Automatic control system and control method thereof

Abstract

The invention discloses an automatic control system and a control method thereof. The automatic control system comprises a current collector for collecting the magnitude of the output current of a driving device at different positions of a curtain lower beam in a travel range in real time; the Hall element is used for collecting the percentage position of the curtain lower beam in the travel range in real time; the memory is used for storing the corresponding relation between the current percentage position of the curtain lower beam and the current magnitude; the driving device is used for acquiring data of the memory and driving the curtain lower beam to operate; and the main control unit is used for acquiring the data of the memory and controlling the driving device to operate at the minimum output current. The control system has the self-learning and self-updating functions, the output current required by the current percentage position of the driving device is continuously reduced through the controller, the driving device can operate with the minimum current, energy consumption is greatly reduced, the service life of the whole curtain is prolonged, the control system can continuously calibrate data in the working process, and the service life of the curtain is prolonged. And maintenance-free and self-circulation in the life cycle are achieved, the corresponding relation between the curtain assembly and the torsional spring does not need to be considered any more, and production standardization is achieved.

Description

Technical Field

[0001] The invention relates to an automatic control system and a control method thereof. Background Art

[0002] At present, the window decoration industry has two ways to achieve manual and automatic operation: using a clutch structure + mechanical limit mode or a torsion spring + fixed torque motor mode. The former has limited usage scenarios and cannot achieve "pull and stop"; although the latter can achieve "pull and stop", the conditions are very harsh. The material and size of the curtain fabric will affect the actual selection of the required torsion spring. The corresponding relationship between the curtain assembly and the torsion spring must be considered. The assembly is more complicated, and the output power of the fixed torque motor remains unchanged, which cannot reduce energy consumption and has a low service life. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic control system and a control method thereof to solve the technical problems mentioned in the above background technology.

[0004] The technical solution to achieve the purpose of the present invention is: an automatic control system, comprising:

[0005] Current collector: collects the output current of the drive device at different positions of the curtain lower beam within the travel range in real time;

[0006] Hall element: real-time acquisition of the percentage position of the curtain lower beam within the travel range;

[0007] Memory: used to store the corresponding relationship between the current percentage position of the curtain lower beam and the current output current of the driving device;

[0008] Driving device: obtains data from the memory and drives the operation of the curtain lower beam;

[0009] Main control unit: obtains data from the memory and controls the drive device to operate at the minimum output current.

[0010] Furthermore, the main control unit reduces the output current required for the current percentage position according to the data in the memory, and updates the data in the memory.

[0011] Furthermore, the current magnitude includes an upstream current magnitude and a downstream current magnitude.

[0012] Furthermore, the reduced output current data is ΔI=avg(I up +I down ) / 2*0.5%.

[0013] Furthermore, the travel range is divided into a number of small travels, and the small travel where the curtain lower beam is located is determined according to the number of signals received by the Hall element to determine the percentage position within the travel range.

[0014] Furthermore, it also includes a booster spring, the direction of the force provided by the booster spring is opposite to the direction of gravity of the curtain bottom beam and the curtain fabric.

[0015] Furthermore, the assist spring is a coil spring.

[0016] A control method for an automatic control system, characterized in that it comprises the following steps:

[0017] (1) Set the travel range: Set the upper and lower limits of the curtain lower beam to determine the travel range of the curtain lower beam;

[0018] (2) Operation and debugging: Manually pull the curtain lower beam to run the full travel range with very little force. During this process, the position information during the travel is recorded by the Hall element, and the current value of the drive device at the corresponding position is collected by the current collector;

[0019] (3) Normal operation: The main control unit reads data from the memory, takes the current required for the operation of the drive device recorded in the memory as a reference, reduces the preset value and outputs it to the drive device. If the position information matched by the Hall element changes, it indicates that the curtain moves. At this time, the current data of this operation replaces the current value recorded in the memory. If the position information matched by the Hall element does not change, it indicates that the curtain cannot move. At this time, the drive device is controlled to continue to operate with the current required for the operation of the drive device recorded in the memory until the position information matched by the Hall element changes, and the circuit judgment of the next position begins.

[0020] Furthermore, in the step (3), the output current of the driving device is reduced. If the driving device works normally, the corresponding relationship between the percentage position of the curtain lower beam and the current current is updated. Otherwise, the update is abandoned and registered in the memory.

[0021] By adopting the above technical solution, the present invention has the following beneficial effects:

[0022] (1) The present invention has the function of self-learning and self-updating. By continuously reducing the output current required for the current percentage position of the driving device through the controller, the driving device can be operated at the minimum current, which greatly reduces energy consumption and increases the service life of the entire curtain. The control system will continuously calibrate data during operation to achieve maintenance-free and self-circulating operation during the life cycle, and there is no need to consider the corresponding relationship between the curtain components and the torsion springs, so that production is standardized.

[0023] (2) The present invention can achieve fault tolerance by taking data from the memory as the original value of the next reduction. In special cases, some percentage tangent point positions are abnormally blocked, resulting in the inability to update the current information. The tolerance will be corrected during the next operation.

[0024] (3) The present invention is provided with a booster spring, which can further reduce the output of the driving device and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein

[0026] Figure 1 The present invention is a flow chart of the control method of the automatic control system. DETAILED DESCRIPTION

[0027] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the embodiments of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is conventionally placed when used, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The present invention is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the scope of protection of the present invention.

[0033] (Example 1)

[0034] An automatic control system of the present invention includes: a current collector: real-time acquisition of the output current of the driving device at different positions of the curtain lower beam within the travel range; a Hall element: real-time acquisition of the percentage position of the curtain lower beam within the travel range; a memory: used to store the corresponding relationship between the current percentage position of the curtain lower beam and the current current; a driving device: acquiring data from the memory and driving the operation of the curtain lower beam; a main control unit: acquiring data from the memory and controlling the driving device to operate with the minimum output current. The main control unit reduces the output current required for the current percentage position according to the data in the memory, and updates the data in the memory. In this embodiment, the driving device adopts a brushless DC motor, and the electronic switch is controlled by a PWM signal, so that precise torque control can be achieved.

