CN111284309B

CN111284309B - Sun shield control method and sun shield control device

Info

Publication number: CN111284309B
Application number: CN202010083628.8A
Authority: CN
Inventors: 唐先红; 石林荣; 张安婧
Original assignee: Shanghai Kostal Huayang Automotive Electric Co Ltd; Kostal Shanghai Mechatronic Co Ltd
Current assignee: Shanghai Kostal Huayang Automotive Electric Co Ltd; Kostal Shanghai Mechatronic Co Ltd
Priority date: 2020-02-12
Filing date: 2020-02-12
Publication date: 2022-03-29
Anticipated expiration: 2040-02-12
Also published as: CN111284309A

Abstract

The invention discloses a sun-shading board control method and a sun-shading control device. The sun shield control method is applied to a vehicle, the vehicle comprises a vehicle body, a driving device and a sun shield, the sun shield comprises a main plate and an expansion plate connected to the main plate in a sliding mode, the main plate is connected in the vehicle body in a rotating mode, and the driving device is connected between the main plate and the expansion plate; the method comprises the following steps: receiving an external signal in real time; when the external signal is a trigger signal, the driving device is controlled to drive the expansion board to extend or contract according to the information of the trigger signal. By applying the control method provided by the invention, the sun shield comprises the main plate and the expansion plate which can stretch relative to the main plate, and the total length of the sun shield can be controlled by controlling the stretching motion of the expansion plate, so that a driver can adjust the total length of the sun shield according to the height of the driver, adjust the longitudinal sun-shielding area and improve the applicability of the sun shield.

Description

Sun shield control method and sun shield control device

Technical Field

The invention relates to the technical field of vehicle engineering, in particular to a sun shield control method and a sun shield control device.

Background

At present, in the automobile in the market, the sunshading board size is fixed unchangeable, can not satisfy all height drivers' shading demand, and the suitability is relatively poor.

Therefore, how to improve the applicability of the sun visor is a technical problem that needs to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, the present invention provides a control method for a sun visor, which can improve the applicability of the sun visor. Another object of the present invention is to provide a sun visor control device using the above sun visor control method, which can improve the applicability of the sun visor.

In order to achieve the purpose, the invention provides the following technical scheme:

a sun visor control method is applied to a vehicle, the vehicle comprises a vehicle body, a driving device and a sun visor, the sun visor comprises a main plate and an expansion plate connected to the main plate in a sliding mode, the main plate is connected in the vehicle body in a rotating mode, and the driving device is connected between the main plate and the expansion plate;

the method comprises the following steps:

receiving an external signal in real time;

and when the external signal is a trigger signal, controlling the driving device to drive the expansion board to extend or contract according to the information of the trigger signal.

Preferably, the controlling the driving device to drive the expansion board to perform the extending motion or the retracting motion according to the information of the trigger signal includes:

determining the movement direction of the expansion board according to the information of the trigger signal, wherein the movement direction comprises an extension direction corresponding to the extension movement and a contraction direction corresponding to the contraction movement;

when the movement direction of the expansion board is determined to be the extension direction, judging whether the expansion board is located at the limit extension position, if so, limiting the direction in which the expansion board can continue to move to be the contraction direction, otherwise, controlling the driving device to drive the expansion board to extend along the extension direction for a set length;

and when the movement direction of the expansion board is determined to be the contraction direction, judging whether the expansion board is in the limit contraction position, if so, limiting the direction in which the expansion board can continue to move to be the extension direction, and otherwise, controlling the driving device to drive the expansion board to contract along the contraction direction for the set length.

Preferably, the driving device includes a rotary driving motor and a transmission assembly connected between an output shaft of the driving motor and the expansion board, the transmission assembly is configured to convert a rotary motion of the output shaft of the driving motor into a linear motion of the expansion board, the driving motor is connected to a current detection circuit, and the current detection circuit is configured to generate a current signal when the output shaft of the driving motor rotates;

the method further comprises the following steps:

and receiving a current signal of the current detection circuit, wherein when the length of the expansion board extending out of the main board is an integral multiple of the set length, the received current signal is the trigger signal.

