Roller shutter motor control circuit board for greenhouse control

Abstract

The utility model discloses a roller shutter motor control circuit board for greenhouse control, and relates to the technical field of electronic circuits. A roller shutter motor control circuit is arranged on the main control chip; the roller shutter motor control circuit comprises three output interfaces, the three output interfaces are connected with five photoelectric couplers through five triodes and connected with five silicon controlled rectifiers through the five photoelectric couplers, and a U-phase coil, a W-phase coil and a V-phase coil of a roller shutter motor are connected with three power supply interfaces through the five silicon controlled rectifiers. By setting the circuit relation among the output interface, the triode, the photoelectric coupler, the silicon controlled rectifier, the power supply interface and the three-phase coil of the roller shutter motor, the power supply sequence of the three-phase coil of the roller shutter motor can be controlled by controlling the state of the silicon controlled rectifier, so that forward rotation and reverse rotation of the three-phase roller shutter motor are controlled; and the control flexibility and accuracy of the roller shutter motor are improved.

Description

Technical Field

[0001] This application relates to the field of electronic circuit technology, and in particular to a control circuit board for a roller shutter motor used in greenhouse control. Background Technology

[0002] With the continuous development of technologies such as the Internet of Things, big data, and artificial intelligence, intelligent agriculture has become a future trend. As a crucial component of greenhouse control systems, the research and development of roller shutter motor control circuits is of great significance for promoting intelligent agriculture.

[0003] In the prior art, Chinese patent CN114115077A discloses a greenhouse light intensity control opening and closing circuit and its roller shutter motor control circuit, which includes a photovoltaic supply circuit I, a first energy consumption regulation circuit II, a switching circuit III, a relay control circuit IV, a second energy consumption regulation circuit VI, an energy storage buffer circuit VII, and a control output circuit VIII connected in parallel.

[0004] The aforementioned existing technology controls the forward and reverse rotation of the roller shutter motor M by switching the main contacts of contactors KM1 and KM2 on and off. The flexibility and accuracy of the roller shutter motor control need to be improved. Utility Model Content

[0005] This application provides a control circuit board for a roller shutter motor for greenhouse control, which addresses the problem that the flexibility and accuracy of roller shutter motor control in existing roller shutter motor control technologies need to be improved.

[0006] On the one hand, this application provides a roller shutter motor control circuit board for greenhouse control, including: a main control chip; the main control chip is provided with a roller shutter motor control circuit.

[0007] The roller shutter motor control circuit includes: output interface MCU_380V_MOTO1_UW, output interface MCU_380V_MOTO1_WU, and output interface MCU_380V_MOTO1_V.

[0008] The output interface MCU_380V_MOTO1_UW is connected to the base of transistors Q1 and Q3 respectively, the output interface MCU_380V_MOTO1_WU is connected to the base of transistors Q2 and Q4 respectively, and the output interface MCU_380V_MOTO1_V is connected to the base of transistor Q5.

[0009] The collectors of transistors Q1, Q3, Q2, Q4, and Q5 are respectively connected to pin 2 of optocouplers U19, U22, U21, U18, and U20.

[0010] Pin 4 of optocoupler U19, optocoupler U22, optocoupler U21, optocoupler U18, and optocoupler U20 are respectively connected to pin 3 of silicon controlled rectifiers Q18, Q21, Q20, Q17, and Q19.

[0011] Pin 6 of the optocoupler U19 and pin 2 of the thyristor Q18 are both connected to the U-phase coil of the roller shutter motor. Pin 6 of the optocoupler U21 and pin 2 of the thyristor Q20 are both connected to the W-phase coil of the roller shutter motor. Pin 6 of the optocoupler U22 and pin 2 of the thyristor Q21 are both connected to the W-phase coil of the roller shutter motor. Pin 6 of the optocoupler U18 and pin 2 of the thyristor Q17 are both connected to the U-phase coil of the roller shutter motor. Pin 6 of the optocoupler U20 and pin 2 of the thyristor Q19 are both connected to the V-phase coil of the roller shutter motor.

[0012] Pin 1 of the thyristor Q18 and the thyristor Q20 is connected to the power supply interface 380V_MOTO1_W, pin 1 of the thyristor Q21 and the thyristor Q17 is connected to the power supply interface 380V_MOTO1_U, and pin 1 of the thyristor Q19 is connected to the power supply interface 380V_MOTO1_V.