[0035] Specifically, use a transmitter or App, for example, to set the upper and lower limits of the curtain beam to determine the travel range of the curtain beam. After setting the limits, run the debugging, manually pull the curtain beam to the full travel range with very little force, the main control unit will record the current percentage position and current size of the curtain beam in real time, forming a two-dimensional array, which is stored in the memory. The current percentage position comes from the Hall element. The current information comes from the motor controller of the drive device.

[0036] When it is not the first manual start, the main control unit will read the corresponding relationship between the percentage position and the current size from the signal memory, and try to reduce the current value of the current percentage position to test whether there is any resistance at present. When the operating current is reduced and the motor can operate normally, the corresponding relationship between the current percentage position and the current size will be updated. Otherwise, the update will be abandoned and registered in the memory.

[0037] The travel range is divided into several small travels, and the small travel is based on 25 Hall signals. 25 Hall signals are about 0.1% of the total travel range. The current reduction range is 0.5% of the average current during the up and down operation. The formula is ΔI = avg (I up +I down ) / 2*0.5%.

[0038] The motor continuously moves back and forth and corrects the data to achieve a dynamic torque of the motor, realizing "pull and stop". By reading data from the memory as the original value of the next reduction, it can achieve a fault-tolerant effect. In special cases, some percentage cut-off points are abnormally blocked, resulting in the inability to update the current torque information, which will be corrected in the next operation.

[0039] Initial run example 1:

[0040]

[0041] Initial run example 2:

[0042]

[0043] Taking the example data in the figure, according to the formula, the current reduction is half of the average current up + the average current down, and then taking 0.5%, which is about 6mA. The following reciprocating effect example is obtained:

[0044] Non-first run example 1:

[0045]

[0046] Non-first run example 2:

[0047]

[0048] Taking the example data in the figure, according to the formula, the current reduction is half of the average current up + the average current down, and then taking 0.5%, which is about 6mA. The following reciprocating effect example is obtained:

[0049] Non-first run example 3:

[0050]

[0051] Non-first run example 4:

[0052]

[0053]

[0054] The present invention has the functions of self-learning and self-updating. By continuously reducing the output current required for the current percentage position of the driving device through the controller, the driving device can be operated with the minimum current, which greatly reduces energy consumption and increases the service life of the entire curtain. The control system will continuously calibrate data during operation to achieve maintenance-free and self-circulating operation during the life cycle, and there is no need to consider the corresponding relationship between the curtain components and the torsion springs, thereby standardizing production.

[0055] (Example 2)

[0056] The difference between this embodiment and embodiment 1 is that the automatic control system further includes a booster spring, the force direction provided by the booster spring is opposite to the direction of gravity of the curtain lower beam and the curtain fabric. In this embodiment, the booster spring is a coil spring, which can further reduce the output of the drive device and extend the service life.

[0057] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic control system, characterized in that: include: Current collector: collects the output current of the drive device at different positions of the curtain lower beam within the travel range in real time; Hall element: real-time acquisition of the percentage position of the curtain lower beam within the travel range; Memory: used to store the corresponding relationship between the current percentage position of the curtain lower beam and the current output current of the driving device; Driving device: obtains data from the memory and drives the operation of the curtain lower beam; Main control unit: obtains data from the memory and controls the drive device to operate at the minimum output current.

2. An automatic control system according to claim 1, characterized in that: The main control unit reduces the output current required for the current percentage position according to the data in the memory, and updates the data in the memory.

3. An automatic control system according to claim 2, characterized in that: The current magnitude includes an upstream current magnitude and a downstream current magnitude.

4. An automatic control system according to claim 3, characterized in that: The reduced output current is ΔI = avg(I up +I down ) / 2*0.5%.

5. An automatic control system according to claim 1, characterized in that: The travel range is divided into a number of small travels, and the small travel where the curtain lower beam is located is determined according to the number of signals received by the Hall element, so as to determine the percentage position within the travel range.

6. An automatic control system according to claim 1, characterized in that: It also includes a booster spring, wherein the force provided by the booster spring is in the opposite direction to the direction of gravity of the curtain bottom beam and the curtain fabric.

7. An automatic control system according to claim 6, characterized in that: The booster spring is a coil spring.

8. A control method for an automated control system, characterized in that: The following steps are involved: (1) Set the travel range: Set the upper and lower limits of the curtain lower beam to determine the travel range of the curtain lower beam; (2) Operation and debugging: Manually pull the curtain lower beam to run the full travel range with very little force. During this process, the position information during the travel is recorded by the Hall element, and the current value of the drive device at the corresponding position is collected by the current collector; (3) Normal operation: The main control unit reads data from the memory, takes the current required for the operation of the drive device recorded in the memory as a reference, reduces the preset value and outputs it to the drive device. If the position information matched by the Hall element changes, it indicates that the curtain moves. At this time, the current data of this operation replaces the current value recorded in the memory. If the position information matched by the Hall element does not change, it indicates that the curtain cannot move. At this time, the drive device is controlled to continue to operate with the current required for the operation of the drive device recorded in the memory until the position information matched by the Hall element changes, and the circuit judgment of the next position begins.

9. The control method of an automatic control system according to claim 8, characterized in that: In the step (3), the output current of the driving device is reduced. If the driving device works normally, the corresponding relationship between the percentage position of the curtain lower beam and the current current is updated. Otherwise, the update is abandoned and registered in the memory.

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