WO2021104504A1 - Blade control system and method - Google Patents

Abstract

A blade control system (100) and method. The control system (100) comprises an electric motor (110), an electric motor control module (120), a real-time clock (130) and a calculation module (140), wherein the calculation module (140) calculates an incident angle according to time data, determines an angle to be rotated and transmits the angle to be rotated to the electric motor control module (120) so as to control the electric motor (110) to drive blades to rotate by the angle. The control method comprises calculating the incident angle according to blade position and orientation and the time data, determining the angle to be rotated, and controlling the blades to rotate by the angle. Real-time control enables angle control of the blades to be more accurate.

Description

Blade control system and method

This application claims the priority of the Chinese patent application filed with the Chinese Patent Office on November 29, 2019, the application number is 201911206210.5, and the invention title is "Blade Control System and Method", the entire content of which is incorporated into this application by reference.

Technical field

The present invention relates to the field of control systems, and in particular to a blade control system and method, in particular to blades of shutters.

Background technique

Nowadays, doors, blinds, rod blinds, etc. can all be controlled by the control system. For example, for blinds, the sun-shielding effect can be adjusted by adjusting the inclination angle of the blades, so as to block direct sunlight while ensuring the best possible lighting conditions.

Currently, the inclination angle of the curtain blades can be manually adjusted, or the inclination angle of the blades can be sensed by components such as sensors, so as to control the inclination angle of the blades. However, when manually adjusting the inclination angle of the blade, the user adjusts the angle of the blade according to the user's perception of the sun, which is not accurate. Venetian blinds are a product with adjustable shading coefficient, but many manual blinds do not exert real or sufficient energy-saving effects. One of the factors is that users cannot always pay attention to the dynamic position changes of the outdoor sun and respond. , And adjust the blade angle accordingly.

At present, there is also the use of sensors instead of manual input to automatically/motorize the inclination angle of the blades. For example, the pitch angle of the blade can be adjusted based on data or input from a sensor. However, current blade angle control is performed by sensing the inclination angle of the blade by a sensor, and the parameters considered are not enough, so the accuracy is also not high.

Summary of the invention

In view of this, the embodiments of the present invention hope to provide a blade control system and method to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

According to an embodiment of the present invention, a blade control system is provided, including:

A motor configured to drive the blade to rotate around an axis;

A motor control module, coupled to the motor, configured to drive the motor, and control the operating speed and direction of the motor;

Real-time clock, configured to provide time data; and

The calculation module, coupled to the real-time clock and the motor control module, is configured to:

Calculate the angle of incidence of the sun according to the time data provided by the real-time clock,

Determine the angle to be rotated according to the incident angle of the sun, and

Transmitting the to-be-rotated angle to the motor control module,

Wherein, the motor control module controls to make the blade rotate by the to-be-rotated angle.

According to another aspect, the present invention also provides a blade control method, including:

Calculating the sun incidence angle according to the geographic location of the blade, the installation orientation of the blade, and time data; and

The angle to be rotated is determined according to the incident angle of the sun, and the blade is controlled to rotate the angle to be rotated.

Due to the above technical solutions, the embodiment of the present invention has the following advantages: time data is obtained through a real-time clock, and the sun incident angle is calculated accordingly, and then the inclination angle of the blade is adjusted, so that the angle control of the blade is more accurate. When used in the field of blinds, the blinds can be adjusted automatically without manual control by the user, which not only improves the comfort and satisfaction of indoor users, but also improves the work efficiency of indoor users.

The above summary is only for the purpose of description and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, by referring to the accompanying drawings and the following detailed description, further aspects, embodiments, and features of the present invention will be easily understood.

Description of the drawings

In the drawings, unless otherwise specified, the same reference numerals refer to the same or similar parts or elements throughout the multiple drawings. The drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed according to the present invention, and should not be regarded as limiting the scope of the present invention.

Fig. 1 is a schematic structural diagram of a blade control system according to an embodiment of the present invention;

Figure 2 is a schematic diagram of the operation of a blade control system according to an embodiment of the present invention;

Fig. 3 is a schematic flowchart of a blade control method according to an embodiment of the present invention;

4 is a schematic flowchart of a blade control method according to another embodiment of the present invention;

Fig. 5 is a voltage-mode diagram according to a specific example of the present invention;

Fig. 6 is a schematic diagram of an operation mode in a system according to a specific example of the present invention; and

Fig. 7 is a schematic diagram of a window covering member including blades according to a specific example of the present invention.

Detailed ways

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art can realize, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "Radial", "Circumferential" and other directions or positional relations are based on the positions or positional relations shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply the pointed device or The element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more than two, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. , Or integrated; it can be a mechanical connection, it can be an electrical connection, it can also be communication; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction relationship between two components . For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise clearly defined and restricted, the terms "rotation" and the like should be understood in a broad sense. For example, "rotate around an axis" can be "moved around an axis/pivoted". Those skilled in the art can understand the meaning of the above terms in this application according to the specific situation.