Preferably, a rotating shaft is rotatably connected in the vehicle body, the main board is rotatably connected to the rotating shaft, a three-axis acceleration sensor is arranged on the rotating shaft, and the three-axis acceleration sensor is used for detecting a rotating angle of the rotating shaft relative to the vehicle body;

the method further comprises the following steps:

receiving the acceleration detected by the three-axis acceleration sensor and judging the sun-shading direction of the sun-shading board, wherein the sun-shading direction comprises front sun-shading and side sun-shading;

storing the extension length of the expansion plate corresponding to each sunshade direction at the latest time as a corresponding memory length;

when the external signal is a memory signal, the length of the expansion plate is adjusted to the corresponding memory length according to the current sun-shading direction of the sun-shading board.

Preferably, a photosensitive sensor is arranged on the sun visor;

the method further comprises the following steps:

receiving a light detection result of the photosensitive sensor;

when the sun shield is in the extreme contraction position and the light detection result meets the set sun-shading requirement, adjusting the length of the expansion plate to the corresponding memory length according to the current sun-shading direction of the sun shield;

and when the sun shield is extended out relative to the limit retracted position and the light ray detection result does not meet the set sun-shielding requirement, controlling the expansion plate to retract to the limit retracted position.

A sun visor control device is applied to a vehicle, the vehicle comprises a vehicle body, a driving device and a sun visor, the sun visor comprises a main plate and an expansion plate connected to the main plate in a sliding mode, the main plate is connected in the vehicle body in a rotating mode, and the driving device is connected between the main plate and the expansion plate;

the sun visor control device includes:

the first receiving module is used for receiving an external signal in real time;

and the first control module is used for controlling the driving device to drive the expansion board to extend or contract according to the information of the trigger signal when the external signal is the trigger signal.

Preferably, the first control module comprises:

the first judgment unit is used for determining the movement direction of the expansion board according to the information of the trigger signal, wherein the movement direction comprises an extension direction corresponding to the extension movement and a contraction direction corresponding to the contraction movement;

the extension unit is used for judging whether the extension plate is located at an ultimate extension position or not when the movement direction of the extension plate is determined to be the extension direction, if so, the direction in which the extension plate can continue to move is defined as the contraction direction, and otherwise, the driving device is controlled to drive the extension plate to extend along the extension direction for a set length;

and the contraction unit is used for judging whether the expansion board is in the limit contraction position or not when the movement direction of the expansion board is determined to be the contraction direction, if so, limiting the direction in which the expansion board can continue to move to be the extension direction, and otherwise, controlling the driving device to drive the expansion board to contract along the contraction direction for the set length.

the sun visor control device further includes:

and the second receiving module is used for receiving the current signal of the current detection circuit, and when the length of the expansion board extending out of the main board is an integral multiple of the set length, the received current signal is the trigger signal.

the sun visor control device further includes:

the third receiving module is used for receiving the acceleration detected by the three-axis acceleration sensor and judging the sun-shading direction of the sun-shading board, wherein the sun-shading direction comprises front sun-shading and side sun-shading;

the storage module is used for storing the extension length of the expansion plate at the latest time corresponding to each sunshade direction as the corresponding memory length;

and the memory control module is used for adjusting the length of the expansion plate to the corresponding memory length according to the current sun-shading direction of the sun-shading plate when the external signal is a memory signal.

Preferably, a photosensitive sensor is arranged on the sun visor;

the sun visor control device further includes:

the fourth receiving module is used for receiving a light detection result of the photosensitive sensor;

the first light ray control module is used for adjusting the length of the expansion plate to the corresponding memory length according to the current sun-shading direction of the sun-shading plate when the sun-shading plate is at the limit contraction position and the light ray detection result meets the set sun-shading requirement;

and the second light control module is used for controlling the expansion plate to retract to the limit retraction position when the sun visor extends out relative to the limit retraction position and the light detection result does not meet the set condition of needing sun shading.

By applying the control method provided by the invention, the sun shield comprises the main plate and the expansion plate which can stretch relative to the main plate, and the total length of the sun shield can be controlled by controlling the stretching motion of the expansion plate, so that a driver can adjust the total length of the sun shield according to the height of the driver, adjust the longitudinal sun-shielding area and improve the applicability of the sun shield.

