Electric window covering, electric window covering system and window covering alignment method

Abstract

A first electric window covering is disclosed. The first electric window covering includes an upper beam, a lower beam, a lower beam drive assembly, a control device and a power supply unit. The lower beam is arranged below the upper beam and can be driven by the lower beam driving assembly to move relative to the upper beam and between a lower beam upper limit position and a lower beam lower limit position. After receiving a specific remote control command, the control device of the first electric window covering will send the a alignment packet to a second electric window covering, receive a second alignment packet of the second electric window covering, and control a lower beam drive assembly to align the lower beam according to the first alignment packet and the second alignment packet, wherein the first alignment packet at least includes information of a current lower beam position when the lower beam of the first electric window covering is stopped or still, and the second alignment packet at least includes information of a current lower beam position when a lower beam of the second electric window covering is stopped or still.

Description

[Technical Field]

[0001] This invention relates to an electric curtain, an electric curtain system and a curtain alignment method, and more particularly to an electric curtain, an electric curtain system and a curtain alignment method that enables automatic alignment between a plurality of bottom rails of a plurality of electric curtains. [Previous Technology]

[0002] With the development of technology, motorized curtains on the market have advanced to the point that when a user wants to achieve the same shading height on multiple windows of the same height, a single wireless control command can be issued via a remote control device, causing all motorized curtains on the same side of the building or in the same group to perform the same action simultaneously, eliminating the hassle of controlling each curtain individually. However, since the communication between the remote control device and the motorized curtains is wireless, when the distance between the device and the curtains is relatively large, or when furniture obstructs the view, the timing of each curtain receiving the wireless control command will vary. This results in the lower beams of multiple motorized curtains on the same side of the building or in the same group remaining at different heights after they stop moving, making them unable to align with each other. This leads to inconsistent shading heights on each window and creates a cluttered visual effect. The visual effect is even worse when the motorized curtains are day and night blinds with a central beam and a lower beam, and the central beams and lower beams of multiple motorized curtains cannot align with each other. In order to adjust the visual effect of the curtains, users must fine-tune the height of each motorized curtain multiple times to make the shading height of each curtain the same, thus losing the original convenience of group control.

[0003] If the multiple lower beams and / or multiple middle beams of multiple motorized curtains on the same side or in the same group of a building are not aligned with each other when they are moving or stationary, it will make the user feel that it is messy and unsightly. In view of this, there is a need to provide a technical solution that enables the multiple lower beams and / or multiple middle beams of multiple motorized curtains in the same group to be automatically aligned. [Summary of the Invention]

[0004] As can be understood from the above description, the purpose of this invention is to provide an innovative electric curtain alignment technology, which mainly allows multiple electric curtains in the same group to send alignment packets to other electric curtains when they are stopped or stationary. Each electric curtain makes a judgment based on its current position of the lower beam and / or middle beam, as well as the position of the lower beam and / or middle beam of the other electric curtains it receives, and decides whether to drive the lower beam and / or middle beam to move, and the position to stop after the lower beam and / or middle beam moves, so as to achieve the purpose of automatic alignment of the lower beam and / or middle beam.

[0005] Based on one objective of the present invention, an embodiment of the present invention provides a first electric curtain, which includes an upper beam, a lower beam, a lower beam drive assembly, a control device, and a power supply unit. The lower beam is disposed below the upper beam and can be driven to move relative to the upper beam and between an upper limit position and a lower limit position of the lower beam. The lower beam drive assembly includes a lower beam motor and a lower beam encoder, wherein the lower beam encoder senses the rotation of the lower beam motor to generate a lower beam coded signal representing the current position of the lower beam. The control device is electrically connected to the lower beam motor and the lower beam encoder, and the control device is used to control the lower beam motor to drive the lower beam to move, and to receive the lower beam coded signal from the lower beam encoder. The power supply unit is electrically connected to the lower beam motor, the control device, and the lower beam encoder. After receiving a specific remote control command, the control device sends a first alignment packet to the second motorized curtain and receives a second alignment packet from the second motorized curtain. Based on the first and second alignment packets, the control device controls the lower beam motor to align the lower beam. The first alignment packet includes at least information on the current position of the lower beam when the lower beam of the first motorized curtain stops or is stationary, and the second alignment packet includes at least information on the current position of the lower beam when the lower beam of the second motorized curtain stops or is stationary.

[0006] Based on one objective of the present invention, embodiments of the present invention provide a curtain alignment method for a first electric curtain and a second electric curtain. This curtain alignment method includes the following steps: after receiving a specific remote control command, the control device of the first electric curtain sends a first alignment packet to the second electric curtain, wherein the first alignment packet includes information on the current position of the lower beam of the first electric curtain when it stops or is stationary; after receiving a specific remote control command, the control device of the second electric curtain sends a second alignment packet to the first electric curtain, wherein the second alignment packet includes information on the current position of the lower beam of the second electric curtain when it stops or is stationary; the control device of the first electric curtain controls the lower beam motor of the first electric curtain according to the first alignment packet and the second alignment packet to align the lower beam of the first electric curtain; and the control device of the second electric curtain controls the lower beam motor of the second electric curtain according to the first alignment packet and the second alignment packet to align the lower beam of the second electric curtain.

[0007] Based on one of the objectives of the present invention, an embodiment of the present invention provides an electric curtain system, which includes the aforementioned first electric curtain and the aforementioned second electric curtain, wherein the second electric curtain is wirelessly connected to the first electric curtain.

[0008] As described above, compared with the prior art, the electric curtain, system and curtain alignment method provided by the present invention can align the lower beam and / or middle beam when multiple electric curtains are stopped or stationary, avoiding the adjustment trouble required to control multiple electric curtains one by one to align the lower beam and / or middle beam and the multiple control signal transmissions caused by the adjustment.

Implementation Method

[0009] In order to enable multiple motorized curtains in the same group of the curtain system to automatically align the lower beam and / or middle beam after stopping, the multiple motorized curtains of the present invention will perform a packet propagation automatic alignment method. By propagating alignment packets including the current position information of the lower beam and / or middle beam of the motorized curtain itself to other motorized curtains, each motorized curtain can decide whether to move the lower beam and / or middle beam based on its own alignment packet and the alignment packets received from multiple other motorized curtains, and determine the direction and distance of movement of the lower beam and / or middle beam, so as to enable the lower beam and / or middle beam of multiple motorized curtains to align with each other. The aforementioned propagation of alignment packets can be via broadcast, multicast, or unicast. In the case of multicast or unicast, it is usually necessary to set the address of each motorized curtain, such as, but not limited to, an Internet Protocol address (IP address). Motorized curtains in the same group must know each other's addresses so that they can successfully transmit alignment packets to other motorized curtains. Furthermore, unicast is limited to situations where the motorized curtain system has only two motorized curtains. Additionally, to increase alignment accuracy, multiple motorized curtains within the same group can perform minimum scale alignment. The following will describe in detail the possible embodiments of the invention with reference to the figures. However, it should be noted that the following implementation details are not intended to limit the scope of the claims made by this invention, but are merely for the convenience of those skilled in the art to understand.