In the present invention, unless expressly stipulated and defined otherwise, the "above" or "below" of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features Not in direct contact but through other features between them. Moreover, the "above", "square", and "above" of the first feature on the second feature include the first feature directly above and diagonally above the second feature, or it simply means that the first feature is higher in level than the second feature. The “below”, “below” and “below” of the first feature of the second feature include the first feature directly above and diagonally above the second feature, or it simply means that the level of the first feature is smaller than the second feature.

The following disclosure provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are for illustrative purposes only, and are not intended to limit the invention. In addition, the present invention may repeat reference numerals and/or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and/or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and/or the use of other materials.

It should be noted that in the present invention, if the embodiment is applied to a louver including a plurality of blades arranged in parallel, at least a plurality of blades will be adjusted at the same time. Therefore, even if the embodiment of the present invention is described with respect to one blade, those skilled in the art should understand that the embodiment can be similarly applied to other blades.

Fig. 1 is a schematic diagram of a blade control system provided by an embodiment of the present invention. As shown in Fig. 1, the system 100 includes:

The motor 110 is configured to drive the blades to rotate around the axis;

The motor control module 120, coupled to the motor 110, is configured to drive the motor 110 and control the operating speed and direction of the motor 110;

The real-time clock 130 is configured to provide time data, such as real-time time data; and

The calculation module 140, coupled to the real-time clock 130 and the motor control module 120, is configured to calculate the sun's incident angle according to the time data provided by the real-time clock 130, determine the blade's to-be-rotated angle according to the calculated sun's incident angle, and combine the determined The angle to be rotated is provided to the motor control module 120, and the motor control module 120 controls the rotation of the blade according to the angle to be rotated.

In practical applications, the motor 110, the motor control module 120, the real-time clock 130, and the calculation module 140 may be integrated together. For example, it can be integrated on a single circuit board.

In particular, the system may also include a housing (not shown), and the housing may accommodate various components of the system inside. The system can be installed on the exterior wall of the building as a whole.

In the embodiment of the present invention, the motor 110 may be a gear motor. The system 100 may be connected to a transmission system (not shown). The transmission system may include a transmission shaft, a runner, and a ladder belt. The motor 110 may be connected with a transmission shaft, and the transmission shaft drives the runner, and the runner rotates the blades through the ladder belt. It should be understood that the inclination angle of the blade can also be adjusted by a system known in the art. In a specific example of the present invention, the installation example of the blades related to the known system will be described below with reference to FIG. 7.

It should be noted that the angles mentioned in the embodiments of the present invention are defined as follows: the sun incident angle refers to the azimuth and altitude angle of the sun relative to the horizontal plane; the angle related to the blade is the angle of the blade relative to the installation surface of the blade . For example, the angle related to the blade may be the inclination angle of the blade, or the current angle of the blade, or the like. In another example, the installation plane may generally be a vertical plane relative to the horizontal plane, in particular, may be a generally vertical glass plane.

In the embodiment of the present invention, the motor control module 120 may include a booster and a driver (not shown). The booster may be used to control the running speed of the motor 110, and the driver may be used to control the running direction of the motor 110.

In a specific embodiment of the present invention, the system 100 may further include a gravity sensor 150. The gravity sensor 150 may be integrated in the system 100, coupled to the calculation module 140, and configured to sense the current angle of the blade. In the prior art, Hall sensors are often used to sense the current angle of the blade. Compared with the prior art, the sensing result of the gravity sensor is more accurate. The “current angle” herein refers to the inclination angle of the blade sensed by the gravity sensor 150 in real time.

In the embodiment of the present invention, the system 100 may further include an energy management module 160 configured to monitor the voltage in the system 100 and control the working status of each component in the system 100 according to the voltage in the system 100, so as to help save energy. .

The system 100 may be powered by an external power source. Preferably, the system 100 may also include a solar battery unit 170, coupled to the energy management module 160, configured to collect light energy, and convert the collected light energy into electrical energy for transmission to the energy management module 160. In this way, power can be supplied to various components of the system 100, such as the motor 110, the motor control module 120, and the like.

Preferably, the system 100 may further include an energy storage module 180 coupled to the energy management module 160, configured to store the electric energy converted by the solar cell unit 170, and may supply power to the real-time clock 130.

According to an embodiment of the present invention, the motor 110, the motor control module 120, the real-time clock 130, the calculation module 140, the gravity sensor 150, the energy management module 160, and the energy storage module 180 may be integrated together, for example, integrated in a circuit On the board. The solar cell unit 170 may be arranged inside the system 100 or outside the system 100. In the foregoing embodiment, the solar cell unit 170 may be independent of the circuit board integrated with the components of the system 10.