The invention provides the sun visor control device applying the sun visor control method, which can improve the applicability of the sun visor.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a block diagram of a vehicle to which the control method of the present invention is applied;

FIG. 2 is a connection diagram of a control device provided in the present invention;

fig. 3 is a flowchart of a control method provided in the present invention.

Reference numerals:

1-vehicle body, 2-bearing assembly, 3-rotating shaft, 4-vertical center line of rotating shaft, 5-horizontal center line of rotating shaft, 6-rotating direction of rotating shaft, 7-rotating direction of sun shield, 8-elastic fastener, 9-sun shield, 10-sun shield and elastic fastener are separated, fixed direction of movement, 11-direction of movement of the expansion board, 12-direction of movement of the expansion board relative to the main board, 13-drive motor, 14-gear, 15-rack, 16-main board, 17-control device, 18-sunlight, 20-central processing unit, 21-photoresistor, 22-current detection circuit, 23-encoder, 24-three-axis acceleration sensor, 25-motor drive circuit, 26-communication bus.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a control method of a sun visor, which can improve the applicability of the sun visor. Another object of the present invention is to provide a sun visor control device using the above sun visor control method, which can improve the applicability of the sun visor.

It will be understood that when an element is referred to as being "secured" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The references to orientations and positional relationships in the description of the present invention are based on the orientations and positional relationships illustrated in the drawings and are intended only to facilitate the description of the present invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The invention provides an in-vehicle light control method which is applied to vehicles, in particular to automobiles. The vehicle includes a vehicle body 1, a drive device, and a sun visor 9. The sun visor 9 comprises a main plate 16 and an extension plate 11 slidably connected to the main plate 16. The main board 16 is connected to the inside of the vehicle body 1, and the drive device is connected between the main board 16 and the expansion board 11.

The expansion board 11 may be embedded in a sliding slot of the main board 16. The expansion board 11 is a plastic panel, which may be opaque or translucent, and is similar to a plastic board of sunglasses lens, such as dark brown, gray, etc., so as to reduce light intensity, replace sunglasses, effectively enlarge sun-shading area, and improve comfort of driver.

The method comprises the following steps:

s1: and receiving an external signal in real time.

S2: when the external signal is a trigger signal, the driving device is controlled to drive the expansion board 11 to perform stretching movement or contraction movement according to the information of the trigger signal.

In this embodiment, the sun visor 9 includes a main plate 16 and an expansion plate 11 that can stretch out and draw back relative to the main plate 16, and the total length of the sun visor 9 can be controlled by controlling the stretching movement of the expansion plate 11, so that the driver can adjust the total length of the sun visor 9 according to his or her own height, adjust the longitudinal sun-shading area, and improve the applicability of the sun visor 9.

Further, the driving device is controlled to drive the expansion board to extend or contract according to the information of the trigger signal, and the method comprises the following steps:

when the movement direction of the expansion board is determined to be the extension direction, judging whether the expansion board is located at the limit extension position, if so, defining the direction in which the expansion board can continue to move as the contraction direction, otherwise, controlling a driving device to drive the expansion board to extend along the extension direction for a set length;

and when the movement direction of the expansion board is determined to be the contraction direction, judging whether the expansion board is in the limit contraction position, if so, defining the direction in which the expansion board can continue to move as the extension direction, and otherwise, controlling the driving device to drive the expansion board to contract along the contraction direction for a set length.

The limit extending position is the position of the extending plate 11 extending the maximum distance relative to the main plate 16, the length of the sun visor 9 at this time is the adjustable maximum total length, and the extending plate cannot continue to extend, and even if a trigger signal with the extending direction being the moving direction is received, the extending plate 11 cannot continue to move along the extending direction.

The limit retraction position is a position where the expansion plate 11 is retracted by a maximum distance relative to the main plate 16, the length of the sun visor 9 at this time is an adjustable minimum total length, and the expansion plate 11 cannot continue to be retracted even if a trigger signal whose movement direction is the retraction direction is received again.

In this embodiment, the moving direction of the expansion board 11 is controlled by combining the moving direction of the expansion board 11 required in the trigger signal and the relationship between the expansion board 11 and the limit position, so that the damage caused by excessive movement of the expansion board 11 can be effectively avoided.