[0013] In one possible implementation, the main control chip is also provided with a power supply pin connector Header3.

[0014] Pins 1, 2, and 3 of the power supply connector Header 3 are respectively connected to the power supply interface 380V_MOTO1_W, the power supply interface 380V_MOTO1_V, and the power supply interface 380V_MOTO1_U.

[0015] In one possible implementation, a resistor R1 is connected in series between the output interface MCU_380V_MOTO1_UW and the base of the transistor Q1, and the emitter of the transistor Q1 is connected to the ground terminal GND1.

[0016] A resistor R8 is connected in series between the output interface MCU_380V_MOTO1_UW and the base of the transistor Q3, and the emitter of the transistor Q3 is connected to the ground terminal GND1.

[0017] A resistor R4 is connected in series between the output interface MCU_380V_MOTO1_WU and the base of the transistor Q2, and the emitter of the transistor Q2 is connected to the ground terminal GND1.

[0018] A resistor R11 is connected in series between the output interface MCU_380V_MOTO1_WU and the base of the transistor Q4, and the emitter of the transistor Q4 is connected to the ground terminal GND1.

[0019] A resistor R14 is connected in series between the output interface MCU_380V_MOTO1_V and the base of the transistor Q5, and the emitter of the transistor Q5 is connected to the ground terminal GND1.

[0020] In one possible implementation, resistor R1 is connected in series with resistor R2 to the emitter of transistor Q1, resistor R8 is connected in series with resistor R9 to the emitter of transistor Q3, resistor R4 is connected in series with resistor R5 to the emitter of transistor Q2, resistor R11 is connected in series with resistor R12 to the emitter of transistor Q4, and resistor R14 is connected in series with resistor R15 to the emitter of transistor Q5.

[0021] In one possible implementation, pin 1 of the optocoupler U19 is connected in sequence to resistor R3 and voltage interface 3.3V1.

[0022] Pin 1 of the optocoupler U21 is connected in sequence to resistor R6 and voltage interface 3.3V1.

[0023] Pin 1 of the optocoupler U22 is connected in sequence to resistor R7 and voltage interface 3.3V1.

[0024] Pin 1 of the optocoupler U18 is connected in sequence to resistor R10 and voltage interface 3.3V1.

[0025] Pin 1 of the optocoupler U20 is connected in sequence to resistor R13 and voltage interface 3.3V1.

[0026] In one possible implementation, the main control chip is also equipped with a limit sensor circuit.

[0027] The limit sensor circuit includes: a limit pin connector Header4.

[0028] Pins 2, 3, and 4 of the limiting pin connector Header4 are respectively connected to pin 1 of optocoupler U33, pin 1 of optocoupler U32, and voltage interface 24V2.

[0029] Pin 4 of the optocoupler U32 is connected to the limit input interface LS_IN_1, and pin 4 of the optocoupler U33 is connected to the limit input interface LS_IN_2.

[0030] Pin 6 of the optocoupler U32 is connected to the voltage interface 3.3V1, and pin 6 of the optocoupler U33 is also connected to the voltage interface 3.3V1.

[0031] In one possible implementation, pin 2 of the optocoupler U32 is connected in sequence to resistor R113 and ground terminal GND3, and pin 2 of the optocoupler U33 is connected in sequence to resistor R118 and ground terminal GND3.

[0032] Pin 4 of the optocoupler U32 is also connected to resistor R114 and ground terminal GND1 in sequence, and pin 4 of the optocoupler U33 is also connected to resistor R119 and ground terminal GND1 in sequence.

[0033] In one possible implementation, the main control chip is also provided with a control pin connector Header19.

[0034] Pins 1, 2, 3, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, and 18 of the control pin connector Header19 are respectively connected to the output interfaces MCU_380V_MOTO1_UW, MCU_380V_MOTO1_WU, MCU_380V_MOTO1_V, the limit input interface LS_IN_1, the limit input interface LS_IN_2, resistor R121, resistor R120, ground terminal GND1, voltage interface 3.3V1, ground terminal GND3, voltage interface 24V2, W-phase coil, W-phase coil, V-phase coil, U-phase coil, and U-phase coil.

[0035] The resistors R121 and R120 are both connected to the ground terminal GND1 and form an automatic identification circuit.

[0036] In one possible implementation, pin 5 of the control pin connector Header19 is connected to the limit input interface LS_IN_3.