[0010] First, please refer to Figures 1 and 2. Figure 1 is a schematic diagram of the first electric curtain according to an embodiment of the present invention, and Figure 2 is an enlarged schematic diagram of the lower beam motor and control device inside the upper beam of the first electric curtain according to an embodiment of the present invention. The first electric curtain includes an upper beam 10, a lower beam 12, and a curtain body 11, wherein the lower beam 12 is disposed below the upper beam 10, and the curtain body 11 is connected between the upper beam 10 and the lower beam 12. The internal space of the upper beam 10 is equipped with a lower beam motor 101, a control device 106, a lower beam encoder 105, a lower beam winding shaft 102, and a power supply unit 103, wherein the power supply unit 103 is electrically connected to the lower beam motor 101, the control device 106, and the lower beam encoder 105, and the control device 106 is electrically connected to the lower beam motor 101 and the lower beam encoder 105, and sets the upper limit height position of the lower beam to P1 and the lower limit height position of the lower beam to P2 (also refer to Figure 4). The lower beam motor 101, the lower beam winding shaft 102 and the lower beam encoder 105 constitute a lower beam drive assembly, which can drive the lower beam 12 to move relative to the upper beam 10 between the upper limit height position P1 and the lower limit height position P2 of the lower beam.

[0011] The power supply unit 103 is used to supply DC power to the lower beam motor 101, the control device 106, and the lower beam encoder 105. Therefore, the power supply unit 103 can be a rechargeable secondary battery, a replaceable primary battery, or an AC-to-DC adapter circuit connected to mains power, and the present invention is not limited thereto. The lower beam winding shaft 102 is connected to the lower beam motor 101. The internal space of the upper beam 10 of the first electric curtain is further provided with a lower beam drive shaft 104 to connect between the lower beam winding shaft 102 and the lower beam motor 101. In this embodiment, there are two lower beam winding shafts 102, and the two lower beam winding shafts 102 are connected to each other by the lower beam drive shaft 104 so that the two lower beam winding shafts 102 rotate synchronously. The number of lower beam pull ropes 13 corresponds to the number of lower beam winding shafts 102, but this invention is not limited to this number. One end of the lower beam pull rope 13 is connected to the lower beam winding shaft 102, and the other end of the lower beam pull rope 13 passes through the curtain body 11 and is fixed to the lower beam 12. When the lower beam motor 101 rotates, it drives the lower beam winding shaft 102 to rotate through the lower beam drive shaft 104, thereby winding or releasing the lower beam pull rope 13 connected to the lower beam winding shaft 102. When the lower beam pull rope 13 is wound up by the lower beam winding shaft 102 or released by the lower beam winding shaft 102, it can drive the lower beam 12 to move between the upper limit height position P1 and the lower limit height position P2 of the lower beam (see also Figure 4).

[0012] The lower beam encoder 105 is mainly used to sense the rotation of the lower beam motor 101 to generate a lower beam encoding signal. Further, the lower beam encoder 105 includes a lower beam magnetic wheel 1051 and a lower beam magnetic sensor 1052. The lower beam magnetic wheel 1051 is connected to the lower beam motor 101, and when the lower beam motor 101 drives the lower beam drive shaft 104 to rotate, it drives the lower beam magnetic wheel 1051 to rotate as well. The lower beam magnetic sensor 1052 is fixed to the lower beam motor 101 and located near the periphery of the lower beam magnetic wheel 1051, and is electrically connected to the control device 106. The lower beam magnetic sensor 1052 can sense changes in magnetic force through the rotation of the lower beam magnetic wheel 1051, thereby sensing the rotation of the lower beam motor 101 and generating a lower beam encoding signal representing the current position of the lower beam. The lower beam magnetic sensor 1052 is, for example, but not limited to, a Hall sensor. Alternatively, the lower beam encoder 105 can also be implemented in other ways, such as an optical encoder that detects motion in an optical manner.

[0013] Please refer to Figure 3 next. Figure 3 is a functional block diagram of the first electric curtain according to an embodiment of the present invention. The control device 106 of the first electric curtain includes a motor drive module 1062, a microprocessor 1061, an encoded signal detection module 1063, and a memory 1065. The microprocessor 1061 is electrically connected to the motor drive module 1062, the encoded signal detection module 1063, the control command transceiver module 108, and the memory 1065. The motor drive module 1062 is electrically connected to the lower beam motor 101. The microprocessor 1061 transmits drive signals to the motor drive module 1062 so that the motor drive module 1062 controls the rotation or stop of the lower beam motor 101 according to the drive signals. In addition, the control command transceiver module 108 is electrically connected to the power supply unit 103 to provide power to the control command transceiver module 108.

[0014] The encoding signal detection module 1063 is electrically connected to the lower beam encoder 105 to check the integrity of the lower beam encoding signal. The microprocessor 1061 receives the lower beam encoding signal from the encoding signal detection module 1063 to obtain the current position of the lower beam when the first electric curtain stops or remains stationary. The memory 1065 serves as an external cache space for the data of the microprocessor 1061. The first electric curtain may further include a remote operation device 107. The control command transceiver module 108 is communicatively connected to the remote operation device 107. In this embodiment, the remote operation device 107 may be a remote wireless operation device operated by a user to generate wireless remote control commands and transmit them to the control command transceiver module 108, which then transmits the wireless remote control commands to the microprocessor 1061. In other embodiments, the remote operating device 107 can be a central control unit that generates remote control commands based on user settings or input from environmental sensors (such as an ambient light sensor), and transmits them to the control command transceiver module 108 via wired or wireless means. The control command transceiver module 108 then transmits the remote control commands to the microprocessor 1061. In this embodiment, the microprocessor 1061 serves as the core of the control device 106, used to execute control commands such as aligning, moving, and stopping the lower beam 12.

[0015] The curtain body 11 varies depending on the type of the first motorized curtain. In this embodiment, the first motorized curtain is a motorized honeycomb blind, and the curtain body 11 may be a plurality of hollow slats (not shown) arranged between the upper beam 10 and the lower beam 12, with a hexagonal side section. In other embodiments, the first motorized curtain may be a motorized Venetian blind, and the curtain body 11 may be a plurality of Venetian blinds arranged parallel to and parallel to the upper beam 10 and the lower beam 12. In this embodiment, the lower beam drive assembly, the power supply unit 103, and the control device 106 are arranged in the internal space of the upper beam 10. However, in other embodiments, part or all of the lower beam drive assembly, the power supply unit 103, and the control device 106 may be arranged in the internal space of the lower beam 12, or in a location outside the upper beam 10 and the lower beam 12 but close to the curtain body 11.

[0016] The control device 106 is used to control the lower beam motor 101 to drive the lower beam winding shaft 102 to rotate, thereby releasing or winding the lower beam pull rope 13, driving the lower beam 12 to descend or rise, thereby causing the curtain 11 to unfold or close. The control device 106 can obtain the current position of the lower beam according to the lower beam coding signal of the lower beam magnetic sensor 1052, especially when the lower beam 12 stops moving or is stationary after completing its movement. When the control device 106 receives a specific remote control command through the control command transceiver module 108, the control device 106 transmits a first alignment packet to the second motorized curtain in the same group, and receives a second alignment packet from the second motorized curtain. Based on the first and second alignment packets, the control device 106 controls the lower beam motor 101 to align the lower beam 12. The first alignment packet includes information about the current position of the lower beam 12 when it stops or is stationary, and the second alignment packet includes information about the current position of the lower beam when it stops or is stationary. It should be noted that the first and second motorized curtains are motorized curtains with the same structure; therefore, the structure of the second motorized curtain will not be described in detail here.