Further, the driving means includes a rotary driving motor 13 and a transmission assembly connected between an output shaft of the driving motor 13 and the expansion plate 11, the transmission assembly being configured to convert a rotational motion of the output shaft of the driving motor 13 into a linear motion of the expansion plate 11.

In the present embodiment, the driving motor 13 is a brushless dc motor. In other embodiments, the driving motor 13 may be a micro stepping motor.

In this embodiment, the transmission assembly is specifically a rack-and-pinion mechanism, as shown in fig. 1, the rack-and-pinion mechanism includes a gear 14 fixed to the output shaft of the driving motor 13 and a rack 15 fixedly connected to the expansion board 11, when the output shaft of the driving motor 13 rotates to drive the gear 14 to rotate, the gear 14 drives the rack 15 to move up and down, and the rack 15 drives the expansion board 11 to move synchronously, so as to realize automatic adjustment of the position of the expansion board 11 relative to the main board 16.

In addition, a current detection circuit 22 is connected to the drive motor 13, and the current detection circuit 22 is configured to generate a current signal when the output shaft of the drive motor 13 rotates. The output shaft of the driving motor 13 rotates to generate a motion of cutting magnetic lines, and the current detection circuit 22 generates a current signal corresponding to the rotation direction of the output shaft, for example, the output shaft of the driving motor 13 rotates clockwise, and the current signal corresponds to a forward current; the output shaft of the driving motor 13 rotates counterclockwise, and the current signal corresponds to the reverse current.

Based on the driving apparatus in the present embodiment, the method further includes:

the current signal of the current detection circuit 22 is received, and when the length of the extension board 11 extending out of the main board 16 is an integral multiple of the set length, the received current signal is a trigger signal.

For the movement of the expansion board 11, since the length of the expansion board 11 which is automatically triggered to perform the extending or retracting movement each time is a preset length, that is, the length of the expansion board 11 which is automatically extended is an integral multiple (including 0) of the set length, if the length of the expansion board 11 which is extended from the main board 16 is not an integral multiple of the set length, it means that the expansion board 11 is in one extending movement period or retracting movement period, and the current signal in the process is not the trigger signal.

When the length of the extension board 11 extending out of the main board 16 is an integral multiple of the set length, it indicates that the extension board 11 just completes the movement of an extension movement period or a contraction movement period, and at this time, if the current detection circuit 22 detects a current signal, it indicates that the extension board 11 receives an external pushing force or pulling force to drive the output shaft of the driving motor 13 to rotate, but not the output shaft of the driving motor 13 to rotate due to the control of the control device, and the current signal at this time is used as a trigger signal, and the control device controls the driving motor 13 to operate according to the current signal, so that the extension board 11 moves a set length along the direction of the received external force.

In this embodiment, the current detection circuit 22 detects the rotation of the output shaft of the driving motor 13 and provides a trigger signal in cooperation with the extension length of the extension board 11, so that the extension or retraction of the extension board 11 can be reliably controlled in close combination with the extension board 11.

As for the control device corresponding to the implementation of the present control method, as shown in fig. 2, a central processing unit 20 and a motor drive circuit 25 are specifically included. The central processing unit 20 is a micro control system composed of a single chip microcomputer or a micro processor and its peripheral circuits. The motor driving circuit 25 is electrically connected to the driving motor 13, and the motor driving circuit 25 is an H-bridge driving circuit, and can control the driving motor 13 to rotate forward or drive the driving motor 13 to rotate backward. The control device is electrically connected to the outside world via a communication bus 26, the communication bus 26 typically being a CAN bus or a Lin bus for communicating with other electronic modules or switches and for exchanging information and the like. In addition, the driving motor 13 is provided with an encoder 23, the encoder 23 is a device based on photoelectric or hall principle, when the driving motor 13 rotates, the encoder 23 can continuously generate 2 output pulse signals with 90-degree phase difference, and the central processing unit 20 can detect and calculate the rotating direction and the number of turns of the motor according to the signals. In other embodiments, the current detection circuit 22 may not be provided, and the encoder 23 may directly detect whether the output shaft of the drive motor 13 rotates.