In a specific example, the energy storage module 180 may be a super capacitor. Supercapacitors can be used as energy storage devices such as batteries, but they are more environmentally friendly. Supercapacitors can also be called electrochemical capacitors, electric double-layer capacitors, gold capacitors, and farad capacitors. They are electrochemical components developed in the 1970s and 1980s that use polarized electrolytes to store energy. Different from traditional chemical power supplies, supercapacitors are a kind of power supply with special performance between traditional capacitors and batteries. They mainly rely on electric double layers and redox capacitors to store electrical energy. However, no chemical reaction occurs during the energy storage process. This energy storage process is reversible, and it is precisely because the supercapacitor can be repeatedly charged and discharged hundreds of thousands of times.

In the system 100 provided by the embodiment of the present invention, the super capacitor is the only energy storage device, and other components, such as the real-time clock 130 and the calculation module 140, are all energy-consuming components. The system 100 uses the energy management module 160 to perform power management on each power consuming component in the system. According to the output voltage of the super capacitor, different power-consuming components are turned on and off respectively. Preferably, the power supply to the motor control module 120 can be controlled on and off according to the output voltage, which helps to save power. In particular, when the output voltage is lower than the third voltage threshold, power consumption components other than the real-time clock 130 are powered off. Generally, the third voltage threshold may be 1.6 to 5.5Vdc. In a specific example, when the third voltage threshold is 3.4Vdc, the minimum operating voltage of the real-time clock 130 is 1.8Vdc. In this example, the real-time clock 130 consumes electric energy every day, and the super capacitor also has self-leakage phenomenon every day, and the sum of the two is less than 0.12V/day. The supercapacitor can be fully charged by lighting for three days. In no day conditions such as cloudy, the supercapacitor cannot be charged, and it is in a state of power loss at this time. However, the system 100 can maintain operation for more than 14 days. It should be understood that with the development of ultracapacitors, stronger charging/storing capacity can be achieved, and the operation of the system 100 can be maintained for a longer period of time.

In other words, in the embodiment of the present invention, the electrical energy is supplied to the components of the system 100 through the ultracapacitor, and the output voltage range of the ultracapacitor is controlled. Specifically, by monitoring the output voltage level of the supercapacitor, the supercapacitor can be prevented from being at an excessively high or low voltage level, and the service life of the supercapacitor can be maximized. This will be described in detail below.

Preferably, the energy management module 160 may be further configured to monitor the output voltage of the energy storage module 180 and control the charging of the energy storage module 180 according to the output voltage.

In another embodiment of the present invention, the energy management module 160 may stop supplying power to the motor control module 120 and stop charging the energy storage module 180 when it monitors that the output voltage of the energy storage module 180 exceeds the first voltage threshold. Therefore, overcharging of the energy storage module 180 can be avoided, so as not to reduce and damage the performance of the energy storage module 180. In the case that the energy storage module 180 is a super capacitor, according to a specific embodiment of the present invention, the first voltage threshold is related to the circuit design of the system 100, and particularly related to the specific setting and model of the energy management module 160. Those skilled in the art can select a suitable energy management module 160 according to needs, and the voltage threshold mentioned in the present invention is not limited to those mentioned in this article, and can also be set according to needs. The energy management module 160 may be an electronic chip, for example, a chip with a model number of BQ25504. In this case, the first voltage threshold can be set to 3.85Vdc, which is the upper limit for charging the supercapacitor. When it is detected that the output voltage of the super capacitor exceeds 3.85 Vdc, the energy management module 160 stops charging the super capacitor.

In particular, the energy management module 160 can also be used to control the working state of the calculation module 140 of the system 100. Specifically, the energy management module 160 may activate the calculation module 140 when it is monitored that the output voltage of the energy storage module 180 exceeds the second voltage threshold, and disable the calculation when it is monitored that the output voltage of the energy storage module 180 is lower than the third voltage threshold. Module 140. The second voltage threshold should be higher than the third voltage threshold. By activating/disabling the calculation module 140 according to the output voltage of the energy storage module 180 instead of the voltage in the system, the system 100 can keep working without an external power source. In addition, the energy storage module 180 in the present invention may be an ultracapacitor, and the performance of the ultracapacitor changes little over time. Therefore, the computing module 140 and the system 100 can operate stably.

The second voltage threshold and the third voltage threshold can be set with reference to the above method. Still taking the BQ25504 chip as an example, the second voltage threshold can be set to 3.78Vdc, and the third voltage threshold can be set to 3.37Vdc. In other words, when the output voltage of the energy storage module 180 is lower than a certain level, the calculation module 140 can be disabled to reduce the power consumption of the system 100 to maintain the basic operation of the system 100.

According to the physical characteristics of the real-time clock 130, it has a minimum operating voltage, which is set as the fourth voltage threshold. When the voltage externally provided to the real-time clock 130 is less than the fourth voltage threshold, the real-time clock 130 fails, that is, stops working. When the externally provided voltage rises again and reaches or exceeds the fourth voltage threshold, the real-time clock 130 restarts Work, and automatically set to the default initialization time, that is, the current time instead of the real-time time.