[0017] The above embodiment uses two motorized curtains with identical structures and vertical heights, belonging to the same group, as an example. However, in other embodiments, the motorized curtain system may have three or more motorized curtains with identical structures and vertical heights, belonging to the same group. In this embodiment, the control device 106 of the first motorized curtain transmits a first alignment packet to the second to Nth motorized curtains in the same group, and receives the second to Nth alignment packets transmitted by the control devices of the second to Nth motorized curtains respectively. The control device 106 of the first motorized curtain controls the lower beam motor 101 to align the lower beam 12 according to the first to Nth alignment packets. The first alignment packet includes information on the current position of the lower beam 12 when the lower beam 12 of the first motorized curtain stops or is stationary. The second to Nth alignment packets respectively include information on the current position of the lower beam when the lower beam of the second to Nth motorized curtains stops or is stationary, where N is an integer greater than or equal to 3.

[0018] Please refer to Figure 4, which is a schematic diagram of the misalignment of the lower beams of the two motorized curtains in an embodiment of the present invention. The curtain system includes at least two first motorized curtains 1A and second motorized curtains 1B belonging to the same group. The first motorized curtains 1A and second motorized curtains 1B are respectively located at windows W1 and W2 with the same height dimension on the vertical axis and can communicate with each other. Each of the first motorized curtains 1A and second motorized curtains 1B has multiple elements as shown in Figures 1 to 3. In this embodiment, the upper beams 10A and 10B of the first motorized curtains 1A and second motorized curtains 1B are set at position Y1 on the vertical axis, that is, the first motorized curtains 1A and second motorized curtains 1B are installed at a fixed position Y1. Since the first motorized curtains 1A and second motorized curtains 1B are set at the same height on windows W1 and W2, the heights of the upper limit position P1 and the lower limit position P2 of the lower beams 12A and 12B providing the movement range of the lower beams will also be the same for the first motorized curtains 1A and second motorized curtains 1B.

[0019] When the control devices of the first electric curtain 1A and the second electric curtain 1B receive a remote control command that moves the lower beam 12A downward, the control devices of the first electric curtain 1A and the second electric curtain 1B can control their respective lower beam motors to move their respective lower beams 12A and 12B downward relative to the upper beams 10A and 10B. Then, when the control devices of the first electric curtain 1A and the second electric curtain 1B receive a specific remote control command, such as a stop command, they control their lower beam motors to stop the movement of the lower beams 12A and 12B. Since the time when the control devices of the first electric curtain 1A and the second electric curtain 1B receive the movement command and / or the stop command may have a time difference due to environmental factors, the lower beams 12A and 12B of the first electric curtain 1A and the second electric curtain 1B do not start moving and / or stop moving at the same time, so that when the lower beams 12A and 12B of the first electric curtain 1A and the second electric curtain 1B stop moving, the lower beams 12A and 12B stop at heights of positions Y3 and Y2, respectively.

[0020] Through the lower beam encoding signal generated by the lower beam encoder of the first electric curtain 1A, representing the current position of the lower beam 12A when the lower beam of the first electric curtain 1A is stopped or stationary, the first electric curtain 1A will know that its lower beam is currently at position Y3. Similarly, through the lower beam encoding signal generated by the lower beam encoder of the second electric curtain 1B, representing the current position of the lower beam 12B when the lower beam of the second electric curtain 1B is stopped or stationary, the control device of the second electric curtain 1B will know that its lower beam is currently at position Y2. However, the first electric curtain 1A currently does not know the current position of the lower beam of the second electric curtain 1B, and the second electric curtain 1B currently does not know the current position of the lower beam of the first electric curtain 1A. However, as can be seen from Figure 4, the lower beams 12A of the first electric curtain 1A and the second electric curtain 1B are not aligned, which does not meet the user's expectations. Therefore, the control devices of the first electric curtain 1A and the second electric curtain 1B will perform an automatic alignment method using propagation packets. The control device of the first electric curtain 1A generates and transmits a first alignment packet to the second electric curtain 1B, while the control device of the second electric curtain 1B generates and transmits a second alignment packet to the first electric curtain 1A. The first alignment packet includes information about the current position of the lower beam 12A when it is stopped or stationary, while the second alignment packet includes information about the current position of the lower beam 12B when it is stopped or stationary. The control devices of the first electric curtain 1A and the second electric curtain 1B can determine the current positions of the lower beams (Y3 and Y2, respectively) based on the first and second alignment packets, and automatically align the lower beams 12A and 12B accordingly. In this example, the control device of the second electric curtain 1B determines that the lower beam alignment position is at position Y2 based on the first alignment packet and the second alignment packet, and controls the lower beam motor of the second electric curtain 1B to keep the lower beam 12B of the second electric curtain 1B at position Y2. The control device of the first electric curtain 1A determines that the lower beam alignment position is at position Y2 based on the first alignment packet and the second alignment packet, and controls the lower beam motor of the first electric curtain 1A to move the lower beam 12A of the first electric curtain 1A upward to position Y2. Alternatively, the control device of the first electric curtain 1A determines that the lower beam alignment position is at position Y3 based on the first alignment packet and the second alignment packet, and controls the lower beam motor of the first electric curtain 1A to keep the lower beam 12A of the first electric curtain 1A at position Y3. The control device of the second electric curtain 1B determines that the lower beam alignment position is at position Y3 based on the first alignment packet and the second alignment packet, and controls the lower beam motor of the second electric curtain 1B to move the lower beam 12B of the second electric curtain 1B downward to position Y3.Preferably, the control devices of the first electric curtain 1A and the second electric curtain 1B further control their lower beam motors to align the lower beams 12A and 12B according to the previous moving directions of the first alignment envelope, the second alignment envelope, and their lower beams 12A and 12B, so that the lower beams 12A and 12B are both in the lower beam alignment position. Therefore, the control device of the first electric curtain 1A determines that the lower beam alignment position is at position Y3, that is, controls the lower beam motor of the first electric curtain 1A to keep the lower beam 12A of the first electric curtain 1A at position Y3. The control device of the second electric curtain 1B determines that the lower beam alignment position is at position Y3, that is, controls the lower beam motor of the second electric curtain 1B to move the lower beam 12B of the second electric curtain 1B down to position Y3, so that the lower beams 12A of the first electric curtain 1A and the lower beams 12B of the second electric curtain 1B both stop at position Y3, achieving the effect of aligning the lower beams 12A and 12B.

[0021] The above example is illustrated by setting the height position P1 of the lower beam upper limit position of the first electric curtain 1A and the second electric curtain 1B at the first upper limit initial position. The distance between the current position of the lower beam and the first upper limit initial position is the moving distance of the lower beam. When the moving distance of the lower beam of the first electric curtain 1A and the second electric curtain 1B is the same, the lower beams 12A and 12B will be located at the same height. Therefore, the height position P2 of the lower limit position of the lower beam of the first electric curtain 1A and the second electric curtain 1B can be the same or different. That is, the height dimensions of windows W1 and W2 on the vertical axis can also be the same or different. In addition, in some cases, the height positions P1 of the upper limit of the lower beam of the first electric curtain 1A and the second electric curtain 1B cannot be aligned, but the height positions P2 of the lower limit of the lower beam of the first electric curtain 1A and the second electric curtain 1B can be aligned. In this case, the height position P2 of the lower limit of the lower beam of the first electric curtain 1A and the second electric curtain 1B is configured at the initial position of the first lower limit, and the distance between the current position of the lower beam and the initial position of the first lower limit is the moving distance of the lower beam. When the moving distance of the lower beam of the first electric curtain 1A and the second electric curtain 1B is the same, the lower beams 12A and 12B will be located at the same height. Therefore, the height of the upper limit of the lower beam of the first electric curtain 1A and the second electric curtain 1B can be the same or different. That is, the height dimensions of windows W1 and W2 on the vertical axis can be the same or different.