[0037] The roller shutter motor control circuit board of this application for greenhouse control has the following advantages:

[0038] The proposed roller shutter motor control circuit, by setting up three output interfaces, five transistors, five optocouplers, five thyristors, three power supply interfaces, and the circuit relationship between the three-phase coils of the roller shutter motor, can control the power supply sequence of the three-phase coils of the roller shutter motor by controlling the state of the five thyristors, thereby controlling the forward and reverse rotation of the three-phase roller shutter motor, improving the flexibility and accuracy of roller shutter motor control.

[0039] The proposed limit sensor circuit can transmit on / off signals to the main control chip via an optocoupler, which is then used by the main control chip to determine the motor position.

[0040] The proposed resistors R121 and R120 are both connected to the grounding terminal GND1, forming an automatic identification circuit. When the roller shutter motor control circuit board is installed inside the host, the host will automatically identify the type of the installed circuit board and perform the operation according to the corresponding program. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the roller shutter motor control circuit provided in an embodiment of this application;

[0043] Figure 2 A schematic diagram of the power supply pin connector Header3 provided in the embodiments of this application;

[0044] Figure 3 This is a schematic diagram of the limit sensor circuit provided in an embodiment of this application;

[0045] Figure 4 This is a schematic diagram of the control pin connector Header 19 provided in an embodiment of this application. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] like Figure 1 As shown in the figure, this application embodiment provides a roller shutter motor control circuit board for greenhouse control, including: a main control chip; the main control chip is provided with a roller shutter motor control circuit.

[0048] The roller shutter motor control circuit includes: output interface MCU_380V_MOTO1_UW, output interface MCU_380V_MOTO1_WU, and output interface MCU_380V_MOTO1_V.

[0049] The output interface MCU_380V_MOTO1_UW is connected to the base of transistors Q1 and Q3 respectively, the output interface MCU_380V_MOTO1_WU is connected to the base of transistors Q2 and Q4 respectively, and the output interface MCU_380V_MOTO1_V is connected to the base of transistor Q5.

[0050] The collectors of transistors Q1, Q3, Q2, Q4, and Q5 are respectively connected to pin 2 of optocouplers U19, U22, U21, U18, and U20.

[0051] Pin 4 of optocoupler U19, optocoupler U22, optocoupler U21, optocoupler U18, and optocoupler U20 are respectively connected to pin 3 of silicon controlled rectifiers Q18, Q21, Q20, Q17, and Q19.

[0052] Pin 6 of the optocoupler U19 and pin 2 of the thyristor Q18 are both connected to the U-phase coil of the roller shutter motor. Pin 6 of the optocoupler U21 and pin 2 of the thyristor Q20 are both connected to the W-phase coil of the roller shutter motor. Pin 6 of the optocoupler U22 and pin 2 of the thyristor Q21 are both connected to the W-phase coil of the roller shutter motor. Pin 6 of the optocoupler U18 and pin 2 of the thyristor Q17 are both connected to the U-phase coil of the roller shutter motor. Pin 6 of the optocoupler U20 and pin 2 of the thyristor Q19 are both connected to the V-phase coil of the roller shutter motor.

[0053] Pin 1 of the thyristor Q18 and the thyristor Q20 is connected to the power supply interface 380V_MOTO1_W, pin 1 of the thyristor Q21 and the thyristor Q17 is connected to the power supply interface 380V_MOTO1_U, and pin 1 of the thyristor Q19 is connected to the power supply interface 380V_MOTO1_V.

[0054] Specifically, in this embodiment, the main control chip controls the switching on and off of transistors Q1, Q3, Q2, Q4, and Q5 through output interfaces MCU_380V_MOTO1_UW, MCU_380V_MOTO1_WU, and MCU_380V_MOTO1_V. When transistors Q1, Q3, Q2, Q4, and Q5 are turned on, they trigger optocouplers U19, U22, U21, U18, and U20 to turn on. When electrical coupler U22, optocoupler U21, optocoupler U18, and optocoupler U20 are turned on, they can trigger thyristors Q18, Q21, Q20, Q17, and Q19 to turn on. Thyristors Q18, Q21, Q20, Q17, and Q19 act as power supply switches, connecting the three-phase coils (W-phase coil, U-phase coil, and V-phase coil) of the roller shutter motor to three power supply interfaces (380V_MOTO1_W, 380V_MOTO1_U, and 380V_MOTO1_V) for AC power supply. When thyristors Q18, Q19, and Q21 are turned on, and thyristors Q17 and Q20 are turned off, the power supply sequence of the three-phase coils of the roller shutter motor is UVW, and the motor rotates forward. When thyristors Q17, Q19, and Q20 are turned on, and thyristors Q18 and Q21 are turned off, the power supply sequence of the three-phase coils of the roller shutter motor is WVU, and the motor rotates in reverse.