When the real-time clock 130 restarts to work, the time data it provides is the default initialization time, not the current time, so the system 100 will not be able to correctly calculate the sun angle. At this time, the real-time clock 130 needs to be initialized so that it can retrieve the current time and record it. The user can manually make the real-time clock 130 retrieve the current time. Alternatively, the real-time clock 130 can be programmed in advance, so that the real-time clock 130 can automatically obtain the current time after initialization, or the real-time clock 130 can communicate with the system 100 via a connection with a system clock (not shown). The system clock is synchronized to automatically obtain the current time and current date. If the energy storage module 180 is a super capacitor, the real-time clock 130 can still work under extreme conditions of more than 14 days without a day. When the super capacitor can be recharged, the current time data can be obtained immediately to calculate the sun angle.

In particular, the motor 110 may have a programming interface (not shown), which can be used to initialize the real-time clock 130 and provide data related to the latitude and longitude of the blade installation location and window orientation for the calculation module 140 to calculate the sun angle.

Preferably, the system 100 in the embodiment of the present invention may further include two switching circuits (not shown), such as a first switching circuit and a second switching circuit. The first switching circuit is coupled to both the energy management module 160 and the calculation module 140. Thus, the energy management module 160 can control the working state of the calculation module 140 through the first switching circuit.

The second switching circuit is coupled to the motor control module 120 and the calculation module 140. Thus, the motor 110 and the calculation module 140 are controlled respectively.

Hereinafter, the operation of the system 100 will be described in detail with reference to FIGS. 1 to 5.

As shown in FIG. 1, the calculation module 140 may be coupled to the motor control module 120, the real-time clock 130, and the energy management module 160. It can also be coupled to a gravity sensor 150.

The calculation module 140 can operate in two modes, namely, the wake-up mode and the sleep mode. In the wake-up mode, the calculation module 140 performs the calculation of the sun's incident angle; in the sleep mode, the calculation module 140 is disabled.

Referring to FIG. 2, the operation mode in the system 100 is shown, and the operation mode of the calculation module 140 is also included.

The operation mode of the system 100 will be described in detail below with reference to changes in voltage in the system 100.

Offline mode of system 100:

Under sufficient light conditions, when the system 100 is activated, the solar cell 170 and the energy storage module 180 will be charged, and the output voltage of the energy storage module 180 will increase with the charging. When the output voltage exceeds the fourth voltage threshold, the real-time clock 130 is activated and starts to record the current date and current time from the time register of the real-time clock 130. At this time, the system 100 is in an offline mode. In the offline mode, only the real-time clock 130 in the system 100 is started, that is, working, and other components in the system 100 are disabled.

Online mode of system 200:

As the energy storage module 180 continues to be charged, its output voltage continues to increase. When the output voltage reaches or exceeds the third voltage threshold, the calculation module 140 is awakened and enters its wake-up mode. Those skilled in the art will understand that the computing module may also be awakened in other ways, which is not limited in the present invention.

It should be noted that when the computing module 140 is changed from being disabled to being awakened, the computing module 140 is restarted, and the computing module 140 needs to be initialized at this time. During the initialization of the calculation module 140, two settings are performed on the calculation module 140, namely, the system alarm setting and the project information setting. For example, the initialization of the calculation module 140 may be performed manually by the user, or alternatively, the calculation module 140 may be programmed in advance so that its initialization may be performed automatically. Here, the system alarm setting refers to setting the wake-up time interval of the calculation module 140, that is, how often the calculation module 140 is waked up. The item information setting refers to data such as latitude and longitude and blade orientation that can be obtained by the calculation module 140. According to a specific example, the system 100 may include a memory (not shown), preferably an electrically erasable read-only memory (EEPROM), in which data such as latitude and longitude, blade orientation, etc. are stored. After restarting, the calculation module 140 can read the aforementioned data from the memory for use in the calculation of the sun's incident angle.

In particular, as shown in FIG. 2, when the computing module 140 operates in the wake-up mode, wake-up initialization can be performed. For example, during wake-up initialization, the calculation module 140 may detect whether to receive data from the real-time clock 130 through the connection with the real-time clock 130. In a specific example, the real-time clock 130 can be connected to an alarm clock built into the system 100, and the calculation module 140 can be awakened at a fixed time interval through the alarm clock, so that the calculation module 140 enters the wake-up mode, and the recorded current date and current time Transmitted to the calculation module 140. The recorded current date and current time may be stored in a buffer of the real-time clock 130, a memory (if any, and generally may be RAM), or a register. In this way, the real-time clock 130 tracks the position of the sun by recording the current date and the current time, thereby realizing automatic adjustment of the inclination angle of the blade according to the change of the sun position. Alternatively, the real-time clock 130 may acquire the current date and current time by synchronizing with the system clock of the system 100 via a connection with a system clock (not shown). In another specific example, the calculation module 140 sends a message to the real-time clock 130 every preset time interval to inquire about time data, and calculates the sun's incident angle according to the time data returned by the real-time clock 130.