In the using process, a driver can manually pull down the expansion plate 11 of the sun visor 9 to drive the output shaft of the driving motor 13 to rotate clockwise to generate the motion of cutting magnetic lines, at this time, the current detection circuit 22 detects the forward current and inputs the forward current to the central processing unit 20, when the central processing unit 20 acquires the forward current signal and the signal constitutes a trigger signal, the central processing unit 20 triggers the motor driving circuit 25 to drive the driving motor 13 to rotate clockwise for a certain number of turns (for example, the expansion moves 5cm for each trigger), the encoder 23 is used for detecting the number of turns of the driving motor 13, the central processing unit 20 acquires the output signal of the encoder 23 in real time and records the direction and the number of turns of the current rotation motion of the driving motor 13, when the number of turns of the driving motor 13 reaches a set value, the expansion plate 11 correspondingly extends out of a set length, and the central processing unit 20 controls the driving motor 13 to stop motion through the motor driving circuit 25, and records the absolute position of the current extended visor 9.

If the driver is in a state of continuously pulling down the expansion plate 11 of the sun visor 9 manually at this time, the central processing unit 20 continuously detects the forward current through the current detection circuit 22 and inputs the forward current into the central processing unit 20, and when the forward current constitutes a trigger signal, the trigger motor driving circuit 25 drives the driving motor 13 to continuously rotate clockwise for a fixed number of turns and records the absolute position of the current expansion plate 11; when the extension plate 11 of the sun visor 9 is in the extreme extended position, the central processing unit 20 does not trigger the extension movement of the drive motor 13 any longer even if the driver continues to pull the extension plate 11 outward.

When the expansion plate 11 of the sun visor 9 is in the expansion working state protruding from the main plate 16, the driver can control the expansion plate 11 to contract by triggering the central processing unit 20 by pushing the expansion sun visor 9 upward. Specifically, when the driver pushes the expansion board 11 manually, the driver drives the rotating shaft 3 of the driving motor 13 to rotate counterclockwise to generate a motion of cutting magnetic lines, at this time, the current detection circuit 22 detects a reverse current and inputs the reverse current to the central processing unit 20, and when the central processing unit 20 obtains the reverse current signal and the signal constitutes a trigger signal, the trigger motor driving circuit 25 drives the driving motor 13 to rotate counterclockwise for a certain number of turns (for example, the expansion sun shield 9 is contracted by 5cm by each trigger); meanwhile, the encoder 23 detects the number of rotation turns of the driving motor 13, the central processing unit 20 obtains an output signal of the encoder 23 in real time and records the direction and the number of turns of the rotation movement of the driving motor 13, when the number of rotation turns of the driving motor 13 reaches a set value, the expansion plate 11 is correspondingly contracted by a set length, and the central processing unit 20 controls the driving motor 13 to stop moving through the motor driving circuit 25 and records the current absolute position of the expansion sun shield 9.

If the driver is continuously pushing the expansion plate 11 of the sun visor 9 to contract at this time, the central processing unit 20 again detects the reverse current through the current detection circuit 22 and inputs the reverse current to the central processing unit 20, and when the reverse current constitutes a trigger signal, the trigger motor driving circuit 25 drives the driving motor 13 to continuously rotate counterclockwise for a fixed number of turns and records the absolute position of the lower expansion plate 11. When the expansion plate 11 of the sun visor 9 is in the extreme retracted position, the central processing unit 20 does not trigger the retraction movement of the drive motor 13 any more even if the driver continues to push the expansion plate 11 inwards.

Further, the rotating shaft 3 is connected in the rotating body 1, the main board is connected to the rotating shaft 3 in a rotating mode, a three-axis acceleration sensor is arranged on the rotating shaft 3, and the three-axis acceleration sensor is used for detecting the rotating angle of the rotating shaft 3 relative to the rotating body 1.