[0055] like Figure 2 As shown, exemplarily, the main control chip is also provided with a power supply pin connector Header3.

[0056] Pins 1, 2, and 3 of the power supply connector Header 3 are respectively connected to the power supply interface 380V_MOTO1_W, the power supply interface 380V_MOTO1_V, and the power supply interface 380V_MOTO1_U.

[0057] For example, a resistor R1 is connected in series between the output interface MCU_380V_MOTO1_UW and the base of the transistor Q1, and the emitter of the transistor Q1 is connected to the ground terminal GND1.

[0058] A resistor R8 is connected in series between the output interface MCU_380V_MOTO1_UW and the base of the transistor Q3, and the emitter of the transistor Q3 is connected to the ground terminal GND1.

[0059] A resistor R4 is connected in series between the output interface MCU_380V_MOTO1_WU and the base of the transistor Q2, and the emitter of the transistor Q2 is connected to the ground terminal GND1.

[0060] A resistor R11 is connected in series between the output interface MCU_380V_MOTO1_WU and the base of the transistor Q4, and the emitter of the transistor Q4 is connected to the ground terminal GND1.

[0061] A resistor R14 is connected in series between the output interface MCU_380V_MOTO1_V and the base of the transistor Q5, and the emitter of the transistor Q5 is connected to the ground terminal GND1.

[0062] For example, resistor R1 is connected in series with the emitter of transistor Q1, resistor R8 is connected in series with the emitter of transistor Q3, resistor R4 is connected in series with the emitter of transistor Q2, resistor R11 is connected in series with the emitter of transistor Q4, and resistor R14 is connected in series with the emitter of transistor Q5.

[0063] For example, pin 1 of the optocoupler U19 is connected in sequence to resistor R3 and voltage interface 3.3V1.

[0064] Pin 1 of the optocoupler U21 is connected in sequence to resistor R6 and voltage interface 3.3V1.

[0065] Pin 1 of the optocoupler U22 is connected in sequence to resistor R7 and voltage interface 3.3V1.

[0066] Pin 1 of the optocoupler U18 is connected in sequence to resistor R10 and voltage interface 3.3V1.

[0067] Pin 1 of the optocoupler U20 is connected in sequence to resistor R13 and voltage interface 3.3V1.

[0068] like Figure 3 As shown, for example, the main control chip is also provided with a limit sensor circuit.

[0069] The limit sensor circuit includes: a limit pin connector Header4.

[0070] Pins 2, 3, and 4 of the limiting pin connector Header4 are respectively connected to pin 1 of optocoupler U33, pin 1 of optocoupler U32, and voltage interface 24V2.

[0071] Pin 4 of the optocoupler U32 is connected to the limit input interface LS_IN_1, and pin 4 of the optocoupler U33 is connected to the limit input interface LS_IN_2.

[0072] Pin 6 of the optocoupler U32 is connected to the voltage interface 3.3V1, and pin 6 of the optocoupler U33 is also connected to the voltage interface 3.3V1.

[0073] For example, pin 2 of the optocoupler U32 is connected to resistor R113 and ground terminal GND3 in sequence, and pin 2 of the optocoupler U33 is connected to resistor R118 and ground terminal GND3 in sequence.

[0074] Pin 4 of the optocoupler U32 is also connected to resistor R114 and ground terminal GND1 in sequence, and pin 4 of the optocoupler U33 is also connected to resistor R119 and ground terminal GND1 in sequence.

[0075] Specifically, in this embodiment, when the roller shutter motor rotates to a limited position, the limit sensor circuit provides an on / off signal. The on / off signal is transmitted to the main control chip through an optocoupler, which is used by the main control chip to determine the motor position.

[0076] like Figure 4 As shown, exemplarily, the main control chip is also provided with a control pin connector Header19.