After the calculation module 140 enters the wake-up mode, it can calculate the incident angle of the sun to adjust the inclination angle of the blade. Hereinafter, a blade control method 200 according to an embodiment of the present invention will be described in detail with reference to FIG. 3.

As shown in FIG. 3, the method 200 may be executed by the calculation module 140, and may include the following steps:

S210: Calculate the sun's incidence angle based on the geographic location of the blade, the installation orientation of the blade, and time data; and

S220: Determine the to-be-rotated angle of the blade according to the sun incident angle, and control the blade to rotate the to-be-rotated angle.

In a specific example, the time data provided by the real-time clock 130 may include the current date and the current time.

In particular, when the system 100 includes the gravity sensor 150, the current angle of the blade can be obtained from the gravity sensor 150. In this case, S220 can be:

Calculating the difference between the sun's incident angle and the current angle; and

When the difference is greater than a preset angle threshold, determine the to-be-rotated angle of the blade, and control the blade to rotate according to the determined to-be-rotated angle.

Where the difference between the sun's incident angle and the current angle of the blade is greater than the preset angle threshold, it can be considered that direct sun rays enter the room, that is, there is direct sun rays. At this time, the motor control module 120 needs to be used to drive the motor 110 to adjust the inclination angle of the blade. In a specific example, a signal can be sent to the motor 110 so that the motor 110 can control the rotation of the blade through the aforementioned transmission system.

Here, the preset angle threshold for the difference between the sun's incident angle and the current angle of the blade can be set to 1 degree, but it is understandable that the threshold can have an error of up and down 20%, that is, it can be 1 ± 20% degrees. .

In another specific example, as shown in FIG. 4, the blade control method 300 provided by the present invention may include:

S310: Send a message to the real-time clock to inquire about time data;

S320: Receive the time data from the real-time clock;

S330: Calculate the sun incidence angle according to the geographic location of the blade, the installation orientation of the blade, and the time data;

S340: Obtain the current angle of the blade;

S350: Calculate the difference between the sun incident angle and the current angle, and when the difference is greater than a preset angle threshold, determine the angle of the blade to be rotated, and control the blade to rotate the Rotation angle.

Here, the preset angle threshold may be 1 degree. Similar to the above, the threshold can have an error of up and down 20%, that is, it can be 1 ± 20% degrees.

In S340, the gravity sensor 150 may be used to obtain the current angle of the blade.

Generally, seven stop positions can be set for the blade, that is, the blade can be maintained at seven preset angles, and the motor control module 120 can control the inclination angle of the blade to be adjusted between 0 and 42 degrees. The seven preset angles can be 0 degrees, 12 degrees, 18 degrees, 24 degrees, 30 degrees, 36 degrees, and 42 degrees, respectively. It is understandable that these seven preset angles can be changed through programming. In particular, the seven preset angles can be modified according to the current date and current time acquired by the real-time clock 130. And according to the current time (more specifically, the current date) (for example, according to different seasons), the seven preset angles can be different. In addition, more than seven or less than seven preset angles can be set according to needs or according to the time data acquired by the real-time clock 130, which is not limited here. It should be noted that any angle value involved in the present invention can be adjusted within the range of up and down 20%. For example, 42 degrees here may be 42°±20%. At the same time, it should be noted that the preset angle here can be determined as needed to block sunlight.

The control of the inclination angle of the blade has been described with reference to the embodiment of the system 100, and will not be repeated here.

When adjusting the inclination angle of the blades, in order to better block direct sunlight, the calculated angle to be rotated can be floated by 6 degrees. Specifically, here, in addition to 6 degrees, other angle values, such as 5 degrees or another angle value, may also be used. The angle value can be determined according to actual needs or according to time data, and the angle value determined thereby should fall within the protection scope of the present invention. Specifically, the calculation module 140 may be further configured to determine the changing trend of the sun's incidence angle according to the time data (especially the current time) obtained by the real-time clock 130. On this basis, the motor control module 120 can control the blade to rotate by ±6 degrees on the basis of the angle to be rotated according to the change trend of the sun incident angle, so as to achieve a better blocking effect. In actual operation, when the changing trend of the sun's incidence angle indicates that the sun's incidence angle increases with time, the motor control module 120 can control the blade to rotate to be rotated by 6 degrees; the changing trend of the sun's incidence angle indicates that the sun's incidence angle decreases with time. When it is small, the motor control module 120 controls the rotation of the blade to reduce the angle of rotation by 6 degrees. Generally, it is possible to set the sun's incident angle to increase with time before twelve noon or two noon, and then to decrease with time. Optionally, the maximum value of the sun's incident angle can be determined according to the current time and date acquired by the real-time clock 130, and the calculated angle to be rotated can be compared with the maximum value. When the angle to be rotated is less than or equal to the maximum value, It is determined that the sun's incident angle increases with time; when the to-be-rotated angle is greater than the maximum, it can be determined that the sun's incident angle decreases with time. The maximum value of the angle of incidence of the sun referred to here can refer to the maximum angle of incidence of the sun in a day, and it is understandable that the maximum value is different from day to day. The maximum sun incident angle can be obtained from any known database, or can be stored in the system in advance for comparison with the angle to be rotated.