As shown in fig. 1 in particular, the vehicle body 1 is a mounting carrier of the sun visor 9, and the rotating shaft 3 is usually mounted on the roof inside the vehicle body 1. The vehicle body 1 is fixed with a bearing assembly 2. One end of the rotating shaft 3 is assembled on the bearing assembly 2, and the other end is rotatably connected with a main plate 16 of the sun shield 9. Wherein, the direction of the rotation of the rotating shaft 3 around the vehicle body 1 is perpendicular to the direction of the rotation of the sun visor 9 around the rotating shaft 3. As shown in fig. 1, in the vehicle body 1, one end of the rotating shaft 3 to which the bearing assembly 2 is fitted rotates clockwise or counterclockwise with the vertical center line 4 of the rotating shaft as a rotation center axis, and the sun visor 9 rotates clockwise or counterclockwise with the horizontal center line 5 of the rotating shaft as a rotation center axis.

The sun-shading direction of the sun-shading board 9 can be adjusted to be front-shading or side-shading by the rotation of the rotating shaft 3 relative to the vehicle body 1. When the front face is used for shading, the sun shield 9 shields the sunlight entering from the front vehicle window; when the side face is shaded, the sun shield plate 9 shields the sunlight entering from the side car window. In addition, the roof is fixed with an elastic buckle 8 for fixing the sun visor 9 when the sun visor 9 rotates to a set front sun-shading position by taking the vertical center line 4 of the rotating shaft as a center. After the elastic buckle 8 is buckled on the sun visor 9, the sun visor 9 can rotate clockwise or counterclockwise by taking the horizontal center line 5 of the rotating shaft as a rotating center shaft, and the front sun-shading angle of the sun visor 9 is adjusted. When the sun visor 9 is adjusted to the position for side sun shading, the horizontal center line 5 of the rotating shaft correspondingly swings to the side, and at this time, the horizontal center line 5 of the rotating shaft can be used as a rotating center shaft to rotate clockwise or anticlockwise, so that the angle for side sun shading of the sun visor 9 can be adjusted.

The control method in this embodiment further includes:

receiving acceleration detected by a three-axis acceleration sensor and judging the sun-shading direction of the sun-shading board, wherein the sun-shading direction comprises front sun-shading and side sun-shading;

storing the extension length of the latest expansion plate corresponding to each sunshade direction as the corresponding memory length;

The control device can identify the current rotation or overturning direction of the rotating shaft 3 through the change direction of the acceleration value detected by the triaxial acceleration sensor 24, so that the current sun shield 9 can be judged to be in a front sun-shading or side sun-shading state.

The memory length comprises a front memory length corresponding to the front sunshade state and a side memory length corresponding to the side sunshade state. In addition, the memory signal can be generated by triggering a memory switch electrically connected to the control device.

The memory operation mode based on the sunshade area of the sunshade plate 9 provided in the present embodiment is as follows:

when a driver turns the sun shield plate 9 to the front sun-shielding position in a front sun-shielding mode, and opens the sun shield plate 9, the storage module of the control device records the extension length of the last expansion plate 11 in the front sun-shielding working mode, and the seat position and the position information of the external rearview mirror at the moment can be recorded into the storage module together;

when a driver turns the sun shield 9 to the side sun-shielding position in a side sun-shielding manner and opens the sun shield 9, the storage module of the control device records the extension length of the last expansion plate 11 in the side sun-shielding working mode, and the seat position and the position information of the external rearview mirror at the moment can be recorded in the storage module together;

when a driver enters the vehicle next time, the memory switch is triggered, and if the sun shield 9 is not rotated to the front sun-shielding position or the side sun-shielding position, the expansion plate 11 is not expanded and is kept in a full-contraction state, namely in the limit contraction position; if the sun shield 9 is in the front sun-shielding position, the control device controls the driving motor 13 to drive the expansion plate 11 to automatically expand to the front memory length; if the sun shield 9 is in the side sun-shielding position, the control device controls the driving motor 13 to drive the expansion plate 11 to automatically expand to the side memory length. In addition, the rotation angle of the sun visor 9 with respect to the horizontal center line 5 of the rotation shaft requires manual adjustment by the driver.

In this embodiment, by using the memory information, the length of the sun visor 9 can be quickly and automatically adjusted to the last adjustment according to the environmental requirements, and the adjustment efficiency of the sun visor 9 is improved.