[0022] Furthermore, the above example illustrates the alignment of the lower beam 12 after receiving a specific remote control command to stop the operation, but the present invention is not limited thereto. In one embodiment, the control devices for the first electric curtain 1A and the second electric curtain 1B may, for example, receive a specific remote control command to move the lower beams 12A and 12B to a designated position, and after the lower beams 12A and 12B stop at the designated position, the control devices for the first electric curtain 1A and the second electric curtain 1B automatically execute the above-described automatic alignment method using propagation packets. In one embodiment, if the lower beams 12A and 12B of the electric curtains 1A and 1B have been stationary for a period of time, the control devices for the first electric curtain 1A and the second electric curtain 1B may execute the above-described automatic alignment method using propagation packets after receiving a specific remote control command for active alignment.

[0023] In addition, each of the first alignment packet and the second alignment packet may also include information such as curtain type and group code. Only the first electric curtain 1A and the second electric curtain 1B of the same type and the same group will be aligned with the lower beams 12A and 12B. In other words, the control device of the first electric curtain 1A and the control device of the second electric curtain 1B will compare and judge to discard alignment packets of different curtain types and different groups. The discarded alignment packets will not be used as the basis for controlling the alignment of the lower beams 12A and 12B. In addition, the first alignment packet may also include information on the maximum movement distance of the lower beam between the upper limit height position P1 and the lower limit height position P2 of the lower beam of the first electric curtain 1A and the predetermined maximum alignment distance of the lower beam. The maximum movement distance of the lower beam refers to the maximum distance that the lower beam 12A of the first electric curtain 1A can move (i.e., the distance between the upper limit height position P1 and the lower limit height position P2 of the lower beam of the first electric curtain 1A). The maximum alignment distance of the lower beam refers to the maximum alignment distance that the lower beam 12A of the first electric curtain 1A can move when it is aligned. The maximum alignment distance of the lower beam can be a preset distance or a percentage of the maximum movement distance of the lower beam. The second alignment packet may further include information on the maximum movement distance of the lower beam between the upper limit height position P1 and the lower limit height position P2 of the lower beam of the second electric curtain 1B, and a predetermined maximum alignment distance of the lower beam. The maximum movement distance refers to the maximum distance that the lower beam 12B of the second electric curtain 1B can move (i.e., the distance between the upper limit height position P1 and the lower limit height position P2 of the lower beam of the second electric curtain 1B). The maximum alignment distance refers to the maximum alignment distance that the lower beam 12B of the second electric curtain 1B can move during alignment. The maximum alignment distance can be a preset distance or a percentage of the maximum movement distance of the lower beam. The maximum movement distances of the lower beams of the first electric curtain 1A and the second electric curtain 1B can be the same or different; similarly, the maximum alignment distances of the lower beams can also be the same or different.

[0024] When the electric curtain system includes three electric curtains, when the control device of the first electric curtain 1A determines that the difference between the maximum movement distance of its lower beam and the maximum movement distance of the lower beam in the received second alignment packet is greater than a predetermined threshold, the control device of the first electric curtain 1A will discard the second alignment packet. The discarded alignment packet will not be used as the basis for controlling the alignment of the lower beam 12A. That is, the lower beam 12A will be aligned using the first alignment packet and the third alignment packet provided by the third electric curtain. Similarly, when the control device of the second electric curtain 1B determines that the difference between the maximum movement distance of its lower beam and the maximum movement distance of the lower beam in the received first alignment packet is greater than a predetermined threshold, the control device of the second electric curtain 1B will discard the first alignment packet. The discarded alignment packet will not be used as the basis for controlling the alignment of the lower beam 12B. That is, the lower beam 12B will be aligned using the second alignment packet and the third alignment packet provided by the third electric curtain.

[0025] In another embodiment, the alignment of the lower beams 12A and 12B can be performed only by the first electric curtain 1A and the second electric curtain 1B, which are of the same curtain type, in the same group, and have the same maximum moving distance of the lower beam. Furthermore, if the distance required for the lower beam 12A of the first electric curtain 1A to move to the alignment position is greater than the maximum alignment distance of the lower beam of the first electric curtain 1A, then the control device of the first electric curtain 1A will not perform the alignment of the lower beam 12A.

[0026] Please refer to Figure 5 next. Figure 5 is a schematic diagram of the first electric curtain using the minimum scale alignment method according to an embodiment of the present invention. In order to make the alignment of the lower beam 12A more accurate, in addition to the execution of the automatic alignment method of the propagation packet, the control device can also execute the minimum scale alignment method. In the left side of Figure 5, the first electric curtain 1A receives a specific remote control command at position Y4 to move the lower beam 12A downward by a certain distance. The control device of the first electric curtain 1A will recalculate the predetermined target position that conforms to an integer multiple of the minimum scale, such as position Y5, according to the distance that the lower beam 12A needs to move, so as to move the lower beam 12A of the first electric curtain 1A to position Y5, which is an integer multiple of the minimum scale. The minimum scale is, for example, but not limited to, the distance corresponding to ten rotations of the lower beam motor, and the present invention is not limited thereto.

[0027] Unlike the scenario on the left side of Figure 5, in the scenario on the right side of Figure 5, after receiving a remote control command that does not specify a position for the electric curtain 1A, the user visually observes the lower beam 12A moving. Once the user has visually observed the lower beam 12A moving to a predetermined position, such as position Y5, the electric curtain 1A receives a specific remote control command to stop. Without using the minimum scale alignment method, the control device plans the target position as position Y6 based on the current speed and deceleration mechanism of the lower beam motor. However, position Y6 is not an integer multiple of the minimum scale. Using the minimum scale alignment method, the control device will adjust the target position to a corrected position Y7, where position Y7 is an integer multiple of the minimum scale. Simply put, when using the minimum scale alignment method, the final stopping position of the lower beam 12 will only be an integer multiple of the minimum scale.

[0028] Please refer to Figure 6 next. Figure 6 is a schematic diagram of the automatic alignment method using a propagation packet for the first and second electric curtains according to an embodiment of the present invention. Because of the use of a small-scale alignment method, after the control devices of the first electric curtain 1A and the second electric curtain 1B receive two remote control commands—a movement command and a stop command—in sequence, the lower beams 12 of the first electric curtain 1A and the second electric curtain 1B stop at positions Y2 and Y3 respectively, where each of positions Y2 and Y3 is an integer multiple of the smallest scale. Next, the control devices of the electric curtains 1A and 1B execute the aforementioned automatic alignment method using a propagation packet. The control device of electric curtain 1A controls the lower beam motor to move its lower beam 12A down to position Y3 based on the received second alignment packet and its own first alignment packet, while the control device of the second electric curtain 1B does not move its lower beam 12B based on the received first alignment packet and its own second alignment packet. In short, after automatic alignment, the lower beams 12 of the first electric curtain 1A and the second electric curtain 1B are located at a lower beam alignment position, and the lower beam alignment position is an integer multiple of the smallest scale.

[0029] Please refer to Figures 7 and 8 next. Figure 7 is a schematic diagram of a first electric curtain according to another embodiment of the present invention, and Figure 8 is a partially enlarged schematic diagram of the lower beam motor, middle beam motor and control device of the first electric curtain according to another embodiment of the present invention. Unlike the first electric curtain in Figures 1 and 2, in this embodiment, the first electric curtain further includes a middle beam 14 disposed between the upper beam 10 and the lower beam 12. The internal space of the upper beam 10 is further configured with a middle beam motor 101', a middle beam winding shaft 102' and a middle beam encoder 105'. The middle beam encoder 105' can sense the rotation of the middle beam motor 101' and generate a middle beam encoding signal. The middle beam encoder 105' is composed of a middle beam magnetic wheel 1051' connected to the middle beam motor 101' and a magnetic sensor 1052' fixed to the middle beam motor 101' and close to the periphery of the middle beam magnetic wheel 1051'. In addition, the center beam motor 101', the center beam winding shaft 102' and the center beam encoder 105' constitute a center beam drive assembly, which can drive the center beam 14 to move relative to the upper beam 10 and between the upper limit position and the lower limit position of the center beam.