Both the method 200 and the method 300 can be executed by the calculation module 140 and the motor control module 120. When the method 200 and the method 300 are executed, the calculation module 140 is in the wake-up mode. In particular, when the calculated difference between the angle of incidence of the sun and the current blade is not greater than the preset angle threshold, the calculation module 140 enters the sleep mode. That is, at this time, it is considered that the sunlight is not directly irradiating the room, and the motor 120 may not be started to adjust the angle of the blades to reduce power loss. Preferably, the preset angle threshold may be 1 degree.

When the output voltage of the energy storage module 180 reaches or exceeds the third voltage threshold, the system 100 enters the online mode. At this time, if the energy storage module 180 continues to be charged and it is monitored that the output voltage of the energy storage module 180 reaches or exceeds the second voltage threshold, it means that the energy storage module 180 is fully charged. In this case, stop the energy storage Charging of module 180. With the operation of the system 100, power will be lost. If the energy management module 160 detects that the output voltage of the energy storage module 180 drops below the second voltage threshold, it can continue to charge the energy storage module 180 to maintain its output voltage at or above the second voltage threshold, thereby ensuring the system 100 Normal operation.

Fig. 5 shows a schematic diagram of a voltage-mode according to a specific example of the present invention. Among them, the voltage value is determined according to the chip BQ25504 as described above. As shown in FIG. 5, 3.85Vdc is the overcharge protection voltage of the supercapacitor, 3.78Vdc is the voltage maintained by the calculation module 140 in the wake-up mode, 3.37Vdc is the system offline voltage, and 1.7Vdc is the restart voltage of the real-time clock 130.

The process from deactivation to normal operation of the system 100 has been described above. The following briefly describes the process from normal operation to deactivation of the system 100 in a long time no day environment or in the absence of an external power supply.

In cloudy weather and lack of sunlight, the solar cell 170 cannot collect and convert light energy. The electric energy stored in the energy storage module 180 will be lost over time and the operation of the system 100, and its output voltage will also decrease.

When the output voltage of the energy storage module 180 is lower than the second voltage threshold, if the sun continues to shine, the energy storage module 180 will start to charge. If there is still no sun exposure, the output voltage of the energy storage module 180 will continue to decrease. If it drops below the third voltage threshold, the energy management module 180 disables the calculation module 140. At this time, the system 100 switches from the online mode to the offline mode. Only the real-time clock 130 works.

If the output voltage of the energy storage module 180 continues to decrease until it drops below the fourth voltage threshold, the real-time clock 130 stops working, and the system 100 stops running. If a super capacitor is used as the energy storage module 180, the operation of the real-time clock 130 can be maintained for a long time (for example, the aforementioned 14 days or more) without a day environment. Once the environment is exposed to the sun, the system 100 can be quickly activated to automatically control the inclination angle of the blades.

The specific operation of the system 100 to automatically adjust the inclination angle of the blade through the calculation module 140 and the specific flow of the control method are described above. In fact, in the embodiment of the present invention, if the current angle of the blade is acquired (for example, by the gravity sensor 150), and the current angle is outside the range of 0 to 42 degrees, the system 100 can switch from the automatic mode to the manual mode. In fact, the user can use the manual mode to adjust the blades at any time. But only when the current angle of the blade is between 0 and 42 degrees, the automatic mode will be activated; when the current angle of the blade is outside of 0 to 42 degrees, the automatic mode will be disabled. It is understandable that the specific value of the angle involved in setting the manual mode or the automatic mode according to the current angle of the blade can be adjusted according to needs or the window structure where the blade is installed. Here, 0 to 42 degrees is only an example, and It cannot limit the scope of the present invention.

In the automatic mode, the calculation module 140 is used to adjust the inclination angle of the blade as described above; in the manual mode, the inclination angle of the blade can be adjusted manually.

In particular, if the system and method provided by the present invention are used for blinds, due to the limitation of the structure of the blinds, the range of manually adjusting the blade angle can be -15 to 60 degrees. As mentioned earlier, the angle range can still be adjusted according to the structure of the window.

The manual mode setting allows the angle of the blades to be adjusted even when the system 100 is offline. It also enables users to adjust the blade angle according to their own experience, which optimizes the user experience.

Hereinafter, referring to FIG. 7, there is shown a schematic diagram of a window covering of a blade according to an embodiment of the present invention, wherein the window covering is an installation example of the blade. It should be understood that the blade may also be included in other structures, and the present invention is not limited herein.