[0077] Pins 1, 2, 3, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, and 18 of the control pin connector Header19 are respectively connected to the output interfaces MCU_380V_MOTO1_UW, MCU_380V_MOTO1_WU, MCU_380V_MOTO1_V, the limit input interface LS_IN_1, the limit input interface LS_IN_2, resistor R121, resistor R120, ground terminal GND1, voltage interface 3.3V1, ground terminal GND3, voltage interface 24V2, W-phase coil, W-phase coil, V-phase coil, U-phase coil, and U-phase coil.

[0078] The resistors R121 and R120 are both connected to the ground terminal GND1 and form an automatic identification circuit.

[0079] Specifically, in this embodiment, based on the automatic identification circuit, when the roller shutter motor control circuit board is installed inside the host, the host will automatically identify the type of the installed circuit board and perform the operation according to the corresponding program.

[0080] For example, pin 5 of the control pin connector Header 19 is connected to the limit input interface LS_IN_3.

[0081] Specifically, pin 1 of the limit pin connector Header4 can be expanded by referring to the circuit of pins 2 and 3, which improves the scalability of the limit sensor circuit.

[0082] The roller shutter motor control circuit proposed in this application, by setting up three output interfaces, five transistors, five optocouplers, five thyristors, three power supply interfaces, and the circuit relationship between the three-phase coils of the roller shutter motor, can control the power supply sequence of the three-phase coils of the roller shutter motor by controlling the state of the five thyristors, thereby controlling the forward and reverse rotation of the three-phase roller shutter motor, improving the flexibility and accuracy of roller shutter motor control.

[0083] The proposed limit sensor circuit can transmit on / off signals to the main control chip via an optocoupler, which is then used by the main control chip to determine the motor position.

[0084] The proposed resistors R121 and R120 are both connected to the grounding terminal GND1, forming an automatic identification circuit. When the roller shutter motor control circuit board is installed inside the host, the host will automatically identify the type of the installed circuit board and perform the operation according to the corresponding program.

[0085] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0086] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A control circuit board for a roller shutter motor used in greenhouse control, characterized in that, include: Main control chip; The main control chip is equipped with a roller shutter motor control circuit. The roller shutter motor control circuit includes: output interface MCU_380V_MOTO1_UW, output interface MCU_380V_MOTO1_WU and output interface MCU_380V_MOTO1_V; The output interface MCU_380V_MOTO1_UW is connected to the base of transistors Q1 and Q3 respectively, the output interface MCU_380V_MOTO1_WU is connected to the base of transistors Q2 and Q4 respectively, and the output interface MCU_380V_MOTO1_V is connected to the base of transistor Q5. The collectors of transistors Q1, Q3, Q2, Q4, and Q5 are respectively connected to pin 2 of optocouplers U19, U22, U21, U18, and U20. Pin 4 of optocoupler U19, optocoupler U22, optocoupler U21, optocoupler U18, and optocoupler U20 are respectively connected to pin 3 of silicon controlled rectifier Q18, silicon controlled rectifier Q21, silicon controlled rectifier Q20, silicon controlled rectifier Q17, and silicon controlled rectifier Q19. Pin 6 of the optocoupler U19 and pin 2 of the thyristor Q18 are both connected to the U-phase coil of the roller shutter motor. Pin 6 of the optocoupler U21 and pin 2 of the thyristor Q20 are both connected to the W-phase coil of the roller shutter motor. Pin 6 of the optocoupler U22 and pin 2 of the thyristor Q21 are both connected to the W-phase coil of the roller shutter motor. Pin 6 of the optocoupler U18 and pin 2 of the thyristor Q17 are both connected to the U-phase coil of the roller shutter motor. Pin 6 of the optocoupler U20 and pin 2 of the thyristor Q19 are both connected to the V-phase coil of the roller shutter motor. Pin 1 of the thyristor Q18 and the thyristor Q20 is connected to the power supply interface 380V_MOTO1_W, pin 1 of the thyristor Q21 and the thyristor Q17 is connected to the power supply interface 380V_MOTO1_U, and pin 1 of the thyristor Q19 is connected to the power supply interface 380V_MOTO1_V.

2. The control circuit board for a roller shutter motor used in greenhouse control according to claim 1, characterized in that, The main control chip is also equipped with a power supply pin connector Header3; Pins 1, 2, and 3 of the power supply connector Header 3 are respectively connected to the power supply interface 380V_MOTO1_W, the power supply interface 380V_MOTO1_V, and the power supply interface 380V_MOTO1_U.