[0030] The power supply unit 103 is electrically connected to the center beam motor 101' and the center beam encoder 105' to provide DC power to the center beam motor 101' and the center beam encoder 105'. The control device 106 is electrically connected to the center beam motor 101' and the center beam encoder 105' to control the rotation of the center beam motor 101' and receive the center beam encoding signal generated by the center beam encoder 105'. The center beam motor 101' is connected to two center beam winding shafts 102' through the center beam drive shaft 104', so that the two center beam winding shafts 102' are synchronously driven by the rotation of the center beam motor 101'. Two center beam winding spools 102' are connected to the center beam 14 via two center beam pull ropes 13', one end of which is connected to the center beam winding spool 102', and the other end is fixed to the center beam 14. When the control device 106 controls the center beam motor 101' to rotate, causing the center beam winding spool 102' to wind up or release the center beam pull rope 13', the center beam 14 moves relative to the upper beam 10 between the upper and lower limits of the center beam. Since the center beam encoder 105' can sense the rotation of the center beam motor 101', when the control device 106 controls the center beam motor 101' to stop, the center beam encoder 105' generates a center beam encoding signal representing the current position of the center beam 14 when it stops or is stationary in the first electric curtain. In addition, in this embodiment, the curtain 11 is connected between the middle beam 14 and the lower beam 12, or a curtain can be connected between the middle beam 14 and the lower beam 12 and between the upper beam 10 and the middle beam 14 respectively (not shown).

[0031] In this embodiment, the middle beam drive assembly is disposed in the internal space of the upper beam 10, but in other embodiments, part or all of the middle beam drive assembly may be disposed in the internal space of the lower beam 12 or the middle beam 14, or outside the upper beam 10, the lower beam 12 and the middle beam 14 but near the curtain.

[0032] After the middle beam 14 and the lower beam 12 of the first electric curtain move and stop (for example, the control device 106 receives a movement command and a stop command in sequence, or receives a designated position command that directly causes the middle beam 14 and the lower beam 12 to reach a designated position), or after the middle beam 14 and the lower beam 12 of the first electric curtain remain stationary for a period of time, the control device 106 receives a specific remote control command for active alignment. The control device 106 will then execute the automatic alignment method of the propagation packet. The first alignment packet includes, in addition to the information on the current position of the lower beam 12 of the first electric curtain when it stops or remains stationary, the information on the current position of the middle beam 14 of the first electric curtain when it stops or remains stationary. The second alignment packet includes, in addition to the information on the current position of the lower beam 12 of the second electric curtain when it stops or remains stationary, the information on the current position of the middle beam 14 of the second electric curtain when it stops or remains stationary. Therefore, the control device of the first electric curtain can determine the alignment positions of the lower beam and the middle beam based on the received second alignment packet and its own first alignment packet, and control the lower beam motor '101' and the middle beam motor '101' to position the lower beam 12 and the middle beam 14 at the middle beam alignment position. The control device of the second electric curtain can determine the alignment positions of the lower beam and the middle beam based on the received first alignment packet and its own second alignment packet, and control its lower beam motor and the middle beam motor to position the lower beam and the middle beam at the middle beam alignment position.

[0033] It should be noted that, in one scenario, the upper limit position of the lower beam of the first electric curtain and the upper limit position of the lower beam of the second electric curtain are aligned at the first upper limit initial position, and the distance between the current position of the lower beam and the first upper limit initial position is the lower beam movement distance; and the upper limit position of the middle beam of the first electric curtain and the upper limit position of the middle beam of the second electric curtain are aligned at the second upper limit initial position, and the distance between the current position of the middle beam and the second upper limit initial position is the middle beam movement distance. In another scenario, the lower limit position of the lower beam of the first electric curtain and the lower limit position of the lower beam of the second electric curtain are aligned at the first lower limit initial position, and the distance between the current position of the lower beam and the first lower limit initial position is the lower beam movement distance; and the lower limit position of the middle beam of the first electric curtain and the lower limit position of the middle beam of the second electric curtain are aligned at the second lower limit initial position, and the distance between the current position of the middle beam and the second lower limit initial position is the middle beam movement distance.

[0034] In addition, if the minimum scale alignment method is used, the alignment position of the middle beam 14 to the second upper limit initial position or the second lower limit initial position is an integer multiple of the minimum scale, and the alignment position of the lower beam 12 to the first upper limit initial position or the first lower limit initial position is also an integer multiple of the minimum scale. That is, after automatic alignment, the lower beam 12 is located at the lower beam alignment position, the middle beam 14 is located at the middle beam alignment position, and each of the lower beam alignment position and the middle beam alignment position is an integer multiple of the minimum scale. In addition, in addition to the aforementioned first alignment packet and second alignment packet, the control device 106 can also consider the previous movement direction of the middle beam 14 to align the middle beam 14. On the other hand, the first alignment packet may further include information on the maximum movement distance of the lower beam between the upper limit position and the lower limit position of the lower beam of the first motorized curtain, the predetermined maximum alignment distance of the lower beam (i.e., the maximum distance that the lower beam can move from its current position to its alignment position), the maximum movement distance of the middle beam between the upper limit position and the lower limit position of the middle beam, and the predetermined maximum alignment distance of the middle beam (i.e., the maximum distance that the middle beam can move from its current position to its alignment position). The second alignment packet further includes information on the maximum movement distance of the lower beam between the upper limit position and the lower limit position of the lower beam of the second motorized curtain, the predetermined maximum alignment distance of the lower beam (i.e., the maximum distance that the lower beam can move from its current position to its alignment position), the maximum movement distance of the middle beam between the upper limit position and the lower limit position of the middle beam, and the predetermined maximum alignment distance of the middle beam (i.e., the maximum distance that the middle beam can move from its current position to its alignment position). When there are three or more motorized curtains in the motorized curtain system, during the automatic alignment of the center beam 14 and the bottom beam 12, the control device 106 can still determine whether to discard the second alignment packet based on the information of the second alignment packet, instead of using the discarded second alignment packet as the basis for aligning the center beam 14 and the bottom beam 12. For example, when there is a third motorized curtain in the motorized curtain system, the control device 106 of the first motorized curtain discards the second alignment packet of the second motorized curtain after judgment, and aligns the center beam 14 and the bottom beam 12 based on the first alignment packet of the first motorized curtain and the third alignment packet of the third motorized curtain.

[0035] Please refer to Figure 9, which is a schematic diagram of the misalignment of the middle beam and lower beam of the first and second electric curtains of the curtain system according to an embodiment of the present invention. In this embodiment, the upper beams 10A and 10B of the first electric curtain 1A and the second electric curtain 1B are arranged at position Y1 on the vertical axis and aligned at position Y1, and their lower beams 12A and 12B can move between the upper limit height position P1 and the lower limit height position P2 of the lower beam, and their middle beams 14A and 14B can move between the upper limit position P3 and the lower limit position P4 of the middle beam. When the control devices of the first electric curtain 1A and the second electric curtain 1B receive a control command, such as a command to move the middle beams 14A and 14B and the lower beams 12A and 12B downwards, the control devices of the first electric curtain 1A and the second electric curtain 1B respectively control their lower beam motors and middle beam motors to move the lower beams 12A and 12B and the middle beams 14A and 14B downwards. Then, when the control devices of the electric curtains 1A and 1B receive a specific remote control command to stop, they will control their lower beam motors and middle beam motors to stop the lower beams 12A and 12B and the middle beams 14A and 14B. At this time, due to the time difference in receiving the signal, the lower beams 12A and 12B of the first electric curtain 1A and the second electric curtain 1B will stop at positions Y4 and Y5 respectively, and the middle beams 14A and 14B of the first electric curtain 1A and the second electric curtain 1B will stop at positions Y2 and Y3 respectively.

