A method and system for controlling electric curtains with double guide rails and a single motor

Abstract

The present invention discloses a control method and system for electric curtains with double guide rails and a single motor, wherein the control method comprises: receiving a control instruction, and controlling the corresponding function of the electric curtain operation after analysis and processing; controlling the opening and closing states of the clutch component a and the clutch component b to switch and control the single guide rail / double guide rail operation; controlling the direction and speed of the electric curtain motor; and transmitting and outputting the motor power to drive the single track / double guide rail operation. The present invention can realize the use of the same motor to control the operation of a single guide rail curtain alone or the operation of a double guide rail curtain at the same time without increasing the cost, thereby meeting the needs of users to install cloth windows and screen windows on the electric curtain at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of electric curtains, and in particular to a control method and system for electric curtains with double guide rails and a single motor. Background Art

[0002] At present, the electric curtains on the market mainly use a single motor to control the opening and closing of a single-rail curtain. In this way, if the customer needs to install cloth windows and screen windows at the same time in his home, he needs to install two independent sets of rails and motors accordingly, which increases the manufacturing cost and adds burden to manufacturers and consumers. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a method and system for controlling electric curtains with dual guide rails and a single motor, which can meet the needs of customers for installing cloth windows and screen windows at the same time without increasing costs.

[0004] To achieve the above object, the present invention provides a method for controlling a double-track single-motor electric curtain, comprising the steps of:

[0005] Receive control instructions, analyze and process them, and then control the electric curtains to run corresponding functions;

[0006] Control the opening and closing status of clutch assembly a and clutch assembly b to switch and control single rail / double rail operation;

[0007] Control the direction and speed of the electric curtain motor;

[0008] The transmission outputs the motor power to drive the single track / double guide rail operation.

[0009] Preferably, the control method further comprises the steps of:

[0010] Detect the change of motor current and provide over-current protection for the motor.

[0011] Preferably, the control method further comprises the steps of:

[0012] At least two photoelectric grating sensors are used to detect the pulling direction and pulling stroke when a person pulls on the same guide rail.

[0013] Preferably, the initial state of the clutch assembly a and the clutch assembly b is a separation state; and / or the control instruction includes operating a single guide rail alone / operating two guide rails simultaneously.

[0014] Another aspect of the present invention is to provide a double-track single-motor electric curtain control system, comprising:

[0015] The main controller is used to receive control instructions, analyze and process them, and then control the electric curtains to run corresponding functions;

[0016] Clutch assembly a;

[0017] Clutch assembly b;

[0018] The steering gear module a and the steering gear module b respectively control the opening and closing states of the clutch component a and the clutch component b to realize the switching control of single guide rail / double guide rail operation;

[0019] Motor drive module, controls the direction and speed of the electric curtain motor;

[0020] Transmission module, transmission output motor power, drives single track / double guide rail operation.

[0021] Preferably, the motor driving module detects the change of the motor current while driving the motor to operate, and performs overcurrent protection on the motor.

[0022] Preferably, the double-track single-motor electric curtain control system further includes:

[0023] A remote control module for sending control instructions; and / or

[0024] At least two travel detection modules are provided, and each travel detection module detects the pulling direction and pulling travel when a person pulls on the same guide rail by at least two grating sensors.

[0025] Preferably, the initial state of the clutch assembly a and the clutch assembly b is a separation state; and / or the control instruction includes operating a single guide rail alone / operating two guide rails simultaneously.

[0026] Preferably, the double-track single-motor electric curtain control system further includes:

[0027] A power supply module provides voltage and current for the control system.