3. The control circuit board for a roller shutter motor used in greenhouse control according to claim 1, characterized in that, A resistor R1 is connected in series between the output interface MCU_380V_MOTO1_UW and the base of the transistor Q1, and the emitter of the transistor Q1 is connected to the ground terminal GND1. A resistor R8 is connected in series between the output interface MCU_380V_MOTO1_UW and the base of the transistor Q3, and the emitter of the transistor Q3 is connected to the ground terminal GND1. A resistor R4 is connected in series between the output interface MCU_380V_MOTO1_WU and the base of the transistor Q2, and the emitter of the transistor Q2 is connected to the ground terminal GND1. A resistor R11 is connected in series between the output interface MCU_380V_MOTO1_WU and the base of the transistor Q4, and the emitter of the transistor Q4 is connected to the ground terminal GND1. A resistor R14 is connected in series between the output interface MCU_380V_MOTO1_V and the base of the transistor Q5, and the emitter of the transistor Q5 is connected to the ground terminal GND1.

4. A control circuit board for a roller shutter motor used in greenhouse control according to claim 3, characterized in that, A resistor R2 is connected in series between resistor R1 and the emitter of transistor Q1; a resistor R9 is connected in series between resistor R8 and the emitter of transistor Q3; a resistor R5 is connected in series between resistor R4 and the emitter of transistor Q2; a resistor R12 is connected in series between resistor R11 and the emitter of transistor Q4; and a resistor R15 is connected in series between resistor R14 and the emitter of transistor Q5.

5. A control circuit board for a roller shutter motor used in greenhouse control according to claim 1, characterized in that, Pin 1 of the optocoupler U19 is connected in sequence to resistor R3 and voltage interface 3.3V1; Pin 1 of the optocoupler U21 is connected in sequence to resistor R6 and voltage interface 3.3V1; Pin 1 of the optocoupler U22 is connected in sequence to resistor R7 and voltage interface 3.3V1; Pin 1 of the optocoupler U18 is connected in sequence to resistor R10 and voltage interface 3.3V1; Pin 1 of the optocoupler U20 is connected in sequence to resistor R13 and voltage interface 3.3V1.

6. A control circuit board for a roller shutter motor used in greenhouse control according to claim 1, characterized in that, The main control chip is also equipped with a limit sensor circuit. The limit sensor circuit includes: a limit pin connector Header4; Pins 2, 3, and 4 of the limiting pin connector Header4 are respectively connected to pin 1 of optocoupler U33, pin 1 of optocoupler U32, and voltage interface 24V2. Pin 4 of the optocoupler U32 is connected to the limit input interface LS_IN_1, and pin 4 of the optocoupler U33 is connected to the limit input interface LS_IN_2. Pin 6 of the optocoupler U32 is connected to the voltage interface 3.3V1, and pin 6 of the optocoupler U33 is also connected to the voltage interface 3.3V1.

7. A control circuit board for a roller shutter motor used in greenhouse control according to claim 6, characterized in that, Pin 2 of the optocoupler U32 is connected in sequence to resistor R113 and ground terminal GND3, and pin 2 of the optocoupler U33 is connected in sequence to resistor R118 and ground terminal GND3. Pin 4 of the optocoupler U32 is also connected to resistor R114 and ground terminal GND1 in sequence, and pin 4 of the optocoupler U33 is also connected to resistor R119 and ground terminal GND1 in sequence.

8. A control circuit board for a roller shutter motor used in greenhouse control according to claim 6, characterized in that, The main control chip is also equipped with a control pin connector Header19. Pins 1, 2, 3, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, and 18 of the control pin connector Header19 are respectively connected to the output interfaces MCU_380V_MOTO1_UW, MCU_380V_MOTO1_WU, MCU_380V_MOTO1_V, the limit input interface LS_IN_1, the limit input interface LS_IN_2, resistor R121, resistor R120, ground terminal GND1, voltage interface 3.3V1, ground terminal GND3, voltage interface 24V2, W-phase coil, W-phase coil, V-phase coil, U-phase coil, and U-phase coil. The resistors R121 and R120 are both connected to the ground terminal GND1 and form an automatic identification circuit.

9. A control circuit board for a roller shutter motor used in greenhouse control according to claim 8, characterized in that, Pin 5 of the control pin connector Header19 is connected to the limit input interface LS_IN_3.

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