[0036] Through the lower beam coding signal and the middle beam coding signal of the first electric curtain 1A, the control device of the first electric curtain 1A determines the current position of the lower beam 12A when it stops or is stationary as position Y4, and the current position of the middle beam 14A when it stops or is stationary as position Y2. Similarly, through the lower beam coding signal and the middle beam coding signal of the second electric curtain 1B, the control device of the second electric curtain 1B determines the current position of the lower beam 12B when it stops or is stationary as position Y5, and the current position of the middle beam 14B when it stops or is stationary as position Y3. However, as can be clearly seen from Figure 9, the lower beams 12A and 12B of the first electric curtain 1A and the second electric curtain 1B are not aligned, and the middle beams 14A and 14B of the first electric curtain 1A and the second electric curtain 1B are also not aligned. This results in the overlapping and messy covering positions of the adjacent first electric curtain 1A and second electric curtain 1B, which does not meet the user's expectations and affects the visual aesthetics. At this time, the control devices of the first electric curtain 1A and the second electric curtain 1B in this embodiment of the invention execute the automatic alignment method of propagation packets. The control device of the first electric curtain 1A generates and propagates a first alignment packet to the second electric curtain 1B, while the control device of the second electric curtain 1B generates and propagates a second alignment packet to the first electric curtain 1A. The first alignment packet includes information on the current position of the lower beam and the current position of the middle beam of the first electric curtain 1A, while the second alignment packet includes information on the current position of the lower beam and the current position of the middle beam of the second electric curtain 1B. The control devices of the first electric curtain 1A and the second electric curtain 1B automatically align the lower beams 12A and 12B with the middle beams 14A and 14B based on the first alignment packet and the second alignment packet. In this embodiment, the control device of the first electric curtain 1A determines the lower beam alignment position as position Y5 based on the first alignment packet and the second alignment packet, and controls the lower beam motor of the first electric curtain 1A to move the lower beam 12A of the first electric curtain 1A downward to position Y5; or, the control device of the second electric curtain 1B determines the lower beam alignment position as position Y4 based on the first alignment packet and the second alignment packet, and controls the lower beam motor of the second electric curtain 1B to move the lower beam 12B of the second electric curtain 1B upward to position Y4; the control device of the first electric curtain 1A determines the middle beam alignment position as position Y3 based on the first alignment packet and the second alignment packet, and controls the middle beam motor of the first electric curtain 1A to move the middle beam 14A of the first electric curtain 1A downward to position Y3; or, the control device of the second electric curtain 1B determines the middle beam alignment position as position Y2 based on the first alignment packet and the second alignment packet, and controls the middle beam motor of the second electric curtain 1B to move the middle beam 14B of the second electric curtain 1B upward to position Y2.Preferably, based on the previous moving directions of the middle beams 14A and 14B and the lower beams 12A and 12B, the control device of the first electric curtain 1A determines that the lower beam alignment position is position Y5 and the middle beam alignment position is position Y3. That is, it controls the lower beam motor and the middle beam motor of the first electric curtain 1A to move the lower beam 12A of the first electric curtain 1A down to position Y5 and the middle beam 14A of the first electric curtain 1A down to position Y3.

[0037] Based on the above, the present invention also provides a curtain alignment method. Please refer to Figure 10, which is a flowchart of the curtain alignment method according to an embodiment of the present invention. This curtain alignment method MS is used in an electric curtain system including a first electric curtain and a second electric curtain, and includes the following steps: In step S1, after receiving a specific remote control command, the control device of the first electric curtain sends a first alignment packet to the second electric curtain, wherein the first alignment packet includes information on the current position of the lower beam of the first electric curtain when it stops or is stationary; In step S2, after receiving a specific remote control command, the control device of the second electric curtain sends a second alignment packet to the first electric curtain, wherein the second alignment packet includes information on the current position of the lower beam of the second electric curtain when it stops or is stationary; In step S3, the control device of the first electric curtain determines the lower beam alignment position based on the first alignment packet and the second alignment packet, and controls the lower beam motor of the first electric curtain to make the lower beam of the first electric curtain be in the lower beam alignment position; and In step S4, the control device of the second electric curtain determines the lower beam alignment position based on the first alignment packet and the second alignment packet, and controls the lower beam motor of the second electric curtain to make the lower beam of the second electric curtain be in the lower beam alignment position. Furthermore, the specific remote control command can be a stop command, an active alignment command, or a specified position command. Moreover, the order of steps S1 and S2 is not intended to limit the invention; that is, step S2 can be performed before step S1, or simultaneously. Similarly, the order of steps S3 and S4 is not intended to limit the invention; that is, step S4 can be performed before step S3, or simultaneously.

[0038] In the above method, the first alignment packet further includes information on the current position of the middle beam when the middle beam of the first electric curtain stops or is stationary, and the second alignment packet further includes information on the current position of the middle beam when the middle beam of the second electric curtain stops or is stationary. In steps S3 and S4, the control device of the first electric curtain and the control device of the second electric curtain each determine the alignment position of the lower beam according to the first alignment packet and the second alignment packet, and control the lower beam motor of the first electric curtain and the lower beam motor of the second electric curtain to make the lower beam of the first electric curtain and the lower beam of the second electric curtain respectively located at the lower beam alignment position. The control device of the first electric curtain and the control device of the second electric curtain each determine the alignment position of the middle beam according to the first alignment packet and the second alignment packet, and control the middle beam motor of the first electric curtain and the middle beam motor of the second electric curtain to make the middle beam of the first electric curtain and the middle beam of the second electric curtain respectively located at the middle beam alignment position.

[0039] In the above method, the upper limit position of the lower beam of the first electric curtain is aligned with the upper limit position of the lower beam of the second electric curtain at the first upper limit initial position, and the distance between the current position of the lower beam of the first electric curtain and the first upper limit initial position is the moving distance of the lower beam of the first electric curtain; the distance between the current position of the lower beam of the second electric curtain and the first upper limit initial position is the moving distance of the lower beam of the second electric curtain; and the upper limit position of the middle beam of the first electric curtain is aligned with the upper limit position of the middle beam of the second electric curtain at the second upper limit initial position, and the distance between the current position of the middle beam of the first electric curtain and the second upper limit initial position is the moving distance of the middle beam of the first electric curtain; the distance between the current position of the middle beam of the second electric curtain and the second upper limit initial position is the moving distance of the middle beam of the second electric curtain. The moving distance; or, the lower limit of the lower beam of the first electric curtain and the lower limit of the lower beam of the second electric curtain are aligned at the initial position of the first lower limit, and the moving distance of the lower beam of the first electric curtain is between the current position of the lower beam of the first electric curtain and the initial position of the first lower limit, and the moving distance of the lower beam of the second electric curtain is between the current position of the lower beam of the second electric curtain and the initial position of the first lower limit; and the lower limit of the middle beam of the first electric curtain and the lower limit of the middle beam of the second electric curtain are aligned at the initial position of the second lower limit, and the moving distance of the middle beam of the first electric curtain is between the current position of the middle beam of the first electric curtain and the initial position of the second lower limit, and the moving distance of the middle beam of the second electric curtain is between the current position of the middle beam of the second electric curtain and the initial position of the second lower limit.