[0028] Preferably, the main controller is an MCU controller.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present invention can use the same motor to control the operation of a single-track curtain alone or a double-track curtain at the same time, thereby meeting the needs of users to install cloth windows and screen windows on electric curtains at the same time. The present invention does not increase the corresponding manufacturing cost while adding the above functions, so that the product has extremely high market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a flow chart of a preferred embodiment of the electric curtain control method with double guide rails and a single motor of the present invention;

[0032] Figure 2 It is a schematic diagram of the system structure of the present invention;

[0033] Figure 3-a This is a schematic diagram of the system of the present invention after installation (the motor transmission connection position is set at the end of the guide rail a);

[0034] Figure 3-b This is a schematic diagram of the system of the present invention after installation (the motor transmission connection position is set at the end of the guide rail b);

[0035] Figure 4-a It is a front view of the stroke detection module of the present invention;

[0036] Figure 4-b is a top view of the stroke detection module of the present invention;

[0037] Figure 4-c It is a three-dimensional structural schematic diagram of the stroke detection module of the present invention;

[0038] Figure 5 This is a signal detection diagram of the first grating sensor and the second grating sensor in Operation Example 2 of the present invention.

[0039] Among them: 1-guide rail a; 2-guide rail b; 3-stroke detection module a; 4-stroke detection module b; 5-grating disk; 6-grating sensor a; 7-grating sensor b; 8-clutch assembly a; 9-clutch assembly b; 10-servo module a; 11-servo module b; 12-guide shaft; 13-gear; 14, 15-motor transmission connection position; 16-grating sensor c; 17-grating sensor d. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0041] like Figure 1 As shown, this embodiment provides a double-track single-motor electric curtain control system, including:

[0042] The main controller is used to receive control instructions from the remote control module, analyze and process them, and then control the electric curtains to run corresponding functions;

[0043] The control instructions include operating a single guide rail alone / operating dual guide rails simultaneously;

[0044] Clutch assembly a;

[0045] Clutch assembly b;

[0046] The steering gear module a and the steering gear module b receive control instructions from the main controller to control the opening and closing states of the clutch component a and the clutch component b respectively, so as to realize the switching control of single guide rail / double guide rail operation;

[0047] The motor drive module receives control instructions from the main controller to control the direction and speed of the electric curtain motor, and detects changes in the motor current while driving the motor to protect the motor from overcurrent.

[0048] The transmission module receives control instructions from the main controller to transmit output motor power and drive single track / double guide rail operation;

[0049] Among them, the steering gear module a, the steering gear module b, the motor drive module and the transmission module are electrically connected to the main controller respectively.

[0050] like Figure 2 As shown, in this embodiment, the clutch assembly a8 and the clutch assembly b9 are respectively installed on the guide rail a1 and the guide rail b2. The initial state of the clutch assembly a8 and the clutch assembly b9 are both separated, that is, they are located near the stroke detection module a3 and the stroke detection module b4 in the figure. After receiving the command of the main controller, they are attracted downward according to the corresponding command, thereby realizing the transmission connection with the guide rail where the clutch assembly is located, and realizing power drive. The steering gear module a10 and the steering gear module b11 are electrically connected to the clutch assembly a8 and the clutch assembly b9 respectively, and the transmission module is a guide shaft 12, which is respectively connected to the guide rail a1 and the guide rail b2 through the gear 13, and is used to drive the guide rail a1 and / or the guide rail b2 to run.

[0051] In this embodiment, the double-track single-motor electric curtain control system further includes:

[0052] Remote control module, used to send control instructions;

[0053] At least two stroke detection modules (stroke detection module a3, stroke detection module b4), each of which detects the pulling direction and pulling stroke when a person pulls on the same guide rail through at least two grating sensors (grating sensor a6 and grating sensor b7, grating sensor c16 and grating sensor d17); and

[0054] A power supply module provides voltage and current for the control system.

[0055] In this embodiment, the main controller is an MCU controller.

[0056] The present invention is further described below through specific operation examples. It should be noted that in the following operation examples, the guide rail a1 is configured to control the opening and closing of the cloth window, the guide rail b2 is configured to control the opening and closing of the screen window, and the motor is configured at the motor transmission connection position 15 (such as Figure 3-bHowever, in actual applications, the arrangement of the screen window and the cloth window is not limited thereto. The guide rail a1 can also be used to control the opening and closing of the screen window as required, and the guide rail b2 can also be used to control the opening and closing of the cloth window as required. At the same time, the motor can also be arranged at the motor transmission connection position 14 (such as Figure 3-a shown).