The window covering 1 is shown in FIG. 7. The window covering 1 includes a head rail 18 from which vane blinds 4 are suspended. The blade type shutter includes a plurality of blades 17. The head rail 18 may be constructed of wood, steel, or other rigid materials, and may be solid or have internal channels. It should be understood that in some embodiments, the term "head rail" is not necessarily limited to the traditional head rail structure, but may include any structure, component, or multiple components from which the shield can be suspended or supported, and may include Operating system and/or shielding control components. The head rail 18 may be mounted to the window frame 13 or other building structure through a bracket or other mounting mechanism to cover the window or other opening 8. The vane shutter 4 has an upper edge adjacent to the head rail 18 and a lower edge away from the head rail 2 that can terminate at the bottom rail 19.

The blade 17 may be supported by a hoisting rope 21 connected to the bottom or bottom rail 19 of the shield 4, and the hoisting rope may be retracted toward the head rail 18 at the bottom or bottom rail to raise the shield or extend away from the head rail. Lower the shield. The hoist rope 21 may be operatively connected to the cable 16 or other user controls that may be operated by the user to raise or lower the blade.

The blade 17 may also be supported by a tilt cord 20 that acts to tilt the blade 17 between an open position and a closed position, at which the blades 17 are spaced apart from each other, and in the closed position, The blades 17 are arranged in abutting and overlapping manner to produce a light-shielding plate. The tilt cord 20 may include a ladder cord as shown, which supports the individual blade 17 where operation of the ladder cord causes the blade to tilt between the open position, the closed position, and any intermediate position. The tilt cord 20 may be controlled by a user control 25, such as a lever or cord, which is manipulated by the user to adjust the opening and closing of the blade. Generally, depending on the width of the window covering, the blade may be supported by two or more inclined ropes 20 or two or more lifting ropes 21. Various rope control mechanisms can be set up to control and manage the hoisting ropes and tilting ropes, including rope locks, control drums, brakes, etc. Although specific embodiments of the window covering are disclosed, the window covering may have a variety of configurations. For example, the pull rope can be replaced by a spring motor or a motor to control the raising and lowering of the blade. The tilt rope can be replaced by a belt or other flexible member for tilting the blade, and the control of the blade tilt can be realized by clicking or other control parts. In addition, the blade 17 can have a variety of configurations and implementations and can be composed of any suitable material, including but not limited to wood, metal, plastic, composite materials, and the like.

Each inclined rope 20 may include a ladder rope having a plurality of rungs connected to and supported at each end by vertical support cables 28 and 30. The blade 17 is placed on the top of each rung 26 and is supported by each rung. The drum or other control device can be turned by the user using the control member 25 so that the front vertical support rope 28 can be raised or lowered simultaneously when the rear vertical support rope 30 is lowered or raised, so that the crosspiece 26 is in the fully closed position , Fully open position, and tilt between any intermediate position. In the fully open position, the crosspiece 26 and the blade 17 are arranged substantially perpendicular to the vertical support cords 28 and 30 in order to minimize the obstruction caused by the blade. In either of the fully closed positions, the blades are arranged to be approximately vertical when adjacent blades are in abutting, overlapping relationship. A typical vane shutter has two fully closed positions because the vane can be rotated approximately 180 degrees so that any longitudinal edge of the vane can be in the top position when the shutter is fully closed.

The above description is only for a specific example of the structure in which the blade is included, and it should be understood that this structure is not limited to the above content.

The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited to this. Any person skilled in the art can easily think of various changes or changes within the technical scope disclosed by the present invention. Instead, these should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (28)

1. A blade control system is characterized in that it comprises:

   A motor configured to drive the blade to rotate around an axis;

   A motor control module, coupled to the motor, configured to drive the motor, and control the operating speed and direction of the motor;

   Real-time clock, configured to provide time data; and

   The calculation module, coupled to the real-time clock and the motor control module, is configured to:

   Calculate the angle of incidence of the sun according to the time data provided by the real-time clock,

   Determine the angle to be rotated according to the incident angle of the sun, and

   Transmitting the to-be-rotated angle to the motor control module,

   Wherein, the motor control module controls to make the blade rotate by the to-be-rotated angle.
2. The blade control system according to claim 1, wherein the calculation module is further configured to:

   The angle of incidence of the sun is calculated according to the geographic location of the blade, the installation orientation of the blade, and the time data provided by the real-time clock.
3. The blade control system according to claim 2, wherein the time data includes current date and current time.
4. The blade control system according to claim 1, further comprising:

   A gravity sensor, coupled to the calculation module, and configured to sense the current angle of the blade; and wherein,

   The calculation module is further configured to determine the to-be-rotated angle according to the time data and the current angle.
5. The blade control system according to claim 4, wherein the calculation module is further used for:

   Calculating the difference between the incident angle of the sun and the current angle;

   Determine whether the difference is greater than a preset angle threshold; and

   When it is determined that the difference is greater than the preset threshold, the angle to be rotated is provided to the motor control module.
6. The blade control system according to claim 1, further comprising:

   An energy management module configured to monitor the voltage in the blade control system, and control the motor, the motor control module, the real-time clock, and the calculation module according to the voltage in the blade control system The working status of at least one of them.
7. The blade control system according to claim 6, further comprising:

   The solar battery unit is coupled to the energy management module and is configured to collect light energy, convert the collected light energy into electrical energy, and transfer the converted electrical energy to the energy management module.
8. The blade control system according to claim 7, further comprising:

   The energy storage module is coupled to the energy management module and is configured to store the converted electrical energy and supply power to the real-time clock.
9. The blade control system according to claim 8, wherein the energy storage module is a super capacitor.
10. The blade control system according to claim 8, wherein the energy management module is further configured to monitor the output voltage of the energy storage module, and control the power supply to the motor control module according to the output voltage .
11. The blade control system according to claim 10, wherein the energy management module is further configured to stop supplying power to the motor control module when it is monitored that the output voltage exceeds a first voltage threshold.
12. The blade control system according to claim 10, wherein the energy management module is further configured to activate the calculation module when it is monitored that the output voltage exceeds a second voltage threshold, and when the output voltage is monitored The calculation module is disabled when the voltage is lower than the third voltage threshold,

    Wherein, the second voltage threshold is higher than the third voltage threshold.
13. The blade control system according to claim 1, wherein the real-time clock stops working when its input voltage is lower than a fourth voltage threshold; and

    When the input voltage of the real-time clock is greater than the fourth voltage threshold, the real-time clock is restarted, and the time data is acquired and recorded.
14. The blade control system according to claim 1, wherein the calculation module is further configured to work in a wake-up mode or a sleep mode, wherein,

    In the wake-up mode, the calculation module executes the calculation of the angle of incidence of the sun; and

    In the sleep mode, the computing module is disabled.
15. The blade control system according to claim 14, wherein in the wake-up mode, the calculation module is further configured to:

    Sending a message to the real-time clock to query time data;

    Receiving the time data from the real-time clock;

    Calculating the sun incidence angle according to the geographic location of the blade, the installation orientation of the blade, and the time data;

    Acquiring the current angle of the blade;

    The sun incident angle and the current angle are compared, and when the difference between the sun incident angle and the current angle is greater than a preset angle threshold, the angle to be rotated is transmitted to the motor control module ;as well as

    When the difference between the sun incident angle and the current angle is not greater than the preset angle threshold, switch to the sleep mode.
16. The blade control system according to claim 1, wherein the motor control module controls the inclination angle of the blade to be between 0 and 42 degrees according to the angle to be rotated.
17. The blade control system according to claim 4, wherein when the gravity sensor senses that the current angle of the blade is outside the range of 0 to 42 degrees, the inclination angle of the blade is adjusted in a manual mode.
18. The blade control system according to claim 17, wherein the inclination angle of the blade ranges from -15 to 60 degrees.
19. The blade control system according to claim 1, wherein the calculation module is further configured to determine whether the sun incident angle increases with time according to the time data, and

    The motor control module is further configured to:

    When it is determined that the sun incident angle increases with time, control the blade to rotate the angle to be rotated plus 6 degrees; and

    When it is determined that the sun incidence angle decreases with time, the blade is controlled to rotate and the angle to be rotated is reduced by 6 degrees.
20. The blade control system according to claim 15, wherein the calculation module sends a message to the real-time clock every preset time interval to inquire about the time data.
21. The blade control system according to claim 20, wherein the calculation module calculates the sun incidence angle each time after receiving the time data obtained from the real-time clock.
22. A blade control method, characterized by comprising:

    Calculating the sun incidence angle according to the geographic location of the blade, the installation orientation of the blade, and time data; and

    The angle to be rotated is determined according to the incident angle of the sun, and the blade is controlled to rotate the angle to be rotated.
23. The blade control method according to claim 22, further comprising:

    Obtaining the current angle of the blade; and

    Wherein, the determining the angle to be rotated according to the incident angle of the sun and controlling the blade to rotate the angle to be rotated includes:

    According to the sun incident angle and the current angle, determine the to-be-rotated angle of the blade, and control the blade to rotate the to-be-rotated angle.
24. The blade control method according to claim 23, wherein the determining the angle to be rotated according to the incident angle of the sun, and controlling the blade to rotate the angle to be rotated, comprises:

    Calculate the difference between the angle of incidence of the sun and the current angle; and

    When the difference between the sun incident angle and the current angle is greater than a preset angle threshold, the angle to be rotated is determined, and the blade is controlled to rotate the angle to be rotated.
25. The blade control method according to claim 22, wherein the time data includes current date and current time.
26. The blade control method according to claim 25, further comprising:

    Get the current date and current time at regular intervals; and

    Each time the current date and current time are acquired, the sun incident angle is updated, and the to-be-rotated angle is determined according to the updated sun incident angle.
27. The blade control method according to claim 22, wherein the adjustable range of the inclination angle of the blade is 0 to 42 degrees.
28. The blade control method according to claim 27, wherein the inclination angle of the blade is selected from seven angles in the range of 0 to 42 degrees.

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