[0040] In the above method, the lower beam of the first electric curtain and the lower beam of the second electric curtain are aligned at the lower beam alignment position, the middle beam of the first electric curtain and the middle beam of the second electric curtain are aligned at the middle beam alignment position, and each of the lower beam alignment position and the middle beam alignment position is an integer multiple of the minimum scale.

[0041] In the above method, the first alignment packet further includes information on the maximum movement distance of the lower beam between the upper limit position and the lower limit position of the lower beam of the first electric curtain, the predetermined maximum alignment distance of the lower beam of the first electric curtain, the maximum movement distance of the middle beam between the upper limit position and the lower limit position of the middle beam of the first electric curtain, and the predetermined maximum alignment distance of the middle beam of the first electric curtain. The second alignment packet further includes information on the maximum movement distance of the lower beam between the upper limit position and the lower limit position of the lower beam of the second electric curtain, the predetermined maximum alignment distance of the lower beam of the second electric curtain, the maximum movement distance of the middle beam between the upper limit position and the lower limit position of the middle beam of the second electric curtain, and the predetermined maximum alignment distance of the middle beam of the second electric curtain.

[0042] In summary, the electric curtains, electric curtain systems and curtain alignment methods provided by the present invention have at least the following characteristics: (1) Using the automatic alignment method of propagation packets, each electric curtain can be aligned by itself without the need for an external centralized management console; (2) Without the need for an external centralized management console, costs and power consumption are reduced, making it more competitive in the market and in line with the trend of energy conservation and carbon saving; (3) It can also be combined with the minimum scale alignment method to further improve the alignment accuracy; (4) The curtain alignment method is applicable to various types of curtains, such as the honeycomb blinds or Venetian blinds mentioned above. The curtain alignment method can also be used for roller blinds, that is, in addition to electric honeycomb blinds or electric Venetian blinds, electric roller blinds can also be used. In short, the curtain alignment method is versatile.

[0043] This invention is disclosed herein only by preferred embodiments. However, it should be understood by anyone skilled in the art that the above embodiments are only used to describe the invention and are not intended to limit the scope of the patent rights claimed by the invention. Any changes or substitutions that are equivalent to or equivalent to the above embodiments should be interpreted as being covered within the spirit or scope of the invention. Therefore, the scope of protection of this invention should be based on the claims defined below. [Simplified Explanation of the Diagram]

[0044] Figure 1 is a schematic diagram of the first electric curtain according to an embodiment of the present invention. Figure 2 is an enlarged schematic diagram of the lower beam motor and control device of the first electric curtain according to an embodiment of the present invention. Figure 3 is a functional block diagram of the first electric curtain according to an embodiment of the present invention. Figure 4 is a schematic diagram of the misalignment of the lower beams of the first and second electric curtains in the curtain system according to an embodiment of the present invention. Figure 5 is a schematic diagram of the first electric curtain using the minimum scale alignment method according to an embodiment of the present invention. Figure 6 is a schematic diagram of the first and second electric curtains using the propagation packet automatic alignment method according to an embodiment of the present invention. Figure 7 is a schematic diagram of the first electric curtain according to another embodiment of the present invention. Figure 8 is a partially enlarged schematic diagram of the lower beam motor, middle beam motor, and control device of the first electric curtain according to another embodiment of the present invention. Figure 9 is a schematic diagram of the misalignment of the middle beam and lower beam of the first and second electric curtains in the curtain system according to an embodiment of the present invention. Figure 10 is a flowchart of the curtain alignment method according to an embodiment of the present invention.

Claims

1. A first motorized curtain, comprising: A top beam; a bottom beam, disposed below the top beam and drivable to move relative to the top beam and between an upper limit and a lower limit of the bottom beam; a bottom beam drive assembly, including a bottom beam motor and a bottom beam encoder, wherein the bottom beam encoder senses the rotation of the bottom beam motor to generate a bottom beam coded signal representing the current position of the bottom beam; a control device electrically connected to the bottom beam motor and the bottom beam encoder, the control device being used to control the bottom beam motor to drive the bottom beam to move and to receive the bottom beam coded signal from the bottom beam encoder; and a power supply unit electrically connected to the bottom beam motor, the control device, and the bottom beam encoder; The control device is configured to, upon receiving a specific remote control command, send a first alignment packet to a second motorized curtain and receive a second alignment packet from the second motorized curtain. Based on the first and second alignment packets, the control device determines the alignment position of the lower beam and controls the lower beam motor to position the lower beam at the alignment position. The first alignment packet includes at least information about the current position of the lower beam of the first motorized curtain when it stops or is stationary, and the second alignment packet includes at least information about the current position of the lower beam of the second motorized curtain when it stops or is stationary.

2. The first motorized curtain as described in claim 1 further comprises: A center beam is disposed between the upper beam and the lower beam and is driveable to move relative to the upper beam and between an upper limit position and a lower limit position of the center beam; a center beam drive assembly includes a center beam motor and a center beam encoder, the center beam encoder sensing the rotation of the center beam motor to generate a center beam coded signal representing the current position of the center beam; wherein the power supply unit is electrically connected to the center beam motor and the center beam encoder; wherein the control device is electrically connected to the center beam encoder and the center beam motor for controlling the center beam motor to drive the center beam to move and receiving the center beam coded signal from the center beam encoder, the first alignment packet further includes information on the current position of the center beam of the first electric curtain when it stops or is stationary, and the second alignment packet further includes information on the current position of the center beam of the second electric curtain when it stops or is stationary; The control device is configured to, upon receiving the specific remote control command, determine the alignment position of the lower beam and the alignment position of the middle beam based on the first alignment packet and the second alignment packet, and control the lower beam motor to position the lower beam at the lower beam alignment position, and control the middle beam motor to position the middle beam at the middle beam alignment position.

3. The first motorized curtain as claimed in claim 1, wherein the upper limit position of the lower beam of the first motorized curtain and the upper limit position of the lower beam of the second motorized curtain are configured at a first upper limit initial position, and the current position of the lower beam and the first upper limit initial position are the lower beam movement distance; or, the lower limit position of the lower beam of the first motorized curtain and the lower limit position of the lower beam of the second motorized curtain are configured at a first lower limit initial position, and the current position of the lower beam and the first lower limit initial position are the lower beam movement distance.

4. The first motorized curtain as claimed in claim 2, wherein the upper limit position of the lower beam of the first motorized curtain and the upper limit position of the lower beam of the second motorized curtain are configured at a first upper limit initial position, and the distance between the current position of the lower beam and the first upper limit initial position is a lower beam movement distance; and the upper limit position of the middle beam of the first motorized curtain and the upper limit position of the middle beam of the second motorized curtain are configured at a second upper limit initial position, and the distance between the current position of the middle beam and the second upper limit initial position is a middle beam movement distance; or, the lower limit position of the lower beam of the first motorized curtain and the lower limit position of the lower beam of the second motorized curtain are configured at a first lower limit initial position, and the distance between the current position of the lower beam and the first lower limit initial position is the lower beam movement distance; and the lower limit position of the middle beam of the first motorized curtain and the lower limit position of the middle beam of the second motorized curtain are configured at a second lower limit initial position, and the distance between the current position of the middle beam and the second lower limit initial position is the middle beam movement distance.