[0057] Operation example 1

[0058] Remote control operation mode:

[0059] The remote control module sends out corresponding control instructions, such as controlling the operation of guide rail a1 to control the opening of the cloth window. The corresponding servo module a10 receives the high level output by the MCU controller to pull the clutch component a8 downward. The state of the clutch component b9 corresponding to the guide rail b2 that controls the operation of the cloth window remains unchanged, and the default is the initial state (separated state). At this time, the screen window corresponding to the guide rail b2 cannot work. The MCU controller controls its PWM port to output a PWM signal to drive the motor drive module. The motor drive module outputs voltage and current to the motor. The motor drives the guide rail shaft 12 to rotate, and the guide rail shaft 12 further drives the cloth window on the guide rail a1 to open.

[0060] Similarly, if you want to make the guide rail b2 control the screen window to open, the corresponding control command is issued through the remote control module, and the corresponding servo module b11 receives the high level output by the MCU controller to make the clutch component b9 pull down. The clutch component a8 corresponding to the guide rail a1 remains unchanged and defaults to the initial state (separated state). At this time, the cloth window corresponding to the guide rail a1 cannot work. The PWM port of the MCU controller outputs a PWM signal to drive the motor drive module. The motor drive module outputs voltage and current to the motor, and the motor further drives the screen window to open.

[0061] When the screen window and the cloth window are working at the same time, the MCU controller can output a high level to the servo module a10 and the servo module b11 at the same time. At this time, the clutch assembly a8 and the clutch assembly b9 are both attracted downward, and the guide rail a1 and the guide rail b2 can run at the same time.

[0062] In this operation example, the remote control module can be an ordinary remote control, a smart remote control, or a mobile terminal such as a smart phone or a smart watch, and the control method can be infrared control, wireless WIFI control, or Bluetooth control.

[0063] In this operation example, the PWN signal can be defined to enable the motor to start and stop slowly, so as to protect the service life of the motor.

[0064] The motor drive module is equipped with an overcurrent protection chip, which has the function of judging current changes through voltage division detection. When the current increases due to the hand blocking the movement of the cloth window or other factors cause the current to increase rapidly, the motor drive module detects the corresponding signal, stops outputting voltage and stops the motor from working, thus playing the role of overcurrent protection.

[0065] Operation example 2

[0066] Manual control operation mode:

[0067] like Figure 4-a , 4-b As shown in 4-c, the travel detection modules a and b each include two grating disks 5 and two grating sensors. The two grating disks 5 have corresponding scales. The travel is recorded by recording the corresponding number of pulses to detect the movement distance of the cloth window / screen window. At the same time, the scales between the two grating disks 5 are staggered at a certain angle, so that there is a certain phase difference between each scale. Moreover, the grating sensor a6 and the grating sensor b7 are staggered up and down and arranged on both sides of the grating disk 5. According to the different signals of the two grating sensors on the same guide rail, the difference in their directions is determined by detecting the difference in PWM signals, and the travel of the cloth window on the guide rail a1 / the travel of the screen window on the guide rail b2 is recorded in real time.

[0068] When the cloth window is pulled by hand, the two grating sensors a6 and b7 on the guide rail a1 detect the movement of the motor at the same time. Figure 5 As shown in (a), when PWM1 (the signal detected by the grating sensor a6) is detected as a falling edge and PWM2 (the signal detected by the grating sensor b7) is detected as low, it is determined that the cloth window moves to the left on the guide rail a1. When the set distance is reached (the distance can be set to a suitable value according to the actual situation), the cloth window will continue to move on this guide rail in the determined left direction under the drive of the motor. Figure 5 As shown in (b), when PWM1 (the signal detected by the grating sensor a6) is detected as a falling edge and PWM2 (the signal detected by the grating sensor b7) is detected as high, it is judged that the cloth window moves to the right on the guide rail a1. When the set distance is reached, the cloth window will continue to move on this guide rail in the determined right direction under the drive of the motor.