Furthermore, a photosensitive sensor is arranged on the sun shield. The photosensitive sensor is specifically a photosensitive resistor 21, and the resistance value thereof can be changed according to the intensity of the light intensity, so as to automatically control the expansion operation of the expansion board 11 according to the light intensity in the advancing process.

The control method further comprises the following steps:

receiving a light detection result of the photosensitive sensor;

and when the sun shield is extended relative to the limit retracted position and the light detection result does not meet the set sun-shielding requirement, controlling the expansion plate to retract to the limit retracted position.

When the expansion plate 11 of the sun visor 9 is extended relative to the extreme retracted position and is in the expanded working state, the control device detects the resistance value (i.e., the light detection result) of the photo resistor 21 integrated on the expansion plate 11 in real time, so as to determine the current external environment state of the vehicle: when the light detection result does not meet the set sun-shading requirement, the vehicle is determined to enter the tunnel or to run at the evening or night, and the control device automatically retracts the expansion board 11 to the limit retraction position, namely the original position of the expansion board 11 relative to the main board 16. When the extension plate 11 of the sun visor 9 is in the extreme retracted position, if the light detection result satisfies the set sun-shading requirement, it can be determined that the control device automatically extends the extension plate 11 to move to the latest extended position when the vehicle exits the tunnel or runs in a bright environment such as daytime.

In addition to the above-mentioned control method for the sun visor, the present invention further provides a sun visor control device using the above-mentioned control method for the sun visor, and the above-mentioned embodiments can be referred to correspondingly for advantageous effects.

The sun shield control device is applied to a vehicle, the vehicle comprises a vehicle body, a driving device and a sun shield, the sun shield comprises a main plate and an expansion plate connected to the main plate in a sliding mode, the main plate is connected in the vehicle body in a rotating mode, and the driving device is connected between the main plate and the expansion plate;

the sun visor control device includes:

Further, the first control module includes:

the first judging unit is used for determining the movement direction of the expansion board according to the information of the trigger signal, and the movement direction comprises an extension direction corresponding to the extension movement and a contraction direction corresponding to the contraction movement;

the extension unit is used for judging whether the extension plate is located at the limit extension position or not when the movement direction of the extension plate is determined to be the extension direction, if so, the direction in which the extension plate can continue to move is defined to be the contraction direction, and otherwise, the driving device is controlled to drive the extension plate to extend along the extension direction for a set length;

and the contraction unit is used for judging whether the expansion board is in the limit contraction position or not when the movement direction of the expansion board is determined to be the contraction direction, if so, the direction in which the expansion board can continue to move is defined to be the extension direction, and otherwise, the driving device is controlled to drive the expansion board to contract along the contraction direction for a set length.

Furthermore, the driving device comprises a rotary driving motor and a transmission assembly connected between an output shaft of the driving motor and the expansion board, wherein the transmission assembly is used for converting the rotary motion of the output shaft of the driving motor into the linear motion of the expansion board, the driving motor is connected with a current detection circuit, and the current detection circuit is used for generating a current signal when the output shaft of the driving motor rotates;

the sun visor control device further includes:

and the second receiving module is used for receiving the current signal of the current detection circuit, and when the length of the expansion board extending out of the main board is an integral multiple of the set length, the received current signal is a trigger signal.

Furthermore, a rotating shaft is rotatably connected in the vehicle body, the main board is rotatably connected to the rotating shaft, and a three-axis acceleration sensor is arranged on the rotating shaft and used for detecting the rotating angle of the rotating shaft relative to the vehicle body;

the sun visor control device further includes:

the storage module is used for storing the extension length of the latest expansion plate corresponding to each sunshade direction as the corresponding memory length;

Furthermore, a photosensitive sensor is arranged on the sun shield;

the sun visor control device further includes:

and the second light control module is used for controlling the expansion plate to retract to the limit retraction position when the sun visor extends out relative to the limit retraction position and the light detection result does not meet the set sun-shading requirement.