5. The first electric curtain as claimed in claim 3, wherein the control device controls the lower beam motor according to the first alignment packet and the second alignment packet, so that the lower beam is located at the lower beam alignment position, and the lower beam alignment position is an integer multiple of a minimum scale.

6. The first motorized curtain as claimed in claim 4, wherein the control device controls the lower beam motor according to the first alignment packet and the second alignment packet to position the lower beam at the lower beam alignment position, and controls the middle beam motor to position the middle beam at the middle beam alignment position, wherein each of the lower beam alignment position and the middle beam alignment position is an integer multiple of a minimum scale.

7. The first motorized curtain as claimed in claim 1, wherein the first alignment packet further includes information on the maximum movement distance of the lower beam between the upper limit position and the lower limit position of the lower beam of the first motorized curtain and a predetermined maximum alignment distance of the lower beam, and the second alignment packet further includes information on the maximum movement distance of the lower beam between the upper limit position and the lower limit position of the lower beam of the second motorized curtain and a predetermined maximum alignment distance of the lower beam.

8. The first motorized curtain as claimed in claim 2, wherein the first alignment packet further includes information on the maximum movement distance of the lower beam between the upper limit position and the lower limit position of the lower beam, a predetermined maximum alignment distance of the lower beam, the maximum movement distance of the middle beam between the upper limit position and the lower limit position of the middle beam, and the predetermined maximum alignment distance of the middle beam; and the second alignment packet further includes information on the maximum movement distance of the lower beam between the upper limit position and the lower limit position of the lower beam, the predetermined maximum alignment distance of the lower beam, the maximum movement distance of the middle beam between the upper limit position and the lower limit position of the middle beam, and the predetermined maximum alignment distance of the middle beam.

9. The first motorized curtain as claimed in claim 1, wherein the control device determines the alignment position of the lower beam based on the first alignment envelope, the second alignment envelope and a previous movement direction of the lower beam, and controls the lower beam motor to position the lower beam at the lower beam alignment position.

10. A curtain alignment method for a first motorized curtain and a second motorized curtain, comprising: After receiving a specific remote control command, the control device of the first electric curtain sends a first alignment packet to the second electric curtain, wherein the first alignment packet includes information on the current position of the lower beam of the first electric curtain when it stops or is stationary; after receiving the specific remote control command, the control device of the second electric curtain sends a second alignment packet to the first electric curtain, wherein the second alignment packet includes information on the current position of the lower beam of the second electric curtain when it stops or is stationary; the control device of the first electric curtain determines the alignment position of the lower beam based on the first alignment packet and the second alignment packet, and controls the lower beam motor of the first electric curtain to position the lower beam of the first electric curtain at the lower beam alignment position; and the control device of the second electric curtain determines the alignment position of the lower beam based on the first alignment packet and the second alignment packet, and controls the lower beam motor of the second electric curtain to position the lower beam of the second electric curtain at the lower beam alignment position.

11. The curtain alignment method as described in claim 10, wherein the first alignment packet further includes information on the current position of one of the center beams of the first electric curtain when it stops or is stationary, the second alignment packet further includes information on the current position of one of the center beams of the second electric curtain when it stops or is stationary, and the control device of the first electric curtain and the control device of the second electric curtain respectively determine the alignment position of the lower beam based on the first alignment packet and the second alignment packet, and respectively control the lower beam motor of the first electric curtain and the lower beam motor of the second electric curtain, so that the lower beam of the first electric curtain and the lower beam of the second electric curtain are respectively located at the lower beam alignment position, and the control device of the first electric curtain and the control device of the second electric curtain respectively determine the alignment position of the center beam based on the first alignment packet and the second alignment packet, and respectively control the center beam motor of the first electric curtain and the center beam motor of the second electric curtain, so that the center beam of the first electric curtain and the center beam of the second electric curtain are respectively located at the center beam alignment position.

12. The curtain alignment method as described in claim 10, wherein the upper limit position of the lower beam of the first electric curtain and the upper limit position of the lower beam of the second electric curtain are configured at a first upper limit initial position, and the distance between the current position of the lower beam of the first electric curtain and the first upper limit initial position is the moving distance of the lower beam of the first electric curtain, and the distance between the current position of the lower beam of the second electric curtain and the first upper limit initial position is the moving distance of the lower beam of the second electric curtain; or, the lower limit position of the lower beam of the first electric curtain and the lower limit position of the lower beam of the second electric curtain are configured at a first lower limit initial position, and the distance between the current position of the lower beam of the first electric curtain and the first lower limit initial position is the moving distance of the lower beam of the first electric curtain, and the distance between the current position of the lower beam of the second electric curtain and the first lower limit initial position is the moving distance of the lower beam of the second electric curtain.

13. The curtain alignment method as described in claim 11, wherein the upper limit position of the lower beam of the first electric curtain and the upper limit position of the lower beam of the second electric curtain are configured at a first upper limit initial position, and the distance between the current position of the lower beam of the first electric curtain and the first upper limit initial position is the moving distance of the lower beam of the first electric curtain, the distance between the current position of the lower beam of the second electric curtain and the first upper limit initial position is the moving distance of the lower beam of the second electric curtain, and the upper limit position of the middle beam of the first electric curtain and the upper limit position of the middle beam of the second electric curtain are configured at a second upper limit initial position, and the distance between the current position of the middle beam of the first electric curtain and the second upper limit initial position is the moving distance of the middle beam of the first electric curtain, the distance between the current position of the middle beam of the second electric curtain and the second upper limit initial position is the moving distance of the middle beam of the second electric curtain. The movement distance of the center beam of the curtain; or, the lower limit position of the lower beam of the first electric curtain and the lower limit position of the lower beam of the second electric curtain are configured at a first lower limit initial position, and the current position of the lower beam of the first electric curtain and the first lower limit initial position are the movement distance of the lower beam of the first electric curtain, the current position of the lower beam of the second electric curtain and the first lower limit initial position are the movement distance of the lower beam of the second electric curtain, and the lower limit position of the center beam of the first electric curtain and the lower limit position of the center beam of the second electric curtain are configured at a second lower limit initial position, and the current position of the center beam of the first electric curtain and the second lower limit initial position are the movement distance of the center beam of the first electric curtain, the current position of the center beam of the second electric curtain and the second lower limit initial position are the movement distance of the center beam of the second electric curtain.

14. The curtain alignment method as described in claim 11, wherein the lower beam of the first electric curtain is aligned with the lower beam of the second electric curtain at the lower beam alignment position, the middle beam of the first electric curtain is aligned with the middle beam of the second electric curtain at the middle beam alignment position, and each of the lower beam alignment position and the middle beam alignment position is an integer multiple of a minimum scale.

15. The curtain alignment method as described in claim 13, wherein the first alignment packet further includes information on the maximum movement distance of the lower beam between the upper limit position and the lower limit position of the lower beam of the first electric curtain, the predetermined maximum alignment distance of the lower beam of the first electric curtain, the maximum movement distance of the middle beam between the upper limit position and the lower limit position of the middle beam of the first electric curtain, and the predetermined maximum alignment distance of the middle beam of the first electric curtain; and the second alignment packet further includes information on the maximum movement distance of the lower beam between the upper limit position and the lower limit position of the lower beam of the second electric curtain, the predetermined maximum alignment distance of the lower beam of the second electric curtain, the maximum movement distance of the middle beam between the upper limit position and the lower limit position of the middle beam of the second electric curtain, and the predetermined maximum alignment distance of the middle beam of the second electric curtain.

16. An electric curtain system, comprising: The first electric curtain as described in any one of claims 1 to 9; And the second motorized curtain, which is wirelessly connected to the first motorized curtain.

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