[0069] Similarly, when the screen window is pulled by hand, the two grating sensors c16 and d17 on the guide rail b2 simultaneously detect the movement signal of the motor to determine the movement direction of the screen window on the guide rail b2. When the set distance is reached, the screen window will continue to move on this guide rail in the determined direction driven by the motor.

[0070] The above description is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A double-track single-motor electric curtain control system, characterized in that: include: Clutch assembly a, clutch assembly b, clutch assembly a, clutch assembly b are respectively mounted on guide rail a, guide rail b; The steering gear module a and the steering gear module b respectively control the opening and closing states of the clutch component a and the clutch component b to realize the switching control of single guide rail / double guide rail operation; Motor drive module, controls the direction and speed of the electric curtain motor; Transmission module, transmission output motor power, drive single track / double guide rail operation; The main controller is used to receive control instructions, analyze and process them, and then control the electric curtain to run corresponding functions; the steering gear module a, the steering gear module b, the motor drive module, and the transmission module are electrically connected to the main controller respectively; Stroke detection module a and stroke detection module b. Both stroke detection module a and stroke detection module b include two grating disks and two grating sensors. The two grating disks have corresponding scales. The stroke is recorded by recording the corresponding number of pulses to detect the movement distance of the cloth window / screen window. The scales between the two grating disks are staggered at a certain angle so that there is a certain phase difference between each scale. The grating sensor a and the grating sensor b are staggered up and down and arranged on both sides of the grating disk. According to the different signals of the two grating sensors on the same guide rail, the difference in their directions is judged by detecting the difference in PWM signals, and the stroke of the cloth window on guide rail a / the stroke of the screen window on guide rail b is recorded in real time.

2. The double-track single-motor electric curtain control system according to claim 1 is characterized in that: The motor drive module detects the change of the motor current while driving the motor to operate, and performs overcurrent protection on the motor.

3. The double-track single-motor electric curtain control system according to claim 1 or 2, characterized in that: Also includes: Remote control module, used to send control instructions.

4. The double-track single-motor electric curtain control system according to claim 1 or 2, characterized in that: The initial state of the clutch assembly a and the clutch assembly b is a separation state; and / or the control instruction includes operating a single guide rail alone / operating two guide rails simultaneously.

5. The double-track single-motor electric curtain control system according to claim 1 or 2, characterized in that: Also includes: A power supply module provides voltage and current for the control system.

6. The electric curtain control system with double guide rails and single motor according to claim 1 or 2, characterized in that: The main controller is an MCU controller.

7. A method for controlling electric curtains with double guide rails and a single motor as claimed in claim 1, characterized in that: Includes steps: Receive control instructions, analyze and process them, and then control the electric curtains to run corresponding functions; Control the opening and closing status of clutch assembly a and clutch assembly b to switch and control single rail / double rail operation; Control the direction and speed of the electric curtain motor; Transmission output motor power to drive single track / double guide rail operation; Manual control operation mode: When the cloth window / screen window is pulled by hand, the two grating sensors a and b on the guide rail a detect the movement of the motor at the same time. When the signal PWM1 detected by the grating sensor a is detected as a falling edge and the signal PWM2 detected by the grating sensor b is detected as low, it is judged that the cloth window / screen window is moving to the left on the guide rail a. When the set distance is reached, the cloth window / screen window will continue to move on this guide rail in the determined left direction under the drive of the motor. When PWM1 is detected as a falling edge and PWM2 is detected as high, it is judged that the cloth window / screen window is moving to the right on the guide rail a. When the set distance is reached, the cloth window / screen window will continue to move on this guide rail in the determined right direction under the drive of the motor.

8. The method for controlling electric curtains with double guide rails and a single motor according to claim 7, characterized in that: Also includes the steps: Detect the change of motor current and provide over-current protection for the motor.

9. The method for controlling electric curtains with double guide rails and a single motor according to claim 7 or 8, characterized in that: The initial state of the clutch assembly a and the clutch assembly b is a separation state; and / or the control instruction includes operating a single guide rail alone / operating two guide rails simultaneously.

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