The sunshading board controlling means that this embodiment provided is applied to in the vehicle, and the sunshading board can vertically be stretched by manual or automatic stretching, can enlarge the sunshade area effectively, and this sunshading board controlling means has memory function, and user information is jointly remembered with governing systems such as seat regulation and outside rear-view mirror are adjusted, improves user's experience of using the car and travelling comfort effectively.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The sun visor control method and device provided by the invention are described in detail above.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A control method of a sun visor is characterized by being applied to a vehicle, wherein the vehicle comprises a vehicle body, a driving device and the sun visor, the sun visor comprises a main board and an expansion board connected to the main board in a sliding manner, the main board is connected in the vehicle body in a rotating manner, the driving device is connected between the main board and the expansion board, a rotating shaft is connected in the vehicle body in a rotating manner, the main board is connected in the rotating manner, a three-axis acceleration sensor is arranged on the rotating shaft, and the three-axis acceleration sensor is used for detecting the rotating angle of the rotating shaft relative to the vehicle body;

the method comprises the following steps: receiving an external signal in real time; when the external signal is a trigger signal, controlling the driving device to drive the expansion board to extend or contract according to the information of the trigger signal;

the method further comprises the following steps: receiving the acceleration detected by the three-axis acceleration sensor and judging the sun-shading direction of the sun-shading board, wherein the sun-shading direction comprises front sun-shading and side sun-shading; storing the extension length of the expansion plate corresponding to each sunshade direction at the latest time as a corresponding memory length; when the external signal is a memory signal, adjusting the length of the expansion plate to the corresponding memory length according to the current sun-shading direction of the sun-shading plate;

the driving device comprises a rotary driving motor and a transmission assembly connected between an output shaft of the driving motor and the expansion board, the transmission assembly is used for converting the rotary motion of the output shaft of the driving motor into the linear motion of the expansion board, the driving motor is connected with a current detection circuit, and the current detection circuit is used for generating a current signal when the output shaft of the driving motor rotates;

the method further comprises the following steps: receiving a current signal of the current detection circuit, wherein when the length of the expansion board extending out of the main board is an integral multiple of a set length, the received current signal is the trigger signal;

when the driver manually pulls the expansion plate to move in an extending mode, the current signal corresponds to forward current, and when the driver manually pushes the expansion plate to move in a contracting mode, the current signal corresponds to reverse current.

2. The method for controlling a sun visor according to claim 1, wherein the controlling the driving device to drive the extension plate to perform the extending movement or the retracting movement according to the information of the trigger signal comprises:

3. A control method for a sun visor according to claim 1 or 2, wherein a light sensitive sensor is provided on the sun visor;

the method further comprises the following steps:

receiving a light detection result of the photosensitive sensor;

4. A sun visor control device is characterized by being applied to a vehicle, wherein the vehicle comprises a vehicle body, a driving device and a sun visor, the sun visor comprises a main board and an expansion board connected to the main board in a sliding manner, the main board is connected in the vehicle body in a rotating manner, the driving device is connected between the main board and the expansion board, a rotating shaft is connected in the vehicle body in a rotating manner, the main board is connected in the rotating shaft in a rotating manner, a three-axis acceleration sensor is arranged on the rotating shaft, and the three-axis acceleration sensor is used for detecting the rotating angle of the rotating shaft relative to the vehicle body;

the sun visor control device includes: the first receiving module is used for receiving an external signal in real time; the first control module is used for controlling the driving device to drive the expansion board to extend or contract according to the information of the trigger signal when the external signal is the trigger signal; the third receiving module is used for receiving the acceleration detected by the three-axis acceleration sensor and judging the sun-shading direction of the sun-shading board, wherein the sun-shading direction comprises front sun-shading and side sun-shading; the storage module is used for storing the extension length of the expansion plate at the latest time corresponding to each sunshade direction as the corresponding memory length; the memory control module is used for adjusting the length of the expansion plate to the corresponding memory length according to the current sun-shading direction of the sun-shading plate when the external signal is a memory signal;

the sun visor control device further includes: the second receiving module is used for receiving a current signal of the current detection circuit, and when the length of the expansion board extending out of the main board is an integral multiple of a set length, the received current signal is the trigger signal;

5. The sun visor control of claim 4, wherein the first control module comprises:

6. A control as claimed in claim 4 or 5, characterised in that a light-sensitive sensor is provided on the visor;

the sun visor control device further includes: