraping difficulty, and is: the method includes calculating a scratch resistance influence value according to a positive correlation of a scratch resistance in a region and a scratch resistance influence value, calculating a scratch resistance influence value according to a positive correlation of a mass average value or a maximum value in a scratch range and a scratch resistance influence value, and calculating any one of the scratch resistance influence values according to a weighted sum or product of any two or three of the above, the scratch resistance influence value being represented by a variable v.
The scraping influence degree is calculated according to the positive correlation relation between the scraping influence degree and the scraping difficulty influence value and/or the scraping resistance influence value, and the scraping influence degree is represented by a variable b.
B1 to B3 in table B represent different embodiments of calculating the scratch influence degree B, wherein the scratch difficulty influence value u and the scratch resistance influence value v referred to in table B are calculated using the calculation formulas in the above embodiments.
Table B different embodiments of calculating scratch effect
Preferably, the adjusting the oscillating frequency of the wiper in the area according to the relation between the scraping influence degree and the oscillating frequency is any one of calculating the oscillating frequency corresponding to the scraping influence degree in the current area according to the functional relation between the scraping influence degree and the oscillating frequency, which is obtained by training in advance, and adjusting the oscillating frequency of the wiper in the area according to the oscillating frequency, calculating the oscillating frequency corresponding to the range of the scraping influence degree in the current area according to the corresponding relation between the scraping influence degree range and the oscillating frequency, which is set in advance, and adjusting the oscillating frequency of the wiper in the area according to the oscillating frequency. In this embodiment, corresponding tables of different scratch influence ranges and oscillation frequencies are set in advance, the oscillation frequency is smaller as the scratch influence is larger, the scratch influence B of a certain area is calculated according to any one of the tables B, the oscillation frequency y is obtained according to the range where the scratch influence B is located and the corresponding table, and the oscillation frequency of the wiper in the area is adjusted according to the oscillation frequency y.
In another preferred embodiment, a method for adjusting a swinging frequency of a wiper blade according to the present invention includes:
obtaining scraping noise information in each region of the glass;
and calculating noise influence according to the scraping noise in the area, and adjusting the swinging frequency of the windscreen wiper in the area according to the relation between the noise influence and the swinging frequency.
In this embodiment, glass is divided into a plurality of areas in advance according to a certain rule (for example, division by unit area or division by area function, etc.), and the scratch noise information of each area is acquired.
Preferably, the scraping noise includes any one or more of glass noise, wiper structure noise, impact noise. In this embodiment, different application scenarios (for example, different vehicle types, different glass materials, different use environments, etc.) of the wiper correspond to different types and requirements of scraping noise, including any one or more combinations of glass noise, structural noise of the wiper, and collision noise.
Preferably, the calculating the noise influence according to the scraping noise in the area includes the steps of:
calculating a glass noise influence value according to the regional glass noise and/or the change condition of the glass noise;
calculating a wiper noise influence value according to the regional wiper noise and/or the change condition of the wiper noise;
calculating impact value of collision noise according to the area collision noise and/or the change condition of the collision noise;
and calculating the noise influence degree according to the glass noise influence value and/or the wiper noise influence value and/or the collision noise influence value.
In this embodiment, the calculating the glass noise influence value according to the regional glass noise and/or the change condition of the glass noise is: the method comprises the steps of calculating a glass noise influence value according to the positive correlation between the average value or the maximum value of the regional glass noise and the glass noise influence value, calculating a glass noise influence value according to the positive correlation between the average change value or the maximum change value or the minimum change value of the regional glass noise and the glass noise influence value, and calculating any one of the glass noise influence values according to the positive correlation between the average value or the maximum value of the regional glass noise and the average change value or the maximum change value or the minimum change value of the noise and the glass noise influence value, wherein the glass noise influence value is represented by a variable p.
The method comprises the steps of calculating a wiper noise influence value according to the regional wiper noise and/or the change condition of the wiper noise, wherein the wiper noise influence value is: the method comprises the steps of calculating a wiper noise influence value according to the positive correlation between the average value or the maximum value of the regional wiper noise and the wiper noise influence value, calculating a wiper noise influence value according to the positive correlation between the average change value or the maximum change value or the minimum change value of the regional wiper noise and the wiper noise influence value, and calculating any one of the wiper noise influence values according to the positive correlation between the average value or the maximum value of the regional wiper noise and the average change value or the maximum change value or the minimum change value of the noise and the wiper noise influence value, wherein the wiper noise influence value is represented by a variable q.
The impact noise influence value is calculated according to the area impact noise and/or the impact noise change condition, and is: the method comprises the steps of calculating a collision noise influence value according to the positive correlation between the average value or the maximum value of the regional collision noise and the collision noise influence value, calculating a collision noise influence value according to the positive correlation between the average change value or the maximum change value or the minimum change value of the regional collision noise and the collision noise influence value, and calculating any one of the collision noise influence values according to the positive correlation between the average value or the maximum value of the regional collision noise and the average change value or the maximum change value or the minimum change value of the noise and the collision noise influence value, wherein the collision noise influence value is represented by a variable w.
The noise influence degree is calculated according to the positive correlation between the noise influence degree and the glass noise influence value and/or the wiper noise influence value and/or the collision noise influence value, and the noise influence degree is represented by a variable c.
In table C, C1 to C7 represent different embodiments for calculating noise influence, wherein the glass noise influence value p, the wiper noise influence value q, and the impact noise influence value w are obtained by using the formulas in the above embodiments.
Table C different embodiments for calculating noise impact level
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Preferably, the adjusting the oscillating frequency of the wiper in the area according to the relation between the noise influence and the oscillating frequency is any one of calculating the oscillating frequency corresponding to the noise influence in the current area according to the functional relation between the noise influence and the oscillating frequency, which is obtained by training in advance, and adjusting the oscillating frequency of the wiper in the area according to the oscillating frequency, calculating the oscillating frequency corresponding to the range of the noise influence in the current area according to the corresponding relation between the noise influence range and the oscillating frequency, which is set in advance, and adjusting the oscillating frequency of the wiper in the area according to the oscillating frequency. In this embodiment, the function relation y=h (c) between the noise influence degree and the oscillating frequency obtained by training in advance is a linear or nonlinear subtraction function, the noise influence degree c of a certain area is calculated according to any one of the table a, the oscillating frequency y is calculated by substituting the function relation y=h (c), and the oscillating frequency of the wiper in the area is adjusted according to the oscillating frequency y.
In another preferred embodiment, a method for adjusting a swinging frequency of a wiper blade according to the present invention is shown in fig. 1, and includes:
acquiring raindrop accumulation information, scraping difficulty information and scraping noise information in each region of the glass;
calculating the influence degree of the raindrops according to the accumulation degree of the raindrops in the area;
calculating scraping influence according to the scraping difficulty in the area;
calculating noise influence according to scratch noise in the area;
and calculating the swinging influence degree according to the raindrop influence degree and/or the scraping influence degree and/or the noise influence degree, and adjusting the swinging frequency of the windscreen wiper in the area according to the relation between the swinging influence degree and the swinging frequency.
In this embodiment, the oscillation influence degree is represented by a variable x according to the positive correlation between the oscillation influence degree and the raindrop influence degree, the negative correlation between the oscillation influence degree and the raindrop influence degree, and the negative correlation between the oscillation influence degree and the noise influence degree.
In table D, D1 to D7 represent different embodiments for calculating the swing influence degree, wherein the rain influence degree a, the scratch influence degree b, and the noise influence degree c in table D are obtained by using the formulas in the above embodiments.
Table D different embodiments for calculating the wobble influence degree
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The adjusting the swinging frequency of the windscreen wiper in the area according to the relation between the swinging influence degree and the swinging frequency is any one of calculating the swinging frequency corresponding to the swinging influence degree in the current area according to the functional relation between the swinging influence degree and the swinging frequency, which is obtained through training in advance, adjusting the swinging frequency of the windscreen wiper in the area, calculating the swinging frequency corresponding to the range of the swinging influence degree in the current area according to the corresponding relation between the swinging influence degree range and the swinging frequency, which is set in advance, and adjusting the swinging frequency of the windscreen wiper in the area. In this embodiment, a corresponding table of different oscillation influence ranges and oscillation frequencies is set in advance, the greater the oscillation influence is, the greater the oscillation frequency is, the oscillation influence x of a certain area is calculated according to any one of the tables D, the oscillation frequency y is obtained according to the range of the oscillation influence x and the corresponding table, and the oscillation frequency of the wiper in the area is adjusted according to the oscillation frequency y.
A computer readable storage medium storing a computer program for electronic data exchange, wherein the computer program, when executed by a processor, causes a computer to perform the above method.
A variable oscillating frequency wiper blade, characterized by comprising: the device comprises a segmented wiper arm, a wiper arm swinging frequency control device, a control device and a control device, wherein the wiper arm swinging frequency control device comprises a data acquisition unit, a processor, a memory and one or more programs; the data acquisition unit is for detecting raindrop information, scratch information, and noise information, the one or more programs being stored in the memory and configured to be executed by the processor, the programs causing the computer to perform the method described above. In this embodiment, as shown in fig. 2, a schematic view of a wiper structure with a variable oscillating frequency is shown, the wiper arm 1 is divided into 3 sections, and the wiper arm oscillating frequency control device 2 controls each section of wiper through a link structure. The schematic logic structure of the wiper arm swing frequency control device 2 is shown in fig. 3, and the device comprises a processor, a memory and a data acquisition unit, wherein the processor executes the method.
Of course, those skilled in the art will recognize that the above embodiments are merely illustrative of the present invention and not intended to be limiting, and that changes and modifications of the above embodiments are within the scope of the present invention.
Claims (3)
1. A method of adjusting a wiper blade oscillating frequency, comprising:
calculating the influence of the raindrops according to the accumulation degree of the raindrops in the area, and adjusting the swinging frequency of the windscreen wiper in the area according to the relation between the influence of the raindrops and the swinging frequency;
the raindrop influence degree is calculated according to the accumulation degree of raindrops in the region, and the method comprises the following steps: according to the accumulation amount of raindrops in unit time in the area and/or the influence of impact force of the raindrops on glass on the sight, calculating a rain potential influence value; calculating a scraping effect influence value according to the influence of the scraped residual quantity of the raindrops and/or the time of re-covering of the scraped raindrops on the sight; calculating the influence degree of the raindrops according to the influence value of the rain potential and the influence value of the scraping effect;
the method is characterized in that the rain potential influence value is calculated according to the influence of the rain drop accumulation amount in unit time and/or the impact force of the rain drop on the glass on the sight, and is as follows: calculating a rain potential influence value according to the positive correlation between the rain drop accumulation amount in the area and the rain potential influence value, calculating the rain potential influence value according to the positive correlation between the average value or the maximum value of the impact force of the rain drop on the glass in a certain range and the rain potential influence value, and calculating any one of the rain potential influence values according to the rain drop accumulation amount in the area and the positive correlation between the average value or the maximum value of the impact force of the rain drop on the glass in a certain range and the rain potential influence value;
the scraping effect influence value is calculated according to the influence of the scraped raindrop residual quantity and/or the scraped raindrop re-coverage time on the sight, and is: any one of a scratch effect influence value is calculated from a positive correlation of a post-scratch raindrop residual amount and the scratch effect influence value, a scratch effect influence value is calculated from a negative correlation of a post-scratch raindrop re-coverage time and the scratch effect influence value, and a scratch effect influence value is calculated from a positive correlation of a post-scratch raindrop residual amount and the scratch effect influence value and a negative correlation of a post-scratch raindrop re-coverage time and the scratch effect influence value.
2. The method of adjusting a swinging frequency of a wiper blade according to claim 1, wherein the accumulation degree of the raindrops includes any one or more of a raindrop accumulation amount per unit time, a raindrop residue amount after wiping, a time for which the raindrops are re-covered after wiping, and an impact force of the raindrops on glass.
3. A variable oscillating frequency wiper blade, characterized by comprising: the device comprises a segmented wiper arm, a wiper arm swinging frequency control device, a control device and a control device, wherein the wiper arm swinging frequency control device comprises a data acquisition unit, a processor, a memory and one or more programs; the data acquisition unit is for detecting raindrop information, scratch information, and noise information, the one or more programs being stored in the memory and configured to be executed by the processor, the programs causing the computer to perform the method of any of claims 1-2.
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